Gas cooling device

Abstract

The utility model relates to the technical field of coal gas cooling, and discloses a coal gas cooling device which comprises a tower body, an ammonia water tank is arranged at the bottom end of the tower body, a circulating pump is arranged at the bottom end of the ammonia water tank, an ammonia water heat exchanger is arranged at a water outlet of the circulating pump, and a refrigeration water system is arranged at the tail end of a cooling water inlet and a cooling water outlet of the ammonia water heat exchanger. An ammonia water outlet of the ammonia water heat exchanger is connected with a water conveying pipe, and a sprayer is mounted at the top end of the water conveying pipe and located in the tower body. Through the filter casing and the collecting cylinder, impurities in coal gas can be filtered, blockage of the filter casing is reduced, the utilization rate of ammonia water is increased, additional finished ammonia water replenishment to the system is reduced, and the alkalinity of the desulfurization system is effectively improved; through the turning plate and the waterproof hopper, gas rotates to form rotational flow to be fully mixed with ammonia water, so that the cooling efficiency of the gas is improved, the ammonia water is prevented from entering the gas inlet pipe, and the high efficiency of cooling the gas by using low-temperature ammonia water is ensured.

Description

TECHNICAL FIELD

[0001] The utility model relates to coal gas cooling technical field, concretely is a coal gas cooling device. BACKGROUND

[0002] Raw coal gas is the by-product of coking, which contains a large amount of moisture, tar, naphthalene and organic sulfur impurities generated from the carbonization chamber of the coke oven during the coking process. It needs to be desulfurized. Hydrogen sulfide and other sulfur compounds in raw coal gas need to be absorbed at a lower temperature, so the coal gas needs to be cooled to about 30℃ to enter the desulfurization tower for desulfurization.

[0003] Publication No. CN222313093U provides a cooling tower for coal gas purification, which includes a vertical tower and a circulating tank. From bottom to top, the vertical tower is provided with a coal gas diffuser, an ammonia water spraying pipe, a zeolite filter layer and a clean water sprinkling pipe. The coal gas diffuser is connected with the coal gas inlet pipe, and the clean water sprinkling pipe is connected with the clean water inlet pipe.

[0004] The above-mentioned cooling tower can adsorb ammonia in coal gas and reduce the amount of ammonia gas caused by heating of ammonia water. However, there are many impurities in raw coal gas, and the use rate of ammonia water is low after mixing with ammonia water, which is not convenient for filtering and cleaning. In addition, during the cooling process, the mixture of coal gas and ammonia water is not fully mixed, which reduces the cooling efficiency. UTILITY MODEL CONTENTS

[0005] The utility model aims to provide a coal gas cooling device to solve the technical problems in the background art.

[0006] To achieve the above-mentioned purpose, the utility model provides the following technical scheme:

[0007] A coal gas cooling device, comprising a tower body, an ammonia water tank is installed at the bottom end of the tower body, a circulating pump is installed at the bottom end of the ammonia water tank, an ammonia water heat exchanger is installed at the water outlet of the circulating pump, a refrigerated water system is installed at the cooling water inlet and outlet of the ammonia water heat exchanger, a water delivery pipe is connected at the ammonia water outlet of the ammonia water heat exchanger, a sprayer is installed at the top end of the water delivery pipe and inside the tower body, a demister is installed directly above the sprayer, a filtering mechanism is installed outside the tower body, a mixing mechanism is installed inside the tower body, the filtering mechanism comprises a cylinder, a gas delivery pipe and an air inlet pipe are installed through the outside of the cylinder, the air inlet pipe is installed through at the inside of the tower body at the end, a filter cover is fixedly installed at one end of the gas delivery pipe and inside the cylinder, a first motor is installed at the top of the cylinder, a group of brushes are installed at the bottom end of the output shaft of the first motor and through the inside of the filter cover, a dust collecting hopper is fixedly installed at the inner wall of the cylinder near the bottom end, a base is connected and installed at the bottom end of the cylinder, and a collecting cylinder is connected and installed at the bottom of the base.

[0008] Preferably, the top end of the filter cover is fixedly arranged with the cylinder body, and the outer diameter of the filter cover is smaller than the inner diameter of the cylinder body.

[0009] Preferably, the air inlet pipe is communicated with the inside of the filter cover, and the brush is slidingly arranged on the inner wall of the filter cover.

