A coal gasification crude phenol refining system and method

Abstract

The present invention discloses a coal gasification crude phenol refining system and method, which relates to the technical field of crude phenol refining, and includes a support shell, a scraping film device, a distillation device, a light component removal device, a condensation device, and a rolling assembly. The heating rod in the condensation device heats the air in the conversion chamber through waste heat. Subsequently, the spring and high-pressure gas drive the double-leaf valve to close the second condensation chamber and the fourth condensation chamber, and the gas will enter the first condensation chamber and the third condensation chamber. When the pressure at the inlets of the second condensation chamber and the fourth condensation chamber is greater than the pressure in the conversion chamber, the double-leaf valve will open the second condensation chamber and the fourth condensation chamber to achieve the alternate cooling function. The rolling assembly drives the friction rollers on the rolling sleeve to rotate around the periphery of the conical reaction cylinder through the distillation device. At the same time, the inner cylindrical surface of the rolling sleeve drives the switching rotating column on the switching chassis to rotate. The switching rotating column is intermittently inserted into the positioning ring through the switching disc and the switching convex block positioning strip to achieve the intermittent rotation of the rectifying cylinder.

Description

Technical Field

[0001] The present invention relates to the technical field of crude phenol refining, and particularly to a crude phenol refining system and method for coal gasification. Background Art

[0002] In the process of coal reacting with a gasifying agent under high temperature and high pressure to generate synthesis gas, a certain amount of phenolic compound mixture will be produced. This phenolic compound mixture is called crude phenol for coal gasification. The main components of crude phenol for coal gasification include phenol, cresol, xylenol, etc. However, these crude phenols for coal gasification cannot be directly applied to other industries and need to be refined by distillation and separation first, so as to separately purify and separate each phenolic compound, making the purity of the phenolic compound high and free of other harmful impurities, and then it can be used as an important raw material for engineering plastics, medicines, and disinfectants.

[0003] In the process of refining crude phenol for coal gasification, the existing refining equipment for crude phenol for coal gasification often adopts a design in which each distillation tank and reaction tank are separated from each other. This makes the overall volume of the entire refining equipment for crude phenol for coal gasification too large and too long, and the transfer time during the refining process is also very long, thus unable to further improve the efficiency of the refining process. At the same time, when the existing equipment condenses the components in the upper part of the distillation column, it cannot automatically adjust the condensation method and strategy according to the temperature and pressure of the gas, resulting in excessive time or energy consumption during the condensation process. Therefore, a crude phenol refining system and method for coal gasification that can reduce the overall volume of the equipment and automatically adjust the condensation time and method according to the temperature and pressure of the gas are needed to solve the deficiencies of the existing crude phenol refining system for coal gasification.

[0004] For example, the patent with the publication number CN222490018U provides a cresol refining device, which includes a crude phenol tank, an externally purchased crude cresol tank, a light removal tower, a tail gas reflux pipe, a distillation column, and a product tank. The tail gas reflux pipe can transport a part of the hot gas into the light removal tower to achieve the improvement of heat recovery. The design of this application is reasonable and can further recover and utilize the heat in the hot gas. However, the structure of this scheme is scattered, and only linear series connection exists between each reaction tower, resulting in an overly large and long overall volume of the system, thus unable to reduce the total area occupied by the site. At the same time, this also causes a large amount of time to be wasted during the transfer and transportation of the mixed phenol, and the efficiency of the refining process cannot be improved. The system structure of this scheme is loose, resulting in ineffective linkage between each device. Therefore, this scheme cannot synchronously improve the distillation efficiency of multiple distillation columns through the linkage between each device. At the same time, this scheme also cannot automatically adjust the condensation method and strategy according to the temperature and pressure of the gas phase, so as to save the time or energy consumed during the condensation process. Summary of the Invention

[0005] The object of the present invention is to provide a coal gasification crude phenol refining system and method, aiming to solve the technical problems existing in the prior art, such as how to improve the overall refining efficiency through the integrated design of the crude phenol refining system, how to synchronously improve the individual refining efficiency in all rectifying towers, and how to automatically adjust the strategy of the condensation process according to the temperature and pressure of the gas phase.

[0006] In view of the above technical problems, the technical solution adopted by the present invention is as follows: a coal gasification crude phenol refining system, including a support housing, a wiping film device, a distillation device, a light component removal device, a condensation device, and a rolling assembly; the support housing is fixedly installed on the periphery of the wiping film device; two condensation devices are respectively fixedly installed at the upper end and the lower end of the distillation device; the condensation device at the lower end of the distillation device is rotatably connected to the upper end of the wiping film device; the condensation device at the upper end of the distillation device is also fixedly connected to the lower end of the light component removal device; the wiping film device is provided with a wiping film base and an annular pipeline; the outer cylindrical surface of the wiping film base is fixedly connected to the inner cylindrical surface of the support housing; the annular pipeline is rotatably connected to the upper end of the wiping film base along the circumferential direction of the wiping film base; the rolling assembly is provided with a switching assembly, a rolling sleeve, a clamping strip, a circulation pump, a switching disk, and a switching convex block; the switching assembly is rotatably connected to the lower end of the distillation device; the circulation pump is fixedly installed at the lower end of the switching assembly; the circulation pump is also fixedly installed at the upper end of the annular pipeline; the rolling sleeve is rotatably connected to the periphery of the switching assembly; the clamping strip is slidably installed on the outer cylindrical surface of the rolling sleeve along the axial direction of the rolling sleeve; the upper end of the switching disk is fixedly installed at the lower end of the switching assembly; the switching convex block is fixedly installed at the upper end of the switching disk; when the wiping film device drives the distillation device, the distillation device will drive the switching assembly and the annular pipeline to rotate on the upper end of the wiping film base, the switching assembly drives the rolling sleeve to revolve around the periphery of the wiping film device, and at the same time, the frictional force between the rolling sleeve and the periphery of the wiping film device will drive the rolling sleeve to roll on the periphery of the wiping film device, so as to realize the revolution and rotation functions of the rolling sleeve. At this time, the inner cylindrical surface of the rolling sleeve will drive the switching disk at the lower end of the switching assembly to rotate, and the switching disk realizes the up and down reciprocating motion of the clamping strip through the intermittent contact between the switching convex block and the clamping strip.

[0007] Further, the film scraping device further includes a first liquid pump, a storage tank, a feed pipe, a conical reaction cylinder, a second liquid pump, a third liquid pump, a first gear, a servo motor, a first power supply, a second gear, a flow retardation baffle, a first heating resistor, a film scraping blade, a flow guiding disc, and a heat conducting sleeve; the first liquid pump is fixedly installed at the upper end of the annular pipe; the storage tank is fixedly installed at the upper end of the second liquid pump; the upper end of the second liquid pump is fixedly installed at the upper end of the annular pipe; the feed pipe is fixedly installed at the upper end of the heat conducting sleeve; the conical reaction cylinder is fixedly installed at the upper end of the film scraping base; the third liquid pump is fixedly installed at the upper end of the annular pipe; the first gear is fixedly installed at the output end of the servo motor; the servo motor is fixedly installed inside the film scraping base in the vertical direction; the second gear is fixedly installed at the lower end of the heat conducting sleeve; the second gear also forms a gear pair with the first gear; the first power supply is fixedly installed inside the film scraping base; the three flow retardation baffles are distributed around the heat conducting sleeve along the axis direction of the heat conducting sleeve; the first heating resistor is fixedly installed at the upper end of the first power supply; the outer cylindrical surface of the first heating resistor is also rotationally connected to the inner cylindrical surface of the heat conducting sleeve; the four flow guiding discs are distributed around the heat conducting sleeve along the axis direction of the heat conducting sleeve; flow guiding grooves are further provided on the flow guiding discs in the radial direction; the film scraping blade is fixedly installed on the periphery of the flow guiding disc; the outer surface of the film scraping blade is also in frictional contact with the inner surface of the conical reaction cylinder.

[0008] Further, the distillation device includes a rectification cylinder, a self-cleaning component, a distillation outer shell, a clamping ring, a distillation convex block, and a second heating resistor; the six rectification cylinders are respectively rotationally connected to the lower ends of the six self-cleaning components; the six rectification cylinders are also rotationally connected to the upper ends of the six switching components; the six self-cleaning components are evenly distributed around the distillation outer shell in the circumferential direction; the distillation outer shell is rotationally connected to the upper end of the conical reaction cylinder; the bottom of the distillation outer shell is communicated with the first liquid pump through a pipe; the clamping ring is fixedly installed on the periphery of the rectification cylinder; the distillation convex block is fixedly installed inside the distillation outer shell; the second heating resistor is fixedly installed inside the distillation outer shell; the second heating resistor is also fixedly connected to the side surface of the light component removal device.

[0009] Further, the self-cleaning component includes a self-cleaning top cover, a magnetic slide rail, a third heating resistor, a linear motor, and a cleaning flexible disc; the self-cleaning top cover is fixedly installed on the periphery of the distillation outer shell; the self-cleaning top cover is used for the discharge and heat dissipation of the product; the third heating resistor is fixedly installed at the lower end of the self-cleaning top cover; the third heating resistor is also electrically connected to the second power supply; the magnetic slide rail is fixedly installed around the third heating resistor along the axis direction of the third heating resistor; the linear motor is slidably installed on the magnetic slide rail along the axis direction of the third heating resistor; the cleaning flexible disc is fixedly installed on the periphery of the linear motor; the outer cylindrical surface of the linear motor is in frictional contact with the inner cylindrical surface of the rectification cylinder.

[0010] Furthermore, the light removal device includes a second power supply, a light removal housing, light removal bumps, a discharge tube, and a fourth heating resistor; the second power supply is fixedly installed on the side of the fourth heating resistor; the second power supply is also fixedly connected to the side of the third heating resistor; the light removal housing is fixedly installed at the upper end of the distillation housing; the bottom of the light removal housing is communicated with the third liquid pump through a pipeline; the light removal bumps are fixedly installed on the inner surface of the light removal housing; the discharge tube is fixedly installed at the upper end of the light removal housing; the discharge tube is also fixedly installed around the feed pipe; the fourth heating resistor is fixedly installed inside the light removal housing.

