350 MW超临界燃煤供热机组深度脱硫改造研究
赵虎军
（国电龙源节能技术有限公司，北京 100039）
摘要： 中国将在较长时间内以燃煤发电方式为主，需要继续推进环保技术在火电机组中的应用。讨论了一350 MW 超
临界燃煤供热机组为了达到国家和地方的环保要求，对脱硫系统进行改造的研究过程。基于对脱硫系统现状的分析，提出
了不同的改造路线，经对比分析，确定了改造方案，并进行了设计和实施。改造后，在345 MW，280 MW 和170 MW 负
荷工况下的测试结果表明，各工况下1 号机组SO₂排放质量浓度分别为11～15 mg/m³，10.7～12.9 mg/m3，3.62～8.10 mg/m3，
2 号机组SO₂排放质量浓度在2.2～13.5 mg/m³范围内。两台机组每年可以少排放1 200 t SO₂，且经济效益明显。对于城市
供热机组而言，改造后提高了城市空气质量，有显著的社会效益。
关键词： 超临界；供热机组；超低排放；脱硫；燃煤
中图分类号： TM621     文献标志码： A     文章编号： 2095-0802-(2020)12-0088-03
Research on Deep Desulfurization Reformation of 350 MW Supercritical Coal-fired Heating
Supply Unit
ZHAO Hujun
(GD Longyuan Energy Conservation Technology Co., Ltd., Beijing 100039, China)
Abstract: China will mainly use coal-fired power generation for a long time, so it is necessary to continue to promote the
application of environmental protection technology in thermal power units. This paper discussed the research process of reforming
the desulfurization system of a 350 MW supercritical coal-fired heating supply unit in order to meet the national and local environmental
protection requirements. Based on the analysis of the current situation of the desulfurization system, different
reformation routes were put forward. After comparative analysis, the reformation scheme was determined, and the design and
implementation were carried out. After the reformation, the test results at load conditions of 345 MW, 280 MW and 170 MW show
that the SO₂ emission concentration of Unit 1 is 11-15 mg/m³, 10.7-12.9 mg/m³ and 3.62-8.10 mg/m³ respectively, and the SO₂
emission concentration of Unit 2 is within the range of 2.2-13.5 mg/m³. As a result, the two units can reduce the emission of SO₂
by 1 200 t per year, and the economic benefits are obvious. For urban heating supply units, the urban air quality has been improved
after the transformation, which has significant social benefits.

Key words: supercritical; heating supply unit; ultra-low emissions; desulfurization; coal-fired