CN203487151U - Internal thermal garage solid state anaerobic fermentation device - Google Patents

Abstract

The utility model patent discloses an internal heating type garage solid anaerobic fermentation device. The technical solution includes the main body (1) of the garage-type fermentation device, the airtight door (2), the spray pipe (3), the leachate collection pipe (11), the leachate storage and conditioning facilities (12), the heat exchange device (15 ), the aeration pipe (18) and other parts, use the aeration pipe (18) and the exhaust pipe (5) to realize the aerobic temperature rise in the early stage of fermentation, which greatly reduces the heat energy required for the fermentation process; use the leachate collection pipe (11) and the leachate storage and conditioning facility (12) will return the collected leachate to the top of the solid material for spraying after conditioning, so as to realize mass transfer and heat transfer, and effectively solve the problem of acid inhibition in the anaerobic fermentation process of traditional high-solid content materials. The system has no discharge of biogas slurry; the heating coil (14) and the heat exchange device (15) are used to provide the heat required in the middle and late stage of fermentation to ensure the continuous and stable operation of the anaerobic fermentation system, which has broad application prospects.

Description

An internal heating garage solid-state anaerobic fermentation device

technical field

This patent belongs to the technical field of microbial fermentation, and relates to a solid-state fermentation device that uses biomass waste such as crop stalks, livestock and poultry manure, domestic organic waste, and garden waste as raw materials to ferment and produce biogas energy. Oxygen fermentation device. the

Background technique

my country has few energy reserves and low output, while energy demand is increasing significantly, and the contradiction between supply and demand is becoming increasingly acute. Anaerobic fermentation of crop straw, livestock and poultry manure, domestic organic waste, fruit and vegetable residues, etc. from a wide range of sources, the biogas generated is used for life and production, realizing the diversification of my country's energy strategy and alleviating the tense situation of energy supply and demand. the

At present, anaerobic fermentation biogas production technology can be divided into liquid fermentation and solid state fermentation. Liquid fermentation has been widely used in anaerobic fermentation of low-concentration materials such as livestock and poultry manure and organic wastewater, and is relatively mature at present. However, due to the low concentration of the fermentation material, a large amount of water is required, and a large amount of energy is required for heating to reach the temperature of medium-temperature or high-temperature anaerobic fermentation, especially in the cold northern regions, where energy consumption is huge in winter, which greatly reduces the cost of biogas projects. economic benefits. In addition, a large amount of biogas slurry is produced after the material is fermented, which is likely to cause secondary pollution. Due to the advantages of high concentration of fermentation materials, wide adaptability of raw materials, and basically no biogas slurry, solid-state fermentation has attracted more and more attention. In recent years, many scholars at home and abroad have carried out a large number of researches on solid-state fermentation technology. Prone to produce acid inhibition, etc. are the main problems faced by the current solid-state fermentation technology. the

Contents of the invention

In view of the problems of high energy consumption, low fermentation efficiency, easy secondary pollution of the above-mentioned liquid fermentation technology, difficulty in mass and heat transfer of solid-state fermentation, easy acid inhibition, and difficulty in regulating the fermentation process, this patent researches and develops an internal heating garage solid-state anaerobic Oxygen fermentation device, the device is composed of aeration and exhaust system, leachate collection and spraying system, heating and heat preservation system, sealing system, etc., in which the aeration and exhaust system adopts "aerobic fermentation heating-solid-state anaerobic fermentation The biogas production process greatly reduces the heat energy required for the fermentation process; the leachate collection and spraying system sprays the solid material through the circulation of liquid material liquid to achieve mass transfer and heat transfer, effectively solving the traditional anaerobic fermentation process of high solid content materials The problem of acid suppression ensures the continuous and stable operation of the anaerobic fermentation system, and the anaerobic fermentation process is regulated by adding bacteria; the heating and heat preservation system can be used as a backup heat source in the middle and late stages of anaerobic fermentation to ensure the smooth progress of anaerobic fermentation; the sealing system The anaerobic environment of the fermentation process is guaranteed by an airtight door. the

The technical scheme that the utility model solves its technical problem to take is as follows:

The above-mentioned solid-state anaerobic fermentation device in an internal heating garage includes a garage-type fermentation device main body, an airtight door, a spray pipe, a sprinkler, a leachate collection pipe, leachate storage and conditioning facilities, a heat exchange device, an aeration pipe and exhaust pipe. Among them, the aeration pipe is set at the center of the bottom of the device, the exhaust pipe is set at the top of the device, the leachate collection pipe is set at the bottom of the device and connected with the leachate storage and conditioning facilities, and the spray pipe and sprinkler are set at The top of the device is located above the solid material in the device, and the side wall of the device is equipped with a heating coil connected to an external heat exchange device. the

In the above-mentioned internal heating garage solid-state anaerobic fermentation device, percolation plates are arranged on the side wall and bottom of the device, and the leachate generated during the fermentation process of the material is collected into the leachate collection pipe through the pores on the percolation plate, and then enters the garage-style fermentation The leachate storage and conditioning facilities outside the device. the

