Coke oven gas blast condensation circulating system

Abstract

The utility model discloses a coke oven gas blast condensation circulating system which comprises an air compressor, a hot water refrigerator, a condensing tower and a jacket arranged on the outer wall of the condensing tower, an air outlet of the air compressor is connected with a vortex tube, a cold air outlet of the vortex tube is communicated with the top of the jacket, and a hot air outlet of the vortex tube is connected with a gas-water heat exchanger. A cold water outlet and a hot water outlet of the heat exchanger are respectively communicated with the hot water refrigerating machine, the condensing tower is internally divided into an upper cavity and a lower cavity through a partition plate, a coal gas outlet is formed in the top of the upper cavity, multiple layers of spraying assemblies are arranged in the upper cavity at intervals up and down, and a coal gas inlet is formed in the lower part of the upper cavity; a cold air inlet communicated with the jacket is formed in the lower portion of the lower cavity, an exhaust port is formed in the top of the lower cavity, a water outlet is formed below the exhaust port, and a descending pipe communicated with the upper cavity and the lower cavity is arranged on the partition plate. In conclusion, the heat exchanger has the advantages of being reasonable in structure, high in heat exchange efficiency and good in cooling effect.

Description

Technical Field

[0001] This utility model relates to the technical field of coke oven gas purification equipment, specifically to a coke oven gas blower condensation circulation system. Background Technology

[0002] Coke oven gas, also known as coke oven gas, crude coal gas, or raw coal gas, is a combustible gas produced during the high-temperature dry distillation of coke ovens made from a blend of several types of bituminous coal to produce coke and tar products. It is a byproduct of the coking process. The main components of coke oven gas are hydrogen and methane, but it also contains small amounts of recoverable raw materials or impurities such as tar, benzene, ammonia, sulfur, and dust. To obtain these recoverable raw materials and to obtain relatively pure gas that meets usage requirements, coke oven gas must undergo purification treatment.

[0003] The purification process for coke oven gas generally includes condensation, ammonia removal, and benzene washing. During condensation, tar, low-boiling-point compounds, and water liquefy, thus separating from the coke oven gas, while also removing some ammonia. In existing technologies, condensation typically takes place in a horizontal tube cooler, where the coke oven gas is cooled by a coolant. However, after a period of use, the coolant temperature gradually rises, reducing the condensation efficiency. Furthermore, a large amount of tar and other impurities easily adhere to the horizontal tubes, further reducing the condensation effect. Therefore, developing a coke oven gas forced-air condensation circulation system with a reasonable structure, high heat exchange efficiency, and good cooling effect is objectively necessary. Utility Model Content

[0004] The purpose of this invention is to provide a coke oven gas blower condensation circulation system with a reasonable structure, high heat exchange efficiency, and good cooling effect.

[0005] The purpose of this utility model is achieved as follows: it includes an air compressor, a hot water chiller, a condensing tower, and a jacket installed on the outer wall of the condensing tower. The air outlet of the air compressor is connected to a vortex tube, the cold air outlet of the vortex tube is connected to the top of the jacket, the hot air outlet of the vortex tube is connected to a gas-water heat exchanger, and the cold water outlet and hot water outlet of the heat exchanger are respectively connected to the hot water chiller. The condensing tower is divided into an upper chamber and a lower chamber by a partition. A gas outlet is provided at the top of the upper chamber. Multiple layers of spray components are arranged vertically in the upper chamber, and the water inlet of each layer of spray components is connected to the cold water outlet of the hot water chiller. A gas inlet is provided at the bottom of the upper chamber, and a cold air inlet connected to the jacket is provided at the bottom of the lower chamber. An exhaust port is provided at the top, and a drain port is provided below the exhaust port, which is connected to the hot water inlet of the hot water chiller. A downcomer is provided on the partition, connecting the upper chamber and the lower chamber, and the lower end of the downcomer extends into the lower chamber below the cold air inlet.

[0006] Furthermore, an inclined tube layer and a dehumidifier are arranged sequentially from bottom to top in the upper cavity above the spray assembly.

[0007] Furthermore, heat sinks are installed on the outer wall of the condenser tower inside the jacket.

[0008] Furthermore, gas distributors are installed in the lower part of both the upper and lower cavities, and the two gas distributors are connected to the gas inlet and the cold gas inlet, respectively.

[0009] Furthermore, a stirrer is installed in the lower cavity.

