Deacidification and desalination structure for air filtration of steel structure industrial factory building

Abstract

According to the acid and salt removal structure for air filtration of the steel structure industrial factory building, an air outlet of a high-pressure induced draft fan 1 is connected to an alkaline absorbent solution tank 2, and the air outlet of the high-pressure induced draft fan 1 extends into the alkaline absorbent solution tank 2; the alkaline absorbent solution tank 2 is a calcium hydroxide solution tank, and an air outlet of the alkaline absorbent solution tank 2 is connected to the fiber filter plate assembly 3; polypropylene fiber filter cotton is placed in the fiber filter plate assembly 3, and an air outlet of the fiber filter plate assembly 3 is connected to the activated carbon filter assembly 4. The device can cope with corrosion of acid, salt and other corrosive substances in the industrial environment to the steel structure, avoids structural potential safety hazards, prolongs the service life and reduces the maintenance cost.

Description

TECHNICAL FIELD

[0001] The utility model relates to steel structure industrial plant technical field especially a kind of acid and salt removal structure for steel structure industrial plant air filtration. BACKGROUND

[0002] Steel structure industrial plant core material is steel, and other auxiliary materials are installed simultaneously with design, etc.Because steel structure industrial plant, in production process, often will produce a large amount of acidic gas and salt-containing particles, these harmful substances not only can cause corrosion to the equipment in workshop, but also can affect the health of staff.

[0003] In order to effectively solve this problem, the utility model provides an acid and salt removal structure for steel structure industrial plant air filtration, which aims to effectively remove acidic gas and salt in the air through a series of filtering and processing steps to ensure the air quality in the plant. UTILITY MODEL CONTENT

[0004] In order to solve the problems existing in the prior art, the utility model provides an acid and salt removal structure for steel structure industrial plant air filtration.

[0005] The utility model solves the technical problems by adopting the following technical scheme:

[0006] An acid and salt removal structure for steel structure industrial plant air filtration includes high-pressure induced draft fan 1, alkaline absorbent solution pool 2, fiber filter plate assembly 3 and several activated carbon filter assemblies 4, wherein: the air outlet of high-pressure induced draft fan 1 is connected to alkaline absorbent solution pool 2, and the air outlet of high-pressure induced draft fan 1 extends into alkaline absorbent solution pool 2; the alkaline absorbent solution pool 2 is a calcium hydroxide solution pool, and the air outlet of alkaline absorbent solution pool 2 is connected to fiber filter plate assembly 3; polypropylene fiber filter cotton is placed in fiber filter plate assembly 3, and the air outlet of fiber filter plate assembly 3 is connected to activated carbon filter assembly 4.

[0007] The utility model also has the following additional technical features:

[0008] As a further specific optimization of the utility model technical scheme: the high-pressure induced draft fan 1 includes induced draft fan body 101, induced draft fan body 101 is provided with induced draft fan motor 102 inside, the front part of induced draft fan body 101 is provided with first air inlet 103, and filter screen 104 is arranged on first air inlet 103; the top side of induced draft fan body 101 is provided with first air outlet 108, first air outlet 108 is connected with air outlet pipe, and the air outlet pipe extends into alkaline absorbent solution pool 2.

[0009] As the further specific optimization of the technical scheme of the utility model, the alkaline absorbent solution pool 2 comprises a solution pool body 201; a wind outlet pipe connecting port 202 is arranged on the left side of the solution pool body 201, and the first air outlet 108 of the high-pressure air drafter 1 is welded and installed in the inside of the wind outlet pipe connecting port 202; a second air outlet 203 is arranged on the top right side of the solution pool body 201, and the second air outlet 203 is welded and installed with a wind pipe and the wind pipe is inserted into the fiber filter plate assembly 3.

[0010] As the further specific optimization of the technical scheme of the utility model, the fiber filter plate assembly 3 comprises a fiber filter assembly body 301, and polypropylene fiber filter cotton 302 is arranged in the inside of the fiber filter assembly body 301; the top of the polypropylene fiber filter cotton 302 is in an open shape, the bottom is in a sealed shape, and the polypropylene fiber filter cotton 302 is a folding filter core; a third air outlet 305 is welded and fixed on the right side of the fiber filter assembly body 301, and the third air outlet 305 is welded and communicated with a plurality of air outlet branches; an air inlet pipe is welded and arranged on the top of the fiber filter assembly body 301 and inserted into the fiber filter assembly body 301, and the top of the polypropylene fiber filter cotton 302 and the bottom of the air inlet pipe are connected into an integrated structure through screw threads.

