Integrated system and method for multi-particle-size grading, pyrolyzing and gasifying for raw coal
A technology of pyrolysis gasification and multi-particle size, which is applied in the field of coal chemical industry, can solve the problem of coal pyrolysis of a single set of coal with a single coal particle size, and achieve the effects of reducing production costs, strong practicability, and reducing wastewater discharge
Active Publication Date: 2014-12-10
SHAANXI COAL & CHEM TECH INST
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[0004] The purpose of the present invention is to provide a raw coal multi-particle size graded pyrolysis gasification integrated system and method suitable for multi-particle size coal types, which solves the problem that a single set of coal pyrolysis system can only process single coal particle size coal types
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[0024] The present invention is described in detail below in conjunction with accompanying drawing:
[0025] refer to figure 1 , the present invention includes a coal washing and screening device 1, a pulverized coal pyrolysis furnace 2, a granular coal pyrolysis furnace 3, a lump coal pyrolysis furnace 4, a powder coke gasification furnace 5, a gas washing and purification device 6, a first gas-solid A separation device 7 , a second gas-solid separation device 8 , a third gas-solid separation device 9 , a gas cooler 10 and an oil-water separator 11 .
[0026] Coal washing and screening device 1 outputs coal of 3 different particle sizes, which are divided into 3 routes and pass through the conveying pipeline respectively to the raw coal inlets of pulverized coal pyrolysis furnace 2, granular coal pyrolysis furnace 3 and lump coal pyrolysis furnace 4 connected.
[0027] The gas outlet at the top of the pulverized coal pyrolysis furnace 2 is connected with the inlet of the fi...
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The invention provides an integrated system and method for multi-particle-size grading, pyrolyzing and gasifying for raw coal. The integrated system comprises a coal washing-screening device, wherein the outlet of the coal washing-screening device is connected with a pulverized coal pyrolyzing furnace, a pea coal pyrolyzing furnace and a lump coal pyrolyzing furnace respectively; and the gas outlets of the pulverized coal pyrolyzing furnace, the pea coal pyrolyzing furnace and the lump coal pyrolyzing furnace are connected with a first gas-solid separation device, a second gas-solid separation device and a third gas-solid separation device respectively. The integrated system can be used for treating pulverized coal, pea coal and lump coal simultaneously, thus solving the problem that coal with different particle sizes can be utilized only via different systems at present, and reducing the production cost; simultaneously, the pulverized coal pyrolyzing furnace, the pea coal pyrolyzing furnace and the lump coal pyrolyzing furnace can be selectively opened or closed aiming at raw coal with different particle sizes during raw coal treatment, and the treatment can be performed aiming at raw coal with a single particle size, thus being flexible and convenient to use, and strong in practicability.
Description
technical field [0001] The invention belongs to the field of coal chemical industry, and in particular relates to an integrated system and method for raw coal multi-particle size graded pyrolysis and gasification. Background technique [0002] my country's fossil energy endowment conditions rich in coal, poor in oil, and low in gas and the historical process of breakthroughs in renewable energy technology determine that my country's energy consumption structure must be dominated by coal. The current dependence on energy and organic raw materials, as well as the pressure on energy security and carbon emission reduction, all require us to make breakthroughs as soon as possible in the concept and process technology of comprehensive and efficient coal conversion and utilization. Among them, coal pyrolysis is a coal utilization method with certain competitiveness. [0003] Coal can be divided into pulverized coal (<6mm), granular coal (6-20mm) and lump coal (>20mm) accordi...
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IPC IPC(8): C10J3/00C10J3/82C10B53/00C10B53/04C10B53/08
Inventor 苗青张志刚樊英杰冉伟利陈静升尚建选闵小建郑化安
Owner SHAANXI COAL & CHEM TECH INST