CN218349271U - Coke oven gas pretreatment device - Google Patents

Abstract

The utility model relates to the technical field of coke-oven gas pretreatment, in particular to a coke-oven gas pretreatment device, which discharges coke-oven gas into medium temperature water in a cooling bin through a gas supply mechanism, so that the medium temperature water in the cooling bin absorbs the heat in the coke-oven gas to form hot water, the coke-oven gas is primarily cooled, the coke-oven gas rises, the low temperature water is atomized and sprayed out through a plurality of groups of atomizing nozzles, so that the low temperature water absorbs the heat in the coke-oven gas to form medium temperature water, the medium temperature water falls to the bottom of the cooling bin and is secondarily cooled, the coke-oven gas is discharged through a gas outlet of the cooling bin, hot water at the bottom of the cooling bin is discharged into a heat exchange device by using a filter device for heat exchange, the water after heat exchange returns to the plurality of groups of atomizing nozzles through a circulating device, thereby reducing the waste of heat and improving the practicability of equipment; comprises a cooling bin and a plurality of groups of atomizing nozzles; the device also comprises a circulating device, a sewage discharge device, a heat exchange device, a filtering device, an air supply mechanism and a base.

Description

Coke oven gas pretreatment device

Technical Field

The utility model relates to a technical field of coke-oven gas preliminary treatment especially relates to a coke-oven gas preprocessing device.

Background

The coke oven gas is also called coke oven gas, because the combustible components are more, the coke oven gas belongs to high-heating value gas, crude gas or crude gas, and refers to that several kinds of bituminous coal are prepared into coking coal, after high-temperature dry distillation is carried out in the coke oven, coke and tar products are produced, and simultaneously, a combustible gas is produced and is a byproduct of the coking industry, and the coke oven gas needs to be cooled after being discharged so as to be further processed and used.

The existing treatment method generally discharges coke-oven gas into a cooling bin, sprays water through an atomizing nozzle to cool the coke-oven gas, but the heat is difficult to be recycled, so that the heat waste is caused, the practicability is poor, and the existing equipment needs to be improved.

SUMMERY OF THE UTILITY MODEL

In order to solve the technical problem, the utility model provides a through mechanism of supplying gas with the warm water of coke-oven gas emission to cooling storehouse bottom in, make the warm water in the bottom of cooling storehouse absorb the heat in the coke-oven gas and become hot water, and carry out preliminary cooling to the coke-oven gas, later the coke-oven gas rises, discharge the multiunit atomizer with low temperature water through circulating device, atomize blowout with low temperature water through the multiunit atomizer, make the heat in the low temperature water absorption coke-oven gas become well warm water, fall in the bottom in the cooling storehouse again, and carry out secondary cooling to the coke-oven gas, later discharge the coke-oven gas after cooling through the gas vent at cooling storehouse top, reuse filter equipment will cool down the hot water of storehouse bottom and discharge to heat transfer device in, carry out the heat exchange, derive the heat in the hot water, the water after will exchanging through circulating device returns the heat again to the multiunit atomizer simultaneously, carry out recycling, later when clearing up the inside in cooling storehouse, discharge the mud of cooling storehouse bottom through discharge device, thereby reduce the waste of heat, improve the practicality of equipment.

The utility model relates to a coke oven gas pretreatment device, which comprises a cooling bin and a plurality of groups of atomizing nozzles; the circulating device is arranged at the bottom end of the cooling bin, the circulating device is arranged at the top of the cooling bin, a plurality of groups of atomizing spray heads are all arranged on the circulating device, the sewage discharging device and the air supply mechanism are all arranged at the bottom of the cooling bin, the sewage discharging device is positioned below the air supply mechanism, the filtering mechanism is arranged at the right end of the cooling bin, and the heat exchange device is arranged at the top end of the base;

the inside of the cooling bin of the air supply mechanism box supplies air, the circulating device conveys water, the sewage discharge device conveys sludge in the cooling bin, the filtering device filters discharged hot water, and the heat exchange mechanism leads out heat in the hot water;