[0011] Furthermore, the condensation device includes a condensation housing, a heat energy connector, and a condensation pump; the condensation housings of the two condensation devices are fixedly installed at the upper and lower ends of the distillation housing respectively; the condensation housing at the lower end of the distillation housing is rotatably connected to the upper end of the conical reaction cylinder; the condensation housing at the upper end of the distillation housing is fixedly installed at the lower end of the light removal housing; the condensation housings of the two condensation devices are fixedly installed around the feed pipe; the heat energy connector is fixedly installed at the upper end of the condensation housing; the heat energy connector is also fixedly connected to the second heating resistor and the fourth heating resistor respectively; the condensation pump is fixedly installed at the upper end of the condensation housing.

[0012] Furthermore, the condensation device further includes a first condensation chamber, a second condensation chamber, a heating rod, a spring, a double-leaf valve, a third condensation chamber, a fourth condensation chamber, a transformation chamber, a first intake chamber, a condensation fixing plate, and a second intake chamber; the first condensation chamber is fixedly installed inside the condensation housing; the second condensation chamber is fixedly installed inside the condensation housing; a cooling tank is arranged inside the second condensation chamber; cooling oil is stored in the cooling tank in the second condensation chamber; the third condensation chamber is fixedly installed inside the condensation housing; the fourth condensation chamber is fixedly installed inside the condensation housing; a cooling tank is arranged inside the fourth condensation chamber; cooling oil is stored in the cooling tank in the fourth condensation chamber; the double-leaf valve is rotatably connected inside the condensation housing; the condensation fixing plate is fixedly installed inside the condensation housing; the two ends of the spring are respectively fixedly installed on the side of the condensation fixing plate and the side of the double-leaf valve; the spring will drive the double-leaf valve to close the inlets of the second condensation chamber and the fourth condensation chamber; the obtuse angle area clamped by the condensation fixing plate and the double-leaf valve is the transformation chamber; the heating rod is fixedly installed inside the transformation chamber; the upper end of the heating rod is fixedly connected to the lower end of the heat energy connector; the lower end of the heating rod is in contact with the upper end of the conical reaction cylinder and the upper end of the distillation housing respectively; the chambers at the inlets of the second condensation chamber and the fourth condensation chamber are the first intake chamber; the chambers at the inlets of the first condensation chamber and the third condensation chamber are the second intake chamber.

[0013] Furthermore, the rolling assembly further includes a friction roller; the outer cylindrical surface of the switching assembly is also rotatably connected to the inner cylindrical surface of the rectification cylinder; the friction roller is fixedly installed around the rolling sleeve.

[0014] Further, the switching component includes a switching chassis and a switching rotating column; the outer cylindrical surface of the switching chassis is rotatably connected to the inner cylindrical surface of the rectifying cylinder; the switching chassis is fixedly installed at the upper end of the circulation pump; the outer cylindrical surface of the switching chassis is also rotatably connected to the inner cylindrical surface of the rolling sleeve; the switching rotating column is rotatably connected to the periphery of the switching chassis along the axial direction of the switching chassis; the outer cylindrical surface of the switching rotating column is also in frictional contact with the inner cylindrical surface of the rolling sleeve.

[0015] A method for refining crude phenol from coal gasification, such as the above-mentioned crude phenol refining system for coal gasification, includes the following steps:

[0016] Step 1: Feed the crude phenol raw material into the conical reaction cylinder through the feed pipe of the scraping film device. Subsequently, the servo motor in the scraping film base drives the second gear to rotate through the first gear, the second gear drives the heat conduction sleeve to rotate, the heat conduction sleeve drives the four guide plates and the scraping film to rotate synchronously, the guide plates drive the crude phenol raw material to be thrown out along the guide grooves on the guide plates to the outer surface of the scraping film by centrifugal force, and the scraping film smears the crude phenol raw material on the inner surface of the conical reaction cylinder;

[0017] Step 2: The first power supply passes an electric current through the first heating resistor, and the first heating resistor heats the crude phenol raw material in the conical reaction cylinder, so that the phenolic components in the crude phenol raw material are heated and converted into a gas phase. The gaseous phenolic components enter the condensation device at the lower end of the distillation device from the upper end of the conical reaction cylinder;

[0018] Step 3: After the gaseous phenolic components are cooled by the condensation device, they are then transported to the distillation outer shell of the distillation device by the condensate pump in the condensation device. At the same time, the second power supply on the light component removal device energizes the second heating resistor, so that the second heating resistor heats the phenolic components in the distillation outer shell, separating the crude xylenol from the phenolic components lighter than the crude xylenol. At this time, the crude xylenol remains at the bottom of the distillation outer shell, and the phenolic components lighter than the crude xylenol enter the condensation device at the upper end of the distillation device;

[0019] Step 4: After the phenolic components lighter than the crude xylenol are cooled by the condensation device, they are then transported to the light component removal outer shell of the light component removal device by the condensate pump. Subsequently, the second power supply energizes the fourth heating resistor, so that the fourth heating resistor heats the phenolic components in the light component removal outer shell, separating the phenolic components not less than the boiling point of phenol from the fractions less than the boiling point of phenol. The phenolic components not less than the boiling point of phenol enter the annular pipeline through the pipeline at the bottom of the light component removal outer shell and the third liquid pump, while the fractions less than the boiling point of phenol are discharged from the side of the discharge cylinder;

[0020] Step Five: Subsequently, the circulation pump in the rolling component transports the phenolic components not less than the boiling point of phenol into the three rectifying cylinders on the right side of the axis of the distillation housing. The third heating resistor in the self-cleaning component heats the phenolic components not less than the boiling point of phenol, causing phenol to distill out from the upper end of the self-cleaning top cover, while the mixed phenol at the bottom will enter the three rectifying cylinders on the left side of the axis of the distillation housing through the circulation pump and the annular pipeline;

[0021] Step Six: Subsequently, the second liquid pump sucks out the inorganic strong acid from the storage tank and transports it into the three rectifying cylinders on the left side of the axis of the distillation housing. In the rectifying cylinder, the inorganic strong acid reacts with the mixed phenol for decolorization. Subsequently, the decolorized mixed phenol enters the three rectifying cylinders on the right side of the axis of the distillation housing through the circulation pump and the annular pipeline. The third heating resistor heats the decolorized mixed phenol, causing water and fractions lighter than o-cresol to be discharged from the upper end of the self-cleaning top cover, while the dehydrated mixed phenol will enter the three rectifying cylinders on the left side of the axis of the distillation housing through the circulation pump and the annular pipeline;

[0022] Step Seven: The third heating resistor heats the dehydrated mixed phenol, causing o-cresol to distill out from the upper end of the self-cleaning top cover, while the crude m,p-cresol at the bottom will enter the three rectifying cylinders on the right side of the axis of the distillation housing through the circulation pump and the annular pipeline. Subsequently, the third heating resistor heats the crude m,p-cresol, causing m,p-cresol to distill out from the upper end of the self-cleaning top cover. The crude xylenol at the bottom of the rectifying cylinder is retained. Subsequently, the first liquid pump transports the crude xylenol at the bottom of the distillation housing into the six rectifying cylinders respectively, and then heats the crude xylenol through the third heating resistor, causing xylenol to distill out from the upper end of the self-cleaning top cover. The higher-grade phenol at the bottom of the rectifying cylinder is retained;

[0023] Step Eight: While Steps Three and Four are being carried out, the heating rod in the condensing device heats the air in the conversion chamber through the waste heat of the second and fourth heating resistors. Subsequently, the high-temperature and high-pressure gas in the spring and the conversion chamber drives the double-leaf valve to close the inlets of the second and fourth condensing chambers. Subsequently, the gas will enter the first intake chamber and the second intake chamber simultaneously. At this time, the gas will preferentially enter the first and third condensing chambers. When the gas pressure in the first intake chamber is greater than the pressure in the conversion chamber, the pressure will drive the double-leaf valve to open the inlets of the second and fourth condensing chambers to achieve the alternate cooling function;

[0024] Step Nine: While Step One is being carried out, the heat-conducting sleeve drives the distillation outer shell, the condensation shell, and the light-component removal outer shell to rotate together through the feed pipe. Subsequently, the distillation outer shell drives the switching assembly and the annular pipeline to rotate on the upper end of the scraping film base. The switching assembly drives the friction rollers on the rolling sleeve to revolve around the periphery of the conical reaction cylinder. At the same time, the frictional force also drives the rolling sleeve to roll on the periphery of the conical reaction cylinder. At this time, the inner cylindrical surface of the rolling sleeve drives the switching disk at the lower end of the switching column to rotate. The switching disk intermittently contacts the clamping strip through the switching convex block to achieve the up-and-down reciprocating movement of the clamping strip. At this time, the clamping strip intermittently contacts the clamping ring, causing the rectifying cylinder to rotate intermittently to achieve the auxiliary centrifugal rotation function.

[0025] The beneficial effects of the present invention compared with the prior art are as follows: (1) The heating rod in the condensation device heats the air in the conversion chamber through waste heat. Subsequently, the spring and high-pressure gas drive the double-leaf valve to close the second condensation chamber and the fourth condensation chamber, and the gas will enter the first condensation chamber and the third condensation chamber. When the pressure at the inlets of the second condensation chamber and the fourth condensation chamber is greater than the pressure in the conversion chamber, the double-leaf valve will open the second condensation chamber and the fourth condensation chamber to achieve the alternate cooling function. (2) The rolling assembly drives the friction rollers on the rolling sleeve to rotate on the periphery of the conical reaction cylinder through the distillation device. At the same time, the inner cylindrical surface of the rolling sleeve drives the switching column on the switching chassis to rotate. The switching column intermittently inserts into the clamping ring through the switching disk and the switching convex block clamping strip to achieve the intermittent rotation of the rectifying cylinder. (3) Through the alternate inflow and outflow of the mixed phenol in the six rectifying cylinders, and the linear motor in the self-cleaning component drives the cleaning flexible disk to slide reciprocally on the inner wall of the rectifying cylinder, the alternate rectification function and the self-cleaning function are reciprocally carried out, and at the same time, the total area of the site occupied by the equipment is reduced. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 Schematic diagram of the overall assembly structure of the working state of the embodiment of the present invention Figure 1 。

[0027] Figure 2 Schematic diagram of the overall assembly structure of the working state of the embodiment of the present invention Figure 2 。

[0028] Figure 3 Schematic diagram of the structure of the scraping film device of the present invention Figure 1 。

[0029] Figure 4 Schematic diagram of the structure of the scraping film device of the present invention Figure 2 。

[0030] Figure 5 Schematic diagram of the structure of the distillation device of the present invention Figure 1 。

[0031] Figure 6 Structural schematic of the distillation device of the present invention Figure 2 .

