Double hydraulic straw methane pool for self-circulation medium temperature two-step fermentation and forced discharging method

Abstract

The invention relates to a double hydraulic straw methane pool for self-circulation medium temperature two-step fermentation and a forced discharging method. The double hydraulic straw methane pool is characterized in that glass fiber reinforced plastics, plastics or steel plates are used for making a cuboid double hydraulic methane pool; a water pressure room doubles as an acidification pool, an acidification fluid automatically circulates, and sun insolation is carried out to realize double hydraulic self-circulation medium temperature fermentation without crusting; and forced feeding of a feeding push plate is carried out, thereby forced discharging is realized, the problem of straw biogas residue discharging is solved and independent gas production or mixed gas production of high-concentration straws and excrement is realized. The invention has the beneficial effects that the number of suitable users of the methane pool can be increased from 28 percent to 100 percent, which is beneficial to scale enlargement of the methane pool with energy saving, emission reduction and permanent persistence in scale enlargement and is beneficial to self-sufficiency of national rural domestic energy; the gas production efficiency is enhanced, and the volume of the pool body is reduced, thereby the cost of the methane pool is lowered and the methane pool can be supplied in free to nationwide farmers in the country. In addition, the double hydraulic straw methane pool is convenient to transport, can be installed per se and can be movably used.

Description

Technical field [0001] The invention belongs to the technical field of household biogas digesters, and relates to a dual-hydraulic double-hydraulic pressure straw fermented by a self-circulating medium temperature two-step method that can be heated by solar energy and can use crop straw and feces to generate biogas alone or mix straw and feces to generate biogas. Digester and forced discharge method. Background technique [0002] According to reports, my country has built 40 million household biogas digesters. These 40 million biogas digesters are all constructed and manufactured in accordance with the national standard GB / T4750-2002 "Standard Atlas of Household Biogas Digesters" and the industry standard NY / T1699-2009 "Technical Conditions for Glass Fiber Reinforced Plastic Household Biogas Distillers" of the Ministry of Agriculture Therefore, all of these 40 million biogas digesters are buried double hydraulic pressure biogas digesters as stipulated in the standard. The ...

AI Technical Summary

Problems solved by technology

Due to the lowest fermentation efficiency at low temperature, if you want to produce more gas, you can only expand the volume of the fermentation tank. This is why farmers are willing to build a large tank of 10 cubic meters, but the reason why 6 cubic meters of fiberglass biogas tanks are not easy to sell

The high price of the pond is inevitable, but there is nothing to do; ④The feed process in the existing biogas digester is completely dependent on the "liquid flow" of the biogas slurry from the feed port (feed pipe) to the discharge port (discharge pipe) of the fermentation tank. "Complete, in order to ensure this flow, it is required that the concentration of the feed liquid can only be within 10%

The straw feed liquid is high-concentration and full of wood fibers. Although it is rolled into short sections with a length of 5 cm, the biogas residue after fermentation is still a mess, so it cannot be used in the existing double hydraulic biogas digester. Realize inflow and outflow in a flowing state

In a word, all the above are the reasons why the existing double water pressure biogas digesters cannot use straw to produce biogas

In the prior art, some straws are crushed and then added to the double hydraulic pressure biogas digester. The purpose is obviously to solve the difficulty of discharging and improve the fermentation efficiency.

Its shortcomings are obvious. Straw crushing consumes electricity, which increases the cost of biogas and increases carbon emissions. Moreover, straw dust pollution is even more disgusting in the whole process of grinding, transportation, loading and use.

Images