Gasification furnace of inner circulating biomass fluidized bed of dissymmetrical structure

Abstract

The invention provides a nonsymmetrical inner circulating organism fluidized gasification furnace, including a furnace body, a cyclone separator and a flying-ash return pipe, where there is an inclined wall surface established at the bottom of the furnace body, thus forming an inverted vertical section circular truncated cone with the vertical section being right angled trapezoid in shape and making one side near the cyclone separator form an isolating wall at an inclined angle alpha of 60 degrees-75 degrees, there is an ash discharging channel arranged on the isolating wall and a wind distributing plate situated at the bottom of the furnace body is a nonsymmetrical inverted cone-shaped structure, there is a slag outlet arranged on the top of the inverted cone, and there are air holes arranged on the wind distributing plate. The circulating fluidized bed is outer and inner circulations.

Description

technical field [0001] The invention relates to a device for pyrolysis and gasification of biomass. Background technique [0002] my country's biomass resource reserves are very rich. As a renewable energy source, its utilization can reduce the pressure on the demand for fossil fuels and at the same time slow down the greenhouse effect. Gasification technology can convert biomass into syngas for power generation or synthesis of liquid fuels, and has become one of the important technologies for biomass utilization. [0003] Existing biomass gasifiers mainly include fixed bed, fluidized bed, circulating fluidized bed and other types. Among them, the circulating fluidized bed technology has attracted much attention because of its strong adaptability of raw materials, large processing scale and wide application range. Circulating Hyundai beds are generally divided into two forms: external circulation and internal circulation. The external circulating fluidized bed uses high-s...

Images