Hydrocarbon distillation recovery apparatus

Abstract

The present application provides a kind of hydrocarbon distillation recovery device, distillation recovery device is connected with the cleaning chamber for being used to clean the workpiece to be cleaned, including for the distillation recovery of hydrocarbon cleaning agent and oil, the distillation recovery mechanism includes the distillation assembly for separating hydrocarbon cleaning agent and oil and the recovery assembly for recovering the hydrocarbon cleaning agent after distillation separation.The present application can realize the distillation separation of the mixture of hydrocarbon cleaning agent and oil by distillation assembly, and realize the classified recovery of hydrocarbon cleaning agent and oil by recovery device, carry out unified collection and reuse, and the contaminated hydrocarbon after cleaning is distilled again, efficiency is higher, gasoline loss rate is low, more safe and reliable.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of distillation recovery equipment for cleaning machines, in particular to a hydrocarbon distillation recovery device. BACKGROUND

[0002] In the traditional aviation engine cleaning process, aviation gasoline is generally used for cleaning workpieces, mainly to clean the attached particulate matter and various greases of the workpieces; due to the low flash point and flammability of gasoline, the workpieces are dried by natural evaporation after cleaning, and the gasoline after each cleaning does not have the characteristics of recycling, resulting in unnecessary waste of gasoline, which is low in efficiency, high in gasoline loss rate and high in danger. SUMMARY

[0003] Therefore, the present application provides a hydrocarbon distillation recovery device, which can use the contaminated hydrocarbon after cleaning again by distillation in cooperation with a customized hydrocarbon solvent, which is more efficient, has a low gasoline loss rate, and is safer and more reliable.

[0004] To solve the above technical problems, the present application provides a hydrocarbon distillation recovery device, which is in communication with a cleaning chamber for cleaning workpieces, and includes a distillation recovery mechanism for distilling and recovering carbon hydrocarbon cleaning agent and oil, the distillation recovery mechanism includes a distillation assembly for separating carbon hydrocarbon cleaning agent and oil, and a recovery assembly for recovering carbon hydrocarbon cleaning agent after distillation and separation, the present application can realize distillation and separation of the mixture of carbon hydrocarbon cleaning agent and oil by the distillation assembly, and realize classified recovery of carbon hydrocarbon cleaning agent and oil by the recovery device, for unified collection and reuse, and the contaminated hydrocarbon after cleaning can be used again by distillation, which is more efficient, has a low gasoline loss rate, and is safer and more reliable.

[0005] The distillation assembly includes a distillation kettle and a heater arranged at the bottom of the distillation kettle for heating the distillation kettle, the liquid inlet of the distillation kettle is communicated with a carbon hydrocarbon cleaning agent storage tank through a pipeline, the carbon hydrocarbon cleaning agent storage tank is used for collecting the distilled carbon hydrocarbon cleaning agent, and the clean cleaning agent distilled out is introduced into the cleaning chamber again to participate in the cleaning work of the workpieces in the cleaning chamber, which is more energy-saving and environmentally friendly.

[0006] The carbon hydrogen cleaning agent storage tank includes a rough cleaning storage tank and a fine cleaning storage tank, a first liquid inlet is arranged at the top of the rough cleaning storage tank, a first overflow port is arranged on the outer side wall of the upper portion of the rough cleaning storage tank, the first overflow port and the liquid inlet of the distillation kettle are connected in communication through a pipeline, a first liquid outlet is arranged at the bottom of the rough cleaning storage tank, a second liquid inlet is arranged on the outer side wall of one side of the fine cleaning storage tank, a second overflow port is arranged at the other end of the fine cleaning storage tank, a second liquid outlet is arranged at the bottom of the fine cleaning storage tank, the rough cleaning liquid reaching a certain liquid level height in the rough cleaning storage tank can be guided into the distillation kettle through the first overflow port, and the circulating and repeated distillation operation of the rough cleaning liquid is continued, so that the utilization efficiency of the rough cleaning liquid is greatly improved, and the economy, environmental protection and energy saving are more.

[0007] The recovery assembly includes a condenser connected in communication with the liquid outlet of the distillation kettle for condensing and liquefying the gaseous carbon hydrogen cleaning agent distilled from the distillation kettle, the liquid outlet of the condenser is connected in communication with the second liquid inlet through a pipeline, and the bottom of the distillation kettle is provided with an oil collecting tank for collecting the split oil, and the pipeline connected in communication with the distillation kettle is provided with an on-off control valve, so that the residual oil after distillation can be collected into the oil collecting tank for unified collection and recycling, which is more convenient and energy-saving.

