Research on optimal operation condition of feed water in(ultra) supercritical units

MENG Long; LI Junwan; LONG Guojun; WANG Liang; CHEN Junnan; ZHAO Xiaolin; JIA Lan; WANG Ningfei

doi:10.19666/j.rlfd.202205087

English Version Reader LoginJournal Login

您当前的位置：

首页 >

文章列表页 >

Research on optimal operation condition of feed water in(ultra) supercritical units

更新时间：2025-09-28

- Research on optimal operation condition of feed water in(ultra) supercritical units
- Thermal Power Generation Vol. 52, Issue 1, Pages: 83-88(2023)
- 作者机构：
  
  1. 西安热工研究院有限公司
  2. 安徽华电宿州发电有限公司
  3. 国能宁东第一发电有限公司
- 作者简介：
- 基金信息：
- DOI：10.19666/j.rlfd.202205087
  CLC： TM621
- Published：2023
- 稿件说明：
移动端阅览
MENG Long, LI Junwan, LONG Guojun, et al. Research on optimal operation condition of feed water in(ultra) supercritical units[J]. Thermal power generation, 2023, 52(1): 83-88.
DOI：

MENG Long, LI Junwan, LONG Guojun, et al. Research on optimal operation condition of feed water in(ultra) supercritical units[J]. Thermal power generation, 2023, 52(1): 83-88. DOI： 10.19666/j.rlfd.202205087.

摘要

超（超）临界机组发电效率高，碳排放低，是我国火电机组发展的主力，对其给水运行工况进行优化具有重要指导意义。通过就地取样试验研究了超（超）临界机组不同给水运行工况的最优控制指标，研究了给水取样间集中取样对给水水质的影响，开发了给水运行工况智能化控制系统。结果表明：AVT(O)工况下给水电导率的最优目标值为6.7μS/cm

OT工况下给水氧质量浓度的最优目标值为15μg/L，给水电导率的最优目标值为3.0μS/cm；较长的给水取样管路会造成铁腐蚀产物的沉积，干扰对机组腐蚀情况的判断；给水加氧产生的铬酸根离子只与取样管的氧化溶出有关，与水汽系统无关。

Abstract

With high power generation efficiency and low carbon emission

(ultra) supercritical unit is the main type in China's development of thermal power units. Optimization on feed water operating condition of the(ultra) supercritical unit is of great guiding significance. The optimal control indexes of different feed water operating conditions of(ultra) supercritical units are investigated by in-situ sampling test

and the influence of centralized sampling on feed water quality is researched. Moreover

the intelligent control system for feed water operating condition is developed. The results show that

the optimal target value of feed water conductivity is 6.7 μS/cm under AVT(O) condition

the optimal target value of feed water dissolved oxygen is 15 μg/L and the optimal target value of feed water conductivity is 3.0 μS/cm under OT condition. Long sampling pipeline of feed water will cause the deposition of iron corrosion products

and interfere with the judgment of unit corrosion. The chromates produced by adding oxygen to feed water is only related to the oxidation of the sampling tube and has nothing to do with the water vapor system.

关键词

Keywords

references

Views

203

下载量

CSCD

Alert me when the article has been cited

提交

Tools

Publicity Resources

PRACTICE OF CHANGING FEED-WATER TREATMENT MODE FOR 300 MW UNIT IN HEZE POWER PLANT FROM AVT(R) INTO AVT(O)

CLOSED-LOOP CONTROL SYSTEM OF CFB BOILERS

STUDY ON SIMULATION OF FEED-WATER FULL-PROCESS CONTROL SYSTEM IN EACH STAGE FOR A DRUM BOILER

INFLUENCE OF OXYGEN TREATMENT FOR SUPERCRITICAL UNITS UPON FORMATION AND PEEL-OFF OF OXIDE SKIN

Application of full protection oxygenated technology in an ultra-supercritical 1000MW unit

Related Author

LI Xiu-juan Heze Power Plant

CHEN Xiuping

HUANG Weigang

YAN Jun-feng

PAN Wei-jia(Changsha University of Science & Technology

YU Xuebin

HE Guilin

WANG Hai'ou

Related Institution

Heze Power Plant

Daliuta Thermal Power Plant

Daliuta Thermal Power Plant Shaanxi Shenmu

Shaanxi Shenmu

Changsha University of Science and Technology

AI问答

⁰