Tail gas treatment device of high-temperature fermentation treatment equipment

Abstract

The utility model relates to a tail gas treatment device of high-temperature fermentation treatment equipment, and belongs to the field of high-temperature fermentation treatment equipment.The tail gas treatment device comprises an exhaust fan used for being communicated with a fermentation box body and a tail gas treatment box, the tail gas treatment box is communicated with an air outlet of the exhaust fan, and a filter element used for adsorbing tail gas is arranged in the tail gas treatment box; a water tank with an opening in the upper portion is arranged at the bottom of the tail gas treatment box, the tail gas treatment box is provided with a dripping and soaking assembly used for dripping and soaking alkali liquor in the water tank into the filter element, and the water tank can receive liquid at the bottom of the tail gas treatment box. The tail gas treatment device has the effects of reducing the tail gas treatment cost and reducing secondary pollution at the same time.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of high-temperature fermentation treatment equipment, in particular to a tail gas treatment device of high-temperature fermentation treatment equipment. BACKGROUND

[0002] The high-temperature fermentation treatment equipment is a device specially used for treating organic waste and converting it into useful products through high-temperature fermentation technology. The high-temperature fermentation treatment equipment is widely used in the treatment of organic solid waste, such as domestic sludge, kitchen garbage, livestock and poultry manure, etc. Its working principle is mainly to utilize the activity of microorganisms under high-temperature and aerobic conditions to decompose and convert organic waste.

[0003] The high-temperature fermentation treatment equipment usually includes a fermentation box, a heating system, a ventilation system, a control system and other key components. During the fermentation process, the equipment maintains appropriate temperature, humidity and oxygen concentration to ensure that microorganisms can efficiently perform fermentation activities.

[0004] Organic solid waste is prone to produce hydrogen sulfide during the fermentation process in the box, so a tail gas treatment device needs to be set. The existing tail gas treatment device usually uses activated carbon for adsorption. Although the activated carbon adsorption has high efficiency, it cannot be reused, resulting in high cost and the risk of secondary pollution. Therefore, it needs to be improved. CONTENT OF THE INVENTION

[0005] In order to reduce the tail gas treatment cost and reduce the occurrence of secondary pollution and other problems, the present application provides a tail gas treatment device of high-temperature fermentation treatment equipment.

[0006] The tail gas treatment device of high-temperature fermentation treatment equipment provided by the present application adopts the following technical scheme: a tail gas treatment device of high-temperature fermentation treatment equipment, comprising an exhaust fan and a tail gas treatment box for communicating with the fermentation box, the tail gas treatment box is communicated with the air outlet of the exhaust fan, and a filter element for adsorbing tail gas is arranged in the tail gas treatment box; a water tank for opening at the upper part is arranged at the bottom of the tail gas treatment box, the tail gas treatment box is provided with a dripping assembly for dripping the lye in the water tank to the filter element, and the water tank can receive the liquid at the bottom of the tail gas treatment box.

[0007] By adopting the technical scheme, the hydrogen sulfide generated in the fermentation box is transported to the tail gas treatment box by the air extractor, the hydrogen sulfide is adsorbed by the filter core, the alkali solution in the water tank is dripped and soaked on the filter core by the dripping assembly, and the hydrogen sulfide gas is absorbed by the filter core and the dripping assembly together, so that the removal efficiency of the hydrogen sulfide gas is improved, meanwhile, the liquid after the hydrogen sulfide is neutralized by the alkali solution in the filter core returns to the water tank, so that the alkali solution in the water tank is circulated and dripped on the filter core, so that the filter core has the ability to continuously absorb the hydrogen sulfide, when the pH of the alkali solution decreases to close to neutral, the new alkali solution is replaced, so that the cost of removing the hydrogen sulfide is reduced, and the secondary pollution caused by the hydrogen sulfide is reduced.

[0008] Preferably, the filter core adopts a multi-amine-based needle-punched cloth.

[0009] By adopting the technical scheme, the fibers in the multi-amine-based needle-punched cloth have a large specific surface area, and the surface contains a large number of weakly alkaline amine functional groups, which can synergistically react with the alkali solution to promote the absorption of the hydrogen sulfide by the alkali solution.

