Coal tar dehydration device
By introducing a tar centrifuge, a spherical filter valve filter and a spiral heat conduction pipe into the coal tar dehydration device, combined with a circulating heat conduction and liquid level adjustment mechanism, the problems of low tar quality and high energy consumption in the existing devices are solved, and high efficiency is achieved Purification and energy consumption optimization.
Patent Information
- Application Number
- CN202411394426.X
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2024-10-08
- Publication Date
- 2024-12-10
AI Technical Summary
The existing coal tar dehydration device fails to effectively pre-deslag and preheat, resulting in low quality of tar by-products, high energy consumption, and short service life of the pump body in high temperature and high pressure environments.
A coal tar dehydration device is designed, including a tar centrifuge, a spherical filter valve filter and a spiral heat conduction pipe. The tar is further purified by two filtration and preheating treatments, and the energy consumption and liquid level adjustment mechanism are optimized by circulating heat conduction mechanism and liquid level adjustment mechanism. Equipment life.
It realizes efficient purification of tar, reduces energy consumption, extends the service life of the equipment, and improves the quality and production efficiency of tar.
Smart Images
Figure CN119101535A_ABST
Abstract
Description
Technical Field
[0001] The invention relates to the technical field of tar dehydration, in particular to a coal tar dehydration device. Background Art
[0002] Coal tar is one of the crude gas products generated by the pyrolysis of industrial coal for coking. It is a black viscous liquid at room temperature and pressure. A small amount of water exists in coal tar, forming an emulsion of water and tar, which makes the tar unevenly heated. The water may suddenly boil due to overheating, causing the tar to spray out. In addition, the water may introduce corrosive impurities, causing corrosion of equipment and pipelines. High-temperature coal tar is mainly a complex mixture composed of aromatic hydrocarbons. There are about 500 organic compounds in tar that have been identified. At present, the main products obtained from the processing and refining of coal tar are: naphthalene, acenaphthene, anthracene, phenanthrene, carbazole, indole, various phenols, pyridine products, coal tar and various neutral oils.
[0003] Patent No. CN205740893U proposes a high-temperature coal tar dehydration device, which belongs to the field of coal tar processing. The high-temperature coal tar dehydration device includes a tank body, a tank top cover and an electrode. A receiving chamber for receiving high-temperature coal tar is arranged in the tank body. The tank body includes a first end and a second end, and the first end is provided with a tank top opening connected to the receiving chamber, and the tank top cover is detachably connected to the first end and closes the tank top opening. The electrode includes a working part, a fixing part and a wiring part connected in sequence, the working part is located in the receiving chamber, the fixing part is insulated and connected to the tank body, and the wiring part is located outside the tank body. The high-temperature coal tar dehydration device can be used to quickly and conveniently dehydrate high-temperature coal tar, and the device has a simple structure and is easy to use, which can reduce the dehydration cost of high-temperature coal tar.
[0004] The existing device has the following problems when in use: 1. When in use, the existing device usually does not use a centrifuge to centrifuge the raw tar, and then directly uses a tar pump to pump it into the dehydration tower. The moisture content of the tar separated in this way is greater than 4%, and water and coal tar form a stable emulsion that is not easy to separate. When the coal tar is heated in the furnace, water droplets will evaporate rapidly, causing the pressure of the furnace tube and the entire system to increase significantly, destroying normal operation. If the moisture content in the coal tar is too high, it will cause the pressure of the furnace tube and the entire system to increase significantly and cause major accidents. 2. The existing device lacks a secondary slag removal mechanism for the tar raw material. The oil residue content inside the tar is relatively high, and it is easy to adhere to the inner wall of the dehydration tower. If it is not cleaned in time, it will affect the quality of the tar output fraction; 3. When adjusting the liquid level in the tower, the existing device usually uses the method of pumping out or pumping in the raw tar from the bottom of the tower to adjust it, but this method has high pressure bearing capacity requirements for the pump body. In a high temperature and high pressure environment, the service life of the pump body is relatively short.
[0005] Therefore, the present application provides a coal tar dehydration device to meet the demand. Summary of the invention
[0006] The technical problem to be solved by the present invention is to provide a coal tar dehydration device to solve the problem that the existing device does not pre-de-slag and preheat the raw tar, resulting in low quality of tar by-products and high energy consumption in the production process.
[0007] In order to solve the above technical problems, the present invention provides the following technical solutions:
[0008] A coal tar dehydration device, comprising a tar centrifuge, wherein the tar centrifuge is connected to a raw material tar tank through a pipeline, the tar centrifuge is connected to a secondary slag removal mechanism through a pipeline, the secondary slag removal mechanism is connected to a circulating heat conduction mechanism and a dehydration tower body through pipelines, respectively, the circulating heat conduction mechanism is arranged on one side of the dehydration tower body, the circulating heat conduction mechanism and the dehydration tower body are connected through a pipeline, a liquid level regulating mechanism is arranged on one side of the dehydration tower body, the dehydration tower body is connected to an oil-water separator through a pipeline, the dehydration tower body is connected to a fractionation tower body through a pipeline, and the dehydration tower body is connected to an oil-water separator through a pipeline. The tower body comprises a tubular furnace, a third smoke exhauster, a fourth smoke exhauster, a cooler and a liquid level regulating pipe. The tubular furnace is arranged on the ground surface. The top of the tubular furnace is provided with a third smoke exhauster. One side of the third smoke exhauster is connected to the fourth smoke exhauster. One side of the fourth smoke exhauster is provided with a cooler. The bottom of the tubular furnace is provided with a liquid level regulating pipe. The dehydration tower body (4): the tower diameter is DN1800, the tower height is H=35706, the weight is about 30 tons, a stainless steel float valve tower plate is selected, the separation efficiency is high, the operation flexibility is relatively large, and the tower body material is 00Cr17Ni14Mo2.
