CN211253775U - Benzene storage device for coal coking system - Google Patents

Abstract

The utility model discloses a benzene storage device for a coal coking system, which comprises a tank body and a nitrogen storage tank, wherein the lower part of the tank body is communicated with a liquid inlet pipe and a liquid outlet pipe; a floating disc is arranged in the tank body above the liquid inlet valve in a sliding manner up and down, and a sealing ring in sliding contact with the inner wall of the tank body is fixed at the edge of the floating disc; the top of the tank body is communicated with a nitrogen storage tank through a balance pipe, and a breather valve is arranged on the balance pipe; the liquid inlet control valve and the liquid outlet control valve are electrically connected with the output end of the controller. The advantages are that: the floating disc is arranged in the tank body, nitrogen and benzene are separated through the floating disc, the nitrogen is filled above the floating disc, only the nitrogen is sucked and discharged in the benzene charging and discharging process, the environment pollution caused by the outward discharge of the gas carrying the benzene in the benzene charging process can be avoided, meanwhile, the problem that the outside air enters the tank body to cause pollution in the benzene discharging process is solved, and the product quality is ensured.

Description

Benzene storage device for coal coking system

The technical field is as follows:

the utility model relates to a coal coking technical field, specifically speaking relate to a store up benzene device for coal coking system.

Background art:

coal coking is also called high-temperature dry distillation of coal, coal is used as a raw material, the raw material is heated to about 950 ℃ under the condition of air isolation, coke is produced through high-temperature dry distillation, and meanwhile coal gas and coal tar are obtained, and other chemical products are recovered.

The coke production system comprises a plurality of subsystems such as coal preparation, coking, gas purification and the like, wherein the gas purification system can recover part of benzene hydrocarbon and needs to be collected by a benzene storage tank, a breather valve needs to be arranged at the top of the benzene storage tank in order to ensure that hydrocarbon substances can be smoothly discharged into the benzene storage tank, but when benzene is added, the gas in the tank can carry benzene to be discharged into the atmosphere, so that the environment is polluted, and the human health is harmed; when benzene is discharged, external gas enters the tank body through the breather valve to pollute products, and the product quality is reduced.

The utility model has the following contents:

an object of the utility model is to provide a store up benzene device for coal coking system can avoid the polluted environment.

The utility model discloses by following technical scheme implement: the benzene storage device for the coal coking system comprises a tank body and a nitrogen storage tank, wherein the lower part of the tank body is communicated with a liquid inlet pipe and a liquid outlet pipe, and the liquid inlet pipe and the liquid outlet pipe are respectively provided with a liquid inlet control valve and a liquid outlet control valve; a floating disc is arranged in the tank body above the liquid inlet valve in a vertically sliding manner, and a sealing ring in sliding contact with the inner wall of the tank body is fixed at the edge of the floating disc; the top of the tank body is communicated with the nitrogen storage tank through a balance pipe, and a breather valve is arranged on the balance pipe; the liquid inlet control valve and the liquid outlet control valve are electrically connected with the output end of the controller.

Further, it still include with low liquid level alarm and the high liquid level alarm of the output electricity of controller the drain pipe top tank side wall go up from bottom to top install in proper order with first level gauge, second level gauge, third level gauge, the fourth level gauge that the controller input electricity is connected.

Furthermore, a cofferdam is arranged on the periphery of the tank body, and a plurality of benzene concentration detectors electrically connected with the input end of the controller are fixed on the inner side of the cofferdam.

Further, it still includes the accident pond advance liquid control valve entrance point the feed liquor pipe facial make-up is equipped with the feed liquor stop valve, the feed liquor stop valve with between the liquid control valve the feed liquor pipe through the delivery pipe with accident pond intercommunication the discharge control valve has been installed to the entrance point of delivery pipe.

The utility model has the advantages that: the floating disc is arranged in the tank body, nitrogen and benzene are separated through the floating disc, the nitrogen is filled above the floating disc, only the nitrogen is sucked and discharged in the benzene charging and discharging process, the environment pollution caused by the outward discharge of the gas carrying the benzene in the benzene charging process can be avoided, meanwhile, the problem that the outside air enters the tank body to cause pollution in the benzene discharging process is solved, and the product quality is ensured.

Description of the drawings:

fig. 1 is a schematic view of the entire structure of embodiment 1.

