...
  • 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>Energy >Optimal design for double reheat coal-fired power plants with post-combustion CO_2 capture: A novel thermal system integration with a carbon capture turbine
【24h】

Optimal design for double reheat coal-fired power plants with post-combustion CO_2 capture: A novel thermal system integration with a carbon capture turbine

机译：燃烧后CO_2捕获双重再热燃煤发电厂的最佳设计：一种与碳捕获涡轮的新型热系统集成

获取原文
获取原文并翻译 | 示例
           
页面导航
  • 摘要
  • 著录项
  • 相似文献
  • 相关主题

摘要

The development of post-combustion capture is greatly restricted by its high energy consumption and the thermal efficiency penalty resulting from absorbent regeneration. This study provides novel insights into the design of a thermal system for double reheat coal-fired power plants integrated with full-scale post-combustion CO2 capture. To this end, this study proposed a modified thermal system integration scheme that included an extraction backpressure turbine called carbon capture turbine (CCT) to provide thermal energy for the regenerative heaters and CO2 capture system. A generalized thermal economy calculating framework and a thermal system parameter optimization model was also established to maximize the cycle thermal efficiency for the proposed scheme. A new unit was designed based on the modified scheme, and its parameters were determined by taking a 1000 MW double reheat coal-fired unit as a reference. These parameters were then optimized via dynamic adaptive particle swarm optimization. Compared with a conventional retrofitted unit, the coal consumption and CO2 emission rates of this newly designed unit were reduced by 0.01264 kg/(kW.h) and 0.00423 kg/(kW.h) after the parameter optimization, respectively. An exergy analysis for the proposed system shows that using CCT can efficiently prevent the extraction of steam superheat and the mismatch between the intermediate pressure cylinder exhaust and the reboiler from generating excessive exergy losses. (c) 2021 Elsevier Ltd. All rights reserved.
机译：后燃烧捕获的发展极大地受到吸收再生引起的高能耗和热效率惩罚的影响。本研究为与全级燃烧二氧化碳CO2捕获的全尺寸燃烧电厂集成的双重再热燃煤发电厂的热系统设计进行了新的洞察。为此，本研究提出了一种改进的热系统集成方案，其包括提取背压涡轮机被称为碳捕获涡轮机（CCT），为再生加热器和CO2捕获系统提供热能。还建立了一种广义热经济计算框架和热系统参数优化模型，以最大化所提出的方案的循环热效率。基于改性方案设计了一个新单元，通过将1000兆瓦的双重再热燃煤单元作为参考来确定其参数。然后通过动态自适应粒子群优化优化这些参数。与传统的改造单元相比，参数优化分别在参数优化后，该新设计单元的煤消耗和二氧化碳排放率分别减少0.01264千克/（kW.h）和0.00423kg /（kw.h）。所提出的系统的漏洞分析表明，使用CCT可以有效地防止蒸汽过热和中间压力缸排气和再沸器之间的不匹配产生过度的漏洞。 （c）2021 elestvier有限公司保留所有权利。

著录项

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱：kefu@zhangqiaokeyan.com

京公网安备：11010802029741号 ICP备案号：京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有

  • 客服微信

  • 服务号