the coke oven gas is discharged into the warm water at the bottom in the cooling bin through the gas supply mechanism, so that the warm water in the bottom in the cooling bin absorbs the heat in the coke oven gas and becomes hot water, the coke oven gas is primarily cooled, then the coke oven gas rises, the low-temperature water is discharged out of the multiple groups of atomizing spray heads through the circulating device, the low-temperature water is atomized and sprayed out through the multiple groups of atomizing spray heads, the low-temperature water absorbs the heat in the coke oven gas and becomes medium-temperature water, the medium-temperature water falls on the bottom in the cooling bin and is secondarily cooled by the coke oven gas, then the cooled coke oven gas is discharged out through the exhaust port at the top of the cooling bin, the hot water at the bottom of the cooling bin is discharged into the heat exchange device through the filtering device for heat exchange, the heat in the hot water is guided out, the discharged water after heat exchange is returned into the multiple groups of atomizing spray heads through the circulating device for recycling, and when the interior of the cooling bin is cleaned, the sludge at the bottom of the cooling bin is discharged through the filtering device, thereby reducing the waste of heat, and improving the practicability of the equipment.

Preferably, the air supply mechanism comprises an exhaust pipe and a plurality of groups of one-way valves, a liquid level sensor is arranged on the inner wall of the cooling bin, a second water inlet valve is arranged at the left end of the cooling bin, the right end of the exhaust pipe extends into the cooling bin from the left end of the cooling bin, the exhaust pipe is positioned below the liquid level sensor, and the bottom ends of the plurality of groups of one-way valves are connected with the top end of the exhaust pipe; water is discharged into the cooling bin through the second water inlet valve, the liquid level of the bottom in the cooling bin is detected through the liquid level sensor, the multiple groups of one-way valves are submerged by the liquid level of the bottom of the cooling bin, then the coke oven gas is discharged into the exhaust pipe, and the coke oven gas in the exhaust pipe is sprayed into the warm water at the bottom of the cooling bin through the multiple groups of one-way valves, so that the practicability of the device is improved.

Preferably, the circulating device comprises a circulating pump, a water spraying pipe and a circulating pipe, the left end of the circulating pump is connected with the top of the right end of the cooling bin, the right end of the water spraying pipe is connected with a water outlet of the circulating pump, the left end of the water spraying pipe extends into the cooling bin, the top ends of the multiple groups of atomizing nozzles are connected with the bottom end of the water spraying pipe, one end of the circulating pipe is connected with a water suction port of the circulating pump, and the other end of the circulating pipe is installed on the heat exchange device; the circulating pump is opened to discharge the water after heat exchange into the multiple groups of atomizing nozzles, the water is sprayed out through the multiple groups of atomizing nozzles, and the coke oven gas is cooled, so that the practicability of the equipment is improved.

Preferably, the filtering device comprises a filtering box, multiple groups of filtering screens, a first drainage pump and a second drainage pump, the left end of the filtering box is connected with the right end of the cooling bin, the multiple groups of filtering screens are all installed inside the filtering box, the left end of the first drainage pump is connected with the right end of the filtering box, the left end of the first drainage pump is provided with a first suction port, the right end of the first drainage pump is provided with a first discharge pipe, the first suction port of the first drainage pump is communicated with the inside of the filtering screen, the first discharge pipe of the first drainage pump is communicated with the inside of the heat exchange device, the top end of the second drainage pump is connected with the bottom end of the filtering box, the bottom of the right end of the second drainage pump is provided with a second suction port, the top of the right end of the second drainage pump is provided with a second discharge pipe, and the second discharge pipe of the second drainage pump is communicated with the inside of the filtering box; open the hot water suction of first drain pump in with the cooling storehouse and to filter the case, after multiunit filter screen filters, the rethread first drain pump is arranged hot water into to heat transfer device, later when clearing up the multiunit filter screen, is connected the second water absorption mouth of second drain pump with the water source, opens the second drain pump and arranges the clear water into to the filter case in, carries out the back flush to the multiunit filter screen, flushes back the impurity on the multiunit filter screen to the cooling storehouse in to improve equipment's practicality.