[0010] Furthermore, an oil-water separator and a sedimentation tank are sequentially installed along the water flow direction on the pipeline between the drain outlet and the hot water chiller.

[0011] This invention features a reasonable structure. During operation, coke oven gas enters the upper chamber through the gas inlet and rises continuously, coming into counter-current contact with water mist sprayed from the spray assembly. The water mist absorbs heat and impurities such as tar from the coke oven gas, achieving the purpose of cooling it. After the coke oven gas temperature drops, it is discharged from the top gas outlet. Meanwhile, the water mist, having absorbed heat from the coke oven gas, falls to the bottom of the upper chamber and enters the lower chamber through the downcomer. Simultaneously, the air compressor sends high-pressure air into the vortex tube, and the cold air outlet of the vortex tube discharges cooler air. This cool air enters the top of the jacket and then flows continuously downwards. During this flow, it first absorbs the heat dissipated by the coke oven gas in the upper chamber and then absorbs the heat from the circulating cooling water in the lower chamber. The heat emitted is then introduced into the circulating cooling water in the lower chamber through the cold air inlet. As it rises in the circulating cooling water, it agitates the water to prevent sedimentation. During contact with the circulating cooling water, it absorbs the heat from the water, lowering the temperature of the circulating cooling water. The cooled circulating cooling water is then discharged from the exhaust port. The cooled circulating cooling water is then sent to the hot water chiller through the drain port. At the same time, the hot air discharged from the hot air outlet of the vortex tube enters the air-water heat exchanger, heating the water in the air-water heat exchanger before being discharged. The heated hot water, at a higher temperature, is sent to the hot water chiller to provide cooling energy, cooling the circulating cooling water in the hot water chiller to obtain a lower temperature circulating cooling water, which is then returned to the spray assembly for continued recycling. This invention incorporates a vortex tube, a gas-water heat exchanger, and a hot water chiller. The vortex tube generates hot and cold air; the cold air cools the coke oven gas and circulating cooling water, while the hot air heats the water in the gas-water heat exchanger. The hot water chiller then uses the heat from the water to cool the circulating cooling water. This method ensures the circulating cooling water remains at a low temperature for an extended period, thereby guaranteeing the condensation effect and efficiency of the coke oven gas. Secondly, a spray system is installed in the upper cavity, distributing water mist throughout the cavity and ensuring full contact with the rising coke oven gas, resulting in excellent heat exchange efficiency and effectively cooling the gas. Simultaneously, it removes impurities such as tar from the coke oven gas, purifying it. Finally, this invention recycles the circulating cooling water used for cooling the coke oven gas, reducing water waste and improving water resource utilization. In summary, this invention has the advantages of a reasonable structure, high heat exchange efficiency, and good cooling effect. Attached Figure Description

[0012] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0013] In the diagram: 1-Air compressor, 2-Hot water chiller, 3-Condensing tower, 4-Jacket, 5-Vortex tube, 6-Gas-water heat exchanger, 7-Upper cavity, 8-Lower cavity, 9-Spray assembly, 10-Drain outlet, 11-Downcomer, 12-Inclined tube layer, 13-Dehumidifier, 14-Heat fin, 15-Air distributor, 16-Agitator, 17-Oil-water separator, 18-Sedimentation tank. Detailed Implementation

[0014] The present invention will be further described below with reference to the accompanying drawings, but this description is not intended to limit the present invention in any way. Any changes or improvements made based on the present invention shall fall within the protection scope of the present invention.

[0015] like Figure 1 As shown, this utility model includes an air compressor 1, a hot water chiller 2, a condensing tower 3, and a jacket 4 installed on the outer wall of the condensing tower 3. Both the air compressor 1 and the hot water chiller 2 are existing devices. The hot water chiller 2 is used to reduce the temperature of the circulating cooling water using the energy of hot water. The air outlet of the air compressor 1 is connected to a vortex tube 5, which is existing technology. The vortex tube 5 can cause the high-speed airflow to generate vortices, separating it into cold and hot air streams. This utility model fully utilizes the two air streams generated. The cold air outlet of the vortex tube 5 is connected to the top of the jacket 4, and the hot air outlet of the vortex tube 5 is connected to a gas-water heat exchanger 6. The cold water outlet and hot water outlet of the gas-water heat exchanger 6 are connected to the hot water chiller 2. The condensing tower 3 is equipped with a partition... The plate is divided into an upper cavity 7 and a lower cavity 8. A gas outlet is provided at the top of the upper cavity 7. Multiple spray components 9 are arranged vertically and vertically inside the upper cavity 7. The spray components 9 are existing technology and are used to spray water mist formed by circulating cooling water in this utility model. The water inlet of each spray component 9 is connected to the cold water outlet of the hot water chiller 2. A gas inlet is provided at the bottom of the upper cavity 7. A cold air inlet connected to the jacket 4 is provided at the bottom of the lower cavity 8. An exhaust port is provided at the top. A drain port 10 is provided below the exhaust port and is connected to the hot water inlet of the hot water chiller 2. A downcomer 11 connecting the upper cavity 7 and the lower cavity 8 is provided on the partition plate. The lower end of the downcomer 11 extends into the lower cavity 8 below the cold air inlet.

