Packaged technology for converting kitchen garbage into bio-fuel
A kitchen waste and biofuel technology, applied in the direction of biofuel, waste fuel, fuel, etc., can solve the problems of high moisture content of kitchen waste, long period of bioconversion method, and large energy consumption.
Inactive Publication Date: 2008-10-08
RES CENT FOR ECO ENVIRONMENTAL SCI THE CHINESE ACAD OF SCI
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Problems solved by technology
The incineration method has obvious efficiency in reducing the volume and volume of kitchen waste, but due to the high moisture content and low calorific value of kitchen waste, it needs to add auxiliary fuel during combustion and consumes a lot of energy; the phenomenon of garbage siege caused by landfill is becoming more and more Outstanding, landfill sites are increasingly scarce, and the problem of landfill leachate polluting groundwater has attracted more and more attention, so landfill is not suitable for the disposal of kitchen waste; the cycle of biological conversion is relatively long, and the The above kitchen waste is accompanied by plastic packaging materials and other components that are difficult to biodegrade, which greatly restricts the biotransformation of this kind of waste; The problem has become increasingly prominent, endangering people's health, and has aroused great concern from the society
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[0007] Put the kitchen waste into a high-temperature and high-pressure reactor, add water 30 times the weight of the dry matter, seal it after mixing, replace the residual air in the reactor with argon, and then heat it to the reactor at a rate of 20°C per minute. to 400°C, keep the temperature constant for 40 minutes, stop heating, and cool down to room temperature naturally. The gas generated in the reaction process is discharged through the air valve and collected with an air bag, the cooled liquid-solid mixture is separated by suction filtration, the solid matter is dried to obtain carbon-containing fuel, and the liquid matter is extracted with ether to obtain fuel oil.
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Aiming at the current situation that the resource utilization of the kitchen garbage is hard in China, the invention utilizes the characteristic that the kitchen garbage mainly includes food garbage, plastics and artificially- synthesized macromolecular compounds, and transforms the garbage into fuels which are mainly liquids through high-temperature high-pressure hydrothermal treatment; the calorific value can reach 32.6 MJ / Kg. the utilization method of the invention provides an effective resource utilization approach and a final disposal method for the kitchen garbage.
Description
technical field [0001] The invention relates to a technical process for converting biomass waste into biofuel, which belongs to the research and development of solid waste recycling technology in the field of environmental protection and resource comprehensive utilization, and is especially suitable for high value-added resource utilization of food waste. Background technique [0002] Kitchen waste is an important biomass resource. The daily output of kitchen waste in my country is more than 20,000 tons. Only Beijing produces 1,600 tons of kitchen waste and Shanghai 1,200 tons. The volume of these wastes accounts for more than 30% of all domestic waste. At present, the main means of dealing with kitchen waste are incineration, landfill, biotransformation, and feed. The incineration method has obvious efficiency in reducing the volume and volume of kitchen waste, but due to the high moisture content and low calorific value of kitchen waste, it needs to add auxiliary fuel dur...
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IPC IPC(8): C10G1/00C10L5/46
CPCY02E50/30Y02E50/10
Inventor 张付申刘振刚吴建芝
Owner RES CENT FOR ECO ENVIRONMENTAL SCI THE CHINESE ACAD OF SCI