A device for purifying the gas of a smelting plant

Abstract

The utility model provides a kind of purification device of smelting equipment coal gas, with the characteristics of reasonable structure, high purification efficiency, stable and reliable operation, wherein cleaning area is realized high-efficiency dust removal and adsorption by countercurrent washing and airflow adjustment, speed regulation area utilizes centrifugal governor to promote gas-liquid separation, and settling type dehydration area combines funnel-shaped water falling structure to realize effective separation and recovery of moisture and impurities. The device can significantly reduce harmful components such as mechanical water, dust and hydrogen chloride in the coal gas, effectively alleviate the problem of pipeline corrosion and fouling, reduce the risk of coal gas leakage, and improve system safety and economy; At the same time, through the recycling of water resources and energy recovery, energy saving and emission reduction are realized, which meets the requirements of green production.

Description

Technical Field

[0001] This utility model relates to the field of blast furnace and converter production, and in particular to a purification device for coal gas from smelting equipment. Background Technology

[0002] Industrial gas is an important byproduct of blast furnace and converter smelting processes. Its composition is complex, often containing harmful substances such as moisture, dust, hydrogen chloride, sulfides, and nitrogen oxides. During gas transportation and use, these impurities easily lead to scaling, blockage, and corrosion in pipelines, seriously affecting the safe transportation of gas and the stable operation of downstream equipment.

[0003] Currently, metallurgical enterprises commonly use drainage facilities added to gas pipelines to absorb some dust and chlorine-containing components through condensate. However, this method has significant limitations: the pipeline network is extensive, requiring large-scale drainage and steam tracing systems, resulting in high investment costs. Furthermore, due to corrosion and blockage issues, the equipment lifespan is generally short, requiring frequent maintenance and exhibiting low reliability. In addition, condensate has limited adsorption capacity for dust and chlorine-containing substances, failing to completely purify the gas, leading to increased siltation and corrosion inside the pipelines. This not only increases the maintenance burden but also poses safety hazards such as gas leaks, explosions, and personnel poisoning.

[0004] Therefore, there is an urgent need in this field to develop a purification device for smelting equipment gas that integrates cooling, cleaning, adsorption and dehydration functions, which can efficiently remove harmful components during system operation, improve gas quality, and ensure production safety and stability. Utility Model Content

[0005] The purpose of this invention is to provide a purification device for coal gas from smelting equipment, so as to solve the problems existing in the prior art.

[0006] To achieve the above objectives, this utility model provides the following solution:

[0007] This utility model provides a purification device for coal gas from smelting equipment, including a coal gas conveying pipeline, wherein the coal gas conveying pipeline is provided with the following sequentially arranged along the coal gas conveying direction:

[0008] The cleaning zone is equipped with a first airflow regulator and a counter-current cleaner.

[0009] Speed ​​regulation zone, wherein the speed regulation zone is equipped with a second airflow regulator;

[0010] The sedimentation dewatering zone and the bottom of the washing zone are both connected to the drainage zone.

[0011] Preferably, the gas transmission pipeline is provided with a diameter-changing structure, the diameter of which is larger than the diameter of the gas transmission pipeline.

[0012] Preferably, the countercurrent cleaner includes a circulation pipe that is connected to the bottom of the water inlet area, a circulation pump is provided on the circulation pipe, and a nozzle is provided at the end of the circulation pipe.

[0013] Preferably, the nozzle is arranged in the opposite direction to the gas delivery direction.

[0014] Preferably, the second airflow regulator is a centrifugal regulator, and a plurality of centrifugal regulators are symmetrically arranged within the speed regulation zone.

[0015] Preferably, the water-falling area has a funnel-shaped structure.

[0016] Preferably, a sewage pipe is provided at the bottom of the water-falling area, and a solenoid valve is provided on the sewage pipe.

[0017] The present invention achieves the following beneficial technical effects compared to the prior art:

[0018] This utility model provides a purification device for coal gas from smelting equipment, characterized by its reasonable structure, high purification efficiency, and stable and reliable operation. The cleaning zone achieves efficient dust removal and adsorption through counter-current cleaning and airflow regulation; the speed regulation zone utilizes a centrifugal regulator to promote gas-liquid separation; and the sedimentation dehydration zone, combined with a funnel-shaped water-falling structure, effectively separates and recovers moisture and impurities. This device can significantly reduce harmful components such as mechanical water, dust, and hydrogen chloride in coal gas, effectively alleviate pipeline corrosion and scaling problems, reduce the risk of gas leakage, and improve system safety and economy. Simultaneously, through water resource recycling and energy recovery, it achieves energy conservation and emission reduction, meeting the requirements of green production. Attached Figure Description

[0019] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0020] Figure 1 A schematic diagram of the gas purification device for smelting equipment provided by this utility model. Detailed Implementation

[0021] The serial numbers assigned to components in this document, such as "first" and "second," are used only to distinguish the described objects and have no sequential or technical meaning. The terms "connection" and "linkage" used in this application, unless otherwise specified, include both direct and indirect connections (linkages). In the description of this utility model, it should be understood that the terms "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," and "counterclockwise," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this utility model and for simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0022] In this utility model, unless otherwise explicitly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "on top of," and "over" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0023] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0024] The purpose of this invention is to provide a purification device for coal gas from smelting equipment, so as to solve the problems existing in the prior art.

