Ammonia-containing tail gas purification device for sodium carbonate production

Abstract

The utility model relates to the technical field of soda ash production, in particular to an ammonia-containing tail gas purification device for soda ash production, which comprises a support component and a purification component, the support component comprises a box body and a liquid storage tank arranged in the box body, and the purification component comprises an air pump and a filter. The first-stage filtering device composed of the air pump and the filter is additionally arranged and used for conducting preliminary filtering on ammonia-containing gas, the liquid storage tank storing reaction liquid is additionally arranged and used for forming the second-stage filtering device, ammonia contained in the gas can be better absorbed, and during ventilation, under the limiting effect of the one-way valve, the gas is not prone to falling off under the limiting effect of the one-way valve; the sleeve is driven to extend out along the end of the gas inlet pipe so as to be conveniently butted with liquid in the liquid storage tank, the end of the sleeve extends into reaction liquid so as to be conveniently mixed with ammonia-containing gas to react with the reaction liquid, and a shell provided with an activated carbon filter element is additionally arranged at the tail part of the liquid storage tank so as to form a third-stage filtering device which is used for further absorbing ammonia-containing tail gas.

Description

Technical Field

[0001] The utility model relates to the technical field of soda ash production, in particular to a device for purifying ammonia-containing tail gas used in soda ash production. Background Art

[0002] Soda ash is commonly known as soda, soda ash, soda ash, disodium carbonate, soda ash, usually white powder, a strong electrolyte, easily soluble in water and glycerin, slightly soluble in anhydrous ethanol, and insoluble in propanol. It has the general properties of salt and is an inorganic salt. It absorbs moisture and clumps in humid air, and part of it turns into sodium bicarbonate. Sodium carbonate can be made by the combined alkali method, the ammonia-soda method, the Leblanc method, etc. It can also be processed and refined by natural alkali. It is mainly used in the production of flat glass, glass products and ceramic glazes, daily washing, acid neutralization and food processing. In terms of the environment, sodium carbonate is generally regarded as a relatively harmless substance to the ecosystem.

[0003] Various ammonia-containing exhaust gases are produced during the production of soda ash, such as carbonization exhaust gas, filtered exhaust gas and dry ammonium exhaust gas. Ammonia is a colorless alkaline gas with irritating properties. In the current actual soda ash production process, on-site ammonia is easily dissipated into the air around the production site, with a strong odor and a relatively poor working environment, which affects the health of production workers and the environmental quality. Utility Model Content

[0004] The purpose of this section is to summarize some aspects of the embodiments of the utility model and briefly introduce some preferred embodiments. Some simplifications or omissions may be made in this section and the specification abstract and utility model name of this application to avoid blurring the purpose of this section, specification abstract and utility model name, and such simplifications or omissions cannot be used to limit the scope of the utility model.

[0005] In view of the problem that various ammonia-containing tail gases are generated in the soda ash production process and affect the health of production workers and environmental quality in the prior art, the utility model is proposed.

[0006] Therefore, the purpose of the utility model is to provide a device for purifying ammonia-containing tail gas in the production of soda ash.

[0007] A device for purifying ammonia-containing tail gas used in soda ash production, comprising a support assembly and a purification assembly, wherein the support assembly comprises a box body and a liquid storage tank installed inside the box body, the box body is connected with a bracket by bolts, and the side wall of the liquid storage tank is connected to the bracket by bolts;

[0008] The purification component includes an air pump and a filter. The filter is connected to the inner wall of the box body by bolts, the air pump is connected to one side of the bracket by bolts, and the air inlet of the air pump is connected to the air outlet of the filter by a flange.

[0009] As a preferred solution of the utility model for the purification device of ammonia-containing tail gas in soda ash production, wherein: the side wall of the liquid storage tank is threadedly connected with an air inlet pipe, and the end of the air inlet pipe is connected to the air outlet of the air pump through a pipeline.

[0010] As a preferred solution of the utility model for the ammonia-containing tail gas purification device for soda ash production, wherein: the inner end of the air inlet pipe is sleeved with a sleeve, and the lower end of the sleeve extends below the liquid level inside the liquid storage tank.

[0011] As a preferred solution of the utility model for the ammonia-containing tail gas purification device for soda ash production, a one-way valve is embedded in the middle position inside the sleeve, and the ventilation direction of the one-way valve is the same as the exhaust direction of the air pump.

[0012] As a preferred solution of the utility model for the ammonia-containing tail gas purification device for soda ash production, wherein: a tension spring is clamped on the side wall of the one-way valve, and the other end of the tension spring is connected to the end of the intake pipe by a bolt.

[0013] As a preferred solution of the utility model for the purification device of ammonia-containing tail gas in soda ash production, the filter is sealed with a cover plate in the middle, filter cotton is bonded to the inner side of the cover plate, and the side wall of the filter cotton is sealed and fitted with the inner wall of the filter.