[0032] Figure 7 Structural schematic diagram of the self-cleaning component of the present invention.

[0033] Figure 8 Structural schematic diagram of the light removal device of the present invention.

[0034] Figure 9 Structural schematic of the condensation device of the present invention Figure 1 .

[0035] Figure 10 Structural schematic of the condensation device of the present invention Figure 2 .

[0036] Figure 11 Structural schematic diagram of the rolling component of the present invention.

[0037] Figure 12 Structural schematic diagram of the switching component of the present invention.

[0038] In the figure: 1 - support housing; 2 - film scraping device; 3 - distillation device; 4 - light removal device; 5 - condensation device; 6 - rolling component; 201 - film scraping base; 202 - first liquid pump; 203 - annular pipeline; 204 - storage tank; 205 - feed pipe; 206 - conical reaction cylinder; 207 - second liquid pump; 208 - third liquid pump; 209 - first gear; 210 - servo motor; 211 - first power supply; 212 - second gear; 213 - flow retarder; 214 - first heating resistor; 215 - film scraping blade; 216 - guide disk; 217 - heat conduction sleeve; 301 - rectifying cylinder; 302 - self-cleaning component; 303 - distillation outer shell; 304 - clamping ring; 305 - distillation bump; 306 - second heating resistor; 307 - self-cleaning top cover; 308 - magnetic slide rail; 309 - third heating resistor; 310 - linear motor; 311 - cleaning flexible disk; 401 - second power supply; 402 - light removal outer shell; 403 - light removal bump; 404 - discharge cylinder; 405 - fourth heating resistor; 501 - condensation housing; 502 - heat energy connector; 503 - condensation pump; 504 - first condensation chamber; 505 - second condensation chamber; 506 - heating rod; 507 - spring; 508 - double-leaf valve; 509 - third condensation chamber; 510 - fourth condensation chamber; 511 - transformation chamber; 512 - first intake chamber; 513 - condensation fixing plate; 514 - second intake chamber; 601 - switching component; 602 - rolling sleeve; 603 - clamping strip; 604 - friction roller; 605 - circulation pump; 606 - switching disk; 607 - switching bump; 608 - switching chassis; 609 - switching rotating column. Detailed implementation manners

[0039] The technical solution of the present invention will be further described below in conjunction with the accompanying drawings and through specific embodiments.

[0040] Among them, the accompanying drawings are only for illustrative purposes, showing only schematic diagrams, not physical diagrams, and should not be construed as limiting the present invention; in order to better illustrate the embodiments of the present invention, some components in the accompanying drawings will be omitted, enlarged or reduced, which do not represent the dimensions of the actual product; for those skilled in the art, it is understandable that some well-known structures and their descriptions in the accompanying drawings may be omitted.

[0041] Figures 1 to 12 It is a preferred embodiment of the present invention.

[0042] As Figure 1 and 2 shown, the support housing 1 is fixedly installed on the periphery of the wiped film device 2; the two condensing devices 5 are respectively fixedly installed at the upper and lower ends of the distillation device 3; the condensing device 5 at the lower end of the distillation device 3 is rotatably connected to the upper end of the wiped film device 2; the condensing device 5 at the upper end of the distillation device 3 is also fixedly connected to the lower end of the light component removal device 4; the wiped film device 2 is provided with a wiped film base 201 and an annular pipe 203; the outer cylindrical surface of the wiped film base 201 is fixedly connected to the inner cylindrical surface of the support housing 1; the annular pipe 203 is rotatably connected to the upper end of the wiped film base 201 along the circumferential direction of the wiped film base 201; the rolling assembly 6 is provided with a switching assembly 601, a rolling sleeve 602, a clamping strip 603, a circulation pump 605, a switching disk 606, and a switching convex block 607; the switching assembly 601 is rotatably connected to the lower end of the distillation device 3; the circulation pump 605 is fixedly installed at the lower end of the switching assembly 601; the circulation pump 605 is also fixedly installed at the upper end of the annular pipe 203; the rolling sleeve 602 is rotatably connected to the periphery of the switching assembly 601; the clamping strip 603 is slidably installed on the outer cylindrical surface of the rolling sleeve 602 along the axial direction of the rolling sleeve 602; the upper end of the switching disk 606 is fixedly installed at the lower end of the switching assembly 601; the switching convex block 607 is fixedly installed at the upper end of the switching disk 606; when the wiped film device 2 drives the distillation device 3, the distillation device 3 will drive the switching assembly 601 and the annular pipe 203 to rotate on the upper end of the wiped film base 201, the switching assembly 601 drives the rolling sleeve 602 to revolve around the periphery of the wiped film device 2, and at the same time, the frictional force between the rolling sleeve 602 and the periphery of the wiped film device 2 will drive the rolling sleeve 602 to roll on the periphery of the wiped film device 2, so as to realize the revolution and rotation functions of the rolling sleeve 602. At this time, the inner cylindrical surface of the rolling sleeve 602 will drive the switching disk 606 at the lower end of the switching assembly 601 to rotate, and the switching disk 606 realizes the up and down reciprocating movement of the clamping strip 603 through the intermittent contact between the switching convex block 607 and the clamping strip 603.

[0043] As Figure 3 and Figure 4As shown, in the film scraping device 2, the first liquid pump 202 is fixedly installed at the upper end of the annular pipeline 203; the storage tank 204 is fixedly installed at the upper end of the second liquid pump 207; the upper end of the second liquid pump 207 is fixedly installed at the upper end of the annular pipeline 203; the feed pipe 205 is fixedly installed at the upper end of the heat conduction sleeve 217; the conical reaction cylinder 206 is fixedly installed at the upper end of the film scraping base 201; the third liquid pump 208 is fixedly installed at the upper end of the annular pipeline 203; the first gear 209 is fixedly installed at the output end of the servo motor 210; the servo motor 210 is fixedly installed vertically inside the film scraping base 201; the second gear 212 is fixedly installed at the lower end of the heat conduction sleeve 217; the second gear 212 also forms a gear pair with the first gear 209; the first power supply 211 is fixedly installed inside the film scraping base 201; the three flow buffering baffles 213 are distributed along the axis of the heat conduction sleeve 217 on the periphery of the heat conduction sleeve 217; the first heating resistor 214 is fixedly installed at the upper end of the first power supply 211; the outer cylindrical surface of the first heating resistor 214 is also rotationally connected to the inner cylindrical surface of the heat conduction sleeve 217; the four flow guiding discs 216 are distributed along the axis of the heat conduction sleeve 217 on the periphery of the heat conduction sleeve 217; flow guiding grooves are also provided on the flow guiding discs 216 in the radial direction; the film scraping blade 215 is fixedly installed on the periphery of the flow guiding disc 216; the outer surface of the film scraping blade 215 is also in frictional contact with the inner surface of the conical reaction cylinder 206.

[0044] As Figure 5 and Figure 6 shown, in the distillation device 3, the six rectifying cylinders 301 are respectively rotationally connected to the lower ends of the six self-cleaning components 302; the six rectifying cylinders 301 are also rotationally connected to the upper ends of the six switching components 601; the six self-cleaning components 302 are evenly distributed along the circumferential direction on the periphery of the distillation housing 303; the distillation housing 303 is rotationally connected to the upper end of the conical reaction cylinder 206; the bottom of the distillation housing 303 is communicated with the first liquid pump 202 through a pipeline; the clamping ring 304 is fixedly installed on the periphery of the rectifying cylinder 301; the distillation bump 305 is fixedly installed inside the distillation housing 303; the second heating resistor 306 is fixedly installed inside the distillation housing 303; the second heating resistor 306 is also fixedly connected to the side surface of the light component removal device 4.

[0045] As Figure 7As shown, in the self-cleaning component 302, the self-cleaning top cover 307 is fixedly installed on the periphery of the distillation housing 303; the self-cleaning top cover 307 is used for discharging products and dissipating heat; the third heating resistor 309 is fixedly installed at the lower end of the self-cleaning top cover 307; the third heating resistor 309 is also electrically connected to the second power supply 401; the magnetic slide rail 308 is fixedly installed on the periphery of the third heating resistor 309 along the axial direction of the third heating resistor 309; the linear motor 310 is slidably installed on the magnetic slide rail 308 along the axial direction of the third heating resistor 309; the cleaning flexible disc 311 is fixedly installed on the periphery of the linear motor 310; the outer cylindrical surface of the linear motor 310 is in frictional contact with the inner cylindrical surface of the rectification cylinder 301.

[0046] As Figure 8 As shown, in the light-component removal device 4, the second power supply 401 is fixedly installed on the side of the fourth heating resistor 405; the second power supply 401 is also fixedly connected to the side of the third heating resistor 309; the light-component removal housing 402 is fixedly installed on the upper end of the distillation housing 303; the bottom of the light-component removal housing 402 is communicated with the third liquid pump 208 through a pipeline; the light-component removal bump 403 is fixedly installed on the inner surface of the light-component removal housing 402; the discharge cylinder 404 is fixedly installed on the upper end of the light-component removal housing 402; the discharge cylinder 404 is also fixedly installed on the periphery of the feed pipe 205; the fourth heating resistor 405 is fixedly installed inside the light-component removal housing 402.

