Two-stage oxygen-enriched steam biomass gasification reactor

Abstract

The invention relates to a two-stage type oxygen-rich steam biomass gasification reactor. The two-stage type oxygen-rich steam biomass gasification reactor comprises a gasification furnace and a chiller which are communicated through a connecting pipeline. The gasification furnace comprises an upper section and a lower section, wherein the upper section is a material dispersion area, and the lower section is a pyrolysis reaction area; a fish-shaped distributor is arranged at the middle part of the upper section, and the fish-shaped distribution is a cone with a lower part of a hemispherical surface and is fixed at the medial axis in the gasification furnace by a support; a combustion gas device is arranged on the side wall of the fish-shaped distributor. The chiller comprises a chilling gas cooling section, a heat exchanger cooling section and a slag discharge system, wherein the chilling gas cooling section is positioned at the lower part of the chiller, the slag discharge system is arranged at the bottom, and a chilling gas inlet and a water inlet are respectively arranged at the upper part and lower part of the side wall; the heat exchanger cooling section is positioned at the upper part of the chiller, and a heat exchanger is arranged in the heat exchanger cooling section. The biomass gasification reactor provided by the invention can improve the calorific value of gas with high efficiency; furthermore, the content of tar oil in the produced gas is low, and generated H2 and CO can be used for generating gasoline and diesel oil by an F-T synthesis process after purification treatment; the two-stage type oxygen-rich steam biomass gasification reactor provided by the invention is also suitable for rural areas and forest regions and can perform centralized treatment on wastes of crops.

Description

technical field [0001] The invention relates to processing equipment for utilizing crop waste. Background technique [0002] Biomass gasification is the process of burning biomass (rice husk, straw, sawdust, etc.) in an oxygen-deficient state to generate combustible gas. According to the different combustion methods, there are various types of gasification devices. Among the existing devices, the most common ones are updraft fixed bed gasifier and downdraft fixed bed gasifier. Although the structure is simple, the cost is low, and the operation is convenient, However, due to the constraints of the structure of the gasifier itself, in the process of biomass gasification, the gasification efficiency and the calorific value of the generated gas are relatively low, while the tar content in the gas is relatively high. Contents of the invention [0003] The object of the present invention is to provide a biomass gasification reactor which can further increase the calorific valu...

AI Technical Summary

Problems solved by technology

According to the different combustion methods, there are various types of gasification devices. Among the existing devices, the most common ones are updraft fixed bed gasifier and downdraft fixed bed gasifier. Although the structure is simple, the cost is low, and the operation is convenient, However, due to the restriction of the structure of the gasifier itself, in the process of biomass gasification, the gasification efficiency and the calorific value of the generated gas are relatively low, while the tar content in the gas is relatively high

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