Coal gasification crude phenol refining system and method

Abstract

The invention discloses a coal gasification crude phenol refining system and method, and relates to the technical field of crude phenol refining, the coal gasification crude phenol refining system comprises a support shell, a film scraping device, a distillation device, a light component removal device, a condensing device and a rolling assembly. A heating rod in the condensing device heats air in a conversion cabin through waste heat, then a spring and high-pressure gas drive a double-blade valve to close a second condensation cavity and a fourth condensation cavity, the gas enters a first condensation cavity and a third condensation cavity, and when the pressure intensity at the inlet of the second condensation cavity and the pressure intensity at the inlet of the fourth condensation cavity are larger than the pressure intensity of the conversion cabin, the gas enters the second condensation cavity and the third condensation cavity. And the second condensation cavity and the fourth condensation cavity can be opened by the double-blade valve, so that the alternate cooling function is realized. The rolling assembly drives a friction roller on a rolling sleeve to rotate on the periphery of the conical reaction cylinder through the distillation device, meanwhile, the inner cylindrical surface of the rolling sleeve drives a switching rotary column on a switching chassis to rotate, and the switching rotary column is intermittently inserted into a clamping ring through a switching disc and a switching convex block clamping strip, so that intermittent rotation of the rectification cylinder is realized.

Description

Technical Field

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

[0002] In the process of coal reacting with gasification agent to generate synthesis gas under high temperature and pressure, a certain amount of phenolic compound mixture will be produced. This phenolic compound mixture is called coal gasification crude phenol. The main components of coal gasification crude phenol include phenol, cresol, xylenol, etc.; however, this coal gasification crude phenol cannot be directly used in other industries. It is necessary to refine the coal gasification crude phenol through distillation and separation first, so as to purify and separate each phenolic compound separately, so that the phenolic compound purity becomes high and does not contain other harmful impurities, so that it can be used as an important raw material for engineering plastics, medicines and disinfectants.

[0003] In the process of refining crude phenol by coal gasification, the existing equipment for refining crude phenol by coal gasification often adopts the design that each distillation tank and the reaction tank are separated from each other, which makes the total volume of the entire equipment for refining crude phenol by coal gasification too large and too long, and the transportation and transfer time during the refining process is also very long, so that the efficiency of the refining process cannot be further improved; at the same time, when the existing equipment condenses the components in the upper part of the distillation tower, it is unable to automatically adjust the condensation method strategy according to the temperature and pressure of the gas, so that the condensation process consumes too much time or energy. Therefore, there is a need for a system and method for refining crude phenol by coal gasification that can reduce the overall volume of the equipment and can automatically adjust the condensation time and method according to the temperature and pressure of the gas, so as to solve the shortcomings of the existing system for refining crude phenol by coal gasification.

[0004] For example, the patent with announcement 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 tower, and a product tank; the tail gas reflux pipe can transport a portion of the hot gas to the light removal tower, thereby realizing an increase in heat recovery. The design of this application is reasonable, and the heat in the hot gas can be further recycled and utilized; however, the structure of this scheme is dispersed, and the reaction towers are only linearly connected in series, resulting in the total volume of the system being too large and too long, thereby failing to reduce the total area occupied by the site, and at the same time, this also causes a lot of time to be wasted in the transfer and transportation process of the mixed phenol, and it is impossible to improve the efficiency of the refining process; the system structure of this scheme is loose, resulting in the inability to effectively link the various devices, and therefore, this scheme cannot achieve the simultaneous improvement of the distillation efficiency of multiple distillation towers through the linkage between the various devices; at the same time, this scheme cannot automatically adjust the condensation method strategy according to the temperature and pressure of the gas phase, thereby saving the time or energy consumed in 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 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 distillation efficiency in all distillation towers, and how to automatically adjust 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: a coal gasification crude phenol refining system, including a supporting shell, a scraping device, a distillation device, a light removal device, a condensing device, and a rolling assembly; the supporting shell is fixedly installed on the periphery of the scraping device; two condensing devices are fixedly installed on the upper and lower ends of the distillation device respectively; the condensing device at the lower end of the distillation device is rotatably connected to the upper end of the scraping device; the condensing device at the upper end of the distillation device is also fixedly connected to the lower end of the light removal device; the scraping device is provided with a scraping base and an annular pipe; the outer cylindrical surface of the scraping base is fixedly connected to the inner cylindrical surface of the supporting shell; the annular pipe is rotatably connected to the upper end of the scraping base along the circumferential direction of the scraping base; the rolling assembly is provided with a switching assembly, a rolling sleeve, a positioning strip, a circulating pump, a switching disk, and a switching protrusion; the switching assembly is rotatably connected to the lower end of the distillation device; the circulating pump is fixedly installed on the switching The lower end of the component; the circulating pump is also fixedly installed on the upper end of the annular pipe; the rolling sleeve is rotatably connected to the periphery of the switching component; the positioning 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 on the lower end of the switching component; the switching protrusion is fixedly installed on the upper end of the switching disk; when the scraping device drives the distillation device, the distillation device will drive the switching component and the annular pipe to rotate at the upper end of the scraping base, and the switching component drives the rolling sleeve to revolve around the periphery of the scraping device. At the same time, the friction between the rolling sleeve and the periphery of the scraping device will drive the rolling sleeve to roll on the periphery of the scraping device, thereby realizing 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 component to rotate, and the switching disk realizes the up and down reciprocating motion of the positioning strip through the intermittent contact between the switching protrusion and the positioning strip.

[0007] Furthermore, the film scraping device also 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 slow flow baffle, a first heating resistor, a film scraping sheet, a guide plate, and a heat-conducting sleeve; the first liquid pump is fixedly mounted on the upper end of the annular pipe; the storage tank is fixedly mounted on the upper end of the second liquid pump; the upper end of the second liquid pump is fixedly mounted on the upper end of the annular pipe; the feed pipe is fixedly mounted on the upper end of the heat-conducting sleeve; the conical reaction cylinder is fixedly mounted on the upper end of the film scraping base; the third liquid pump is fixedly mounted on the upper end of the annular pipe; the first gear is fixedly mounted on the output end of the servo motor; the servo motor is vertically It is fixedly installed inside the scraper base; 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 scraper base; three slow-flow baffles are distributed on the periphery of the heat-conducting sleeve along the axial 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 rotatably connected to the inner cylindrical surface of the heat-conducting sleeve; four guide plates are distributed on the periphery of the heat-conducting sleeve along the axial direction of the heat-conducting sleeve; the guide plates are also provided with guide grooves in the radial direction; the scraper is fixedly installed on the periphery of the guide plate; the outer surface of the scraper is also in frictional contact with the inner surface of the conical reaction tube.

[0008] Furthermore, the distillation device includes a distillation cylinder, a self-cleaning component, a distillation shell, a positioning ring, a distillation protrusion, and a second heating resistor; the six distillation cylinders are respectively rotatably connected to the lower ends of the six self-cleaning components; the six distillation cylinders are also rotatably connected to the upper ends of the six switching components; the six self-cleaning components are evenly distributed on the periphery of the distillation shell in the circumferential direction; the distillation shell is rotatably connected to the upper end of the conical reaction cylinder; the bottom of the distillation shell is connected to the first liquid pump through a pipeline; the positioning ring is fixedly installed on the periphery of the distillation cylinder; the distillation protrusion is fixedly installed inside the distillation shell; the second heating resistor is fixedly installed inside the distillation shell; the second heating resistor is also fixedly connected to the side of the de-lightening device.

[0009] Furthermore, 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 disk; the self-cleaning top cover is fixedly installed on the periphery of the distillation shell; the self-cleaning top cover is used for product discharge and heat dissipation; the third heating resistor is fixedly installed on 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 on the periphery of the third heating resistor along the axial direction of the third heating resistor; the linear motor is slidably installed on the magnetic slide rail along the axial direction of the third heating resistor; the cleaning flexible disk is fixedly installed on the periphery of the linear motor; the outer cylindrical surface of the linear motor is in friction contact with the inner cylindrical surface of the distillation tube.

[0010] Furthermore, the de-lightening device includes a second power supply, a de-lightening shell, a de-lightening protrusion, a discharge barrel, and a fourth heating resistor; the second power supply is fixedly mounted 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 de-lightening shell is fixedly mounted on the upper end of the distillation shell; the bottom of the de-lightening shell is connected to the third liquid pump through a pipeline; the de-lightening protrusion is fixedly mounted on the inner surface of the de-lightening shell; the discharge barrel is fixedly mounted on the upper end of the de-lightening shell; the discharge barrel is also fixedly mounted on the periphery of the feed pipe; the fourth heating resistor is fixedly mounted inside the de-lightening shell.

