Efficient gas absorption tower

Abstract

The utility model relates to an efficient gas absorption tower which comprises a horizontal tower kettle, the upper side of the horizontal tower kettle is connected with a first vertical tower body and a second vertical tower body, the first vertical tower body and the second vertical tower body are sequentially provided with a tail gas outlet, a liquid inlet pipe, a spray head, an upper hand hole and a lower hand hole from top to bottom, and the liquid inlet pipe is connected with the spray head; a first-stage tail gas inlet and a second-stage tail gas inlet are formed in the upper side of the horizontal tower kettle; and the tail gas outlet of the first vertical tower body is connected with the second-stage tail gas inlet through a pipeline. The efficient gas absorption tower disclosed by the utility model is novel in structural form, compact in structure and good in cooling and absorption effects, a primary circulating pump can be reduced, the occupied area is greatly reduced, the pipeline configuration is simplified, and the equipment is particularly suitable for technical transformation of old factories.

Description

Technical Field

[0001] The utility model relates to the technical field of tail gas treatment, in particular to an efficient gas absorption tower. Background Art

[0002] During the rectification process of electronic special gases, a large amount of raw gas is contained in the waste gas at the top of the light component removal tower. Direct emission will affect air quality and be harmful to human health, so harmless treatment is required. Usually, an absorption tower is used for treatment.

[0003] Currently, in the tail gas absorption process flow, several absorption towers are configured according to the number of absorption stages. The pipeline configuration for the layout of multiple absorption towers is also relatively complex. At the same time, the layout of multiple absorption tower equipment occupies a large area. For some old factories that need to technically transform and increase the absorption stage, they often cannot meet the requirements of land use conditions, which brings limitations to the transformation of old factories. Content of the Utility Model

[0004] In view of this, the purpose of the utility model is to provide an efficient gas absorption tower, which has a compact structure, reduces the floor area, and simplifies the pipeline configuration.

[0005] The utility model is realized by the following scheme: An efficient gas absorption tower includes a horizontal tower kettle. A first vertical tower body and a second vertical tower body are connected to the upper side of the horizontal tower kettle. The first vertical tower body and the second vertical tower body are successively provided with a tail gas outlet, a liquid inlet pipe, a spray head, an upper manhole and a lower manhole from top to bottom. The liquid inlet pipe is connected to the spray head. The upper side of the horizontal tower kettle is provided with a primary tail gas inlet and a secondary tail gas inlet. The tail gas outlet of the first vertical tower body is connected to the secondary tail gas inlet through a pipeline.

[0006] Further, the horizontal tower kettle is inclined. A baffle is arranged in the middle of the inner cavity of the horizontal tower kettle. The first vertical tower body and the primary tail gas inlet are located on the uphill side of the baffle, and the second vertical tower body and the secondary tail gas inlet are located on the downhill side of the baffle. An inlet for water is arranged at the upper part of the higher end of the horizontal tower kettle.

[0007] Further, a pressure measuring port and a caustic soda feeding port are arranged at the upper part of the lower end of the horizontal tower kettle. A temperature measuring port and two liquid level gauge ports with one high and one low positions are arranged on the side of the horizontal tower kettle. A liquid outlet and a drain port are arranged at the bottom of the horizontal tower kettle. The liquid outlet is connected to the liquid inlet pipes of the vertical tower bodies respectively through a circulation pipe. A circulation pump is arranged on the circulation pipe.

[0008] Further, a condenser is arranged inside the horizontal tower kettle.

[0009] Further, stainless steel mesh plates are arranged at the lower ends of the first vertical tower body and the second vertical tower body, and fillers are filled above the stainless steel mesh plates.

[0010] Compared with the prior art, the utility model has the following beneficial effects: The novel structure of the high-efficiency gas absorption tower of the utility model is novel, the structure is compact, the cooling and absorption effects are good, the number of primary circulation pumps can be reduced, the floor area can be greatly reduced, the pipeline configuration can be simplified, and the equipment is especially suitable for the technical transformation of old factories.

[0011] In order to make the purpose, technical solution and advantages of the utility model clearer, the following will further elaborate on the utility model through specific embodiments and related drawings. Description of the Drawings

[0012] Figure 1 is the front view of the structural schematic diagram of the embodiment of the utility model;

[0013] Figure 2 is the right view of the structural schematic diagram of the embodiment of the utility model;

[0014] Explanation of the reference numerals in the figure: 1. First vertical tower body, 1-1. Primary tail gas outlet, 1-2. First liquid inlet pipe, 1-3. First spray head, 1-4. First upper manhole, 1-5. First lower manhole, 1-6. First stainless steel mesh plate, 2. Second tower body, 2-1. Secondary tail gas outlet, 2-2. Second liquid inlet pipe, 2-3. Second spray head, 2-4. Second upper manhole, 2-5. Second lower manhole, 2-6. Second stainless steel mesh plate, 3. Horizontal tower kettle, 3-1. Primary tail gas inlet, 3-2. Secondary tail gas inlet, 3-3. Pressure measuring port, 3-4. Caustic soda feeding port, 3-5. Water inlet, 3-6. Liquid outlet, 3-7. Drain port, 3-8. Temperature measuring port, 3-9. Liquid level gauge port, 3-10. Baffle, 4. Condenser, 4-1. Cooling water inlet, 4-2. Cooling water outlet, 4-3. Coiled pipe, 5. Leg. Detailed Embodiments