In the above-mentioned solid-state anaerobic fermentation device of the internal heating type garage, the aeration pipe at the bottom of the device is placed under the bottom percolation plate and in the center of the fermentation device, and the feed liquid flows through the percolation plate when it infiltrates. Filtrate storage and tempering facilities, and then block the sprayer; on the other hand, prevent large particle size materials from entering the aeration pipe and blocking the ventilation holes. the

In the above-mentioned solid-state anaerobic fermentation device of the internal heating type garage, the leachate in the leachate storage and conditioning facility is tempered and heated, and then evenly sprayed on the solid material in the garage-type fermentation device through the spray pipe and sprayer, and the infiltration The filtrate gradually infiltrates from the upper part of the solid material, which solves the problems of heating, mass transfer and heat transfer and acid inhibition of the solid material. the

In the above-mentioned internal heating type garage solid-state anaerobic fermentation device, the garage type fermentation device is surrounded by a slope structure, which is beneficial to the collection of leachate. the

In the solid-state anaerobic fermentation device of the internal heating garage, the heating coil is placed behind the side percolation plate, which can save space and increase the effective volume of the fermentation device. the

Description of drawings

Figure 1 is the front view of the solid-state anaerobic fermentation device in the internal heating garage;

Fig. 2 is the top view of the solid-state anaerobic fermentation device of the internal heating type garage;

Fig. 3 is the left view of the solid-state anaerobic fermentation device in the internal heating garage. the

Detailed ways

As shown in Figure 1, Figure 2, and Figure 3:

1 is the main body of the garage-type fermentation device, 2 is the airtight door, 3 is the spray pipe, 4 is the sprinkler, 5 is the exhaust pipe, 6 is the biogas collection pipe, 7 is the sensor sleeve, 8 is the spotlight, 9 10 is a sampling pipe, 11 is a leachate collection pipe, 12 is a leachate storage and conditioning facility, 13 is a fan, 14 is a heating coil, 15 is a heat exchange device, 16 is a side percolation plate, 17 It is the bottom infiltration plate, 18 is the aeration pipe, 19 is the bottom infiltration tank, and 20 is the side infiltration tank. the

Embodiments of the present invention are described below in conjunction with accompanying drawing 1-Fig. 3:

As shown in Figure 1, Figure 2 and Figure 3, the internal heating garage solid-state anaerobic fermentation device is composed of a leachate collection and spraying system, an aeration and exhaust system, a heating and heat preservation system, and a sealing system, among which the leachate collection The spray system includes spray pipe 3, sprayer 4, leachate collection pipe 11, leachate collection storage and conditioning facilities 12, etc., which are used to collect and store the leachate in the material fermentation process, and after adding bacteria After various conditioning methods, the material is returned to the top of the fermentation device to spray the material, to realize mass transfer and heat transfer, and to solve the acid inhibition problem of solid-state fermentation; the aeration and exhaust system includes exhaust pipe 5, fan 13, aeration pipe 18, etc., used for aerobic aeration of materials in the early stage of fermentation, and gas replacement in the fermentation device after fermentation, to avoid harmful gases such as residual hydrogen sulfide from causing harm to operators; the heating and insulation system consists of heating coil 14, heat exchange The device 15 and the like are used for supplementing heat during the anaerobic fermentation process of the material; the sealing system mainly includes an airtight door 2 for ensuring an anaerobic environment for material fermentation. the

Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention without limitation. Although the present invention has been described in detail with reference to the preferred embodiments, those of ordinary skill in the art should understand that the technical solutions of the present invention can be Modifications or equivalent replacements without departing from the spirit and scope of the technical solutions of the present invention shall be covered by the claims of the present invention. the

Claims (5)

1. An internal heating type garage solid-state anaerobic fermentation device, comprising a garage type fermentation device main body (1), airtight door (2), spray pipe (3), sprayer (4), leachate collection pipe (11 ), leachate storage and tempering facilities (12), heat exchange device (15), aeration pipe (18) and exhaust pipe (5), it is characterized in that, the aeration pipe (18) is arranged on the The central position of the bottom of the device, the exhaust pipe (5) is arranged at the top of the device, the leachate collection pipe (11) is arranged at the bottom of the device and is connected with the leachate storage and conditioning facility (12) connected, the spray pipe (3) and the sprayer (4) are arranged on the top of the device and above the solid material in the device, and the side wall of the device is equipped with an external heat exchange device (15) to the heating coil (14). the 2. The internal heating type garage solid-state anaerobic fermentation device according to claim 1, characterized in that, the side wall and the center of the bottom of the device are provided with a side percolation plate (16) and a bottom percolation plate (17). the 3. The internal heating garage solid-state anaerobic fermentation device according to claim 1, characterized in that, the aeration pipe (18) is arranged below the bottom percolation plate (17). the 4. The solid-state anaerobic fermentation device of internal heating type garage according to claim 1, characterized in that, the bottom of the device is surrounded by slope structures. the 5. The internal heating garage solid-state anaerobic fermentation device according to claim 1, characterized in that, the heating coil (14) is arranged behind the side percolation plate (16). the

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