Classified gasification system of solid wastes

Abstract

The invention discloses a classified gasification system of solid wastes. The classified gasification system is formed by connecting a feeding system, a self-flowing type moving bed gasification furnace, a high-temperature plasma torch, a high-temperature reforming purification furnace, a primary air blower, a secondary air blower I, a secondary air blower II, a clean fuel gas draught fan, a heat recycling system, a gas washing tower, a washing and drying tower, a degassing tower, a first de-foaming and defogging device, a second de-foaming and defogging device, a third de-foaming and defogging device and a fuel gas power generation and heat supply system. A heat exchange system is mounted at the tail part of the plasma assisted high-temperature reforming purification furnace, so that heat needed by reaction of the moving bed gasification furnace can be recycled as much as possible, and the comprehensive utilization rate of energy is improved; secondary pollution or blocking problems and the like caused by dioxin, gasified tar and (or) heavy metal, and the like are avoided. The system disclosed by the invention has the characteristics of wide raw material adaptability, high gasification efficiency, no pollution, simplicity in installation and maintenance, easiness of being popularized and the like.

Description

technical field [0001] The invention relates to the field of thermochemical treatment of solid waste, in particular to a method for reforming and purifying high-volatility solid waste such as municipal solid waste, crop straw, waste tires, waste plastics, medical waste, and hazardous waste by using air , water vapor or their mixture is used as a gasification agent to produce clean gas and use it for power generation and heating system. Background technique [0002] With the rapid growth of China's economy and the continuous improvement of the level of urbanization, the generation of solid waste, especially municipal solid waste, has also increased rapidly. Although sanitary landfill and waste incineration technologies have alleviated the siege of domestic waste to a certain extent, the use of sanitary landfill not only takes up a lot of valuable land resources and wastes the energy of the waste itself, but also causes long-term damage to water, air, and soil. Pollution thre...

AI Technical Summary

Problems solved by technology

Although this technology discards the first-stage plasma torch that consumes a lot of power, this process needs to send all the solid residues produced by the first-stage rotary kiln to the subsequent plasma reactor for gasification and melting, and it is still difficult to effectively improve the efficiency of the equipment. reliability, and failed to effectively reduce energy consumption

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