阅读说明：本技术 一种用于畜禽粪沼气池的沼气提纯净化装置 (Biogas purification and purification device for livestock and poultry manure biogas digester ) 是由 牛晓君 李霞 吕梦雨 王雅婷 余成华 于 2019-10-31 设计创作，主要内容包括：本发明公开了一种用于畜禽粪沼气池的沼气提纯净化装置,属于沼气提纯净化技术领域。主要包括原料存放箱、初级处理箱、脱水处理箱、梯度提纯筒；通过梯度提纯筒的设置,可根据对沼气纯度的需求的不同,对沼气进行相应的梯度纯化处理,可随时排出所需提纯后的气体,提高沼气提纯净化的效率；通过对沼气进行常温和增压两个方式的冷凝脱水,实现沼气的气水分离,气水分离效果好,然后通过干燥通板对上述处理后的沼气通过干燥剂进行干燥,完全除去沼气中的水分,避免设备腐蚀生锈；本发明具有提纯净化效果好、效率高、装置方便拆卸的优点,适合大量推广。(The invention discloses a biogas purification device for a livestock and poultry manure biogas digester, and belongs to the technical field of biogas purification. Mainly comprises a raw material storage box, a primary treatment box, a dehydration treatment box and a gradient purification cylinder; through the arrangement of the gradient purification cylinder, the methane can be subjected to corresponding gradient purification treatment according to different requirements on the purity of the methane, so that the gas required to be purified can be discharged at any time, and the purification efficiency of the methane is improved; the marsh gas is condensed and dehydrated in two modes of normal temperature and pressurization, so that the gas-water separation of the marsh gas is realized, the gas-water separation effect is good, and then the treated marsh gas is dried by a drying agent through a drying through plate, so that the moisture in the marsh gas is completely removed, and the corrosion and the rust of equipment are avoided; the invention has the advantages of good purification effect, high efficiency and convenient disassembly of the device, and is suitable for mass popularization.)

1. A biogas purification and purification device for a livestock and poultry manure biogas digester is characterized by mainly comprising a raw material storage box (1), a primary treatment box (2) with the bottom end connected with the raw material storage box (1) and used for primarily filtering, dedusting and primarily desulfurizing biogas placed in the raw material storage box (1), a dehydration treatment box (3) connected with the primary treatment box (2) and used for dehydrating the primarily treated biogas, and a gradient purification barrel (4) connected with the dehydration treatment box (3) and used for performing membrane treatment on the dehydrated biogas;

gradient purification section of thick bamboo (4) include that the bottom is equipped with barrel (40) of air inlet (400), locate in barrel (40) and along barrel (40) radius direction by interior outside be equipped with a plurality of gradient purification ring (41), adjacent two run through between gradient purification ring (41) and be equipped with a plurality of columns of ventilating (410), all be equipped with in every gradient purification ring (41) separating membrane (411), every gradient purification ring (41) all through the connecting pipe with the outside case that keeps in of correspondence is connected, and the junction all is equipped with solenoid valve (412).

2. The biogas purifying and purifying device for the livestock and poultry manure biogas digester as claimed in claim 1, its characterized in that, primary treatment case (2) include inside from top to bottom respectively for desulfurization chamber (200) and buffer chamber (201) and main part (20) of filter chamber (202), locate in filter chamber (202) and with dust removal filter screen (21) of buffer chamber (201) intercommunication, locate desulfurization chamber (200) inside upper end and bottom are equipped with a plurality of desulfurization shower nozzles (220) and pass through desulfurization collar (22) of connecting pipe intercommunication with outside desulfurizer case, and filter chamber (202) lateral wall is equipped with first material entry (203), and desulfurization chamber (200) upper end is equipped with gas outlet (204), and buffer chamber (201) lateral wall is equipped with and communicates with desulfurization chamber (200) and is located gas guide cover (205) of desulfurization collar (22) bottom, and desulfurization chamber (200) bottom is equipped with liquid outlet (206) of being connected with outside desulfurizer case.

3. The biogas purification and purification device for the livestock and poultry manure biogas digester as claimed in claim 2, wherein the dust removal filter screen (21) is of a hollow cylindrical structure with the upper end communicated with the buffer chamber (201), the lower end of the dust removal filter screen (21) is connected with a driving motor (210) through a rotating shaft, a cleaning brush (2020) is vertically arranged in the filter chamber (202), the cleaning brush (2020) is connected with a telescopic motor (2021) through an expansion link, the bottom end of the filter chamber (202) is provided with an ash outlet (2022), and a valve (2023) is arranged at the ash outlet (2022).

4. A biogas purification and purification device for livestock and poultry manure biogas digester as claimed in claim 3, characterized in that a transparent observation window (2024) is provided on the primary treatment tank (2) at the filter chamber (202).

