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

Jianzhong LIU; Cong CHEN; Zhihao SUN; Jingfeng WU; Xiaojun WANG

doi:10.12096/j.2096-4528.pgt.20049

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

Factory Green Island and Digital Twin Technology | 更新时间：2025-07-04

- Desulfurization Wastewater-assisted Coal Electrolysis for Hydrogen Production in Coal-fired Power Plants
- Power Generation Technology Vol. 41, Issue 5, Pages: 536-542(2020)
- 作者机构：
  
  能源清洁利用国家重点实验室(浙江大学能源工程学院), 浙江省杭州市 310027
- 作者简介：
- 基金信息：
  
  National Key Research and Development Program of China(2016YFB0600505)
- DOI：10.12096/j.2096-4528.pgt.20049
  CLC： TK91
- Received：28 June 2020，
  
  Published：31 October 2020
- 稿件说明：
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Jianzhong LIU, Cong CHEN, Zhihao SUN, et al. Desulfurization Wastewater-assisted Coal Electrolysis for Hydrogen Production in Coal-fired Power Plants[J]. Power Generation Technology, 2020, 41(5): 536-542.
DOI：

Jianzhong LIU, Cong CHEN, Zhihao SUN, et al. Desulfurization Wastewater-assisted Coal Electrolysis for Hydrogen Production in Coal-fired Power Plants[J]. Power Generation Technology, 2020, 41(5): 536-542. DOI： 10.12096/j.2096-4528.pgt.20049.

摘要

燃煤电厂脱硫工艺产生的脱硫废水具有高盐分、腐蚀性和结垢性等特点，是电厂废水处理中最难的一个环节。基于H型电解池对脱硫废水及其辅助煤电解的特性进行了研究，在脱硫废水资源化利用的同时吸纳燃煤电厂的过余电力。结果表明：脱硫废水经过酸化后电解性能明显高于水，可以降低电解制氢的电耗；仅脱硫废水不能促进煤的电氧化，仍需要添加部分铁离子作为催化剂，但未经酸化的脱硫废水可以促进铁离子的催化作用，从而进一步降低电解制氢的电耗。基于此，提出了酸化处理、直接利用和添加煤粉3种可能的电解脱硫废水制氢的工艺手段。

Abstract

The desulfurization wastewater produced by the desulfurization process of coal-fired power plants has the characteristics of high salinity

corrosiveness and scaling

which is the most difficult part in the treatment of wastewater. The characteristics of desulfurization wastewater-assisted coal electrolysis were studied based on H-type electrolytic cell

so as to realize the simultaneous utilization of desulfurization wastewater and excess power from coal-fired power plants. The results show that the electrolytic performance of desulfurization wastewater after acidification is significantly higher than that of water

which can reduce the power consumption of hydrogen production by electrolysis. Desulfurization wastewater alone cannot promote the electrical oxidation of coal

so iron ions are still needed to be added as catalyst. Unacidified desulfurization wastewater can promote the catalytic effect of iron ions

thereby further reducing the power consumption of hydrogen production. Based on this

three possible processes of desulfurization wastewater electrolysis for hydrogen production

including acidification treatment

direct utilization and pulverized coal addition

were proposed.

关键词

Keywords

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