Thermo-economic performance analysis for wide-load and high-efficiency regenerative system based on back-pressure steam turbine

XUE Zhaonan; SHI Hui; CHEN Lin; WANG Ting; XIE Tian; YU Xiaobing; HAN Lei

doi:10.19666/j.rlfd.201801012

English Version Reader LoginJournal Login

您当前的位置：

首页 >

文章列表页 >

Thermo-economic performance analysis for wide-load and high-efficiency regenerative system based on back-pressure steam turbine

更新时间：2025-09-28

- Thermo-economic performance analysis for wide-load and high-efficiency regenerative system based on back-pressure steam turbine
- Thermal Power Generation Vol. 47, Issue 9, Pages: 103-108(2018)
- 作者机构：
  
  1. 西安西热节能技术有限公司
  2. 杭州中能汽轮动力有限公司
  3. 淮浙煤电有限责任公司凤台电厂
- 作者简介：
- 基金信息：
- DOI：10.19666/j.rlfd.201801012
  CLC： TK261
- Published Online：03 September 2018，
  
  Published：2018
- 稿件说明：
移动端阅览
XUE Zhaonan, SHI Hui, CHEN Lin, et al. Thermo-economic performance analysis for wide-load and high-efficiency regenerative system based on back-pressure steam turbine[J]. Thermal power generation, 2018, 47(9): 103-108.
DOI：

XUE Zhaonan, SHI Hui, CHEN Lin, et al. Thermo-economic performance analysis for wide-load and high-efficiency regenerative system based on back-pressure steam turbine[J]. Thermal power generation, 2018, 47(9): 103-108. DOI： 10.19666/j.rlfd.201801012.

摘要

针对基于背压式汽轮机宽负荷高效回热系统的4种不同方案进行研究

并对不同方案下机组的热经济性进行了分析对比。结果表明:无论是纯背压式汽轮机还是抽背式汽轮机

从主蒸汽抽汽做功方案的热经济性优于从屏式过热器抽汽方案;将背压式汽轮机的经济运行工况向低负荷侧调整

利用在低负荷下背压式汽轮机和主汽轮机缸体的效率差可以获得较好的节能效果

在30%负荷下最大可降低供电煤耗率3.21 g/(kW·h);本文设计的回热系统可以提高低负荷下给水温度

一方面有利于提高循环热效率

另一方面有利于提高省煤器入口烟气温度

改善低负荷脱硝问题。

Abstract

Four different schemes for a wide-load and high-efficiency regenerative system based on back-pressure steam turbine are studied. The thermo-economic performances of the units for different schemes are analyzed and compared. The results show that

regardless of whether it is a pure back-pressure steam turbine or a back-pressure extraction steam turbine

the thermo-economic performance of the main steam extraction scheme is better than that of the platen superheater extraction steam scheme. In addition

when the economic operation conditions of the backpressure steam turbine are adjusted to low-load side

the efficiency difference between back-pressure steam turbine and main steam turbine cylinder at low load can achieve better energy-saving effect. Especially

at 30% THA load

the coal consumption rate of power supply unit can be reduced by at most 3.21 g/(kW·h). Finally

the regenerative system designed in this study can improve the feed water temperature under low-load operation condition

which is beneficial to improve the cycle thermal efficiency

the inlet flue gas temperature of the economizer and the low-load denitration problem.

关键词

Keywords

references

Views

147

下载量

CSCD

Alert me when the article has been cited

提交

Tools

Publicity Resources

ELIMINATION OF STEAM-EXHAUSTING NOISE FOR BACK-PRESSURE STEAM TURBINE

CAUSE ANALYSIS OF DRAIN PUMP DAMAGE FOR LOW-PRESSURE HEATER AND REMEDY THEREOF

Countermeasures for SCR denitration system of coal-fired unit during low-load operation

Experimental research on water balance of flue gas desulfurization system in jet bubbling reactor

Thermal economy research for double-reheat unit equipped with heat recovery steam turbine

Related Author

SONG Ru-jiang(Smeltery under Daye Non-Ferrous Metal Co

ZHANG Jin-bao(Sanhe Power Generation Co Ltd

YAO Yushan

XU Qi

ZHOU Keyi

ZHANG Feiran

LIU Haibin

TANG Longhua

Related Institution

Daye Nonferrous Metals Company Smelting Plant

Sanhe Power Generation Co., Ltd

School of Energy and Environment, Southeast University

Shenhua Guohua Qingyuan Power Generation Co., Ltd

Guangdong Power Grid Co., Ltd. Electric Power Science Research Institute

AI问答

⁰