[0025] To make the above-mentioned objectives, features and advantages of this utility model more apparent and understandable, the utility model will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0026] Example 1:

[0027] This embodiment provides a purification device for coal gas from smelting equipment, such as... Figure 1 As shown, the system includes a gas transmission pipeline 1, and along the gas transmission direction, a cleaning zone 2, a speed regulation zone 5, and a settling dewatering zone 7 are sequentially arranged. The bottoms of both the cleaning zone 2 and the settling dewatering zone 7 are connected to the drainage zone 8.

[0028] Specifically, the cleaning zone 2 is equipped with a first airflow regulator 3 and a counter-current cleaner 4. The first airflow regulator 3 is used to control the gas flow rate to form a stable flow field in the cleaning zone. It can be a grid-type airflow regulator, which controls the airflow magnitude by controlling the opening of the grid.

[0029] Furthermore, the counter-current cleaner 4 includes a circulation pipe 10, a circulation pump 11, and nozzles 12. The circulation pipe 10 is connected to the bottom of the water-falling area 8, and the circulation pump 11 is located on the circulation pipe 10 to transport water from the water-falling area to the nozzles 12. The nozzles 12 are arranged in the opposite direction to the gas conveying direction, so that the cleaning water comes into counter-current contact with the gas, thereby enhancing the adsorption and cleaning effect on dust and harmful gases.

[0030] Furthermore, the speed regulation zone 5 is equipped with a second airflow regulator 6. The second airflow regulator 6 is a centrifugal regulator, and two centrifugal regulators are symmetrically arranged in the speed regulation zone 5 to further regulate the gas flow rate and direction, thereby promoting gas-liquid separation.

[0031] Furthermore, the sedimentation dehydration zone 7 is used to automatically separate water vapor and tiny droplets in the gas by gravity. The drainage zone 8 has a funnel-shaped structure, which facilitates the collection and discharge of cleaning waste liquid. A sewage pipe 13 is provided at the bottom of the drainage zone 8, and a solenoid valve 14 is provided on the sewage pipe 13 for periodically or automatically discharging accumulated dirt.

[0032] Furthermore, the gas transmission pipeline 1 is provided with a variable diameter structure 9, the diameter of which is larger than other parts of the gas transmission pipeline 1. In this embodiment, a conical cylinder structure is adopted, which facilitates the deployment of cleaning, adjustment and separation structures to reduce flow rate, extend residence time and improve cleaning and dehydration efficiency.

[0033] The working process of this utility model is as follows: After the industrial gas enters the cleaning zone 2, its flow rate is stabilized by the first airflow regulator 3. Cleaning water is sprayed into the counter-current cleaner 4, contacting the gas in the opposite direction and adsorbing harmful components such as dust and hydrogen chloride. Subsequently, the gas enters the speed regulation zone 5, where the flow rate is further adjusted by the second airflow regulator 6 to promote gas-liquid separation. Finally, it enters the sedimentation dehydration zone 7, where water and residual particles settle, resulting in a clean gas output system. The cleaning waste liquid is collected in the drainage zone 8, with a portion reused through the circulation pipe 10 and the remainder discharged through the sewage pipe 13.

[0034] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0035] It should be noted that the components mentioned in the above embodiments are all general standard parts or components known to those skilled in the art. Their structures and principles can be learned by those skilled in the art through technical manuals or conventional experimental methods.

[0036] This utility model uses specific examples to illustrate its principles and implementation methods. The above description of the embodiments is only for the purpose of helping to understand the method and core idea of ​​this utility model. At the same time, for those skilled in the art, there will be changes in the specific implementation methods and application scope based on the idea of ​​this utility model. In summary, the content of this specification should not be construed as a limitation of this utility model.

Claims

1. A purification device for coal gas from a smelting plant, comprising a coal gas transmission pipeline, characterized in that, The gas transmission pipeline is provided with the following sequentially along the gas transmission direction: The cleaning zone is equipped with a first airflow regulator and a counter-current cleaner. Speed ​​regulation zone, wherein the speed regulation zone is equipped with a second airflow regulator; The sedimentation dewatering zone and the bottom of the washing zone are both connected to the drainage zone.

2. The gas purification device for smelting equipment according to claim 1, characterized in that, The gas transmission pipeline is equipped with a variable diameter structure, the diameter of which is larger than the diameter of the gas transmission pipeline.

3. The gas purification device for smelting equipment according to claim 1, characterized in that, The countercurrent cleaner includes a circulation pipe that is connected to the bottom of the water inlet area. A circulation pump is installed on the circulation pipe, and a nozzle is installed at the end of the circulation pipe.

4. The gas purification device for smelting equipment according to claim 3, characterized in that, The nozzles are arranged in the opposite direction to the gas delivery direction.

5. The gas purification device for smelting equipment according to claim 1, characterized in that, The second airflow regulator is a centrifugal regulator, and multiple centrifugal regulators are symmetrically arranged in the speed regulation zone.

6. The gas purification device for smelting equipment according to claim 1, characterized in that, The water-falling area has a funnel-shaped structure.

7. The gas purification device for smelting equipment according to claim 1, characterized in that, The bottom of the water-falling area is equipped with a sewage pipe, and the sewage pipe is equipped with a solenoid valve.

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