无氧条件下Na、K、Fe对生物质焦炭脱硝效率影响的试验研究

doi:10.11930.2015.1.157

中国电力 ›› 2015, Vol. 48 ›› Issue (1): 157-160.DOI: 10.11930.2015.1.157

• 节能与环保 • 上一篇

无氧条件下Na、K、Fe对生物质焦炭脱硝效率影响的试验研究

云端

中国大唐集团科技工程有限公司，北京 100097

收稿日期:2014-10-20 出版日期:2015-11-25 发布日期:2015-11-24
作者简介:云端（1984—），男，吉林德惠人，硕士，工程师，从事火力发电厂污染物控制领域研究。E-mail: yunduan@china-cdt.com

Experimental Study Effects of Na, K, Fe on the Denitrification Efficiency of Biomass Char in the Absence of Oxygen

YUN Duan

China Datang Technologies & Engineering Co., Ltd., Beijing 100097, China

Received:2014-10-20 Online:2015-11-25 Published:2015-11-24

摘要/Abstract

摘要： 生物质中Na、K、Fe含量较高，对低氮燃烧所采用的再燃脱硝过程有利。为有效利用中国的生物质资源，有必要对生物质焦炭的脱硝性能进行研究，为此在固定床系统上研究了无氧条件下Na、K、Fe对异相脱硝反应的影响。试验结果表明，适量的Na、K、Fe可以大大提高生物质焦炭的脱硝效率，在酸洗后的生物质焦炭中添加Na、K、Fe会使得脱硝效率显著增加。其中，当生物质焦炭与Na2CO3或K2CO3的质量之比为0.1时，生物质焦炭的脱硝效率可增加20%以上，且脱硝效率随Na、K添加量的增加而增加；Fe对生物质焦炭脱硝效率的促进效果明显优于Na、K元素，生物质焦炭与Fe（ＮＯ３）3·9H2O质量之比为0.01时即可使生物质焦炭的脱硝效率增加20%左右，但当二者质量之比超过0.04时，生物质焦炭的脱硝效率随Fe添加量的增加而降低。

关键词: 低氮燃烧, 再燃脱硝, 生物质燃料, 焦炭脱硝, Na、K、Fe

Abstract: The contents of Na, K and Fe in biomass fuels are high, which is helpful to reburning denitrification adopted for low-NOx combustion. Considering the effective utilization of biomass resources in China, it is necessary to study the denitration performance of biomass char. Therefore, the effects of Na, K and Fe in the NO-char reaction are studied in the fixed-bed system. The results show that adequate Na, K and Fe can increase the reduction of NOx, and by adding these elements to the acid-washed de-ashed biomass char, the NOx removal efficiency can also be raised substantially. In addition, the denitrification efficiency of biomass char will be increased by more than 20% when 0.1 g/g Na2CO3 or K2CO3 being added, and higher increase occurs with the rising amount of Na and K The effect of Fe on biomass char denitrification efficiency is superior to that of Na and K. The denitrification efficiency can be increased by 20% when 0.01 g/g Fe(NO3)3 is added, but it will be decreased while the amount of Fe is more than 0.04 g/g.

Key words: low NOx combustion, reburning denitrification, biomass fuel, biomass char denitrification, Na, K, Fe

中图分类号:

X511
TM621

云端. 无氧条件下Na、K、Fe对生物质焦炭脱硝效率影响的试验研究[J]. 中国电力, 2015, 48(1): 157-160.

YUN Duan. Experimental Study Effects of Na, K, Fe on the Denitrification Efficiency of Biomass Char in the Absence of Oxygen[J]. journal1, 2015, 48(1): 157-160.

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无氧条件下Na、K、Fe对生物质焦炭脱硝效率影响的试验研究

Experimental Study Effects of Na, K, Fe on the Denitrification Efficiency of Biomass Char in the Absence of Oxygen

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无氧条件下Na、K、Fe对生物质焦炭脱硝效率影响的试验研究

Experimental Study Effects of Na, K, Fe on the Denitrification Efficiency of Biomass Char in the Absence of Oxygen

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