[0010] Preferably, the top of the tail gas treatment box is provided with a dripping cavity, the bottom of the dripping cavity is provided with a plurality of dripping holes, the dripping assembly comprises a pump body and a pipe body, the pump body is connected with the water tank, and the pipe body is used to connect the pump body and the dripping cavity.

[0011] By adopting the technical scheme, the alkali solution in the water tank is transported to the dripping cavity by the pump body and the pipe body, and the alkali solution is uniformly dripped into the filter core through the dripping holes in the bottom of the dripping cavity, so that the efficiency of the filter core in absorbing the hydrogen sulfide is improved.

[0012] Preferably, the bottom of the tail gas treatment box is provided with a plurality of backflow holes.

[0013] By adopting the technical scheme, due to the opening provided at the upper part of the water tank, the liquid after the reaction of the alkali solution and the hydrogen sulfide returns to the water tank through the backflow holes in the bottom of the tail gas treatment box.

[0014] Preferably, grilles are arranged at both ends of the tail gas treatment box, and the filter core is located between the two grilles.

[0015] By adopting the technical scheme, the filter core is stably fixed in the box through the grilles at both ends of the tail gas treatment box, so that the treatment of the hydrogen sulfide gas by the filter core is improved.

[0016] Preferably, air inlet covers and air outlet covers are detachably arranged at both ends of the tail gas treatment box, and the two grilles are respectively clamped between the air inlet cover and the tail gas treatment box and between the air outlet cover and the tail gas treatment box.

[0017] By adopting the technical scheme, the air inlet cover and the air outlet cover are detachably arranged at both ends of the tail gas treatment box, so that the maintenance and replacement of the filter core are facilitated.

[0018] Preferably, the plurality of grid plates in the grid are all arranged obliquely to the direction of the filter core.

[0019] By adopting the above technical scheme, the grid plate is arranged obliquely to the direction of the filter core, so that the gas can generally reduce the liquid flowing out to the outside of the tail gas treatment box.

[0020] Preferably, the tail gas treatment box body is provided with a mounting rack, and the water tank is pullably mounted on the mounting rack.

[0021] By adopting the above technical scheme, the water tank is pullably mounted on the mounting rack, so as to facilitate replacement of the liquid in the water tank.

[0022] To sum up, the present application has at least one of the following beneficial technical effects:

[0023] The hydrogen sulfide generated in the fermentation box body is transported to the tail gas treatment box by the air extractor, the filter core absorbs the hydrogen sulfide, the alkaline solution in the water tank is transported and dripped on the filter core by the dripping assembly, and the filter core absorbs the hydrogen sulfide gas together, so as to improve the removal efficiency of the hydrogen sulfide gas. The liquid after the hydrogen sulfide is neutralized in the alkaline solution in the filter core returns to the water tank, so that the alkaline solution in the water tank is circulated and dripped on the filter core, so that the filter core has the ability to continuously absorb hydrogen sulfide. When the pH of the alkaline solution decreases close to neutral, a new alkaline solution is replaced, so as to reduce the cost of hydrogen sulfide removal and reduce the secondary pollution of hydrogen sulfide. BRIEF DESCRIPTION OF DRAWINGS

[0024] Figure 1 is the installation structure diagram of the fermentation box body and the tail gas treatment device in the embodiment of the present application.

[0025] Figure 2 is the installation structure diagram of the tail gas treatment box in the embodiment of the present application.

[0026] Figure 3 is the front view of the tail gas treatment box after being cut open in the embodiment of the present application.

[0027] Figure 4 is the internal structure diagram of the tail gas treatment box after being cut open in the embodiment of the present application.

[0028] Reference signs: 1, fermentation box body; 11, support; 12, mounting rack; 2, air extractor; 3, tail gas treatment box; 31, dripping cavity; 32, dripping hole; 33, backflow hole; 34, grid; 4, filter core; 5, water tank; 6, pump body; 7, pipe body; 8, air inlet cover; 9, air outlet cover. DETAILED DESCRIPTION

[0029] The following will be described in detail in combination with the accompanying Figures 1-4 The present application will be further described in detail.