[0009] A secondary slag removal mechanism, the secondary slag removal mechanism comprises a first filter, a second filter, a bracket, a first tar pump, a pre-dehydration tower body, a guide groove, a filter tube, a second tar pump, a spiral heat conduction pipe, an evaporation chamber and a vacuum unit, the first tar pump is fixedly installed on one side of the tar outlet pipeline of the tar centrifuge, one side of the first tar pump is connected with the pre-dehydration tower body, a guide groove is provided at the bottom of the interior of the pre-dehydration tower body, the bottom of the guide groove is connected with the filter tube, a one-way valve is provided at the connection between the guide groove and the filter tube, one side of the filter tube is connected with the second tar pump, the top of the second tar pump is connected with the spiral heat conduction pipe, the spiral heat conduction pipe is arranged in the interior of the evaporation chamber, the evaporation chamber is fixedly installed on the top of the bracket, one side of the evaporation chamber is provided with a vacuum unit, the interior of the filter tube is provided with the first filter and the second filter, the first filter and the second filter both comprise a spherical filter valve, a first A worm wheel, a first worm, a rotating disk, a bearing sleeve, a transfer tube, a first sleeve, a sealing block, a first spring, a sealing plate, and a second sleeve, the spherical filter valve is movably installed inside the filter tube, a first worm wheel is fixedly installed on the top of the spherical filter valve, a first worm is meshingly driven on one side of the first worm wheel, a rotating disk is fixedly installed on one side of the first worm, the first worm is movably installed inside the bearing sleeve, the bearing sleeve is fixedly installed on one side of the transfer tube, the transfer tube is connected with the filter tube, and the transfer tube is symmetrically arranged with the filter tube as the center, a first sleeve is fixedly installed inside the transfer tube, a sealing block is movably installed on one side of the first sleeve, an evaporation chamber is arranged on one side of the sealing block, a starting end of the first spring is fixedly connected to one side of the sealing block, a tail end of the first spring is fixedly connected to one side of the sealing plate, the sealing plate is fixedly installed inside the transfer tube, and one side of the sealing plate is connected with the second sleeve;
[0010] The pre-dehydration tower body adopts a vertical cylindrical tube furnace with a capacity of 23.4GJ / h and a thermal efficiency of about 75%, which saves space and steel. The furnace tube has a diameter of DN100 and is made of 0Cr18Ni9. The centrifugal tar pumped to the inside of the filter tube by the first tar pump is filtered once through the spherical filter valve inside the first filter, and the centrifugal tar is filtered twice through the spherical filter valve inside the second filter, so as to further reduce the tar residue inside the raw tar.
[0011] The circulating heat-conducting mechanism comprises a base, a first heater, a second heater, a first smoke exhauster, a first heat-conducting oil circulation pipe, a second heat-conducting oil circulation pipe, a third heater, a fourth heater, a second smoke exhauster, a first smoke exhaust pipe, a first tar pipe, a first spiral positioning frame, a first heating pipe, a first sleeve, a second sleeve and a second tar pipe. The base is arranged on the ground surface, a resistance heater is arranged inside the base, a first heater is fixedly installed on the top of the base, a second heater is fixedly installed on the top of the first heater, a first smoke exhauster is fixedly installed on the top of the second heater, and the bottom of the first heater is connected to the third heater through the first heat-conducting oil circulation pipe. The third heater is connected to the main body of the dehydration tower, the fourth heater is fixedly installed on the top of the third heater, the second smoke exhauster is fixedly installed on the top of the fourth heater, the second smoke exhauster is connected to the first smoke exhauster through the first smoke exhaust pipe, one side of the third heater is connected to the first heater through the second heat transfer oil circulation pipe, one side of the second heater is connected to the main body of the dehydration tower through the first tar pipe, the first heater is provided with a first spiral positioning frame, one side of the first spiral positioning frame is fixedly installed with a plurality of first heating pipes, one side of the first spiral positioning frame is fixedly installed with a first sleeve, one side of the first sleeve is provided with a second sleeve, and one side of the first sleeve is connected with the second tar pipe. After the filtered raw tar enters the second tar pump, a part of it is pumped into the inside of the spiral heat pipe, and is preheated by the high-temperature steam inside the evaporation chamber. After heat exchange, the high-temperature steam and light oil inside the main body of the dehydration tower enter the evaporation chamber and partially condense when they are cold. The spiral heat pipe is arranged as a spiral pipe, which prolongs the heating time and effectively utilizes the heat of the high-temperature steam.
[0012] As a preferred solution, the first filter and the second filter also include a hydraulic cylinder, a cross bar, a piston column, a first hollow tube, a first side hole, a second hollow tube, a second side hole, a second spring, a third sleeve and a slag discharge pipe. The hydraulic cylinder is fixedly installed on one side of the bracket, a cross bar is fixedly installed on one side of the hydraulic cylinder, a piston column is fixedly connected to one side of the cross bar, a first hollow tube is fixedly connected to one side of the piston column, a first side hole is opened on one side of the first hollow tube, the first hollow tube passes through the spherical filter valve and is movably connected to one side of the second hollow tube, a second side hole is opened at the bottom of the second hollow tube, a second spring is fixedly connected to one side of the second hollow tube, the second spring is arranged inside the third sleeve, and the bottom of the second side hole is connected to the slag discharge pipe. When the piston rod pushes the first hollow tube to penetrate the spherical filter valve, the tar residue inside the spherical filter valve is separated into the first hollow tube, and at the same time, the first side hole guides the raw tar inside the filter tube to the first hollow tube and the second hollow tube. Under the impact of the subsequent raw tar, the tar residue enters the interior of the slag discharge pipe through the second side hole along with part of the raw tar, and is then discharged. This process is completely carried out inside the pipeline, and the tar residue is safely and efficiently discharged without leakage.
[0013] As a preferred solution, a cross through hole is opened inside the spherical filter valve, a screen is arranged inside one of the through holes, and the pores of the screen inside the spherical filter valve on the first filter are larger than the pores of the screen inside the spherical filter valve on the second filter, and the sealing plate is fixedly installed inside the transfer tube.
[0014] As a preferred solution, a cavity is opened inside the first hollow tube, and the cavity is connected to the first side hole. The outer diameter of the first hollow tube is the same as the inner diameter of the cross hole inside the spherical filter valve. The first hollow tube is movably installed inside the first sleeve. A one-way valve is provided at the connection between the slag discharge pipe and the second sleeve. The second hollow tube is movably installed inside the second sleeve and the sealing plate.
[0015] As a preferred solution, the circulating heat conduction mechanism also includes a second spiral positioning frame, a second heating pipe, a first tar circulation pump, a third heat transfer oil circulation pipe, a heat transfer oil heating bin, a third heating pipe, a second tar circulation pump and a fourth heating pipe. The second spiral positioning frame is divided into an upper and lower part, and the upper and lower parts of the second spiral positioning frame are both arranged inside the third heater. A plurality of second heating pipes are fixedly installed on one side of the second spiral positioning frame. The first tar circulation pump is connected to the top of one side of the third heater, and the third heat transfer oil circulation pipe is connected to the bottom of one side of the third heater. The first tar circulation pump and the third heat transfer oil circulation pipe are both connected to the heat transfer oil heating bin. A third heating pipe is arranged inside the heat transfer oil heating bin. The starting end of the third heating pipe passes through the top of the heat transfer oil heating bin and is connected to the second tar circulation pump. The tail end of the third heating pipe passes through the bottom of the heat transfer oil heating bin and is connected to the fourth heating pipe. The second tar circulation pump is fixedly installed on one side of the top of the tubular furnace, and the fourth heating pipe is fixedly installed on one side of the bottom of the tubular furnace.
[0016] As a preferred solution, a partition is provided inside the third heater, and the partition divides the third heater into two upper and lower closed cavities, the closed cavity at the top of the third heater is connected to the second heat transfer oil circulation pipe and the first tar circulation pump respectively, and the closed cavity at the bottom of the third heater is connected to the first heat transfer oil circulation pipe and the third heat transfer oil circulation pipe respectively, the first heater, the second heater, the base and the first sleeve constitute a closed cavity, and the closed cavity is connected to the first heat transfer oil circulation pipe and the second heat transfer oil circulation pipe, and at the same time, the closed cavity and the closed cavity inside the third heater are filled with heat transfer oil.