Preferably, the heat exchange device comprises a heat exchange box, a heat dissipation pipe, a first water inlet valve, a drain valve and a temperature sensor, the bottom end of the heat exchange box is connected with the top end of the base, the heat dissipation pipe is arranged inside the heat exchange box, the left ends of the first water inlet valve and the drain valve are both connected with the right end of the heat exchange box, the left end of the temperature sensor extends into the heat exchange box from the right end of the heat exchange box, and the circulation pipe and a first discharge pipe of the first drain pump are both communicated with the inside of the heat dissipation pipe; in discharging water to the heat transfer case through first water intaking valve, first drainage pump discharges hot water to the cooling tube simultaneously, and the heat through the cooling tube in with the hot water is leading-in to heat transfer incasement aquatic, makes the water of heat transfer incasement intensifies, detects the temperature in the first water intaking valve through temperature sensor simultaneously, opens the water discharge after the drain valve heaies up with the heat transfer incasement to improve equipment's practicality.

Preferably, the sewage discharging device comprises a driving motor, a spiral conveying shaft and a sewage discharging shaft, the bottom end of the driving motor is connected with the top end of the base, the right end of the spiral conveying shaft is connected with the left end of the driving motor, the left end of the spiral conveying shaft extends into the cooling bin, and the right end of the sewage discharging shaft is connected with the left end of the cooling bin; and the driving motor is started to rotate the spiral conveying shaft, sludge is conveyed from right to left, and the sewage discharging shaft is opened to discharge the sludge, so that the practicability of the equipment is improved.

Preferably, the cooling device further comprises a rotational flow plate, the rotational flow plate is arranged inside the cooling bin, and the rotational flow plate is positioned above the water spray pipe; the cyclone plate is used for dehumidifying the rising coke oven gas and reducing the humidity of the coke oven gas, thereby improving the practicability of the equipment.

Compared with the prior art, the beneficial effects of the utility model are that: the coke oven gas is discharged into warm water at the bottom in the cooling bin through the gas supply mechanism, so that the warm water in the bottom in the cooling bin absorbs the heat in the coke oven gas to form hot water, the coke oven gas is primarily cooled, then the coke oven gas rises, the low-temperature water is discharged out of the multiple groups of atomizing nozzles through the circulating device, the low-temperature water is atomized and sprayed out through the multiple groups of atomizing nozzles, the low-temperature water absorbs the heat in the coke oven gas to form medium-temperature water, the medium-temperature water falls on the bottom in the cooling bin and is secondarily cooled, then the cooled coke oven gas is discharged out through the exhaust port at the top of the cooling bin, the hot water at the bottom of the cooling bin is discharged into the heat exchange device through the filtering device for heat exchange, the heat in the hot water is led out, the discharged water is returned into the multiple groups of atomizing nozzles through the circulating device for recycling, and when the interior of the cooling bin is cleaned, the sludge at the bottom of the cooling bin is discharged through the filtering device, thereby reducing the waste of the heat and improving the practicability of the equipment.

Drawings

Fig. 1 is a schematic front sectional view of the present invention;

FIG. 2 is a schematic view of the heat pipe of the present invention showing an enlarged axial view;

FIG. 3 is a schematic view of the vortex plate of the present invention showing an enlarged top view;

in the drawings, the reference numbers: 1. a cooling bin; 2. an atomizing spray head; 3. a base; 4. an exhaust pipe; 5. A one-way valve; 6. a circulation pump; 7. a water spray pipe; 8. a circulation pipe; 9. a filter box; 10. filtering with a screen; 11. a first drainage pump; 12. a second drain pump; 13. a heat exchange box; 14. a radiating pipe; 15. A first water inlet valve; 16. a drain valve; 17. a temperature sensor; 18. a drive motor; 19. a screw conveying shaft; 20. a sewage draining shaft; 21. a swirl plate; 22. a liquid level sensor; 23. a second water inlet valve.