5. The biogas purification and purification device for the livestock and poultry manure biogas digester as claimed in claim 1, wherein the dehydration treatment tank (3) comprises a second main body (30) which is internally provided with a dehydration chamber (300) and a condensation chamber (301) with a liquid accumulation outlet (3010) on the side wall, a first condenser (31) which is arranged in the condensation chamber (301) and is used for condensing and dehydrating biogas flowing out from the primary treatment tank (2) at normal pressure, a booster (32) which is arranged in the condensation chamber (301) and is used for boosting the biogas condensed at normal pressure, a second condenser (33) which is connected with the booster (32) and is used for condensing and dehydrating the pressurized biogas, and a drying through plate (34) which is horizontally arranged in the dehydration chamber (300) and contains a drying agent, wherein the dehydration chamber (300) is communicated with the condensation chamber (301).

6. The biogas purification device for the livestock and poultry manure biogas digester as claimed in claim 5, wherein a plurality of external thread penetration holes (340) are uniformly arranged on the drying through plate (34), a micro rotating paddle (341) is arranged in each external thread penetration hole (340), the center of the micro rotating paddle (341) is connected with a micro motor through a rotating shaft, and a drying net (342) containing a drying agent is arranged at the bottom end of each external thread penetration hole (340).

7. The biogas purifying and purifying device for the livestock and poultry manure biogas digester as claimed in claim 5, wherein the drying through plate (34) is of a drawer structure, the left side and the right side of the drying through plate are respectively provided with a slide bar (343), the left side and the right side of the inner wall of the water removing cavity (300) are respectively provided with a sliding groove (3000) connected with the slide bar (343) in a sliding manner, and the front end of the drying through plate (34) is provided with a pull handle (344).

Technical Field

The invention belongs to the technical field of biogas purification and purification, and particularly relates to a biogas purification and purification device for a livestock and poultry manure biogas digester.

Background

In recent years, with the rapid development of rural economy, a large amount of livestock and poultry in rural areas are bred, so that the living standard of people is improved, and meanwhile, the problems of rural environmental pollution and ecological damage caused by the difficulty in treatment of a large amount of livestock and poultry excrement are obvious day by day; at present, the quantity of livestock and poultry manure produced in China per year reaches 19 hundred million tons, which exceeds 2 times of the discharge quantity of industrial solid wastes; the prior various livestock and poultry excrement treatment technologies adopt a common mode to treat pollution by using methane.

The biogas is a combustible gas with high heat value and biomass energy which can be generally and easily obtained, and the heat value is about 20-25 MJ/m³The heat value of methane per cubic meter is equivalent to 0.8kg of standard coal, and compared with other fuel gases, the methane has good anti-explosion performance, is a recognized clean renewable fuel, has been developed and utilized for decades, and is used as a way for treating environmental pollution, so that the environmental pollution is reduced, and energy and efficient organic fertilizers are obtained. The method is characterized in that livestock and poultry manure is subjected to anaerobic fermentation to prepare biogas, and then the biogas is purified and purified to separate methane, so that not only can the dependence of people on fossil energy such as coal, petroleum and natural gas be reduced, but also the increasing demand of people on energy can be met, and the method is one of effective ways for solving the energy problem.

However, in the prior art, the effects of methane fermentation and purification are not good, and the following defects exist: 1) the biogas with different purities can not be obtained, so that different use requirements can be met, and the biogas treatment efficiency is reduced; 2) a single condensation dewatering mode is adopted, the gas-water separation effect is poor, and the corrosion inside the device is caused; 3) when the biogas is filtered and dedusted, the filter screen can be detached for replacement or needs to be replaced integrally, and when the filter screen is damaged only in a certain small area, the integral replacement can cause resource waste.

Disclosure of Invention

Aiming at the problems, the invention provides the biogas purification device for the livestock and poultry manure biogas digester, which has good purification effect, high efficiency and convenient disassembly.

The invention provides a biogas purification and purification device for a livestock and poultry manure biogas digester, which mainly comprises a raw material storage box, a primary treatment box, a dehydration treatment box and a gradient purification cylinder, wherein the bottom end of the primary treatment box is connected with the raw material storage box, the primary treatment box is used for primarily filtering, dedusting and primarily desulfurizing biogas placed in the raw material storage box, the dehydration treatment box is connected with the primary treatment box and is used for dehydrating the primarily treated biogas, and the gradient purification cylinder is connected with the dehydration treatment box and is used for performing membrane treatment on the dehydrated biogas;

gradient purification section of thick bamboo includes that the bottom is equipped with the barrel of air inlet, locates just be equipped with a plurality of gradient purification rings, adjacent two by interior outside along the barrel radial direction in the barrel run through between the gradient purification ring and be equipped with a plurality of columns of ventilating, all be equipped with the separation membrane in every gradient purification ring, every gradient purification ring all is connected with the outside case of keeping in of correspondence through the connecting pipe, and the junction all is equipped with the solenoid valve.