[0011] Furthermore, the condensing device includes a condensing shell, a thermal energy joint, and a condensing pump; the condensing shells of the two condensing devices are distributed and fixedly installed on the upper and lower ends of the distillation shell; the condensing shell at the lower end of the distillation shell is rotatably connected to the upper end of the conical reaction cylinder; the condensing shell at the upper end of the distillation shell is fixedly installed on the lower end of the delightening shell; the condensing shells of the two condensing devices are fixedly installed on the periphery of the feed pipe; the thermal energy joint is fixedly installed on the upper end of the condensing shell; the thermal energy joint is also fixedly connected to the second heating resistor and the fourth heating resistor respectively; the condensing pump is fixedly installed on the upper end of the condensing shell.

[0012] Furthermore, the condensing device also includes a first condensing chamber, a second condensing chamber, a heating rod, a spring, a double-leaf valve, a third condensing chamber, a fourth condensing chamber, a conversion chamber, a first air inlet chamber, a condensing fixing plate, and a second air inlet chamber; the first condensing chamber is fixedly installed inside the condensing shell; the second condensing chamber is fixedly installed inside the condensing shell; a cooling tank is arranged inside the second condensing chamber; cooling oil is stored in the cooling tank in the second condensing chamber; the third condensing chamber is fixedly installed inside the condensing shell; the fourth condensing chamber is fixedly installed inside the condensing shell; a cooling tank is arranged inside the fourth condensing chamber; cooling oil is stored in the cooling tank in the fourth condensing chamber; the double-leaf valve is rotatably connected to the condensing shell The interior of the body; the condensation fixing plate is fixedly installed inside the condensation shell; 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 entrance of the second condensation chamber and the entrance of the fourth condensation chamber; the obtuse angle area sandwiched by the condensation fixing plate and the double-leaf valve is the conversion chamber; the heating rod is fixedly installed inside the conversion chamber; the upper end of the heating rod is fixedly connected to the lower end of the thermal energy joint; the lower end of the heating rod is respectively in contact with the upper end of the conical reaction cylinder and the upper end of the distillation shell; the chambers at the entrance of the second condensation chamber and the entrance of the fourth condensation chamber are the first air inlet chamber; the chambers at the entrance of the first condensation chamber and the entrance of the third condensation chamber are the second air inlet chamber.

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

[0014] Furthermore, the switching assembly includes a switching chassis and a switching column; the outer cylindrical surface of the switching chassis is rotatably connected to the inner cylindrical surface of the distillation barrel; the switching chassis is fixedly installed on the upper end of the circulating pump; the outer cylindrical surface of the switching chassis is also rotatably connected to the inner cylindrical surface of the rolling sleeve; the switching 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 column is also in frictional contact with the inner cylindrical surface of the rolling sleeve.

[0015] A method for refining crude phenol by coal gasification, such as the above-mentioned system for refining crude phenol by coal gasification, comprises the following steps: Step 1: feeding the crude phenol raw material into the conical reaction tube from the feeding pipe of the scraping device, and then the servo motor in the scraping base drives the second gear to rotate through the first gear, and the second gear drives the heat-conducting sleeve to rotate, and the heat-conducting sleeve drives four guide plates and the scraping film to rotate synchronously, and the guide plate drives the crude phenol raw material to be thrown out along the guide groove on the guide plate to the outer surface of the scraping film through the centrifugal force, and the scraping film scrapes the crude phenol raw material on the inner surface of the conical reaction tube; Step 2: The first power supply supplies current to the first heating resistor, and the first heating resistor heats the crude phenol raw material in the conical reaction tube, so that the phenol component in the crude phenol raw material is converted into a gas phase by heat, and the gas phase phenol component enters the condensing device at the lower end of the distillation device from the upper end of the conical reaction tube; Step 3: After the gaseous phenol component is cooled by the condensing device, it is transported to the distillation shell of the distillation device through the condensation pump in the condensing device, and at the same time, the second power supply on the light removal device is energized to the second heating resistor, so that the second heating resistor heats the phenol component in the distillation shell to separate the crude xylenol from the phenol component lighter than the crude xylenol. At this time, the crude xylenol is retained at the bottom of the distillation shell, and the phenol component lighter than the crude xylenol enters the condensing device at the upper end of the distillation device; Step 4: After the phenol components lighter than the crude xylenol are cooled by the condensing device, they are transported to the light removal shell of the light removal device through the condensing pump, and then the second power supply is energized to the fourth heating resistor, so that the fourth heating resistor heats the phenol components in the light removal shell, and separates the phenol components not less than the boiling point of phenol and the fractions less than the boiling point of phenol, and the phenol components not less than the boiling point of phenol enter the annular pipeline through the pipeline at the bottom of the light removal shell and the third liquid pump, and the fractions less than the boiling point of phenol are discharged from the side of the discharge barrel; Step 5: Then the circulating pump in the rolling assembly transports the phenol components with a boiling point not less than phenol to the three distillation cylinders on the right side of the axis of the distillation shell, and the third heating resistor in the self-cleaning assembly heats the phenol components with a boiling point not less than phenol, so that phenol is distilled out from the upper end of the self-cleaning top cover, and the mixed phenol at the bottom enters the three distillation cylinders on the left side of the axis of the distillation shell through the circulating pump and the annular pipeline; Step 6: Then the second liquid pump sucks out the inorganic strong acid in the storage tank and transports it to the three distillation cylinders on the left side of the axis of the distillation shell, in which the inorganic strong acid reacts with the mixed phenol for decolorization, and then the decolorized mixed phenol enters the three distillation cylinders on the right side of the axis of the distillation shell through the circulation pump and the annular pipeline, the third heating resistor heats the decolorized mixed phenol, so that water and fractions lighter than o-cresol are discharged from the upper end of the self-cleaning top cover, and the dehydrated mixed phenol enters the three distillation cylinders on the left side of the axis of the distillation shell through the circulation pump and the annular pipeline; Step 7: The third heating resistor heats the dehydrated mixed phenol, so that o-cresol is distilled out from the upper end of the self-cleaning top cover, and the crude m-cresol at the bottom enters the three distillation cylinders on the right side of the axis of the distillation shell through the circulation pump and the annular pipe, and then the third heating resistor heats the crude m-cresol, so that m-cresol is distilled out from the upper end of the self-cleaning top cover, and the crude xylenol at the bottom of the distillation cylinder is retained, and then the first liquid pump transports the crude xylenol at the bottom of the distillation shell to the six distillation cylinders respectively, and then the crude xylenol is heated by the third heating resistor, so that xylenol is distilled out from the upper end of the self-cleaning top cover, and the higher phenol at the bottom of the distillation cylinder is retained; Step 8: While steps 3 and 4 are being performed, the heating rod in the condensing device will heat the air in the conversion chamber through the waste heat of the second heating resistor and the fourth heating resistor, and then the double-leaf valve will be driven by the spring and the high-temperature and high-pressure gas in the conversion chamber to close the entrances of the second condensing chamber and the fourth condensing chamber, and then the gas will enter the first air inlet chamber and the second air inlet chamber at the same time. At this time, the gas will preferentially enter the first condensing chamber and the third condensing chamber. When the gas pressure in the first air inlet chamber is greater than the pressure in the conversion chamber, the pressure will drive the double-leaf valve to open the entrances of the second condensing chamber and the fourth condensing chamber to achieve the rotation cooling function; Step nine: While step one is being carried out, the heat-conducting sleeve drives the distillation shell, the condensation shell and the light-removal shell to rotate together through the feed pipe, and then the distillation shell drives the switching component and the annular pipe to rotate at the upper end of the scraper base, and the switching component drives the friction roller on the rolling sleeve to revolve around the periphery of the conical reaction tube. At the same time, the friction force will also drive the rolling sleeve to roll on the periphery of the conical reaction tube. At this time, the inner cylindrical surface of the rolling sleeve will drive the switching disk at the lower end of the switching column to rotate. The switching disk realizes the up and down reciprocating motion of the locking bar by intermittent contact between the switching protrusion and the locking bar. At this time, the locking bar will intermittently contact with the locking ring, causing the distillation tube to intermittently rotate, thereby realizing the auxiliary centrifugal rotation function.