[0014] As a preferred solution of the utility model for the purification device of ammonia-containing tail gas in soda ash production, wherein: the gas outlet on the side wall of the liquid storage tank is connected to a shell through a pipeline, and an activated carbon filter element is packaged inside the shell.

[0015] Beneficial effects of the ammonia-containing tail gas purification device used in soda ash production:

[0016] The present application uses a box body to install components such as a liquid storage tank, and cooperates with a bracket to maintain the stability of the position of the liquid storage tank and the purification component, so as to stably purify the ammonia-containing tail gas in the soda ash production process. The interior of the liquid storage tank is used to store the reaction liquid, and the ammonia-containing gas is passed into the liquid storage tank for reaction, and the ammonia component is collected through the reaction, thereby reducing the waste of ammonia.

[0017] The present application adds a first-stage filtering device composed of an air pump and a filter, which is used for preliminary filtering of ammonia-containing gas, adsorbing and filtering large particle impurities contained in the gas, reducing the influence of impurities on subsequent reactions, and maintaining the stability of subsequent reactions. A liquid storage tank storing reaction liquid is added in the middle of the bracket to form a second-stage filtering device, so that the ammonia contained in the gas can be better absorbed. A sleeve connected by a tension spring is installed at the end of the air inlet pipe on the side wall of the liquid storage tank. During ventilation, the gas drives the sleeve to extend along the end of the air inlet pipe under the limiting action of the one-way valve, which is convenient for docking with the liquid inside the liquid storage tank, and the end of the sleeve is extended into the reaction liquid, which is convenient for the ammonia-containing gas to mix and react with the reaction liquid. When the gas source is disconnected, the sleeve can be pulled out of the reaction liquid with the cooperation of the tension spring, and the one-way valve can prevent the reaction liquid from flowing back from the sleeve, ensuring the safety of the reaction and preventing the loss of the reaction liquid. A shell with an activated carbon filter element is added to the tail of the liquid storage tank to form a third-stage filtering device, which is used to further absorb the ammonia-containing tail gas and can also dry the gas for subsequent treatment. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the technical solutions of the embodiments of the present utility model, the following briefly introduces the drawings required for the description of the embodiments. Obviously, the drawings described below are only some embodiments of the present utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative labor. Among them:

[0019] Figure 1 It is a schematic diagram of the overall structure of the utility model.

[0020] Figure 2 It is a front structural schematic diagram of the utility model.

[0021] Figure 3 This is a schematic diagram of the cross-sectional structure of the utility model at point A-A.

[0022] Figure 4 It is a schematic diagram of the top structure of the utility model.

[0023] Figure 5 It is a schematic diagram of the cross-sectional structure of the utility model at B-B.

[0024] Legend: 100, support assembly; 101, housing; 102, liquid storage tank; 103, bracket; 200, purification assembly; 201, air pump; 202, filter; 203, air inlet pipe; 204, sleeve; 205, one-way valve; 206, tension spring; 207, filter cotton; 208, housing; 209, activated carbon filter element; 210, cover plate. DETAILED DESCRIPTION

[0025] In order to make the above-mentioned purposes, features and advantages of the present invention more obvious and easy to understand, the specific implementation methods of the present invention are described in detail below in conjunction with the accompanying drawings.

[0026] In the following description, many specific details are set forth to facilitate a full understanding of the present invention, but the present invention may also be implemented in other ways different from those described herein, and those skilled in the art may make similar generalizations without violating the connotation of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed below.

[0027] Secondly, the term "one embodiment" or "embodiment" as used herein refers to a specific feature, structure or characteristic that may be included in at least one implementation of the present invention. The term "in one embodiment" that appears in different places in this specification does not necessarily refer to the same embodiment, nor does it refer to a separate or selective embodiment that is mutually exclusive with other embodiments.

[0028] Secondly, the present invention is described in detail with reference to the schematic diagram. When describing the embodiments in detail, for the sake of convenience, the cross-sectional diagrams showing the device structure will not be partially enlarged according to the general scale, and the schematic diagrams are only examples, which should not limit the scope of protection of the present invention. In addition, in actual production, the three-dimensional dimensions of length, width and depth should be included.

[0029] Example 1

[0030] Reference Figure 1 -5 is the first embodiment of the utility model, which provides a support assembly 100 and a purification assembly 200 for a purification device for ammonia-containing tail gas in soda ash production. The support assembly 100 includes a box body 101 and a liquid storage tank 102 installed inside the box body 101. The box body 101 is connected to a bracket 103 by bolts, and the side wall of the liquid storage tank 102 is connected to the bracket 103 by bolts.