[0017] As a preferred solution, the interior of the thermal oil heating bin is filled with thermal oil, the third heating pipe is an S-shaped pipe, and the middle section of the third heating pipe is arranged on the outside of the thermal oil heating bin, and a temperature and pressure instrument is arranged in the middle section of the third heating pipe.
[0018] As a preferred solution, the liquid level regulating mechanism includes a liquid level regulating valve, a winding bin, a liquid level regulating bin, a transfer sealing tube, a positioning block, a servo motor, a second worm and a second worm wheel, the liquid level regulating valve is arranged on one side of the liquid level regulating tube, one side of the liquid level regulating valve is connected with the liquid level regulating bin, one side of the liquid level regulating bin is connected with the transfer sealing tube, one side of the transfer sealing tube is fixedly installed with a winding bin, one side of the winding bin and the liquid level regulating bin is provided with a positioning block, the positioning block is fixedly installed on the ground surface, one side of the positioning block is fixedly installed with a servo motor, the output end of the servo motor is fixedly installed with a second worm, one side of the second worm is meshingly driven with a second worm wheel, and the second worm wheel is movably installed on one side of the positioning block.
[0019] As a preferred solution, the liquid level regulating mechanism also includes a first rotating rod, a first pulley, a sealing cover, a guide groove, a belt, a second pulley, a second rotating rod and a flexible coil. The first rotating rod is fixedly installed on one side of the second worm gear, one side of the first rotating rod is fixedly sleeved with the first pulley, the first pulley is movably installed on one side of the sealing cover, the guide groove is opened on one side of the liquid level regulating bin, one side of the first pulley is driven by a belt, one side of the belt is driven by a second pulley, one side of the second pulley is fixedly sleeved with the second rotating rod, and one side of the second rotating rod is provided with a flexible coil.
[0020] As a preferred solution, the flexible coil is wound around the second rotating rod, and the flexible coil is made of flexible rubber. The tail section of the flexible coil is fixedly mounted on one side of the second rotating rod, and the starting end of the flexible coil passes through the channel inside the transfer sealing tube and is fixedly mounted on one side of the first rotating rod. The second rotating rod is movably mounted on one side of the positioning block.
[0021] Compared with the prior art, the present invention has at least the following beneficial effects:
[0022] 1. A coal tar dehydration device, by setting a spherical filter valve, after the raw tar is dehydrated by a tar centrifuge through the spherical filter valve inside the first filter and the second filter, the dehydrated tar is again subjected to primary and secondary deslagging treatment, and the tiny tar residue in the dehydrated tar is further screened. This process is completely carried out inside the filter tube, and the raw tar can be further purified without leakage.
[0023] 2. A coal tar dehydration device, which is provided with a spiral heat pipe, utilizes the water vapor and light oil evaporated after the raw tar inside the dehydration tower body is heated, and enters the interior of the evaporation chamber through the exhaust pipe, and preheats the spiral heat pipe. After heat exchange inside the evaporation chamber, part of the high-temperature steam and light oil condenses into water droplets when it is cold, and then enters the interior of the oil-water separator for oil-water separation after being completely cooled to degrees Celsius through a cooler. The preheated raw tar can reduce energy consumption when entering the circulating heat conduction mechanism for heating.
[0024] 3. A coal tar dehydration device, by setting a flexible coil, compared with the traditional method of using a liquid level regulating valve to control the liquid level inside the dehydration tower body, the method of increasing or decreasing the volume inside the liquid level regulating bin by winding up the flexible coil only requires driving the first rotating rod to rotate. Most of the pressure is borne by the flexible coil and the liquid level regulating bin, and will not cause a significant impact on the driving device, thereby reducing the energy consumption of adjusting the liquid level and extending the service life of the equipment. BRIEF DESCRIPTION OF THE DRAWINGS
[0025] The accompanying drawings, which are incorporated herein and constitute a part of the specification, illustrate embodiments of the present disclosure and, together with the description, further serve to explain the principles of the present disclosure and to enable those skilled in the relevant art to make and use the present disclosure.
[0026] Figure 1 This is a schematic diagram of the main structure of a coal tar dehydration device;
[0027] Figure 2 It is a partial structural schematic diagram of a coal tar dehydration device;
[0028] Figure 3 It is a schematic diagram of the main structure of a secondary slag removal mechanism of a coal tar dehydration device;
[0029] Figure 4 It is a schematic diagram of the local structure of the secondary slag removal mechanism;
[0030] Figure 5 It is a schematic diagram of the exploded structure of the secondary slag removal mechanism;
[0031] Figure 6 This is a schematic diagram of the slag removal structure of the secondary slag removal mechanism;
[0032] Figure 7 It is a schematic diagram of the main structure of the circulating heat conduction mechanism;
[0033] Figure 8 It is a schematic diagram of the local structure of the circulating heat conduction mechanism;
[0034] Fig. 9 It is a top view of the circulating heat conduction mechanism;
[0035] Fig.10 It is a schematic diagram of the decomposed structure of the circulating heat conduction mechanism;
[0036] Fig.11 It is a schematic diagram of the local structure of the circulating heat conduction mechanism.
[0037] Fig.12 It is a schematic diagram of the main structure of the liquid level regulating mechanism;
[0038] Fig.13 It is a schematic diagram of the local structure of the liquid level regulating mechanism;
[0039] Fig.14 Schematic diagram of the exploded structure of the liquid level regulating mechanism.
[0040] 1. Tar centrifuge; 2. Secondary slag removal mechanism; 21. First filter; 22. Second filter; 201. First tar pump; 202. Pre-dehydration tower body; 203. Diversion trough; 204. Filter tube; 205. Second tar pump; 206. Spiral heat pipe; 207. Evaporation chamber; 208. Vacuum unit; 209. Ball filter valve; 210. First worm gear; 211. First worm; 212. Turntable; 213. Bearing sleeve; 214. Transfer tube; 215. First sleeve; 216. Sealing block; 217. First spring; 218. Sealing plate; 2 19, second sleeve; 220, hydraulic cylinder; 221, cross bar; 222, piston rod; 223, first hollow tube; 224, first side hole; 225, second hollow tube; 226, second side hole; 227, second spring; 228, third sleeve; 229, slag discharge pipe; 230, bracket; 3, circulating heat conduction mechanism; 301, base; 302, first heater; 303, second heater; 304, first smoke exhauster; 305, first heat transfer oil circulation pipe; 306, second heat transfer oil circulation pipe; 307, third heater; 308, fourth heater; 3 09, second smoke exhauster; 310, first smoke exhaust pipe; 311, first tar pipe; 312, first spiral positioning frame; 313, first heating pipe; 314, first sleeve; 315, second sleeve; 316, second tar pipe; 317, second spiral positioning frame; 318, second heating pipe; 319, first tar circulation pump; 320, third heat transfer oil circulation pipe; 321, heat transfer oil heating chamber; 322, third heating pipe; 323, second tar circulation pump; 324, fourth heating pipe; 4, dehydration tower body; 401, tubular furnace; 402, third smoke exhauster ; 403, the fourth smoke exhauster; 404, the cooler; 405, the liquid level regulating tube; 5, the liquid level regulating mechanism; 501, the liquid level regulating valve; 502, the winding bin; 503, the liquid level regulating bin; 504, the transfer sealing tube; 505, the positioning block; 506, the servo motor; 507, the second worm; 508, the second worm wheel; 509, the first rotating rod; 510, the first leather wheel; 511, the sealing cover; 512, the guide groove; 513, the belt; 514, the second leather wheel; 515, the second rotating rod; 516, the flexible coil; 6, the oil-water separator; 7, the distillation tower body.
