A stainless steel plate pickling waste gas treatment device
Patent Information
- Application Number
- CN202522563994.4
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-12-03
- Publication Date
- 2026-09-08
- Estimated Expiration
- 2035-12-03
AI Technical Summary
如果这些废气未经有效处理直接排放到大气中，不仅会对周围环境造成严重污染，危害人体健康，还会腐蚀周边设备和建筑物；
本实用新型通过抽风机提供抽吸力，通过集气罩将不锈钢板酸洗槽周围产生的废气收集起来，并输送至过滤箱，废气进入过滤箱后首先经过滤板，较大颗粒的灰尘和杂质被过滤掉，然后废气撞击挡板，液滴和部分颗粒物附着在挡板上并沿挡板流下落入集污斗，实现废气的颗粒物去除，经过预处理的废气从吸收塔底部进入，向上流动通过填料层，同时，循环泵将吸收塔底部的吸收液输送至雾化喷头，雾化喷头将吸收液均匀地喷洒在填料层上，废气中的酸雾被吸收液吸收，从而实现酸雾的去除，当废气通过除雾筒时，废气中的液滴与丝网层碰撞并被吸附在丝网上，减少废气中的水分含量，经过除雾处理后的废气进入吸附箱，废气中的有害气体和微小颗粒物被活性炭颗粒吸附，从而进一步净化废气，提高废气的处理效果。
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Figure CN224723915U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the technical field of waste gas treatment devices, specifically a waste gas treatment device for pickling stainless steel plates. Background Technology
[0002] Pickling is a crucial step in the production of stainless steel sheets. Its purpose is to remove oxide scale and rust from the surface, improving the surface quality. However, pickling generates a large amount of waste gas, which mainly contains acid mist (such as sulfuric acid mist and nitric acid mist), harmful gases (such as nitrogen oxides and fluorides), and particulate matter. If this waste gas is released directly into the atmosphere without effective treatment, it will not only cause serious pollution to the surrounding environment and harm human health, but also corrode nearby equipment and buildings. Currently, some manufacturers often use spray towers to absorb acid mist when treating pickling waste gas from stainless steel plates. However, this method is not very effective at removing harmful gases and fine particulate matter that are difficult to dissolve in water, which affects the overall treatment effect of the pickling waste gas. Therefore, a stainless steel plate pickling waste gas treatment device is proposed. Utility Model Content
[0003] The purpose of this invention is to provide a stainless steel plate pickling waste gas treatment device to solve the problems mentioned in the background art.
[0004] To achieve the above objectives, this utility model provides the following technical solution: a stainless steel plate pickling waste gas treatment device, comprising a gas collection hood, a pretreatment mechanism, an acid mist absorption mechanism, a demisting mechanism, an activated carbon adsorption mechanism, and an exhaust fan connected in sequence; The pretreatment mechanism includes a filter box, the left side wall of the filter box is connected to the upper surface of the gas collection hood through a pipe, a filter plate is provided on the left side of the inner side wall of the filter box, a baffle is fixedly connected to the right side of the inner side wall of the filter box, the baffle is inclined, a sludge collection hopper is connected to the right side of the lower surface of the filter box, and a box cover is provided on the top of the filter box. The acid mist absorption mechanism includes an absorption tower. The middle of the left side wall of the absorption tower is connected to the right side wall of the filter box through a pipe. A packing layer is provided on the upper part of the inner side wall of the absorption tower. A support plate is fixedly connected to the top of the right side wall of the absorption tower. A circulation pump is installed on the upper surface of the support plate. One end of the liquid inlet of the circulation pump is connected to the bottom of the right side wall of the absorption tower through a pipe. One end of the liquid outlet of the circulation pump is connected to a spray pipe through a pipe. The left end of the spray pipe extends into the interior of the absorption tower and is connected to multiple atomizing nozzles. The demisting mechanism includes a demisting cylinder, the bottom of the left side wall of the demisting cylinder is connected to the top of the absorption tower through a pipe, a wire mesh layer is fixedly connected inside the demisting cylinder, the wire mesh layer is composed of multiple layers of metal wire mesh, and a cylinder cover is provided on the top of the demisting cylinder. The activated carbon adsorption mechanism includes an adsorption box. The left side wall of the adsorption box is connected to the upper part of the right side wall of the demister through a pipe. The adsorption box is filled with activated carbon particles. The top of the adsorption box is provided with a cover plate. The right side wall of the adsorption box is connected to the air inlet of the exhaust fan through a pipe. The air outlet of the exhaust fan is connected to an exhaust pipe.
