Technology of utilizing blast furnace slag waste heat to reclaim biomass and produce high quality fuel gas

A blast furnace slag and biomass technology, which is applied in the fields of environmental protection and low carbon, can solve the problems such as insufficient and effective utilization of blast furnace slag thermal energy and poor tar quality, avoid secondary thermal pollution, reduce carbon content on surface area, and improve fuel efficiency. The effect of product quality

Active Publication Date: 2016-05-04
SHANXI WENLONG COAL MINE ENG DESIGN
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Problems solved by technology

The patent application number 2013101072144 introduces a technology of using blast furnace 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 blast furnace slag, and the quality of tar produced at the same time is poor

Method used

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  • Technology of utilizing blast furnace slag waste heat to reclaim biomass and produce high quality fuel gas
  • Technology of utilizing blast furnace slag waste heat to reclaim biomass and produce high quality fuel gas

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example 2

[0025] (1) Liquid blast furnace 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 is mixed with biomass and part of high-temperature fuel gas , and pyrolyze the biomass, 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 blast furnace slag enters the second-stage rotary kiln through the screw feeder, at the end of the second-stage rotary kiln Discharge after being cooled by cooling water;

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

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Abstract

The invention discloses a novel method of utilizing liquid blast furnace slag waste heat to crack biomass and produce high quality fuel gas. Through technological control, the liquid blast furnace slag can be effectively cooled, and the heat energy of the slag is effectively utilized, and meanwhile the biomass can be transformed into the high quality energy gas. The technical scheme of the technology is as follows: the liquid blast furnace slag is heated, and the biomass and cooling water are gasified; under catalysis of the blast furnace slag, the biomass cracked gas and the vapor are subjected to catalytic reaction; the tar is gradually catalyzed to generate the energy gas mainly containing CO and H2; and meanwhile, Cl and CO2 in the energy gas is absorbed by alkali substance in the blast furnace slag. The technology greatly saves the energy source while cooling the blast furnace slag, and also produces the high quality energy gas.

Description

technical field [0001] The present invention is a method for recycling biomass and cooling blast furnace slag, which greatly saves energy while cooling blast furnace 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 ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C10J3/00C10J3/72C10J3/82
CPCC10J3/00C10J3/72C10J3/82C10J2300/12C10J2300/1603C10J2300/18Y02P20/10Y02P20/129
Inventor 张大磊李公伟郝志鹏
Owner SHANXI WENLONG COAL MINE ENG DESIGN
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