Fig. 2 is a schematic view of the entire structure of embodiment 2.

1-tank body; 2-a nitrogen storage tank; 3-a liquid inlet pipe; 4-a liquid outlet pipe; 5-a liquid inlet control valve; 6-a liquid outlet control valve; 7-a floating disc; 8-sealing ring; 9-a balance tube; 10-a breather valve; 11-a controller; 12-low level alarm; 13-high level alarm; 14-a first level gauge; 15-a second level gauge; 16-a third level gauge; 17-a fourth level gauge; 18-cofferdam; a 19-benzene concentration detector; 20-accident pool; 21-liquid inlet stop valve; 22-a discharge pipe; 23-emission control valve.

The specific implementation mode is as follows:

in the description of the present invention, it should be noted that, as the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. appear, the indicated orientation or positional relationship is based on the orientation or positional relationship shown in the drawings, and is only for convenience of description and simplification of description, but does not indicate or imply that the indicated device or element must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and "third" as appearing herein are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

Example 1: as shown in fig. 1, a benzene storage device for a coal coking system comprises a tank body 1 and a nitrogen storage tank 2, wherein the lower part of the tank body 1 is communicated with a liquid inlet pipe 3 and a liquid outlet pipe 4, and the liquid inlet pipe 3 and the liquid outlet pipe 4 are respectively provided with a liquid inlet control valve 5 and a liquid outlet control valve 6; a floating disc 7 is arranged in the tank body 1 above the liquid inlet control valve 5 in a vertical sliding manner, and a sealing ring 8 in sliding contact with the inner wall of the tank body 1 is fixed at the edge of the floating disc 7; the top of the tank body 1 is communicated with the nitrogen storage tank 2 through a balance pipe 9, and a breather valve 10 is arranged on the balance pipe 9; the liquid inlet control valve 5 and the liquid outlet control valve 6 are electrically connected with the output end of the controller 11.

The device also comprises a low liquid level alarm 12 and a high liquid level alarm 13 which are electrically connected with the output end of the controller 11, wherein a first liquid level meter 14, a second liquid level meter 15, a third liquid level meter 16 and a fourth liquid level meter 17 which are electrically connected with the input end of the controller 11 are sequentially arranged on the side wall of the tank body 1 above the liquid outlet pipe 4 from bottom to top; the first liquid level meter 14, the second liquid level meter 15, the third liquid level meter 16 and the fourth liquid level meter 17 can detect the liquid level height in the tank body 1 in real time and transmit the detected information to the controller 11, and the controller 11 can control the low liquid level alarm 12 and the high liquid level alarm 13 to give out an alarm and open and close the liquid inlet control valve 5 and the liquid outlet control valve 6;

when benzene is filled in the tank body 1, firstly, the liquid outlet control valve 6 is closed, the liquid inlet control valve 5 and the liquid inlet stop valve 21 are opened, benzene liquid flows into the tank body 1 through the liquid inlet pipe 3, the liquid level in the tank body 1 rises along with the inflow of the liquid, the floating disc 7 rises along with the rising of the liquid, the air pressure above the floating disc is increased, the breather valve 10 is opened, and nitrogen above the floating disc 7 enters the nitrogen storage tank 2 through the balance pipe 9;

in the benzene filling process, when the liquid level reaches the height of the third liquid level meter 16, the controller 11 controls the high liquid level alarm 13 to give an alarm to prompt a worker that the liquid level in the tank body 1 reaches the high liquid level, and the worker closes the liquid inlet control valve 5. If the staff can't close in time into liquid control valve 5, the liquid level continues to rise to the height of fourth level gauge 17, and fourth level gauge 17 sends a signal to controller 11, and controller 11 will directly close into liquid control valve 5, prevents that the interior liquid level of jar body 1 from crossing.

