There are generally two ways to use biogas. One is to provide fuel. Generally, 1 million biogas will produce 0.7 kg of heat after combustion. The other is to use biogas to produce electricity. fuel to produce electricity. Adding livestock and poultry manure in the biogas project will produce biogas after fermentation. After fermentation, the manure can be used for fish farming, pig feed or fertilizer for crops, which can well promote the integration of agricultural planting and breeding.
Firstly, the biogas digester system mainly consists of feed inlet, feed pipe, fermentation tank, discharge pipe , a discharge room (pressure tank), an air guide pipe, a switch, a gas-water separator, a purifier, Consisting of a gas pipeline and its accessories.
Wastes such as dung, domestic sewage, straw and crop residue are sent to the fermentation tank through the feed pipe. After fermentation and bacterial decomposition, organic fertilizer is produced for people to irrigate and fertilize, as well as biogas. is generated for people. Life provides energy.
Biogas is a mixed gas whose main component is combustible methane (CH4). This process is called biogas fermentation. Biogas fermentation mainly relies on two types of bacteria. The first is called a decomposer. Its function is to decompose complex organic matter into simple organic matter and carbon dioxide, which is equivalent to transforming raw materials into semi-finished products. The second type of bacteria is called methanogens. Its function is to transform simple organic matter and carbon dioxide into methane to produce pfinished products.
When using, open the valve, the biogas will pass through the gas-water separator first to filter the water vapor, then the dried biogas will pass through the purifier to remove the water vapor. smell of gas. and then it can be used normally.
Secondly, its working principle can be simply summarized as follows: the gas compresses the liquid to discharge the fertilizer from the discharge room for irrigation, and the liquid compressed gas produces biogas for a indoor use. When biogas is generated in the tank, the biogas in the gas storage room continues to increase and the pressure continues to increase, forcing the liquid level in the main tank to drop, expelling part of the liquid into the room water pressure. , when the discharged liquid material exceeds the height of the discharge room, the liquid material is discharged and used as fertilizer.
▲Generate biogas
When people turn on the stove, the biogas decreases, the pressure in the biogas tank gradually decreases, and the hydraulic intermediate liquid continues to flow back to the main tank. . In this way, gas is produced and used continuously, so that the pressure balance between the fermentation room and the unloading room is always maintained.
▲Using biogas
A one-way valve is installed in the supply pipe to prevent the liquid from flowing back when the pressure increases. When the pressure is reduced, the waste escapes. the power port can also enter.
Finally, although its function is very powerful, it is difficult to install and use. Since methane is a flammable gas, construction and installation must be carried out in strict accordance with design standards and must be tested and inspected before it can be used. In the sameAt the same time, check the tightness of pipelines and switches frequently and replace them in time.
During use, it is necessary to ensure a continuous supply of methane and frequently feed about 50 kilograms of materials every day. The sediment should be pumped out of the slag tank once a month. , and the top cover should be removed to clean the floating shell layer once a year. So be careful when choosing to install.
Can 30 cubic meters of biogas produce electricity?
The principle of biogas electricity generation isUse biogas as fuel to produce electricity. Taking a gasoline generator as an example, it uses gasoline as fuel to produce electricity, while a biogas generator simply connects the biogas to the fuel chamber. To use biogas to produce electricity, theThe following aspects should be taken into account. First, the biogas must be dehydrated and desulfurized. Second, the air supply pressure must be stable.
It can produce electricity. If pig manure is fermented at room temperature (18-25 degrees), the gas production rate will be 24-45 cubic meters per day
Use one; 10 kW biogas generator, and the gas production rate will be 10 kW per hour. It uses approximately 6 cubic meters of gas and can produce electricity for 4 to 7 hours per day. Currently, biogas generators are very expensive. The best ones can be used for 30 years, and the average ones can be used for 10 years. The investment is enormous.