[0041] As shown in the figure, in order to clearly implement the structure of the embodiment of the present invention, specific structures and devices are marked in the figure, but this is only for illustrative purposes and is not intended to limit the present invention to the specific structure, device and environment. According to specific needs, ordinary technicians in this field can adjust or modify these devices and environments, and the adjustments or modifications made are still included in the scope of the attached claims. DETAILED DESCRIPTION
[0042] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.
[0043] Example
[0044] like Figure 1 and Figure 2 As shown, an embodiment of the present invention provides a coal tar dehydration device, including a tar centrifuge 1, which is connected to a raw material tar tank through a pipeline, and the tar centrifuge 1 is connected to a secondary slag removal mechanism 2 through a pipeline, and the secondary slag removal mechanism 2 is respectively connected to a circulating heat conduction mechanism 3 and a dehydration tower body 4 through pipelines, and the circulating heat conduction mechanism 3 is arranged on one side of the dehydration tower body 4, and the circulating heat conduction mechanism 3 and the dehydration tower body 4 are connected through a pipeline, and a liquid level adjustment mechanism 5 is arranged on one side of the dehydration tower body 4, and the dehydration tower body 4 is connected to the oil through the pipeline. The dehydration tower body 4 is connected to the water separator 6, and the dehydration tower body 4 is connected to the distillation tower body 7 through a pipeline. The dehydration tower body 4 includes a tubular furnace 401, a third smoke exhauster 402, a fourth smoke exhauster 403, a cooler 404 and a liquid level regulating pipe 405. The tubular furnace 401 is arranged on the ground surface, the top of the tubular furnace 401 is provided with the third smoke exhauster 402, one side of the third smoke exhauster 402 is connected to the fourth smoke exhauster 403, one side of the fourth smoke exhauster 403 is provided with a cooler 404, and the bottom of the tubular furnace 401 is provided with a liquid level regulating pipe 405;
[0045] like Figure 3 , Figure 4 , Figure 5 , Figure 6 and Figure 7As shown, the secondary slag removal mechanism 2 includes a first filter 21, a second filter 22, a bracket 230, a first tar pump 201, a pre-dehydration tower body 202, a guide groove 203, a filter tube 204, a second tar pump 205, a spiral heat pipe 206, an evaporation chamber 207 and a vacuum unit 208. The first tar pump 201 is fixedly installed on one side of the tar outlet pipeline of the tar centrifuge 1, and one side of the first tar pump 201 is connected to the pre-dehydration tower body 202. The bottom of the pre-dehydration tower body 202 is provided with a guide groove 203, and the bottom of the guide groove 203 is connected to the filter tube 204. The connection between the guide groove 203 and the filter tube 204 is provided with a one-way valve, one side of the filter tube 204 is connected with a second tar pump 205, the top of the second tar pump 205 is connected with a spiral heat pipe 206, the spiral heat pipe 206 is arranged inside the evaporation chamber 207, the evaporation chamber 207 is fixedly installed on the top of the bracket 230, one side of the evaporation chamber 207 is provided with a vacuum unit 208, the inside of the filter tube 204 is provided with a first filter 21 and a second filter 22, the first filter 21 and the second filter 22 both include a spherical filter valve 209, a first worm gear 210, a first worm gear 211, and a first worm gear 212. Rod 211, turntable 212, bearing sleeve 213, transfer tube 214, first sleeve 215, sealing block 216, first spring 217, sealing plate 218 and second sleeve 219, spherical filter valve 209 is movably mounted inside filter tube 204, a first worm gear 210 is fixedly mounted on the top of spherical filter valve 209, a first worm 211 is meshed and driven on one side of the first worm gear 210, a turntable 212 is fixedly mounted on one side of the first worm 211, the first worm 211 is movably mounted inside the bearing sleeve 213, and the bearing sleeve 213 is fixedly mounted on the transfer tube 214. On one side, the transfer tube 214 is connected to the filter tube 204, and the transfer tube 214 is symmetrically arranged with the filter tube 204 as the center. A first sleeve 215 is fixedly installed inside the transfer tube 214, a sealing block 216 is movably installed on one side of the first sleeve 215, and an evaporation chamber 207 is arranged on one side of the sealing block 216. The starting end of the first spring 217 is fixedly connected to one side of the sealing block 216, and the tail end of the first spring 217 is fixedly connected to one side of the sealing plate 218. The sealing plate 218 is fixedly installed inside the transfer tube 214, and one side of the sealing plate 218 is connected to the second sleeve 219;
[0046] The first filter 21 and the second filter 22 further include a hydraulic cylinder 220, a cross bar 221, a piston column 222, a first hollow tube 223, a first side hole 224, a second hollow tube 225, a second side hole 226, a second spring 227, a third sleeve 228 and a slag discharge pipe 229. The hydraulic cylinder 220 is fixedly mounted on one side of the bracket 230, a cross bar 221 is fixedly mounted on one side of the hydraulic cylinder 220, a piston column 222 is fixedly connected to one side of the cross bar 221, and the piston column 222 A first hollow tube 223 is fixedly connected to one side of the first hollow tube 223, a first side hole 224 is opened on one side of the first hollow tube 223, after the first hollow tube 223 passes through the spherical filter valve 209, it is movably connected to one side of the second hollow tube 225, a second side hole 226 is opened at the bottom of the second hollow tube 225, a second spring 227 is fixedly connected to one side of the second hollow tube 225, the second spring 227 is arranged inside the third sleeve 228, and the bottom of the second side hole 226 is connected to a slag discharge pipe 229.
[0047] A cross through hole is opened inside the spherical filter valve 209, and a screen is arranged inside one of the through holes. The pores of the screen inside the spherical filter valve 209 on the first filter 21 are larger than the pores of the screen inside the spherical filter valve 209 on the second filter 22. The sealing plate 218 is fixedly installed inside the transfer tube 214.
