Plasma and calcium oxide cooperation-gasified rubbish biomass gasification method and equipment

Abstract

A method and apparatus for gasifying a plasma and calcium oxide cooperating with gasified rubbish biomass, relating to the rubbish processing and new energy resource field, characterized in that, the rubbish biomass is fed into a suspending fluidized bed thermal decomposition furnace, meanwhile, the heated fluidization material is circularly fed into the thermal decomposition furnace and is mixed with the raw materials to transfer heat, so that the rubbish biomass raw material is heated to decompose, and then the thermal decomposed gas and solid carbocoal is fed into a turbulent fluidized bed gasification furnace, the water vapor is heated over 3100 DEG C and is sprayed into the gasification furnace by a plasma spray gun, the water vapor is reacted with the solid carbocoal to generate carbon monoxide and hydrogen gas, the required heat of the gasification reaction in the gasification furnace can be provided by the plasma spray gun and an exothermal reaction of the calcium oxide absorbing the carbon dioxide. According to the invention, synthesis gas can be produced by rubbish and biomass raw materials under the condition without air or oxygen, the main ingredients of the synthesis gas are hydrogen gas and carbon monoxide which can be directly used for city gas or producing hydrogen gas, methanol and dimethyl ether and so on clean energies.

Description

Technical field [0001] The invention relates to garbage and biomass treatment and new energy technology, in particular to garbage and biomass gasification technology and equipment. 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, my country'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, waste...

AI Technical Summary

Problems solved by technology

At present, my country'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 NO x 3. The economic output / input ratio is small, the economic benefit is poor, and government financial subsidies are required, so it cannot be widely used

However, the waste of agricultural and forestry surplus materials in our country is astonishing. Except for a small part of rural areas that are used to ferment and produce biogas, most of them are directly burned, landfilled, and rotted.

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