Water-cooling water sealing type biomass gasifier and gasifying method

Abstract

The invention provides a water-cooling water sealing type biomass gasifier and a gasifying method. The water-cooling water sealing type biomass gasifier comprises a furnace body, wherein a bracket used for fixing the furnace body is arranged on the exterior of the furnace body; the furnace body is connected with the bracket through a fixing pin; a feeding hole and a fuel gas outlet are formed in the upper part of the furnace body; a first air blowing hole and a secondary air blowing hole are formed in the lower part of the furnace body; a water cooling device and an explosion-proof device are arranged on the furnace body; a water-cooling tube is arranged as a water cooling device main body; the water-cooling tube is arranged on the upper part of the furnace body; the explosion-proof device comprises an upper explosion-proof device, a middle explosion-proof device and a lower explosion-proof device; the upper explosion-proof device is arranged on the upper part of the furnace body; the lower explosion-proof device is arranged on the lower part of the furnace body. The water-cooling water sealing type biomass gasifier provided by the invention has the advantages of simple structure, quick gasification reaction, excellent sealing property, high explosion-proof safety, excellent cooling effect and capability of thoroughly separating fuel gas, tar and residue.

Description

technical field [0001] The invention relates to the technical field of gasifiers, [0002] In particular, the present invention relates to a water-cooled water-sealed biomass gasifier and a gasification method. Background technique [0003] With the dwindling reserves of traditional fossil energy (coal, oil, natural gas) and the environmental pollution caused by the use of fossil energy, which directly threatens the survival and development of human beings, it has become a priority for governments to attach importance to and develop renewable and environmentally friendly energy. consensus. Biomass is an organic substance produced by plants through photosynthesis. It is widely distributed, has a large amount of availability, is cleaner than fossil energy, and has the characteristics of zero carbon dioxide emissions. It is an important renewable energy source. Through thermochemical, biochemical and other methods, biomass can be transformed into clean gas or liquid fuels, wh...

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Problems solved by technology

The input air supply pipe of the combustion bed is connected with the air pipeline, and the air is provided as a combustion-supporting gas. The working process of the gasifier in this invention is too complicated, it is not convenient for inspection and maintenance, and the production cost is too high

[0006] For example, Chinese Patent Invention Publication CN101003754B proposes a kind of entrained bed gasification furnace which has a simple structure and is convenient for maintenance. Gasification raw material and gasification agent inlet, crude gas outlet and slag outlet, in which the furnace liner, quenching ring, water seal groove, deflector and deflector are arranged inside the furnace shell from top to bottom; gasification raw material and gasification The agent inlet is set on the top of the gasifier and communicated with the furnace; the crude gas outlet is set on the side wall of the furnace shell below the water seal tank; the lower part of the gasifier is equipped with a slag outlet; the upper part of the inner wall of the furnace shell is positioning bracket; and the lower part of the inner wall of the furnace shell is provided with a baffle tube bracket, but this device still has the following disadvantages: first, there is only one explosion-proof water seal device, and the pressure in the furnace is not maintained enough; second, the crude gas is exported from the bottom, Leading to incomplete separation of gas, oil and slag

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