Study on peak regulation capacity of a coal-fired supercritical carbon dioxide cogeneration unit

WU Zuolian; ZHANG Yifan; ZHANG Chun; LI Hongzhi; LIANG Faguang

doi:10.19666/j.rlfd.201802067

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Study on peak regulation capacity of a coal-fired supercritical carbon dioxide cogeneration unit

Thermal Power Generation Vol. 47, Issue 6, Pages: 29-34(2018)

更新时间：2025-09-28

- Study on peak regulation capacity of a coal-fired supercritical carbon dioxide cogeneration unit
- 作者机构：
  
  1. 山东农业大学水力土木工程学院
  2. 西安热工研究院有限公司
- 作者简介：
- 基金信息：
- DOI：10.19666/j.rlfd.201802067
  CLC： TK122
- Published Online：06 June 2018，
  
  Published：2018
- 稿件说明：
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WU Zuolian, ZHANG Yifan, ZHANG Chun, et al. Study on peak regulation capacity of a coal-fired supercritical carbon dioxide cogeneration unit[J]. Thermal Power Generation, 2018, 47(6): 29-34.
DOI：

WU Zuolian, ZHANG Yifan, ZHANG Chun, et al. Study on peak regulation capacity of a coal-fired supercritical carbon dioxide cogeneration unit[J]. Thermal Power Generation, 2018, 47(6): 29-34. DOI： 10.19666/j.rlfd.201802067.

摘要

为了探索开发一种全新的高效灵活的煤基热电联产机组

本文从超临界二氧化碳布雷顿循环入手

基于FORTRAN平台开发出300 MW煤基超临界二氧化碳热电联产机组的计算程序

并通过该程序对该机组能源利用效率和调峰能力进行了计算和分析。结果表明:设计工况下

该机组供电煤耗为140.5 g/(k W·h)

供热煤耗为37.1 kg/GJ

能源利用效率高达90.2%;供热负荷越低的工况

供电煤耗和能源利用效率受供电负荷调节的影响越敏感;在任意供热条件下

该机组供电负荷均可以在0~100%的范围内任意调节

不存在最小凝汽流量和锅炉最低稳燃负荷的限制

热电完全解耦。

Abstract

In order to explore and develop a new type of efficient and flexible coal-fired cogeneration unit

this study starts with the supercritical CO_2 Brayton cycle and develops a calculation program for a 300 MW coal-fired supercritical CO_2 cogeneration unit based on the FORTRAN platform. Through this program

the energy efficiency and peak regulation capacity of the unit are calculated and analyzed. The results show that under the design condition

the coal consumption of the unit is 140.5 g/(k W·h)

the heating coal consumption is 37.1 kg/GJ

and the energy utilization efficiency is as high as 90.2%. The lower the heating load

the more sensitive the coal consumption and energy utilization efficiency are affected by power supply load. Under any heating condition

the power supply load of the unit can be arbitrarily adjusted in the range of 0 to 100%. There is no limit on the minimum gas flow rate and the minimum stable combustion load of the boiler

and the thermal electricity is completely decoupled.

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