System and method for integrating smoke purification and lignite quality-improvement
A flue gas purification and composite system technology, applied in the field of composite systems, can solve the problems of low utilization efficiency of lignite and ineffective use of flue gas heat, and achieve the effects of improving combustion efficiency, increasing efficiency and saving energy.
Inactive Publication Date: 2013-01-23
邹炎 +1
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Problems solved by technology
[0003] The purpose of the invention of this application is to solve the problem that the heat of the flue gas discharged from the boiler is not effectively utilized and the utilization efficiency of lignite is low, and to provide a system and method for flue gas purification and lignite upgrading
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[0016] Such as figure 1 As shown, a composite system for flue gas purification and lignite upgrading includes: lignite upgrading device 1, cyclone separator 2, desulfurization device 3, first induced draft fan 4, dust collector 5, chimney 6, denitrification device 7, boiler 8. Electric dust removal device 9, second induced draft fan 10, third induced draft fan 11, and fourth induced draft fan 14. The flue gas outlet of boiler 8 is connected with denitrification device 7, fourth induced draft fan 14, electric dust removal device 9, and third induced draft fan in sequence. The induced draft fan 11 is connected with the flue gas inlet of the lignite upgrading device 1, the solid phase outlet 12 of the lignite upgrading device 1 is connected with the lignite inlet of the boiler 8, and the gas phase outlet 13 of the lignite upgrading device 1 is connected with the cyclone separator 2, the first The induced draft fan 4, the dust collector 5, the second induced draft fan 10, the desu...
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The invention discloses a system and method for integrating smoke purification and lignite quality-improvement. The system comprises a lignite quality-improvement device, a cyclone separator, a desulfurizer, a first draught fan, a dust remover, a chimney, a denitration device, a boiler, an electric dust removing device, a second draught fan, a third draught fan and a fourth draught fan, wherein asmoke outlet of the boiler is sequentially connected with smoke inlets of the denitration device, the fourth draught fan, the electric dust removing device, the third draught fan and the lignite quality-improvement device; a solid phase outlet of the lignite quality-improvement device is connected with a lignite inlet of the boiler; and a gas phase outlet of the lignite quality-improvement deviceis sequentially connected with the cyclone separator, the first draught fan, the dust remover, the second draught fan, the desulfurizer and the chimney. Lignite is dried by using residual heat of thedischarged smoke of the boiler, thus heat value of the system is remarkably improved, a porous structure and a rich surface functional group of the lignite are sufficiently utilized for purifying smoke, combustion efficiency of the lignite is improved, equipment investment is reduced, energy resources are saved and pollution emission is reduced.
Description
technical field [0001] The invention relates to a compound system and method for flue gas purification and lignite upgrading, in particular to a compound system and method for combining flue gas purification and lignite upgrading. Background technique [0002] At present, the exhaust gas discharged from the boiler is usually discharged into the atmosphere after purification. And the residual heat carried in the flue gas is also wasted. At the same time, lignite has a water content as high as 35-40%, but its calorific value is usually only 2500-3500kc / kg, so the combustion efficiency is low, the investment in main and auxiliary equipment is large, and the integrated purification of flue gas desulfurization, denitrification and mercury removal has a large investment and high cost. Contents of the invention [0003] The purpose of the invention of this application is to solve the problem that the heat of flue gas discharged from the boiler is not effectively utilized and the...
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IPC IPC(8): F23J15/02F26B21/14F23K3/00
Inventor 邹炎
Owner 邹炎