[0008] The bottom of the cleaning bin is provided with a spray liquid inlet main pipe, a three-way control valve is arranged at the water inlet of the spray liquid inlet main pipe, the main pipeline of the three-way control valve is connected in communication with the water inlet of the spray liquid inlet main pipe, one branch pipeline of the three-way control valve is connected in communication with the first liquid outlet, and the other branch pipeline of the three-way control valve is connected in communication with the second liquid outlet, so that the clean carbon hydrogen cleaning agent after distillation can be smoothly guided into the cleaning bin through the spray liquid inlet main pipe and the three-way control valve to participate in the cleaning operation of the workpiece, the use frequency and efficiency of the carbon hydrogen cleaning agent are improved, and the energy saving and convenience are more. Generally, the distillation recovery mechanism cooperates with the customized carbon hydrogen solvent, so that the contaminated carbon hydrogen after cleaning can be distilled and used again, and the regular replacement is basically realized once every 2-6 months (the actual need is determined according to the input clean state of the workpiece and the daily cleaning amount).

[0009] The pipeline, which is connected between the distillation kettle and the cleaning bin, is provided with a vacuum pump, the air outlet of the vacuum pump is connected with the cleaning bin through a pipeline, and the exhaust port of the vacuum pump is connected with the liquid inlet of the condenser through a pipeline.

[0010] The pipeline, which is connected between the first overflow port and the liquid inlet of the distillation kettle, is sequentially provided with a liquid pumping pump and a filter.

[0011] The pipeline, which is connected between the first overflow port and the cleaning bin, is provided with a circulating pump, the liquid pumping port of the circulating pump is connected with the pipeline, which is connected between the first overflow port on the side close to the cleaning bin and the cleaning bin, and the liquid discharging port of the circulating pump is connected with the pipeline, which is connected between the first overflow port on the side far away from the cleaning bin and the cleaning bin.

[0012] The inside of the coarse cleaning liquid storage tank and the fine cleaning liquid storage tank is provided with a liquid level meter.

[0013] The inside of the condenser is provided with a regeneration tank for collecting liquefied carbon hydrogen cleaning agent.

[0014] Compared with the prior art, the present application has at least one of the following beneficial technical effects:

[0015] 1. When using this invention, the door of the cleaning chamber is sealed. At this time, the temperature of the parts being cleaned is 50℃±5℃. The 120℃ vaporized hydrocarbon generated by the distillation kettle is introduced into the cleaning chamber through the second outlet of the fine cleaning liquid tank to perform a 5-minute steam bath cleaning on the workpiece, so that the pore diameter, narrow gap and surface temperature of the cleaned parts reach 90℃±5℃.

[0016] The cleaning chamber is evacuated to -98 kPa through the exhaust pipe 25 connected to the vacuum pump. At this point, based on the boiling relationship of hydrocarbons under different pressures, the boiling point (vaporization) of hydrocarbons is 60-65℃, while the temperature of the parts being cleaned is 90℃±5℃. The hydrocarbons adhering to the surface of the workpiece rapidly vaporize and are continuously discharged outward through the vacuum pump's suction pipe, guided to the condenser for condensation, ultimately generating a clean liquid hydrocarbon cleaning agent. This agent is then divided into two streams: one stream flows through the outlet of the cleaning chamber into the fine cleaning storage tank, while the other stream is directly condensed in the condenser and flows into the regeneration tank for collection.

[0017] 2. This invention connects the vacuum pump's extraction port to the cleaning chamber via a pipeline, and the vacuum pump's exhaust port to the condenser's inlet via a pipeline. Activating the vacuum pump extracts air from the cleaning chamber, reducing its concentration and lowering the boiling point of the hydrocarbon solvents circulating in the distillation recovery mechanism. This not only reduces heat loss from heating the hydrocarbon solvents and oil in the distillation vessel but also lowers the temperature of the circulating hydrocarbon cleaning solvents, preventing damage to the workpiece from the high-temperature distillation solvents. This achieves efficient cleaning while effectively protecting the workpiece, offering greater convenience and applicability to various altitudes and temperatures. Compared to traditional distillation recovery methods, it is more energy-efficient, saving fuel or energy required to heat the cleaning agent and grease in the distillation vessel to boiling and vaporizing, resulting in higher distillation efficiency.

