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Technology for recycling biomass and producing high-quality fuel gas by afterheat of slag

A biomass and fuel gas technology, used in the production of bulk chemicals, the manufacture of combustible gases, and gasification processes, etc., can solve the problems of insufficient and effective use of steel slag thermal energy, poor tar quality, etc., to avoid secondary thermal pollution, The effect of reducing the amount of carbon on the surface area and improving the quality of fuel products

Active Publication Date: 2016-05-25
天津亿诚集团有限公司
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Problems solved by technology

The patent application number 2013101072144 introduces a technology of using steel slag to crack biomass to produce tar. This method uses waste to treat waste, but this method does not fully and effectively utilize the heat energy of steel slag, and the quality of tar produced at the same time is poor

Method used

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  • Technology for recycling biomass and producing high-quality fuel gas by afterheat of slag
  • Technology for recycling biomass and producing high-quality fuel gas by afterheat of slag

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example 2

[0025] (1) Liquid steel slag at a temperature of 1500-1700°C is poured from the slag tank to the inlet of the granulator. After heat exchange and granulation, it enters the inlet of the first-stage rotary kiln from the outlet and mixes with biomass and some high-temperature fuel gas. And the biomass is pyrolyzed, and then the mixture is sent to the end of the first-stage rotary kiln, the gas phase part is discharged from the upper port of the end, and the solid-phase steel slag enters the second-stage rotary kiln through the screw feeder, and is cooled at the end of the second-stage rotary kiln Discharge after water cooling;

[0026] (2) The cooling water in step (1) is added from the outlet of the secondary rotary kiln, sprayed onto the surface of the steel slag, heated and converted into water vapor; the water vapor then flows in the opposite direction with the steel slag and exchanges heat, and is transported to the inlet of the secondary rotary kiln It is discharged from t...

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Abstract

The invention relates to a technology for recycling biomass and producing high-quality fuel gas by afterheat of slag. Under process control, liquid-state slag can be cooled effectively and heat thereof can be utilized effectively while biomass can be converted into high-quality fuel gas. The technical scheme includes that the liquid-state slag is heated and the biomass and cooling water are gasified; the biomass pyrolysis gas and vapor are in catalytic reaction under catalytic action of the slag, tar generates energy gas including CO and H2 primarily, and Cl and CO2 of the energy gas are absorbed by alkaline substance of the slag. According to the technology, the slag is cooled with high-quality fuel gas obtained on the premise of great energy saving.

Description

technical field [0001] The present invention is a method for recycling biomass and cooling steel slag, which greatly saves energy while cooling steel slag and recycling biomass to obtain high-grade energy gas. It belongs to the field of environmental protection and low-carbon technology. Background technique [0002] Our country produces a large amount of biomass every year, and most of the biomass is not used effectively, but is burned in the field, forming smog, which seriously affects the atmospheric environment. Biomass pyrolysis utilization is a biomass utilization method, but its product tar is usually difficult to utilize, and there is also the problem of equipment coking. The patent application number 2014102110190 introduces a method of producing fuel gas by catalytic reforming and cracking of sludge and biomass. This method converts biomass tar into combustible gas. Although relatively easy-to-use fuel gas is produced, the Its CO2 content is high and the quality ...

Claims

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Application Information

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IPC IPC(8): C10J3/00
CPCY02P20/129Y02P20/52C10J3/00C10J2300/12C10J2300/1603C10J2300/18
Inventor 张大磊李公伟郝志鹏
Owner 天津亿诚集团有限公司
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