[0016] This invention has a reasonable structure. During operation, coke oven gas enters the upper cavity 7 through the gas inlet and rises continuously, coming into countercurrent contact with the water mist sprayed from the spray assembly 9. The water mist absorbs heat and impurities such as tar from the coke oven gas, achieving the purpose of cooling the coke oven gas. After the temperature of the coke oven gas drops, it is discharged from the gas outlet at the top. The water mist, after absorbing heat from the coke oven gas, falls to the bottom of the upper cavity 7 and falls into the lower cavity 8 through the downcomer 11. At the same time, the air compressor 1 sends high-pressure air into the vortex tube 5. The cold air outlet of the vortex tube 5 discharges cold air at a lower temperature. The cold air enters the top of the jacket 4 and then flows continuously downward. During the flow, it first absorbs the heat emitted by the coke oven gas in the upper cavity 7 and then absorbs the heat from the circulating cooling in the lower cavity 8. The heat emitted by the water then enters the circulating cooling water in the lower cavity 8 through the cold air inlet. As it rises in the circulating cooling water, it agitates the circulating cooling water to prevent sedimentation. During the contact process with the circulating cooling water, it absorbs the heat from the circulating cooling water, reducing the temperature of the circulating cooling water. Then it is discharged from the exhaust port. The cooled circulating cooling water is sent to the hot water chiller 2 from the drain port 10. At the same time, the hot air discharged from the hot air outlet of the vortex tube 5 enters the air-water heat exchanger 6, heats the water in the air-water heat exchanger 6, and is then discharged. The heated hot water with a higher temperature is sent to the hot water chiller 2 to provide cooling energy, further cooling the circulating cooling water in the hot water chiller 2, resulting in a lower temperature circulating cooling water, which is then returned to the spray assembly 9 for continued recycling.

[0017] In this invention, a vortex tube 5, a gas-water heat exchanger 6, and a hot water chiller 2 are provided. The vortex tube 5 generates hot and cold air. The cold air is used to cool the coke oven gas and circulating cooling water, while the hot air is used to heat the water in the gas-water heat exchanger 6. Then, the heat of the water in the hot water chiller 2 is used to cool the circulating cooling water. Through this method, the temperature of the circulating cooling water can be kept at a low level for a long time, thereby ensuring the condensation effect and efficiency of the coke oven gas. Secondly, a spray assembly 9 is provided in the upper cavity 7. The sprayed water mist is dispersed throughout the upper cavity 7, which can fully contact the rising coke oven gas, thus achieving good heat exchange efficiency and effect. It can fully cool the coke oven gas and also remove impurities such as tar from the coke oven gas, purifying the coke oven gas. Finally, this invention recycles the circulating cooling water used to cool the coke oven gas, which can reduce water waste and improve water resource utilization.

[0018] The upper cavity 7 above the spray assembly 9 is provided with an inclined tube layer 12 and a dehumidifier 13 arranged sequentially from bottom to top. Both the inclined tube layer 12 and the dehumidifier 13 are existing technologies. When the present invention is in operation, the spray assembly 9 sprays water mist to cool the coke oven gas. The cooled coke oven gas will contain a large amount of water mist, which contains impurities such as tar. When passing through the inclined tube layer 12, the water mist continuously gathers and grows larger before dripping. The dehumidifier 13 can further remove the water mist from the coke oven gas, making the discharged coke oven gas purer and significantly reducing the waste and consumption of water resources, thereby improving the utilization rate of water resources.