[0030] The application discloses a tail gas treatment device of a high-temperature fermentation treatment equipment. Figure 1 The tail gas treatment device comprises an air extractor 2 and a tail gas treatment box 3 which are connected with the fermentation box 1, the upper surface of the fermentation box 1 is respectively fixedly provided with a support 11 and a mounting rack 12, the air extractor 2 is mounted on the support 11, and the tail gas treatment box 3 is mounted on the mounting rack 12. During the fermentation process of the organic solid waste in the fermentation box 1, hydrogen sulfide and other gases are generated, the gases are extracted by the air extractor 2, removed in the tail gas treatment box 3 and then discharged to the outside, so that air pollution is reduced.

[0031] The air inlet of the tail gas treatment box 3 is connected with the air outlet of the air extractor 2 through a pipeline, and a filter core 4 for absorbing hydrogen sulfide is arranged in the tail gas treatment box 3. Figure 2 Figure 3 A water tank 5 is arranged below the tail gas treatment box 3, and the water tank 5 contains lye, and the lye in the application is sodium hydroxide. The mounting rack 12 is provided with a dripping assembly for dripping the lye in the water tank 5 on the filter core 4. The filter core 4 and the lye cooperatively absorb hydrogen sulfide, so that the removal efficiency of the hydrogen sulfide gas is improved.

[0032] The filter core 4 in the application adopts a multi-amine-based needle-punched cloth. The multi-amine-based needle-punched cloth is prepared by first soaking the acrylic needle-punched cloth in ethanol, then washing the acrylic needle-punched cloth with distilled water until the acrylic needle-punched cloth is neutral, drying the acrylic needle-punched cloth, soaking the acrylic needle-punched cloth in a triethylenetetramine solution and drying the acrylic needle-punched cloth. The fibers in the multi-amine-based needle-punched cloth have a large specific surface area, and the surface of the fibers contains a large number of weakly alkaline amine functional groups. The weakly alkaline amine functional groups can cooperatively react with the lye, so that the efficiency of absorbing hydrogen sulfide is improved.

[0033] The dripping assembly comprises a pump body 6 and a pipe body 7, the pump body 6 is mounted on the mounting rack 12, the top of the tail gas treatment box 3 is provided with a dripping cavity 31, a plurality of dripping holes 32 are arranged at the bottom of the dripping cavity 31, and the pump body 6 is connected with the dripping cavity 31 through the pipe body 7. Figure 2 Figure 4 A plurality of backflow holes 33 are arranged at the bottom of the tail gas outlet box, the upper portion of the water tank 5 is provided with an opening, and the water tank 5 is arranged below the tail gas treatment box 3. The water inlet of the pump body 6 is connected with the water tank 5 through a hose. In order to facilitate the replacement of the lye in the water tank 5, the water tank 5 can be pulled out and mounted at the bottom of the mounting rack 12. The lye in the water tank 5 is transported into the dripping cavity 31 through the pump body 6 and the pipe body 7, the lye is evenly dripped into the filter core 4 through the dripping holes 32 at the bottom of the dripping cavity 31, the liquid obtained by neutralizing the lye and hydrogen sulfide and the excess lye are backflowed into the water tank 5 through the backflow holes 33 to form a circulation, so that the filter core 4 has the ability of continuously and efficiently absorbing hydrogen sulfide gas, and the lye is replaced when the pH of the lye approaches neutral.

[0034] The air inlet of the tail gas treatment box 3 is connected with the air outlet of the air extractor 2 through a pipeline, and a filter core 4 for absorbing hydrogen sulfide is arranged in the tail gas treatment box 3. Figure 3 Figure 4 ​​​Further, the tail gas treatment box 3 is provided with openings at two ends, and the tail gas treatment box 3 is detachably connected with an air inlet cover 8 and an air outlet cover 9 at the openings at the two ends respectively, and the tail gas treatment box 3 is provided with grilles 34 at the two ends, and the filter element 4 is located between the two grilles 34. The two grilles 34 are clamped between the air outlet cover 9 and the tail gas treatment box 3 and between the air inlet cover 8 and the tail gas treatment box 3 respectively. The filter element 4 is stably fixed in the box through the grilles 34 at the two ends of the tail gas treatment box 3, so that the treatment of the hydrogen sulfide gas by the filter element 4 is improved.

[0035] The plurality of grille 34 plates in the grille 34 in the embodiment are all inclined to the direction of the filter element 4. The grille 34 plates are inclined to the direction of the filter element 4, so that the gas can generally reduce the liquid flowing out to the outside of the tail gas treatment box 3.

