超超临界机组平朔煤掺配掺烧及煤灰固硫试验研究

doi:10.11930/j.issn.1004-9649.2012.9.11.5

中国电力 ›› 2012, Vol. 45 ›› Issue (9): 11-16.DOI: 10.11930/j.issn.1004-9649.2012.9.11.5

超超临界机组平朔煤掺配掺烧及煤灰固硫试验研究

韩佰春¹, 才汝骏¹, 周永刚², 李培², 李帅英², 赵虹²

1.中国中煤能源集团有限公司,北京 100120;
2. 浙江大学热能工程研究所,浙江杭州 310027

收稿日期:2012-05-25 出版日期:2012-09-18 发布日期:2016-02-29
作者简介:韩佰春（1971-）,男,江苏沛县人,高级工程师,从事煤炭洗选加工和煤炭洁净利用方面的研究。

Research on Blending of Pingshuo Coal Based on Unit Adaptability and Sulfur Retention by Ash of 1 000-MW Ultra-Supercritical Units

HAN Bai-chun¹, CAI Ru-jun¹, ZHOU Yong-gang², LI Pei², LI Shuai-ying², ZHAO Hong²

1. China National Coal Group Corporation Limited, Beijing 100120, China;
2. State Key Laboratory of Clean Energy Utilization, Zhejiang University, Hangzhou 310027, China

Received:2012-05-25 Online:2012-09-18 Published:2016-02-29

摘要/Abstract

摘要： 在1 000 MW超超临界机组上进行平朔煤与印尼煤、平朔煤与蒙煤掺配掺烧试验,并以常用印尼煤作为对比,得到电厂燃用平朔煤机组适应性及煤灰固硫特性。试验结果表明：平朔煤掺入后机组适应性良好,制粉系统、主蒸汽及再热蒸汽参数正常,炉膛结渣问题明显改善,且单位发热量制粉电耗较低,但排烟损失及机械未完全燃烧损失增加,锅炉效率略有下降;平朔煤与蒙煤掺配后固硫率达9.23%,固硫效果对SO₂排放浓度及脱硫成本降低明显,而平朔煤与印尼煤掺配后几乎无固硫效果。由于电厂炉膛温度高于CaSO₄受热分解温度,电厂试验固硫率低于实验室试验固硫率。

关键词: 平朔煤, 煤灰固硫, 钙硫摩尔比, 固硫率, 脱硫成本

Abstract: Blended Pingshuo coal and Indonesia coal and blended Pingshuo coal and Mongolia coal are burned in a 1000-MW ultra-supercritical unit in a power plant for comparison with conventional Indonesia coal to analyze the adaptability and sulfur-fixing rate of the unit. The unit shows good adaptability with normal coal pulverizing system and normal main steam and reheat steam parameters after the Pingshuo coal is blended in. The slagging condition is improved significantly, and the pulverizing electric consumption per calorific value is decreased, but the boiler efficiency is decreased slightly with the flue gas loss and the mechanism inadequacy burning loss increases. The sulfur-fixing rate of Pingshuo coal and Mongolia coal blending is 9.23 percent, which is significant for decreasing the emission concentration of SO₂ and the desulphurization cost. However, the Pingshuo coal and Indonesia coal blending shows almost no sulfur-fixing effect. The sulfur-fixing rate by power plant tests is much lower than that by lab tests because the furnace temperature is much higher than the decomposition temperature of CaSO₄.

Key words: Pingshuo coal, sulfur retention by ash, Ca/S molar ratio, sulfur-fixing rate, desulphurization cost

中图分类号:

TM621.2

韩佰春, 才汝骏, 周永刚, 李培, 李帅英, 赵虹. 超超临界机组平朔煤掺配掺烧及煤灰固硫试验研究[J]. 中国电力, 2012, 45(9): 11-16.

HAN Bai-chun, CAI Ru-jun, ZHOU Yong-gang, LI Pei, LI Shuai-ying, ZHAO Hong. Research on Blending of Pingshuo Coal Based on Unit Adaptability and Sulfur Retention by Ash of 1 000-MW Ultra-Supercritical Units[J]. Electric Power, 2012, 45(9): 11-16.

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超超临界机组平朔煤掺配掺烧及煤灰固硫试验研究

Research on Blending of Pingshuo Coal Based on Unit Adaptability and Sulfur Retention by Ash of 1 000-MW Ultra-Supercritical Units

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超超临界机组平朔煤掺配掺烧及煤灰固硫试验研究

Research on Blending of Pingshuo Coal Based on Unit Adaptability and Sulfur Retention by Ash of 1 000-MW Ultra-Supercritical Units

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