[0018] 3. This invention can separate the mixture of hydrocarbon cleaning agent and oil by distillation component, and can classify and recycle hydrocarbon cleaning agent and oil by recycling device for unified collection and reuse. The contaminated hydrocarbon after cleaning can be distilled again for reuse, which is more efficient, has a lower gasoline loss rate, and is safer and more reliable.

[0019] 4. This invention can guide the coarse washing liquid that has reached a certain liquid level in the coarse washing storage tank to the distillation kettle through the first overflow port, so as to continue the circulation and repeated distillation of the coarse washing liquid, which greatly improves the utilization efficiency of the coarse washing liquid and is more economical, environmentally friendly and energy-saving.

[0020] 5. This invention enables the coarse washing liquid from the first outlet to be introduced into the cleaning chamber for coarse washing of the workpiece through the forward rotation of the circulating pump, or the coarse washing liquid after cleaning in the cleaning chamber to be reintroduced into the coarse washing storage tank for collection through the reverse rotation of the circulating pump, thus realizing the recycling and reuse of the coarse washing liquid after cleaning and greatly improving the utilization efficiency of the coarse washing liquid. Attached Figure Description

[0021] Fig. 1 This is a schematic diagram of the hydrocarbon distillation recovery device of the present invention;

[0022] Fig. 2 This is a table showing the relationship between pressure, vacuum level, and boiling point in this invention.

[0023] Explanation of reference numerals in the attached drawings: 100, Distillation recovery mechanism; 110, Distillation assembly; 111, Distillation kettle; 112, Heater; 120, Recovery assembly; 121, Condenser; 122, Vacuum pump; 130, Hydrocarbon cleaning agent storage tank; 131, Coarse wash storage tank; 132, Fine wash storage tank; 133, First inlet; 134, First overflow port; 135, First outlet; 136, Second inlet; 137, Second overflow port; 138, Second outlet; 140, Cleaning chamber; 141, Spray inlet main pipe; 142, Three-way control valve; 200, Pump; 300, Circulation pump; 400, Filter. Detailed Implementation

[0024] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the following will be described in conjunction with the accompanying drawings of the embodiments of the present invention. Figs. 1-2 The technical solutions of the embodiments of the present invention will be clearly and completely described herein. Obviously, the described embodiments are only a part of the embodiments of the present invention, and not all of them. All other embodiments obtained by those skilled in the art based on the described embodiments of the present invention are within the scope of protection of the present invention.

[0025] like Figs. 1-2 As shown: This embodiment provides a hydrocarbon distillation recovery device, including a distillation recovery mechanism 100 for distilling and recovering hydrocarbon cleaning agents and oil. The distillation recovery mechanism 100 includes a distillation component 110 for separating hydrocarbon cleaning agents and oil and a recovery component 120 for recovering the distilled hydrocarbon cleaning agents. This invention can achieve distillation separation of the mixture of hydrocarbon cleaning agents and oil through the distillation component 110, and achieve classified recovery of hydrocarbon cleaning agents and oil through the recovery device, so as to collect and reuse them in a unified manner. The contaminated hydrocarbons after cleaning can be distilled again for reuse, which is more efficient, has a lower gasoline loss rate, and is safer and more reliable.

[0026] The distillation assembly 110 comprises a distillation kettle 111 and a heater 112 arranged at the bottom of the distillation kettle 111 for heating the distillation kettle 111, and the liquid inlet of the distillation kettle 111 is communicated with the hydrocarbon cleaning agent storage tank 130 through a pipeline, the hydrocarbon cleaning agent storage tank 130 is used for collecting the distilled hydrocarbon cleaning agent, and the distilled clean cleaning agent is introduced into the cleaning chamber 140 again to participate in the cleaning work of the workpiece in the cleaning chamber 140, which is more energy-saving and environment-friendly.

[0027] The hydrocarbon cleaning agent storage tank 130 comprises a rough cleaning storage tank 131 and a fine cleaning storage tank 132, the top of the rough cleaning storage tank 131 is provided with a first liquid inlet 133, the upper outer side wall of the rough cleaning storage tank 131 is provided with a first overflow port 134, the first overflow port 134 and the liquid inlet of the distillation kettle 111 are communicated through a pipeline, the bottom of the rough cleaning storage tank 131 is provided with a first liquid outlet 135, the outer side wall of the fine cleaning storage tank 132 is provided with a second liquid inlet 136, the other side end of the fine cleaning storage tank 132 is provided with a second overflow port 137, and the bottom of the fine cleaning storage tank 132 is provided with a second liquid outlet 138. The rough cleaning liquid in the rough cleaning storage tank 131 reaching a certain liquid level height can be guided into the distillation kettle 111 through the first overflow port 134, and the circulating and repeated distillation work of the rough cleaning liquid is continued, which greatly improves the utilization efficiency of the rough cleaning liquid and is more economical, environment-friendly and energy-saving.