[0010] Preferably, the air inlet pipe is communicated with the inside of the cylinder body, and the diameter of the top of the dust collecting hopper is larger than the diameter of the bottom.

[0011] Preferably, the base is threadedly connected with the bottom of the cylinder body, the collecting cylinder is threadedly connected with the bottom of the base, and the collecting cylinder is communicated with the bottom end of the filter cover.

[0012] Preferably, the mixing mechanism comprises a second motor and a shaft, the second motor is arranged at the bottom end of the air inlet pipe, the shaft is fixedly connected with the top end of the output shaft of the second motor, a waterproof bucket is fixedly arranged at the bottom end of the outer portion of the shaft, a plurality of turning plates are fixedly arranged on the outer portion of the shaft, and a plurality of through holes are formed in the two surfaces of the turning plates.

[0013] Preferably, the shaft is vertically arranged in the air inlet pipe, and the top end of the air inlet pipe is in an open shape.

[0014] Preferably, the waterproof bucket is arranged above the bottom end of the air inlet pipe, and the plurality of turning plates are fixedly arranged on the outer portion of the shaft.

[0015] Compared with the prior art, the coal gas cooling device has the following beneficial effects:

[0016] 1) The coal gas cooling device comprises a filter mechanism, the raw coal gas enters the filter cover through the air inlet pipe, the impurities in the coal gas can be filtered, the utilization rate of ammonia water is improved, the additional addition of product ammonia water to the system is reduced, the alkalinity of the desulfurization system is effectively improved, the first motor drives the brush to rotate, the filtered impurities can be automatically removed, the blockage of the filter cover is reduced, and the collection and cleaning are facilitated.

[0017] 2) The coal gas cooling device comprises a mixing mechanism, the coal gas is discharged through the bottom end of the air inlet pipe, the second motor drives the shaft and the turning plates to rotate, the coal gas is rotated to form a cyclone, the coal gas is fully mixed with the ammonia water, the cooling efficiency of the coal gas is improved, the use of low-temperature ammonia water to cool the coal gas is efficient, the dripping ammonia water flows to the periphery through the waterproof bucket, and the ammonia water is prevented from entering the air inlet pipe. BRIEF DESCRIPTION OF DRAWINGS

[0018] Figure 1 It is an overall internal structure schematic view of the coal gas cooling device.

[0019] Figure 2 It is an internal structure schematic view of the filter mechanism.

[0020] Figure 3 It is the internal structure schematic view of the mixing mechanism in the embodiment of the utility model;

[0021] Figure 4 It is the internal front view of the whole in the embodiment of the utility model.

[0022] In the drawing: 1, tower body; 2, ammonia tank; 3, circulating pump; 4, ammonia water heat exchanger; 5, refrigeration water system; 6, water delivery pipe; 7, sprayer; 8, demister; 9, filtering mechanism; 10, mixing mechanism; 11, cylinder; 12, gas delivery pipe; 13, air inlet pipe; 14, filter cover; 15, first motor; 16, brush; 17, dust hopper; 18, base; 19, collection cylinder; 20, second motor; 21, shaft; 22, waterproof hopper; 23, flap; 24, through hole. DETAILED DESCRIPTION

[0023] The technical scheme in the embodiments of the utility model will be described clearly and completely below in conjunction with the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of the utility model.

[0024] Embodiment one

[0025] In combination Figures 1-4 A coal gas cooling device, including tower body 1, the bottom end of tower body 1 is installed with ammonia tank 2, the bottom end of ammonia tank 2 is installed with circulating pump 3, the water outlet of circulating pump 3 is installed with ammonia water heat exchanger 4, the cooling water inlet and outlet end of ammonia water heat exchanger 4 is installed with refrigeration water system 5, the ammonia water outlet of ammonia water heat exchanger 4 is connected with water delivery pipe 6, the top end of water delivery pipe 6 and inside tower body 1 is installed with sprayer 7, the directly upper side of sprayer 7 is installed with demister 8, the outside of tower body 1 is installed with filtering mechanism 9, the inside of tower body 1 is installed with mixing mechanism 10.