[0015] It should be noted that the following detailed descriptions are all exemplary and are intended to provide further explanations for the present application. Unless otherwise specified, all technical and scientific terms used herein have the same meaning as commonly understood by those of ordinary skill in the technical field to which the present application belongs.

[0016] It should be noted that the terms used herein are only for describing specific embodiments and are not intended to limit the exemplary embodiments according to the present application. As used herein, unless the context clearly indicates otherwise, the singular form is also intended to include the plural form. In addition, it should be understood that when the terms "comprising" and / or "including" are used in this specification, they indicate the presence of features, steps, operations, devices, components, and / or combinations thereof.

[0017] As Figures 1-2As shown in the figure, an efficient gas absorption tower includes a horizontal tower kettle 3. The upper side of the horizontal tower kettle 3 is connected with a first vertical tower body 1 and a second vertical tower body 2. The first vertical tower body 1 and the second vertical tower body 2 are successively provided with a tail gas outlet, a liquid inlet pipe, a spray head, an upper handhole and a lower handhole from top to bottom. The liquid inlet pipe is connected with the spray head. Among them, the first vertical tower body 1 corresponds to a first tail gas outlet 1-1, a first liquid inlet pipe 1-2, a first spray head 1-3, a first upper handhole 1-4 and a first lower handhole 1-5. The second vertical tower body 2 corresponds to a second tail gas outlet 2-1, a second liquid inlet pipe 2-2, a second spray head 2-3, a second upper handhole 2-4 and a second lower handhole 2-5. The upper side of the horizontal tower kettle 3 is provided with a primary tail gas inlet 3-1 and a secondary tail gas inlet 3-2. The tail gas outlet of the first vertical tower body (i.e., the first tail gas outlet 1-1) is connected with the secondary tail gas inlet 3-2 through a pipeline.

[0018] The process of two-stage absorption using two tower bodies is completed in one absorption tower, obtaining good cooling and absorption effects, and can reduce the primary circulation pump, greatly reduce the floor area, simplify the pipeline configuration. The structure form of the equipment is novel, the structure is compact, and the cooling and absorption effects are good, especially suitable for the technical transformation of old factories.

[0019] In this embodiment, the horizontal tower kettle 3 is inclined. A baffle 3-10 is arranged in the middle of the inner cavity of the horizontal tower kettle 3. The first vertical tower body and the primary tail gas inlet are located on the uphill side of the baffle, and the second vertical tower body and the secondary tail gas inlet are located on the downhill side of the baffle. The upper part of the higher end of the horizontal tower kettle is provided with a water inlet 3-5.

[0020] In this embodiment, a pressure measuring port 3-3 and a caustic soda feeding port 3-4 are arranged on the upper part of the lower end of the horizontal tower kettle 3. A temperature measuring port 3-8 and two liquid level gauge ports 3-9 with one high and one low positions are arranged on the side of the horizontal tower kettle 3. A liquid outlet 3-6 and a drain port 3-7 are arranged at the bottom of the horizontal tower kettle 3. The inclined setting of the horizontal tower kettle 3 can ensure that the liquid in the tower kettle is completely discharged without residue. The liquid outlet is connected with the liquid inlet pipes of the vertical tower bodies through a circulation pipe, and a circulation pump is arranged on the circulation pipe.

[0021] In this embodiment, a condenser 4 is arranged inside the horizontal tower kettle 3. The condenser 4 includes a cooling water inlet 4-1, a cooling water outlet 4-2 and a coil pipe 4-3.

[0022] In this embodiment, stainless steel mesh plates are arranged at the lower ends of the first vertical tower body and the second vertical tower body, namely a first stainless steel mesh plate 1-6 and a second stainless steel mesh plate 2-6. Packing is filled above the stainless steel mesh plate. The position of the lower handhole is slightly higher than the height of the stainless steel mesh plate, and the position of the upper handhole is slightly higher than the top height of the packing. The packing can increase the contact between gas and liquid phases, and the packing is filled or unloaded through the upper and lower handholes. The stainless steel mesh plate is spot welded to the support blocks protruding from the inner wall of the lower end of the tower body, and the stainless steel mesh plate serves as a support for the packing and a gas distribution function.

[0023] In this embodiment, the first vertical tower body and the second vertical tower body are connected in sections by flanges.

