Sludge pyrohydrolysis waste gas deodorization device

Abstract

The utility model discloses a sludge pyrohydrolysis waste gas deodorization device which comprises a main body unit, a sludge pyrohydrolysis waste gas deodorization device and a sludge pyrohydrolysis waste gas deodorization device, the main body unit comprises a reaction box, a gas inlet cylinder is fixedly arranged on one side of the reaction box, a connecting pipeline is fixedly arranged on the other side of the reaction box, and a separation box is fixedly arranged at one end of the connecting pipeline; the working unit comprises a reaction assembly arranged in the reaction box, a neutralization assembly arranged in the reaction box, a membrane separator fixedly arranged in the separation box and an output pipeline fixedly arranged on one side of the separation box. The iron oxide absorbent can effectively adsorb hydrogen sulfide molecules on the surface of the iron oxide absorbent, so that hydrogen sulfide in waste gas is removed, the iron oxide absorbent can be recycled in a regeneration mode, after regeneration treatment, the adsorption performance of the absorbent can be recovered again, the service life is prolonged, and the operation cost is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of waste gas deodorization, in particular to a waste gas deodorization device through thermal hydrolysis of sludge. Background Art

[0002] Sludge thermal hydrolysis refers to the process of treating sludge under high temperature and high pressure hydrothermal conditions to decompose organic matter into gas, liquid and solid products through chemical reactions. However, sludge thermal hydrolysis will release a large amount of harmful waste gas during the reaction process. Random discharge can easily affect the quality of the air and cause harm to the human body and the environment. Therefore, in the process of sludge thermal hydrolysis, effective waste gas treatment measures must be taken to reduce the content of harmful substances in the waste gas and protect the environment and human health. At present, there are many kinds of sludge treatment and disposal processes and equipment. Among them, the thermal hydrolysis process uses high-temperature steam to directly hydrolyze the sludge, and the odorous substances produced will be much greater than other processes.

[0003] The existing patent application number is: 202122482741.6, and the patent name is "A utility model patent for deodorizing waste gas from sludge thermal hydrolysis". The scheme discloses: "It includes a heat exchanger, an alkaline washing spray device, an oxidation spray device, a photodesorption reactor, a fan and an exhaust pipe connected in sequence through pipelines, and the heat exchanger is provided with an exhaust gas inlet, and the exhaust pipe is provided with an exhaust gas outlet". The device uses a combination of multiple structures for deodorization. Although it can ensure that the odor concentration meets the emission standards, the methane and other gases contained in the exhaust gas are not fully utilized, resulting in a waste of resources, so it needs to be improved. 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 problems existing in the existing sludge thermal hydrolysis waste gas deodorization device mentioned above, the present utility model is proposed.

[0006] Therefore, the utility model aims to provide a sludge thermal hydrolysis waste gas deodorization device, which is to solve the problem that "gases such as methane contained in the waste gas are not fully utilized, resulting in waste of resources".

[0007] In order to solve the above technical problems, the utility model provides the following technical solutions: a sludge thermal hydrolysis waste gas deodorization device, comprising:

[0008] The main unit comprises a reaction box, an air inlet cylinder is fixedly arranged on one side of the reaction box, a connecting pipe is fixedly arranged on the other side of the reaction box, and a separation box is fixedly arranged on one end of the connecting pipe;

[0009] The working unit comprises a reaction component arranged in a reaction box, a neutralization component arranged in the reaction box, a membrane separator fixedly arranged in a separation box, and an output pipeline fixedly arranged at one side of the separation box.

[0010] As a preferred solution of the sludge thermal hydrolysis waste gas deodorization device described in the utility model, the reaction component includes a reaction plate inserted on the reaction box and a microbial degradation box inserted on the reaction box, a card block is fixedly provided on the reaction plate, and a slide groove is opened on the reaction box, and the slide groove is used in conjunction with the card block.

[0011] As a preferred solution of the sludge thermal hydrolysis waste gas deodorization device described in the utility model, the neutralization component includes an alkali solution sprayer fixedly arranged in the reaction box, a gas analyzer symmetrically arranged on the inner side of the reaction box, a discharge pipe is fixedly arranged on the reaction box, a drainage trough is arranged in the reaction box, and the drainage trough is used in conjunction with the discharge pipe.

[0012] As a preferred solution of the sludge thermal hydrolysis waste gas deodorization device described in the utility model, wherein: the reaction box is provided with a locking unit, and the locking unit includes a fixed block fixedly arranged on one side of the reaction box, a rectangular groove is opened in the fixed block, a rectangular block is slidably arranged in the rectangular groove, a threaded rod is rotatably arranged on the fixed block, a handle is fixedly arranged at one end of the threaded rod, and fixing grooves are opened at one end of the reaction plate and the microbial degradation box, and the rectangular block and the inner wall of the fixing groove are tightly fitted.