[0016] Compared with the prior art, the present invention has the following beneficial effects: (1) The heating rod in the condensing device heats the air in the conversion chamber by waste heat, and then the spring and high-pressure gas drive the double-leaf valve to close the second condensing chamber and the fourth condensing chamber, and the gas will enter the first condensing chamber and the third condensing chamber. When the pressure at the entrance of the second condensing chamber and the fourth condensing chamber is greater than the pressure of the conversion chamber, the double-leaf valve will open the second condensing chamber and the fourth condensing chamber to realize the rotation cooling function. (2) The rolling assembly drives the friction roller on the rolling sleeve to rotate around the periphery of the conical reaction cylinder through the distillation device, and 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 locking ring through the switching disk and the switching protrusion locking strip to realize the intermittent rotation of the distillation cylinder. (3) The mixed phenol is rotated in and out of the six distillation cylinders, and the linear motor in the self-cleaning assembly drives the cleaning flexible disk to slide back and forth on the inner wall of the distillation cylinder to realize the reciprocating operation of the rotation distillation function and the self-cleaning function, while also reducing the total area occupied by the equipment. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 The schematic diagram of the overall assembly structure of the working state of the embodiment of the present invention is as follows Figure 1 .

[0018] Figure 2 The schematic diagram of the overall assembly structure of the working state of the embodiment of the present invention is as follows Figure 2 .

[0019] Figure 3 The structure of the film scraping device of the present invention is shown in FIG. Figure 1 .

[0020] Figure 4 The structure of the film scraping device of the present invention is shown in FIG. Figure 2 .

[0021] Figure 5 The structure of the distillation device of the present invention is shown in FIG. Figure 1 .

[0022] Figure 6 The structure of the distillation device of the present invention is shown in FIG. Figure 2 .

[0023] Figure 7 It is a structural schematic diagram of the self-cleaning component of the present invention.

[0024] Figure 8 It is a schematic structural diagram of the lightness removal device of the present invention.

[0025] Fig. 9 The structure of the condensing device of the present invention is shown in FIG. Figure 1 .

[0026] Fig.10 The structure of the condensing device of the present invention is shown in FIG. Figure 2 .

[0027] Fig.11 It is a schematic structural diagram of the rolling assembly of the present invention.

[0028] Fig.12 It is a structural schematic diagram of the switching component of the present invention.

[0029] In the figure: 1-support shell; 2-scraping device; 3-distillation device; 4-de-lightening device; 5-condensing device; 6-rolling assembly; 201-scraping base; 202-first liquid pump; 203-annular pipeline; 204-storage tank; 205-feeding 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-slow flow baffle; 214-first heating resistor; 215-scraping sheet; 216-guide plate; 217-heat-conducting sleeve; 301-rectification cylinder; 302-self-cleaning assembly; 303-distillation shell; 304-positioning 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-lightening shell; 403-lightening bump; 404-discharging barrel; 405-fourth heating resistor; 501-condensing shell; 502-thermal joint; 503-condensing pump; 504-first condensing chamber; 505-second condensing chamber; 506-heating rod; 507-spring; 508-double-leaf valve; 509-third condensing chamber; 510-fourth condensing chamber; 511-conversion cabin; 512-first air inlet cabin; 513-condensing fixing plate; 514-second air inlet cabin; 601-switching assembly; 602-rolling sleeve; 603-positioning strip; 604-friction roller; 605-circulating pump; 606-switching disk; 607-switching bump; 608-switching chassis; 609-switching column. DETAILED DESCRIPTION

[0030] The technical solution of the present invention is further described below with reference to the accompanying drawings and through specific implementation methods.

[0031] Among them, the drawings are only used for illustrative explanations, and they only represent schematic diagrams rather than actual pictures, and should not be understood as limitations on the present invention. In order to better illustrate the embodiments of the present invention, some parts of the drawings may be omitted, enlarged or reduced, and do not represent the size of actual products. For those skilled in the art, it is understandable that some well-known structures and their descriptions in the drawings may be omitted.

[0032] Figures 1 to 12 It is a preferred embodiment of the present invention.

[0033] like Figure 1 and 2 As shown, the support shell 1 is fixedly installed on the periphery of the scraping device 2; two condensing devices 5 are fixedly installed on the upper and lower ends of the distillation device 3 respectively; the condensing device 5 at the lower end of the distillation device 3 is rotatably connected to the upper end of the scraping 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 de-lightening device 4; the scraping device 2 is provided with a scraping base 201 and an annular pipe 203; the outer cylindrical surface of the scraping base 201 is fixedly connected to the inner cylindrical surface of the support shell 1; the annular pipe 203 The scraper base 201 is rotatably connected to the upper end of the scraper base 201 along the circumferential direction of the scraper base 201; the rolling assembly 6 is provided with a switching assembly 601, a rolling sleeve 602, a positioning strip 603, a circulating pump 605, a switching disk 606, and a switching protrusion 607; the switching assembly 601 is rotatably connected to the lower end of the distillation device 3; the circulating pump 605 is fixedly installed at the lower end of the switching assembly 601; the circulating pump 605 is also fixedly installed at the upper end of the annular pipe 203; the rolling sleeve 602 is rotatably connected to the switching assembly The outer periphery of the component 601; the positioning strip 603 is slidably mounted 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 mounted on the lower end of the switching component 601; the switching protrusion 607 is fixedly mounted on the upper end of the switching disk 606; when the scraping device 2 drives the distillation device 3, the distillation device 3 will drive the switching component 601 and the annular pipeline 203 to rotate at the upper end of the scraping base 201, and the switching component 601 drives the rolling sleeve 602 It revolves around the periphery of the scraping device 2, and at the same time, the friction between the rolling sleeve 602 and the periphery of the scraping device 2 will drive the rolling sleeve 602 to roll around the periphery of the scraping device 2, thereby realizing 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 component 601 to rotate, and the switching disk 606 realizes the up and down reciprocating motion of the locking bar 603 through the intermittent contact between the switching protrusion 607 and the locking bar 603.

[0034] like Figure 3 and Figure 4As shown, in the film scraping device 2, the first liquid pump 202 is fixedly mounted on the upper end of the annular pipe 203; the storage tank 204 is fixedly mounted on the upper end of the second liquid pump 207; the upper end of the second liquid pump 207 is fixedly mounted on the upper end of the annular pipe 203; the feed pipe 205 is fixedly mounted on the upper end of the heat-conducting sleeve 217; the conical reaction cylinder 206 is fixedly mounted on the upper end of the film scraping base 201; the third liquid pump 208 is fixedly mounted on the upper end of the annular pipe 203; the first gear 209 is fixedly mounted on the output end of the servo motor 210; the servo motor 210 is fixedly mounted inside the film scraping base 201 in the vertical direction; the second gear 212 is fixedly mounted on the lower end of the heat-conducting sleeve 217; the second gear 212 is also fixedly mounted on the output end of the servo motor 210; the servo motor 210 is fixedly mounted on the inside of ... The first gear 209 constitutes a gear pair; the first power supply 211 is fixedly installed inside the scraper base 201; three slow-flow baffles 213 are distributed on the periphery of the heat-conducting sleeve 217 along the axial direction of the heat-conducting sleeve 217; the first heating resistor 214 is fixedly installed on the upper end of the first power supply 211; the outer cylindrical surface of the first heating resistor 214 is also rotatably connected to the inner cylindrical surface of the heat-conducting sleeve 217; four guide plates 216 are distributed on the periphery of the heat-conducting sleeve 217 along the axial direction of the heat-conducting sleeve 217; the guide plates 216 are also provided with guide grooves in the radial direction; the scraper 215 is fixedly installed on the periphery of the guide plate 216; the outer surface of the scraper 215 is also in frictional contact with the inner surface of the conical reaction tube 206.

[0035] like Figure 5 and Figure 6 As shown, in the distillation device 3, the six distillation cylinders 301 are respectively rotatably connected to the lower ends of the six self-cleaning components 302; the six distillation cylinders 301 are also rotatably connected to the upper ends of the six switching components 601; the six self-cleaning components 302 are evenly distributed on the periphery of the distillation shell 303 along the circumferential direction; the distillation shell 303 is rotatably connected to the upper end of the conical reaction cylinder 206; the bottom of the distillation shell 303 is connected to the first liquid pump 202 through a pipeline; the positioning ring 304 is fixedly installed on the periphery of the distillation cylinder 301; the distillation protrusion 305 is fixedly installed inside the distillation shell 303; the second heating resistor 306 is fixedly installed inside the distillation shell 303; the second heating resistor 306 is also fixedly connected to the side of the de-lightening device 4.

[0036] like Figure 7As shown, in the self-cleaning component 302, the self-cleaning top cover 307 is fixedly installed on the periphery of the distillation shell 303; the self-cleaning top cover 307 is used for product discharge and heat dissipation; 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 disk 311 is fixedly installed on the periphery of the linear motor 310; the outer cylindrical surface of the linear motor 310 is in friction contact with the inner cylindrical surface of the distillation tube 301.