[0031] When in use, the box body 101 is used to install components such as the liquid storage tank 102, and cooperates with the bracket 103 to maintain the stability of the position of the liquid storage tank 102 and the purification component 200, so as to stably purify the ammonia-containing tail gas in the soda ash production process. The interior of the liquid storage tank 102 is used to store the reaction liquid, and the ammonia-containing gas is introduced into the liquid storage tank 102 for reaction, and the ammonia component is collected through the reaction to reduce ammonia waste.

[0032] Example 2

[0033] Reference Figure 1-5 is the second embodiment of the utility model. Different from the previous embodiment, this embodiment provides a purification component 200 for ammonia-containing tail gas purification device for soda ash production. The purification component 200 includes an air pump 201 and a filter 202. The filter 202 is connected to the inner wall of the box body 101 by bolts, and the air pump 201 is connected to one side of the bracket 103 by bolts. The air inlet of the air pump 201 is connected to the air outlet of the filter 202 by a flange.

[0034] Specifically, the side wall of the liquid storage tank 102 is threadedly connected with an air inlet pipe 203, and the end of the air inlet pipe 203 is connected to the air outlet of the air pump 201 through a pipeline.

[0035] Furthermore, a sleeve 204 is sleeved on the inner end of the air inlet pipe 203 , and the lower end of the sleeve 204 extends below the liquid level inside the liquid storage tank 102 .

[0036] Furthermore, a one-way valve 205 is embedded in the middle of the sleeve 204 , and the ventilation direction of the one-way valve 205 is the same as the exhaust direction of the air pump 201 .

[0037] Furthermore, a tension spring 206 is clamped on the side wall of the one-way valve 205 , and the other end of the tension spring 206 is connected to the end of the intake pipe 203 by means of bolts.

[0038] Furthermore, a cover plate 210 is sealed and inserted in the middle of the filter 202 , a filter cotton 207 is bonded to the inner side of the cover plate 210 , and a side wall of the filter cotton 207 is sealed and fitted to an inner side wall of the filter 202 .

[0039] Furthermore, the air outlet on the side wall of the liquid storage tank 102 is connected to a shell 208 through a pipeline, and an activated carbon filter element 209 is packaged inside the shell 208.

[0040] When in use, the power supply of the air pump 201 is turned on, and the air pump 201 extracts ammonia-containing tail gas through the filter 202. When the gas enters the filter 202, it will be filtered by the filter cotton 207 installed on the inner side of the cover plate 210, and the impurities in the ammonia-containing tail gas will be intercepted and filtered, so as to maintain the pure gas to enter the intake pipe 203. Since the one-way valve 205 is installed at the end of the intake pipe 203, the gas will first rise to a certain pressure inside the intake pipe 203, and then the one-way valve 205 will cooperate to push the sleeve 204 to move along the end of the intake pipe 203, so that the sleeve 204 extends into the liquid stored in the inner side of the liquid storage tank 102. At this time, the sleeve 20 The side wall will pull the tension spring 206 through the one-way valve 205 to deform, so that the tension spring 206 stores a certain amount of elastic potential energy. After the filtration is completed, when the gas source is disconnected, the tension spring 206 will release the elastic potential energy stored before, and the sleeve 204 will return to the original position of the end of the inlet pipe 203, so that the sleeve 204 rises and breaks away from the contact with the liquid surface inside the liquid storage tank 102 until the next ventilation and filtration operation. The filtered gas will float from the inside of the liquid storage tank 102, enter the shell 208 through the gas outlet pipe of the liquid storage tank 102, and further filter and absorb the ammonia-containing gas through the activated carbon filter element 209 inside the shell 208.

[0041] In summary, a first-stage filtering device consisting of an air pump 201 and a filter 202 is added to perform preliminary filtering on the ammonia-containing gas, absorb and filter the large particle impurities contained in the gas, reduce the influence of impurities on the subsequent reaction, and maintain the subsequent reaction to proceed stably. A liquid storage tank 102 storing a reaction liquid is added in the middle of the bracket 103 to form a second-stage filtering device, so that the ammonia contained in the gas can be better absorbed. A sleeve 204 connected by a tension spring 206 is installed at the end of the air inlet pipe 203 on the side wall of the liquid storage tank 102. When ventilating, the gas drives the sleeve 204 along the air inlet pipe 203 under the limiting action of the one-way valve 205. The end is extended to facilitate docking with the liquid inside the liquid storage tank 102, and the end of the sleeve 204 is extended into the reaction liquid to facilitate the mixing and reaction of the ammonia-containing gas and the reaction liquid. When the gas source is disconnected, with the cooperation of the tension spring 206, the sleeve 204 can be pulled out of the reaction liquid, and the one-way valve 205 can prevent the reaction liquid from flowing back from the sleeve 204, thereby ensuring the safety of the reaction and preventing the loss of the reaction liquid. A shell 208 with an activated carbon filter element 209 is added to the rear end of the liquid storage tank 102 to form a third-level filtering device, which is used to further absorb the ammonia-containing tail gas and can also dry the gas for subsequent processing.

