Coal tar hydrogenation industrial medicament injection device

Abstract

The coal tar hydrogenation industrial agent injection device comprises a coal tar tank body, a first communication pipeline is fixedly installed on the side wall of the coal tar tank body, a pneumatic pump is fixedly installed at the end of the first communication pipeline, and a dosing hose is fixedly connected to one side of the pneumatic pump; a second communication pipeline is fixedly mounted on the side wall of the coal tar tank body, one end of the second communication pipeline is fixedly connected with a metering pump, a third communication pipeline is fixedly connected to the side wall of the metering pump, and the end part of the third communication pipeline is connected with a production system interface; a pneumatic pump inlet valve is mounted on the first communicating pipeline, a metering pump inlet valve is mounted on the second communicating pipeline, and a metering pump outlet valve is mounted on the third communicating pipeline; a liquid level meter is fixedly mounted on the side wall of the coal tar tank body. The coal tar hydrogenation device has the beneficial effects of being more reasonable in structural design, convenient to operate, high in operation automation degree, safer and more reliable, and low in production and maintenance cost, and ensuring the safe, stable, long-period and full-load operation of the coal tar hydrogenation device.

Description

Technical Field

[0001] The utility model relates to the technical field of coal tar hydrogenation industry, in particular to a coal tar hydrogenation industry reagent injection device. Background Art

[0002] During the coal tar hydrogenation process, high-temperature coking of tar often causes reactor bed compaction, increased pressure difference, and damaged temperature measuring components. The system is forced to reduce the volume and load and cannot reach full load and long-term operation. In severe cases, the catalyst and temperature measuring components need to be replaced. In addition, coal tar hydrogenation catalysts are expensive and have a long production cycle, resulting in increased production and operating costs. In addition, due to corrosion of equipment pipelines, production equipment may run, bubble, drip, or leak, making on-site risk classification and control more difficult, increasing the labor intensity of personnel, affecting the safety and stability of the equipment, and increasing the company's production safety risks.

[0003] The publication number is: CN215312228U, and the name is: a coal tar hydrogenation liquid sulfur injection device, comprising a shell, a heating steam coil and a condensate coil are installed in the shell, the heating steam coil and the condensate coil are together, a dosing hole is provided on the top of the shell, a submersible pump and a stirrer are connected to the top of the shell, the lower end of the submersible pump extends into the shell, and the stirring blades at the lower end of the stirrer extend into the shell. The utility model ensures the continuous and stable operation of the sulfur injection system during production, which is beneficial to the regulation and control of the hydrogen sulfide index of the hydrogenation device; secondly, compared with dimethyl disulfide and carbon disulfide, solid sulfur has low toxicity, is easy to carry, safe to transport, easy to operate, and has a high safety factor; thirdly, the sulfur market price is cheap, which can reduce the procurement cost of raw materials and auxiliary materials for enterprises, thereby improving the economic benefits of enterprises.

[0004] Although the above device can inject liquid sulfur, it is not suitable for injecting other liquid medicines and has certain limitations in its scope of use. Moreover, the operation process is not automated enough, the operation safety factor is not high, and it is inconvenient to maintain. Utility Model Content

[0005] The purpose of the utility model is to provide a coal tar hydrogenation industrial reagent injection device which has a more reasonable structural design, convenient operation, high degree of operation automation, greater safety and reliability, and low production and maintenance costs, and ensures the safe, stable, long-term, and full-load operation of the coal tar hydrogenation device.

