Coal gas purification device

Abstract

The utility model discloses a coal gas purification device which comprises a purification bin, cooling water is stored at the lower end in the purification bin, a cooling pipe group is arranged in the cooling water in the purification bin, two ends of the cooling pipe group are respectively provided with a connector pipe extending towards the outside of the purification bin, and the connector pipes on the two sides are respectively provided with a gas supply pipe and a conveying pipe. A plurality of spraying pipes are arranged in the purification bin corresponding to the position above the conveying pipe, and a filter is arranged at the position, corresponding to cooling water, of one side of the purification bin. According to the utility model, the cooling pipe group is arranged in the purification bin, the cooling pipe group is connected with the gas supply pipe and the conveying pipe for feeding gas into the purification bin again, and the spraying pipe at the top of the purification bin is matched, so that the coal gas is cooled and then returns to the purification bin to be filtered and purified, and particulate impurities in the coal gas are filtered out; therefore, the synchronous operation of cooling and purifying the coal gas is realized, the investment of equipment is saved, and the coal gas treatment efficiency is improved.

Description

Technical Field

[0001] This utility model relates to the field of gas equipment technology, and in particular to a gas purification device. Background Technology

[0002] Blast furnace gas is a byproduct of blast furnace ironmaking. It is a combustible gas mainly composed of carbon monoxide (CO), carbon dioxide (CO2), nitrogen (N2), hydrogen (H2), and a small amount of hydrocarbons. After preparation, the gas is a high-temperature gas and needs to be cooled before transportation to prevent damage to downstream equipment and pipelines, thus protecting the equipment. Furthermore, because the gas contains many impurities, which not only affect its quality and performance but may also damage the environment and equipment, it also needs to be filtered. Currently, cooling and purification require different equipment for gas processing, which undoubtedly increases equipment investment and affects the efficiency of gas processing. Utility Model Content

[0003] The purpose of this utility model is to avoid the shortcomings of the prior art and provide a gas purification device, thereby effectively solving the shortcomings of the prior art.

[0004] To achieve the above objectives, the technical solution adopted by this utility model is as follows: a gas purification device, including a purification chamber, an exhaust port at the top of the purification chamber, cooling water at the lower end of the purification chamber, a cooling pipe assembly in the cooling water within the purification chamber, connector pipes extending outward from both ends of the cooling pipe assembly, one side of the connector pipe being connected to a gas supply pipe, and the other side being connected to a conveying pipe, the conveying pipe extending into the purification chamber and horizontally positioned above the cooling water, several air outlets at the lower end of the conveying pipe within the purification chamber, several spray pipes positioned above the conveying pipes within the purification chamber, spray heads at the lower ends of the spray pipes, a filter positioned on one side of the purification chamber corresponding to the cooling water, a discharge pipe connected to the filter, a drain pump positioned on the discharge pipe, and a return pipe also positioned on the side wall of the purification chamber, both the discharge pipe and the return pipe being connected to a cooling water tank.

[0005] Furthermore, the cooling pipe assembly includes two symmetrically arranged distribution boxes, the connector pipes are respectively located on the outside of the two distribution boxes, and a number of distribution pipes are arranged between the distribution boxes, the distribution pipes being connected to the distribution boxes.

[0006] Furthermore, a number of heat exchange fins are evenly distributed on the diversion pipe.

[0007] Furthermore, the filter includes a filter tube, one end of which is disposed on the purification chamber and communicates with the cooling water in the purification chamber, the other end of which is connected to the discharge pipe, a filter screen is disposed at the port of the filter tube connected to the purification chamber, and a filter element is disposed inside the filter tube.

[0008] Furthermore, a baffle is provided at the port where the discharge pipe connects to the filter pipe, and the baffle is provided with water passage holes, and the baffle restricts the filter element inside the filter pipe.

[0009] Furthermore, a wave-shaped baffle is horizontally placed inside the purification chamber at the position corresponding to the delivery pipe and the spray pipe, and a number of air passage holes are evenly distributed on the baffle.

[0010] Furthermore, a drain pipe is installed at the bottom of the purification chamber, and a drain valve is installed on the drain pipe.

[0011] Furthermore, the bottom of the purification chamber is constricted, and the drain pipe is located at the bottom of the constricted structure of the purification chamber.

