Plasma gasification equipment for changing garbage raw material to be syngas of high heat value

Abstract

A plasma gasification device for converting raw garbage materials to synthetic gas with high heat value relates to a gasification process device of garbage. The device mainly comprises a gasification reaction furnace, a circular air pipe, a circular blower, a plasma burner, and a screw feeder, wherein the gasification reaction furnace is divided into a baking zone, a pyrolysis zone, a gasification zone, a burning zone and an air chamber according to operation conditions, a flue gas output port is arranged above the baking zone, a synthetic gas output port is arranged at the joint site of the pyrolysis zone and the gasification zone, and a flue gas recirculation input port is arranged inside the air chamber; and a flue gas recirculation air pipe is connected between the flue gas output port and an induced draft port of the circular blower, the air outgoing port of the circular blower is connected with the flue gas recirculation input port, a plasma spray gun is installed on the side wall of the burning zone, and the discharge port of the screw feeder protrudes from the front part of the baking zone into the furnace. The inventive device can treat garbage and convert the garage into synthetic gas with high heat value, which can be used for producing secondary clean energy products, at the same time.

Description

Technical field [0001] The invention relates to garbage treatment equipment, in particular to gasification equipment for garbage. Background technique [0002] At present, the energy shortage and the environmental protection situation are severe. 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 treatment of municipal solid waste mainly includes sanitary landfill technology, composting (biochemical) technology and incineration technology. Most areas use sanitary landfill to treat municipal solid waste, which not only takes up a lot of land, wastes resources, but also easily pollutes Land and ground...

AI Technical Summary

Problems solved by technology

At present, China's treatment of municipal solid waste mainly includes sanitary landfill technology, composting (biochemical) technology and incineration technology. Most areas use sanitary landfill to treat municipal solid 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. There are hidden dangers of secondary pollution; using the incineration power generation method to deal with urban domestic waste can reduce the amount and recycle domestic waste, but waste incineration power generation has the following disadvantages: 1. The main goal is to treat waste, and the energy utilization rate is low. Only about 20%; 2. The emissions of flue gas and carbon dioxide are large, and the pollutants in the flue gas include dust, hydrogen chloride, hydrogen fluoride, sulfur oxides, nitrogen oxides, carcinogenic and highly toxic substances (dioxins, furans), heavy metals ( Mercury, lead, chromium, etc.), although there is a flue gas purification system, it is difficult to completely eliminate, especially the excessive discharge of dioxins and furans. At present, there is still a lack of technically reliable terminal purification processes for NOx and dioxins; 3. Economical The output / input ratio is small, the economic benefits are poor, and government financial subsidies are required, so it cannot be widely used

Since domestic waste is characterized by high water content, low calorific value, and high chlorine content, it is easy to generate highly toxic dioxins during incineration. The synthetic gas converted by conventional equipment has low calorific value and the quality cannot meet the application requirements. , therefore, there has been no commercial application report on converting domestic waste into secondary clean energy

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