[0005] As a further preferred embodiment of this technical solution: the bottom of the sludge collection hopper is connected to a drain pipe, and a drain valve is installed on the outer wall of the drain pipe.
[0006] As a further preferred embodiment of this technical solution: two limiting grooves are symmetrically opened on the left side of the inner wall of the filter box, and the filter plate is inserted into the inner wall of the limiting groove.
[0007] As a further preferred embodiment of this technical solution: a liquid addition pipe is connected to the middle of the front surface of the absorption tower, and a liquid addition valve is installed on the outer wall of the liquid addition pipe.
[0008] As a further preferred embodiment of this technical solution: the bottom of the front surface of the absorption tower is connected to a drain pipe, and a drain valve is installed on the outer wall of the drain pipe.
[0009] As a further preferred embodiment of this technical solution: the lower surface of the demister is connected to a drain pipe, and a sealing cap is threaded to the bottom of the outer side wall of the drain pipe.
[0010] Compared with the prior art, the beneficial effects of this utility model are: This invention utilizes a blower to provide suction, collecting the waste gas generated around the stainless steel pickling tank through a gas collection hood and conveying it to a filter box. Upon entering the filter box, the waste gas first passes through a filter plate, removing larger dust and impurities. Then, the waste gas impacts a baffle plate, causing droplets and some particles to adhere to the baffle and flow down into a collection hopper, thus removing particulate matter from the waste gas. The pre-treated waste gas enters from the bottom of the absorption tower and flows upward through the packing layer. Simultaneously, a circulating pump delivers the absorbent liquid from the bottom of the absorption tower to an atomizing nozzle, which evenly sprays the absorbent liquid onto the packing layer. Acid mist in the waste gas is absorbed by the absorbent liquid, thus removing the acid mist. When the waste gas passes through a demister, droplets in the waste gas collide with and are adsorbed onto the wire mesh, reducing the moisture content of the waste gas. After demister treatment, the waste gas enters the adsorption box, where harmful gases and fine particulate matter are adsorbed by activated carbon particles, further purifying the waste gas and improving its treatment efficiency. Attached Figure Description
[0011] Figure 1 This is a schematic diagram of the main structure of this utility model; Figure 2 This is a bottom view of the structure of this utility model; Figure 3 This is a partial cross-sectional structural diagram of the present invention; Figure 4 This is a schematic diagram of the internal structure of the filter box in this utility model.
[0012] In the picture: 1. Pretreatment unit; 2. Gas collection hood; 3. Acid mist absorption unit; 4. Demisting unit; 5. Activated carbon adsorption unit; 6. Exhaust fan; 7. Exhaust pipe; 11. Filter box; 12. Filter plate; 13. Baffle; 14. Sludge collection hopper; 15. Sludge discharge pipe; 16. Sludge discharge valve; 17. Limiting groove; 18. Box cover; 31. Absorption tower; 32. Packing layer; 33. Support plate; 34. Circulating pump; 35. Spray pipe; 36. Atomizing nozzle; 37. Liquid filling pipe; 38. Liquid filling valve; 39. Liquid drain pipe; 310. Liquid drain valve; 41. Demister cartridge; 42. Cartridge cover; 43. Wire mesh layer; 44. Drain pipe; 45. Sealing cap; 51. Adsorption box; 52. Cover plate. Detailed Implementation
[0013] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings. Examples of the embodiments are shown in the drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this application, and should not be construed as limiting this application. 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.
