Downdraft plasma garbage gasification reaction chamber and gasification process

Abstract

The invention relates to a downdraft plasma garbage gasification reaction chamber and gasification process. The reaction chamber comprises an automatic feeding device, a primary gasification zone, an automatic ignition device, a plasma reaction zone and furnace temperature monitoring system, a furnace charge level monitoring system, an inlet / outlet gas temperature monitoring system, an inlet / outlet pressure monitoring system and a flame monitoring system; the primary gasification zone is internally provided with a vibrating grate and an automatic leveling device, and the plasma reaction zone is in an integrated structure consisting of a secondary refining zone and a gas refining zone. The process comprises the following steps of: automatic feeding; primary gasification; and plasma secondary refining and plasma gas refining. In the invention, the caloricity of garbage is utilized to generate gas, and then the generated gas and cinder are further processed by using a plasma torch, so that harmful substances in the garbage are removed, the gas yield is increased, the discharged waste residues are reduced, the disposable investment cost for garbage gasification and operation costs arereduced, and gas is cleaner.

Description

technical field [0001] The invention relates to the plasma gasification power generation technology of domestic garbage, in particular to a side-suction plasma garbage gasification reaction chamber and a gasification process thereof. Background technique [0002] The domestic waste disposal methods in my country are mainly landfill and incineration. Landfill not only occupies a large amount of land, but also pollutes groundwater, which is a last resort. Nevertheless, there are not many sites available for landfill in areas where land resources are scarce. Although the incineration method has a high volume reduction ratio and can recover energy, it has been strongly opposed by the public due to pollution problems such as dioxins. There is an urgent need to develop a new generation of alternative incineration technologies that are environmentally friendly and energy-saving. [0003] Plasma is the fourth state of matter, which has many unique physical and chemical properties ...

AI Technical Summary

Problems solved by technology

[0006] However, the current plasma garbage gasification technology still has many deficiencies. First of all, direct gasification of garbage with a plasma torch requires a huge amount of power, and its power consumption rate can reach 30% to 45% of its power generation capacity. Excessive electricity leads to greatly increased operating costs, making it unworthy of commercial operation

Second, this method gasifies garbage, and a dioxin treatment device needs to be added to the subsequent gas purification process, which increases the initial one-time investment and greatly increases the equipment cost

Third, using a plasma torch to directly gasify garbage, due to the uneven distribution of its temperature field, the garbage cannot be completely treated at high temperature, and there will be a large amount of dioxins and other harmful substances in the discharged waste residue, which makes the treatment of its waste residue become a problem. a problem

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