Marsh gas power generation method

Abstract

The invention discloses a marsh gas power generation method which comprises the following steps of: wetting the smashed straw and water at a mass ratio of 1:2, adding an inoculum, and carrying out stack retting in a stirring way for 3-7 days; adding fresh chicken manure into a fermentation tank, and adding water to prepare a mixture of which the moisture content is 91%-95% to carry out anaerobic fermentation, wherein the temperature is 35-50DEG C, the pH value is 6.8-7.2, and the fermentation time is from 12 hours to 5 days; and educing the generated marsh gas, desulfuring by a biological desulphurization method, storing the marsh gas by a wet type marsh gas storing cabinet, generating the electricity by adopting a pure marsh gas internal combustion engine generator set with a function of combined heat and power generation, discharging mixed liquid materials, and classifying by means of solid-liquid separation. After the marsh gas power generation method is adopted, the continuous generation of the marsh gas required for power generation can be guaranteed, the long-term use of the gas generation of the fermentation tank can be guaranteed, the function generated by the marsh gas can not be obviously attenuated, the acidification phenomenon is hard to happen in the process of fermentation, and the burning of the straw can be further avoided since various straw materials of agricultural products are sufficiently used.

Description

technical field [0001] The invention relates to anaerobic fermentation technology, in particular to a method for producing biogas by anaerobic fermentation of chicken manure in chicken farms to generate electricity. Background technique [0002] At present, large-scale and intensive farms are developing vigorously, and the livestock and poultry manure produced are increasingly affecting people's daily life. Chicken manure is one of the pollutants produced by large-scale chicken farms. Because chicken manure often contains a large number of pathogenic bacteria and pest eggs, if it is directly applied to the soil without high-level harmless treatment, it will easily lead to the spread of pest eggs and pathogenic bacteria. The high content of volatile nitrogen has a great impact on the surrounding air and other environments, so there is an urgent need for harmless and odorless treatment of chicken manure. At present, the treatment of livestock and poultry animal manur...

AI Technical Summary

Problems solved by technology

[0004] At present, in the research on the mixed fermentation of manure crops, there are not many studies involving mixed anaerobic fermentation of chicken manure and straw, and there is no method to use the biogas produced by this method to generate electricity. Therefore, the inventors devoted themselves to research and provided a A method for generating electricity from the biogas produced by the anaerobic fermentation process of large-scale chicken farms