[0047] As Figure 9 and Figure 10As shown in the figure, in the condensation device 5, the condensation shells 501 of the two condensation devices 5 are fixedly installed at the upper and lower ends of the distillation outer shell 303; the condensation shell 501 at the lower end of the distillation outer shell 303 is rotatably connected to the upper end of the conical reaction cylinder 206; the condensation shell 501 at the upper end of the distillation outer shell 303 is fixedly installed at the lower end of the light component removal outer shell 402; the condensation shells 501 of the two condensation devices 5 are fixedly installed around the feed pipe 205; the heat energy connector 502 is fixedly installed at the upper end of the condensation shell 501; the heat energy connector 502 is also fixedly connected to the second heating resistor 306 and the fourth heating resistor 405 respectively; the condensation pump 503 is fixedly installed at the upper end of the condensation shell 501; the first condensation chamber 504 is fixedly installed inside the condensation shell 501; the second condensation chamber 505 is fixedly installed inside the condensation shell 501; a cooling tank is arranged inside the second condensation chamber 505; cooling oil is stored in the cooling tank in the second condensation chamber 505; the third condensation chamber 509 is fixedly installed inside the condensation shell 501; the fourth condensation chamber 510 is fixedly installed inside the condensation shell 501; a cooling tank is arranged inside the fourth condensation chamber 510; cooling oil is stored in the cooling tank in the fourth condensation chamber 510; the double-leaf valve 508 is rotatably connected inside the condensation shell 501; the condensation fixing plate 513 is fixedly installed inside the condensation shell 501; both ends of the spring 507 are fixedly installed on the side surface of the condensation fixing plate 513 and the side surface of the double-leaf valve 508 respectively; the spring 507 drives the double-leaf valve 508 to close the inlets of the second condensation chamber 505 and the fourth condensation chamber 510; the obtuse angle area clamped by the condensation fixing plate 513 and the double-leaf valve 508 is the transformation chamber 511; the heating rod 506 is fixedly installed inside the transformation chamber 511; the upper end of the heating rod 506 is fixedly connected to the lower end of the heat energy connector 502; the lower end of the heating rod 506 is in contact with the upper end of the conical reaction cylinder 206 and the upper end of the distillation outer shell 303 respectively; the chambers at the inlets of the second condensation chamber 505 and the fourth condensation chamber 510 are the first air inlet chambers 512; the chambers at the inlets of the first condensation chamber 504 and the third condensation chamber 509 are the second air inlet chambers 514.

[0048] As Figure 11 shown, in the rolling assembly 6, the outer cylindrical surface of the switching assembly 601 is also rotatably connected to the inner cylindrical surface of the rectifying cylinder 301; the friction roller 604 is fixedly installed around the rolling sleeve 602.

[0049] As Figure 12As shown, in the switching component 601, the outer cylindrical surface of the switching chassis 608 is rotatably connected to the inner cylindrical surface of the rectifying cylinder 301; the switching chassis 608 is fixedly installed at the upper end of the circulation pump 605; the outer cylindrical surface of the switching chassis 608 is also rotatably connected to the inner cylindrical surface of the rolling sleeve 602; the switching rotating column 609 is rotatably connected to the periphery of the switching chassis 608 along the axis direction of the switching chassis 608; the outer cylindrical surface of the switching rotating column 609 is also in frictional contact with the inner cylindrical surface of the rolling sleeve 602.

[0050] The operating conditions of this system are as follows:

[0051] The operating conditions of the wiped film device 2 are that the top operating pressure is 10.0 - 15.0 KPa (A), the top gas phase outlet temperature is 135 - 165 °C, and the bottom liquid phase outlet temperature is 165 - 215 °C;

[0052] The operating conditions of the distillation shell 303 of the distillation device 3 are that the top operating pressure is 10.0 - 15.0 KPa (A), the reflux ratio is 1 / 1 - 4 / 1, the top temperature is 110 - 130 °C, and the bottom temperature is 145 - 175 °C;

[0053] The top operating pressure of the de - light component device 4's de - light shell 402 is 10.0 - 15.0 KPa (A), the reflux ratio is 0.5 / 1 - 2 / 1, the top temperature is 95 - 105 °C, and the bottom temperature is 130 - 140 °C;

[0054] During the phenol rectification process, the operating conditions of the rectifying cylinder 301 are that the top operating pressure is 10.0 - 15.0 KPa (A), the reflux ratio is 4 / 1 - 8 / 1, the top temperature is 105.0 - 115.0 °C, and the bottom temperature is 145.0 - 155.0 °C;

[0055] During the decolorization reaction process, the operating conditions of the rectifying cylinder 301 are that the operating pressure is 10.0 - 15.0 KPa (A) and the operating temperature is 50 - 70 °C;

[0056] During the dehydration process, the top operating pressure of the rectifying cylinder 301 is 10.0 - 15.0 KPa (A), the reflux ratio is 0.5 / 1 - 2 / 1, the top temperature is 105 - 115 °C, and the bottom temperature is 145 - 155 °C;

[0057] During the o - cresol rectification process, the operating conditions of the rectifying cylinder 301 are that the top operating pressure is 10.0 - 15.0 KPa (A), the reflux ratio is 4 / 1 - 10 / 1, the top temperature is 115.0 - 125.0 °C, and the bottom temperature is 145.0 - 155.0 °C;

[0058] During the rectification process of m-cresol, the operating conditions of the rectification column 301 are as follows: the top operating pressure is 10.0 - 15.0 KPa (A), the reflux ratio is 3 / 1 - 10 / 1, the top temperature is 125.0 - 135.0 °C, and the bottom temperature is 155.0 - 165 °C;

[0059] During the rectification process of xylenol, the operating conditions of the rectification column 301 are as follows: the top operating pressure is 10.0 - 15.0 KPa (A), the reflux ratio is 4 / 1 - 10 / 1, the top temperature is 135.0 - 145.0 °C, and the bottom temperature is 165.0 - 175 °C.

[0060] The present invention uses inorganic strong acids as decolorizing agents during the decolorization reaction process, such as 60.0 - 98.0% sulfuric acid, hydrochloric acid, and phosphoric acid, and the addition amount is 0.5 - 6.0% of the crude phenol raw material amount.

[0061] The main equipment and process pipelines of the present invention are made of stainless steel materials, such as 06Cr19Ni10 and 022Cr17Ni12Mo2.

[0062] For the crude phenol feed liquid (3000 kg / h of crude phenol, with components of 0.27% water, 36.80% phenol, 6.86% o-cresol, 20.87% m / p-cresol, 3.65% xylenol, and 31.55% heavy components and others) recovered from the phenol-containing wastewater of long-flame coal gasification of a certain company, first, the crude phenol feed is poured into the wiped film device 2. At this time, the operating conditions of the wiped film device 2 are that the top operating pressure is 12.0 KPa (A), the outlet temperature of the gas phase at the top is 163 °C, and the outlet temperature of the liquid phase at the bottom is 182 °C; the gas-phase components at the top are condensed by the condensing device 5 and then enter the distillation shell 303 of the distillation device 3. The operating conditions of the distillation shell 303 are that the top operating pressure is 12.0 KPa (A), the reflux ratio is 3 / 1, the top temperature is 119 °C, and the bottom temperature is 165 °C; subsequently, the crude xylenol remains at the bottom of the distillation shell 303. The phenol components lighter than the crude xylenol are condensed by the condensing device 5 and then enter the de-lighting shell 402 of the de-lighting device 4. The operating conditions of the de-lighting shell 402 are that the top operating pressure is 12.0 KPa, the reflux ratio is total reflux, with intermittent extraction, the top temperature is 100 °C, and the bottom temperature is 135 °C; the phenol components in the bottom of the de-lighting shell 402 that are not less than the boiling point of phenol are alternately rectified in the three rectifying cylinders 301 on the right side of the axis of the distillation shell 303 and in the three rectifying cylinders 301 on the left and right sides of the axis of the distillation shell 303 to obtain crude xylenol. The crude xylenol in the rectifying cylinders 301 and the crude xylenol at the bottom of the distillation shell 303 enter the six rectifying cylinders 301 together for rectification; during the phenol rectification process, the operating conditions of the rectifying cylinder 301 are that the bottom and top operating pressures are 10.0 KPa (A), the reflux ratio is 4 / 1, the top temperature is 115.0 °C, and the bottom temperature is 147.0 °C; during the decolorization reaction process, the mixed phenol in the rectifying cylinder 301 is mixed and reacted with 90% sulfuric acid. The operating conditions of the rectifying cylinder 301 are that the operating pressure is 10.0 KPa (A) and the operating temperature is 70 °C; during the dehydration process, the top operating pressure of the rectifying cylinder 301 is 10.0 KPa (A), the reflux ratio is 2 / 1, the top temperature is 105 °C, and the bottom temperature is 145 °C; during the o-cresol rectification process, the operating conditions of the rectifying cylinder 301 are that the top operating pressure is 10.0 KPa (A), the reflux ratio is 9 / 1, the top temperature is 118 °C, and the bottom temperature is 149.0 °C; during the m / p-cresol rectification process, the operating conditions of the rectifying cylinder 301 are that the top operating pressure is 10.0 KPa (A), the reflux ratio is 8 / 1, the top temperature is 134.0 °C, and the bottom temperature is 158.0 °C; during the xylenol rectification process, the operating conditions of the rectifying cylinder 301 are that the top operating pressure is 10.0 KPa (A), the reflux ratio is 6 / 1, the top temperature is 140.0 °C, and the bottom temperature is 165.0 °C. The technical indicators of the obtained products are: phenol (product purity is 99.6 wt%), o-cresol (product purity is 99.0 wt%), m / p-cresol (product purity is 96.0 wt%).

[0063] Working principle of the present invention: Figure 1 and Figure 2 The usage mode of the present invention and the corresponding scenarios are given. The attitude control in the process of refining crude phenol by coal gasification is determined by the film scraping device 2, the distillation device 3, the condensation device 5 and the rolling component 6. The attitudes of the condensation device 5 and the rolling component 6 are determined by the distillation device 3, and the attitude of the distillation device 3 is determined by the film scraping device 2. The film scraping device 2 is the core in the process of refining crude phenol by coal gasification.