[0048] A cavity is opened inside the first hollow tube 223, and the cavity is connected with the first side hole 224. The outer diameter of the first hollow tube 223 is the same as the inner diameter of the cross hole inside the spherical filter valve 209. The first hollow tube 223 is movably installed inside the first sleeve 215. A one-way valve is provided at the connection between the slag discharge pipe 229 and the second sleeve 219. The second hollow tube 225 is movably installed inside the second sleeve 219 and the sealing plate 218.
[0049] It is necessary to further explain that the production process of the tar distillation unit includes: the raw material tar body is dehydrated by the tar centrifuge 1 and then transported to the first tar pump 201, and then enters the first tar pump 201 after being allowed to stand and preheated, and industrial sodium carbonate solution (Na2CO3) with a concentration of 8% to 10% is added to the inlet of the first tar pump 201, and then the dehydrated tar is deslagging by using the ball filter valve 209 inside the first filter 21 and the second filter 22 inside the filter tube 204, and the industrial sodium carbonate solution is added to the first tar pump 201. Sodium solution Na2CO3) neutralizes the acid radical ions produced during the thermal decomposition of the fixed ammonium salt to generate new salts that are not easily decomposed, which are then filtered. The filtered raw tar then passes through the second tar pump 205 and is controlled to be coal tar at a temperature of 20°C to 30°C before entering the spiral heat pipe 206 for reheating. The raw tar inside the spiral heat pipe 206 is heated to 50°C to 60°C by the high-temperature gas inside the evaporation chamber 207 to complete preheating, and then enters the second heater 303 through the second tar pipe 316 for secondary heating.
[0050] like Figure 8 , Fig. 9 , Fig.10 and Fig.11 As shown, the circulating heat conduction mechanism 3 includes a base 301, a first heater 302, a second heater 303, a first smoke exhauster 304, a first heat transfer oil circulation pipe 305, a second heat transfer oil circulation pipe 306, a third heater 307, a fourth heater 308, a second smoke exhauster 309, a first smoke exhaust pipe 310, a first tar pipe 311, a first spiral positioning frame 312, a first heating pipe 313, a first sleeve 314, a second sleeve 315 and a second tar pipe 316. The base 301 is set on the ground surface, and a resistance heater is arranged inside the base 301. The first heater 302 is fixedly installed on the top of the base 301, the second heater 303 is fixedly installed on the top of the first heater 302, the first smoke exhauster 304 is fixedly installed on the top of the second heater 303, and the bottom of the first heater 302 is connected through the first heat transfer oil circulation pipe 30 5 is connected to the third heater 307, a fourth heater 308 is fixedly installed on the top of the third heater 307, a second smoke exhauster 309 is fixedly installed on the top of the fourth heater 308, the second smoke exhauster 309 is connected to the first smoke exhauster 304 through the first smoke exhaust pipe 310, one side of the third heater 307 is connected to the first heater 302 through the second heat transfer oil circulation pipe 306, one side of the second heater 303 is connected to the dehydration tower body 4 through the first tar pipe 311, a first spiral positioning frame 312 is provided inside the first heater 302, a plurality of first heating pipes 313 are fixedly installed on one side of the first spiral positioning frame 312, a first sleeve 314 is fixedly installed on one side of the first spiral positioning frame 312, a second sleeve 315 is provided on one side of the first sleeve 314, and one side of the first sleeve 314 is connected to the second tar pipe 316.
[0051] The circulating heat conduction mechanism 3 also includes a second spiral positioning frame 317, a second heating pipe 318, a first tar circulation pump 319, a third heat transfer oil circulation pipe 320, a heat transfer oil heating chamber 321, a third heating pipe 322, a second tar circulation pump 323 and a fourth heating pipe 324. The second spiral positioning frame 317 is divided into an upper and lower part, and the upper and lower parts of the second spiral positioning frame 317 are both arranged inside the third heater 307. A plurality of second heating pipes 318 are fixedly installed on one side of the second spiral positioning frame 317. The first tar circulation pump 319 is connected to the top of one side of the third heater 307. The third heat transfer oil circulation pipe 32 0 is connected to the bottom of one side of the third heater 307, the first tar circulation pump 319 and the third heat transfer oil circulation pipe 320 are both connected to the heat transfer oil heating bin 321, a third heating pipe 322 is arranged inside the heat transfer oil heating bin 321, a starting end of the third heating pipe 322 passes through the top of the heat transfer oil heating bin 321 and is connected to the second tar circulation pump 323, a tail end of the third heating pipe 322 passes through the bottom of the heat transfer oil heating bin 321 and is connected to the fourth heating pipe 324, the second tar circulation pump 323 is fixedly installed on one side of the top of the tubular furnace 401, and the fourth heating pipe 324 is fixedly installed on one side of the bottom of the tubular furnace 401.
[0052] A partition is provided inside the third heater 307, and the partition divides the third heater 307 into two upper and lower closed cavities. The closed cavity at the top of the third heater 307 is connected to the second heat transfer oil circulation pipe 306 and the first tar circulation pump 319 respectively, and the closed cavity at the bottom of the third heater 307 is connected to the first heat transfer oil circulation pipe 305 and the third heat transfer oil circulation pipe 320 respectively. The first heater 302, the second heater 303, the base 301 and the first sleeve 314 constitute a closed cavity, and the closed cavity is connected to the first heat transfer oil circulation pipe 305 and the second heat transfer oil circulation pipe 306. At the same time, the closed cavity and the closed cavity inside the third heater 307 are filled with heat transfer oil.
[0053] The interior of the thermal oil heating chamber 321 is filled with thermal oil. The third heating pipe 322 is an S-shaped pipe, and the middle section of the third heating pipe 322 is arranged on the outside of the thermal oil heating chamber 321. A temperature and pressure instrument is arranged in the middle section of the third heating pipe 322.
[0054] It needs to be further explained that: after the preheated raw tar enters the interior of the second sleeve 315 and the first sleeve 314 through the second tar pipe 316, the base 301 is started to heat the first heating pipe 313, and then the first heating pipe 313 is used to heat the heat transfer oil between the first sleeve 314 and the first heater 302, so as to evenly heat the raw tar between the second sleeve 315 and the first sleeve 314. The flow route of the raw tar starts from the second tar pipe 316, enters between the first sleeve 314 and the second sleeve 315, and then enters the interior of the second sleeve 315 through the gap between the second sleeve 315 and the base 301, and finally enters the interior of the tubular furnace 401 through the first tar pipe 311 on one side of the top of the second sleeve 315 for dehydration treatment. At the same time, in order to ensure that the thermal oil in the first heater 302, the third heater 307 and the thermal oil heating bin 321 can evenly heat the raw tar, the first tar circulation pump 319 is started to drive the thermal oil to circulate inside the first heater 302, the third heater 307 and the thermal oil heating bin 321.