[0012] The above-mentioned technical solution of this utility model has the following beneficial effects: By setting a cooling pipe group in the purification chamber, the cooling pipe group is connected to a gas supply pipe and a conveying pipe for resupplying gas into the purification chamber. In conjunction with the spray pipe at the top of the purification chamber, the gas is cooled and then returned to the purification chamber for filtration and purification, thereby filtering out particulate impurities in the gas. This achieves simultaneous operation of gas cooling and purification, saves equipment investment, and improves the efficiency of gas treatment. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the main cross-sectional structure of an embodiment of the present utility model;

[0014] Figure 2 for Figure 1 Enlarged view of point A in the middle. Detailed Implementation

[0015] To better understand the above-mentioned objectives, features and advantages of this utility model, the present utility model will be further described in detail below with reference to the accompanying drawings and specific embodiments. It should be noted that, unless otherwise specified, the embodiments and features in the embodiments of this application can be combined with each other.

[0016] Many specific details are set forth in the following description in order to provide a full understanding of the present invention. However, the present invention may also be implemented in other ways different from those described herein. Therefore, the scope of protection of the present invention is not limited to the specific embodiments disclosed below.

[0017] like Figure 1-2As shown, the gas purification device described in this embodiment includes a purification chamber 1. An exhaust port 2 is located at the top of the purification chamber 1. Cooling water is stored at the lower end of the purification chamber 1. A cooling pipe assembly is installed within the cooling water in the purification chamber 1. Connecting pipes 3 extending outwards from both ends of the cooling pipe assembly are respectively provided. One connecting pipe 3 is connected to a gas supply pipe 4, and the other connecting pipe 3 is connected to a conveying pipe 5. The conveying pipe 5 extends into the purification chamber 1 and is horizontally positioned above the cooling water. Several gas outlets 6 are provided at the lower end of the portion of the conveying pipe 5 located inside the purification chamber 1. Several spray pipes 7 are installed above the corresponding conveying pipes 5 inside the purification chamber 1. Spray heads 8 are installed at the lower end of the spray pipes 7. A filter is installed on one side of the purification chamber 1 at the position corresponding to the cooling water. A discharge pipe 9 is connected to the filter. A drain pump 10 is installed on the discharge pipe 9. A return pipe 11 is also installed on the side wall of the purification chamber 1. Both the discharge pipe 9 and the return pipe 11 are connected to the cooling water tank. The discharge pipe 9 and the return pipe 11 enable the cooling water inside the purification chamber 1 to circulate. The cooling water enters the cooling water tank for cooling and reuse.

[0018] The cooling pipe assembly includes two symmetrically arranged distribution boxes 12, with connector pipes 3 respectively located on the outside of the two distribution boxes 12. Several distribution pipes 13 are arranged between the distribution boxes 12, and the distribution pipes 13 are connected to the distribution boxes 12.

[0019] Several heat exchange fins 14 are evenly distributed on the diversion pipe 13.

[0020] The distribution box 12 and the distribution pipe 13 work together to divide the gas, thereby improving the heat exchange efficiency between the gas and the cooling water.

[0021] The filter includes a filter tube 15. One end of the filter tube 15 is installed on the purification chamber 1 and is connected to the cooling water in the purification chamber 1. The other end of the filter tube 15 is connected to the discharge pipe 9. A filter screen 16 is installed at the port of the filter tube 15 connected to the purification chamber 1. A filter element 17 is installed inside the filter tube 15.

[0022] A baffle 18 is provided at the port where the discharge pipe 9 is connected to the filter pipe 15. The baffle 18 has a water passage hole 18a and restricts the filter element 17 inside the filter pipe 15.

[0023] Preferably, the filter element 17 is a filter cotton or filter paper tube.

[0024] Inside the purification chamber 1, a wave-shaped baffle 19 is horizontally placed between the corresponding conveying pipe 5 and the spray pipe 7. Several air passage holes 19a are evenly distributed on the baffle 19. The filtered water sprayed by the spray pipe 7 is directly sprayed onto the baffle 19, so that water droplets are attached to the surface of the baffle 19. When the gas is conveyed upward, it will collide with the baffle 19. At this time, particulate impurities in the gas will be sprayed out and captured by the water droplets on the baffle 19. The impurities will fall off with the water droplets, thereby achieving the filtration of impurities.

[0025] The bottom of the purification chamber 1 is equipped with a drain pipe 20, and a drain valve 21 is installed on the drain pipe 20.

[0026] The bottom of the purification chamber 1 is constricted, and the drain pipe 20 is located at the bottom of the constricted structure of the purification chamber 1.

