Ammonification anaerobic fermentation equipment and method for production of straw biogas

Abstract

The invention relates to ammonification anaerobic fermentation equipment for producing straw biogas. The ammonification anaerobic fermentation equipment comprises a gas tank, a first reaction chamber and a second reaction chamber, wherein the first reaction chamber and the second reaction chamber are communicated respectively with the gas tank through gas pipes. The first reaction chamber and thesecond reaction chamber are communicated through a broth backflow pipe. The broth backflow pipe is provided with a flow stop valve. The invention also provides a method of an ammonification anaerobicfermentation. The method comprises that the first reaction chamber and the second reaction chamber are utilized alternately for a continuous fermentation adopting an ammonification reaction and an anaerobic fermentation reaction. The ammonification anaerobic fermentation equipment and method realize a high efficiency biotransformation of straw and an improvement of economic benefits of straw and solve a problem of low anaerobic fermentation efficiency of straw. The ammonification anaerobic fermentation equipment adopts a solar auxiliary heating two-chamber recirculation bioreactor with functions of intermittent feeding and continuous fermentation, does not need applied energy and has a low operation cost. In the invention, a complete conversion of waste straw is realized. The ammonification anaerobic fermentation equipment has a simple structure and a good operability, and is suitable for a large-scale industrial production.

Description

technical field [0001] The invention relates to the field of energy development, in particular to a structure of an ammonification anaerobic fermentation equipment for producing straw biogas and a method for using the equipment to produce straw biogas. Background technique [0002] According to statistics, at present, my country's annual output of straw is about 700 million tons, and the amount of remaining straw is about 400 million tons. The random dumping and random burning of the remaining straw has caused a large number of social, economic and ecological problems such as air pollution, fire accidents, and traffic jams. It is urgent to find new ways of utilization. At the same time, as a renewable energy source, straw contains huge biomass energy. The use of anaerobic fermentation technology can convert crop straw into straw biogas, commonly known as "straw biogas". Straw biogas is mainly methane, which can be directly burned and used to generate electricity. The resid...

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Problems solved by technology

[0011] The purpose of the present invention is to provide an ammonification anaerobic fermentation equipment and method for producing straw biogas to solve the problems of low efficiency of straw anaerobic fermentation, high production cost, complex equipment structure, secondary pollution, etc.

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