[0026] In combination Figure 2 And Figure 3 Further, filtering mechanism 9 includes cylinder 11, gas delivery pipe 12 and air inlet pipe 13 are installed through the outside of cylinder 11 respectively, the end of air inlet pipe 13 is installed through inside tower body 1, the end of gas delivery pipe 12 and inside cylinder 11 is fixedly installed with filter cover 14, the top of cylinder 11 is installed with first motor 15, the output shaft bottom end of first motor 15 and inside filter cover 14 is installed with a group of brushes 16, the inner wall of cylinder 11 and bottom end is fixedly installed with dust hopper 17, the bottom end of cylinder 11 is connectedly installed with base 18, the bottom of base 18 is connectedly installed with collection cylinder 19.

[0027] The top end of the filter cover 14 is fixedly installed between the cylinder body 11, and the outer diameter of the filter cover 14 is smaller than the inner diameter of the cylinder body 11. The impurity particles in the raw coal gas are filtered in the filter cover 14, and the filtered coal gas is transported into the tower body 1 through the gas inlet pipe 13.

[0028] The gas outlet pipe 12 is in communication with the inside of the filter cover 14, and the brush 16 is slidably arranged on the inner wall of the filter cover 14. The impurity particles on the inner wall of the filter cover 14 are removed by rotating the brush 16 driven by the first motor 15.

[0029] The gas inlet pipe 13 is in communication with the inside of the cylinder body 11, and the diameter of the top of the dust collecting hopper 17 is larger than the diameter of the bottom.

[0030] The base 18 is threadedly connected to the bottom of the cylinder body 11, and the collecting cylinder 19 is threadedly connected to the bottom of the base 18 and in communication with the bottom end of the filter cover 14. The collected impurity particles are collected by the collecting cylinder 19.

[0031] Specifically, the raw coal gas is transported into the filter cover 14 from the gas outlet pipe 12 by the air blower. The impurity particles in the raw coal gas are filtered by the filter cover 14 and transported into the tower body 1 through the gas inlet pipe 13 for cooling. The filtered impurities are removed by rotating the brush 16 driven by the first motor 15 and collected by the collecting cylinder 19.

[0032] Example Two

[0033] Referring to Figure 4 On the basis of Example One, it is further obtained that the mixing mechanism 10 comprises a second motor 20 and a shaft 21. The second motor 20 is installed at the bottom end of the gas inlet pipe 13. The shaft 21 is fixedly connected to the top end of the output shaft of the second motor 20. A waterproof bucket 22 is fixedly installed at the bottom end of the outside of the shaft 21. A plurality of flaps 23 are fixedly installed on the outside of the shaft 21. A plurality of through holes 24 are formed through the two faces of the flaps 23.

[0034] The shaft 21 is vertically penetrated in the inside of the gas inlet pipe 13. The bottom end of the gas inlet pipe 13 is open. The shaft 21 is driven to rotate by the second motor 20.

[0035] The waterproof bucket 22 is located directly above the bottom end of the gas inlet pipe 13. The plurality of flaps 23 are fixedly installed on the outside of the shaft 21. The waterproof bucket 22 prevents water from entering the gas inlet pipe 13. The coal gas is fully mixed with the water mist by rotating the flaps 23.

[0036] Specifically, the coal gas is discharged through the end of the gas inlet pipe 13, the second motor 20 drives the shaft rod 21 to rotate, the flap 23 drives the coal gas to rotate to form a cyclone, the sprayer 7 sprays ammonia water to mix with the coal gas to cool it, and the dripping ammonia water flows to the outside through the water guard 22 to prevent the ammonia water from entering the gas inlet pipe 13.

[0037] In actual operation, the air blower delivers the coal gas at about 50 DEG C in the working section to the tower body 1 through the gas conveying pipe 12 and the gas inlet pipe 13, the circulating pump 3 delivers the ammonia water in the ammonia water tank 2 to the ammonia water heat exchanger 4, the refrigeration water system 5 delivers the cooling water to the ammonia water heat exchanger 4 to cool the ammonia water to about 24 DEG C, and then the cooling water is delivered to the sprayer 7 through the water conveying pipe 6 to spray the coal gas to cool it to about 30 DEG C and then enter the desulfurization tower;

[0038] Since there are many impurities in the raw coal gas, when filtering, the raw coal gas is delivered to the inside of the filter cover 14, the impurities are filtered in the inside of the filter cover 14, and the filtered coal gas is delivered through the gas inlet pipe 13, when regularly cleaning, the first motor 15 is started to make the brush 16 slide on the inner wall of the filter cover 14 to clean the filtered impurities, the cleaned impurities fall into the collecting cylinder 19 for collection, the impurities passing through the filter holes of the filter cover 14 fall on the dust collecting hopper 17 and slide into the base 18, the dust collecting hopper 17 reduces the backflow of dust to facilitate subsequent regular cleaning;

[0039] When cooling and mixing, the coal gas is discharged through the inner end of the gas inlet pipe 13, the second motor 20 is started to drive the shaft rod 21 to rotate the flap 23, the coal gas is further rotated to form a cyclone through the flap 23, and then the coal gas is fully mixed with the sprayed ammonia water to improve the cooling efficiency of the coal gas, the dripping ammonia water flows to the outside through the water guard 22 to prevent entering the gas inlet pipe 13.

