Food steamer type multi-purpose solid anaerobic fermentation device

Abstract

The invention relates to an anaerobic fermentation device, in particular to a food steamer type multi-purpose solid anaerobic fermentation device which is applicable to anaerobic or facultative anaerobic fermentation processes for producing biogas, alcohol, liquor and the like through solid fermentation on various scales. The anaerobic fermentation device consists of the following structures: an intermediate tank body is arranged above a bottom-layer tank body, a tank cover is arranged above the intermediate tank body, an annular groove is arranged at the outer edges of the upper parts of shells of the bottom-layer tank body and the intermediate tank body, the bottom of the intermediate tank body is arranged in the annular groove, the lower part of the intermediate tank body is provided with a sieve plate, the bottom-layer tank body is provided with a steam inlet, and the top of the tank cover is provided with a gas outlet. The anaerobic fermentation device is divided into a plurality of sections just as a food steamer, and the sections are sealed with one another, and can be freely combined with multiple sections according to the production scale; and the anaerobic fermentation device overcomes the defect that mechanization and automation are not easy to realize during loading and unloading for solid fermentation, and enable the mechanization and automation to be easy to realize.

Description

technical field [0001] The invention relates to an anaerobic fermentation device, in particular to a cage-type multi-purpose solid anaerobic fermentation device, which is suitable for anaerobic or facultative anaerobic fermentation processes such as solid fermentation production of methane, solid fermentation alcohol, solid fermentation liquor, etc. . Background technique [0002] Liquid fermentation is the development direction of modern fermentation industry, but in some fermentation fields, solid fermentation still shows certain advantages, even irreplaceable. For example, using agricultural waste, poultry manure, domestic garbage, etc. as raw materials to ferment biogas, and using liquid fermentation, the concentration of the fermentation liquid is limited, usually the maximum total solids can only reach 8%, the utilization rate of the device is low, and the fermentation is normal. According to the volume of the fermentation device, only about 1 cubic meter of biogas ca...

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Problems solved by technology

For example, using agricultural waste, poultry manure, domestic garbage, etc. as raw materials to ferment biogas, and using liquid fermentation, the concentration of the fermentation liquid is limited, usually the maximum total solids can only reach 8%, the utilization rate of the device is low, and the fermentation is normal. According to the volume of the fermentation device, only about 1 cubic meter of biogas can be produced per cubic meter per day, while solid fermentation can reach 4-5 cubic meters. A biogas fermentation device of the same scale can be reduced to 1 / of the original volume 4-1 / 5; sweet sorghum is a high-yielding sugar crop, its seeds and stalks can be used to produce ethanol, it is a very promising crop, the carbohydrates synthesized by sweet sorghum per mu can produce 3.2 1 liter of alcohol, but only 1 liter of corn, 0.2 liters of wheat, 0.6 liters of sorghum for grain, the yield per unit area of ​​sweet sorghum stalks is generally 4000-5000 kg, 400-500 kg of liquor per mu, and 400 liters of alcohol, which is higher than that of sugarcane 30%, is a very promising renewable energy crop. If liquid fermentation is used, it needs to be squeezed. First, the process becomes complicated; The rate is reduced, and the process can be simplified if solid fermentation is used

However, solid fermentation has always troubled people because it is not convenient for mechanization and automation, and has been hindering the development of solid fermentation, and even caused some traditional industries to find another way. In fact, the quality of solid fermentation is changed to liquid fermentation. It is difficult to reach the level of solid fermentation, but in order to pursue yield and benefit, quality has to be sacrificed. It is really a last resort.

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