公开(公告)号：US20140065560A1

公开(公告)日：2014-03-06

申请号：US14016578

申请日：2013-09-03

Applicant: ALSTOM Technology Ltd.

Inventor： Olaf STALLMANN ,  Frank Klaus Ennenbach ,  Christian Britz ,  Jutta Narjes ,  Markus Joerg Weitzel

IPC: F23L7/00 ,  F23D14/66 ,  F23J15/02

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 oxyfuel boiler in which an oxygen stream and a fuel stream are combusted to generate a stream of flue gas, an oxygen gas source producing the stream of oxygen for the boiler, and a gas processing unit for cleaning and compressing at least a portion of the stream of flue gas generated in the boiler for producing a stream of pressurized fluid comprising carbon dioxide. The method includes operating the boiler system, at least for a period of time, in an evaporation mode, in which a stream of oxygen from the oxygen gas source in liquid form is evaporated prior to being introduced in the boiler by transferring heat energy to the stream of liquid oxygen from a first stream of carbon dioxide of 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.

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燃烧以产生烟道气流，产生用于锅炉的氧气流的氧气源，以及 气体处理单元，用于清洁和压缩在锅炉中产生的烟道气流的至少一部分，以产生包含二氧化碳的加压流体流。 该方法包括在蒸发模式下至少运行一段时间的锅炉系统，其中来自液态的氧气源的氧气流在通过将热能传递到锅炉之前被蒸发而被蒸发 来自气体处理单元的第一二氧化碳流的液氧流。 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。