[0028] The recovery assembly 120 comprises a condenser 121 for condensing and liquefying the gaseous hydrocarbon cleaning agent distilled from the distillation kettle 111, which is communicated with the liquid outlet of the distillation kettle 111, and the liquid outlet of the condenser 121 and the second liquid inlet 136 are communicated through a pipeline, and the bottom of the distillation kettle 111 is provided with an oil collecting tank for collecting the separated oil, and a switch control valve is arranged on the pipeline communicated with the distillation kettle 111, so that the residual oil after distillation can be collected into the oil collecting tank for unified collection and recycling, which is more convenient and energy-saving.

[0029] The bottom of the cleaning bin 140 is provided with a spray liquid inlet main pipe 141, a three-way control valve 142 is arranged at the water inlet of the spray liquid inlet main pipe 141, the main pipe of the three-way control valve 142 is connected with the water inlet of the spray liquid main pipe, one branch pipe of the three-way control valve 142 is connected with the first liquid outlet 135, and the other branch pipe of the three-way control valve 142 is connected with the second liquid outlet 138. Through the action of the spray liquid main pipe and the three-way control valve 142, the clean carbon hydrogen cleaning agent after distillation can be smoothly guided into the cleaning bin 140 to participate in the cleaning work of the workpiece, the use frequency and efficiency of the carbon hydrogen cleaning agent are improved, and the carbon hydrogen cleaning agent is more energy-saving and convenient. Generally, the distillation recovery mechanism 100 cooperates with the customized carbon hydrogen solvent, so that the contaminated carbon hydrogen after cleaning can be distilled and used again, and the regular replacement is basically realized once every 2-6 months (the actual need is determined according to the clean state of the workpiece and the daily cleaning amount).

[0030] A vacuum pump 122 is arranged on the pipeline connected with the cleaning bin 140, the air outlet of the vacuum pump 122 is connected with the cleaning bin 140 through a pipeline, and the liquid inlet of the condenser 121 is connected with the air outlet of the vacuum pump 122 through a pipeline. By starting the vacuum pump 122, the air in the cleaning bin 140 can be extracted, the air concentration in the cleaning bin 140 is reduced, the boiling point of the carbon hydrogen solvent participating in the circulation of the whole distillation recovery mechanism 100 is reduced, the loss of heat required for heating the carbon hydrogen solvent and oil in the distillation kettle 111 is reduced, and the temperature of the carbon hydrogen cleaning solvent participating in the circulation is also reduced to a certain extent, so that the damage of the high-temperature carbon hydrogen solvent to the workpiece is avoided, the workpiece is effectively cleaned, the workpiece is effectively protected, and the workpiece is more convenient.

[0031] The pipeline between the first overflow port 134 and the liquid inlet of the distillation kettle 111 is sequentially provided with a liquid pumping pump 200 and a filter 400. Through the action of the liquid pumping pump 200 and the filter 400, the rough cleaning liquid flowing into the pipeline between the first liquid outlet 135 of the rough cleaning liquid storage tank 131 and the liquid inlet of the distillation kettle 111 can be filtered and used, the purity of the rough cleaning liquid entering the distillation kettle 111 is improved, and the safety and environmental protection are more safe and environmentally friendly.

[0032] A circulating pump 300 is arranged on the pipeline connecting the first liquid outlet 135 and the cleaning bin 140, the suction port of the circulating pump 300 is connected with the pipeline connecting the first liquid outlet 135 on the side close to the cleaning bin 140 and the cleaning bin 140, and the discharge port of the circulating pump 300 is connected with the pipeline connecting the first liquid outlet 135 on the side far away from the cleaning bin 140 and the cleaning bin 140, the rough cleaning liquid on the side of the first liquid outlet 135 can be introduced into the cleaning bin 140 to perform the rough cleaning operation of the workpiece through the forward rotation of the circulating pump 300, or the rough cleaning liquid cleaned in the cleaning bin 140 can be introduced into the rough cleaning liquid storage tank 131 to be collected through the reverse rotation of the circulating pump 300, the recycled rough cleaning liquid after cleaning is realized, and the use efficiency of the rough cleaning liquid is greatly improved.