[0014] In the description of this application, it should be noted that, unless otherwise expressly specified and limited, the terms "installation," "connection," "linking," and "equipment" should be interpreted broadly. For example, they can refer to fixed connections, detachable connections, or integral connections; they can refer to mechanical connections or electrical connections; they can refer to direct connections or indirect connections through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.
[0015] Please see Figure 1-4 This utility model provides a technical solution: a stainless steel plate pickling waste gas treatment device, including a gas collection hood 2, a pretreatment mechanism 1, an acid mist absorption mechanism 3, a demisting mechanism 4, an activated carbon adsorption mechanism 5 and an exhaust fan 6 connected in sequence. The pretreatment unit 1 includes a filter box 11. The left side wall of the filter box 11 is connected to the upper surface of the gas collection hood 2 via a pipe. A filter plate 12 is provided on the left side of the inner side wall of the filter box 11, and a baffle 13 is fixedly connected to the right side of the inner side wall of the filter box 11. The baffle 13 is inclined. A sludge collection hopper 14 is connected to the right side of the lower surface of the filter box 11. A box cover 18 is provided on the top of the filter box 11. The gas collection hood 2 is installed above the stainless steel pickling tank so that the gas collection hood 2 can cover the area where the pickling tank generates waste gas. The gas collection hood 2 can be fixed with screws or welded with brackets, depending on the environment of the pickling tank. The box cover 18 is detachably fixed to the top of the filter box 11 by a latch. The acid mist absorption mechanism 3 includes an absorption tower 31. The middle of the left side wall of the absorption tower 31 is connected to the right side wall of the filter box 11 through a pipe. A packing layer 32 is provided on the upper part of the inner side wall of the absorption tower 31. A support plate 33 is fixedly connected to the top of the right side wall of the absorption tower 31. A circulation pump 34 is installed on the upper surface of the support plate 33. One end of the liquid inlet of the circulation pump 34 is connected to the bottom of the right side wall of the absorption tower 31 through a pipe. One end of the liquid outlet of the circulation pump 34 is connected to a spray pipe 35 through a pipe. The left end of the spray pipe 35 extends into the interior of the absorption tower 31 and is connected to multiple atomizing nozzles 36. The demisting mechanism 4 includes a demisting cylinder 41. The bottom of the left side wall of the demisting cylinder 41 is connected to the top of the absorption tower 31 through a pipe. A wire mesh layer 43 is fixedly connected inside the demisting cylinder 41. The wire mesh layer 43 is composed of multiple layers of metal wire mesh. A cylinder cover 42 is provided on the top of the demisting cylinder 41. The cylinder cover 42 is detachably fixed to the top of the demisting cylinder 41 by a latch. The activated carbon adsorption mechanism 5 includes an adsorption box 51. The left side wall of the adsorption box 51 is connected to the upper part of the right side wall of the demister 41 through a pipe. The adsorption box 51 is filled with activated carbon particles. The top of the adsorption box 51 is provided with a cover plate 52. The right side wall of the adsorption box 51 is connected to the air inlet of the exhaust fan 6 through a pipe. The air outlet of the exhaust fan 6 is connected to an exhaust pipe 7. The cover plate 52 is detachably fixed to the top of the adsorption box 51 by a latch. The pipes used to connect the various mechanisms are all made of corrosion-resistant materials, such as polyvinyl chloride or fiberglass, to prevent acidic substances in the exhaust gas from corroding the pipes.
