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Treatment system and method for a flue gas from a combustion proces

A combustion process and flue gas technology, applied in the field of flue gas systems, can solve a large number of problems

Inactive Publication Date: 2015-01-14
GENERAL ELECTRIC TECH GMBH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] Such systems require large amounts of water and additionally generate large amounts of acid water at the wet scrubber

Method used

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  • Treatment system and method for a flue gas from a combustion proces
  • Treatment system and method for a flue gas from a combustion proces

Examples

Experimental program
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Embodiment Construction

[0012] figure 1 One embodiment of a system for flue gas treatment is shown.

[0013] Reference sign 1 denotes a boiler, such as preferably an oxy-fired boiler (ie a boiler supplied with oxygen and usually recirculated flue gas); and a fuel, such as coal, oil or gas. Boiler 1 also produces flue gas, which is directed to flue gas treatment system 2 .

[0014] The flue gas treatment system 2 may have different components and these components may be arranged differently from each other, but generally the system 2 includes filters or electrostatic precipitators for dust removal, SO 2 A scrubber, a flow splitter connected to a recirculation line for supplying a part of the flue gas back to the boiler 1 (this recirculation gas is mixed with oxygen) and / or other components. These components are generally identified by reference numeral 3 .

[0015] The system also includes a condenser 4 for liquid removal. The condenser 4 may be of the type in which liquid falls from the top and g...

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Abstract

The treatment system for a flue gas from a combustion process comprises a condenser (4), a compressor (5) for compressing the flue gas deprived of moisture at the condenser (4), a NO 2 scrubber column (6) supplied with the compressed flue gas from the compressor (5), a liquid supply line (7) for supplying liquid condensed at the condenser (4) to the NO 2 scrubber column (6), a liquid recirculation line (8) for recirculating liquid from the NO 2 scrubber column (6) to the condenser (4).

Description

technical field [0001] The present invention relates to systems and methods for treating flue gases from combustion processes. [0002] The combustion process takes place, for example, in boilers of power stations, preferably oxy-fired boilers (ie boilers supplied with oxygen instead of air). Background technique [0003] EP 2 365 866 discloses the treatment of flue gas to remove NO x and SO 2 A system comprising a compressor and a wet scrubber in which the flue gas is transported countercurrently to the scrubbing medium. In addition, between the compressor and the wet scrubber, an alkaline additive is supplied to limit the acidity of the water coming from the wet scrubber and thus protect the plant. [0004] WO 2011 / 140 054 discloses a system for treating flue gas comprising a condenser for removing water from the flue gas, a compressor and a x Wet scrubber tower removed. In addition, the water collected at the condenser, which is waste water, is supplied from the cond...

Claims

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Application Information

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IPC IPC(8): F23J15/00
CPCB01D2257/404B01D2257/504B01D53/56B01D2257/30B01D2257/80B01D2258/0283B01D53/14B01D53/78B01D53/265Y02E20/32
Inventor L.尼尔斯森J.P-O.格鲁布斯特雷姆
Owner GENERAL ELECTRIC TECH GMBH
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