Deacidification and denitration device for low-temperature high-concentration acidic waste gas

Abstract

The invention relates to the technical field of deacidification equipment, and provides a deacidification and denitration device for low-temperature high-concentration acidic waste gas, which comprises an equipment main body, a water inlet pipe above the equipment main body and an exhaust pipe on the left side of the equipment main body, the deacidification unit is located in the upper end area of the equipment body, a conical frame is arranged below the deacidification unit and used for gathering waste gas to the outer side area, the outer side area of the deacidification unit comprises a liquid accumulation cavity, a concentric-square-shaped cavity and a gas outlet cavity, and an opening in the inner side of the concentric-square-shaped cavity is used for discharging the gathered waste gas to the deep position of the liquid accumulation cavity; finally, the purified gas rises through the hollow-square-shaped cavity and is separated from the liquid accumulation cavity. The problem that water mist coverage is insufficient can be avoided, waste gas is subjected to a sufficient neutralization reaction, salt solid particles generated by the waste gas are collected in real time, the tedious steps such as follow-up precipitation are omitted, finally, the waste gas is covered in a liquid accumulation mode, the utilization rate of reaction liquid can be maximized, loss is reduced, and the use performance of equipment is improved.

Description

Technical Field

[0001] The present invention relates to the technical field of deacidification equipment, and more specifically, to a deacidification and denitration device for low-temperature and high-concentration acidic waste gas. Background Art

[0002] Low-temperature, high-concentration acidic waste gas refers to waste gas emissions with low temperature and high acid content, mainly from industrial production processes, such as chemical production, electronics industry, metal processing and pharmaceutical industry. In order to make its emissions meet the predetermined standards and avoid polluting the environment, it is often necessary to perform deacidification and denitrification treatment to ensure safe discharge.

[0003] At present, in the waste gas deacidification and denitrification treatment operation, it is found that the treatment equipment often uses water spraying to purify the rising waste gas. However, during this period, the water mist spraying of the spray water cannot ensure that all the air flow channels of the equipment are covered, which leads to the inability to effectively purify some gases, thereby reducing the purification quality of the equipment. In addition, the water spraying will also cause a large amount of water resources to be wasted, and the water utilization rate is not high and it is impossible to fully perform the purification operation;

[0004] In order to solve the above problems, the present application proposes a deacidification and denitrification device for low-temperature and high-concentration acidic waste gas. Summary of the invention

[0005] The object of the present invention is to provide a deacidification and denitration device for low-temperature and high-concentration acidic waste gas to solve the problems raised in the above-mentioned background technology.

[0006] The purpose of the present invention can be achieved through the following technical solutions:

[0007] A deacidification and denitration device for low-temperature and high-concentration acidic waste gas, comprising: an equipment body and a water inlet pipe above it and an exhaust pipe on the left side; a deacidification unit, located in the upper end area of ​​the equipment body, a conical frame is provided below the deacidification unit to gather the waste gas to the outer area, the outer area of ​​the deacidification unit includes a liquid accumulation chamber, a round-shaped chamber and an air outlet chamber, the inner opening of the round-shaped chamber is used to discharge the gathered waste gas to the depth of the liquid accumulation chamber, so that it can fully react with the reaction liquid, and finally the purified gas rises from the liquid accumulation chamber through the round-shaped chamber; a conical frame is provided above There is an inner cone frame, the outer conical slope of which is located at the bottom of the liquid accumulation chamber, which is used to gather the solid particles produced by the neutralization reaction to the lowest area of ​​the liquid accumulation chamber. A rotating ring frame is also provided above the cone frame, which is located below the inner cone frame. The outer rotating ring and scraper on the outer side drive the circumferentially dispersed solid particles to gather in one place, which is convenient for centralized collection and subsequent treatment; an inner ring frame and a second upper ring frame above the deacidification unit are provided above the inner ring frame, and an overflow groove is formed between the inner ring frame and the second upper ring frame, which is used to locate the liquid level to determine whether the residual amount needs to be added with reaction liquid.

