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Biomass gasification furnace with external burner and biomass gasification method

A burner and biomass technology, which is used in the gasification of granular/powdered fuel, the manufacture of combustible gas, the chemical industry, etc. Small and other problems, to achieve the effect of stable control of production process conditions, improvement of heat utilization efficiency, and reduction of carbon content in slag discharge

Inactive Publication Date: 2015-09-23
李轼
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, my country's biomass pyrolysis and gasification technology is relatively backward. At present, the biomass pyrolysis and gasification treatment equipment mainly adopts fixed bed gasifier and normal pressure fluidized bed gasifier. A large amount of phenol water, high tar content, serious secondary pollution, small gas production per furnace, and low calorific value of the combustible gas produced have been restricted for use; the temperature fluctuation range of the atmospheric fluidized bed gasifier is large, The production process is difficult to control, the operation reliability is poor, the heat loss is large, the slag discharge has a high carbon content, the produced combustible gas contains a lot of nitrogen, the calorific value is low, and the gas has a high dust concentration and is difficult to purify, so it has not been obtained so far. widely used
The backwardness of biomass pyrolysis gasification technology hinders the clean and efficient utilization of biomass energy in my country

Method used

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  • Biomass gasification furnace with external burner and biomass gasification method
  • Biomass gasification furnace with external burner and biomass gasification method
  • Biomass gasification furnace with external burner and biomass gasification method

Examples

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Embodiment 1

[0025] Such as figure 1 As shown, the external burner biomass gasification furnace includes a pyrolysis gasification device and a high temperature dust collector 17 . Wherein, the pyrolysis gasification device includes a cylindrical shell 1, the shell 1 is made of steel plate, the inner surface of the shell 1 is provided with a refractory material layer 2, and the top of the shell 1 is welded with a semicircle Shaped head 3. The upper section of the casing 1 is a gasification chamber 4 , the lower section of the casing 1 is a combustion chamber 8 , and the gasification chamber 4 and the combustion chamber 8 are connected by a throat 5 . An annular gasification agent pipe 6 is provided at the throat 5, and at least two gasification agent nozzles 7 are installed on the annular gasification agent pipe 6. The gasification agent nozzles 7 extend into the interior of the housing 1 and along the 6 is installed in the tangential direction of the inner circle, and an included angle o...

Embodiment 2

[0030] The difference from Embodiment 1 is that, as shown in FIG. 2( b ), four volutes 9 can be provided on the housing 1 , and four burners 10 can be provided correspondingly. In actual production, the number of burners 10 is determined according to the gas production requirement, and at least one volute 9 and burner 10 can be provided according to actual needs. Others are with embodiment 1.

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Abstract

The invention relates to the field of preparation of biomass energy sources, and particularly relates to a biomass gasifier with an external combustor and a biomass gasification method. The gasifier comprises a pyrolysis gasification device and a high-temperature dust remover, wherein the pyrolysis gasification device comprises a cylindrical shell; a combustion chamber is arranged at the lower section of the shell; a volute is arranged at the bottom of the combustion chamber; the combustor is correspondingly arranged at a notch of the volute. Heat required for biomass pyrolysis gasification is provided for the inside of the gasifier by using the external combustor; the pyrolysis gasification temperature inside the gasifier is accurately controlled by controlling the load of the combustor; the air coefficient of the combustor is controlled between 0.7 and 1; the residual air inside the gasifier is reduced; the nitrogen content in a combustible gas is reduced; the calorific value of the combustible gas is increased; the gas yield is increased; the production process conditions are stably controlled; the heat utilization rate is increased; the slagging carbon content is reduced; the biomass combustible gas with a high calorific value is prepared at a low cost.

Description

technical field [0001] The invention relates to the field of biomass energy production, in particular to a biomass gasification furnace with an external burner and a biomass gasification method. Background technique [0002] Biomass includes natural plants, manure, and urban and rural organic waste, and is a non-fossil renewable energy source. Compared with the energy utilization method of direct combustion of biomass, the utilization of biomass after pyrolysis and gasification has the advantages of expanding uses, reducing pollution, and being clean and efficient. However, my country's biomass pyrolysis and gasification technology is relatively backward. At present, the biomass pyrolysis and gasification treatment equipment mainly adopts fixed bed gasifier and normal pressure fluidized bed gasifier. A large amount of phenol water, high tar content, serious secondary pollution, small gas production per furnace, and low calorific value of the combustible gas produced have bee...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C10J3/48C10J3/46C10J3/84
CPCY02P20/10
Inventor 李轼
Owner 李轼