CN200943080Y - A small plastic household secondary high-efficiency biogas generator - Google Patents

Abstract

The utility model relates to a small plastic secondary high-efficiency methane generator. Manufacture of the generator adopts the high-quality rubber PE or PP as the raw material and undergoes the heat processing to form up. The structure is the fermentation pond that is connected by the primary fermentation pond and the secondary fermentation pond that are communicated at the bottom. The upper part of the in-feeding pipe is connected in the primary fermentation pond and the outlet of the in-feeding pipe is positioned right above the bottom where the primary fermentation pond slants for 10 to 15 degree. The secondary fermentation pond is communicated with the lower part of the discharging pond. The upper part of the discharging pond is the water pressure room and the upper part of the water pressure room is provided with a overflow port. The upper part of the primary and the secondary anaerobic fermentation pond is the gas collection cavity. The upper part of the gas collection cavity uses the air vent to communicate the methane conveying pipe and then sends into the fuel gas oven for use after dehydration. The utility model has a scientific product design. Three elements for gas generation and fermentation, namely HRT, SRT and MRT have been reasonably utilized. The device has the advantages of reasonable structure, light weight, low cost, acid and alkaline resistance, aging resistance, shock and leakage prevention, high airtight performance, high heat preservation and high rate of gas generation: which is 50% than the cement of the same volume; and thus is fit for large-batch production in the factory.

Description

A small plastic household secondary high-efficiency biogas generator

Technical field:

The utility model relates to renewable energy biogas, in particular to a small plastic household secondary high-efficiency biogas generator.

Background technique:

Biogas has been used in my country for more than a century. China is in the leading position in the world in the promotion and application of biogas technology. At present, the number of household biogas digesters in China ranks first in the world, making nearly 10 million farmers use biogas as a renewable energy source. Due to the biogas fermentation product biogas, Biogas slurry and biogas residue can exert great social and economic benefits in the construction of agricultural ecological projects. In the past, the single production of energy has changed to improve rural environmental sanitation, protect the ecological environment, and develop ecological agriculture. This is a new trend in recent years. And the important factor that this technology gets attention and promotion in the future. However, the household biogas digesters that have been built in my country so far mostly use conventional building materials, the structure is heavy, the consumables are large, labor-intensive and time-consuming, the quality of the ponds is not suitable for control, the overall cost is high, and the gas production rate is low. These are the constraints of renewable energy biogas The bottleneck of promotion and further popularization.

Invention content:

The purpose of this utility model is to provide a small plastic household secondary high-efficiency biogas generator that is light in weight, low in cost, acid and alkali resistant, aging resistant, long in service life, and capable of standardized large-scale factory production and standardized on-site installation.

The technical scheme of the utility model is:

The manufacture of the generator uses high-quality plastic PE or PP as raw material for thermal processing. Its structure is that the fermentation tank is connected by the first-level fermentation tank and the second-level fermentation tank connected at the bottom, and the upper part of the feed pipe is connected in the first-level fermentation tank. The outlet of the material pipe is located directly above the bottom of the primary fermentation tank with an inclination of 10 to 15 degrees; the secondary fermentation tank is connected to the lower part of the discharge tank, and the upper part of the discharge tank is a water pressure room, and the upper part of the water pressure room has an overflow port; 1. The upper part of the secondary anaerobic fermentation tank is the gas collection bin, and the upper part of the gas collection bin is connected to the biogas delivery pipe through the gas outlet, and then sent to the gas stove for use after deflow and dehydration.

The product design of the utility model is scientific, and the three major factors of gas production and fermentation, HRT, SRT, and MRT, are all reasonably utilized, with reasonable structure, light weight, low cost, acid and alkali resistance, aging resistance, shockproof and leakproof, and airtight performance Good, high heat preservation, high gas production rate: 50% higher than the same volume of cement pool; it is convenient for mass production in factories.

Description of drawings:

Fig. 1 is a structural schematic diagram of a small plastic household secondary high-efficiency biogas generator of the present invention.

As shown in Figure 1, the utility model small plastic household secondary high-efficiency biogas generator selects high-quality plastic PE or PP as raw material, adopts modern thermoforming industrial technology to make the primary fermentation tank 3, the secondary fermentation tank 2, and the discharge tank 1. The feed pipe 5, the feed port 6 and other components are processed and formed at one time, and each part is connected into a whole through the connecting piece. The feed port 6 and the feed pipe 5 are integrally connected to the primary anaerobic fermentation tank 3, the primary anaerobic fermentation tank is connected to the secondary anaerobic fermentation tank 2 and then connected to the discharge tank 1, and the upper part of the discharge tank It is a water pressure room 9, an overflow port 10 is arranged on the upper part of the water pressure room, and an air outlet is arranged on the upper part of the gas collection bin 8 to connect to the methane gas pipeline 7. The bottom of the first-stage fermentation tank is made into an inclined plane 4 inclined at 10-15 degrees, which is conducive to the falling of the raw materials added by the feed pipe.

When in use, the raw materials are added to the feed port 6 in proportion, enter the primary anaerobic fermentation tank 3 through the feed pipe 5, and then enter the secondary anaerobic fermentation tank 2 after a certain period of fermentation. After sufficient fermentation, the generated biogas is collected in the upper gas collection bin, and is output through the gas outlet through the biogas output pipe 7 for use. The fermented biogas slurry and biogas residue are high-quality ecological organic fertilizers, which are discharged through the discharge tank 1, the water pressure chamber 9 and the overflow port 10.

Claims (2)

1, a kind of small-sized plastic cement family secondary high-efficiency methane generator, comprise fermentation vat, material-output tank, feed-pipe, opening for feed, water pressure house, biogas transfer lime, it is characterized in that: fermentation vat is formed by connecting by one grade fermemtation pond and the second order fermentation pond that the bottom communicates, and feed-pipe top is connected in the one grade fermemtation pond, and the outlet of feed-pipe is positioned at directly over the bottoms of one grade fermemtation pond inclination 10～15 degree; The second order fermentation pond is communicated with the material-output tank bottom, and material-output tank top is water pressure house, and overflow port is arranged at water pressure house top.

2, small-sized plastic cement according to claim 1 family secondary high-efficiency methane generator, it is characterized in that: top, I and II anaerobically fermenting pond is the gas collection storehouse, the biogas transfer lime is connected by the air outlet in top, gas collection storehouse.