[0008] As a further optimization of the present invention, an outer ring frame is provided in the outermost area of ​​the deacidification unit, which is connected to a hook-shaped ring frame on the outside of the conical frame through a support rod mechanism, and a first upper ring frame is provided in the adjacent inner area of ​​the deacidification unit, and the upper end of the hook-shaped ring frame is located between the first upper ring frame and the outer ring frame.

[0009] As a further optimization of the present invention, the zigzag cavity is connected by an adapter plate above the hook-shaped ring frame to the inner wall of the outer ring frame and the outer wall of the first upper ring frame, so as to cover the upper end of the hook-shaped ring frame to form a zigzag cavity with inner and outer channels. The outer opening of the zigzag cavity is connected to the guide area of ​​the conical frame, and the inner opening is located at the vertical center position of the hook-shaped ring frame.

[0010] As a further optimization of the present invention, the air outlet cavity is formed between the outer wall of the second upper ring frame and the inner wall of the first upper ring frame, and is used for the circulation of purified gas.

[0011] As a further optimization of the present invention, an annular channel is formed between the tops of the first upper ring frame and the second upper ring frame, which is connected to the exhaust pipe on the left side of the first upper ring frame, and the exhaust pipe is connected to the exhaust pipe.

[0012] As a further optimization of the present invention, the upper end of the outer rotating ring is rotatably mounted inside the hook-shaped ring frame, and a paddle is provided at the inner end of the scraper.

[0013] As a further optimization of the present invention, a slag discharge portion is provided in the outer area of ​​the inner cone frame and is connected to the bottom area of ​​the liquid accumulation chamber.

[0014] As a further optimization of the present invention, an arc frame is provided at the bottom of the conical slope to connect with the slag discharge part, the arc frame has a hollow structure inside, and the slag discharge part has a one-way valve structure inside.

[0015] As a further optimization of the present invention, a positioning hole is opened on the outer side of the arc frame, and when the paddle pushes the solid particles into the arc frame, the increase of the solid particles causes water to be squeezed outward through the positioning hole.

[0016] As a further optimization of the present invention, a connecting rod is provided inside the overflow trough for connecting the inner ring frame and the second upper ring frame.

[0017] Beneficial effects of the present invention:

[0018] After the conical frame gathers the exhaust gas to the outer area, the present invention utilizes the staggered serpentine cavity and the liquid accumulation cavity to allow the exhaust gas to directly penetrate into the bottom area of ​​the liquid accumulation cavity to undergo a neutralization reaction in the reaction liquid, thereby achieving a sufficient reaction to ensure the purification quality. Subsequently, the purified gas flows into the exhaust pipe through the gas outlet cavity and is discharged outward. Compared with the existing equipment, the problem of insufficient water mist coverage can be effectively avoided, and the purification performance of the equipment can be effectively improved.

[0019] When the neutralization reaction produces solid substances such as salts, the rotating operation of the rotating ring frame combined with the tilting mechanism of the conical slope can drive the solid particles to gather in the lower area of ​​the liquid accumulation chamber in real time, and at the same time drive the solid particles into the arc frame through the paddle. With the continuous entry of solid particles, the reaction liquid will be automatically squeezed out from the positioning hole, and then the deepest solid particles will be discharged into the inner cone frame for collection. Compared with the existing equipment, it avoids cumbersome processes such as precipitation, and prevents the solid particles from being scattered everywhere, which is convenient for subsequent treatment.

[0020] When the neutralization reaction consumes the reaction liquid and the liquid level is lower than the overflow tank, the water inlet pipe automatically pours the reaction liquid into the liquid accumulation chamber, and raises the liquid level to the same height as the adapter plate. This forms a circulation to ensure that there is sufficient reaction liquid in the liquid accumulation chamber, while maximizing the utilization rate of the reaction liquid to reduce losses, which is suitable for purification operations under different exhaust gas flow conditions. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, for ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0022] Figure 1 It is a schematic diagram of the internal structure of the device body of the present invention;

[0023] Figure 2 It is a schematic diagram of the overall appearance structure of the present invention;

[0024] Figure 3 It is a schematic diagram of the structure of the upper cross-section of the device body of the present invention;

[0025] Figure 4 It is a schematic diagram of the three-dimensional structure of the upper end of the device body of the present invention;