[0011] As the further specific optimization of the technical scheme of the utility model, the active carbon filter assembly 4 comprises an upper shell 402, a lower shell 401 and a lock catch 403; the upper shell 402 and the lower shell 401 are detachably installed through the lock catch 403; an active carbon placing cavity 405 is arranged in the inside of the upper shell 402 and the lower shell 401, active carbon 406 is placed in the active carbon placing cavity 405, and an air inlet 404 is arranged on the bottom of the lower shell 401; the air inlet 404 is communicated with the active carbon placing cavity 405; an air outlet channel 407 is arranged on the outside of the active carbon placing cavity 405, a plurality of air outlet cavities 408 are arranged on the periphery of the lower shell 401, and the air outlet channel 407 is communicated with the air outlet cavities 408.

[0012] Compared with the prior art, the utility model has the advantages that:

[0013] The utility model can cope with the corrosion of acid, salt and other corrosive substances on the steel structure in the industrial environment, avoid structural safety hazards, prolong the service life and reduce the maintenance cost.

[0014] In addition, the utility model also considers the ease of use and maintainability of the structure. The high-pressure air drafter, the alkaline absorbent solution pool, the fiber filter plate assembly and the active carbon filter assembly are all designed to be detachable, which facilitates the daily maintenance and replacement of consumables by the staff. At the same time, the setting of the transparent observation window enables the staff to intuitively observe the use of the calcium hydroxide solution and replace it in time to ensure the treatment effect.BRIEF DESCRIPTION OF DRAWINGS BRIEF DESCRIPTION OF DRAWINGS

[0015] Figure 1 It is the whole structure schematic view of acid and salt removing structure of the utility model;

[0016] Figure 2 It is high pressure induced draft fan 1 structure schematic view of the utility model;

[0017] Figure 3 It is alkali absorbent solution pool 2 structure schematic view of the utility model;

[0018] Figure 4 It is fiber filter plate assembly 3 structure schematic view of the utility model;

[0019] Figure 5 It is activated carbon filter assembly 4 structure schematic view of the utility model;

[0020] Figure 6 It is activated carbon filter assembly 4 three-dimensional structure schematic view of the utility model.

[0021] Brief description of drawings: high pressure induced draft fan 1, alkali absorbent solution pool 2, fiber filter plate assembly 3 and activated carbon filter assembly 4. DETAILED DESCRIPTION

[0022] The exemplary embodiments disclosed by the utility model will be described in more detail below with reference to the drawings.

[0023] A steel structure industrial plant air filter acid and salt removing structure, including high pressure induced draft fan 1, alkali absorbent solution pool 2, fiber filter plate assembly 3 and several activated carbon filter assemblies 4, wherein: the air outlet of high pressure induced draft fan 1 is connected to alkali absorbent solution pool 2, and the air outlet of high pressure induced draft fan 1 is inserted into alkali absorbent solution pool 2; The air outlet of the alkali absorbent solution pool 2 is connected to the fiber filter plate assembly 3; The fiber filter plate assembly 3 is placed with polypropylene fiber filter cotton, and the air outlet of the fiber filter plate assembly 3 is connected to the activated carbon filter assembly 4; The activated carbon filter assembly 4 is placed with activated carbon.

[0024] The high pressure induced draft fan 1 comprises an induced draft fan body 101, the inside of the induced draft fan body 101 is provided with an induced draft motor 102, the front part of the induced draft fan body 101 is provided with a first air inlet 103, the first air inlet 103 is provided with a filter screen 104, the filter screen 104 is a surface anti-corrosion treated stainless steel screen or aluminum alloy screen, the filter screen 104 can be repeatedly cleaned and used, and is suitable for high humidity and high salt fog environment; the first air inlet 103 is also provided with an air inlet amount adjusting block 105, the top of the air inlet amount adjusting block 105 is hingedly installed on the top of the induced draft fan body 101, the bottom of the air inlet amount adjusting block 105 is provided with an adjusting groove 106, the adjusting groove 106 is provided with a locking bolt 107, the air inlet amount adjusting block 105 is fixed at different positions through the locking bolt 107 to adjust the air inlet amount of the high pressure induced draft fan 1; the top of one side of the induced draft fan body 101 is provided with a first air outlet 108, the first air outlet 108 is connected with an air outlet pipe, and the air outlet pipe extends into the alkaline absorbent solution pool 2.