[0019] Heat sinks 14 are installed on the outer wall of the condenser tower 3 inside the jacket 4. The heat sinks 14 are made of existing heat-conducting materials and are used to dissipate heat in the condenser tower 3, improve heat dissipation efficiency, and thus improve the cooling effect of coke oven gas and circulating cooling water.

[0020] Both the upper cavity 7 and the lower cavity 8 are equipped with gas distributors 15. The two gas distributors 15 are connected to the gas inlet and the cold gas inlet, respectively. The gas distributors 15 are existing technology and are used to evenly disperse the gas in the upper cavity 7 and the lower cavity 8, so that the coke oven gas and water mist in the upper cavity 7 are in uniform contact, and at the same time, the air bubbles in the lower cavity 8 are evenly dispersed in the circulating cooling water, so that the air bubbles are in uniform contact with the circulating cooling water.

[0021] A stirrer 16 is installed inside the lower cavity 8. The stirrer 16 is an existing device used to agitate the circulating cooling water in the lower cavity 8, so that the circulating cooling water and cold air bubbles are in a flowing state. On the one hand, it breaks up the cold air bubbles, forming more and smaller cold air bubbles, increasing the contact area between the bubbles and the circulating cooling water, thereby improving the cooling efficiency of the circulating cooling water. On the other hand, the circulating cooling water being in a flowing state can also improve its own heat dissipation effect, thereby improving its cooling effect.

[0022] An oil-water separator 17 and a sedimentation tank 18 are sequentially installed along the water flow direction on the pipeline between the drain outlet 10 and the hot water chiller 2. Both the oil-water separator 17 and the sedimentation tank 18 are existing equipment. The oil-water separator 17 is used to separate tar from the circulating cooling water, and the sedimentation tank 18 is used to settle impurities in the circulating cooling water. The circulating cooling water is purified after passing through the oil-water separator 17 and the sedimentation tank 18, which improves the purity of the circulating cooling water and prevents tar and impurities from clogging the subsequent equipment, pipelines and spray components 9, so that it has a better heat exchange efficiency with the coke oven gas and ensures the cooling effect of the coke oven gas.

Claims

1. A coke oven gas blower-condensation circulation system, comprising an air compressor (1), a hot water chiller (2), a condenser tower (3), and a jacket (4) disposed on the outer wall of the condenser tower (3), characterized in that The air outlet of the air compressor (1) is connected to a vortex tube (5). The cold air outlet of the vortex tube (5) is connected to the top of the jacket (4). The hot air outlet of the vortex tube (5) is connected to a gas-water heat exchanger (6). The cold water outlet and hot water outlet of the gas-water heat exchanger (6) are connected to the hot water chiller (2). The condensing tower (3) is divided into an upper cavity (7) and a lower cavity (8) by a partition. A gas outlet is provided at the top of the upper cavity (7). Multiple spray components (9) are arranged vertically and vertically in the upper cavity (7). Each spray component (9) The inlets of 9) are all connected to the cold water outlet of the hot water chiller (2). The lower part of the upper cavity (7) is provided with a gas inlet. The lower part of the lower cavity (8) is provided with a cold air inlet connected to the jacket (4). The top is provided with an exhaust port. Below the exhaust port is a drain port (10). The drain port (10) is connected to the hot water inlet of the hot water chiller (2). The partition is provided with a downcomer (11) connecting the upper cavity (7) and the lower cavity (8). The lower end of the downcomer (11) extends into the lower cavity (8) below the cold air inlet.

2. The coke oven gas blast condensation circulation system according to claim 1, characterized in that: The upper cavity (7) above the spray assembly (9) is provided with an inclined tube layer (12) and a dehumidifier (13) arranged from bottom to top.

3. The coke oven gas blast condensation circulation system according to claim 1, characterized in that: Heat sinks (14) are provided on the outer wall of the condenser tower (3) inside the jacket (4).

4. The coke oven gas blast condensation circulation system according to claim 1, characterized in that: Both the upper cavity (7) and the lower cavity (8) are equipped with gas distributors (15), and the two gas distributors (15) are connected to the gas inlet and the cold gas inlet, respectively.

5. A coke oven gas forced draft condensation circulation system according to claim 1, characterized in that: A stirrer (16) is provided inside the lower cavity (8).

6. The coke oven gas blast condensation circulation system according to claim 1, characterized in that: An oil-water separator (17) and a sedimentation tank (18) are sequentially installed along the water flow direction on the pipeline between the drain outlet (10) and the hot water chiller (2).

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