[0037] like Figure 8 As shown, in the de-lightening 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 de-lightening shell 402 is fixedly installed on the upper end of the distillation shell 303; the bottom of the de-lightening shell 402 is connected with the third liquid pump 208 through a pipeline; the de-lightening protrusion 403 is fixedly installed on the inner surface of the de-lightening shell 402; the discharge cylinder 404 is fixedly installed on the upper end of the de-lightening shell 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 de-lightening shell 402.

[0038] like Fig. 9 and Fig.10As shown, in the condensing device 5, the condensing shells 501 of the two condensing devices 5 are fixedly installed at the upper and lower ends of the distillation shell 303; the condensing shell 501 at the lower end of the distillation shell 303 is rotatably connected to the upper end of the conical reaction cylinder 206; the condensing shell 501 at the upper end of the distillation shell 303 is fixedly installed at the lower end of the light removal shell 402; the condensing shells 501 of the two condensing devices 5 are fixedly installed on the periphery of the feed pipe 205; the thermal energy joint 502 is fixedly installed at the upper end of the condensing shell 501; the thermal energy joint 502 is also respectively The second heating resistor 306 and the fourth heating resistor 405 are fixedly connected; 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 to the inside of the condensation shell 501; the condensation fixing plate 513 is fixedly installed inside the condensation shell 501; the two ends of the spring 507 are respectively fixedly installed on the side of the condensation fixing plate 513 and the side of the double-leaf valve 508; the spring 507 will drive the double-leaf valve 508 to close the entrance of the second condensation chamber 505 and the entrance of the fourth condensation chamber 510; the condensation fixing plate 513 The obtuse-angled area sandwiched by the double-leaf valve 508 is the conversion chamber 511; the heating rod 506 is fixedly installed inside the conversion chamber 511; the upper end of the heating rod 506 is fixedly connected to the lower end of the thermal energy joint 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 shell 303 respectively; the chambers at the entrance of the second condensation chamber 505 and the entrance of the fourth condensation chamber 510 are the first air inlet chamber 512; the chambers at the entrance of the first condensation chamber 504 and the entrance of the third condensation chamber 509 are the second air inlet chamber 514.

[0039] like Fig.11 As 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 rectification cylinder 301 ; the friction roller 604 is fixedly mounted on the periphery of the rolling sleeve 602 .

[0040] like Fig.12As shown, in the switching assembly 601, the outer cylindrical surface of the switching chassis 608 is rotatably connected to the inner cylindrical surface of the distillation tube 301; the switching chassis 608 is fixedly installed on the upper end of the circulating 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 axial 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.

[0041] The operating conditions of this system are as follows: The operating conditions of the scraping device 2 are as follows: 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; The operating conditions of the distillation shell 303 of the distillation device 3 are as follows: 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; The operating pressure at the top of the light removal shell 402 of the light removal unit 4 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; During the phenol distillation process, the operating conditions of the distillation cylinder 301 are as follows: 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; During the decolorization reaction, the operating conditions of the distillation cylinder 301 are an operating pressure of 10.0 to 15.0 KPa (A) and an operating temperature of 50 to 70°C; During the dehydration process, the top operating pressure of the distillation 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; During the distillation of o-cresol, the operating conditions of the distillation cylinder 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 115.0-125.0°C, and the bottom temperature is 145.0-155.0°C; In the process of distilling m-cresol, the operating conditions of the distillation cylinder 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; During the distillation of xylenol, the operating conditions of the distillation cylinder 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.

[0042] The present invention adopts inorganic strong acid as decolorizing agent in the decolorizing reaction process, such as 60.0-98.0% sulfuric acid, hydrochloric acid, phosphoric acid, and the added amount is 0.5-6.0% of the crude phenol raw material.

[0043] The main equipment and process pipelines of the present invention are made of stainless steel, such as 06Cr19Ni10 and 022Cr17Ni12Mo2.

[0044] For the crude phenol raw material liquid recovered from the phenol-containing wastewater of long flame coal gasification of a certain company (crude phenol amount 3000kg / h, components of water 0.27%, phenol 36.80%, o-cresol 6.86%, m-cresol 20.87%, xylenol 3.65%, heavy components and others 31.55%), the crude phenol raw material is first poured into the scraping device 2. At this time, the operating conditions of the scraping device 2 are as follows: the top operating pressure is 12.0KPa (A), the top outflow gas phase outlet temperature is 163℃, and the bottom liquid phase outlet temperature is 182℃; the top gas phase component is condensed by the condensing device 5 and enters the distillation shell 303 of the distillation device 3. The operating conditions of the distillation shell 303 are as follows: the top operating pressure is 12.0KPa (A), the top outflow gas phase outlet temperature is 163℃, and the bottom liquid phase outlet temperature is 182℃; the top gas phase component is condensed by the condensing device 5 and enters the distillation shell 303 of the distillation device 3. The operating conditions of the distillation shell 303 are as follows: the top operating pressure is 12.0KPa (A). a (A), the reflux ratio is 3 / 1, the top temperature is 119°C, and the bottom temperature is 165°C; then the crude xylenol is retained at the bottom of the distillation shell 303, and the phenol components lighter than the crude xylenol are condensed by the condensing device 5 and enter the light removal shell 402 of the light removal device 4. The operating conditions of the light removal shell 402 are as follows: the top operating pressure is 12.0 KPa, the reflux ratio is full reflux, intermittent extraction, the top temperature is 100°C, and the bottom temperature is 135°C; the phenol components in the bottom of the light removal shell 402 that are not less than the boiling point of phenol are rotated and distilled in the three distillation cylinders 301 on the right side of the axis of the distillation shell 303, and in the three distillation cylinders 301 on the right and left sides of the axis of the distillation shell 303, respectively. The crude xylenol in the distillation cylinder 301 and the crude xylenol at the bottom of the distillation shell 303 enter the six distillation cylinders 301 for distillation; in the phenol distillation process, the operating conditions of the distillation cylinder 301 are as follows: the top operating pressure is 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; in the decolorization reaction process, the mixed phenol in the distillation cylinder 301 is mixed with 90% sulfuric acid, and the operating conditions of the distillation cylinder 301 are as follows: the operating pressure is 10.0 KPa (A) and the operating temperature is 70°C; in the dehydration process, the top operating pressure of the distillation cylinder 301 is 10.0 KPa (A), the reflux ratio is 2 / 1, The top temperature is 105℃, and the bottom temperature is 145℃; in the process of ortho-cresol distillation, the operating conditions of the distillation cylinder 301 are as follows: the top operating pressure is 10.0KPa (A), the reflux ratio is 9 / 1, the top temperature is 118℃, and the bottom temperature is 149.0℃; in the process of meta-cresol distillation, the operating conditions of the distillation cylinder 301 are as follows: the top operating pressure is 10.0KPa (A), the reflux ratio is 8 / 1, the top temperature is 134.0℃, and the bottom temperature is 158.0℃; in the process of xylenol distillation, the operating conditions of the distillation cylinder 301 are as follows: the top operating pressure is 10.0KPa (A), the reflux ratio is 6 / 1, the top temperature is 140.0℃, and the bottom temperature is 165.0℃. The technical indicators of the obtained products are: phenol (product purity is 99.6wt%), ortho-cresol (product purity is 99.0wt%), and meta-cresol (product purity is 96.0wt%).

[0045] Working principle of the present invention: Figure 1 and Figure 2 The usage and corresponding scenarios of the present invention are given. The posture control of the crude phenol refining process by coal gasification is determined by the scraping device 2, the distillation device 3, the condensing device 5 and the rolling assembly 6. The postures of the condensing device 5 and the rolling assembly 6 are determined by the distillation device 3. The posture of the distillation device 3 is determined by the scraping device 2. The scraping device 2 is the core of the crude phenol refining process by coal gasification.

