Vacuumizing device for coal tar process

Abstract

A sealing plate is arranged in a pressure tank, a low-pressure cavity is communicated with a production device through a process system connector, a separation partition plate is arranged in a liquid separation tank, a liquid separation tank pressure gauge and a torch mechanism are arranged on the liquid separation tank, an oil phase channel is arranged on the top face of the separation partition plate, and liquid level meters are arranged in a water phase cavity and an oil phase cavity. The high-pressure cavity is communicated with the water-phase cavity, the low-pressure cavity is communicated with the oil-phase cavity, the high-pressure cavity and the water-phase cavity are communicated with the cooler, the high-pressure cavity, the water-phase cavity and the oil-phase cavity are all provided with pollution discharge mechanisms, and the motor is electrically connected with the pressure tank. According to the utility model, the vacuumizing effect of the coal tar industrial production device can be effectively controlled, and impurities in raw oil can be removed; catalyst inactivation or bed pressure difference rise caused by catalyst pore channel blockage can be avoided, and operation of a coal tar hydrogenation device is guaranteed; the device is high in automation degree, high in safety coefficient, good in reliability, good in stability, low in manufacturing cost, convenient to operate by personnel and low in labor intensity.

Description

Technical Field

[0001] The utility model belongs to the field of coal tar process production, and specifically relates to a coal tar process vacuum pumping device. Background Art

[0002] During the pyrolysis or dry distillation process, coal is affected by the production process, and the tar contains a large amount of impurities such as asphaltene and metal ions, with complex components and poor properties. The oil product must first undergo a pretreatment stage during the coal tar hydrogenation process to remove impurities such as asphaltene and metal ions in the raw material to improve the oil product properties. Otherwise, coal tar with high content of asphaltene, high metal ions and other impurities entering the hydrogenation reaction system will cause the catalyst pores to be blocked and cause the catalyst to be deactivated, affecting the safety, stability, and long-term operation of the device. According to the problems existing in the current production of the device, the utility model optimizes the existing process and adds a vacuum system, with the purpose of removing impurities such as asphaltene and metal ions in the raw oil at a lower temperature and pressure, and providing technical support for the "safe, stable, long, full, and excellent" operation of the device. Utility Model Content

[0003] The utility model aims to provide a coal tar process vacuum pumping device to solve the above problems.

[0004] In order to achieve the above purpose, the technical solution adopted by the utility model is:

[0005] A coal tar process vacuum pumping device comprises a pressure tank, a liquid separator, a cooler and a motor. A sealing plate is arranged in the pressure tank to separate the pressure tank into a high-pressure cavity and a low-pressure cavity. The low-pressure cavity is connected with a production device through a process system interface. A separation partition is arranged in the liquid separator to separate the liquid separator into a water phase cavity and an oil phase cavity. A liquid separator pressure gauge and a flare mechanism are arranged on the liquid separator. An oil phase channel is arranged on the top surface of the separation partition. Liquid level gauges are arranged in the water phase cavity and the oil phase cavity respectively. The high-pressure cavity is connected with the water phase cavity, the low-pressure cavity is connected with the oil phase cavity, the high-pressure cavity and the water phase cavity are connected with the cooler respectively, the high-pressure cavity, the water phase cavity and the oil phase cavity are all provided with a sewage discharge mechanism, and the motor is electrically connected to the pressure tank.

[0006] In order to further realize the utility model, an inlet valve is arranged on the cooling water inlet pipe of the cooler, and an outlet valve and a cooling water thermometer are arranged on the cooling water outlet pipe in sequence. The inlet valve and the outlet valve are used to adjust the cooling water flow rate to further control the working fluid temperature in the high-pressure cavity, and the cooling water thermometer arranged on the cooling water outlet pipe can be used to observe the heat exchange efficiency between the working fluid and the cooling water in the high-pressure cavity.

[0007] In order to further realize the utility model, a water supply pipe, a high-pressure chamber inlet thermometer and a cold medium valve are sequentially arranged on the pipeline connecting the cooler and the high-pressure chamber, a water supply valve is arranged on the water supply pipe, and the water supply pipe is connected to the desalted water interface. The high-pressure chamber inlet thermometer is used to observe the working fluid temperature of the high-pressure chamber, the water supply pipe is connected to the fresh desalted water device and interlocked with the water phase liquid level, and the water supply valve is automatically opened for water supply when the water level in the liquid separation tank drops or the regular sewage level is low, and the water supply valve is automatically closed after the water level is normal, so as to ensure that the water phase water level in the liquid separation tank is in a normal state.

[0008] In order to further realize the utility model, the sewage discharge mechanism includes a sewage discharge pipe arranged between the high-pressure cavity and the water phase cavity, the sewage discharge pipes are respectively connected to the sewage main pipe, a water tank is arranged below the sewage discharge pipe of the oil phase cavity, and control valves are arranged on the sewage discharge pipe and the sewage main pipe. The water quality in the high-pressure cavity is replaced regularly to ensure that the working fluid in the high-pressure cavity is clean and free of debris.

