公开(公告)号：US20140116304A1

公开(公告)日：2014-05-01

申请号：US14067434

申请日：2013-10-30

Applicant: ALSTOM Technology Ltd

Inventor： Markus Joerg WEITZEL

IPC: F23J15/02 ,  F25J3/04 ,  F23N1/02

CPC classification number: F23J15/02 ,  F23D14/66 ,  F23J15/006 ,  F23J15/06 ,  F23J2900/15061 ,  F23L7/007 ,  F23L15/04 ,  F23L2900/07006 ,  F23N1/02 ,  F25J3/04278 ,  F25J3/04527 ,  F25J3/04533 ,  F25J3/04612 ,  F25J3/04836 ,  F25J2250/50 ,  F25J2260/80 ,  F25J2270/12 ,  F25J2270/80 ,  Y02E20/344 ,  Y02E20/348

Abstract: The present disclosure relates to a method of operating a boiler system that includes an oxy-fuel boiler in which an oxygen stream and a fuel stream are combusted to generate a flue gas stream. An air separation unit produces the oxygen stream for the oxy-fuel boiler. A gas processing unit cleans and compresses at least a portion of the flue gas stream generated in the oxy-fuel boiler producing a pressurized carbon dioxide stream. The method includes operating the boiler system, at least for a period of time, in a recirculation mode, during which a carbon dioxide stream from a CO2 compression unit within the gas processing unit is evaporated in the air separation unit and forwarded as a stream to the gas processing unit. The present disclosure further relates to a boiler system for an oxy-fuel process as well as to a power plant comprising such a system. The present disclosure also relates to the use of a carbon dioxide containing stream as a refrigerant.

Abstract translation: 本公开涉及一种操作锅炉系统的方法，其包括氧燃料锅炉，其中氧气流和燃料流被燃烧以产生烟道气流。 空气分离单元产生用于氧 - 燃料锅炉的氧气流。 气体处理单元清洁并压缩在氧 - 燃料锅炉中产生的烟气流的至少一部分，产生加压的二氧化碳流。 该方法包括在再循环模式下操作锅炉系统至少一段时间，在该循环模式期间，来自气体处理单元内的CO 2压缩单元的二氧化碳流在空气分离单元中蒸发并作为流转发 气体处理单元。 本公开还涉及用于氧 - 燃料工艺的锅炉系统以及包括这种系统的发电厂。 本公开还涉及使用含二氧化碳的料流作为制冷剂。

公开(公告)号：US20130298599A1

公开(公告)日：2013-11-14

申请号：US13940496

申请日：2013-07-12

Applicant: ALSTOM Technology Ltd

Inventor： Olaf STALLMANN ,  Markus Joerg WEITZEL

IPC: F25J3/08

CPC classification number: F25J3/08 ,  B01D53/002 ,  B01D53/0462 ,  B01D53/047 ,  B01D53/261 ,  B01D2256/22 ,  B01D2257/102 ,  B01D2257/104 ,  B01D2257/302 ,  B01D2257/602 ,  B01D2259/40054 ,  B01D2259/40081 ,  B01D2259/4009 ,  B01D2259/402 ,  F23J15/06 ,  F23J2219/60 ,  F23J2219/70 ,  F23L7/007 ,  Y02E20/344 ,  Y02E20/363

Abstract: A method for drying a wet CO2 rich gas stream from an oxy-combustion process that includes: compressing the wet CO2 rich gas stream to a drying process operating pressure, cooling the wet CO2 rich gas stream in at least one cooler, alternately drying the wet CO2 rich gas stream in at least one dryer which contains at least one desiccant bed and regenerating the desiccant bed by conducting a heated regenerating gas through the dryer in opposite direction to the flow direction of the wet CO2 rich gas stream, separating the dried CO2 rich gas stream in a purification process to a purified CO2 gas stream and a waste gas stream rich in nitrogen and oxygen, whereby the waste gas stream rich in nitrogen and oxygen is used as regenerating gas, and subsequently to the regeneration the dryer is purged at least once by a pressurized CO2 rich gas stream conducted from the compressor, and whereby the dryer is charged up to the drying process operating pressure with a pressurized CO2 rich gas stream conducted from the compressor before each drying process.

Abstract translation: 一种用于从氧气燃烧过程中干燥富含二氧化碳的气流的方法，包括：将所述富CO 2气流压缩至干燥过程的操作压力，在至少一个冷却器中冷却所述富CO 2气流，交替地干燥所述湿 在至少一个干燥器中含有二氧化碳的气流，该干燥剂含有至少一个干燥剂床，并且通过将热的再生气体通过与干燥的富CO 2气流的流动方向相反的方向通过干燥器再生干燥剂床， 净化过程中的气流进入纯化的CO 2气体流和富含氮和氧的废气流，由此将富含氮和氧的废气流用作再生气体，随后再生该干燥器至少被清除 一次通过从压缩机传导的加压的富含CO 2的气流，并且由此将干燥器用加压的富CO 2气流充入干燥过程的操作压力 在每个干燥过程之前从压缩机传导。