[0013] As a preferred solution of the sludge thermal hydrolysis waste gas deodorization device described in the utility model, an air inlet is opened on one side of the separation box, the connecting pipe and the air inlet are fixedly connected, and an outlet is opened on the other side of the separation box.

[0014] As a preferred solution of the sludge thermal hydrolysis waste gas deodorization device described in the utility model, wherein: an iron oxide absorbent is arranged in the reaction plate, and ammonia oxidizing bacteria are arranged in the microbial degradation box.

[0015] Beneficial effects of the utility model:

[0016] 1. When the exhaust gas passes through the reaction plate, the iron oxide absorbent has a high adsorption capacity for hydrogen sulfide and can effectively adsorb hydrogen sulfide molecules on its surface, thereby removing hydrogen sulfide from the exhaust gas. The iron oxide absorbent can be recycled by regeneration. After regeneration, the adsorbent can restore its adsorption performance, extend its service life, and reduce operating costs.

[0017] 2. A membrane separator is provided, in which a polyamide membrane is installed. After passing through the alkali solution sprayer, the acid gas contained in the waste gas is greatly reduced, and the remaining waste gas is mostly methane and carbon dioxide. The polyamide membrane has excellent selectivity and high permeability, which makes it easy to separate methane and carbon dioxide, so as to treat them separately and effectively recycle resources.

[0018] 3. A fixing block is provided on one side of the reaction box. By turning the handle, the rectangular block in the fixing block fits tightly with the fixing grooves on the reaction plate and the microbial degradation box, thereby fixing the reaction plate and the microbial degradation box, making the device more convenient during disassembly and installation, and reducing a certain amount of time cost. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] 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:

[0020] Figure 1 This is a schematic diagram of the overall structure of a sludge thermal hydrolysis waste gas deodorization device proposed by the utility model;

[0021] Figure 2 It is a schematic diagram of the cross-sectional structure of the reaction box;

[0022] Figure 3 Schematic diagram of the internal structure of the separation box;

[0023] Figure 4 It is a schematic diagram of the cross-sectional structure of the fixed block;

[0024] Figure 5 Schematic diagram of the cross-sectional structure of the reaction plate;

[0025] Figure 6 It is a schematic diagram of the structure of the alkali solution sprayer;

[0026] In the figure: 100, main unit; 101, reaction box; 102, air inlet cylinder; 103, connecting pipe; 104, separation box; 200, working unit; 201, reaction component; 201a, reaction plate; 201b, microbial degradation box; 201c, clamping block; 202, neutralization component; 202a, alkali solution sprayer; 202b, gas analyzer; 203, discharge pipe; 204, membrane separator; 205, output pipe; 206, output port; 207, air inlet; 300, locking unit; 301, fixing block; 302, rectangular block; 303, threaded rod; 304, handle. DETAILED DESCRIPTION

[0027] 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.

[0028] 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.

[0029] 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.

[0030] Secondly, the present invention is described in detail with reference to the schematic diagram. When describing the embodiments of the present invention, 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.

[0031] Reference Figure 1-4 The utility model provides a sludge thermal hydrolysis waste gas deodorization device, comprising: a main unit 100, including a reaction box 101, an air inlet cylinder 102 is fixedly arranged on one side of the reaction box 101, a connecting pipe 103 is fixedly arranged on the other side of the reaction box 101, and a separation box 104 is fixedly arranged on one end of the connecting pipe 103; a working unit 200, including a reaction component 201 arranged in the reaction box 101, a neutralization component 202 arranged in the reaction box 101, a membrane separator 204 fixedly arranged in the separation box 104, an output pipe 205 fixedly arranged on one side of the separation box 104, an air inlet 207 is opened on one side of the separation box 104, the connecting pipe 103 and the air inlet 207 are fixedly connected, and an output port 206 is opened on the other side of the separation box 104. Through the combination of multiple waste gas deodorization processes, the waste gas concentration is controlled within the national standard limit, the treatment efficiency is increased, and the device is more stable.

[0032] The reaction assembly 201 includes a reaction plate 201a inserted on the reaction box 101, a microbial degradation box 201b inserted on the reaction box 101, a block 201c is fixedly provided on the reaction plate 201a, a chute is provided on the reaction box 101, and the chute is used in conjunction with the block 201c. The neutralization assembly 202 includes an alkali solution sprayer 202a fixedly provided in the reaction box 101, a gas analyzer 202b symmetrically provided on the inner side of the reaction box 101, a discharge pipe 203 is fixedly provided on the reaction box 101, a drainage groove is provided in the reaction box 101, and the drainage groove is used in conjunction with the discharge pipe 203. The reaction box 101 is provided with a stop unit 300, and the stop unit 300 includes a fixed block fixedly provided on one side of the reaction box 101. 301, a rectangular groove is provided in the fixed block 301, a rectangular block 302 is slidably provided in the rectangular groove, a threaded rod 303 is rotatably provided on the fixed block 301, a handle 304 is fixedly provided at one end of the threaded rod 303, a fixed groove is provided at one end of the reaction plate 201a and the microbial degradation box 201b, the rectangular block 302 and the inner wall of the fixed groove fit tightly, an iron oxide absorbent is provided in the reaction plate 201a, and ammonia oxidizing bacteria is provided in the microbial degradation box 201b, hydrogen sulfide and ammonia in the exhaust gas are reacted by the iron oxide absorbent and the ammonia oxidizing bacteria, and the iron oxide absorbent can be recycled by regeneration, and after regeneration, the adsorbent can restore its adsorption performance, thereby extending the service life and reducing the operating cost.