[0040] Although the embodiments of the utility model have been shown and described, it can be understood by those skilled in the art that various changes, modifications, replacements and variations can be made to the embodiments without departing from the principles and spirits of the utility model, the scope of the utility model is defined by the appended claims and their equivalents.

Claims

1. A coal gas cooling device, comprising a tower body (1), an ammonia water tank (2) is installed at the bottom end of the tower body (1), a circulating pump (3) is installed at the bottom end of the ammonia water tank (2), an ammonia water heat exchanger (4) is installed at the water outlet of the circulating pump (3), a refrigeration water system (5) is installed at the cooling water inlet and outlet ends of the ammonia water heat exchanger (4), a water delivery pipe (6) is connected at the ammonia water outlet of the ammonia water heat exchanger (4), a sprayer (7) is installed at the top end of the water delivery pipe (6) and inside the tower body (1), and a demister (8) is installed directly above the sprayer (7). The tower body (1) is externally provided with a filtering mechanism (9), and internally provided with a mixing mechanism (10); The filtering mechanism (9) comprises a cylinder (11), a gas inlet pipe (13) and a gas outlet pipe (12) are respectively arranged through the outer part of the cylinder (11), the tail end of the gas inlet pipe (13) is arranged through the inside of the tower body (1), the one end of the gas outlet pipe (12) and located inside the cylinder (11) is fixedly provided with a filter cover (14), the top of the cylinder (11) is provided with a first motor (15), the bottom end of the output shaft of the first motor (15) and arranged through the inside of the filter cover (14) is provided with a group of brushes (16), the inner wall of the cylinder (11) is fixedly provided with a dust collecting hopper (17) at the bottom end, the bottom end of the cylinder (11) is connected with a base (18), and the bottom of the base (18) is connected with a collecting cylinder (19).

2. A coal gas cooling device according to claim 1, characterized in that: The top end of the filter cover (14) and the cylinder (11) are fixedly arranged, and the diameter of the outer circle of the filter cover (14) is smaller than the inner diameter of the cylinder (11).

3. A coal gas cooling device according to claim 1, characterized in that: The gas inlet pipe (13) and the inside of the cylinder (11) are communicated, and the brushes (16) are arranged on the inner wall of the filter cover (14) in a sliding manner.

4. A coal gas cooling device according to claim 1, characterized in that: The gas inlet pipe (13) and the inside of the cylinder (11) are communicated, and the brushes (16) are arranged on the inner wall of the filter cover (14) in a sliding manner.

5. A coal gas cooling device according to claim 1, characterized in that: The bottom of the base (18) is threadedly connected with the bottom of the cylinder (11), and the collecting cylinder (19) is threadedly connected with the bottom of the base (18) and communicated with the bottom end of the filter cover (14).

6. A coal gas cooling device according to claim 1, characterized in that: The mixing mechanism (10) comprises a second motor (20) and a shaft rod (21), the second motor (20) is arranged at the bottom end of the tail end of the gas inlet pipe (13), the shaft rod (21) is fixedly connected with the top end of the output shaft of the second motor (20), the outer bottom end of the shaft rod (21) is fixedly provided with a waterproof hopper (22), and the outer part of the shaft rod (21) is fixedly provided with a plurality of turning plates (23), a plurality of through holes (24) are formed through the two surfaces of the turning plates (23).

7. A coal gas cooling device according to claim 6, characterised in that: The shaft rod (21) is vertically arranged through the inside of the gas inlet pipe (13), and the top of the tail end of the gas inlet pipe (13) is in an open shape.

8. A coal gas cooling device according to claim 6, characterized in that: The waterproof hopper (22) is located directly above the tail end of the gas inlet pipe (13), and a plurality of turning plates (23) are fixedly arranged on the outer part of the shaft rod (21).

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