When the benzene liquid in the tank body 1 is unloaded, the liquid inlet control valve 5 and the liquid inlet stop valve 21 are closed, the liquid outlet control valve 6 is opened, the benzene liquid in the tank body 1 is discharged through the liquid outlet pipe 4, the height of the floating disc 7 is reduced, the air pressure above the floating disc is reduced, and at the moment, the nitrogen in the nitrogen storage tank 2 enters the tank body 1 through the breather valve 10 to balance the pressure;

in the benzene unloading process, when the liquid level is lower than the height of the second liquid level meter 15, the controller 11 controls the low liquid level alarm 12 to give an alarm to prompt a worker that the liquid level is low and the liquid outlet control valve 6 is closed. If the staff can not in time close out liquid control valve 6 this moment, when the liquid level continues to reduce to first level gauge 14's height, first level gauge 14 sends the signal to controller 11, and controller 11 will directly close out liquid control valve 6, prevents that floating disc 7 height is less than the feed liquor position, can't play the effect of isolated gas.

In the whole process of charging and discharging benzene, the edge of the floating disc 7 is fixed with the sealing ring 8 which is in sliding contact with the inner wall of the tank body 1, so that only nitrogen is sucked and discharged in the process, the pollution environment caused by the outward discharge of the gas carrying benzene in the benzene charging process can be avoided, the problem of pollution products caused by the fact that the outside air enters the tank body 1 during benzene discharging is solved, and the product quality is ensured.

Example 2: as shown in fig. 2, the overall structure is the same as that of embodiment 1, except that a cofferdam 18 is arranged at the periphery of the tank 1, a plurality of benzene concentration detectors 19 electrically connected with the input end of the controller 11 are fixed at the inner side of the cofferdam 18, and the benzene concentration detectors 19 can detect the benzene concentration around the tank 1 in real time and transmit the benzene concentration to the controller 11 so as to find out the benzene leakage in time; the emergency pool further comprises an emergency pool 20, a liquid inlet stop valve 21 is arranged on the liquid inlet pipe 3 at the inlet end of the liquid inlet control valve 5, the liquid inlet pipe 3 between the liquid inlet stop valve 21 and the liquid inlet control valve 5 is communicated with the emergency pool 20 through a discharge pipe 22, and a discharge control valve 23 is arranged at the inlet end of the discharge pipe 22; if benzene leaks in the process of storing benzene, after the benzene concentration detector 19 on the inner side of the cofferdam 18 detects that the concentration is abnormal, the liquid inlet control valve 5 is closed to cut off the liquid inlet, the liquid outlet valve 23 is opened, the liquid sent from the liquid inlet pipe 3 is sent into the accident pool 20, and the liquid outlet control valve 6 is opened to unload the benzene liquid in the tank body 1, so that potential safety hazards are eliminated.

Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit the same; although the present invention has been described in detail with reference to the foregoing embodiments, it should be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; such modifications and substitutions do not depart from the spirit and scope of the present invention.

Claims (4)

1. The benzene storage device for the coal coking system comprises a tank body and is characterized by further comprising a nitrogen storage tank, wherein the lower part of the tank body is communicated with a liquid inlet pipe and a liquid outlet pipe, and a liquid inlet control valve and a liquid outlet control valve are respectively mounted on the liquid inlet pipe and the liquid outlet pipe; a floating disc is arranged in the tank body above the liquid inlet control valve in a vertically sliding manner, and a sealing ring in sliding contact with the inner wall of the tank body is fixed at the edge of the floating disc; the top of the tank body is communicated with the nitrogen storage tank through a balance pipe, and a breather valve is arranged on the balance pipe; the liquid inlet control valve and the liquid outlet control valve are electrically connected with the output end of the controller.

2. The benzene storage device for the coal coking system according to claim 1, further comprising a low liquid level alarm and a high liquid level alarm electrically connected with the output end of the controller, wherein a first liquid level meter, a second liquid level meter, a third liquid level meter and a fourth liquid level meter electrically connected with the input end of the controller are sequentially arranged on the side wall of the tank body above the liquid outlet pipe from bottom to top.

3. The benzene storage device for the coal coking system according to any one of claims 1 or 2, characterized in that a cofferdam is arranged at the periphery of the tank body, and a plurality of benzene concentration detectors electrically connected with the input end of the controller are fixed at the inner side of the cofferdam.

4. The benzene storage device for the coal coking system according to claim 3, further comprising an accident pool, wherein a liquid inlet stop valve is installed on the liquid inlet pipe at the inlet end of the liquid inlet control valve, the liquid inlet pipe between the liquid inlet stop valve and the liquid inlet control valve is communicated with the accident pool through a discharge pipe, and a discharge control valve is installed at the inlet end of the discharge pipe.

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