[0064] Taking a preferred embodiment as an example, the crude phenol raw material is fed into the conical reaction cylinder 206 from the feed pipe 205 of the wiped film device 2. Subsequently, the servo motor 210 in the wiped film base 201 drives the second gear 212 to rotate through the first gear 209. The second gear 212 drives the heat conduction sleeve 217 to rotate, and the heat conduction sleeve 217 drives the four flow guiding discs 216 and the wiping film 215 to rotate synchronously. The flow guiding discs 216 drive the crude phenol raw material to be thrown out along the flow guiding grooves on the flow guiding discs 216 to the outer surface of the wiping film 215 by centrifugal force, and the wiping film 215 smears the crude phenol raw material evenly on the inner surface of the conical reaction cylinder 206. Subsequently, the first power supply 211 supplies current to the first heating resistor 214, and the first heating resistor 214 heats the crude phenol raw material in the conical reaction cylinder 206, so that the phenolic components in the crude phenol raw material are heated and converted into gas phase. The gaseous phenolic components enter the condensation device 5 at the lower end of the distillation device 3 from the upper end of the conical reaction cylinder 206. After the gaseous phenolic components are cooled by the condensation device 5, they are then transported to the distillation outer shell 303 of the distillation device 3 through the condensate pump 503 in the condensation device 5. At the same time, the second power supply 401 on the light component removal device 4 supplies power to the second heating resistor 306, so that the second heating resistor 306 heats the phenolic components in the distillation outer shell 303 to separate the crude xylenol from the phenolic components lighter than the crude xylenol. At this time, the crude xylenol remains at the bottom of the distillation outer shell 303, and the phenolic components lighter than the crude xylenol enter the condensation device 5 at the upper end of the distillation device 3. After the phenolic components lighter than the crude xylenol are cooled by the condensation device 5, they are then transported to the light component removal outer shell 402 of the light component removal device 4 through the condensate pump 503. Subsequently, the second power supply 401 supplies power to the fourth heating resistor 405, so that the fourth heating resistor 405 heats the phenolic components in the light component removal outer shell 402 to separate the phenolic components not less than the boiling point of phenol from the fractions less than the boiling point of phenol. The phenolic components not less than the boiling point of phenol enter the annular pipe 203 through the pipeline at the bottom of the light component removal outer shell 402 and the third liquid pump 208, while the fractions less than the boiling point of phenol are discharged from the side of the discharge cylinder 404. Subsequently, the circulation pump 605 in the rolling assembly 6 transports the phenolic components not less than the boiling point of phenol to the three rectifying cylinders 301 on the right side of the axis of the distillation outer shell 303. The third heating resistor 309 in the self-cleaning assembly 302 heats the phenolic components not less than the boiling point of phenol, so that phenol distills out from the upper end of the self-cleaning top cover 307, and the mixed phenol at the bottom will enter the three rectifying cylinders 301 on the left side of the axis of the distillation outer shell 303 through the circulation pump 605 and the annular pipe 203.Subsequently, the second liquid pump 207 sucks out the inorganic strong acid in the storage tank 204 and transports it into the three rectification cylinders 301 on the left side of the axis of the distillation housing 303. In the rectification cylinders 301, the inorganic strong acid reacts with the mixed phenol for decolorization. Subsequently, the decolorized mixed phenol enters the three rectification cylinders 301 on the right side of the axis of the distillation housing 303 through the circulation pump 605 and the annular pipeline 203. The third heating resistor 309 heats the decolorized mixed phenol, so that the water and the fractions lighter than o-cresol are discharged from the upper end of the self-cleaning top cover 307. The dehydrated mixed phenol enters the three rectification cylinders 301 on the left side of the axis of the distillation housing 303 through the circulation pump 605 and the annular pipeline 203. Subsequently, the third heating resistor 309 heats the dehydrated mixed phenol, so that o-cresol distills out from the upper end of the self-cleaning top cover 307, and the crude m-p-cresol at the bottom enters the three rectification cylinders 301 on the right side of the axis of the distillation housing 303 through the circulation pump 605 and the annular pipeline 203. Subsequently, the third heating resistor 309 heats the crude m-p-cresol, so that m-p-cresol distills out from the upper end of the self-cleaning top cover 307, and the crude xylenol at the bottom of the rectification cylinder 301 is retained. Subsequently, the first liquid pump 202 transports the crude xylenol at the bottom of the distillation housing 303 into the six rectification cylinders 301 respectively, and then heats the crude xylenol through the third heating resistor 309, so that xylenol distills out from the upper end of the self-cleaning top cover 307, and the higher phenol at the bottom of the rectification cylinder 301 is retained. During the condensation process, the heating rod 506 in the condensation device 5 heats the air in the conversion chamber 511 through the waste heat of the second heating resistor 306 and the fourth heating resistor 405. Subsequently, the high-temperature and high-pressure gas in the spring 507 and the conversion chamber 511 drives the double-leaf valve 508 to close the inlets of the second condensation chamber 505 and the fourth condensation chamber 510. Subsequently, the gas enters the first air inlet chamber 512 and the second air inlet chamber 514 at the same time. At this time, the gas preferentially enters the first condensation chamber 504 and the third condensation chamber 509. When the gas pressure in the first air inlet chamber 512 is greater than the pressure in the conversion chamber 511, the pressure drives the double-leaf valve 508 to open the inlets of the second condensation chamber 505 and the fourth condensation chamber 510 to achieve the alternate cooling function;During the rotation of the heat-conducting sleeve 217, the heat-conducting sleeve 217 drives the distillation outer shell 303, the condensation housing 501, and the light-component removal outer shell 402 to rotate together through the feed pipe 205. Subsequently, the distillation outer shell 303 drives the switching assembly 601 and the annular pipe 203 to rotate on the upper end of the wiping film base 201. The switching assembly 601 drives the friction rollers 604 on the rolling sleeve 602 to revolve around the periphery of the conical reaction cylinder 206. At the same time, the frictional force also drives the rolling sleeve 602 to roll on the periphery of the conical reaction cylinder 206. At this time, the inner cylindrical surface of the rolling sleeve 602 drives the switching disk 606 at the lower end of the switching column 609 to rotate. The switching disk 606 realizes the reciprocating up-and-down movement of the clamping strip 603 through the intermittent contact between the switching protrusions 607 and the clamping strip 603. At this time, the clamping strip 603 intermittently contacts the clamping ring 304, causing the rectifying cylinder 301 to rotate intermittently to realize the auxiliary centrifugal rotation function; through the rotation of the mixed phenol flowing in and out of the six rectifying cylinders 301, and the reciprocating sliding of the linear motor 310 in the self-cleaning assembly 302 driving the cleaning flexible disk 311 on the inner wall of the rectifying cylinder 301, the reciprocating rectifying function and the self-cleaning function are realized. At the same time, the design of the six rectifying cylinders 301 also reduces the total area of the site occupied by the equipment; the support housing 1 is fixedly installed on the periphery of the wiping film base 201.;

[0065] Specifically, such as Figure 3 、 Figure 4 、 Figure 5 、 Figure 6 、 Figure 7 and Figure 8As shown, the crude phenol raw material is fed into the conical reaction cylinder 206 from the feed pipe 205. Subsequently, the servo motor 210 in the scraping film base 201 drives the second gear 212 to rotate through the first gear 209. The second gear 212 drives the heat conduction sleeve 217 to rotate. The heat conduction sleeve 217 drives the four guide plates 216 and the scraping film 215 to rotate synchronously. The guide plates 216 drive the crude phenol raw material to be thrown out along the guide grooves on the guide plates 216 to the outer surface of the scraping film 215 by centrifugal force. The scraping film 215 smears the crude phenol raw material on the inner surface of the conical reaction cylinder 206. At the same time, the crude phenol raw material will also seep downward through the through holes of the guide plates 216. When the crude phenol raw material falls onto the slow flow baffle 213, it will temporarily stop falling. Subsequently, the centrifugal force generated by the rotation of the slow flow baffle 213 will throw the crude phenol raw material outward. The thrown crude phenol raw material will continue to fall into the next guide plate 216, thus preventing the crude phenol raw material from depositing at the bottom end of the conical reaction cylinder 206 due to too fast a falling speed. Subsequently, the first power supply 211 supplies current to the first heating resistor 214. The first heating resistor 214 heats the crude phenol raw material on the inner surface of the conical reaction cylinder 206, causing the phenolic components in the crude phenol raw material to be converted into gas phase. The gaseous phenolic components enter the condensing device 5 at the lower end of the distillation outer shell 303 from the upper end of the conical reaction cylinder 206. After the gaseous phenolic components are cooled by the condensing device 5, they are transported into the distillation outer shell 303 by the condensate pump 503 in the condensing device 5. At the same time, the second power supply 401 supplies electricity to the second heating resistor 306, causing the second heating resistor 306 to heat the phenolic components in the distillation outer shell 303 to separate the crude xylenol from the phenolic components lighter than the crude xylenol. At this time, the crude xylenol remains at the bottom of the distillation outer shell 303, and the phenolic components lighter than the crude xylenol enter the condensing device 5 at the upper end of the distillation outer shell 303. After the phenolic components lighter than the crude xylenol are cooled by the condensing device 5, they are transported into the de-lighting shell 402 of the de-lighting device 4 by the condensate pump 503. Subsequently, the second power supply 401 supplies electricity to the fourth heating resistor 405, causing the fourth heating resistor 405 to heat the phenolic components in the de-lighting shell 402 to separate the phenolic components not less than the boiling point of phenol from the fractions less than the boiling point of phenol. The phenolic components not less than the boiling point of phenol enter the annular pipe 203 through the pipe at the bottom of the de-lighting shell 402 and the third liquid pump 208, while the fractions less than the boiling point of phenol are discharged from the side of the discharge cylinder 404. Subsequently, the circulation pump 605 in the rolling assembly 6 transports the phenolic components not less than the boiling point of phenol into the three rectifying cylinders 301 on the right side of the axis of the distillation outer shell 303. The third heating resistor 309 in the self-cleaning assembly 302 heats the phenolic components not less than the boiling point of phenol, causing phenol to distill out from the upper end of the self-cleaning top cover 307, and the mixed phenol at the bottom will enter the three rectifying cylinders 301 on the left side of the axis of the distillation outer shell 303 through the circulation pump 605 and the annular pipe 203.Subsequently, the second liquid pump 207 sucks out the inorganic strong acid in the storage tank 204 and transports it into the three rectification cylinders 301 on the left side of the axis of the distillation outer shell 303. In the rectification cylinder 301, the inorganic strong acid reacts with the mixed phenol for decolorization. Subsequently, the decolorized mixed phenol enters the three rectification cylinders 301 on the right side of the axis of the distillation outer shell 303 through the circulation pump 605 and the annular pipeline 203. The third heating resistor 309 heats the decolorized mixed phenol, causing the water and fractions lighter than o-cresol to be discharged from the upper end of the self-cleaning top cover 307. The dehydrated mixed phenol then enters the three rectification cylinders 301 on the left side of the axis of the distillation outer shell 303 through the circulation pump 605 and the annular pipeline 203. Subsequently, the third heating resistor 309 heats the dehydrated mixed phenol, causing o-cresol to distill out from the upper end of the self-cleaning top cover 307. The crude m,p-cresol at the bottom enters the three rectification cylinders 301 on the right side of the axis of the distillation outer shell 303 through the circulation pump 605 and the annular pipeline 203. Subsequently, the third heating resistor 309 heats the crude m,p-cresol, causing m,p-cresol to distill out from the upper end of the self-cleaning top cover 307. The crude xylenol at the bottom of the rectification cylinder 301 is retained. Subsequently, the first liquid pump 202 transports the crude xylenol at the bottom of the distillation outer shell 303 into the six rectification cylinders 301 respectively, and then the third heating resistor 309 heats the crude xylenol, causing xylenol to distill out from the upper end of the self-cleaning top cover 307. The higher-grade phenol at the bottom of the rectification cylinder 301 is retained. When the mixed phenol in the rectification cylinder 301 is discharged, the linear motor 310 on the self-cleaning assembly 302 slides up and down on the magnetic slide rail 308. At this time, the linear motor 310 drives the cleaning flexible disk 311 to reciprocate on the inner wall of the rectification cylinder 301, scraping the residual mixed phenol on the inner wall of the rectification cylinder 301 downward to achieve the self-cleaning function of the rectification cylinder 301. When the heat conduction sleeve 217 rotates, the heat conduction sleeve 217 drives the distillation outer shell 303 and the light-eliminating outer shell 402 to rotate through the feed pipe 205. At this time, the distillation bumps 305 on the distillation outer shell 303 and the light-eliminating bumps 403 on the light-eliminating outer shell 402 disturb the mixture, enabling the mixture to fully exchange heat with the second heating resistor 306 and the fourth heating resistor 405 to improve the heating and distillation efficiency.

