Device and method for producing synthesis gas through superheated steam, pure oxygen, high-temperature reheated pyrolyzed garbage and biomass

Abstract

The invention relates to a gas producing device, in particular to a device and method for producing synthesis gas through superheated steam, pure oxygen, high-temperature reheated pyrolyzed garbage and biomass. The device for producing the synthesis gas through the superheated steam, the pure oxygen, the high-temperature reheated pyrolyzed garbage and the biomass comprises a fluidized bed pyrolyzing furnace and a cyclone dust collector, a steam superheater is arranged on the outlet portion of the fluidized bed pyrolyzing furnace, a synthesis-gas high-temperature reheater is arranged on the rear portion of the cyclone dust collector, electric heating is adopted, and the temperature reaches up to 1200 DEG C or above. According to the device and method for producing the synthesis gas through the superheated steam, the pure oxygen, the high-temperature reheated pyrolyzed garbage and the biomass, the superheated steam is adopted to serve as part fluidizing air, a water gas reaction is fully utilized, the external oxygen supply of a reaction in the furnace is decreased, the nitrogen content in the synthesis gas is effectively controlled through the pure oxygen, the high quality of the synthesis gas is fully guaranteed, producing of tar and dioxin is thorough eradicated, and the difficult problem of garbage harmless treatment is solved.

Description

technical field [0001] The invention relates to a gas production device, in particular to a device and method for producing synthesis gas by using superheated steam, pure oxygen, high-temperature reheating pyrolysis garbage and biomass. Background technique [0002] The mass fraction of carbon in garbage and biomass is as high as 40%, followed by hydrogen, oxygen, nitrogen, chlorine, magnesium, silicon, phosphorus, potassium, calcium and other elements. These materials, under high-temperature reducing conditions, undergo complex thermochemical reactions. The essence of this process is that the atoms of carbon, hydrogen, oxygen and other elements in the macromolecular group, under the corresponding reaction conditions, according to the bonding principle of chemical bonds, become Molecules of flammable gases such as carbon monoxide, methane, hydrogen, etc., thus completing the energy conversion of chemical bonds. [0003] The existing technology generally adopts the method of...

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Problems solved by technology

[0003] The existing technology generally adopts the method of air fluidization in the furnace, combustion and external heating to produce gas, so that the combustion value of the synthesis gas is low; at the same time, it does not make reasonable use of superheated steam fluidized bed material and water gas reaction, and does not use high temperature reprocessing of the synthesis gas. Thermal process, the method is too simple, it will inevitably produce dioxin and a large amount of tar, causing secondary pollution to the environment

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