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Family-size updraught tar-free biomass gasification direct burn type furnace

A direct-fired furnace, tar-free technology, applied in household furnaces/stoves, gaseous heating fuel, applications, etc., can solve problems such as increased operating costs, cumbersome and complicated operation processes, and cannot fundamentally solve the problem of tar, so as to improve gas The effects of temperature, structure improvement, and good gasification effect

Active Publication Date: 2010-08-25
湖南哈工机器人研究院有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

These methods not only make the operation process cumbersome and complicated, but also increase the operating cost, and cannot fundamentally solve the tar problem

Method used

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  • Family-size updraught tar-free biomass gasification direct burn type furnace
  • Family-size updraught tar-free biomass gasification direct burn type furnace
  • Family-size updraught tar-free biomass gasification direct burn type furnace

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Experimental program
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specific Embodiment approach 1

[0007] Specific embodiment 1: In conjunction with Fig. 1, Fig. 3 and Fig. 4, the household updraft-type tar-free biomass gasification direct combustion furnace of this embodiment includes ash cleaning door 1, air pipe 2, furnace body, and refractory layer 8 , insulation layer 9, annular water tank 15, spiral partition 11 and ash hopper 13; body of furnace is made of inner furnace drum 20 and outer furnace drum 3, and the cavity between inner furnace drum 20 and outer furnace drum 3 is from inside to A refractory layer 8 and an insulating layer 9 are arranged in sequence on the outside, the upper end faces of the refractory layer 8, the insulating layer 9 and the furnace body are flush, the lower end faces of the refractory layer 8 and the inner furnace barrel 20 are flush, and the annular water tank 15 is set On the upper end face of the furnace body, the lower end face of the refractory layer 8 is located above the lower end face of the insulation layer 9, and the inner cavity...

specific Embodiment approach 2

[0008] Specific Embodiment 2: In conjunction with FIG. 1 and FIG. 4 , the cross section of the gas stove 6 in this embodiment is circular, and a plurality of secondary air inlet holes 4 are evenly distributed along the circumferential direction of the side wall of the gas stove 6 . With such arrangement, the secondary air through the secondary air inlet hole 4 is evenly sent to the bottom of the gas stove 6 to mix with the gas. Others are the same as the first embodiment.

specific Embodiment approach 3

[0009] Specific Embodiment 3: Referring to FIG. 4 , a plurality of gas outlet holes 5 in this embodiment are evenly distributed along the circumferential direction of the bottom end surface of the gas stove 6 . Such setting can play a role in stabilizing combustion. Others are the same as the second embodiment.

[0010] Embodiment 4: In conjunction with Fig. 3 and Fig. 5, the difference between this embodiment and Embodiment 1 is that a layer of combustion-stabilizing layer 18 is fixed inside the gas stove 6 of this embodiment, and the combustion-stabilizing layer 18 adopts heat-resistant Woven from silk. Such setting has the effect of stable combustion and burnout.

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Abstract

The invention discloses a family-size updraught tar-free biomass gasification direct burn type furnace which relates to a family-size updraught biomass direct burn type furnace for thoroughly solving the problem that a biomass gasification furnace generates tar. The lower end of a gas stove is arranged in an annular water tank; the lateral wall of the gas stove is provided with a plurality of secondary air inlet holes along the circumferential direction; the bottom end face of the gas stove is provided with a plurality of gas outlet holes; a hearth is communicated with the plurality of gas outlet holes through a central hole of the annular water tank; an air preheating chamber is arranged between a flame retardant coating and an inner furnace cylinder and is formed into a spiral air preheating chamber through a spiral clapboard arranged therein, and the lower end of the spiral air preheating chamber is a preheating air outlet; the upper edge of an ash hopper tightly clings to the inner wall at the lower end of the inner furnace cylinder, and the lower end of the ash hopper is arranged in an ash chamber. Air participates in gasification after heated by the spiral air preheating chamber, and the generated gas directly burns through the gas stove for cooking without a gas output process, and tar in the gas is directly burnt, thereby solving the problem of tar treatment.

Description

technical field [0001] The invention relates to a household updraft biomass direct combustion furnace, in particular to a gasification furnace which utilizes biomass to be converted into combustible gas through oxygen-limited combustion pyrolysis reaction. Background technique [0002] my country is a large agricultural country with abundant biomass resources. The traditional treatment methods are cooking, field burning and open-air stacking, etc., which not only has low utilization rate of biomass resources, but also seriously pollutes the environment. If the biomass is heated, decomposed and gasified, and converted into gas fuel for production or residential gas, the utilization efficiency can be greatly improved. In the existing updraft biomass gasifiers, air is basically directly fed into the furnace for gasification and combustion, and the gasification efficiency is low. Especially the high tar content in the gas, the tar will condense in the pipeline as the temperatur...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F24C3/00C10J3/82C10J3/76
CPCY02P20/129
Inventor 别如山董凯王庆功刘学忠
Owner 湖南哈工机器人研究院有限公司
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