[0055] like Fig.12 , Fig.13 and Fig.14 As shown, the liquid level regulating mechanism 5 includes a liquid level regulating valve 501, a winding bin 502, a liquid level regulating bin 503, a transfer sealing tube 504, a positioning block 505, a servo motor 506, a second worm 507 and a second worm gear 508. The liquid level regulating valve 501 is arranged on one side of the liquid level regulating tube 405, one side of the liquid level regulating valve 501 is connected to the liquid level regulating bin 503, one side of the liquid level regulating bin 503 is connected to the transfer sealing tube 504, one side of the transfer sealing tube 504 is fixedly installed with the winding bin 502, one side of the winding bin 502 and the liquid level regulating bin 503 is provided with a positioning block 505, the positioning block 505 is fixedly installed on the ground surface, one side of the positioning block 505 is fixedly installed with a servo motor 506, the output end of the servo motor 506 is fixedly installed with a second worm 507, one side of the second worm 507 is meshingly driven with a second worm gear 508, and the second worm gear 508 is movably installed on one side of the positioning block 505.
[0056] The liquid level regulating mechanism 5 also includes a first rotating rod 509, a first pulley 510, a sealing cover 511, a guide groove 512, a belt 513, a second pulley 514, a second rotating rod 515 and a flexible coil 516. The first rotating rod 509 is fixedly installed on one side of the second worm gear 508, one side of the first rotating rod 509 is fixedly sleeved with the first pulley 510, the first pulley 510 is movably installed on one side of the sealing cover 511, the guide groove 512 is opened on one side of the liquid level regulating chamber 503, one side of the first pulley 510 is driven by a belt 513, one side of the belt 513 is driven by a second pulley 514, one side of the second pulley 514 is fixedly sleeved with the second rotating rod 515, and one side of the second rotating rod 515 is provided with a flexible coil 516.
[0057] The flexible coil 516 is wound around the second rotating rod 515 and is made of flexible rubber. The tail section of the flexible coil 516 is fixedly mounted on one side of the second rotating rod 515. The starting end of the flexible coil 516 passes through the channel inside the transfer sealing tube 504 and is fixedly mounted on one side of the first rotating rod 509. The second rotating rod 515 is movably mounted on one side of the positioning block 505.
[0058] It needs to be further explained that: when it is necessary to adjust the liquid level inside the tube furnace 401, the servo motor 506 is started to drive the second worm 507 and the second worm wheel 508 to engage and transmit, thereby driving the first rotating rod 509 to rotate, and then driving the first rotating rod 509 to wind the flexible coil 516. As the first rotating rod 509 rotates and the number of turns of the flexible coil 516 wound by the first rotating rod 509 increases, the raw material tar inside the liquid level regulating bin 503 is gradually discharged, and the liquid level inside the tube furnace 401 increases accordingly; when the servo motor 506 rotates in the opposite direction, the first rotating rod 509 rotates in the opposite direction, thereby driving the first pulley 510, the belt 513, the second rotating rod 515 and the second pulley 514 to rotate in the opposite direction, at this time, the flexible coil 516 inside the liquid level regulating bin 503 is gradually wound up by the second rotating rod 515, the raw material tar inside the liquid level regulating bin 503 gradually increases, the raw material tar inside the tube furnace 401 gradually decreases, and the liquid level decreases accordingly.
[0059] Working principle and use process of the present invention: During the use of the present invention, first, the production process of the tar distillation unit includes: the raw material tar body is dehydrated by the tar centrifuge 1 and then transported to the first tar pump 201, and then enters the first tar pump 201 after standing and preheating, and industrial sodium carbonate solution Na2CO3 with a concentration of 8% to 10% is added to the inlet of the first tar pump 201, and then the dehydrated tar is deslagging through the first filter 21 and the ball filter valve 209 inside the second filter 22 in the filter tube 204. At the same time, industrial sodium carbonate solution (Na2CO3) is used to neutralize the acid radical ions produced during the thermal decomposition of the fixed ammonium salt to generate new salts that are not easy to decompose, which are then filtered. The filtered raw tar then passes through the second tar pump 205 and is controlled to be coal tar at a temperature of 20°C to 30°C before entering the spiral heat pipe 206 for reheating. The raw tar inside the spiral heat pipe 206 is heated to 50°C to 60°C by the high-temperature gas inside the evaporation chamber 207 to complete preheating, and then enters the second heater 303 through the second tar pipe 316 for secondary heating.
[0060] After the preheated raw tar enters the interior of the second sleeve 315 and the first sleeve 314 through the second tar pipe 316, the base 301 is started to heat the first heating pipe 313, and then the first heating pipe 313 is used to heat the heat transfer oil between the first sleeve 314 and the first heater 302, so as to evenly heat the raw tar between the second sleeve 315 and the first sleeve 314. The flow route of the raw tar starts from the second tar pipe 316, enters between the first sleeve 314 and the second sleeve 315, and then enters the interior of the second sleeve 315 through the gap between the second sleeve 315 and the base 301, and finally enters the interior of the tubular furnace 401 through the first tar pipe 311 on one side of the top of the second sleeve 315 for dehydration treatment. At the same time, in order to ensure that the thermal oil in the first heater 302, the third heater 307 and the thermal oil heating bin 321 can evenly heat the raw tar, the first tar circulation pump 319 is started to drive the thermal oil to circulate inside the first heater 302, the third heater 307 and the thermal oil heating bin 321.
[0061] Next, the raw tar entering the tubular furnace 401 through the first tar pipe 311 and the second tar pump 205 is heated to 100°C to 130°C inside the tubular furnace 401, and the moisture and light oil inside the raw tar are discharged from the top of the tubular furnace 401, and then enter the third smoke exhauster 402. Since the pressure inside the third smoke exhauster 402 is lower than that in the tubular furnace 401, the moisture and light oil are quickly evaporated, and the oil and water gas discharged from the top of the third smoke exhauster 402 is cooled by the cooler 404 and then enters the oil-water separator 6 to separate the light oil and water, which are regularly sent to the oil depot or sent for washing and alkali preparation by the light oil separation water pump.
[0062] Finally, when it is necessary to adjust the liquid level inside the tube furnace 401, the servo motor 506 is started to drive the second worm 507 and the second worm wheel 508 to engage and transmit, thereby driving the first rotating rod 509 to rotate, and then driving the first rotating rod 509 to wind the flexible coil 516. As the first rotating rod 509 rotates and the number of turns of the flexible coil 516 wound by the first rotating rod 509 increases, the raw material tar inside the liquid level regulating bin 503 is gradually discharged, and the liquid level inside the tube furnace 401 increases accordingly; when the servo motor 506 rotates in the opposite direction, the first rotating rod 509 rotates in the opposite direction, thereby driving the first pulley 510, the belt 513, the second rotating rod 515 and the second pulley 514 to rotate in the opposite direction, at this time, the flexible coil 516 inside the liquid level regulating bin 503 is gradually wound up by the second rotating rod 515, the raw material tar inside the liquid level regulating bin 503 gradually increases, the raw material tar inside the tube furnace 401 gradually decreases, and the liquid level decreases accordingly.
[0063] Finally, it should be noted that the above are only preferred embodiments of the present invention and are not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments or replace some of the technical features therein by equivalents. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.