[0025] The alkaline absorbent solution pool 2 comprises a solution pool body 201, the solution pool body 201 is made of 304 stainless steel material, and can resist medium concentration alkali solution (such as NaOH concentration ≤10%); the left side of the solution pool body 201 is provided with an air outlet pipe connecting port 202, and the first air outlet 108 of the high pressure induced draft fan 1 is welded and installed in the inside of the air outlet pipe connecting port 202; the top right side of the solution pool body 201 is provided with a second air outlet 203, the second air outlet 203 is welded and installed with an air pipe, and the air pipe extends into the fiber filter plate assembly 3; the top of the solution pool body 201 is also provided with a transparent observation window 205 and a first hinged door 204 with good sealing performance, the transparent observation window 205 is used for observing whether the calcium hydroxide solution 206 inside needs to be replaced; the first hinged door 204 is used for replacing the calcium hydroxide solution 206 inside.

[0026] The fiber filter plate assembly 3 comprises a fiber filter assembly body 301, the inside of the fiber filter assembly body 301 is provided with polypropylene fiber filter cotton 302, the top of the polypropylene fiber filter cotton 302 is open, the bottom is sealed, and the polypropylene fiber filter cotton 302 is a folded filter core; A second hinged door 303 with good sealing performance is hingedly installed on the left side of the fiber filter assembly body 301, and the second hinged door 303 is used to replace the polypropylene fiber filter cotton 302 inside; A third air outlet 305 is welded and fixed on the right side of the fiber filter assembly body 301, and the third air outlet 305 is welded and communicated with a plurality of air outlet branches; An air inlet pipe is welded and arranged on the top of the fiber filter assembly body 301, and the air inlet pipe extends into the fiber filter assembly body 301, and the top of the polypropylene fiber filter cotton 302 and the bottom of the air inlet pipe are connected in an integrated structure by screw threads. The polypropylene fiber filter cotton 302 can remove salt mist in the air, and the principle is to capture salt mist through inertial impact (particles collide with fibers due to large mass), diffusion interception (Brown motion of small particles contacts fibers) and sieve effect (pore size is smaller than particle size).

[0027] The number of the active carbon filter assembly 4 is several, and the active carbon filter assembly 4 is uniformly distributed in the steel structure industrial factory building; The active carbon filter assembly 4 comprises an upper shell 402, a lower shell 401 and a lock buckle 403; The upper shell 402 and the lower shell 401 are detachably installed through the lock buckle 403, and are used to replace the active carbon 406 inside; The inside of the upper shell 402 and the lower shell 401 is provided with an active carbon placing cavity 405, the active carbon placing cavity 405 is placed with the active carbon 406, and the bottom of the lower shell 401 is provided with an air inlet 404; The air inlet 404 is communicated with the active carbon placing cavity 405; The outside of the active carbon placing cavity 405 is provided with an air outlet channel 407, and the outer periphery of the lower shell 401 is provided with a plurality of air outlet cavities 408; The air outlet channel 407 is communicated with the air outlet cavities 408.

[0028] The porous structure of the active carbon provides a large specific surface area, and the active carbon forms rich microporous (pore size <2 nm), mesoporous (2-50 nm) and macroporous (>50 nm) structures through a high-temperature activation process (such as steam activation, chemical activation), and the specific surface area can reach 500-2000 m² / g (equivalent to the area of a football field compressed in 1 gram of active carbon). Small particles (particle size is usually 0.01-10 μm) in acid mist (such as sulfuric acid mist, hydrochloric acid mist) and salt mist (such as NaCl droplets) will be adsorbed on the pore surface due to Brown motion or inertial impact, especially particles with a pore size close to the particle size are easily trapped.