[0033] The rough cleaning liquid storage tank 131 and the fine cleaning liquid storage tank 132 are both internally provided with liquid level meters, the liquid level of the hydrocarbon cleaning agent in the rough cleaning liquid storage tank 131 and the fine cleaning liquid storage tank 132 can be monitored through the liquid level meters, the hydrocarbon cleaning agent in the rough cleaning liquid storage tank 131 and the fine cleaning liquid storage tank 132 can be discharged and collected in time according to the liquid level height, and the device is more intelligent and convenient.

[0034] The condenser 121 is internally provided with a regeneration tank for collecting the liquefied hydrocarbon cleaning agent, the liquefied hydrocarbon cleaning agent can be collected and recycled through the regeneration tank, and the device is more energy-saving and environment-friendly.

[0035] The use method of the present application is as follows:

[0036] First of all, it should be clear that the distillation recovery device involved in the present application is mainly used for cleaning work of some precise parts in machining, and the cleaning medium used is hydrocarbon cleaning agent, and the following two points need to be clarified here:

[0037] Firstly, the bin door of the cleaning bin 140 is in a sealed state after the completion of the front cleaning process of the device, at this time, the temperature of the cleaned parts is 50℃±5℃, the gasified hydrocarbon at 120℃ generated by the distillation kettle 111 is introduced into the cleaning bin 140 through the second liquid outlet 138 of the fine cleaning liquid storage tank 132, and the workpiece is subjected to a 5min steam bath washing, so that the temperature of the hole diameter, narrow gap and surface of the cleaned part reaches 90℃±5℃;

[0038] Secondly, the vacuum pump 122 is started to vacuumize the cleaning tank 140 to -98 Kpa, at this time, according to the boiling relationship of hydrocarbon at different air pressures, the boiling point (gasification) of hydrocarbon is 60-65℃, and the temperature of the cleaning parts is 90℃±5℃, the hydrocarbon attached to the surface of the workpiece is quickly gasified and continuously discharged outward through the exhaust pipe of the vacuum pump 122 and guided into the condenser 121 for condensation, finally generating clean liquid hydrocarbon cleaning agent, and being divided into two paths, one of which flows into the fine cleaning liquid storage tank 132 through the liquid outlet of the cleaning tank 140, and the other is directly condensed in the condenser 121 and flows into the regeneration tank for collection.

[0039] The use method of the present application is described in detail taking the distillation recovery process of the parts used in the aviation aircraft as an example, when the workpiece needs to be cleaned,

[0040] The vacuum pump 122 is started to vacuumize the cleaning tank 140 to -98 Kpa, at this time, according to the boiling relationship of hydrocarbon at different air pressures, the boiling point (gasification) of hydrocarbon is 60-65℃, and then the vacuum pump 122 is closed, then the mixture of hydrocarbon cleaning agent and oil in the distillation kettle 111 is heated by electric heating or gas heating, when the temperature in the distillation kettle 111 reaches 60 degrees or above, the vaporized hydrocarbon cleaning agent will flow into the condenser 121 through the liquid outlet of the distillation kettle 111 and be condensed, the liquid hydrocarbon cleaning agent after condensation will flow into the fine cleaning liquid storage tank 132 through the outlet of the condenser 121, then the valve of the branch connected with the liquid inlet of the spray main pipe is opened, at this time, the clean hydrocarbon cleaning agent in the fine cleaning tank will flow into the cleaning tank 140 to clean the workpiece in the cleaning tank 140, after cleaning, the forward rotation of the circulating pump 300 can realize the introduction of the coarse cleaning liquid on the side of the first liquid outlet 135 into the cleaning tank 140 for the coarse cleaning of the workpiece, and the reverse rotation of the circulating pump 300 can realize the re-introduction of the coarse cleaning liquid cleaned in the cleaning tank 140 into the coarse cleaning liquid storage tank 131 for collection, realizing the recovery and reuse of the cleaned coarse cleaning liquid, greatly improving the use efficiency of the coarse cleaning liquid, if the liquid level meter detects that the liquid level in the coarse cleaning liquid storage tank 131 is too high, the liquid pump 200 is started, at this time, the excess coarse cleaning liquid will be pumped into the distillation kettle 111 after being filtered by the liquid pump 200 and the filter 400 to continue the distillation and participate in the distillation recovery of the hydrocarbon cleaning agent, the present application can realize the distillation separation of the mixture of hydrocarbon cleaning agent and oil through the distillation assembly 110, and realize the classification recovery of the hydrocarbon cleaning agent and oil through the recovery device, for unified collection and reuse, and the contaminated hydrocarbon after cleaning is distilled again for use, which is more efficient, has low gasoline consumption rate, and is safer and more reliable.