[0066] Such as Figure 9 , Figure 10 , Figure 11 and Figure 12As shown in the figure, during the condensation process, the heating rod 506 in the conversion chamber 511 transfers the waste heat of the second heating resistor 306 and the fourth heating resistor 405 to the conversion chamber 511 through the heat energy connector 502 to heat the air in the conversion chamber 511. Subsequently, the high-temperature and high-pressure gas in the conversion chamber 511 drives the double-leaf valve 508 through the spring 507 to close the inlets of the second condensation chamber 505 and the fourth condensation chamber 510, while the inlets of the first condensation chamber 504 and the third condensation chamber 509 are in the open state. Subsequently, the gas will enter the first intake chamber 512 and the second intake chamber 514 in the condensation housing 501 simultaneously. At this time, the gas will preferentially enter the first condensation chamber 504 and the third condensation chamber 509 until the first condensation chamber 504 and the third condensation chamber 509 are filled. Subsequently, when the gas continues to enter the first intake chamber 512, the gas pressure in the first intake chamber 512 will be greater than the pressure in the conversion chamber 511. The gas pressure in the first intake chamber 512 will drive the double-leaf valve 508 to open the inlets of the second condensation chamber 505 and the fourth condensation chamber 510 and close the inlets of the first condensation chamber 504 and the third condensation chamber 509 to achieve the alternate cooling function; the cooling tanks provided in the second condensation chamber 505 and the fourth condensation chamber 510 will accelerate the heat dissipation and condensation of the gas; during the rotation of the heat conduction sleeve 217, the heat conduction sleeve 217 drives the distillation housing 303, the condensation housing 501, and the light-removing housing 402 to rotate together through the feed pipe 205. Subsequently, the distillation housing 303 drives the switching assembly 601 and the annular pipe 203 to rotate on the upper end of the scraping film base 201. The switching assembly 601 drives the friction rollers 604 on the rolling sleeve 602 to revolve around the periphery of the conical reaction cylinder 206. At the same time, the frictional force will also drive the rolling sleeve 602 to roll on the periphery of the conical reaction cylinder 206. At this time, the inner cylindrical surface of the rolling sleeve 602 will increase the frictional force to drive the switching column 609 on the switching chassis 608 to rotate. The switching column 609 drives the switching disc 606 to rotate. The switching disc 606 intermittently contacts the clamping strip 603 through the switching protrusion 607 to achieve the reciprocating up and down movement of the clamping strip 603. At this time, the clamping strip 603 will intermittently contact the clamping ring 304, causing the rectifying cylinder 301 to rotate intermittently to achieve the auxiliary centrifugal rotation function, so that the mixture in the rectifying cylinder 301 shakes violently through the intermittent centrifugal force and inertia, further improving the rectification efficiency; the condensation fixing plate 513 is used to separate the space.

[0067] A method for refining crude phenol from coal gasification, such as the above-mentioned crude phenol refining system for coal gasification, includes the following steps:

[0068] Step 1: Feed the crude phenol raw material into the conical reaction cylinder 206 through the feed pipe 205 of the wiped film device 2. Subsequently, the servo motor 210 in the wiped film base 201 drives the second gear 212 to rotate through the first gear 209. The second gear 212 drives the heat conduction sleeve 217 to rotate, and the heat conduction sleeve 217 drives the four flow guiding discs 216 and the wiping film 215 to rotate synchronously. The flow guiding discs 216 drive the crude phenol raw material to be thrown out along the flow guiding grooves on the flow guiding discs 216 to the outer surface of the wiping film 215 by centrifugal force, and the wiping film 215 smears the crude phenol raw material on the inner surface of the conical reaction cylinder 206;

[0069] Step 2: The first power supply 211 passes an electric current through the first heating resistor 214, and the first heating resistor 214 heats the crude phenol raw material in the conical reaction cylinder 206, causing the phenol components in the crude phenol raw material to be heated and converted into a gas phase. The gaseous phenol components enter the condensation device 5 at the lower end of the distillation device 3 from the upper end of the conical reaction cylinder 206;

[0070] Step 3: After the gaseous phenol components are cooled by the condensation device 5, they are then transported to the distillation outer shell 303 of the distillation device 3 through the condensate pump 503 in the condensation device 5. At the same time, the second power supply 401 on the light component removal device 4 energizes the second heating resistor 306, causing the second heating resistor 306 to heat the phenol components in the distillation outer shell 303, separating the crude xylenol from the phenol components lighter than the crude xylenol. At this time, the crude xylenol remains at the bottom of the distillation outer shell 303, and the phenol components lighter than the crude xylenol enter the condensation device 5 at the upper end of the distillation device 3;

[0071] Step 4: After the phenol components lighter than the crude xylenol are cooled by the condensation device 5, they are then transported to the light component removal outer shell 402 of the light component removal device 4 through the condensate pump 503. Subsequently, the second power supply 401 energizes the fourth heating resistor 405, causing the fourth heating resistor 405 to heat the phenol components in the light component removal outer shell 402, separating the phenol components not less than the boiling point of phenol from the fractions less than the boiling point of phenol. The phenol components not less than the boiling point of phenol enter the annular pipe 203 through the pipe at the bottom of the light component removal outer shell 402 and the third liquid pump 208, while the fractions less than the boiling point of phenol are discharged from the side of the discharge cylinder 404;

[0072] Step 5: Subsequently, the circulation pump 605 in the rolling assembly 6 transports the phenol components not less than the boiling point of phenol to the three rectification cylinders 301 on the right side of the axis of the distillation outer shell 303. The third heating resistor 309 in the self-cleaning assembly 302 heats the phenol components not less than the boiling point of phenol, causing phenol to distill out from the upper end of the self-cleaning top cover 307, and the mixed phenol at the bottom will enter the three rectification cylinders 301 on the left side of the axis of the distillation outer shell 303 through the circulation pump 605 and the annular pipe 203;

[0073] Step Six: Subsequently, the second liquid pump 207 sucks out the inorganic strong acid in the storage tank 204 and transports it into the three rectification cylinders 301 on the left side of the axis of the distillation outer shell 303. In the rectification cylinders 301, the inorganic strong acid reacts with the mixed phenol for decolorization. Subsequently, the decolorized mixed phenol enters the three rectification cylinders 301 on the right side of the axis of the distillation outer shell 303 through the circulation pump 605 and the annular pipeline 203. The third heating resistor 309 heats the decolorized mixed phenol, causing the water and fractions lighter than o-cresol to be discharged from the upper end of the self-cleaning top cover 307. The dehydrated mixed phenol then enters the three rectification cylinders 301 on the left side of the axis of the distillation outer shell 303 through the circulation pump 605 and the annular pipeline 203;

[0074] Step Seven: The third heating resistor 309 heats the dehydrated mixed phenol, causing o-cresol to distill out from the upper end of the self-cleaning top cover 307. The crude m,p-cresol at the bottom enters the three rectification cylinders 301 on the right side of the axis of the distillation outer shell 303 through the circulation pump 605 and the annular pipeline 203. Subsequently, the third heating resistor 309 heats the crude m,p-cresol, causing m,p-cresol to distill out from the upper end of the self-cleaning top cover 307. The crude xylenol at the bottom of the rectification cylinder 301 is retained. Subsequently, the first liquid pump 202 transports the crude xylenol at the bottom of the distillation outer shell 303 into the six rectification cylinders 301 respectively. Then, the third heating resistor 309 heats the crude xylenol, causing xylenol to distill out from the upper end of the self-cleaning top cover 307. The higher-grade phenol at the bottom of the rectification cylinder 301 is retained;