[0026] Figure 5 It is a partial enlarged structural schematic diagram of part A of the present invention;

[0027] In the accompanying drawings, the components represented by the reference numerals are listed as follows:

[0028] In the figure: 100, equipment body; 200, deacidification unit;

[0029] 101. water inlet pipe; 102. air extraction pipe;

[0030] 201, cone frame; 202, inner cone frame; 203, inner ring frame; 204, first upper ring frame; 205, rotating ring frame; 206, slag discharge part;

[0031] 2011, outer ring frame; 2012, adapter plate; 2013, hook ring frame;

[0032] 2021, tapered slope;

[0033] 2031, second upper ring frame; 2032, connecting rod;

[0034] 2041, exhaust pipe;

[0035] 2051, outer rotating ring; 2052, scraper; 2053, paddle;

[0036] 2061, arc frame; 2062, positioning hole;

[0037] 301, liquid accumulation chamber; 302, circular chamber; 303, air outlet chamber; 304, overflow trough. DETAILED DESCRIPTION

[0038] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0039] See also Figure 1-5 The present invention provides an embodiment of a deacidification and denitration device for low-temperature and high-concentration acidic waste gas:

[0040] Specifically, a deacidification and denitration device for low-temperature and high-concentration acidic waste gas includes: an equipment body 100 and a water inlet pipe 101 above it and an air extraction pipe 102 on the left side;

[0041] The deacidification unit 200 is located in the upper end area of ​​the equipment body 100. A conical frame 201 is provided below the deacidification unit 200 to gather the waste gas to the outer area. The outer area of ​​the deacidification unit 200 includes a liquid accumulation chamber 301, a roundabout chamber 302 and a gas outlet chamber 303. The inner opening of the roundabout chamber 302 is used to discharge the gathered waste gas to the depth of the liquid accumulation chamber 301 so that it can fully neutralize with the reaction liquid. Finally, the purified gas rises through the roundabout chamber 302 and leaves the liquid accumulation chamber 301.

[0042] An inner cone frame 202 is provided above the cone frame 201, and a cone slope 2021 on the outer side thereof is located at the bottom of the liquid accumulation chamber 301, and is used to gather the solid particles generated by the neutralization reaction to the lowest area of ​​the liquid accumulation chamber 301. A rotating ring frame 205 is also provided above the cone frame 201, and is located below the inner cone frame 202. The upper side of the rotating ring frame 205 is connected to a rotating motor below the deacidification unit 200, and the outer rotating ring 2051 and the scraper 2052 on the outer side of the rotating ring frame 205 drive the solid particles dispersed in the circumferential direction to gather in one place, so as to facilitate centralized collection for subsequent treatment.

[0043] An inner ring frame 203 and a second upper ring frame 2031 above the deacidification unit 200 are provided above the inner ring frame 203 and an overflow groove 304 is formed between the inner ring frame 203 and the second upper ring frame 2031 for locating the liquid level to determine whether the residual amount needs to be added with reaction liquid.

[0044] In this embodiment, a deacidification device is provided that can fully utilize the reaction liquid to fully neutralize the reaction waste gas. The reaction liquid is stored in the liquid accumulation chamber 301, and the waste gas is sent into the reaction liquid through the circular chamber 302 for full purification. This can avoid the problem of omissions caused by insufficient water mist coverage and ensure that the waste gas is fully purified. In addition, the scraper 2052 can gather the solid salt particles generated during purification in real time, which is convenient for subsequent collection and processing. Finally, through the chamber purification method, the utilization rate of the reaction liquid can be maximized, reducing losses while improving the performance of the equipment.

[0045] Furthermore, an outer ring frame 2011 is provided in the outermost area of ​​the deacidification unit 200, and a hook-shaped ring frame 2013 is connected to the outer side of the conical frame 201 through a support rod mechanism. A first upper ring frame 204 is provided in the adjacent inner area of ​​the deacidification unit 200. The upper end of the hook-shaped ring frame 2013 is located between the first upper ring frame 204 and the outer ring frame 2011. A downward-opening annular groove is provided inside the upper end of the hook-shaped ring frame 2013, and the inner side of the groove is tightly fitted to the inner wall of the outer rotating ring 2051 to form a seal.