[0006] The utility model discloses a coal tar hydrogenation industrial reagent injection device, comprising a hydrogenation reagent injection tank, a first communicating pipe is fixedly installed on the side wall of the hydrogenation reagent injection tank, a pneumatic pump is fixedly installed on the end of the first communicating pipe, and a dosing hose is fixedly connected to one side of the pneumatic pump; a second communicating pipe is fixedly installed on the side wall of the hydrogenation reagent injection tank, one end of the second communicating pipe is fixedly connected to the metering pump, a third communicating pipe is fixedly connected to the side wall of the metering pump, and the end of the third communicating pipe is connected to the production system interface; a pneumatic pump inlet valve is installed on the first communicating pipe, a metering pump inlet valve is installed on the second communicating pipe, and a metering pump outlet valve is installed on the third communicating pipe; a liquid level meter is fixedly installed on the side wall of the hydrogenation reagent injection tank.

[0007] The provided dosing hose can be connected to the agent supply pipeline, and the pneumatic pump inlet valve is opened. The liquid medicine can be added to the hydrogenation agent injection tank through the first connecting pipeline through the pneumatic pump, and the added agent is buffered to prevent the agent supply pipeline from being blocked, ruptured, and other abnormal conditions, which may cause the interruption of agent injection and cause chaos in the production system. The use of this injection device can reduce the frequency of manual dosing and changing of medicines, and reduce labor intensity; the provided production system interface can be connected to the process pipeline of the production system, and the metering pump inlet valve and the metering pump outlet valve are opened. The liquid medicine passes through the second connecting pipeline and the third connecting pipeline, and finally ensures that the anti-coking and anti-corrosion agents are continuously injected into the production system. The device has a convenient operation process, and the flow regulation and control of the anti-coking and anti-corrosion agents are guaranteed during the industrial production of coal tar hydrogenation, so that the agents can be continuously and stably injected into the production system according to the set ratio, which can avoid the forced shutdown and overhaul and maintenance of the system due to high-temperature coking and equipment pipeline corrosion during the production process, reduce production costs and maintenance costs, reduce labor intensity, and ensure that the coal tar hydrogenation unit can be safe, stable, long-term, and full-load production, thereby improving the economic benefits of the enterprise.

[0008] The liquid level gauge is fixedly installed on the side wall of the hydrogenation agent injection tank to timely and accurately observe the real-time liquid level in the device to ensure that the anti-coking and anti-corrosion agents can be injected into the production system. The liquid level gauge is interlocked with the pneumatic pump and the metering pump. When the liquid level gauge shows a low alarm level, the pneumatic pump starts automatically and the metering pump adjusts the flow to prevent empty tank accidents.

[0009] An overflow pipe is fixedly installed on the side wall of the hydrogenation agent injection tank, a discharge pipe is fixedly installed on the bottom surface of the hydrogenation agent injection tank, the bottom end of the overflow pipe is connected to the discharge pipe, the top end of the overflow pipe is connected to a orifice plate, and a drain valve is installed on the discharge pipe.

[0010] A medicine collecting tank is arranged below the discharge pipe.

[0011] The overflow pipe is installed to enable quick and timely overflow when the liquid level is too high or there is a false display of liquid level, high liquid level alarm or other abnormal situations during the addition of reagents to the device; a orifice plate is installed on the upper part of the overflow pipe, and the orifice plate is interlocked with the drain valve and the pneumatic pump. When flow passes through the orifice plate, the drain valve automatically opens and the pneumatic pump automatically stops, and the excess reagent is transferred to the reagent collection tank through the discharge pipe to prevent tank overflow accidents.

[0012] A venting pipeline is fixedly installed on the top surface of the hydrogenation agent injection tank, and a venting valve is installed on the venting pipeline.

[0013] A pressure gauge is installed on the outer wall of the hydrogenation agent injection tank.

[0014] A pressure gauge is installed on the outer wall of the hydrogenation agent injection tank to facilitate observation of the actual pressure of the device; the purpose of installing the vent valve and vent pipeline is to relieve pressure and safely vent through the vent valve and vent pipeline when the pressure of the device is high, so as to ensure that the entire device is at normal pressure and operates safely and stably.

[0015] The outer wall surface of the hydrogenation agent injection tank is installed with heat-insulating electric heating and a thermometer.