[0009] In order to further realize the utility model, a high-low pressure control valve is arranged on the pipeline connecting the high-pressure cavity and the water phase cavity, and a connecting valve is arranged on the pipeline connecting the low-pressure cavity and the oil phase cavity.

[0010] In order to further realize the utility model, a pressure gauge is arranged on the pipeline connecting the low-pressure cavity and the process system interface.

[0011] In order to further realize the utility model, a manhole is provided on the side wall of the liquid separation tank, which can clean the impurities inside the liquid separation tank and detect the internal conditions during shutdown and maintenance.

[0012] Compared with the prior art, the utility model has the following beneficial effects:

[0013] The utility model is provided with a motor connected with the pressure tank, which provides power support for normal operation and start and stop operation for vacuum pumping; the pressure tank is separated into a high-pressure cavity and a low-pressure cavity, which can form a high-pressure side and a low-pressure side during operation, and achieve the purpose of vacuum pumping for the production device through the pressure difference; the high-pressure cavity is connected with the water phase cavity, which can discharge the oil gas, water vapor and working fluid formed in the high-pressure cavity into the liquid separator, and the above liquid is introduced into the high-pressure cavity again through the water phase cavity and the cooler to form a closed circulation loop, so as to continuously provide the vacuum pumping working fluid; the low-pressure cavity is connected with the oil phase cavity, and a connecting valve is used for vacuum pumping The vacuum degree can be slightly adjusted. The low-pressure cavity is also connected to the process system interface. The production device is introduced into the vacuum system of the utility model through the process system interface to perform vacuum operation on the production device. The pressure gauge is used to observe the vacuum effect of the utility model; the liquid level meter is used to observe the water and oil two-phase liquid levels; the separator tank pressure gauge detects the separator tank pressure in real time, and the torch mechanism discharges the non-condensable gas brought by the utility model into the torch for combustion treatment; the working fluid in the high-pressure cavity is cooled by cooling water to improve the vacuum effect. The control valve on the oil phase cavity drain pipe can discharge the oily wastewater generated by vacuuming into the sink.

[0014] The utility model utilizes the work efficiency of the high-pressure cavity and the low-pressure cavity during operation to effectively control the vacuum effect of the coal tar industrial production device, and improves the properties of the raw oil by removing impurities such as asphaltene and metal ions in the raw oil through distillation operation; during the production process, the utility model device is normally put into use to obtain raw oil with good properties, which can avoid the deactivation of the catalyst caused by the clogging of the catalyst pores by asphaltene and metal ions or the system shutdown caused by the increase of the bed pressure difference, thereby ensuring the "safe, stable, long, full and excellent" operation of the coal tar hydrogenation device; the utility model device has a high degree of automation, a high safety factor, good reliability, good stability, low cost, convenient operation by personnel and low labor intensity. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a schematic diagram of the structure of the utility model;

[0016] The meanings of the accompanying drawings are as follows: 1. Pressure tank; 1-1. High-pressure cavity; 1-2. Low-pressure cavity; 2. Separating tank; 2-1. Water phase cavity; 2-2. Oil phase cavity; 3. Cooler; 4. Motor; 5. Sealing plate; 6. Process system interface; 7. Separation partition; 8. Separating tank pressure gauge; 9. Flare mechanism; 10. Oil phase channel; 11. Liquid level gauge; 13. Inlet valve; 14. Outlet valve; 15. Cooling water thermometer; 16. Water supply pipe; 17. High-pressure cavity inlet thermometer; 18. Cold medium valve; 19. Water supply valve; 20. Desalted water interface; 12-1. Drain pipe; 12-2. Drain main pipe; 12-3. Sink; 12-4. Control valve; 21. High and low pressure control valves; 22. Connecting valve; 23. Pressure gauge; 24. Manhole. DETAILED DESCRIPTION

[0017] The utility model is further described below in conjunction with the accompanying drawings and specific implementation methods.

[0018] like Figure 1 As shown, a coal tar process vacuum device comprises a pressure tank 1, a liquid separator 2, a cooler 3 and a motor 4. A sealing plate 5 is arranged in the pressure tank 1 to separate the pressure tank 1 into a high-pressure cavity 1-1 and a low-pressure cavity 1-2. The low-pressure cavity 1-2 is connected to the production device through a process system interface 6. A separation partition 7 is arranged in the liquid separator 2 to separate the liquid separator 2 into a water phase cavity 2-1 and an oil phase cavity 2-2. A liquid separator pressure gauge is arranged on the liquid separator 2. 8 and a flare mechanism 9, an oil phase channel 10 is arranged on the top surface of the separation partition 7, liquid level gauges 11 are respectively arranged in the water phase chamber 2-1 and the oil phase chamber 2-2, the high pressure chamber 1-1 is connected with the water phase chamber 2-1, the low pressure chamber 1-2 is connected with the oil phase chamber 2-2, the high pressure chamber 1-1 and the water phase chamber 2-1 are respectively connected with the cooler 3, the high pressure chamber 1-1, the water phase chamber 2-1 and the oil phase chamber 2-2 are all provided with a sewage discharge mechanism, and the motor 4 is electrically connected to the pressure tank 1.