[0046] Furthermore, the circular cavity 302 is connected by the adapter plate 2012 above the hook-shaped ring frame 2013 to the inner wall of the outer ring frame 2011 and the outer wall of the first upper ring frame 204, so as to cover the upper end of the hook-shaped ring frame 2013 to form a circular cavity 302 with inner and outer double channels. The outer opening of the circular cavity 302 is connected to the guide area of ​​the conical frame 201, and the inner opening is located at the vertical center position of the hook-shaped ring frame 2013, so that the exhaust gas can be neutralized with the reaction liquid as soon as it enters.

[0047] Furthermore, the gas outlet cavity 303 is formed between the outer wall of the second upper ring frame 2031 and the inner wall of the first upper ring frame 204, and is used to discharge the purified gas upward. It is also used to store the reaction liquid to prevent the reaction liquid from overflowing and leaking upward when a large amount of exhaust gas flows into the liquid accumulation cavity 301.

[0048] Furthermore, an annular channel is formed between the top of the first upper ring frame 204 and the second upper ring frame 2031 , which is connected to the exhaust pipe 2041 on the left side of the first upper ring frame 204 , and the exhaust pipe 2041 is connected to the exhaust pipe 102 .

[0049] Furthermore, the upper end of the outer rotating ring 2051 is rotatably mounted inside the hook-shaped ring frame 2013, and a shift plate 2053 is provided at the inner end of the scraper 2052, which is folded to one side for storage when blocked by external force, and automatically unfolded outward for restoration when the external force disappears.

[0050] Furthermore, a slag discharge portion 206 is provided in the outer area of ​​the inner cone frame 202 and is connected to the bottom area of ​​the liquid accumulation chamber 301; an arc frame 2061 is provided at the bottom of the conical slope 2021 and is connected to the slag discharge portion 206, the arc frame 2061 has a hollow structure inside, and the slag discharge portion 206 has a one-way valve structure inside.

[0051] Furthermore, a positioning hole 2062 is opened on the outer side of the arc frame 2061. When the paddle 2053 pushes the solid particles into the arc frame 2061, as the solid particles continue to increase, the solid particles inside the arc frame 2061 squeeze each other, so that the water containing the water is squeezed outward through the positioning hole 2062 to prevent the reaction liquid from being collected together with the solid particles.

[0052] Furthermore, a connecting rod 2032 is provided inside the overflow trough 304 for connecting the inner ring frame 203 and the second upper ring frame 2031 .

[0053] It can be understood that the present invention can avoid the problem of insufficient water mist coverage, so that the exhaust gas can undergo a sufficient neutralization reaction and collect the salt solid particles produced in real time, eliminating the tedious steps such as subsequent precipitation. Finally, covering the exhaust gas by accumulating liquid can maximize the utilization rate of the reaction liquid, reduce losses and improve the performance of the equipment.

[0054] In the description of the present invention, unless otherwise specified, "plurality" means two or more than two; it should be understood that the terms "opening", "upper", "lower", "thickness", "top", "middle", "length", "inside", "around" and the like indicate orientation or positional relationship, which is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the components or elements referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention.

[0055] Finally, it should be noted that the above is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, it is still possible for those skilled in the art to modify the technical solutions described in the aforementioned embodiments or to make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A deacidification and denitration device for low-temperature and high-concentration acidic waste gas, characterized in that: include: The equipment body (100) and the water inlet pipe (101) above it and the air extraction pipe (102) on the left side; A deacidification unit (200) is located in the upper end area of ​​the equipment body (100). A conical frame (201) is provided below the deacidification unit (200) to gather the waste gas to the outer area. The outer area of ​​the deacidification unit (200) includes a liquid accumulation chamber (301), a roundabout chamber (302) and a gas outlet chamber (303). The inner opening of the roundabout chamber (302) is used to discharge the gathered waste gas to the depth of the liquid accumulation chamber (301) so that the waste gas can fully react with the reaction liquid. Finally, the purified gas rises through the roundabout chamber (302) and leaves the liquid accumulation chamber (301). An inner cone frame (202) is provided above the cone frame (201), and an outer cone slope (2021) thereof is located at the bottom of the liquid accumulation chamber (301) and is used to gather solid particles generated by the neutralization reaction to the lowest area of ​​the liquid accumulation chamber (301). A rotating ring frame (205) is also provided above the cone frame (201), which is located below the inner cone frame (202), and the upper part of the rotating ring frame (205) is connected to a rotating motor below the deacidification unit (200). The outer rotating ring (2051) and the scraper (2052) outside the rotating ring frame (205) drive the solid particles dispersed in the circumferential direction to gather in one place, so as to facilitate centralized collection for subsequent treatment; An inner ring frame (203) and a second upper ring frame (2031) above the deacidification unit (200) are provided above the inner ring frame (203), and an overflow groove (304) is formed between the inner ring frame (203) and the second upper ring frame (2031) for locating the liquid level to determine whether the residual amount needs to be added with reaction liquid.