Claims
1. A coal tar dehydration device, characterized in that: The invention comprises a tar centrifuge (1), wherein the tar centrifuge (1) is connected to a raw material tar tank through a pipeline, wherein the tar centrifuge (1) is connected to a secondary slag removal mechanism (2) through a pipeline, wherein the secondary slag removal mechanism (2) is connected to a circulating heat conduction mechanism (3) and a dehydration tower body (4) through pipelines, respectively, wherein the circulating heat conduction mechanism (3) is arranged on one side of the dehydration tower body (4), wherein the circulating heat conduction mechanism (3) and the dehydration tower body (4) are connected through pipelines, wherein a liquid level regulating mechanism (5) is arranged on one side of the dehydration tower body (4), wherein the dehydration tower body (4) is connected to an oil-water separator (6) through a pipeline, wherein the dehydration tower body (6) is connected to an oil-water separator (6) through a pipeline, wherein the oil-water separator (6) is connected to the oil-water separator (6) through a pipeline. The main body (4) is connected to the fractionation tower body (7) through a pipeline. The dehydration tower main body (4) comprises a tubular furnace (401), a third smoke exhauster (402), a fourth smoke exhauster (403), a cooler (404) and a liquid level regulating pipe (405). The tubular furnace (401) is arranged on the ground surface. The top of the tubular furnace (401) is provided with the third smoke exhauster (402). One side of the third smoke exhauster (402) is connected to the fourth smoke exhauster (403). One side of the fourth smoke exhauster (403) is provided with a cooler (404). The bottom of the tubular furnace (401) is provided with a liquid level regulating pipe (405). A secondary slag removal mechanism (2), the secondary slag removal mechanism (2) comprising a first filter (21), a second filter (22), a bracket (230), a first tar pump (201), a pre-dehydration tower body (202), a guide groove (203), a filter tube (204), a second tar pump (205), a spiral heat conducting tube (206), an evaporation chamber (207) and a vacuum unit (208), the first tar pump (201) being fixedly mounted on one side of a tar outlet pipe of a tar centrifuge (1), one side of the first tar pump (201) being connected to the pre-dehydration tower body (202), a guide groove (203) being provided at the bottom of the pre-dehydration tower body (202), the bottom of the guide groove (203) being connected to the filter tube (204), and the bottom of the guide groove (203) being connected to the filter tube (204). ), a one-way valve is arranged at the connection between the guide groove (203) and the filter tube (204), one side of the filter tube (204) is connected to a second tar pump (205), the top of the second tar pump (205) is connected to a spiral heat-conducting pipe (206), the spiral heat-conducting pipe (206) is arranged inside an evaporation chamber (207), the evaporation chamber (207) is fixedly mounted on the top of a bracket (230), one side of the evaporation chamber (207) is provided with a vacuum unit (208), the filter tube (204) is provided with a first filter (21) and a second filter (22), the first filter (21) and the second filter (22) both comprising a spherical filter valve (209), a first worm gear (210), a first worm gear (211), a first worm gear (212), a first worm gear (213), a first worm gear (214), a first worm gear (215), a first worm gear (216), a first worm gear (217), a first worm gear (218), a first worm gear (219), a first worm gear (220), a first worm gear (2211), a first worm gear (222), a first worm gear (219), a first worm gear (211), a first worm gear (212), a first worm gear (213), a first worm gear (214), a first worm gear (215), a first worm gear (216), a first worm gear (217), a first worm gear (218), a first worm gear (219), a first worm gear (219), a first worm gear (211), a first worm gear (212), a first worm gear (213), a first worm gear (214), a first worm gear (215), a first worm A worm (211), a rotating disk (212), a bearing sleeve (213), a transfer tube (214), a first sleeve (215), a sealing block (216), a first spring (217), a sealing plate (218) and a second sleeve (219); the spherical filter valve (209) is movably mounted inside the filter tube (204); a first worm wheel (210) is fixedly mounted on the top of the spherical filter valve (209); a first worm (211) is meshed and driven on one side of the first worm wheel (210); a rotating disk (212) is fixedly mounted on one side of the first worm (211); the first worm (211) is movably mounted inside the bearing sleeve (213); the bearing sleeve (213) is fixedly mounted on the transfer tube (214); ), the transfer tube (214) is connected to the filter tube (204), and the transfer tube (214) is symmetrically arranged with the filter tube (204) as the center, a first sleeve (215) is fixedly installed inside the transfer tube (214), a sealing block (216) is movably installed on one side of the first sleeve (215), an evaporation chamber (207) is arranged on one side of the sealing block (216), a starting end of the first spring (217) is fixedly connected to one side of the sealing block (216), a tail end of the first spring (217) is fixedly connected to one side of a sealing plate (218), the sealing plate (218) is fixedly installed inside the transfer tube (214), and one side of the sealing plate (218) is connected to a second sleeve (219); A circulating heat conduction mechanism (3), the circulating heat conduction mechanism (3) comprising a base (301), a first heater (302), a second heater (303), a first smoke exhauster (304), a first heat transfer oil circulation pipe (305), a second heat transfer oil circulation pipe (306), a third heater (307), a fourth heater (308), a second smoke exhauster (309), a first smoke exhaust pipe (310), a first tar pipe (311), a first spiral positioning frame (312), a first heating pipe (313), a first sleeve (3 14), a second sleeve (315) and a second tar pipe (316), the base (301) is arranged on the ground surface, a resistance heater is arranged inside the base (301), a first heater (302) is fixedly installed on the top of the base (301), a second heater (303) is fixedly installed on the top of the first heater (302), a first smoke exhauster (304) is fixedly installed on the top of the second heater (303), and the bottom of the first heater (302) is connected to the first heat transfer oil circulation pipe ( The third heater (305) is connected to the third heater (307), a fourth heater (308) is fixedly installed on the top of the third heater (307), a second smoke exhauster (309) is fixedly installed on the top of the fourth heater (308), the second smoke exhauster (309) is connected to the first smoke exhauster (304) through the first smoke exhaust pipe (310), one side of the third heater (307) is connected to the first heater (302) through the second heat transfer oil circulation pipe (306), and one side of the second heater (303) is connected to the first heater (302) through the second heat transfer oil circulation pipe (306). The first heater (302) is connected to the dehydration tower body (4) through a first tar pipe (311); a first spiral positioning frame (312) is arranged inside the first heater (302); a plurality of first heating pipes (313) are fixedly installed on one side of the first spiral positioning frame (312); a first sleeve (314) is fixedly installed on one side of the first spiral positioning frame (312); a second sleeve (315) is arranged on one side of the first sleeve (314); and a second tar pipe (316) is connected to one side of the first sleeve (314).