Detailed Description

In order to facilitate understanding of the present invention, the present invention will be described more fully hereinafter with reference to the accompanying drawings. The present invention may be embodied in many different forms and is not limited to the embodiments described herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete.

Example 1

A cavity is arranged inside the cooling bin 1, an exhaust port is formed in the top end of the cooling bin 1, the base 3 is installed at the bottom end of the cooling bin 1, the circulating device is installed at the top of the cooling bin 1, the multiple groups of atomizing nozzles 2 are all installed on the circulating device, the sewage discharging device and the air supply mechanism are all installed at the bottom of the cooling bin 1, the sewage discharging device is located below the air supply mechanism, the filtering mechanism is installed at the right end of the cooling bin 1, and the heat exchange device is installed at the top end of the base 3;

the inside of the cooling bin 1 of the air supply mechanism box supplies air, the circulating device conveys water, the sewage discharge device conveys sludge in the cooling bin 1, the filtering device filters discharged hot water, and the heat exchange mechanism leads out heat in the hot water;

the air supply mechanism comprises an exhaust pipe 4 and a plurality of groups of one-way valves 5, a liquid level sensor 22 is arranged on the inner wall of the cooling bin 1, a second water inlet valve 23 is arranged at the left end of the cooling bin 1, the right end of the exhaust pipe 4 extends from the left end of the cooling bin 1 to the inside of the cooling bin 1, the exhaust pipe 4 is positioned below the liquid level sensor 22, and the bottom ends of the plurality of groups of one-way valves 5 are connected with the top end of the exhaust pipe 4;

the circulating device comprises a circulating pump 6, a water spraying pipe 7 and a circulating pipe 8, the left end of the circulating pump 6 is connected with the top of the right end of the cooling bin 1, the right end of the water spraying pipe 7 is connected with a water outlet of the circulating pump 6, the left end of the water spraying pipe 7 extends into the cooling bin 1, the top ends of the multiple groups of atomizing nozzles 2 are connected with the bottom end of the water spraying pipe 7, one end of the circulating pipe 8 is connected with a water suction port of the circulating pump 6, and the other end of the circulating pipe 8 is installed on the heat exchange device;

the water is discharged into the cooling bin 1 through the second water inlet valve 23, the liquid level of the bottom in the cooling bin 1 is detected through the liquid level sensor 22, the liquid level of the bottom of the cooling bin 1 submerges a plurality of sets of one-way valves 5, then the coke oven gas is discharged into the exhaust pipe 4, the coke oven gas in the exhaust pipe 4 is sprayed into warm water at the bottom of the cooling bin 1 through the plurality of sets of one-way valves 5, the warm water in the bottom of the cooling bin 1 absorbs heat in the coke oven gas to form hot water, the coke oven gas is primarily cooled, then the coke oven gas rises, the heat-exchanged water is discharged into the plurality of sets of atomizing nozzles 2 by opening the circulating pump 6, the water is sprayed out through the plurality of sets of atomizing nozzles 2, the low-temperature water absorbs the heat in the coke oven gas to form intermediate-temperature water, the intermediate-temperature water falls into the bottom of the coke oven gas in the cooling bin 1 again and is secondarily cooled by focusing, the hot water at the bottom of the cooling bin 1 is discharged into the heat exchange device by the filtering device, the circulating device, and the sludge is recycled, and the sludge is discharged from the cooling bin 1.