[0075] Step Eight: While Steps Three and Four are being carried out, the heating rod 506 in the condensation device 5 heats the air in the transformation chamber 511 by using the waste heat of the second heating resistor 306 and the fourth heating resistor 405. Subsequently, the high-temperature and high-pressure gas in the spring 507 and the transformation chamber 511 drives the double-leaf valve 508 to close the inlets of the second condensation chamber 505 and the fourth condensation chamber 510. Subsequently, the gas enters the first intake chamber 512 and the second intake chamber 514 simultaneously. At this time, the gas preferentially enters the first condensation chamber 504 and the third condensation chamber 509. When the gas pressure in the first intake chamber 512 is greater than the pressure in the transformation chamber 511, the pressure drives the double-leaf valve 508 to open the inlets of the second condensation chamber 505 and the fourth condensation chamber 510 to achieve the alternate cooling function;

[0076] Step Nine: While Step One is being carried out, the heat-conducting sleeve 217 drives the distillation outer shell 303, the condensation housing 501, and the light-component removal outer shell 402 to rotate together through the feed pipe 205. Subsequently, the distillation outer shell 303 drives the switching assembly 601 and the annular pipeline 203 to rotate on the upper end of the scraping film base 201. The switching assembly 601 drives the friction rollers 604 on the rolling sleeve 602 to revolve around the periphery of the conical reaction cylinder 206. At the same time, the frictional force also drives the rolling sleeve 602 to roll on the periphery of the conical reaction cylinder 206. At this time, the inner cylindrical surface of the rolling sleeve 602 drives the switching disk 606 at the lower end of the switching rotating column 609 to rotate. The switching disk 606 realizes the reciprocating up-and-down movement of the clamping strip 603 through the intermittent contact between the switching convex block 607 and the clamping strip 603. At this time, the clamping strip 603 intermittently contacts the clamping ring 304, causing the rectifying cylinder 301 to rotate intermittently, so as to realize the auxiliary centrifugal rotation function.

[0077] The present invention is not limited to the above specific embodiments. Those skilled in the art can make various changes starting from the above concepts without creative labor, and all such changes fall within the protection scope of the present invention.

Claims

1. A crude phenol refining system for coal gasification, comprising a support shell (1), a wiped film device (2), a distillation device (3), a light component removal device (4), a condensation device (5), and a rolling assembly (6), characterized in that: The support housing (1) is fixedly installed on the periphery of the wiped-film device (2); two condensation devices (5) are respectively fixedly installed at the upper and lower ends of the distillation device (3); the condensation device (5) at the lower end of the distillation device (3) is rotatably connected to the upper end of the wiped-film device (2); the condensation device (5) at the upper end of the distillation device (3) is also fixedly connected to the lower end of the light-component removal device (4); the wiped-film device (2) is provided with a wiped-film base (201) and an annular pipeline (203); the outer cylindrical surface of the wiped-film base (201) is fixedly connected to the inner cylindrical surface of the support housing (1); the annular pipeline (203) is rotatably connected to the upper end of the wiped-film base (201) along the circumferential direction of the wiped-film base (201); the rolling assembly (6) is provided with a switching assembly (601), a rolling sleeve (602), a clamping strip (603), a circulation pump (605), a switching disk (606), and a switching convex block (607); the switching assembly (601) is rotatably connected to the lower end of the distillation device (3); the circulation pump (605) is fixedly installed at the lower end of the switching assembly (601); the circulation pump (605) is also fixedly installed at the upper end of the annular pipeline (203); the rolling sleeve (602) is rotatably connected to the periphery of the switching assembly (601); the clamping strip (603) is slidably installed on the outer cylindrical surface of the rolling sleeve (602) along the axial direction of the rolling sleeve (602); the upper end of the switching disk (606) is fixedly installed at the lower end of the switching assembly (601); the switching convex block (607) is fixedly installed at the upper end of the switching disk (606); the distillation device (3) includes a rectification cylinder (301), a self-cleaning assembly (302), and a clamping ring (304); six rectification cylinders (301) are respectively rotatably connected to the lower ends of six self-cleaning assemblies (302); six rectification cylinders (301) are also rotatably connected to the upper ends of six switching assemblies (601); the clamping ring (304) is fixedly installed on the periphery of the rectification cylinder (301); when the wiped-film device (2) drives the distillation device (3), the distillation device (3) will drive the switching assembly (601) and the annular pipeline (203) to rotate on the upper end of the wiped-film base (201), the switching assembly (601) drives the rolling sleeve (602) to revolve around the periphery of the wiped-film device (2), and at the same time, the frictional force between the rolling sleeve (602) and the periphery of the wiped-film device (2) will drive the rolling sleeve (602) to roll on the periphery of the wiped-film device (2), so as to realize the revolution and rotation functions of the rolling sleeve (602). At this time, the inner cylindrical surface of the rolling sleeve (602) will drive the switching disk (606) at the lower end of the switching assembly (601) to rotate. The switching disk (606) realizes the reciprocating up and down movement of the clamping strip (603) through the intermittent contact between the switching convex block (607) and the clamping strip (603). At this time, the clamping strip (603) will intermittently contact the clamping ring (304), so that the rectification cylinder (301) performs intermittent self-rotation to realize the auxiliary centrifugal rotation function.

2. The coal gasification crude phenol refining system according to claim 1, wherein: The scraping film device (2) further includes a first liquid pump (202), a storage tank (204), a feed pipe (205), a conical reaction cylinder (206), a second liquid pump (207), a third liquid pump (208), a first gear (209), a servo motor (210), a first power supply (211), a second gear (212), a flow retarder baffle (213), a first heating resistor (214), a scraping film blade (215), a flow guiding disk (216), and a heat conducting sleeve (217); the first liquid pump (202) is fixedly installed at the upper end of the annular pipe (203); the storage tank (204) is fixedly installed at the upper end of the second liquid pump (207); the upper end of the second liquid pump (207) is fixedly installed at the upper end of the annular pipe (203); the feed pipe (205) is fixedly installed at the upper end of the heat conducting sleeve (217); the conical reaction cylinder (206) is fixedly installed at the upper end of the scraping film base (201); the third liquid pump (208) is fixedly installed at the upper end of the annular pipe (203); the first gear (209) is fixedly installed at the output end of the servo motor (210); the servo motor (210) is fixedly installed vertically inside the scraping film base (201); the second gear (212) is fixedly installed at the lower end of the heat conducting sleeve (217); the second gear (212) also forms a gear pair with the first gear (209); the first power supply (211) is fixedly installed inside the scraping film base (201); three flow retarder baffles (213) are distributed along the axis direction of the heat conducting sleeve (217) on the periphery of the heat conducting sleeve (217); the first heating resistor (214) is fixedly installed at the upper end of the first power supply (211); the outer cylindrical surface of the first heating resistor (214) is also rotationally connected to the inner cylindrical surface of the heat conducting sleeve (217); four flow guiding disks (216) are distributed along the axis direction of the heat conducting sleeve (217) on the periphery of the heat conducting sleeve (217); flow guiding grooves are further provided on the flow guiding disk (216) in the radial direction; the scraping film blade (215) is fixedly installed on the periphery of the flow guiding disk (216); the outer surface of the scraping film blade (215) is also in frictional contact with the inner surface of the conical reaction cylinder (206).

3. The coal gasification crude phenol refining system according to claim 2, characterized in that: The distillation device (3) further includes a distillation outer shell (303), a distillation bump (305), and a second heating resistor (306); six self-cleaning components (302) are evenly distributed along the circumferential direction on the periphery of the distillation outer shell (303); the distillation outer shell (303) is rotationally connected to the upper end of the conical reaction cylinder (206); the bottom of the distillation outer shell (303) is communicated with the first liquid pump (202) through a pipe; the distillation bump (305) is fixedly installed inside the distillation outer shell (303); the second heating resistor (306) is fixedly installed inside the distillation outer shell (303); the second heating resistor (306) is also fixedly connected to the side surface of the light component removal device (4).

4. The coal gasification crude phenol refining system according to claim 3, characterized in that: The self-cleaning component (302) includes a self-cleaning top cover (307), a magnetic slide rail (308), a third heating resistor (309), a linear motor (310), and a cleaning flexible disc (311); the self-cleaning top cover (307) is fixedly installed on the periphery of the distillation housing (303); the self-cleaning top cover (307) is used for the discharge and heat dissipation of the product; the third heating resistor (309) is fixedly installed at the lower end of the self-cleaning top cover (307); the third heating resistor (309) is also electrically connected to the second power supply (401); the magnetic slide rail (308) is fixedly installed on the periphery of the third heating resistor (309) along the axial direction of the third heating resistor (309); the linear motor (310) is slidably installed on the magnetic slide rail (308) along the axial direction of the third heating resistor (309); the cleaning flexible disc (311) is fixedly installed on the periphery of the linear motor (310); the outer cylindrical surface of the linear motor (310) is in frictional contact with the inner cylindrical surface of the rectification cylinder (301).

5. The coal gasification crude phenol refining system according to claim 4, wherein: The light-component removal device (4) includes a second power supply (401), a light-component removal housing (402), a light-component removal bump (403), a discharge cylinder (404), and a fourth heating resistor (405); the second power supply (401) is fixedly installed on the side of the fourth heating resistor (405); the second power supply (401) is also fixedly connected to the side of the third heating resistor (309); the light-component removal housing (402) is fixedly installed on the upper end of the distillation housing (303); the bottom of the light-component removal housing (402) is communicated with the third liquid pump (208) through a pipeline; the light-component removal bump (403) is fixedly installed on the inner surface of the light-component removal housing (402); the discharge cylinder (404) is fixedly installed on the upper end of the light-component removal housing (402); the discharge cylinder (404) is also fixedly installed on the periphery of the feed pipe (205); the fourth heating resistor (405) is fixedly installed inside the light-component removal housing (402).