[0016] The purpose of setting up the insulation electric heating is to ensure that the agent is in a fixed temperature range, ensure the flow performance, and prevent condensation or reduced flow due to low temperature in winter, which will affect the injection effect; the function of the thermometer is to transmit the signal to the insulation electric heating when the temperature of the hydrogenation agent injection tank reaches the set value, and the insulation heating automatically stops working to ensure that the agent is in a safe temperature range.

[0017] The bottom surface of the hydrogenation agent injection tank is provided with a base.

[0018] The provided base plays a role in fixing the hydrogenation agent injection tank.

[0019] An operation control system is installed on the outer wall of the hydrogenation agent injection tank. The operation control system is electrically connected to the pneumatic pump, and the pneumatic pump is electrically interlocked with the orifice plate and the drain valve.

[0020] The operation control system is electrically connected to the metering pump, and the metering pump is electrically interlocked with the pneumatic pump and the liquid level meter.

[0021] The pneumatic pump is electrically interlocked with the orifice plate and the drain valve; the metering pump is electrically interlocked with the pneumatic pump and the liquid level gauge. The operation control system is electrically connected to the metering pump and the pneumatic pump to ensure the normal operation of the entire device. It is used for system operation and flow regulation, realizing automatic operation process control and saving labor costs.

[0022] The outer wall surface of the hydrogenation agent injection tank is provided with a cleaning hole.

[0023] The cleaning hole is set to inspect and clean the hydrogenation agent injection tank when the device is shut down for maintenance to ensure that the hydrogenation agent injection tank is clean and free of debris.

[0024] The beneficial effects of the utility model are:

[0025] 1) The dosing hose provided can be connected to the agent supply pipeline, and the pneumatic pump inlet valve is opened. The liquid medicine can be added to the hydrogenation agent injection tank through the first connecting pipeline through the pneumatic pump to buffer the added agent, and prevent the agent supply pipeline from being blocked, ruptured, and other abnormal conditions, which may cause the interruption of agent injection and cause chaos in the production system. The use of this injection device can reduce the frequency of manual dosing and changing of medicines, and reduce labor intensity; the production system interface provided can be connected to the process pipeline of the production system, and the metering pump inlet valve and metering pump outlet valve are opened. The liquid medicine passes through the second connecting pipeline and the third connecting pipeline, and finally ensures that the anti-coking and anti-corrosion agents are continuously injected into the production system. The device is convenient to operate, and the flow regulation and control of the anti-coking and anti-corrosion agents are guaranteed during the industrial production of coal tar hydrogenation, so that the agents can be continuously and stably injected into the production system according to the set ratio, which can avoid the forced shutdown and overhaul and maintenance of the system due to high temperature coking and equipment pipeline corrosion during the production process, reduce production costs and maintenance costs, reduce labor intensity, and ensure that the coal tar hydrogenation unit can be safe, stable, long-term, and full-load production, thereby improving the economic benefits of the enterprise.

[0026] 2) The liquid level gauge is fixedly installed on the side wall of the hydrogenation agent injection tank to timely and accurately observe the real-time liquid level in the device to ensure that the anti-coking and anti-corrosion agents can be injected into the production system. The liquid level gauge is interlocked with the pneumatic pump and the metering pump. When the liquid level gauge shows a low alarm level, the pneumatic pump starts automatically and the metering pump adjusts the flow to prevent empty tank accidents.

[0027] 3) The overflow pipe is installed to enable quick and timely overflow when the liquid level is too high or there is a false display of the liquid level, a high liquid level alarm or other abnormal situations during the addition of the reagent to the device; a orifice plate is installed on the upper part of the overflow pipe, and the orifice plate is interlocked with the drain valve and the pneumatic pump. When there is flow passing through the orifice plate, the drain valve automatically opens and the pneumatic pump automatically stops, and the excess reagent is transferred to the reagent collection tank through the discharge pipe to prevent tank overflow accidents.

