A constant density biomass gasifier

A technology of gasification furnace and biomass, which is applied in the direction of gasification process, manufacture of combustible gas, petroleum industry, etc. It can solve the problems of furnace cross-section oxide layer, irregular shape of reduction layer, bed overheating, high packing density, etc. Achieve the effect of improving tar cracking efficiency, improving gasification time period, and good economic applicability

CN112980513BActive Publication Date: 2022-03-18BEIJING INSTITUTE OF TECHNOLOGYGY
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
Publication Date
2022-03-18

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Abstract

The invention provides a constant density biomass gasification furnace, which includes a furnace body, a movable furnace cover and a self-rotating nozzle, and a pressing mechanism is arranged on the movable furnace cover, wherein the pressing mechanism includes a driving device and a pressing plate, The pressing plate is used to provide downward constant pressure to the biomass fuel in the furnace body under the drive of the driving device; it can be seen that the present invention provides a constant pressure to the furnace through the pressing mechanism arranged on the movable furnace cover. A continuous top-down pressure or intermittent impact on the biomass fuel in the storage area makes the fuel layer drop steadily and improves the compactness of the material layer, eliminating the bridging phenomenon of the material layer; at the same time, the present invention The self-rotating nozzle allows the gasification agent to enter the reaction zone evenly from the central direction, so that the oxidation layer and the reduction layer are stable and balanced, and the burn-through phenomenon is eliminated; It is easy to realize automatic control, which greatly reduces the operating cost and has better economic applicability.
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Description

technical field

[0001] The invention belongs to the technical field of biomass gasification furnaces, in particular to a constant density biomass gasification furnace. Background technique

[0002] As we all know, biomass is a sustainable green resource, and it is a reliable resource acquisition channel for my country's energy structure transformation, air pollution control, and CO2 emission reduction. However, due to scattered biomass resources, low bulk density, and difficulties in collection and transportation, most of the biomass has not been properly used. At present, in our country, agriculture randomly burns or discards straw, excessive and inefficient use of chemical fertilizers, all of which have caused serious environmental pollution and consumed a lot of energy of local governments. To completely solve the above problems, there is an urgent need for a large-scale high-value biomass treatment technology-biomass gasification technology.

[0003] Biomass gasificati...

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Embodiment Construction

[0047] In order to enable those skilled in the art to better understand the solutions of the present application, the technical solutions in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application.

[0048] The object of the present invention is to provide a constant density biomass gasification furnace in which the fuel layer moves down at a constant density, the gasification agent is fed in from the automatic rotating nozzle in the center of the furnace body, the gas distribution is uniform, the reaction of each reaction layer is continuous and stable, and the gas production efficiency is high. . Among them, the fuel factor and combustible gas purification factor are the key factors that limit the development of biomass gasification technology. This invention is designed to solve the two factors that restrict the development of gasification technology, especially f...