[0046] Taking the preferred embodiment as an example, the crude phenol raw material is fed into the conical reaction tube 206 from the feed pipe 205 of the scraping device 2, and then the servo motor 210 in the scraping base 201 drives the second gear 212 to rotate through the first gear 209, and the second gear 212 drives the heat-conducting sleeve 217 to rotate, and the heat-conducting sleeve 217 drives the four guide plates 216 and the scraping sheet 215 to rotate synchronously, and the guide plate 216 drives the crude phenol raw material along the guide groove on the guide plate 216 through centrifugal force to be thrown to the outer surface of the scraping sheet 215, and the scraping sheet 215 scrapes the crude phenol raw material on the inner surface of the conical reaction tube 206; then the first power supply 211 is driven to Current is passed through the first heating resistor 214, and the first heating resistor 214 heats the crude phenol raw material in the conical reaction tube 206, so that the phenol component in the crude phenol raw material is converted into a gas phase by heat, and the gaseous phenol component enters the condensing device 5 at the lower end of the distillation device 3 from the upper end of the conical reaction tube 206; after the gaseous phenol component is cooled by the condensing device 5, it is transported to the distillation shell 303 of the distillation device 3 through the condensation pump 503 in the condensing device 5, and at the same time, the second power supply 401 on the de-lightening device 4 is energized to the second heating resistor 306, so that the second heating resistor 306 heats the phenol component in the distillation shell 303. , separating the crude xylenol from the phenol components lighter than the crude xylenol, at which time the crude xylenol is retained at the bottom of the distillation shell 303, and the phenol components lighter than the crude xylenol enter the condensing device 5 at the upper end of the distillation device 3; after the phenol components lighter than the crude xylenol are cooled by the condensing device 5, they are transported to the light removal shell 402 of the light removal device 4 through the condensing pump 503, and then the second power supply 401 energizes the fourth heating resistor 405, so that the fourth heating resistor 405 heats the phenol components in the light removal shell 402, and separates the phenol components not less than the boiling point of phenol and the fraction less than the boiling point of phenol, and the phenol components not less than the boiling point of phenol are transported to the light removal shell 402 of the light removal device 4 through the degassing pump 503. The pipeline at the bottom of the light shell 402 and the third liquid pump 208 enter the annular pipeline 203, and the fraction with a boiling point lower than that of phenol will be discharged from the side of the discharge barrel 404; then the circulating pump 605 in the rolling assembly 6 transports the phenol components with a boiling point not lower than that of phenol to the three rectifying barrels 301 on the right side of the axis of the distillation shell 303, and the third heating resistor 309 in the self-cleaning assembly 302 heats the phenol components with a boiling point not lower than that of phenol, so that phenol is distilled from the upper end of the self-cleaning top cover 307, and the mixed phenol at the bottom enters the three rectifying barrels 301 on the left side of the axis of the distillation shell 303 through the circulating pump 605 and the annular pipeline 203;Then, the second liquid pump 207 sucks out the inorganic strong acid in the storage tank 204 and transports it to the three distillation cylinders 301 on the left side of the axis of the distillation shell 303. In the distillation cylinder 301, the inorganic strong acid reacts with the mixed phenol to decolorize. Then, the decolorized mixed phenol enters the three distillation cylinders 301 on the right side of the axis of the distillation shell 303 through the circulation pump 605 and the annular pipe 203. The third heating resistor 309 heats the decolorized mixed phenol, so that the water and the fraction lighter than o-cresol are discharged from the upper end of the self-cleaning top cover 307, and the dehydrated mixed phenol Phenol will enter the three distillation cylinders 301 on the left side of the axis of the distillation shell 303 through the circulation pump 605 and the annular pipe 203; then the third heating resistor 309 heats the dehydrated mixed phenol, so that o-cresol is distilled out from the upper end of the self-cleaning top cover 307, and the crude m-cresol at the bottom will enter the three distillation cylinders 301 on the right side of the axis of the distillation shell 303 through the circulation pump 605 and the annular pipe 203, then the third heating resistor 309 heats the crude m-cresol, so that m-cresol is distilled out from the upper end of the self-cleaning top cover 307, and the distillation cylinder The crude xylenol at the bottom of 301 will be retained, and then the first liquid pump 202 will transport the crude xylenol at the bottom of the distillation shell 303 to the six distillation cylinders 301 respectively, and then the crude xylenol is heated by the third heating resistor 309, so that the xylenol is distilled from the upper end of the self-cleaning top cover 307, and the high-grade phenol at the bottom of the distillation cylinder 301 will be retained; during the condensation process, the heating rod 506 in the condensing device 5 will heat the air in the conversion cabin 511 through the waste heat of the second heating resistor 306 and the fourth heating resistor 405, and then the spring 50 The high-temperature and high-pressure gas in the conversion chamber 511 drives the double-leaf valve 508 to close the entrances of the second condensing chamber 505 and the fourth condensing chamber 510, and then 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 will preferentially enter the first condensing chamber 504 and the third condensing 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 will drive the double-leaf valve 508 to open the entrances of the second condensing chamber 505 and the fourth condensing chamber 510 to realize the rotation cooling function;During the rotation of the heat-conducting sleeve 217, the heat-conducting sleeve 217 drives the distillation shell 303, the condensation shell 501 and the light-removal shell 402 to rotate together through the feed pipe 205, and then the distillation shell 303 drives the switching component 601 and the annular pipe 203 to rotate at the upper end of the scraping base 201, and the switching component 601 drives the friction roller 604 on the rolling sleeve 602 to revolve around the periphery of the conical reaction cylinder 206. At the same time, the friction 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 drive the switching disk 606 at the lower end of the switching rotating column 609 to rotate. The intermittent contact between the protrusion 607 and the positioning strip 603 realizes the up and down reciprocating motion of the positioning strip 603. At this time, the positioning strip 603 will intermittently contact the positioning ring 304, so that the distillation cylinder 301 intermittently rotates to realize the auxiliary centrifugal rotation function; the mixed phenol flows in and out of the six distillation cylinders 301 in rotation, and the linear motor 310 in the self-cleaning component 302 drives the cleaning flexible disk 311 to slide back and forth on the inner wall of the distillation cylinder 301, so as to realize the reciprocating operation of the rotating distillation function and the self-cleaning function. At the same time, the design of the six distillation cylinders 301 also reduces the total area occupied by the equipment; the support shell 1 is fixedly installed on the periphery of the scraping base 201. ;

[0047] Specifically, 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 tube 206 from the feed pipe 205, and then the servo motor 210 in the scraper base 201 drives the second gear 212 to rotate through the first gear 209, and the second gear 212 drives the heat-conducting sleeve 217 to rotate, and the heat-conducting sleeve 217 drives the four guide plates 216 and the scraper sheet 215 to rotate synchronously, and the guide plate 216 drives the crude phenol raw material to be thrown out along the guide groove on the guide plate 216 to the outer surface of the scraper sheet 215 through the centrifugal force, and the scraper sheet 215 scrapes the crude phenol raw material on the inner surface of the conical reaction tube 206; at the same time, the crude phenol raw material will also seep downward from the through hole of the guide plate 216, and when the crude phenol raw material falls to the slow-flow baffle 213, it will temporarily stop falling, and then slowly The centrifugal force generated by the rotation of the flow baffle 213 will throw the crude phenol raw material outward, and the thrown crude phenol raw material will continue to fall into the next guide plate 216, so as to prevent the crude phenol raw material from falling too fast and causing the crude phenol raw material to be deposited at the lower end of the conical reaction tube 206; then 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 on the inner surface of the conical reaction tube 206, so that the phenol component in the crude phenol raw material is converted into a gas phase by heat, and the gas phase phenol component enters the condensing device 5 at the lower end of the distillation shell 303 from the upper end of the conical reaction tube 206; after the gas phase phenol component is cooled by the condensing device 5, it is transported to the distillation shell 303 through the condensation pump 503 in the condensing device 5. The distillation shell 303 is filled with phenols, and at the same time, the second power supply 401 energizes the second heating resistor 306, so that the second heating resistor 306 heats the phenol components in the distillation shell 303 to separate the crude xylenol from the phenol components lighter than the crude xylenol. At this time, the crude xylenol is retained at the bottom of the distillation shell 303, and the phenol components lighter than the crude xylenol enter the condensing device 5 at the upper end of the distillation shell 303; after the phenol components lighter than the crude xylenol are cooled by the condensing device 5, they are transported to the light removal shell 402 of the light removal device 4 through the condensing pump 503, and then the second power supply 401 energizes the fourth heating resistor 405, so that the fourth heating resistor 405 heats the phenol components in the light removal shell 402 to separate the crude xylenol from the phenol components not less than the boiling point of phenol. The phenol component and the fraction with a boiling point lower than that of phenol are separated, and the phenol component with a boiling point not lower than that of phenol enters the annular pipe 203 through the pipe at the bottom of the light removal shell 402 and the third liquid pump 208, while the fraction with a boiling point lower than that of phenol is discharged from the side of the discharge barrel 404; then the circulating pump 605 in the rolling assembly 6 transports the phenol component with a boiling point not lower than that of phenol to the three rectifying barrels 301 on the right side of the axis of the distillation shell 303, and the third heating resistor 309 in the self-cleaning assembly 302 heats the phenol component with a boiling point not lower than that of phenol, so that phenol is distilled from the upper end of the self-cleaning top cover 307, and the mixed phenol at the bottom enters the three rectifying barrels 301 on the left side of the axis of the distillation shell 303 through the circulating pump 605 and the annular pipe 203;Then, the second liquid pump 207 sucks out the inorganic strong acid in the storage tank 204 and transports it to the three distillation cylinders 301 on the left side of the axis of the distillation shell 303. In the distillation cylinders 301, the inorganic strong acid reacts with the mixed phenol to undergo a decolorization reaction. Then, the decolorized mixed phenol enters the three distillation cylinders 301 on the right side of the axis of the distillation shell 303 through the circulation pump 605 and the annular pipe 203. The third heating resistor 309 heats the decolorized mixed phenol, so that water and fractions lighter than o-cresol are discharged from the upper end of the self-cleaning top cover 307, and the dehydrated mixed phenol passes through the bottom of the self-cleaning top cover 307. The mixed phenol after dehydration is heated by the third heating resistor 309, so that the o-cresol is distilled out from the upper end of the self-cleaning top cover 307, and the crude m-cresol at the bottom enters the three distillation cylinders 301 on the right side of the axis of the distillation shell 303 through the circulation pump 605 and the annular pipe 203. Then, the third heating resistor 309 heats the crude m-cresol, so that the m-cresol is distilled out from the upper end of the self-cleaning top cover 307, and the bottom of the distillation cylinder 301 is heated by the third heating resistor 309. The crude xylenol will be retained, and then the first liquid pump 202 will transport the crude xylenol at the bottom of the distillation shell 303 to the six distillation cylinders 301 respectively, and then the crude xylenol is heated by the third heating resistor 309, so that the xylenol is distilled from the upper end of the self-cleaning top cover 307, and the high-grade phenol at the bottom of the distillation cylinder 301 will be retained; when the mixed phenol in the distillation cylinder 301 is discharged, the linear motor 310 on the self-cleaning component 302 will slide up and down on the magnetic slide rail 308, and at this time, the linear motor 310 will drive the cleaning flexible disk 311 to move on the inner wall of the distillation cylinder 301 The reciprocating sliding on the distillation cylinder 301 scrapes the residual mixed phenol on the inner wall of the distillation cylinder 301 downwards to realize the self-cleaning function of the distillation cylinder 301; when the heat-conducting sleeve 217 rotates, the heat-conducting sleeve 217 drives the distillation shell 303 and the light-removal shell 402 to rotate through the feed pipe 205, and at this time, the distillation protrusion 305 on the distillation shell 303 and the light-removal protrusion 403 on the light-removal shell 402 will disturb the mixture, so that the mixture and the second heating resistor 306 and the fourth heating resistor 405 can fully exchange heat, so as to improve the heating distillation efficiency. ;

