Domestic garbage transformation technique, system and apparatus without conventional fuel for combustion supporting

Abstract

The invention provides a process, a system and equipment for converting household garbage without support combustion of the prior fuels, which relates to a process and equipment for processing garbage. The process is characterized in that the household garbage is sent into a gasification furnace or an incinerator after separating, dehydrating by rolling compaction and air-drying treatment; garbage fuel is converted in the furnace by a mode of gasification or incineration, and is subjected to baking, pyrogenation, gasification and carbon residue burn-out in the furnace; the converted synthesis gas is used for cleaning energy; waste heat of incineration is absorbed by heat-exchange equipment for reclamation; garbage rolling liquid is sent into a digesting machine for anaerobic fermentation so as to produce biogas, the biogas is used as auxiliary fuel of the incinerator, and the digested residue and residual liquid are used for fertilizing crops; and inorganic substances separated from the garbage are used as raw materials to manufacture bricks, and clinker discharged from the incinerator or the gasification furnace is used for producing cement or fertilizer. The process, the system and the equipment comprehensively utilize the garbage so as to achieve complete dissolving treatment, and the equipment has a simple structure and low investment cost, and is easy to popularize..

Description

Technical field [0001] The invention relates to garbage treatment technology, in particular to gasification and incineration system equipment for garbage. Background technique [0002] At present, the energy shortage and the environmental protection situation are grim. With the development of my country's national economy and the continuous expansion of urban scale, garbage is increasing rapidly, and its content of harmful components is getting higher and higher. If it is not handled properly, it will pollute the environment and threaten people's health. This will not only restrict The progress of the society also affects the sustainable development of the national economy. At present, China's domestic waste treatment mainly includes sanitary landfill technology, composting (biochemical) technology and incineration technology. Most areas use sanitary landfill method to deal with domestic waste, which not only takes up a lot of land, wastes resources, but also easily pollutes...

AI Technical Summary

Problems solved by technology

At present, China's domestic waste treatment mainly includes sanitary landfill technology, composting (biochemical) technology and incineration technology. Most areas use sanitary landfill method to deal with domestic waste, which not only takes up a lot of land, wastes resources, but also easily pollutes land and groundwater; composting only utilizes about 40% of organic matter, and it is necessary to build supporting incineration process equipment and sanitary landfills. Heavy metals in composting products may pollute the soil and enter the food chain crops, and there are also secondary Hidden dangers of secondary pollution; the incineration method is used to deal with urban domestic waste, and the waste heat is used for power generation or heat supply, which can reduce the amount and recycle domestic waste. However, due to the high water content and low calorific value of domestic waste, ordinary garbage The incineration equipment needs to use conventional fuels such as coal or fuel oil to support combustion during operation. At the same time, there are disadvantages such as high pollutant content in the flue gas, inability to effectively eliminate carcinogenic and highly toxic dioxins and furans, and complex flue gas purification systems; the existing Garbage incineration equipment is only suitable for processing urban domestic waste, but cannot be popularized in villages and towns. It cannot realize low-cost and meet environmental protection requirements for processing village and township domestic waste with higher moisture content and lower calorific value.

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