[0028] 4) The device has a more reasonable structural design, convenient operation, high degree of operation automation, greater safety and reliability, and low production and maintenance costs, ensuring the safe, stable, long-term, and full-load operation of the coal tar hydrogenation device. The device has a high degree of automation, energy saving and environmental protection, high safety factor, good stability, low cost, easy operation, and reliable use. At the same time, the commissioning of the device can avoid the forced shutdown and overhaul of the system due to high-temperature coking and equipment pipeline corrosion during the production process, reduce production costs and maintenance costs, reduce labor intensity, and ensure that the coal tar hydrogenation device can be safely, stably, long-term, and full-load production, thereby improving the economic benefits of the enterprise. At present, the device has been put into production and use with good results. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] Figure 1 It is a structural schematic diagram of the utility model.

[0030] In the figure: dosing hose 1, pneumatic pump 2, pneumatic pump inlet valve 3, vent valve 4, vent pipeline 5, overflow pipe 6, drain valve 7, reagent collection tank 8, operation control system 9, cleaning hole 10, liquid level meter 11, pressure gauge 12, thermometer 13, metering pump inlet valve 14, metering pump 15, safety valve 16, metering pump outlet valve 17, production system interface 18, insulation electric heating 19, base 20, orifice plate 21, hydrogenation reagent injection tank 22, first connecting pipe 23, second connecting pipe 24, third connecting pipe 25, discharge pipe 26. DETAILED DESCRIPTION

[0031] Example 1.

[0032] The utility model will be further described below in conjunction with the accompanying drawings.

[0033] The utility model includes a dosing hose 1, a pneumatic pump 2, a pneumatic pump inlet valve 3, a vent valve 4, a vent pipeline 5, an overflow pipe 6, a drain valve 7, a reagent collecting tank 8, an operation control system 9, a cleaning hole 10, a liquid level meter 11, a pressure gauge 12, a metering pump inlet valve 14, a metering pump 15, a safety valve 16, a metering pump outlet valve 17, a production system interface 18, an orifice plate 21, a hydrogenation agent injection tank 22, a first connecting pipe 23, a second connecting pipe 24, a third connecting pipe 25, and a discharge pipe 26. The specific structure includes a hydrogenation agent injection tank 22, a first connecting pipe 23 is fixedly installed on the side wall of the hydrogenation agent injection tank 22, and a first connecting pipe 24 is fixedly installed on the side wall of the hydrogenation agent injection tank 22. A pneumatic pump 2 is fixedly installed at the end of the connecting pipe 23, and a dosing hose 1 is fixedly connected to one side of the pneumatic pump 2; a second connecting pipe 24 is fixedly installed on the side wall of the hydrogenation agent injection tank 22, one end of the second connecting pipe 24 is fixedly connected to the metering pump 15, a third connecting pipe 25 is fixedly connected to the side wall of the metering pump 15, and an end of the third connecting pipe 25 is connected to the production system interface 18; a pneumatic pump inlet valve 3 is installed on the first connecting pipe 23, a metering pump inlet valve 14 is installed on the second connecting pipe 24, and a metering pump outlet valve 17 is installed on the third connecting pipe 25; a liquid level meter 11 is fixedly installed on the side wall of the hydrogenation agent injection tank 22.

[0034] An overflow pipe 6 is fixedly installed on the side wall of the hydrogenation agent injection tank 22, and a discharge pipe 26 is fixedly installed on the bottom surface of the hydrogenation agent injection tank 22. The bottom end of the overflow pipe 6 is connected to the discharge pipe 26, and the top end of the overflow pipe 6 is connected to the orifice plate 21. A drain valve 7 is installed on the discharge pipe 26.

[0035] A medicine collecting tank 8 is disposed below the discharge pipe 26 .

[0036] A vent line 5 is fixedly installed on the top surface of the hydrogenation agent injection tank 22 , and a vent valve 4 is installed on the vent line 5 .