[0033] During use, the exhaust gas enters the reaction box 101 through the air inlet cylinder 102, and then passes through the reaction plate 201a. An iron oxide absorbent is arranged in the reaction plate 201. When hydrogen sulfide in the exhaust gas passes through, corresponding harmless substances will be produced. The specific reaction is as follows: 3H2S+Fe2O3→FeS2+3H2O+2FeS; then, when the ammonia in the exhaust gas passes through the microbial degradation box 201b, ammonia oxidizing bacteria will carry out biodegradation to achieve deodorization, and the remaining exhaust gas passes through the gas analyzer 202b. If the acidity exceeds the standard, the alkali solution sprayer 202a is turned on, and the alkali solution is used to remove most of the water-soluble substances and acidic substances. After the alkali solution spraying, carbon dioxide, methane and other gases will remain in the exhaust gas. A polyamide membrane is installed in the membrane separator 204. When the mixed gas passes through the polyamide membrane, methane and other gases (such as carbon dioxide, nitrogen, etc.) will be separated according to their permeability differences. Since methane molecules have higher permeability than other gas molecules, after membrane separation, methane will more easily pass through the polyamide membrane and be separated, while other gases will be relatively retained on the other side of the membrane. During the membrane separation process, the gas flow passing through the polyamide membrane is collected, which will contain a higher concentration of methane, thereby achieving methane extraction and separation. Through a variety of combinations, waste gas deodorization and resource recovery are achieved, enhancing the processing efficiency of the device.

[0034] 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 sludge thermal hydrolysis waste gas deodorization device, characterized in that: include: The main unit (100) comprises a reaction box (101), an air inlet cylinder (102) is fixedly provided on one side of the reaction box (101), a connecting pipe (103) is fixedly provided on the other side of the reaction box (101), and a separation box (104) is fixedly provided on one end of the connecting pipe (103); The working unit (200) comprises a reaction component (201) arranged in a reaction box (101), a neutralization component (202) arranged in the reaction box (101), a membrane separator (204) fixedly arranged in a separation box (104), and an output pipe (205) fixedly arranged on one side of the separation box (104).

2. A sludge thermal hydrolysis waste gas deodorization device according to claim 1, characterized in that: The reaction assembly (201) comprises a reaction plate (201a) inserted on a reaction box (101) and a microbial degradation box (201b) inserted on the reaction box (101); a clamping block (201c) is fixedly provided on the reaction plate (201a); a slide groove is provided on the reaction box (101); the slide groove and the clamping block (201c) are used in combination.

3. A sludge thermal hydrolysis waste gas deodorization device according to claim 2, characterized in that: The neutralization component (202) comprises an alkali solution sprayer (202a) fixedly arranged in a reaction box (101), and a gas analyzer (202b) symmetrically arranged inside the reaction box (101); a discharge pipe (203) is fixedly arranged on the reaction box (101); a drainage groove is arranged in the reaction box (101), and the drainage groove is used in conjunction with the discharge pipe (203).

4. A sludge thermal hydrolysis waste gas deodorization device according to claim 3, characterized in that: The reaction box (101) is provided with a locking unit (300), and the locking unit (300) comprises a fixing block (301) fixedly arranged on one side of the reaction box (101), a rectangular groove is provided in the fixing block (301), a rectangular block (302) is slidably provided in the rectangular groove, a threaded rod (303) is rotatably provided on the fixing block (301), a handle (304) is fixedly provided at one end of the threaded rod (303), a fixing groove is provided at one end of the reaction plate (201a) and the microbial degradation box (201b), and the rectangular block (302) is tightly fitted with the inner wall of the fixing groove.

5. The sludge thermal hydrolysis waste gas deodorization device according to claim 1, characterized in that: An air inlet (207) is provided on one side of the separation box (104), the connecting pipe (103) and the air inlet (207) are fixedly connected, and an outlet (206) is provided on the other side of the separation box (104).

6. A sludge thermal hydrolysis waste gas deodorization device according to claim 2, characterized in that: An iron oxide absorbent is provided in the reaction plate (201a), and ammonia oxidizing bacteria are provided in the microbial degradation box (201b).

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