Removal of polychlorinated naphthalenes by desulfurization and emissions of polychlorinated naphthalenes from sintering plant

被引：10

作者：

Wang, Mengjing ^{[1
,2
,3
]}

Liu, Wenbin ^{[1
,2
]}

Hou, Meifang ^{[3
]}

Li, Qianqian ^{[1
,2
]}

Han, Ying ^{[1
,2
]}

Liu, Guorui ^{[1
,2
]}

Li, Haifeng ^{[1
,2
]}

Liao, Xiao ^{[1
,2
]}

Chen, Xuebin ^{[1
,2
]}

Zheng, Minghui ^{[1
,2
]}

机构：

[1] Chinese Acad Sci, Res Ctr Ecoenvironm Sci, State Key Lab Environm Chem & Ecotoxicol, Beijing 100085, Peoples R China

[2] Univ Chinese Acad Sci, 19A Yuquan Rd, Beijing 100049, Peoples R China

[3] Shanghai Inst Technol, Sch Ecol Technol & Engn, Shanghai 201418, Peoples R China

来源：

SCIENTIFIC REPORTS | 2016年 / 6卷

基金：

中国国家自然科学基金;

关键词：

DIBENZO-P-DIOXINS; STACK GAS EMISSIONS; SECONDARY COPPER; PCDD/FS; PCNS; IDENTIFICATION; FACILITIES; BIPHENYLS; PCBS;

D O I：

10.1038/srep26444

中图分类号：

O [数理科学和化学]; P [天文学、地球科学]; Q [生物科学]; N [自然科学总论];

学科分类号：

07 ; 0710 ; 09 ;

摘要：

The sintering flue gas samples were collected at the inlets and outlets of the desulfurization systems to evaluate the influence of the systems on PCNs emission concentrations, profiles, and emission factors. The PCNs concentrations at the inlets and outlets were 27888-153672 pg m(-3) and 11988-42245 pg m(-3), respectively. Desulfurization systems showed excellent removal for PCNs, and the removal efficiencies of PCNs increase with increasing chlorination level. Lower chlorinated homologs are more sensitive to the desulfurization process than higher ones. High levels of PCNs were also detected in the gypsum (11600-29720 pg g(-1)) and fly ash samples (4946-64172 pg g(-1)). The annual total emissions of PCNs released to flue gas and gypsum from the sintering plants were about 394 kg, 48.5% of which was in gypsum. The surface area of the fly ash samples increased significantly from the first to the fourth stage of the series-connected electrostatic precipitator, accompanying obvious rising of concentration of PCNs in the fly ash samples.

引用

页数：9

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