2. A coal tar dehydration device according to claim 1, characterized in that: The first filter (21) and the second filter (22) further comprise a hydraulic cylinder (220), a cross bar (221), a piston column (222), a first hollow tube (223), a first side hole (224), a second hollow tube (225), a second side hole (226), a second spring (227), a third sleeve (228) and a slag discharge pipe (229), wherein the hydraulic cylinder (220) is fixedly mounted on one side of the bracket (230), a cross bar (221) is fixedly mounted on one side of the hydraulic cylinder (220), a piston column (222) is fixedly connected to one side of the cross bar (221), and the piston column (222) is fixedly mounted on one side of the cross bar (221). A first hollow tube (223) is fixedly connected to one side of the second hollow tube (222), a first side hole (224) is opened on one side of the first hollow tube (223), the first hollow tube (223) passes through the spherical filter valve (209), and is movably connected to one side of the second hollow tube (225), a second side hole (226) is opened at the bottom of the second hollow tube (225), a second spring (227) is fixedly connected to one side of the second hollow tube (225), the second spring (227) is arranged inside the third sleeve (228), and the bottom of the second side hole (226) is connected to a slag discharge pipe (229).
3. A coal tar dehydration device according to claim 1, characterized in that: The spherical filter valve (209) is provided with a cross through hole inside, a screen is provided inside one of the through holes, and the pores of the screen inside the spherical filter valve (209) on the first filter (21) are larger than the pores of the screen inside the spherical filter valve (209) on the second filter (22), and the sealing plate (218) is fixedly installed inside the transfer tube (214).
4. A coal tar dehydration device according to claim 2, characterized in that: A cavity is provided inside the first hollow tube (223), and the cavity is communicated with the first side hole (224). The outer diameter of the first hollow tube (223) is the same as the inner diameter of the cross hole inside the spherical filter valve (209). The first hollow tube (223) is movably installed inside the first sleeve (215). A one-way valve is provided at the connection between the slag discharge pipe (229) and the second sleeve (219). The second hollow tube (225) is movably installed inside the second sleeve (219) and the sealing plate (218).
5. A coal tar dehydration device according to claim 1, characterized in that: The circulating heat conduction mechanism (3) further comprises a second spiral positioning frame (317), a second heating pipe (318), a first tar circulation pump (319), a third heat transfer oil circulation pipe (320), a heat transfer oil heating chamber (321), a third heating pipe (322), a second tar circulation pump (323) and a fourth heating pipe (324); the second spiral positioning frame (317) is divided into an upper and a lower part, and the upper and lower parts of the second spiral positioning frame (317) are both arranged inside the third heater (307); a plurality of second heating pipes (318) are fixedly mounted on one side of the second spiral positioning frame (317); the first tar circulation pump (319) is connected to the top of one side of the third heater (307); the third heat transfer oil circulation pipe (320) ) is connected to the bottom of one side of the third heater (307), the first tar circulation pump (319) and the third heat transfer oil circulation pipe (320) are both connected to the heat transfer oil heating bin (321), a third heating pipe (322) is arranged inside the heat transfer oil heating bin (321), the starting end of the third heating pipe (322) passes through the top of the heat transfer oil heating bin (321) and is connected to the second tar circulation pump (323), the tail end of the third heating pipe (322) passes through the bottom of the heat transfer oil heating bin (321) and is connected to the fourth heating pipe (324), the second tar circulation pump (323) is fixedly installed on one side of the top of the tubular furnace (401), and the fourth heating pipe (324) is fixedly installed on one side of the bottom of the tubular furnace (401).
6. A coal tar dehydration device according to claim 5, characterized in that: A partition is provided inside the third heater (307), and the partition divides the third heater (307) into two upper and lower closed cavities. The closed cavity at the top of the third heater (307) is respectively connected to the second heat transfer oil circulation pipe (306) and the first tar circulation pump (319), and the closed cavity at the bottom of the third heater (307) is respectively connected to the first heat transfer oil circulation pipe (305) and the third heat transfer oil circulation pipe (320). The first heater (302), the second heater (303), the base (301) and the first sleeve (314) constitute a closed cavity, and the closed cavity is connected to the first heat transfer oil circulation pipe (305) and the second heat transfer oil circulation pipe (306). At the same time, the closed cavity and the closed cavity inside the third heater (307) are filled with heat transfer oil.
7. A coal tar dehydration device according to claim 5, characterized in that: The interior of the thermal oil heating bin (321) is filled with thermal oil, the third heating pipe (322) is an S-shaped pipe, the middle section of the third heating pipe (322) is arranged on the outside of the thermal oil heating bin (321), and a temperature and pressure instrument is arranged in the middle section of the third heating pipe (322).
8. A coal tar dehydration device according to claim 1, characterized in that: The liquid level regulating mechanism (5) comprises a liquid level regulating valve (501), a winding bin (502), a liquid level regulating bin (503), a transfer sealing pipe (504), a positioning block (505), a servo motor (506), a second worm (507) and a second worm wheel (508); the liquid level regulating valve (501) is arranged on one side of the liquid level regulating pipe (405); one side of the liquid level regulating valve (501) is connected to the liquid level regulating bin (503); one side of the liquid level regulating bin (503) is connected to the transfer sealing pipe (504); the transfer sealing pipe (504) is connected to the liquid level regulating bin (503); 04), a winding bin (502) is fixedly installed on one side of the winding bin (502) and the liquid level regulating bin (503), a positioning block (505) is provided on one side of the positioning block (505), the positioning block (505) is fixedly installed on the ground surface, a servo motor (506) is fixedly installed on one side of the positioning block (505), a second worm (507) is fixedly installed on the output end of the servo motor (506), one side of the second worm (507) is meshed with a second worm wheel (508), and the second worm wheel (508) is movably installed on one side of the positioning block (505).
9. A coal tar dehydration device according to claim 1, characterized in that: The liquid level regulating mechanism (5) further comprises a first rotating rod (509), a first leather wheel (510), a sealing cover (511), a guide groove (512), a belt (513), a second leather wheel (514), a second rotating rod (515) and a flexible coiled material (516); the first rotating rod (509) is fixedly mounted on one side of the second worm gear (508); the first leather wheel (510) is fixedly sleeved on one side of the first rotating rod (509); the first leather wheel (510) is movably mounted on one side of the sealing cover (511); the guide groove (512) is provided on one side of the liquid level regulating chamber (503); the first leather wheel (510) is driven by a belt (513) on one side of the belt (513); the second leather wheel (514) is driven by a second rotating rod (515) on one side of the second leather wheel (514); the second rotating rod (515) is fixedly sleeved on one side of the second rotating rod (515); and the flexible coiled material (516) is provided on one side of the second rotating rod (515).
10. A coal tar dehydration device according to claim 9, characterized in that: The flexible coil (516) is wound around the second rotating rod (515) and is made of flexible rubber. The tail section of the flexible coil (516) is fixedly mounted on one side of the second rotating rod (515). The starting end of the flexible coil (516) passes through the channel inside the transfer sealing tube (504) and is fixedly mounted on one side of the first rotating rod (509). The second rotating rod (515) is movably mounted on one side of the positioning block (505).