[0016] Under the above configuration, the exhaust fan 6 provides suction power to collect the exhaust gas generated around the stainless steel pickling tank through the gas collection hood 2 and transport it to the filter box 11. After entering the filter box 11, the exhaust gas first passes through the filter plate 12, where larger dust and impurities are filtered out. Then, the exhaust gas impacts the baffle 13, where droplets and some particles adhere to the baffle 13 and flow down into the sludge collection hopper 14, thus achieving particulate matter removal from the exhaust gas. The pretreated exhaust gas enters from the bottom of the absorption tower 31 and flows upward through the packing layer 32. At the same time, the circulating pump 34 transports the absorbent liquid at the bottom of the absorption tower 31 to the atomizing nozzle 36, which sprays the absorbent liquid evenly. The solution is sprayed onto the packing layer 32, where the waste gas and absorbent come into full contact and undergo a neutralization reaction. The acid mist in the waste gas is absorbed by the absorbent, thus removing the acid mist. After the acid mist absorption treatment, the waste gas still contains a certain amount of droplets. When the waste gas passes through the demister 41, the droplets collide with the wire mesh layer 43 and are adsorbed onto the wire mesh. Under the action of gravity, the droplets converge into larger droplets and flow down, thus removing the droplets from the waste gas and reducing the moisture content in the waste gas. After the demister treatment, the waste gas enters the adsorption box 51, where harmful gases and fine particulate matter are adsorbed by activated carbon particles, further purifying the waste gas and improving the treatment effect.
[0017] In this embodiment, specifically: the bottom of the sludge collection hopper 14 is connected to a drain pipe 15, and a drain valve 16 is installed on the outer wall of the drain pipe 15; opening the drain pipe 15 can discharge the impurities collected in the sludge collection hopper 14.
[0018] In this embodiment, specifically: two limiting grooves 17 are symmetrically opened on the left side of the inner sidewall of the filter box 11, and the filter plate 12 is inserted into the inner sidewall of the limiting groove 17; used to limit the filter plate 12.
[0019] In this embodiment, specifically: a liquid addition pipe 37 is connected to the middle of the front surface of the absorption tower 31, and a liquid addition valve 38 is installed on the outer wall of the liquid addition pipe 37; the absorption liquid can be added to the absorption tower 31 by means of the liquid addition pipe 37. The absorption liquid is generally an alkaline solution such as sodium hydroxide solution or lime milk to neutralize the acidic substances in the waste gas.
[0020] In this embodiment, specifically: the bottom of the front surface of the absorption tower 31 is connected to a drain pipe 39, and a drain valve 310 is installed on the outer wall of the drain pipe 39; opening the drain valve 310 can drain the absorption liquid.
[0021] In this embodiment, specifically: a drain pipe 44 is connected to the lower surface of the demister 41, and a sealing cap 45 is threaded to the bottom of the outer side wall of the drain pipe 44; the water accumulated in the demister 41 is discharged after the sealing cap 45 is unscrewed.
[0022] The working principle of this utility model is as follows: The exhaust fan 6 provides suction force, which collects the waste gas generated around the stainless steel pickling tank through the gas collection hood 2 and transports it to the filter box 11. After entering the filter box 11, the waste gas first passes through the filter plate 12, where larger dust and impurities are filtered out. Then, the waste gas impacts the baffle 13, and droplets and some particles adhere to the baffle 13 and flow down along the baffle 13 into the sludge collection hopper 14, thus achieving particulate matter removal from the waste gas. The pretreated waste gas enters from the bottom of the absorption tower 31 and flows upward through the packing layer 32. At the same time, the circulating pump 34 transports the absorbent liquid at the bottom of the absorption tower 31 to the atomizing nozzle 36, which atomizes the absorbent liquid evenly. The solution is evenly sprayed onto the packing layer 32. The waste gas and the absorbent come into full contact in the packing layer 32, and a neutralization reaction occurs. The acid mist in the waste gas is absorbed by the absorbent, thereby removing the acid mist. After the acid mist absorption treatment, the waste gas still contains a certain amount of droplets. When the waste gas passes through the demister 41, the droplets collide with the wire mesh layer 43 and are adsorbed on the wire mesh. Under the action of gravity, the droplets converge into larger droplets and flow down, thereby removing the droplets in the waste gas and reducing the moisture content in the waste gas. After the demister treatment, the waste gas enters the adsorption box 51, where harmful gases and fine particulate matter in the waste gas are adsorbed by activated carbon particles, thereby further purifying the waste gas and improving the treatment effect.
