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High-efficiency clean low-carbon coal graded utilization method and device

A clean and efficient technology, which is applied in the gasification of granular/powdered fuels, the manufacture of combustible gases, and the petroleum industry. It can solve the problems of insufficient use of high value-added components of fuels, etc., and achieve the expansion of the applicable range of coal types and high purity. , the effect of easy purification

Active Publication Date: 2013-09-25
HUAZHONG UNIV OF SCI & TECH
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Problems solved by technology

However, the chemical chain oxygen decoupling combustion technology usually directly uses fossil fuels as fuel, and does not make full use of the high value-added components in the fuel.

Method used

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  • High-efficiency clean low-carbon coal graded utilization method and device
  • High-efficiency clean low-carbon coal graded utilization method and device

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example

[0058] In this example, water vapor is selected as the fluidization gas of pyrolysis furnace reactor 2, and water vapor is introduced from the inlet of pyrolysis furnace reactor 2; Carrier, after the whole system is running, adjust the amount of hot ash sent to the pyrolysis furnace reactor 2 and the temperature of the fluidization gas, and control the temperature in the pyrolysis furnace reactor 2 at about 500°C;

[0059] a) Pulverized coal particles are thermally decomposed in the pyrolysis furnace reactor 2, and volatile matter, water vapor, etc. are precipitated, and the gas products are brought into the first cyclone separator 3 by the fluidization gas together with some fly ash particles, and the separated solid particles pass through The two-way feeder 8 is sent into the pyrolysis furnace reactor 2 or the fuel reactor 10; at the same time, the remaining pyrolysis semi-coke in the pyrolysis furnace reactor 2 is directly sent into the fuel reactor 10 through the first flow...

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Abstract

The invention discloses a high-efficiency clean low-carbon coal graded utilization method and a device thereof. The invention aims at realizing coal graded conversion and high-efficiency clean utilization. With the method and the device, fuel (especially solid fuel and coal powder) high-efficiency utilization and high-concentration CO2 enrichment can be ensured; fuel comprehensive utilization value can be improved; poly-generation of electricity, gas, and tar can be realized; and the discharge of CO2 and other pollutants (such as NOx and SOx) can be reduced. According to the method provided by the invention, a coal crude product processing (coal pyrolysis) process and a coal combustion (chemical chain oxygen decoupling) process are coupled. The device mainly comprises a coal feeder, a pyrolyzer reactor, a cyclone separator, a primary cooler, a secondary cooler, a tar collector, a fuel reactor, a mobile sealing valve, an air reactor, a condenser, a coal dust collector, and an oxygen carrier collector. The device and the method are suitable for various solid fuels such as petroleum coke, biomass, municipal solid waste, and sludge, and different coal types.

Description

technical field [0001] The invention relates to the field of energy cleanliness and high-efficiency utilization, specifically a graded conversion of coal realized in a triple circulating fluidized bed, polygeneration of electricity, gas, and tar, near-zero emission of pollutants, and low-cost CO 2 Capture methods and devices. Background technique [0002] As a fossil fuel with abundant reserves and low price, coal occupies an extremely important position in the chemical industry and power industry. Especially in my country, coal resources are relatively abundant, accounting for a large proportion in the energy structure. But coal is usually burned directly to generate electricity. The components with high industrial added value and low calorific value in coal are directly burned, which greatly reduces the actual utilization value of coal; at the same time, direct combustion of coal for power generation produces a large amount of CO 2 , exacerbated the greenhouse effect an...

Claims

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Application Information

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IPC IPC(8): C10J3/60C10J3/56C10J3/54C10J3/64C10J3/62C10J3/84C10J3/72
Inventor 赵海波张永亮马琎晨郑楚光
Owner HUAZHONG UNIV OF SCI & TECH
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