Furthermore, the primary treatment box comprises a first main body, a dust removal filter screen, a gas guide cover, a liquid outlet and a desulfurizing installation ring, wherein the first main body is internally provided with a desulfurizing cavity, a buffer cavity and a filter cavity from top to bottom respectively, the dust removal filter screen is arranged in the filter cavity and communicated with the buffer cavity, the upper end and the bottom end of the inner part of the desulfurizing cavity are provided with a plurality of desulfurizing nozzles, the desulfurizing installation ring is communicated with an external desulfurizing agent box through a connecting pipe, the side wall of the filter cavity is provided with a primary material inlet, the upper end of the desulfurizing cavity is provided with a gas outlet, the side wall of the buffer cavity is provided with a gas guide cover which is communicated with the desulfurizing cavity and positioned at the bottom end of the desulfurizing installation ring, the bottom end of the desulfurizing cavity is provided with a liquid outlet which is connected with the external desulfurizing agent box, dust and solid particles in the biogas can be removed through, can remove H in the biogas₂S gas impurities, and the gas purity of the methane is ensured.

Further, the dust removal filter screen is the hollow cylinder structure of upper end and cushion chamber intercommunication, and dust removal filter screen lower extreme has driving motor through the rotation axis connection, and the vertical clean brush that is equipped with in filter chamber, clean brush is connected with flexible motor through the telescopic link, and the filter chamber bottom is equipped with the ash hole, ash hole department is equipped with the valve, and when dust removal filter screen needs the clearance, it makes clean brush and dust removal filter screen outer wall contact to extend through flexible motor drive telescopic link, drives dust removal filter screen through driving motor and rotates and clear up it, and the ash that falls after the clearance can through ash hole discharge, through regularly clearing up dust removal filter screen, guarantees the filtration dust removal effect of dust removal filter screen, makes the marsh gas purity after the purification high, satisfies the operation requirement.

Furthermore, a transparent observation window is arranged at the position, located in the filter cavity, of the primary treatment box, dust accumulated in the primary treatment box is observed in real time through the transparent observation window, and then the primary treatment box is cleaned in time by opening a valve, so that the phenomenon that the interior of the device is cleaned due to more dust on the inner wall, and the secondary pollution of methane is caused is avoided.

Furthermore, the dehydration treatment box comprises a second main body, a first condenser, a supercharger, a second condenser and a drying plate, wherein the second main body is internally provided with a dehydration cavity and a condensation cavity, the side wall of the second main body is provided with a liquid accumulation outlet, the first condenser is arranged in the condensation cavity and is used for carrying out normal-pressure condensation and dehydration on methane flowing out of the primary treatment box, the supercharger is arranged in the condensation cavity and is used for supercharging the methane after normal-pressure condensation, the second condenser is connected with the supercharger and is used for carrying out condensation and dehydration on the pressurized methane, the drying plate is horizontally arranged in the dehydration cavity and contains a drying agent, and the dehydration cavity is communicated with the condensation; the marsh gas is condensed and dehydrated in two modes of normal temperature and pressurization, so that the gas-water separation of the marsh gas is realized, the gas-water separation effect is good, and then the treated marsh gas is dried by the drying agent through the drying through plate, so that the moisture in the marsh gas is completely removed, and the corrosion and the rustiness of equipment are avoided.

Further, evenly be equipped with a plurality of external screw thread see-through mouths on the dry logical board, every be equipped with miniature rotation paddle in the external screw thread see-through mouth, and there is a micro motor at miniature rotation paddle center through rotation axis connection, and every external screw thread see-through mouth bottom is equipped with the drying net that contains the drier, through micro motor drive miniature rotation paddle rotates, increases the velocity of flow through the marsh gas of drying net to improve the drying efficiency of marsh gas.

Further, dry logical board is the drawer structure, and the left and right sides is equipped with the draw runner respectively, the dewatering intracavity wall left and right sides be equipped with respectively with draw runner sliding connection's spout, dry logical board front end is equipped with the pull handle, takes out or puts into dry logical board from the dewatering intracavity through the pull handle to in time change the dry logical board of damage, avoid dry logical board to damage and influence drying efficiency.

Further, be equipped with on the drying net with the internal thread sleeve that the external screw thread sees through the mouth and connects, the drying net passes through the internal thread sleeve and is connected with the external screw thread sees through the mouth, conveniently dismantles and in time changes the drier, or in time clears up the drying net, improves the gas-water separation effect, avoids changing whole dry logical board and causes the wasting of resources.