Example 2

A cavity is arranged in the cooling bin 1, an exhaust port is formed in the top end of the cooling bin 1, the base 3 is installed at the bottom end of the cooling bin 1, the circulating device is installed at the top of the cooling bin 1, the multiple groups of atomizing nozzles 2 are installed on the circulating device, the sewage discharging device and the air supply mechanism are installed at the bottom of the cooling bin 1, the sewage discharging device is located below the air supply mechanism, the filtering mechanism is installed at the right end of the cooling bin 1, and the heat exchange device is installed at the top end of the base 3;

the inside of the cooling bin 1 of the air supply mechanism box supplies air, the circulating device conveys water, the sewage discharge device conveys sludge in the cooling bin 1, the filtering device filters discharged hot water, and the heat exchange mechanism leads out heat in the hot water;

the filtering device comprises a filtering box 9, a plurality of groups of filtering screens 10, a first drainage pump 11 and a second drainage pump 12, wherein the left end of the filtering box 9 is connected with the right end of the cooling bin 1, the groups of filtering screens 10 are all installed inside the filtering box 9, the left end of the first drainage pump 11 is connected with the right end of the filtering box 9, the left end of the first drainage pump 11 is provided with a first suction and discharge port, the right end of the first drainage pump 11 is provided with a first discharge pipe, the first suction and discharge port of the first drainage pump 11 is communicated with the inside of the filtering box 10, the first discharge pipe of the first drainage pump 11 is communicated with the inside of the heat exchange device, the top end of the second drainage pump 12 is connected with the bottom end of the filtering box 9, the bottom of the right end of the second drainage pump 12 is provided with a second suction and discharge port, the top of the right end of the second drainage pump 12 is provided with a second discharge pipe, and the second discharge pipe of the second drainage pump 12 is communicated with the inside of the filtering box 9;

the heat exchange device comprises a heat exchange box 13, a radiating pipe 14, a first water inlet valve 15, a water discharge valve 16 and a temperature sensor 17, wherein the bottom end of the heat exchange box 13 is connected with the top end of the base 3, the radiating pipe 14 is arranged in the heat exchange box 13, the left ends of the first water inlet valve 15 and the water discharge valve 16 are both connected with the right end of the heat exchange box 13, the left end of the temperature sensor 17 extends into the heat exchange box 13 from the right end of the heat exchange box 13, and the circulating pipe 8 and a first discharge pipe of the first water discharge pump 11 are both communicated with the interior of the radiating pipe 14;

discharging coke oven gas into warm water at the bottom in a cooling bin 1 through an air supply mechanism, enabling the warm water at the bottom in the cooling bin 1 to absorb heat in the coke oven gas to form hot water, primarily cooling the coke oven gas, then rising the coke oven gas, discharging the low-temperature water out of a plurality of groups of atomizing nozzles 2 through a circulating device, atomizing and spraying the low-temperature water through a plurality of groups of atomizing nozzles 2, enabling the low-temperature water to absorb heat in the coke oven gas to form medium-temperature water, then falling to the bottom in the cooling bin 1, performing secondary cooling on the coke oven gas, then discharging the cooled coke oven gas through an exhaust port at the top of the cooling bin 1, then opening a first water discharge pump 11 to suck the hot water in the cooling bin 1 into a filter box 9, filtering through a plurality of groups of filter screens 10, then discharging the hot water into a heat dissipation tube 14 through the first water discharge pump 11, then cleaning a plurality of groups of filter screens 10, connecting a second water suction port of a drainage pump 12 with a water source, opening the second water suction port of the second water discharge pump 12 to discharge the filter box 9, backwashing the plurality of filter screens 10, flushing impurities on the plurality of groups of filter screens 10, discharging impurities back into the cooling bin 1, discharging the first water through a water discharge valve 13 to a water discharge pump 13 to a water inlet valve 13 of a heat exchange tank for discharging the heat transfer tank, simultaneously, and discharging the sludge in the first heat transfer tank 13, and discharging the sludge in the first heat transfer tank, detecting device, and discharging the sludge in the first heat transfer tank, and discharging water tank 13, thereby reducing the waste of heat and improving the practicability of the equipment.