[0037] A pressure gauge 12 is installed on the outer wall of the hydrogenation agent injection tank 22 .

[0038] An operation control system 9 is installed on the outer wall of the hydrogenation agent injection tank 22 . The operation control system 9 is electrically connected to the pneumatic pump 2 . The pneumatic pump 2 is electrically interlocked with the orifice plate 21 and the drain valve 7 .

[0039] The operation control system 9 is electrically connected to the metering pump 15 , and the metering pump 15 is electrically interlocked with the pneumatic pump 2 and the liquid level meter 11 .

[0040] The model of the operating control system 9 is: Macroset B-PRIMIS DC-RPO4.

[0041] Usage method: connect the dosing hose 1 to the agent supply pipeline, then open the pneumatic pump inlet valve 3, and the pneumatic pump 2 can add the liquid medicine through the first connecting pipe 23 to the hydrogenation agent injection tank 22 to buffer the added agent to prevent abnormal conditions such as blockage and rupture of the agent supply pipeline, which may cause interruption of agent injection and chaos in the production system. The use of the injection device can reduce the frequency of manual dosing and drug replacement and reduce labor intensity; the set production system interface 18 can be connected to the production system process pipeline, open the metering pump inlet valve 14 and the metering pump outlet valve 17, and the liquid medicine passes through the second connecting pipe 24 and the third connecting pipe 25, and finally ensures that the anti-coking and anti-corrosion agents are continuously injected into the production system; the overflow pipe 6 is installed to prevent the drug supply pipeline from being blocked or broken, which may cause the interruption of agent injection and chaos in the production system. When the liquid level is too high or the liquid level is falsely displayed or a high liquid level alarm occurs during the addition to the device, overflow can be performed quickly and timely; an orifice plate 21 is installed on the upper part of the overflow pipe 6, and the orifice plate 21 is interlocked with the drain valve 7 and the pneumatic pump 2. When flow passes through the orifice plate 21, the drain valve 7 automatically opens and the pneumatic pump 2 automatically stops, and the excess reagent is transferred to the reagent collection tank 8 through the discharge pipe 26 to prevent tank overflow accidents; the liquid level meter 11 can timely and accurately observe the real-time liquid level in the device to ensure that the anti-coking and anti-corrosion reagents can be injected into the production system. The liquid level meter 11 is interlocked with the pneumatic pump 2 and the metering pump 15. When the liquid level meter 11 displays a low alarm liquid level, the pneumatic pump 2 starts automatically and the metering pump 15 adjusts the flow to prevent empty tank accidents.

[0042] Example 2.

[0043] The following will be combined with the attached Figure 1 The utility model is further described.

[0044] The utility model comprises a dosing hose 1, a pneumatic pump 2, a pneumatic pump inlet valve 3, a vent valve 4, a vent pipeline 5, an overflow pipe 6, a drain valve 7, a reagent collecting tank 8, an operation control system 9, a cleaning hole 10, a liquid level gauge 11, a pressure gauge 12, a thermometer 13, a metering pump inlet valve 14, a metering pump 15, a safety valve 16, a metering pump outlet valve 17, a production system interface 18, an insulation electric heating 19, a base 20, an orifice plate 21, a hydrogenation agent injection tank 22, a first connecting pipe 23, a second connecting pipe 24, a third connecting pipe 25, and a discharge pipe 26. The specific structure comprises a hydrogenation agent injection tank 22, a first connecting pipe 23, a second connecting pipe 24, a third connecting pipe 25, and a discharge pipe 26. A connecting pipe 23, a pneumatic pump 2 is fixedly installed at the end of the first connecting pipe 23, and a dosing hose 1 is fixedly connected to one side of the pneumatic pump 2; a second connecting pipe 24 is fixedly installed on the side wall of the hydrogenation agent injection tank 22, one end of the second connecting pipe 24 is fixedly connected to the metering pump 15, a third connecting pipe 25 is fixedly connected to the side wall of the metering pump 15, and the end of the third connecting pipe 25 is connected to the production system interface 18; a pneumatic pump inlet valve 3 is installed on the first connecting pipe 23, a metering pump inlet valve 14 is installed on the second connecting pipe 24, and a metering pump outlet valve 17 is installed on the third connecting pipe 25; a liquid level meter 11 is fixedly installed on the side wall of the hydrogenation agent injection tank 22.

