Removal of NOx by microwave reactor with ammonium bicarbonate and Ga-A zeolites at low temperature

被引：22

作者：

Wei, Z. S. ^{[1
]}

Du, Z. Y.

Lin, Z. H.

He, H. M.

Qiu, R. L.

机构：

[1] Sun Yat Sen Univ, Sch Environm Sci & Engn, Guangzhou 510275, Peoples R China

[2] Guangdong Univ Technol, Sch Light Ind & Chem Engn, Guangzhou 510006, Peoples R China

来源：

ENERGY | 2007年 / 32卷 / 08期

关键词：

low temperature; nitrogen oxides (NOx); microwave reactor; Ga-A zeolites; ammonium bicarbonate (NH4HCO3); denitrification; SELECTIVE CATALYTIC-REDUCTION;

D O I：

10.1016/j.energy.2006.11.007

中图分类号：

O414.1 [热力学];

学科分类号：

摘要：

Microwave reactor with the mixture of ammonium bicarbonate (NH4HCO3) and Ga-A zeolites was set up to study the removal of nitrogen oxides (NOx) from waste gas with excess oxygen concentration (14-19%) at low temperature (80-120 degrees C). The results showed that the microwave reactor filled with NH4HCO3 and Ga-A zeolites could reduce NOx to nitrogen with the best purifying efficiency of 95.45% and the best denitrification amount of 89.28 mg h(-1). The optimal microwave power and residence time (RT) on denitrification was 259-280 W and 0.259s, respectively. Microwave denitrification effect of the experiment using ammonium bicarbonate and Ga-A zeolites was much higher than that using ammonium bicarbonate or Ga-A zeolites only. The mechanism for microwave-induced NOx reduction can be explained as the microwave-induced catalytic reaction between NOx and ammonium bicarbonate with Ga-A zeolites being the catalyst and microwave absorbent. (c) 2006 Elsevier Ltd. All rights reserved.

引用

页码：1455 / 1459

页数：5

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