As shown in figures 1 to 3, the utility model discloses a coke oven gas pretreatment device, during operation, firstly, water is discharged into a cooling chamber 1 through a second water inlet valve 23, the liquid level at the bottom in the cooling chamber 1 is detected through a liquid level sensor 22, so that the liquid level at the bottom of the cooling chamber 1 submerges a plurality of sets of one-way valves 5, then coke oven gas is discharged into an exhaust pipe 4, the coke oven gas in the exhaust pipe 4 is sprayed into the warm water at the bottom of the cooling chamber 1 through the plurality of sets of one-way valves 5, the warm water in the bottom of the cooling chamber 1 absorbs the heat in the coke oven gas to form hot water, and the coke oven gas is primarily cooled, then the coke oven gas rises, the heat-exchanged water is discharged into a plurality of sets of atomizing nozzles 2 by opening a circulating pump 6, the water is sprayed out through a plurality of sets of atomizing nozzles 2, the heat in the coke oven gas is absorbed by the low-temperature water to form intermediate-temperature water, and then falls on the bottom in the cooling chamber 1, secondly cooling coke oven gas, dehumidifying the rising coke oven gas through a cyclone plate 21, discharging the cooled coke oven gas through an exhaust port at the top of a cooling bin 1, opening a first drainage pump 11 to suck hot water in the cooling bin 1 into a filter box 9, filtering the hot water by a plurality of groups of filter screens 10, discharging the hot water into a radiating pipe 14 through the first drainage pump 11, cleaning the plurality of groups of filter screens 10, connecting a second water suction port of a second drainage pump 12 with a water source, opening the second drainage pump 12 to discharge clean water into the filter box 9, back flushing the plurality of groups of filter screens 10 to flush impurities on the plurality of groups of filter screens 10 back into the cooling bin 1, discharging the water into a heat exchange box 13 through a first water inlet valve 15, simultaneously discharging the hot water into the radiating pipe 14 through the first drainage pump 11, and guiding heat in the hot water into the heat exchange box 13 through the radiating pipe 14, the water in the heat exchange box 13 is heated, the temperature in the first water inlet valve 15 is detected through the temperature sensor 17, the water heated in the heat exchange box 13 is discharged by opening the drain valve 16, the water subjected to heat exchange returns to the multiple groups of atomizing nozzles 2 through the circulating device for recycling, and then when the inside of the cooling bin 1 is cleaned, the driving motor 18 is started to rotate the spiral conveying shaft 19, the sludge is conveyed from right to left, and the sewage discharging shaft 20 is opened to discharge the sludge.

The utility model discloses the main function who realizes does: and (3) carrying out graded cooling on the coke oven gas, recycling the heat in the coke oven gas, and cleaning the inside of the coke oven gas (01) through a pollution discharge device.

The installation mode, the connection mode or the setting mode of the coke oven gas pretreatment device of the utility model are common mechanical modes, and the pretreatment device can be implemented as long as the beneficial effects can be achieved; the utility model discloses a circulating pump 6, first drain pump 11, second drain pump 12, temperature sensor 17, driving motor 18 and level sensor 22 of coke-oven gas preprocessing device are purchase on the market, and this industry technical staff only need according to its subsidiary service instruction install and operate can, and need not the technical staff creative work in this field.

All technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used herein in the description of the invention is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. As used herein, the term "and/or" includes any and all combinations of one or more of the associated listed items.

The foregoing is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, a plurality of modifications and variations can be made without departing from the technical principle of the present invention, and these modifications and variations should also be regarded as the protection scope of the present invention.

Claims (7)

1. A coke oven gas pretreatment device comprises a cooling bin (1) and a plurality of groups of atomizing nozzles (2); the device is characterized by further comprising a circulating device, a sewage discharging device, a heat exchange device, a filtering device, an air supply mechanism and a base (3), wherein a cavity is arranged in the cooling bin (1), an air outlet is formed in the top end of the cooling bin (1), the base (3) is installed at the bottom end of the cooling bin (1), the circulating device is installed at the top of the cooling bin (1), a plurality of groups of atomizing spray heads (2) are installed on the circulating device, the sewage discharging device and the air supply mechanism are installed at the bottom of the cooling bin (1), the sewage discharging device is located below the air supply mechanism, the filtering mechanism is installed at the right end of the cooling bin (1), and the heat exchange device is installed at the top end of the base (3);

the inside of mechanism case cooling storehouse (1) of supplying gas supplies gas, and circulating device carries water, and waste fitting discharging carries the mud in cooling storehouse (1), and filter equipment filters the exhaust hot water, and heat transfer mechanism exports the heat in the hot water.

