Efficient Inhibition of N2O during NO Absorption Process Using a CuO and (NH4)2SO3 Mixed Solution

被引：6

作者：

Xiong, Yongheng ^{[1
]}

Zhong, Qin ^{[1
]}

Ou, Man ^{[1
]}

Cai, Wei ^{[2
]}

Wan, Shipeng ^{[1
]}

Yu, Yang ^{[1
]}

Zhang, Shule ^{[1
]}

机构：

[1] Nanjing Univ Sci & Technol, Sch Chem Engn, Nanjing 210094, Jiangsu, Peoples R China

[2] Nanjing Univ Informat Sci & Technol, Sch Environm Sci & Engn, Jiangsu Collaborat Innovat Ctr Atmospher Environm, Nanjing 210044, Jiangsu, Peoples R China

来源：

INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH | 2018年 / 57卷 / 39期

基金：

中国国家自然科学基金;

关键词：

SELECTIVE CATALYTIC-REDUCTION; ISOLATED CU2+ IONS; FE-II-EDTA; NITRIC-OXIDE; ENHANCED ABSORPTION; AQUEOUS-SOLUTIONS; CARBON NANOTUBES; ACTIVE-SITES; KINETICS; SO2;

D O I：

10.1021/acs.iecr.8b03307

中图分类号：

TQ [化学工业];

学科分类号：

0817 ;

摘要：

The discovery of effective methods toward nitric oxide (NO) removal by solution is valuable for the cost-effective flue gas control. In this study, it is first reported that nitrous oxide (N2O) is obviously suppressed by using copper oxide (CuO) combined with (NH4)(2)SO3 (NS) solution. CuO has been characterized, and the effects of reactants concentration, additives, temperature, pH and powder size on NO absorption process have been evaluated. The selectivity of N2O can drop from 91.30% to 11.25% under the optimum experimental conditions. Furthermore, based on the method of single-factor analysis, the inhibition of N2O is identified as the coeffect of NS/CuO. In addition, the pathways of NO removal are divided into two parts-N2O formation and NO absorption-and its ratio is calculated in the range of 0.29-0.53. Because of the continuous supply of NS from ammonia desulfurization, this study opens the feasibility of simultaneous desulfurization and denitrification.

引用

页码：13010 / 13018

页数：9

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