[0045] An overflow pipe 6 is fixedly installed on the side wall of the hydrogenation agent injection tank 22, and a discharge pipe 26 is fixedly installed on the bottom surface of the hydrogenation agent injection tank 22. The bottom end of the overflow pipe 6 is connected to the discharge pipe 26, and the top end of the overflow pipe 6 is connected to the orifice plate 21. A drain valve 7 is installed on the discharge pipe 26.

[0046] A medicine collecting tank 8 is disposed below the discharge pipe 26 .

[0047] A vent line 5 is fixedly installed on the top surface of the hydrogenation agent injection tank 22 , and a vent valve 4 is installed on the vent line 5 .

[0048] A pressure gauge 12 is installed on the outer wall of the hydrogenation agent injection tank 22 .

[0049] The outer wall surface of the hydrogenation agent injection tank 22 is installed with a heat-insulating electric heating 19 and a thermometer 13.

[0050] A base 20 is installed on the bottom surface of the hydrogenation agent injection tank 22 .

[0051] An operation control system 9 is installed on the outer wall of the hydrogenation agent injection tank 22 . The operation control system 9 is electrically connected to the pneumatic pump 2 . The pneumatic pump 2 is electrically interlocked with the orifice plate 21 and the drain valve 7 .

[0052] The operation control system 9 is electrically connected to the metering pump 15 , and the metering pump 15 is electrically interlocked with the pneumatic pump 2 and the liquid level meter 11 .

[0053] The outer wall surface of the hydrogenation agent injection tank 22 is provided with a cleaning hole 10 .

[0054] Method of use: connect the dosing hose 1 to the agent supply pipeline, then open the pneumatic pump inlet valve 3, and the pneumatic pump 2 can add the liquid medicine through the first connecting pipe 23 to the hydrogenation agent injection tank 22, buffer the added agent, prevent the agent supply pipeline from being blocked, ruptured, and other abnormal conditions, causing the interruption of agent injection and causing chaos in the production system. The use of the injection device can reduce the frequency of manual dosing and changing of medicines, and reduce labor intensity; the set production system interface 18 can be connected to the production system process pipeline, open the metering pump inlet valve 14 and the metering pump outlet valve 17, and the liquid medicine passes through the second connecting pipe 24 and the third connecting pipe 25, and finally ensures that the anti-coking and anti-corrosion agent is continuously injected into the production system; the overflow pipe 6 is installed to enable the overflow to be carried out quickly and timely when the liquid level is too high or the liquid level is falsely displayed, the high liquid level alarm, and other abnormal conditions occur during the addition of the agent to the device; the orifice plate 21 is installed on the upper part of the overflow pipe 6, and the orifice plate 21 is interlocked with the drain valve 7 and the pneumatic pump 2. When there is flow passing through the orifice plate 21, the drain valve 7 and the pneumatic pump 2 are interlocked. The valve 7 opens automatically and the pneumatic pump 2 stops automatically, and the excess reagent is transferred to the reagent collection tank 8 through the discharge pipe 26 to prevent tank overflow accidents; the liquid level meter 11 can timely and accurately observe the real-time liquid level in the device to ensure that the anti-coking and anti-corrosion reagents can meet the injection into the production system. The liquid level meter 11 is interlocked with the pneumatic pump 2 and the metering pump 15. When the liquid level meter 11 shows a low alarm liquid level, the pneumatic pump 2 starts automatically and the metering pump 15 adjusts the flow to prevent empty tank accidents; the purpose of the insulation electric heating 19 is to Ensure that the reagent is in a fixed temperature range, ensure the flow performance, and prevent condensation or reduced flowability due to low temperature in winter, which will affect the injection effect; the function of the thermometer 13 is to transmit a signal to the insulation electric heating 19 when the temperature in the hydrogenation reagent injection tank 22 reaches the set value, and the insulation heating 19 automatically stops working to ensure that the reagent is in a safe temperature range; the cleaning hole 10 is set to inspect and clean the coal tar tank body 22 when the device is shut down for maintenance to ensure that the coal tar tank body 22 is clean and free of debris.

