Medium-temperature thermal cracking furnace for solid waste

Abstract

The invention discloses a medium-temperature thermal cracking furnace for solid waste. The medium-temperature thermal cracking furnace comprises a closed feeding mechanism, a furnace body, a multi-point three-dimensional air distributing mechanism, an ash breaking and discharging mechanism, a closed water cooling and ash discharging mechanism, a gas dust removing and cooling mechanism and a Rootsblower. The cracking furnace adopts an oxygen-poor medium-temperature thermal cracking technology, so that macromolecular chemical bonds of organic matter of the solid waste are broken into small molecular combustible gas, carbon and ash in the oxygen-poor environment at the temperature of 500-650 DEG C, the produced combustible gas is purified by a cooling and purifying device and then output tobe used for internal combustion engine power generation or gas-fired boilers.

Description

Technical field [0001] The invention relates to the field of innocuous treatment of solid wastes, and in particular to an environmental protection equipment used for medium-temperature thermal cracking treatment of solid wastes. Background technique [0002] At present, in the field of harmless treatment and utilization of solid waste, especially in the fields of domestic solid waste, industrial solid waste, and domestic waste, when some solid waste is processed, direct landfill, composting or incineration is mostly used. the way. Because some solid wastes contain pollutants such as chemical components and heavy metals, landfill or composting will cause these pollutants to enter the soil and cause environmental pollution. However, direct incineration cannot be burned alone due to the low calorific value of solid wastes, and must be combined with a large amount of coal. Combustion of other high-calorific value fuels can be completely combusted, and direct incineration is high-tem...

AI Technical Summary

Problems solved by technology

Because some solid wastes contain pollutants such as chemical components and heavy metals, landfilling or composting will cause these pollutants to enter the soil and cause environmental pollution, while direct incineration cannot be burned alone due to the low calorific value of solid waste, and must be combined with a large amount of coal. Combustion can only be completed by mixed combustion with other high-calorific value fuels, and direct incineration is high-temperature combustion in an oxygen-rich environment, which is prone to produce a large number of pollutants such as nitrogen oxides and dioxins. Harmful substances such as heavy metals in solid waste It is easy to transfer to the gas and discharge with the flue gas, forming more pollution sources. The large air flow required by the oxygen-enriched environment is also likely to increase the content of fly ash in the flue gas, which greatly increases the difficulty and cost of flue gas treatment.

For the harmless treatment of solid waste and the better extraction and utilization of energy, the existing solid waste treatment technology can no longer meet the requirements of environmental protection and energy saving

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