[0029] The working principle of the acid and salt removal structure for air filtration of the steel structure industrial factory building is as follows:

[0030] Firstly, the air in the plant is sucked in by the high-pressure induced draft fan, and the air is preliminarily filtered through the filter screen to remove larger particulate matters. Then, the air is introduced into the alkaline absorbent solution pool and contacts with the calcium hydroxide solution in the pool, and the alkaline components in the solution and the acidic gas in the air are neutralized to remove the acidic gas. Subsequently, the preliminarily purified air enters the fiber filter plate assembly, and the polypropylene fiber filter cotton further filters the salt mist in the air to improve the salt mist removal degree of the air. Finally, the air passes through the activated carbon filter assembly, and the activated carbon uses its strong adsorption capacity to adsorb the residual acid mist or salt mist in the air to ensure that the finally discharged air reaches the clean standard.

[0031] The above detailed description of the embodiments of the present application provided in the drawings is not intended to limit the scope of the claimed application, but only represents selected embodiments of the present application.

Claims

1. An acid and salt removal structure for air filtration in a steel structure industrial plant, characterized in that: The device includes a high-pressure blower (1), an alkaline absorbent solution tank (2), a fiber filter plate assembly (3), and several activated carbon filter assemblies (4), wherein: the outlet of the high-pressure blower (1) is connected to the alkaline absorbent solution tank (2), and the outlet of the high-pressure blower (1) extends into the alkaline absorbent solution tank (2); the alkaline absorbent solution tank (2) is a calcium hydroxide solution tank, and the outlet of the alkaline absorbent solution tank (2) is connected to the fiber filter plate assembly (3); polypropylene fiber filter cotton is placed in the fiber filter plate assembly (3), and the outlet of the fiber filter plate assembly (3) is connected to the activated carbon filter assembly (4).

2. The air filtration and desalination structure for steel structure industrial plants according to claim 1, characterized in that: The high-pressure induced draft fan (1) includes an induced draft fan body (101), an induced draft motor (102) is installed inside the induced draft fan body (101), a first air inlet (103) is provided at the front of the induced draft fan body (101), and a filter screen (104) is provided on the first air inlet (103); a first air outlet (108) is provided on one side of the top of the induced draft fan body (101), and an air outlet pipe is connected to the first air outlet (108), which extends into the alkaline absorbent solution pool (2).

3. The air filtration and desalination structure for steel structure industrial plants according to claim 1, characterized in that: The alkaline absorbent solution pool (2) includes a solution pool body (201); an air outlet connection port (202) is provided on the left side of the solution pool body (201), and the first air outlet (108) of the high-pressure blower (1) is welded and installed inside the air outlet connection port (202); a second air outlet (203) is provided on the top right side of the solution pool body (201), and an air duct is welded and installed on the second air outlet (203) and the air duct extends into the fiber filter plate assembly (3).

4. The air filtration and desalination structure for steel structure industrial plants according to claim 1, characterized in that: The fiber filter assembly (3) includes a fiber filter assembly body (301), inside which a polypropylene fiber filter cotton (302) is disposed. The top of the polypropylene fiber filter cotton (302) is open and the bottom is sealed. The polypropylene fiber filter cotton (302) is a pleated filter element. A third air outlet (305) is welded and fixed on the right side of the fiber filter assembly body (301). The third air outlet (305) is welded and connected to several air outlet branches. An air inlet pipe is welded and disposed on the top of the fiber filter assembly body (301), and the air inlet pipe extends into the fiber filter assembly body (301). The top of the polypropylene fiber filter cotton (302) and the bottom of the air inlet pipe are connected by threads to form an integral structure.

5. The air filtration and desalination structure for steel structure industrial plants according to claim 1, characterized in that: The activated carbon filter assembly (4) includes an upper shell (402), a lower shell (401), and a latch (403); the upper shell (402) and the lower shell (401) are detachably installed by the latch (403); the upper shell (402) and the lower shell (401) are provided with activated carbon placement chambers (405), activated carbon (406) is placed in the activated carbon placement chambers (405), and the bottom of the lower shell (401) is provided with an air inlet (404); An air inlet (404) is connected to the activated carbon placement cavity (405); an air outlet channel (407) is provided outside the activated carbon placement cavity (405), and a plurality of air outlet cavities (408) are provided on the outer periphery of the lower shell (401), with the air outlet channel (407) connected to the air outlet cavities (408).

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