2. The deacidification and denitration device for low-temperature and high-concentration acidic waste gas according to claim 1, characterized in that: The outermost region of the deacidification unit (200) is provided with an outer ring frame (2011), which is connected to a hook-shaped ring frame (2013) on the outer side of the conical frame (201) through a support rod mechanism; the adjacent inner region of the deacidification unit (200) is provided with a first upper ring frame (204), and the upper end of the hook-shaped ring frame (2013) is located between the first upper ring frame (204) and the outer ring frame (2011).

3. According to the deacidification and denitrification device for low-temperature and high-concentration acidic waste gas as described in claim 1, the cycloidal cavity (302) is connected by a transfer plate (2012) above the hook-shaped ring frame (2013) to the inner wall of the outer ring frame (2011) and the outer wall of the first upper ring frame (204), so as to cover the upper end of the hook-shaped ring frame (2013) to form a cycloidal cavity (302) with inner and outer double channels, the outer opening of the cycloidal cavity (302) is connected to the guide area of ​​the conical frame (201), and the inner opening is located at the vertical center position of the hook-shaped ring frame (2013).

4. The deacidification and denitration device for low-temperature and high-concentration acidic waste gas according to claim 1, characterized in that: The gas outlet cavity (303) is formed between the outer wall of the second upper ring frame (2031) and the inner wall of the first upper ring frame (204), and is used for the circulation of purified gas.

5. The deacidification and denitration device for low-temperature and high-concentration acidic waste gas according to claim 2, characterized in that: An annular channel is formed between the tops of the first upper ring frame (204) and the second upper ring frame (2031), which is connected to an exhaust pipe (2041) on the left side of the first upper ring frame (204), and the exhaust pipe (2041) is connected to the exhaust pipe (102).

6. The deacidification and denitration device for low-temperature and high-concentration acidic waste gas according to claim 1, characterized in that: The upper end of the outer rotating ring (2051) is rotatably mounted inside the hook-shaped ring frame (2013), and a paddle (2053) is provided at the inner end of the scraper (2052).

7. The deacidification and denitration device for low-temperature and high-concentration acidic waste gas according to claim 1, characterized in that: The outer area of ​​the inner cone frame (202) is provided with a slag discharge portion (206) which is connected to the bottom area of ​​the liquid accumulation chamber (301).

8. The deacidification and denitration device for low-temperature and high-concentration acidic waste gas according to claim 1, characterized in that: The bottom of the conical slope (2021) is provided with an arc frame (2061) connected to the slag discharge part (206); the interior of the arc frame (2061) is a hollow structure, and the interior of the slag discharge part (206) is a one-way valve structure.

9. The deacidification and denitration device for low-temperature and high-concentration acidic waste gas according to claim 8, characterized in that: A positioning hole (2062) is provided on the outer side of the arc-shaped frame (2061). When the paddle (2053) pushes solid particles into the arc-shaped frame (2061), the increase of solid particles causes water to be squeezed outward through the positioning hole (2062).

10. The deacidification and denitration device for low-temperature and high-concentration acidic waste gas according to claim 1, characterized in that: A connecting rod (2032) is provided inside the overflow trough (304) for connecting the inner ring frame (203) and the second upper ring frame (2031).

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