[0048] like Fig. 9 , Fig.10 , Fig.11 and Fig.12As shown, 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 thermal energy joint 502 to heat the air in the conversion chamber 511, and then the spring 507 and the high-temperature and high-pressure gas in the conversion chamber 511 drive the double-leaf valve 508 to close the entrances of the second condensation chamber 505 and the fourth condensation chamber 510, while the entrances of the first condensation chamber 504 and the third condensation chamber 509 are in an open state, and then the gas simultaneously enters the first air inlet chamber 512 and the second air inlet chamber 510 in the condensation shell 501. 14, at this time, the gas will first 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, and then when the gas continues to enter the first air inlet chamber 512, the gas pressure in the first air inlet chamber 512 will be greater than the pressure in the conversion chamber 511, and the gas pressure in the first air inlet chamber 512 will drive the double-leaf valve 508 to open the entrances of the second condensation chamber 505 and the fourth condensation chamber 510, and close the entrances of the first condensation chamber 504 and the third condensation chamber 509, so as to realize the rotation cooling function; the second condensation chamber 505 and the fourth condensation chamber 51 0 will accelerate the heat dissipation and condensation of the gas; during the rotation of the heat-conducting sleeve 217, the heat-conducting sleeve 217 drives the distillation shell 303, the condensation shell 501 and the light-removal shell 402 to rotate together through the feed pipe 205, and then the distillation shell 303 drives the switching component 601 and the annular pipeline 203 to rotate at the upper end of the scraping base 201, and the switching component 601 drives the friction roller 604 on the rolling sleeve 602 to revolve around the periphery of the conical reaction cylinder 206, and at the same time, the friction force will also drive the rolling sleeve 602 to roll on the periphery of the conical reaction cylinder 206. At this time, the rolling sleeve 602 The inner cylindrical surface will increase the friction force to drive the switching column 609 on the switching chassis 608 to rotate, and the switching column 609 drives the switching disk 606 to rotate. The switching disk 606 realizes the up and down reciprocating motion of the locking bar 603 through the intermittent contact between the switching protrusion 607 and the locking bar 603. At this time, the locking bar 603 will intermittently contact the locking ring 304, so that the distillation tube 301 intermittently rotates to realize the auxiliary centrifugal rotation function, so that the mixture in the distillation tube 301 is violently shaken through intermittent centrifugal force and inertia, thereby further improving the distillation efficiency; the condensation fixed plate 513 is used to separate the space.

[0049] A method for refining crude phenol by coal gasification, such as the above-mentioned system for refining crude phenol by coal gasification, comprises the following steps: Step 1: The crude phenol raw material is fed into the conical reaction tube 206 from the feed pipe 205 of the scraping device 2, and then the servo motor 210 in the scraping base 201 drives the second gear 212 to rotate through the first gear 209, and the second gear 212 drives the heat-conducting sleeve 217 to rotate, and the heat-conducting sleeve 217 drives the four guide plates 216 and the scraping sheet 215 to rotate synchronously, and the guide plate 216 drives the crude phenol raw material to be thrown out along the guide groove on the guide plate 216 to the outer surface of the scraping sheet 215 through the centrifugal force, and the scraping sheet 215 scrapes the crude phenol raw material on the inner surface of the conical reaction tube 206; Step 2: The first power source 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 tube 206, so that the phenol component in the crude phenol raw material is converted into a gas phase by heat, and the gas phase phenol component enters the condensing device 5 at the lower end of the distillation device 3 from the upper end of the conical reaction tube 206; Step 3: After the gaseous phenol component is cooled by the condensing device 5, it is transported to the distillation shell 303 of the distillation device 3 through the condensation pump 503 in the condensing 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 phenol component in the distillation shell 303 to separate the crude xylenol from the phenol component lighter than the crude xylenol. At this time, the crude xylenol is retained at the bottom of the distillation shell 303, and the phenol component lighter than the crude xylenol enters the condensing device 5 at the upper end of the distillation device 3; Step 4: After being cooled by the condensation device 5, the phenol components lighter than the crude xylenol are transported to the light removal housing 402 of the light removal device 4 by the condensation pump 503. Then, the second power supply 401 energizes the fourth heating resistor 405, so that the fourth heating resistor 405 heats the phenol components in the light removal housing 402, and separates the phenol components not less than the boiling point of phenol and 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 removal housing 402 and the third liquid pump 208, and the fractions less than the boiling point of phenol are discharged from the side of the discharge barrel 404. Step 5: Then the circulating pump 605 in the rolling assembly 6 transports the phenol components with a boiling point not less than phenol to the three rectifying cylinders 301 on the right side of the axis of the distillation shell 303, and the third heating resistor 309 in the self-cleaning assembly 302 heats the phenol components with a boiling point not less than phenol, so that phenol is distilled out from the upper end of the self-cleaning top cover 307, and the mixed phenol at the bottom enters the three rectifying cylinders 301 on the left side of the axis of the distillation shell 303 through the circulating pump 605 and the annular pipeline 203; Step 6: Then the second liquid pump 207 sucks out the inorganic strong acid in the storage tank 204 and transports it to the three distillation cylinders 301 on the left side of the axis of the distillation shell 303, and the inorganic strong acid reacts with the mixed phenol in the distillation cylinder 301 for decolorization, and then the decolorized mixed phenol enters the three distillation cylinders 301 on the right side of the axis of the distillation shell 303 through the circulation pump 605 and the annular pipe 203, and the third heating resistor 309 heats the decolorized mixed phenol, so that the water and the fraction lighter than o-cresol are discharged from the upper end of the self-cleaning top cover 307, and the dehydrated mixed phenol enters the three distillation cylinders 301 on the left side of the axis of the distillation shell 303 through the circulation pump 605 and the annular pipe 203; Step 7: The third heating resistor 309 heats the dehydrated mixed phenol, so that o-cresol is distilled out from the upper end of the self-cleaning top cover 307, and the crude m-cresol at the bottom enters the three distillation cylinders 301 on the right side of the axis of the distillation shell 303 through the circulation pump 605 and the annular pipe 203. Then the third heating resistor 309 heats the crude m-cresol, so that m-cresol is distilled out from the upper end of the self-cleaning top cover 307, and the crude xylenol at the bottom of the distillation cylinder 301 is retained. Then the first liquid pump 202 transports the crude xylenol at the bottom of the distillation shell 303 to the six distillation cylinders 301 respectively, and then the crude xylenol is heated by the third heating resistor 309, so that xylenol is distilled out from the upper end of the self-cleaning top cover 307, and the higher phenol at the bottom of the distillation cylinder 301 is retained. Step eight: while step three and step four are being performed, the heating rod 506 in the condensing device 5 will heat the air in the conversion chamber 511 through the waste heat of the second heating resistor 306 and the fourth heating resistor 405, and then the spring 507 and the high-temperature and high-pressure gas in the conversion chamber 511 will drive the double-leaf valve 508 to close the entrances of the second condensing chamber 505 and the fourth condensing chamber 510, and then the gas will enter the first air inlet chamber 512 and the second air inlet chamber 514 at the same time. At this time, the gas will preferentially enter the first condensing chamber 504 and the third condensing 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 will drive the double-leaf valve 508 to open the entrances of the second condensing chamber 505 and the fourth condensing chamber 510 to achieve the rotation cooling function; Step nine: While step one is being carried out, the heat-conducting sleeve 217 drives the distillation shell 303, the condensation shell 501 and the light-removal shell 402 to rotate together through the feed pipe 205, and then the distillation shell 303 drives the switching component 601 and the annular pipe 203 to rotate at the upper end of the scraper base 201, and the switching component 601 drives the friction roller 604 on the rolling sleeve 602 to revolve around the periphery of the conical reaction cylinder 206. At the same time, the friction 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 drive the switching disk 606 at the lower end of the switching column 609 to rotate. The switching disk 606 realizes the up and down reciprocating motion of the locking bar 603 by intermittent contact between the switching protrusion 607 and the locking bar 603. At this time, the locking bar 603 will intermittently contact the locking ring 304, so that the distillation cylinder 301 intermittently rotates to realize the auxiliary centrifugal rotation function.