[0036] The implementation principle of the tail gas treatment device of the high-temperature fermentation treatment equipment in the embodiment is as follows: the hydrogen sulfide generated in the fermentation box 1 is transported into the tail gas treatment box 3 through the air extractor 2, the drip assembly transports the lye in the water tank 5 to drip on the filter element 4, and the lye and the filter element 4 cooperate to absorb the hydrogen sulfide gas, so that the removal efficiency of the hydrogen sulfide gas is improved. Meanwhile, the liquid after the lye in the filter element 4 neutralizes the hydrogen sulfide and the excess lye return to the water tank 5, so that the lye in the water tank 5 is circulated to drip on the filter element 4, so that the filter element 4 has the ability to continuously absorb the hydrogen sulfide. When the pH of the lye decreases to close to neutral, the new lye is replaced, so that the cost of removing the hydrogen sulfide is reduced, and the secondary pollution caused by the hydrogen sulfide is reduced.

[0037] Unless otherwise defined, technical terms or scientific terms used in the present application shall be understood as the common meaning understood by a person with ordinary skills in the art to which the present application belongs. The terms "first", "second", "third" and the like used in the specification and claims of the present application do not represent any order, number or importance, but are only used to distinguish different components. The terms "one" or "a" and the like do not represent a quantity limitation, but represent the existence of at least one. The terms "including", "containing" and the like mean that the elements or objects appearing before "including" or "containing" cover the elements or objects listed after "including" or "containing" and their equivalents, and do not exclude other elements or objects. The terms "upper", "lower", "left", "right" and the like only represent relative positional relationships, which may change accordingly when the absolute positions of the described objects change.

[0038] The above are the preferred embodiments of the present application, which do not limit the protection scope of the present application, therefore: any equivalent changes made on the structure, shape, principle of the present application shall be covered within the protection scope of the present application.

Claims

1. A tail gas treatment apparatus of a high-temperature fermentation treatment plant, characterized by: The application relates to a fermentation device, which comprises an air extractor (2) connected with a fermentation box (1) and a tail gas treatment box (3) connected with the air outlet of the air extractor (2), wherein a filter core (4) for adsorbing tail gas is arranged in the tail gas treatment box (3); a water tank (5) for opening at the top is arranged at the bottom of the tail gas treatment box (3), and the tail gas treatment box (3) is provided with a dripping assembly for dripping alkali liquid in the water tank (5) to the filter core (4), and the water tank (5) can hold liquid at the bottom of the tail gas treatment box (3).

2. The off-gas treatment apparatus of a high-temperature fermentation treatment plant according to claim 1, characterized by: The filter core (4) is a multi-amine-based needle punched cloth.

3. The off-gas treatment apparatus of a high-temperature fermentation treatment plant according to claim 1, characterized by: A dripping cavity (31) is arranged at the top of the tail gas treatment box (3), a plurality of dripping holes (32) are arranged at the bottom of the dripping cavity (31), the dripping assembly comprises a pump body (6) and a pipe body (7), the pump body (6) is connected with the water tank (5), and the pipe body (7) is used for connecting the pump body (6) and the dripping cavity (31).

4. The off-gas treatment apparatus of a high-temperature fermentation treatment plant according to claim 1 or 3, characterized by: A plurality of backflow holes (33) are arranged at the bottom of the tail gas treatment box (3).

5. The off-gas treatment apparatus of the high-temperature fermentation treatment plant according to claim 1, characterized by: Grilles (34) are arranged at both ends of the tail gas treatment box (3), and the filter core (4) is located between the two grilles (34).

6. The off-gas treatment apparatus of a high-temperature fermentation treatment plant according to claim 5, characterized by: Air inlet covers (8) and air outlet covers (9) are detachably arranged at both ends of the tail gas treatment box (3), and the two grilles (34) are respectively clamped between the air inlet covers (8) and the tail gas treatment box (3) and between the air outlet covers (9) and the tail gas treatment box (3).

7. The off-gas treatment apparatus of the high-temperature fermentation treatment plant according to claim 5, characterized by: A plurality of grille (34) plates in the grille (34) are arranged to be inclined to the filter core (4).

8. The off-gas treatment apparatus of the high-temperature fermentation treatment plant according to claim 1, characterized by: An installation frame (12) is arranged at the bottom of the tail gas treatment box (3), and the water tank (5) can be pulled out and installed on the installation frame (12).

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