Claims

1. A coal tar hydrogenation industrial reagent injection device, characterized in that: The invention comprises a coal tar tank body (22), a first connecting pipe (23) being fixedly mounted on the side wall of the coal tar tank body (22), a pneumatic pump (2) being fixedly mounted on the end of the first connecting pipe (23), and a dosing hose (1) being fixedly connected to one side of the pneumatic pump (2); a second connecting pipe (24) being fixedly mounted on the side wall of the coal tar tank body (22), one end of the second connecting pipe (24) being fixedly connected to a metering pump (15), a third connecting pipe (25) being fixedly connected to the side wall of the metering pump (15), and an end of the third connecting pipe (25) being connected to a production system interface (18); a pneumatic pump inlet valve (3) being mounted on the first connecting pipe (23), a metering pump inlet valve (14) being mounted on the second connecting pipe (24), and a metering pump outlet valve (17) being mounted on the third connecting pipe (25); and a liquid level meter (11) being fixedly mounted on the side wall of the coal tar tank body (22).

2. A coal tar hydrogenation industrial reagent injection device as claimed in claim 1, characterized in that: An overflow pipe (6) is fixedly mounted on the side wall of the coal tar tank body (22), a discharge pipe (26) is fixedly mounted on the bottom surface of the coal tar tank body (22), the bottom end of the overflow pipe (6) is connected to the discharge pipe (26), the top end of the overflow pipe (6) is connected to an orifice plate (21), and a sewage valve (7) is mounted on the discharge pipe (26).

3. A coal tar hydrogenation industrial reagent injection device as claimed in claim 2, characterized in that: A medicine collecting tank (8) is provided below the discharge pipe (26).

4. A coal tar hydrogenation industrial reagent injection device as claimed in claim 3, characterized in that: A venting pipeline (5) is fixedly installed on the top surface of the coal tar tank body (22), and a venting valve (4) is installed on the venting pipeline (5).

5. A coal tar hydrogenation industrial reagent injection device as claimed in claim 4, characterized in that: A pressure gauge (12) is installed on the outer wall surface of the coal tar tank body (22).

6. A coal tar hydrogenation industrial reagent injection device as claimed in claim 5, characterized in that: The outer wall surface of the coal tar tank body (22) is installed with a heat-insulating electric heat tracing (19) and a thermometer (13).

7. A coal tar hydrogenation industrial reagent injection device as claimed in claim 6, characterized in that: A base (20) is installed on the bottom surface of the coal tar tank body (22).

8. A coal tar hydrogenation industrial reagent injection device as claimed in claim 7, characterized in that: An operation control system (9) is installed on the outer wall of the coal tar tank (22). The operation control system (9) is electrically connected to the pneumatic pump (2). The pneumatic pump (2) is electrically interlocked with the orifice plate (21) and the drain valve (7).

9. A coal tar hydrogenation industrial reagent injection device as claimed in claim 8, characterized in that: The operation control system (9) is electrically connected to the metering pump (15), and the metering pump (15) is electrically interlocked with the pneumatic pump (2) and the liquid level meter (11).

10. A coal tar hydrogenation industrial reagent injection device as claimed in claim 9, characterized in that: The outer wall surface of the coal tar tank body (22) is provided with a cleaning hole (10).

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