The working principle of the invention is as follows: when the device is used for purifying the livestock biogas, the specific operation is as follows:

(1) firstly, introducing marsh gas in a raw material storage box into a filter cavity through a primary material inlet, removing dust and solid impurities from the marsh gas entering the filter cavity through a dust removal filter screen, then entering a buffer cavity, entering a desulfurization cavity through an air guide cover, and simultaneously spraying a desulfurizer in an external desulfurizer box to the marsh gas through a plurality of desulfurization nozzles to remove H in the marsh gas₂After S gas impurities, methane enters a dehydration treatment box through a gas outlet, and finally, the used desulfurizer is scattered to a liquid outlet and enters an external desulfurizer box for recycling after treatment;

(2) after entering a dehydration treatment box through an air outlet, the marsh gas enters a first condenser for normal-pressure condensation and dehydration, then enters a second condenser for condensation and dehydration after being pressurized by a supercharger, the marsh gas after twice condensation and dehydration enters a dehydration cavity, a micro motor is started, the micro motor drives a corresponding micro rotating paddle to rotate, the flow velocity of the marsh gas passing through a drying net is accelerated, and the marsh gas passing through the drying net enters a gradient purification cylinder;

(3) after entering the gradient purification cylinder, the biogas enters the separation membrane in the innermost gradient purification ring through the air inlet to remove carbon dioxide in the biogas for the first time, then enters the separation membrane in the next outer gradient purification ring through the plurality of ventilation columns to remove the carbon dioxide of the passing biogas for the second time, then sequentially passes through all the gradient purification rings from inside to outside, and enters the outer temporary storage box after removing the carbon dioxide of the biogas for a plurality of times, wherein the carbon dioxide can be removed from the biogas for different times according to different required biogas purities.

Compared with the prior art, the invention has the beneficial effects that: the invention provides a biogas purification device for a livestock and poultry manure biogas digester, which can perform corresponding gradient purification treatment on biogas according to different requirements on biogas purity through the arrangement of a gradient purification cylinder, can discharge the gas to be purified at any time, and improves the efficiency of biogas purification and purification; the cleaning brush is arranged to regularly clean the dust removal filter screen, so that the filtering and dust removal effects of the dust removal filter screen are ensured, the purity of the purified and purified methane is high, and the use requirement is met; the marsh gas is condensed and dehydrated in two modes of normal temperature and pressurization, so that the gas-water separation of the marsh gas is realized, the gas-water separation effect is good, and then the treated marsh gas is dried by a drying agent through a drying through plate, so that the moisture in the marsh gas is completely removed, and the corrosion and the rust of equipment are avoided; through the arrangement of the drying through plate which is detachably arranged and the drying net which can be directly screwed, the drying net is convenient to clean in time, the gas-water separation effect is improved, and resource waste caused by the replacement of the whole drying through plate is avoided; the invention has the advantages of good purification effect, high efficiency and convenient disassembly of the device, and is suitable for mass popularization.

Drawings

FIG. 1 is a schematic structural view of the present invention;

FIG. 2 is a schematic view of the internal structure of the primary treatment tank of the present invention;

FIG. 3 is a schematic structural view of a desulfurization mounting ring of the present invention;

FIG. 4 is a schematic view showing the internal structure of the dehydration treatment tank of the present invention;

FIG. 5 is a schematic diagram of the construction of a dry card according to the present invention;

FIG. 6 is a schematic view of the construction of the externally threaded permeate port of the present invention;

FIG. 7 is a schematic structural view of the internally threaded sleeve of the present invention;

FIG. 8 is a schematic view of the external configuration of the gradient purifier cartridge of the present invention;

fig. 9 is a cross-sectional view of a gradient purifier cartridge of the present invention.

Wherein, 1-raw material storage box, 2-primary treatment box, 20-main body I, 200-desulfurization cavity, 201-buffer cavity, 202-filter cavity, 2020-cleaning brush, 2021-telescopic motor, 2022-ash outlet, 2023-valve, 2024-transparent observation window, 203-primary material inlet, 204-air outlet, 205-air guide cover, 206-liquid outlet, 21-dust removing filter screen, 210-driving motor, 22-desulfurization mounting ring, 220-desulfurization spray head, 3-dehydration treatment box, 30-main body II, 300-dehydration cavity, 3000-chute, 301-condensation cavity, 3010-accumulated liquid outlet, 31-condenser I, 32-supercharger, 33-condenser II, 34-drying through plate, 340-external thread penetrating port, 341-miniature rotating paddle, 342-drying net, 343-slide bar, 344-drawing handle, 345-internal thread sleeve, 4-gradient purifying cylinder, 40-cylinder, 400-air inlet, 41-gradient purifying ring, 410-air column, 411-separating membrane, 412-electromagnetic valve.

Detailed Description