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Technology of utilizing waste heat of steel slag to recycle biomass and produce high-quality fuel gas

A technology of fuel gas and biomass, which is applied in the production of bulk chemicals, the manufacture of combustible gas, and energy input. It can solve the problems of poor tar quality and insufficient and effective use of steel slag heat, so as to reduce the amount of carbon on the surface and avoid secondary pollution. Sub-heat pollution, the effect of improving the quality of fuel products

Active Publication Date: 2018-04-13
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 of utilizing waste heat of steel slag to recycle biomass and produce high-quality fuel gas
  • Technology of utilizing waste heat of steel slag to recycle biomass and produce high-quality fuel gas

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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 is a novel method for utilizing liquid steel slag to crack biomass and produce high-quality fuel gas. Through process control, the liquid steel slag can be effectively cooled and its heat energy can be effectively used, while biomass can be converted into high-quality energy gas. The technical scheme of this process is: heating liquid steel slag and gasifying biomass and cooling water, under the catalysis of steel slag, biomass cracking gas and water vapor undergo a catalytic reaction, tar gradually generates CO and H2-based energy gas, and at the same time Cl and CO2 in the energy gas are absorbed by the alkaline substances in the steel slag. This process greatly saves energy while cooling steel slag, and obtains high-grade energy gas at the same time.

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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Patent Type & Authority Patents(China)
IPC IPC(8): C10J3/00
CPCY02P20/129Y02P20/52
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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