[0050] The present invention is not limited to the above-mentioned specific implementation modes. Various changes made by technicians in the relevant technical field based on the above-mentioned conception without creative work all fall within the protection scope of the present invention.

Claims

1. A coal gasification crude phenol refining system, comprising a supporting shell (1), a film scraping device (2), a distillation device (3), a light removal device (4), a condensing device (5), and a rolling assembly (6), characterized in that: The supporting shell (1) is fixedly mounted on the periphery of the film scraping device (2); two condensing devices (5) are respectively fixedly mounted on the upper end and the lower end 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 film scraping 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 removal device (4); the film scraping device (2) is provided with a film scraping base (201) and an annular pipe (203); the outer cylindrical surface of the film scraping base (201) is fixedly connected to the inner cylindrical surface of the supporting shell (1); the annular pipe (203) is connected along the film scraping base (201); the outer cylindrical surface of the film scraping base (201) is fixedly connected to the inner cylindrical surface of the supporting shell (1); the annular pipe (203) is connected along the film scraping base (201); the inner ... The scraper base (201) is rotatably connected to the upper end of the scraper base (201) in the circumferential direction; the rolling assembly (6) is provided with a switching assembly (601), a rolling sleeve (602), a positioning strip (603), a circulating pump (605), a switching disk (606), and a switching protrusion (607); the switching assembly (601) is rotatably connected to the lower end of the distillation device (3); the circulating pump (605) is fixedly installed at the lower end of the switching assembly (601); the circulating pump (605) is also fixedly installed at the upper end of the annular pipe (203); the rolling sleeve (602) is rotatably connected to the switching assembly (601); The outer periphery of the switching assembly (601); the positioning strip (603) is slidably mounted 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 mounted on the lower end of the switching assembly (601); the switching protrusion (607) is fixedly mounted on the upper end of the switching disk (606); when the scraping device (2) drives the distillation device (3), the distillation device (3) drives the switching assembly (601) and the annular pipe (203) to rotate at the upper end of the scraping base (201), and the switching assembly (601) drives the rolling sleeve ( The outer surface of the film scraping device (602) revolves around the periphery of the film scraping device (2). At the same time, the friction between the rolling sleeve (602) and the periphery of the film scraping device (2) drives the rolling sleeve (602) to roll around the periphery of the film scraping device (2), thereby realizing the revolution and rotation functions of the rolling sleeve (602). At this time, the inner cylindrical surface of the rolling sleeve (602) drives the switching disk (606) at the lower end of the switching component (601) to rotate. The switching disk (606) realizes the up and down reciprocating motion of the locking bar (603) by intermittent contact between the switching protrusion (607) and the locking bar (603).

2. A coal gasification crude phenol refining system as claimed in claim 1, characterized in that: The film scraping device (2) also 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 slow-flow baffle (213), a first heating resistor (214), a film scraping sheet (215), a guide plate (216), and a heat-conducting sleeve (217); the first liquid pump (202) is fixedly mounted on The upper end of the annular pipe (203); the storage tank (204) is fixedly mounted on the upper end of the second liquid pump (207); the upper end of the second liquid pump (207) is fixedly mounted on the upper end of the annular pipe (203); the feed pipe (205) is fixedly mounted on the upper end of the heat-conducting sleeve (217); the conical reaction cylinder (206) is fixedly mounted on the upper end of the scraping base (201); the third liquid pump (208) is fixedly mounted on the upper end of the annular pipe (203); the first gear (209) is fixedly mounted on the servo motor (210) output end; the servo motor (210) is fixedly mounted inside the film scraping base (201) along the vertical direction; the second gear (212) is fixedly mounted at the lower end of the heat-conducting sleeve (217); the second gear (212) and the first gear (209) also form a gear pair; the first power supply (211) is fixedly mounted inside the film scraping base (201); three slow-flow baffles (213) are distributed on the periphery of the heat-conducting sleeve (217) along the axial direction of the heat-conducting sleeve (217); the first heating resistor (214) is fixedly mounted The first heating resistor (214) is mounted on the upper end of the first power supply (211); the outer cylindrical surface of the first heating resistor (214) is also rotatably connected to the inner cylindrical surface of the heat-conducting sleeve (217); four guide plates (216) are distributed on the periphery of the heat-conducting sleeve (217) along the axial direction of the heat-conducting sleeve (217); the guide plates (216) are also provided with guide grooves along the radial direction; the scraping film (215) is fixedly mounted on the periphery of the guide plate (216); and the outer surface of the scraping film (215) is also in frictional contact with the inner surface of the conical reaction tube (206).

3. A coal gasification crude phenol refining system as claimed in claim 2, characterized in that: The distillation device (3) comprises a distillation cylinder (301), a self-cleaning component (302), a distillation shell (303), a positioning ring (304), a distillation convex block (305), and a second heating resistor (306); the six distillation cylinders (301) are rotatably connected to the lower ends of the six self-cleaning components (302); the six distillation cylinders (301) are also rotatably connected to the upper ends of the six switching components (601); the six self-cleaning components (302) are evenly distributed on the periphery of the distillation shell (303) along the circumferential direction. The distillation shell (303) is rotatably connected to the upper end of the conical reaction cylinder (206); the bottom of the distillation shell (303) is connected to the first liquid pump (202) through a pipeline; the positioning ring (304) is fixedly installed on the periphery of the distillation cylinder (301); the distillation protrusion (305) is fixedly installed inside the distillation shell (303); the second heating resistor (306) is fixedly installed inside the distillation shell (303); the second heating resistor (306) is also fixedly connected to the side of the light removal device (4).

4. A coal gasification crude phenol refining system as claimed in claim 3, characterized in that: The self-cleaning component (302) comprises a self-cleaning top cover (307), a magnetic slide rail (308), a third heating resistor (309), a linear motor (310), and a cleaning flexible disk (311); the self-cleaning top cover (307) is fixedly mounted on the periphery of the distillation shell (303); the self-cleaning top cover (307) is used for discharging and dissipating heat of the product; the third heating resistor (309) is fixedly mounted on 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 mounted 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 mounted on the magnetic slide rail (308) along the axial direction of the third heating resistor (309); the cleaning flexible disk (311) is fixedly mounted 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 distillation barrel (301).

5. A coal gasification crude phenol refining system as claimed in claim 4, characterized in that: The de-lightening device (4) comprises a second power supply (401), a de-lightening shell (402), a de-lightening protrusion (403), a discharge barrel (404), and a fourth heating resistor (405); the second power supply (401) is fixedly mounted 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 de-lightening shell (402) is fixedly mounted on the upper end of the distillation shell (303); the bottom of the de-lightening shell (402) is connected to the third liquid pump (208) through a pipeline; the de-lightening protrusion (403) is fixedly mounted on the inner surface of the de-lightening shell (402); the discharge barrel (404) is fixedly mounted on the upper end of the de-lightening shell (402); the discharge barrel (404) is also fixedly mounted on the periphery of the feed pipe (205); and the fourth heating resistor (405) is fixedly mounted inside the de-lightening shell (402).