[0027] The working principle of this utility model is as follows: The high-temperature coal gas produced is transported to the distribution box 12 on one side through the gas supply pipe 4 and the connector pipe 3. At this time, the coal gas will be divided and flow in each distribution pipe 13. Finally, the coal gas will converge in the distribution box 12 on the other side and be transported back to the interior of the purification chamber 1 through the connector pipe 3 and the conveying pipe 5. After the coal gas enters the cooling pipe group, the cooling water will cool the coal gas in the cooling pipe group. Due to the high temperature of the coal gas, it will cause the cooling water in the purification chamber 1 to generate water mist. Thus, when the coal gas is transported to the interior of the purification chamber 1 through the gas outlet 6 on the conveying pipe 5, the rising water mist will also adsorb some of the particulate impurities in the coal gas. At the same time, the spray head 8 on the spray pipe 7 sprays filtered water in the form of water mist, thereby covering the interior of the purification chamber 1 and spraying it onto the baffle plate 19. Thus, when the flue gas rises, the water mist will capture the particulate impurities in the coal gas again, and the impurities adsorbed by the water mist will fall off with the water droplets. In the cooling water, the purified gas is discharged through the exhaust port at the top of the purification chamber 1 and enters the subsequent processing equipment. Since the cooling water will heat up during the cooling operation, the drain pump 10 will pump the cooling water in the purification chamber 1 to the cooling water tank through the discharge pipe 9, i.e., the filter, for cooling operation. Then, the cooled water in the cooling water tank is sent back to the purification chamber 1 through the water pump and return pipe 11 for cooling operation. When the cooling water passes through the filter, it will first be filtered through the filter screen 16 and filter element 17 in the filter pipe 15 to prevent impurities in the cooling water in the purification chamber 1 from entering the drain pump 10 and causing damage to the water pump. The discharge pipe 9 and the filter pipe 15 can be connected to clean the inside of the filter pipe 15. Replacing the filter element 17 and cleaning the filter screen 16 can remove the filtered impurities. As the filtration time increases, impurities in the cooling water will also accumulate at the bottom of the purification chamber 1. At this time, opening the drain valve 21 can discharge the sedimented impurities in the cooling water.

[0028] The embodiments of this utility model are given for illustrative and descriptive purposes only, and are not intended to be exhaustive or to limit the utility model to the forms disclosed. Many modifications and variations will be apparent to those skilled in the art. The embodiments were chosen and described in order to better illustrate the principles and practical applications of this utility model, and to enable those skilled in the art to understand this utility model and design various embodiments with various modifications suitable for a particular purpose.

Claims

1. A coal gas cleaning apparatus, characterized by: The purification bin is provided with an exhaust port at the top, and a cooling water tank at the bottom, and a cooling pipe group is arranged in the cooling water tank, both ends of the cooling pipe group are provided with joint pipes extending to the outside of the purification bin, one side of the joint pipe is connected with a gas supply pipe, and the other side of the joint pipe is connected with a conveying pipe, the conveying pipe extends to the inside of the purification bin and is horizontally arranged above the cooling water, a plurality of gas outlets are arranged at the lower end of the conveying pipe arranged in the purification bin, a plurality of spray pipes are arranged in the purification bin at positions corresponding to the position above the conveying pipe, a filter is arranged at a position corresponding to the cooling water on one side of the purification bin, a discharge pipe is connected to the filter, a water pump is arranged on the discharge pipe, a backflow pipe is further arranged on the side wall of the purification bin, and the discharge pipe and the backflow pipe are both connected with the cooling water tank.

2. The coal gas cleaning apparatus according to claim 1, characterized in that: The cooling pipe group comprises two symmetrical distribution boxes, and the joint pipes are arranged outside the two distribution boxes, respectively, and a plurality of distribution pipes are arranged between the distribution boxes and communicate with the distribution boxes.

3. The coal gas cleaning apparatus according to claim 2, characterized in that: A plurality of heat exchange fins are uniformly arranged on the distribution pipes.

4. The coal gas cleaning apparatus of claim 1, wherein: The filter comprises a filter pipe, one end of the filter pipe is arranged on the purification bin and communicates with the cooling water in the purification bin, the other end of the filter pipe is connected with the discharge pipe, a filter screen is arranged at the port of the end of the filter pipe connected with the purification bin, and a filter core is arranged in the filter pipe.

5. The coal gas cleaning apparatus of claim 4, wherein: A baffle is arranged at the port of the end of the discharge pipe connected with the filter pipe, a water passing hole is arranged on the baffle, and the baffle limits the filter core in the filter pipe.

6. The coal gas cleaning apparatus of claim 1, wherein: A wave-shaped baffle plate is horizontally arranged in the purification bin at a position corresponding to the conveying pipe and the spray pipe, and a plurality of air passing holes are uniformly arranged on the baffle plate.

7. The coal gas cleaning apparatus of claim 1, wherein: A sewage discharge pipe is arranged at the bottom of the purification bin, and a sewage discharge valve is arranged on the sewage discharge pipe.

8. The coal gas cleaning apparatus of claim 7, wherein: The bottom of the purification bin is in the shape of a neck, and the sewage discharge pipe is arranged at the bottom end of the neck structure of the purification bin.

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