IGCC (Integrated Gasification Combined Cycle) poly-generation device and method based on pyrolysis and gasification of low metamorphic powdered coal

A low-deterioration pulverized coal, pyrolysis gasification technology, applied in the direction of gas turbine equipment, granular/powdered fuel gasification, combustible gas purification, etc., can solve the problems of high investment costs, economic competition, and inflexible operation, and achieve consumption The effect of small water volume, high thermal energy efficiency and simplified process flow

Inactive Publication Date: 2013-04-03
陕西华祥能源科技集团有限公司
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However, IGCC has high investment costs, cannot compete with conventional coal-fired power plants economi

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  • IGCC (Integrated Gasification Combined Cycle) poly-generation device and method based on pyrolysis and gasification of low metamorphic powdered coal

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Embodiment Construction

[0023] The present invention will be described in further detail below in conjunction with the accompanying drawings.

[0024] see figure 1 , the device of the present invention includes a pyrolysis / gasification system, a gas purification system, a circulating fluidized bed boiler, a gas turbine / steam turbine system;

[0025] The pyrolysis / gasification system includes a tumble dryer 1, a moving bed pyrolysis furnace 2, and a fluidized bed gasification furnace 3 connected in sequence;

[0026] The gas purification system comprises a cyclone dust collector 5, a high-temperature depth dust collector 6, a quenching tower 7 and a desulfurization tower 8 connected in sequence, wherein the cyclone dust collector 5 communicates with the moving bed pyrolysis furnace 2;

[0027] The inlet of the circulating fluidized bed boiler 4 is connected with the fluidized bed gasifier 3, and the flue gas outlet of the circulating fluidized bed boiler is connected with the tumble dryer 1 through a...

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Abstract

The invention discloses an IGCC (Integrated Gasification Combined Cycle) poly-generation device and method based on pyrolysis and gasification of low metamorphic powdered coal. The device comprises a pyrolysis/gasification system, a coal gas purifying system, a circulating fluidized bed boiler and a gas turbine/steam turbine system. The method comprises the steps as follows: carrying out low temperature pyrolysis and partial air gasification on the low metamorphic powdered coal, grading and converting into coal gas, tar and semi-coke, and carrying out the IGCC poly-generation process by the semi-coke and the coal gas with high calorific value. According to the device and the method, the tar, sulphur and other chemical products can be produced while clean power is generated, the products obtained by grading and converting the low metamorphic powdered coal are fully utilized, the material conversion and energy conversion functions are integrated, the resource utilization rate is high, and the heat energy efficiency is high. The device and method are suitable for the low metamorphic powdered coal such as peat, brown coal, jet coal, non-sticking coal and the like, and the particle size of raw materials is 0-8 mm. The high-temperature coal gas generated in a fluidized bed gasification furnace contains a large amount of hydrogen, so that the powdered coal can be subjected to hydropyrolysis, and the tar recovery rate can reach more than 12%.

Description

technical field [0001] The invention relates to an IGCC polygeneration process device and method, in particular to an IGCC polygeneration device and method based on pyrolysis and gasification of low-modified pulverized coal. Background technique [0002] Compared with the traditional coal-fired power generation device, the integrated gasification combined cycle power generation system (IGCC) has the advantages of low unit heat consumption, low water consumption, less land occupation, low emissions of sulfur, nitrogen oxides and particulate matter, and the by-products of coal gasification can be realized The comprehensive utilization of coal chemical industry and other advantages can better solve a series of major problems in the energy field, such as energy supply and demand and consumption structure, ecological environment protection and high efficiency, low-consumption power stations, etc., and will become a competitive power generation method in my country. However, IGCC h...

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Application Information

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IPC IPC(8): C10J3/60C10J3/54C10J3/56C10J3/62C10J3/66C10J3/84C10B53/04C10B57/00C10B57/10C10K1/02C10K1/04C10K1/00F01D15/10F02C6/00
CPCY02E20/18Y02P20/10Y02P20/129
Inventor 毛少祥毕可军柏林红孔北方
Owner 陕西华祥能源科技集团有限公司
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