6. A coal gasification crude phenol refining system as claimed in claim 5, characterized in that: The condensation device (5) comprises a condensation shell (501), a thermal energy joint (502), and a condensation pump (503); the condensation shells (501) of the two condensation devices (5) are fixedly installed at the upper end and the lower end of the distillation shell (303); the condensation shell (501) at the lower end of the distillation 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 shell (303) is fixedly installed at the lower end of the light removal shell (402); the condensation shells (501) of the two condensation devices (5) are fixedly installed on the periphery of the feed pipe (205); the thermal energy joint (502) is fixedly installed at the upper end of the condensation shell (501); the thermal energy joint (502) is also fixedly connected to the second heating resistor (306) and the fourth heating resistor (405) respectively; and the condensation pump (503) is fixedly installed at the upper end of the condensation shell (501).

7. A coal gasification crude phenol refining system as claimed in claim 6, characterized in that: The condensation device (5) further comprises 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 conversion 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 mounted inside the condensation housing (501); the second condensation chamber (505) is fixedly mounted inside the condensation housing (501); 01); a cooling tank is arranged inside the second condensing chamber (505); cooling oil is stored in the cooling tank in the second condensing chamber (505); the third condensing chamber (509) is fixedly installed inside the condensing shell (501); the fourth condensing chamber (510) is fixedly installed inside the condensing shell (501); a cooling tank is arranged inside the fourth condensing chamber (510); cooling oil is stored in the cooling tank in the fourth condensing chamber (510); the double-leaf valve (508) is rotatably connected to the condensing shell (501) The condensation fixing plate (513) is fixedly mounted inside the condensation housing (501); the two ends of the spring (507) are respectively fixedly mounted on the side of the condensation fixing plate (513) and the side of the double-leaf valve (508); the spring (507) drives the double-leaf valve (508) to close the entrance of the second condensation chamber (505) and the entrance of the fourth condensation chamber (510); the obtuse angle area between the condensation fixing plate (513) and the double-leaf valve (508) is the conversion chamber (511); the heating rod (506) is fixedly mounted on the side of the condensation fixing plate (513) and the double-leaf valve (508 ... The heating rod (506) is fixedly installed inside the conversion chamber (511); the upper end of the heating rod (506) is fixedly connected to the lower end of the thermal energy joint (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 shell (303) respectively; the chambers at the entrance of the second condensation chamber (505) and the entrance of the fourth condensation chamber (510) are the first air inlet chamber (512); the chambers at the entrance of the first condensation chamber (504) and the entrance of the third condensation chamber (509) are the second air inlet chamber (514).

8. A coal gasification crude phenol refining system as claimed in claim 7, characterized in that: The rolling assembly (6) further comprises 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); and the friction roller (604) is fixedly mounted on the periphery of the rolling sleeve (602).

9. A coal gasification crude phenol refining system as claimed in claim 8, characterized in that: The switching assembly (601) comprises 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 distillation cylinder (301); the switching chassis (608) is fixedly mounted on the upper end of the circulating 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 axial direction of the switching chassis (608); and 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 by coal gasification, characterized in that: The coal gasification crude phenol refining system as claimed in claim 9 comprises the following steps: Step 1: The crude phenol raw material is fed into the conical reaction tube (206) from the feed pipe (205) of the scraping device (2), and then the servo motor (210) in the scraping base (201) drives the second gear (212) to rotate through the first gear (209), and the second gear (212) drives the heat-conducting sleeve (217) to rotate, and the heat-conducting sleeve (217) drives the four guide plates (216) and the scraping sheet (215) to rotate synchronously, and the guide plate (216) drives the crude phenol raw material along the guide groove on the guide plate (216) through centrifugal force to be thrown out to the outer surface of the scraping sheet (215), and the scraping sheet (215) scrapes the crude phenol raw material on the inner surface of the conical reaction tube (206); Step 2: The first power source (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 tube (206), so that the phenol component in the crude phenol raw material is converted into a gas phase by heat, and the gas phase phenol component enters the condensation device (5) at the lower end of the distillation device (3) from the upper end of the conical reaction tube (206); Step 3: After the gaseous phenol component is cooled by the condensing device (5), it is transported to the distillation shell (303) of the distillation device (3) through the condensing pump (503) in the condensing device (5). At the same time, the second power supply (401) on the light removal device (4) is energized to the second heating resistor (306), so that the second heating resistor (306) heats the phenol component in the distillation shell (303) to separate the crude xylenol from the phenol component lighter than the crude xylenol. At this time, the crude xylenol is retained at the bottom of the distillation shell (303), and the phenol component lighter than the crude xylenol enters the condensing device (5) at the upper end of the distillation device (3); Step 4: The phenol components lighter than the crude xylenol are cooled by the condensation device (5) and then transported to the light removal shell (402) of the light removal device (4) through the condensation pump (503). Then, the second power supply (401) energizes the fourth heating resistor (405), so that the fourth heating resistor (405) heats the phenol components in the light removal shell (402), and separates the phenol components not less than the boiling point of phenol and 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 removal 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 barrel (404); Step 5: Subsequently, the circulating pump (605) in the rolling assembly (6) transports the phenol components with a boiling point not less than that of phenol to the three rectifying cylinders (301) on the right side of the axis of the distillation shell (303), and the third heating resistor (309) in the self-cleaning assembly (302) heats the phenol components with a boiling point not less than that of phenol, so that phenol is distilled out from the upper end of the self-cleaning top cover (307), and the mixed phenol at the bottom enters the three rectifying cylinders (301) on the left side of the axis of the distillation shell (303) through the circulating pump (605) and the annular pipe (203); Step 6: Then the second liquid pump (207) sucks out the inorganic strong acid in the storage tank (204) and transports it to the three distillation cylinders (301) on the left side of the axis of the distillation shell (303). In the distillation cylinder (301), the inorganic strong acid reacts with the mixed phenol to undergo a decolorization reaction. Then the decolorized mixed phenol enters the three distillation cylinders (301) on the right side of the axis of the distillation shell (303) through the circulation pump (605) and the annular pipe (203). The third heating resistor (309) heats the decolorized mixed phenol so that water and 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 distillation cylinders (301) on the left side of the axis of the distillation shell (303) through the circulation pump (605) and the annular pipe (203). Step 7: The third heating resistor (309) heats the dehydrated mixed phenol, so that o-cresol is distilled out from the upper end of the self-cleaning top cover (307), and the crude m-cresol at the bottom enters the three distillation cylinders (301) on the right side of the axis of the distillation shell (303) through the circulation pump (605) and the annular pipe (203). Then, the third heating resistor (309) heats the crude m-cresol, so that m-cresol is distilled out from the upper end of the self-cleaning top cover (307), and the crude xylenol at the bottom of the distillation cylinder (301) is retained. Then, the first liquid pump (202) transports the crude xylenol at the bottom of the distillation shell (303) to the six distillation cylinders (301), and then the third heating resistor (309) heats the crude xylenol, so that xylenol is distilled out from the upper end of the self-cleaning top cover (307), and the higher phenol at the bottom of the distillation cylinder (301) is retained. Step 8: While step 3 and step 4 are being performed, the heating rod (506) in the condensing device (5) heats the air in the conversion chamber (511) through the residual heat of the second heating resistor (306) and the fourth heating resistor (405), and then drives the double-leaf valve (508) to close the entrances of the second condensing chamber (505) and the fourth condensing chamber (510) through the spring (507) and the high-temperature and high-pressure gas in the conversion chamber (511), and then 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 will preferentially enter the first condensing chamber (504) and the third condensing 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 will drive the double-leaf valve (508) to open the entrances of the second condensing chamber (505) and the fourth condensing chamber (510), thereby realizing the rotation cooling function; Step 9: While step 1 is being performed, the heat-conducting sleeve (217) drives the distillation shell (303), the condensation shell (501) and the light-removal shell (402) to rotate together through the feed pipe (205), and then the distillation shell (303) drives the switching component (601) and the annular pipe (203) to rotate at the upper end of the scraping base (201), and the switching component (601) drives the friction roller (604) on the rolling sleeve (602) to revolve around the periphery of the conical reaction cylinder (206), and the friction force also drives the rolling The sleeve (602) rolls 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 up and down reciprocating motion of the locking bar (603) by intermittent contact between the switching protrusion (607) and the locking bar (603). At this time, the locking bar (603) will intermittently contact with the locking ring (304), so that the distillation cylinder (301) intermittently rotates, thereby realizing the auxiliary centrifugal rotation function.

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