Decomposition of Chloride and Ammoniate in the Evaporation Process of Desulfurization Wastewater With High Temperature Flue Gas

Chunsong YE; Rong CAO; Wei LIANG; Wenyu ZHU; Wei ZHENG

doi:10.12096/j.2096-4528.pgt.18267

English Version Reader LoginJournal Login

您当前的位置：

首页 >

文章列表页 >

Decomposition of Chloride and Ammoniate in the Evaporation Process of Desulfurization Wastewater With High Temperature Flue Gas

Power Generation and Environmental Protection | 更新时间：2025-07-04

- Decomposition of Chloride and Ammoniate in the Evaporation Process of Desulfurization Wastewater With High Temperature Flue Gas
- Power Generation Technology Vol. 40, Issue 4, Pages: 362-366(2019)
- 作者机构：
  
  1.武汉大学动力与机械学院, 湖北省武汉市 430072
  2.湖北能源集团股份有限公司, 湖北省武汉市 430070
  3.成都锐思环保技术股份有限公司, 四川省成都市 610091
- 作者简介：
- 基金信息：
- DOI：10.12096/j.2096-4528.pgt.18267
  CLC：
- Received：07 January 2019，
  
  Published：31 August 2019
- 稿件说明：
移动端阅览
Chunsong YE, Rong CAO, Wei LIANG, et al. Decomposition of Chloride and Ammoniate in the Evaporation Process of Desulfurization Wastewater With High Temperature Flue Gas[J]. Power Generation Technology, 2019, 40(4): 362-366.
DOI：

Chunsong YE, Rong CAO, Wei LIANG, et al. Decomposition of Chloride and Ammoniate in the Evaporation Process of Desulfurization Wastewater With High Temperature Flue Gas[J]. Power Generation Technology, 2019, 40(4): 362-366. DOI： 10.12096/j.2096-4528.pgt.18267.

摘要

为实现脱硫废水零排放，脱硫废水高温烟气蒸发结晶技术逐渐发展起来，脱硫废水蒸发过程中结晶盐的高温分解可能是制约蒸发技术进一步推广应用的关键问题。介绍了火力发电厂脱硫废水的特点及蒸发结晶过程中盐分的稳定性，重点介绍了水合氯化镁的几种热分解机理。综合分析表明，在旁路高温烟气蒸发处理过程中，氯化镁和铵盐可热分解，分别产生氯化氢气体和氨气，将会引起后续脱硫废水排放量增加、烟囱出口氨浓度升高。最后讨论了旁路高温烟气蒸发系统引起电厂粉煤灰的质量降低等问题。

Abstract

In order to realize zero discharge of desulfurization wastewater

evaporation and crystallization technology of desulfurization wastewater with high temperature flue gas has gradually developed. The decomposition of crystalline salts in desulfurization wastewater evaporation process is probably the key problem that may influence the further application of evaporation technology. This paper briefly introduced the characteristics of desulphurization wastewater in thermal power plants and the stability of salt during evaporation and crystallization. The thermal decomposition mechanism of hydrated magnesium chloride was introduced emphatically. The comprehensive analysis shows that magnesium chloride and ammoniate will be decomposed to produce hydrogen chloride gas and ammonia respectively

which will increase the content of chlorine ion in the desulphurization wastewater and ammonia concentration at chimney outlet. Finally

the quality reduction of fly ash in the evaporation process with by-pass high-temperature flue gas was also discussed.

关键词

Keywords

references

李冠华, 李德波, 曾庭华, 等.广东某电厂石灰石-石膏湿法烟气脱硫系统效率低的关键原因与改造措施[J].广东电力, 2017, 30(6):6-10.

姜秀平, 刘有智.湿法烟气脱硫技术研究进展[J].应用化工, 2013, 42(3):535-538.

吴怡卫.石灰石-石膏湿法烟气脱硫废水处理的研究[J].中国电力, 2006, 39(4):75-78.

王敏琪.火电厂湿式烟气脱硫废水特性及处理系统研究[D].杭州: 浙江工业大学, 2013. http://cdmd.cnki.com.cn/Article/CDMD-10337-1013365135.htm .

龙国庆.燃煤电厂湿法脱硫废水蒸发结晶处理工艺的选择[J].中国给水排水, 2013, 29(24):5-8.

叶春松, 黄建伟, 刘通, 等.燃煤电厂烟气脱硫废水处理方法与技术进展[J].环境工程, 2017, 35(11):10-13.

郜瑞莹, 林建中.燃煤电厂脱硫废水零排放工艺路线研究[J].南方能源建设, 2018, 5(1):107-112.

杨跃伞, 苑志华, 张净瑞, 等.燃煤电厂脱硫废水零排放技术研究进展[J].水处理技术, 2017(6):29-33.

任丹丹, 冯罗澍, 陈颖.大型燃煤电厂脱硫废水烟气利用技术研究[J].浙江电力, 2018, 37(3):82-85.

黄琼珠, 路贵民, 汪瑾, 等.MgCl 2 ·6H 2 O热分解机理的研究[J ] .无机材料学报, 2010, 25(3):306-310..

Olszak M.On the thermal stability of some ammonium salts[J].Thermochimica Acta, 2001, 378(1):107-112.

张京京, 冯雅丽, 李浩然.硫酸镁直接热解制备氧化镁的研究[J].无机盐工业, 2010, 42(5):11-14.

周桓, 袁建军.高纯无水氯化镁制备技术的进展[J].过程工程学报, 2004, 4(3):276-281.

Eom H C, Park H, Yoon H S.Preparation of anhydrous magnesium chloride from ammonium magnesium chloride hexahydrate[J].Advanced Powder Technology, 2010, 21(2):125-130.

Ma S, Chai J, Wu K, et al.Experimental and mechanism research on volatilization characteristics of HCl in desulfurization wastewater evaporation process using high temperature flue gas[J].Journal of Industrial&Engineering Chemistry, 2018, 66:311-317.

李飞.脱硫废水烟道蒸发零排放技术简介[J].资源节约与环保, 2017(10):1-2.

袁伟中, 刘春红, 童小忠, 等.燃煤锅炉采用烟气旁路干燥技术实现脱硫废水零排放[J].电力科技与环保, 2017, 33(3):18-21.

全国墙体屋面及道路用建筑材料标准化技术委员会.硅酸盐建筑制品用粉煤灰: JC/T 409-2016[S].北京: 中国建筑工业出版社, 2016.

Views

下载量

CSCD

Alert me when the article has been cited

提交

Tools

Publicity Resources

Study on the Removal of Heavy Metals From Wastewater by Ultra High Lime With Aluminum Precipitation Coupling Activated Carbon Adsorption in 300 MW Coal-Fired Units

Preparation of Sulfur-doped Porous Carbon and Its Electro-adsorption Performance for Heavy Metals in Desulfurization Wastewater

Desulfurization Wastewater-assisted Coal Electrolysis for Hydrogen Production in Coal-fired Power Plants

Research Progress on Control of Heavy Metals Pollutants in Desulfurization Wastewater and Sludge of Coal-fired Power Plants

Related Author

LIU Gengsheng

ZHANG Jianyong

SUN Quan

CAO Shan

GONG Anqi

JIANG Lin

ZHANG Yongsheng

Related Institution

Sanhe Power Generation Co., Ltd.

School of Energy, Power and Mechanical Engineering, North China Electric Power University, Changping District

Key Laboratory of Power Station Energy Transfer Conversion and System (North China Electric Power University), Changping District

State Key Laboratory of Energy Clean Utilization(College of Energy Engineering, Zhejiang University)

AI问答

⁰