[0042] Importantly, it should be noted that the construction and arrangement of the present application shown in a plurality of different exemplary embodiments are only exemplary. Although only a few embodiments are described in detail in this disclosure, it should be readily understood by those who refer to this disclosure that many modifications are possible (e.g., the size, scale, structure, shape and ratio of various elements, and parameter values ​​(e.g., temperature, pressure, etc.), installation arrangements, use of materials, color, directional changes, etc.) without substantially departing from the novel teachings and advantages of the subject matter described in the application. For example, the element shown as integrally formed can be composed of multiple parts or elements, the position of the element can be inverted or otherwise changed, and the nature or number or position of the discrete element can be changed or changed. Therefore, all such modifications are intended to be included in the scope of the present utility model. The order or sequence of any process or method steps can be changed or reordered according to alternative embodiments. In the claims, any "device plus function" clause is intended to cover the structure of performing the function described herein, and is not only structurally equivalent but also equivalent structure. Without departing from the scope of the present invention, other substitutions, modifications, changes and omissions may be made in the design, operating conditions and arrangement of the exemplary embodiments. Therefore, the present invention is not limited to a specific embodiment, but extends to various modifications that still fall within the scope of the appended claims.

[0043] Additionally, in order to provide a concise description of example embodiments, all features of an actual embodiment (ie, those features that are not relevant to the best mode presently contemplated for carrying out the invention or those that are not relevant to implementing the invention) may not be described.

[0044] It will be appreciated that in the development of any actual implementation, as in any engineering or design project, numerous implementation-specific decisions may be made. Such a development effort may be complex and time-consuming, but will be a routine task of design, fabrication, and production for those of ordinary skill having the benefit of this disclosure without undue experimentation.

[0045] It should be noted that the above embodiments are only used to illustrate the technical solution of the utility model rather than to limit it. Although the utility model has been described in detail with reference to the preferred embodiments, ordinary technicians in the field should understand that the technical solution of the utility model can be modified or replaced by equivalents without departing from the spirit and scope of the technical solution of the utility model, which should be included in the scope of the claims of the utility model.

Claims

1. A device for purifying ammonia-containing tail gas in the production of soda ash, characterized in that: The invention comprises a support assembly (100) and a purification assembly (200), wherein the support assembly (100) comprises a box body (101) and a liquid storage tank (102) installed inside the box body (101), a bracket (103) is connected inside the box body (101) by bolts, and a side wall of the liquid storage tank (102) is connected to the bracket (103) by bolts; The purification component (200) comprises an air pump (201) and a filter (202); the filter (202) is connected to the inner wall of the box body (101) by bolts; the air pump (201) is connected to one side of the bracket (103) by bolts; and the air inlet of the air pump (201) is connected to the air outlet of the filter (202) by a flange.

2. The ammonia-containing tail gas purification device for soda ash production according to claim 1, characterized in that: An air inlet pipe (203) is threadedly connected to the side wall of the liquid storage tank (102), and an end of the air inlet pipe (203) is connected to an air outlet of the air pump (201) through a pipeline.

3. The ammonia-containing tail gas purification device for soda ash production as claimed in claim 2, characterized in that: The inner end of the air inlet pipe (203) is sleeved with a sleeve (204), and the lower end of the sleeve (204) extends below the liquid level inside the liquid storage tank (102).

4. The ammonia-containing tail gas purification device for soda ash production as claimed in claim 3, characterized in that: A one-way valve (205) is embedded in the middle of the sleeve (204), and the ventilation direction of the one-way valve (205) is the same as the air outlet direction of the air pump (201).

5. The ammonia-containing tail gas purification device for soda ash production as claimed in claim 4, characterized in that: A tension spring (206) is clamped on the side wall of the one-way valve (205), and the other end of the tension spring (206) is connected to the end of the intake pipe (203) by means of bolts.

6. The ammonia-containing tail gas purification device for soda ash production according to claim 1, characterized in that: A cover plate (210) is sealed and inserted in the middle of the filter (202), filter cotton (207) is bonded to the inner side of the cover plate (210), and the side wall of the filter cotton (207) is sealed and fitted to the inner side wall of the filter (202).

7. The ammonia-containing tail gas purification device for soda ash production according to claim 1, characterized in that: The gas outlet on the side wall of the liquid storage tank (102) is connected to a shell (208) via a pipeline, and an activated carbon filter element (209) is encapsulated inside the shell (208).

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