[0019] An inlet valve 13 is arranged on the cooling water inlet pipe of the cooler 3, and an outlet valve 14 and a cooling water thermometer 15 are arranged in sequence on the cooling water outlet pipe; a water supply pipe 16, a high-pressure chamber inlet thermometer 17 and a cold medium valve 18 are arranged in sequence on the pipeline connecting the cooler 3 and the high-pressure chamber 1-1, a water supply valve 19 is arranged on the water supply pipe 16, and the water supply pipe 16 is connected to the desalted water interface 20.

[0020] The sewage discharge mechanism includes a sewage discharge pipe 12-1 arranged between the high-pressure chamber 1-1 and the water phase chamber 2-1. The sewage discharge pipe 12-1 is connected to the sewage main pipe 12-2 respectively. A water tank 12-3 is arranged below the sewage discharge pipe 12-1 of the oil phase chamber 2-2. Control valves 12-4 are provided on the sewage discharge pipe 12-1 and the sewage main pipe 12-2.

[0021] A high-low pressure control valve 21 is arranged on the pipeline connecting the high-pressure chamber 1-1 and the water phase chamber 2-1, and a connecting valve 22 is arranged on the pipeline connecting the low-pressure chamber 1-2 and the oil phase chamber 2-2.

[0022] A pressure gauge 23 is provided on the pipeline connecting the low-pressure chamber 1 - 2 and the process system interface 6 .

[0023] A manhole 24 is provided on the side wall of the liquid separation tank 1 .

Claims

1. A coal tar process vacuum pumping device, characterized in that: The invention comprises a pressure tank (1), a liquid separation tank (2), a cooler (3) and a motor (4); a sealing plate (5) is arranged in the pressure tank (1) for separating the pressure tank (1) into a high-pressure chamber (1-1) and a low-pressure chamber (1-2); the low-pressure chamber (1-2) is connected to a production device via a process system interface (6); a separation partition (7) is arranged in the liquid separation tank (2) for separating the liquid separation tank (2) into a water phase chamber (2-1) and an oil phase chamber (2-2); a liquid separation tank pressure gauge (8) and a flare mechanism (9) are arranged on the liquid separation tank (2); ), an oil phase channel (10) is arranged on the top surface of the separation baffle (7), liquid level gauges (11) are respectively arranged in the water phase chamber (2-1) and the oil phase chamber (2-2), the high pressure chamber (1-1) is connected to the water phase chamber (2-1), the low pressure chamber (1-2) is connected to the oil phase chamber (2-2), the high pressure chamber (1-1) and the water phase chamber (2-1) are respectively connected to the cooler (3), the high pressure chamber (1-1), the water phase chamber (2-1) and the oil phase chamber (2-2) are all provided with sewage discharge mechanisms, and the motor (4) is electrically connected to the pressure tank (1).

2. The coal tar process vacuum pumping device according to claim 1, characterized in that: An inlet valve (13) is provided on the cooling water inlet pipe of the cooler (3), and an outlet valve (14) and a cooling water thermometer (15) are provided on the cooling water outlet pipe in sequence.

3. The coal tar process vacuum pumping device according to claim 1 or 2, characterized in that: A water supply pipe (16), a high-pressure chamber inlet thermometer (17) and a cold medium valve (18) are sequentially arranged on a pipeline connecting the cooler (3) and the high-pressure chamber (1-1); a water supply valve (19) is arranged on the water supply pipe (16); and the water supply pipe (16) is connected to a desalted water interface (20).

4. The coal tar process vacuum pumping device according to claim 3, characterized in that: The sewage discharge mechanism comprises a sewage discharge pipe (12-1) arranged between the high-pressure chamber (1-1) and the water phase chamber (2-1), the sewage discharge pipe (12-1) being connected to the sewage main pipe (12-2), a water tank (12-3) being arranged below the sewage discharge pipe (12-1) of the oil phase chamber (2-2), and control valves (12-4) being arranged on the sewage discharge pipe (12-1) and the sewage main pipe (12-2).

5. The coal tar process vacuum pumping device according to claim 4, characterized in that: A high-low pressure control valve (21) is provided on the pipeline connecting the high-pressure chamber (1-1) and the water phase chamber (2-1), and a connecting valve (22) is provided on the pipeline connecting the low-pressure chamber (1-2) and the oil phase chamber (2-2).

6. The vacuum pumping device for coal tar process according to claim 5, characterized in that: A pressure gauge (23) is provided on the pipeline connecting the low-pressure chamber (1-2) and the process system interface (6).

7. The vacuum pumping device for coal tar process according to claim 6, characterized in that: A manhole (24) is provided on the side wall of the liquid separation tank (2).

Images