2. The coke oven gas pretreatment device of claim 1, wherein the gas supply mechanism comprises an exhaust pipe (4) and a plurality of sets of check valves (5), a liquid level sensor (22) is arranged on the inner wall of the cooling bin (1), a second water inlet valve (23) is arranged at the left end of the cooling bin (1), the right end of the exhaust pipe (4) extends from the left end of the cooling bin (1) to the inside of the cooling bin (1), the exhaust pipe (4) is located below the liquid level sensor (22), and the bottom ends of the plurality of sets of check valves (5) are connected with the top end of the exhaust pipe (4).

3. The coke oven gas pretreatment device of claim 1, wherein the circulation device comprises a circulation pump (6), a water spray pipe (7) and a circulation pipe (8), the left end of the circulation pump (6) is connected with the top of the right end of the cooling bin (1), the right end of the water spray pipe (7) is connected with the water outlet of the circulation pump (6), the left end of the water spray pipe (7) extends into the cooling bin (1), the top ends of the multiple groups of atomization nozzles (2) are connected with the bottom end of the water spray pipe (7), one end of the circulation pipe (8) is connected with the water suction port of the circulation pump (6), and the other end of the circulation pipe (8) is installed on the heat exchange device.

4. The coke oven gas pretreatment device according to claim 1, characterized in that the filter device comprises a filter box (9), a plurality of sets of filter screens (10), a first drain pump (11) and a second drain pump (12), wherein the left end of the filter box (9) is connected with the right end of the cooling bin (1), the plurality of sets of filter screens (10) are all installed inside the filter box (9), the left end of the first drain pump (11) is connected with the right end of the filter box (9), the left end of the first drain pump (11) is provided with a first suction port, the right end of the first drain pump (11) is provided with a first discharge port, the first suction port of the first drain pump (11) is communicated with the inside of the filter screen (10), the first discharge port of the first drain pump (11) is communicated with the inside of the heat exchange device, the top end of the second drain pump (12) is connected with the bottom end of the filter box (9), and the bottom of the right end of the second drain pump (12) is provided with a second suction port, the top of the right end of the second drain pump (12) is provided with a second discharge port, and the second discharge port of the second drain pump (12) is communicated with the inside of the filter box (9).

5. The coke oven gas pretreatment device of claim 3, wherein the heat exchange device comprises a heat exchange box (13), a heat dissipation pipe (14), a first water inlet valve (15), a water discharge valve (16) and a temperature sensor (17), the bottom end of the heat exchange box (13) is connected with the top end of the base (3), the heat dissipation pipe (14) is installed inside the heat exchange box (13), the left ends of the first water inlet valve (15) and the water discharge valve (16) are both connected with the right end of the heat exchange box (13), the left end of the temperature sensor (17) extends into the heat exchange box (13) from the right end of the heat exchange box (13), and the circulation pipe (8) and the first discharge pipe of the first water discharge pump (11) are both communicated with the inside of the heat dissipation pipe (14).

6. The coke oven gas pretreatment device according to claim 1, characterized in that the blowdown device comprises a driving motor (18), a spiral conveying shaft (19) and a blowdown shaft (20), wherein the bottom end of the driving motor (18) is connected with the top end of the base (3), the right end of the spiral conveying shaft (19) is connected with the left end of the driving motor (18), the left end of the spiral conveying shaft (19) extends into the cooling bin (1), and the right end of the blowdown shaft (20) is connected with the left end of the cooling bin (1).

7. The coke oven gas pretreatment device of claim 1, further comprising a swirl plate (21), wherein the swirl plate (21) is installed inside the cooling bin (1), and the swirl plate (21) is located above the spray pipe (7).

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