[0023] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.
Claims
1. A stainless steel plate pickling waste gas treatment device, characterized in that: It includes a gas collection hood (2), a pretreatment mechanism (1), an acid mist absorption mechanism (3), a demisting mechanism (4), an activated carbon adsorption mechanism (5), and an exhaust fan (6) connected in sequence. The pretreatment mechanism (1) includes a filter box (11). The left side wall of the filter box (11) is connected to the upper surface of the gas collection hood (2) through a pipe. A filter plate (12) is provided on the left side of the inner side wall of the filter box (11). A baffle (13) is fixedly connected to the right side of the inner side wall of the filter box (11). The baffle (13) is inclined. A sludge collection hopper (14) is connected to the right side of the lower surface of the filter box (11). A box cover (18) is provided on the top of the filter box (11). The acid mist absorption mechanism (3) includes an absorption tower (31). The middle of the left side wall of the absorption tower (31) is connected to the right side wall of the filter box (11) through a pipe. The upper part of the inner side wall of the absorption tower (31) is provided with a packing layer (32). A support plate (33) is fixedly connected to the top of the right side wall of the absorption tower (31). A circulation pump (34) is installed on the upper surface of the support plate (33). One end of the liquid inlet of the circulation pump (34) is connected to the bottom of the right side wall of the absorption tower (31) through a pipe. One end of the liquid outlet of the circulation pump (34) is connected to a spray pipe (35) through a pipe. The left end of the spray pipe (35) extends into the interior of the absorption tower (31) and is connected to multiple atomizing nozzles (36). The demisting mechanism (4) includes a demisting cylinder (41). The bottom of the left side wall of the demisting cylinder (41) is connected to the top of the absorption tower (31) through a pipe. A wire mesh layer (43) is fixedly connected inside the demisting cylinder (41). The wire mesh layer (43) is composed of multiple layers of metal wire mesh. The top of the demisting cylinder (41) is provided with a cylinder cover (42). The activated carbon adsorption mechanism (5) includes an adsorption box (51). The left side wall of the adsorption box (51) is connected to the upper part of the right side wall of the demister (41) through a pipe. The adsorption box (51) is filled with activated carbon particles. The top of the adsorption box (51) is provided with a cover plate (52). The right side wall of the adsorption box (51) is connected to the air inlet of the exhaust fan (6) through a pipe. The air outlet of the exhaust fan (6) is connected to an exhaust pipe (7).
2. The stainless steel plate pickling waste gas treatment device according to claim 1, characterized in that: The bottom of the sludge collection hopper (14) is connected to a drain pipe (15), and a drain valve (16) is installed on the outer wall of the drain pipe (15).
3. The stainless steel plate pickling waste gas treatment device according to claim 2, characterized in that: The filter box (11) has two symmetrically arranged limiting grooves (17) on the left side of its inner sidewall, and the filter plate (12) is inserted into the inner sidewall of the limiting groove (17).
4. The stainless steel plate pickling waste gas treatment device according to claim 3, characterized in that: The absorption tower (31) has a liquid filling pipe (37) connected to the middle of its front surface, and a liquid filling valve (38) is installed on the outer wall of the liquid filling pipe (37).
5. The stainless steel plate pickling waste gas treatment device according to claim 4, characterized in that: The bottom of the front surface of the absorption tower (31) is connected to a drain pipe (39), and a drain valve (310) is installed on the outer wall of the drain pipe (39).
6. The stainless steel plate pickling waste gas treatment device according to claim 5, characterized in that: The lower surface of the demister (41) is connected to a drain pipe (44), and a sealing cap (45) is threaded to the bottom of the outer side wall of the drain pipe (44).