Pulse downdraft type high-temperature fixed bed gasification furnace

Abstract

The invention relates to a pulse downdraft type high-temperature fixed bed gasification furnace, and belongs to the field of thermal power engineering. Pulse gas inlet channels, high-temperature steam inlet channels and a product gas outlet channel are formed in a gasification furnace body; the high-temperature steam inlet channels are symmetrically formed in the throat part of the gasification furnace body; the pulse gas inlet channels are formed above the high-temperature steam inlet channels; the product gas outlet channel is formed in the lower part of the gasification furnace body. According to the high-temperature fixed bed gasification furnace, high-heat-value solid fuels such as biomass, urban wastes and medical wastes can be gasified, the gasification efficiency, the gasification intensity and the fuel gas quality are high, the wastes can be harmlessly treated, reduced and recycled, the environmental protection effect is remarkable, the economic benefit is huge, and the market prospect is wide.

Description

technical field

[0001] The invention relates to a pulse downdraft fixed-bed high-temperature gasification furnace, which belongs to the field of thermal energy engineering. Background technique

[0002] At present, the effective use of solid waste such as biomass, municipal solid waste, and medical waste can alleviate environmental problems and energy problems. Pyrolysis and gasification technology has great advantages in the recycling of solid waste, especially in high-calorific value solid waste (including municipal solid waste and medical waste), which has the advantages of resource utilization, reduction and harmlessness. The throat of the downdraft gasifier prolongs the residence time of the gas phase, so that the tar is cracked in the high temperature area, and the tar content in the generated gas is relatively small. At the same time, the moisture in the material participates in the reaction, so that the H in the product gas 2 The content increases, but the fluidity ...

Examples

Embodiment Construction

[0022] The gasification furnace and the gasification process will be further described below in conjunction with the accompanying drawings.

[0023] Pulse downdraft fixed bed high temperature gasifier, such as figure 1 , figure 2 and image 3 As shown, it includes from top to bottom: feeding device 1, butterfly valve 1-1, hopper 1-2, butterfly valve 1-3; upper gasifier body 2, refractory brick insulation layer 2-1, high-heat steel liner 2-2, the connecting flange 2-3 of the upper and lower parts of the furnace body; the lower part of the gasifier body 3, the pulse gas inlet channel 3-1, the high-temperature steam inlet channel 3-2, the product gas outlet channel 3-3, Refractory brick insulation layer 3-4; silicon carbide rod heating device 4; temperature monitoring and gas sampling point 5; high temperature steam preparation device 6, silicon carbon rod 6-1, low temperature steam inlet 6-2, spiral pipe 6-3, high temperature Steam outlet 6-4; liftable grate 7, grate 7-1, li...

technical field

[0001] The invention relates to a pulse downdraft fixed-bed high-temperature gasification furnace, which belongs to the field of thermal energy engineering. Background technique

[0002] At present, the effective use of solid waste such as biomass, municipal solid waste, and medical waste can alleviate environmental problems and energy problems. Pyrolysis and gasification technology has great advantages in the recycling of solid waste, especially in high-calorific value solid waste (including municipal solid waste and medical waste), which has the advantages of resource utilization, reduction and harmlessness. The throat of the downdraft gasifier prolongs the residence time of the gas phase, so that the tar is cracked in the high temperature area, and the tar content in the generated gas is relatively small. At the same time, the moisture in the material participates in the reaction, so that the H in the product gas 2 The content increases, but the fluidity ...

Examples

Embodiment Construction

[0022] The gasification furnace and the gasification process will be further described below in conjunction with the accompanying drawings.

[0023] Pulse downdraft fixed bed high temperature gasifier, such as figure 1 , figure 2 and image 3 As shown, it includes from top to bottom: feeding device 1, butterfly valve 1-1, hopper 1-2, butterfly valve 1-3; upper gasifier body 2, refractory brick insulation layer 2-1, high-heat steel liner 2-2, the connecting flange 2-3 of the upper and lower parts of the furnace body; the lower part of the gasifier body 3, the pulse gas inlet channel 3-1, the high-temperature steam inlet channel 3-2, the product gas outlet channel 3-3, Refractory brick insulation layer 3-4; silicon carbide rod heating device 4; temperature monitoring and gas sampling point 5; high temperature steam preparation device 6, silicon carbon rod 6-1, low temperature steam inlet 6-2, spiral pipe 6-3, high temperature Steam outlet 6-4; liftable grate 7, grate 7-1, li...

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