[0041] In addition, it needs to be explained that in the description of the present application, unless otherwise explicitly specified and limited, the terms "mounting", "connection", "connecting" should be understood broadly, for example, can be fixed connection, can also be detachable connection, or integrally connected; can be mechanical connection, can also be electrical connection; can be directly connected, can also be indirectly connected through an intermediate medium, can be the communication inside two elements. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0042] The above is the preferred embodiment of the present application, it should be pointed out that for those skilled in the art, without departing from the principles of the present application, a number of improvements and refinements can also be made, which should be considered as the protection scope of the present application.

Claims

1. A hydrocarbon distillation recovery apparatus, wherein the distillation recovery apparatus is connected to a cleaning chamber (140) for cleaning workpieces to be cleaned, characterized in that: It includes a distillation recovery unit (100) for distilling and recovering hydrocarbon cleaning agents and oils, the distillation recovery unit (100) including a distillation component (110) for separating hydrocarbon cleaning agents and oils and a recovery component (120) for recovering hydrocarbon cleaning agents after distillation and separation. The distillation assembly (110) includes a distillation vessel (111) and a heater (112) disposed at the bottom of the distillation vessel (111) for heating the distillation vessel (111). The liquid inlet of the distillation vessel (111) is connected to a hydrocarbon cleaning agent storage tank (130) through a pipe. The hydrocarbon cleaning agent storage tank (130) includes a coarse cleaning storage tank (131) and a fine cleaning storage tank (132). The top of the coarse cleaning storage tank (131) is provided with a first inlet (133), and the upper outer wall of the coarse cleaning storage tank (131) is provided with a first overflow port (134). The first overflow port (134) and the inlet of the distillation vessel (111) are connected by a pipe. The bottom of the coarse cleaning storage tank (131) is provided with a first outlet (135). The outer wall of one side of the fine cleaning storage tank (132) is provided with a second inlet (136), the other end of the fine cleaning storage tank (132) is provided with a second overflow port (137), and the bottom of the fine cleaning storage tank (132) is provided with a second outlet (138). A spray liquid inlet main pipe (141) is provided at the bottom of the cleaning chamber (140). A three-way control valve (142) is provided at the inlet of the spray liquid inlet main pipe (141). The main pipe of the three-way control valve (142) is connected to the inlet of the spray liquid main pipe. One branch pipe of the three-way control valve (142) is connected to the first outlet (135). The other branch pipe of the three-way control valve (142) is connected to the second outlet (138). A vacuum pump (122) is installed on the pipe connecting the distillation vessel (111) and the cleaning chamber (140). The air extraction port of the vacuum pump (122) is connected to the cleaning chamber (140) through a pipe, and the exhaust port of the vacuum pump (122) is connected to the liquid inlet of the condenser (121) through a pipe. A liquid pump (200) and a filter (400) are sequentially installed on the pipe between the first overflow port (134) and the liquid inlet of the distillation vessel (111); A circulation pump (300) is installed on the pipe connecting the first outlet (135) and the cleaning chamber (140). The pumping port of the circulation pump (300) is connected to the pipe connecting the first outlet (135) near the cleaning chamber (140) and the cleaning chamber (140). The drain port of the circulation pump (300) is connected to the pipe connecting the first outlet (135) away from the cleaning chamber (140) and the cleaning chamber (140).

2. The hydrocarbon distillation recovery apparatus as described in claim 1, characterized in that: The recovery assembly (120) includes a condenser (121) connected to the outlet of the distillation vessel (111) for condensing and liquefying the gaseous hydrocarbon cleaning agent distilled from the distillation vessel (111). The outlet of the condenser (121) is connected to the second inlet (136) via a pipe. The bottom of the distillation vessel (111) is provided with an oil collection tank for collecting the diverted grease. A switch control valve is provided on the pipe connecting the oil collection tank and the distillation vessel (111).

3. The hydrocarbon distillation recovery apparatus as described in claim 2, characterized in that: Both the coarse wash storage tank (131) and the fine wash storage tank (132) are equipped with level gauges.

4. The hydrocarbon distillation recovery apparatus as described in claim 3, characterized in that: The condenser (121) is internally equipped with a regeneration tank for collecting the liquefied hydrocarbon cleaning agent.

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