6. The coal gasification crude phenol refining system according to claim 5, characterized in that: The condensation device (5) includes a condensation housing (501), a heat energy connector (502), and a condensation pump (503); the condensation housings (501) of two condensation devices (5) are fixedly installed at the upper and lower ends of the distillation housing (303) respectively; the condensation housing (501) at the lower end of the distillation housing (303) is rotatably connected to the upper end of the conical reaction cylinder (206); the condensation housing (501) at the upper end of the distillation housing (303) is fixedly installed at the lower end of the light-component removal housing (402); the condensation housings (501) of two condensation devices (5) are fixedly installed on the periphery of the feed pipe (205); the heat energy connector (502) is fixedly installed at the upper end of the condensation housing (501); the heat energy connector (502) is also fixedly connected to the second heating resistor (306) and the fourth heating resistor (405) respectively; the condensation pump (503) is fixedly installed at the upper end of the condensation housing (501).

7. The coal gasification crude phenol refining system according to claim 6, characterized in that: The condensation device (5) further includes a first condensation chamber (504), a second condensation chamber (505), a heating rod (506), a spring (507), a double-leaf valve (508), a third condensation chamber (509), a fourth condensation chamber (510), a transformation chamber (511), a first air inlet chamber (512), a condensation fixing plate (513), and a second air inlet chamber (514); the first condensation chamber (504) is fixedly installed inside the condensation housing (501); the second condensation chamber (505) is fixedly installed inside the condensation housing (501); a cooling tank is provided inside the second condensation chamber (505); cooling oil is stored in the cooling tank in the second condensation chamber (505); the third condensation chamber (509) is fixedly installed inside the condensation housing (501); the fourth condensation chamber (510) is fixedly installed inside the condensation housing (501); a cooling tank is provided inside the fourth condensation chamber (510); cooling oil is stored in the cooling tank in the fourth condensation chamber (510); the double-leaf valve (508) is rotatably connected inside the condensation housing (501); the condensation fixing plate (513) is fixedly installed inside the condensation housing (501); both ends of the spring (507) are respectively fixedly installed on the side surface of the condensation fixing plate (513) and the side surface of the double-leaf valve (508); the spring (507) drives the double-leaf valve (508) to close the inlets of the second condensation chamber (505) and the fourth condensation chamber (510); the obtuse angle area clamped by the condensation fixing plate (513) and the double-leaf valve (508) is the transformation chamber (511); the heating rod (506) is fixedly installed inside the transformation chamber (511); the upper end of the heating rod (506) is fixedly connected to the lower end of the heat energy connector (502); the lower end of the heating rod (506) is respectively in contact with the upper end of the conical reaction cylinder (206) and the upper end of the distillation housing (303); the chambers at the inlets of the second condensation chamber (505) and the fourth condensation chamber (510) are the first air inlet chamber (512); the chambers at the inlets of the first condensation chamber (504) and the third condensation chamber (509) are the second air inlet chamber (514).

8. The coal gasification crude phenol refining system according to claim 7, characterized in that: The rolling assembly (6) further includes a friction roller (604); the outer cylindrical surface of the switching assembly (601) is also rotatably connected to the inner cylindrical surface of the rectification cylinder (301); the friction roller (604) is fixedly installed on the periphery of the rolling sleeve (602).

9. The coal gasification crude phenol refining system according to claim 8, wherein: The switching assembly (601) includes a switching chassis (608) and a switching rotating column (609); the outer cylindrical surface of the switching chassis (608) is rotatably connected to the inner cylindrical surface of the rectification cylinder (301); the switching chassis (608) is fixedly installed on the upper end of the circulation pump (605); the outer cylindrical surface of the switching chassis (608) is also rotatably connected to the inner cylindrical surface of the rolling sleeve (602); the switching rotating column (609) is rotatably connected along the axis direction of the switching chassis (608) on the periphery of the switching chassis (608); the outer cylindrical surface of the switching rotating column (609) is also in frictional contact with the inner cylindrical surface of the rolling sleeve (602).

10. A method for refining crude phenol from coal gasification, characterized in that, Adopt a crude phenol refining system as described in claim 9, including the following steps: Step 1: Feed the crude phenol raw material into the conical reaction cylinder (206) from the feed pipe (205) of the wiped film device (2). Subsequently, the servo motor (210) in the wiped film base (201) drives the second gear (212) to rotate through the first gear (209). The second gear (212) drives the heat conduction sleeve (217) to rotate, and the heat conduction sleeve (217) drives the four guide plates (216) and the wiping film (215) to rotate synchronously. The guide plates (216) drive the crude phenol raw material to be thrown out along the guide grooves on the guide plates (216) to the outer surface of the wiping film (215) by centrifugal force, and the wiping film (215) smears the crude phenol raw material on the inner surface of the conical reaction cylinder (206). Step 2: The first power supply (211) passes an electric current through the first heating resistor (214), and the first heating resistor (214) heats the crude phenol raw material in the conical reaction cylinder (206), so that the phenolic components in the crude phenol raw material are heated and converted into a gas phase. The gaseous phenolic components enter the condensation device (5) at the lower end of the distillation device (3) from the upper end of the conical reaction cylinder (206). Step 3: After the gaseous phenolic components are cooled by the condensation device (5), they are then transported to the distillation outer shell (303) of the distillation device (3) by the condensate pump (503) in the condensation device (5). At the same time, the second power supply (401) on the light removal device (4) energizes the second heating resistor (306), so that the second heating resistor (306) heats the phenolic components in the distillation outer shell (303) to separate the crude xylenol from the phenolic components lighter than the crude xylenol. At this time, the crude xylenol remains at the bottom of the distillation outer shell (303), and the phenolic components lighter than the crude xylenol enter the condensation device (5) at the upper end of the distillation device (3). Step 4: After the phenolic components lighter than the crude xylenol are cooled by the condensation device (5), they are then transported to the light removal outer shell (402) of the light removal device (4) by the condensate pump (503). Subsequently, the second power supply (401) energizes the fourth heating resistor (405), so that the fourth heating resistor (405) heats the phenolic components in the light removal outer shell (402) to separate the phenolic components not less than the boiling point of phenol from the fractions less than the boiling point of phenol. The phenolic components not less than the boiling point of phenol enter the annular pipe (203) through the pipe at the bottom of the light removal outer shell (402) and the third liquid pump (208), while the fractions less than the boiling point of phenol are discharged from the side of the discharge cylinder (404). Step 5: Subsequently, the circulating pump (605) in the rolling assembly (6) transports the phenolic components not less than the boiling point of phenol to the three rectifying cylinders (301) on the right side of the axis of the distillation outer shell (303). The third heating resistor (309) in the self-cleaning assembly (302) heats the phenolic components not less than the boiling point of phenol, so that phenol distills out from the upper end of the self-cleaning top cover (307), and the mixed phenol at the bottom will enter the three rectifying cylinders (301) on the left side of the axis of the distillation outer shell (303) through the circulating pump (605) and the annular pipe (203). Step Six: Subsequently, the second liquid pump (207) sucks out the inorganic strong acid in the storage tank (204) and transports it into the three rectification cylinders (301) on the left side of the axis of the distillation outer shell (303). In the rectification cylinders (301), the inorganic strong acid reacts with the mixed phenol for decolorization. Subsequently, the decolorized mixed phenol enters the three rectification cylinders (301) on the right side of the axis of the distillation outer shell (303) through the circulation pump (605) and the annular pipeline (203). The third heating resistor (309) heats the decolorized mixed phenol, causing the water and fractions lighter than o-cresol to be discharged from the upper end of the self-cleaning top cover (307). The dehydrated mixed phenol enters the three rectification cylinders (301) on the left side of the axis of the distillation outer shell (303) through the circulation pump (605) and the annular pipeline (203). Step Seven: The third heating resistor (309) heats the dehydrated mixed phenol, causing o-cresol to distill out from the upper end of the self-cleaning top cover (307). The crude m-p-cresol at the bottom enters the three rectification cylinders (301) on the right side of the axis of the distillation outer shell (303) through the circulation pump (605) and the annular pipeline (203). Subsequently, the third heating resistor (309) heats the crude m-p-cresol, causing m-p-cresol to distill out from the upper end of the self-cleaning top cover (307). The crude xylenol at the bottom of the rectification cylinder (301) is retained. Subsequently, the first liquid pump (202) transports the crude xylenol at the bottom of the distillation outer shell (303) into the six rectification cylinders (301) respectively, and then the third heating resistor (309) heats the crude xylenol, causing xylenol to distill out from the upper end of the self-cleaning top cover (307). The higher-grade phenol at the bottom of the rectification cylinder (301) is retained. Step Eight: While Steps Three and Four are being carried out, the heating rod (506) in the condensation device (5) heats the air in the transformation chamber (511) through the waste heat of the second heating resistor (306) and the fourth heating resistor (405). Subsequently, the high-temperature and high-pressure gas in the spring (507) and the transformation chamber (511) drives the double-leaf valve (508) to close the inlets of the second condensation chamber (505) and the fourth condensation chamber (510). Subsequently, the gas enters the first air inlet chamber (512) and the second air inlet chamber (514) simultaneously. At this time, the gas preferentially enters the first condensation chamber (504) and the third condensation chamber (509). When the gas pressure in the first air inlet chamber (512) is greater than the pressure in the transformation chamber (511), the pressure drives the double-leaf valve (508) to open the inlets of the second condensation chamber (505) and the fourth condensation chamber (510) to achieve the alternate cooling function. Step Nine: While Step One is being carried out, the heat-conducting sleeve (217) drives the distillation outer shell (303), the condensation housing (501), and the light-component removal outer shell (402) to rotate together through the feed pipe (205). Subsequently, the distillation outer shell (303) drives the switching assembly (601) and the annular pipeline (203) to rotate on the upper end of the scraping film base (201). The switching assembly (601) drives the friction rollers (604) on the rolling sleeve (602) to revolve around the periphery of the conical reaction cylinder (206). At the same time, the frictional force also drives the rolling sleeve (602) to roll on the periphery of the conical reaction cylinder (206). At this time, the inner cylindrical surface of the rolling sleeve (602) drives the switching disk (606) at the lower end of the switching column (609) to rotate. The switching disk (606) realizes the reciprocating up-and-down movement of the clamping strip (603) through the intermittent contact between the switching protrusion (607) and the clamping strip (603). At this time, the clamping strip (603) intermittently contacts the clamping ring (304), causing the rectifying cylinder (301) to rotate intermittently to achieve the auxiliary centrifugal rotation function.

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