[0024] The specific working process of the high-efficiency gas absorption tower of the present utility model is as follows: The rectification tail gas enters from the first-stage tail gas inlet 3-1 on the tower kettle 3, and first enters the first tower body 1 from bottom to top under the blocking effect of the baffle 3-10 and the distribution effect of the stainless steel perforated mesh 1-6. It fully contacts with the absorption liquid sprinkled from top to bottom by the spray head 1-3 under the action of the packing. The gas that is not absorbed after the first-stage absorption enters the second tower body 2 through the first-stage tail gas outlet 1-1 to the second-stage tail gas inlet 3-2 for second-stage absorption. The absorption process is the same as the first-stage absorption. The tail gas after the second-stage absorption is discharged or further processed through the second-stage tail gas outlet 2-1. The temperature of the absorption liquid in the tower kettle rises after absorbing the tail gas and exchanges heat with the built-in condenser 4 to reduce the temperature. The absorption liquid is transported by an external circulating pump through the liquid outlet 3-6 at the bottom of the tower kettle 3 to the liquid inlet pipes 1-2 and 2-2 of the first and second tower bodies for circulating spraying and continuous absorption. After the absorption liquid is saturated, it is discharged through the vent port 3-7. Fresh tap water is supplemented through the water inlet 3-5. If caustic soda needs to be added, it is put in through the caustic soda feeding port 3-4.

[0025] For any of the technical solutions disclosed by the present utility model above, unless otherwise stated, if it discloses a numerical range, then the disclosed numerical range is a preferred numerical range. Any person skilled in the art should understand that the preferred numerical range is only the numerical values with obvious technical effects or representativeness among many implementable numerical values. Since there are too many numerical values to list them all, the present utility model only discloses some numerical values to illustrate the technical solutions of the present utility model. Moreover, the above-listed numerical values should not constitute a limitation to the protection scope of the present invention.

[0026] If the present utility model discloses or involves components or structural parts that are fixedly connected to each other, then, unless otherwise stated, the fixed connection can be understood as: a detachable fixed connection (for example, connected by bolts or screws), or it can also be understood as: a non-detachable fixed connection (for example, riveting, welding). Of course, the mutual fixed connection can also be replaced by an integral structure (for example, manufactured by integral casting process) (except when it is obviously impossible to adopt the integral forming process).

[0027] In addition, for any of the technical solutions disclosed by the present utility model above, the terms used to represent the positional relationship or shape, unless otherwise stated, include the states or shapes that are approximate, similar, or close to it.

[0028] Any component provided by the present utility model can either be assembled from multiple separate components or be a single component manufactured by an integral forming process.

[0029] The above are only the preferred embodiments of the present utility model, and are not intended to limit the present utility model in other forms. Any person skilled in the art may use the technical content disclosed above to make changes or modifications into equivalent embodiments with equivalent changes. However, any simple modifications, equivalent changes and modifications made to the above embodiments based on the technical essence of the present utility model without departing from the technical solution content of the present utility model still fall within the protection scope of the technical solution of the present utility model.

Claims

1. A high-efficiency gas absorption tower, characterized in that: It comprises a horizontal tower kettle, wherein the upper side of the horizontal tower kettle is connected with a first vertical tower body and a second vertical tower body, the first vertical tower body and the second vertical tower body are provided with an exhaust gas outlet, a liquid inlet pipe, a spray head, an upper hand hole and a lower hand hole in sequence from top to bottom, and the liquid inlet pipe is connected with the spray head; a primary exhaust gas inlet and a secondary exhaust gas inlet are provided on the upper side of the horizontal tower kettle, and the exhaust gas outlet of the first vertical tower body is connected with the secondary exhaust gas inlet through a pipeline.

2. The high-efficiency gas absorption tower according to claim 1, characterized in that: The horizontal tower kettle is arranged at an angle, a baffle is provided in the middle of the inner cavity of the horizontal tower kettle, the first vertical tower body and the first-level exhaust gas inlet are located on the uphill side of the baffle, the second vertical tower body and the second-level exhaust gas inlet are located on the downhill side of the baffle, and a water inlet is provided on the upper part of the higher end of the horizontal tower kettle.

3. The high-efficiency gas absorption tower according to claim 1, characterized in that: A pressure measuring port and a caustic soda flake feeding port are provided at the upper part of the lower end of the horizontal tower kettle, a temperature measuring port and two liquid level gauge ports, one high and one low, are provided at the side of the horizontal tower kettle; a liquid outlet and an emptying port are provided at the bottom of the horizontal tower kettle, the liquid outlets are respectively connected to the liquid inlet pipes of the vertical tower body through circulation pipes, and a circulation pump is provided on the circulation pipe.

4. The high-efficiency gas absorption tower according to claim 1, characterized in that: A condenser is arranged inside the horizontal tower kettle.

5. The high-efficiency gas absorption tower according to claim 1, characterized in that: The lower ends of the first vertical tower body and the second vertical tower body are both provided with stainless steel mesh plates, and the top of the stainless steel mesh plates is filled with fillers.

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