ENHANCING SO2 REMOVAL EFFICIENCY BY LIME MODIFIED WITH SEWAGE SLUDGE IN A NOVEL INTEGRATED DESULFURIZATION PROCESS

被引：5
|
作者：
Qin, Linbo [1 ]
Han, Jun [1 ]
Chen, Wangsheng [1 ]
Liu, Zhanzhuang [1 ]
He, Mengxia [1 ]
Xing, Futang [1 ]
机构：
[1] Wuhan Univ Sci & Technol, Coll Resources & Environm Engn, Wuhan 430081, Hubei, Peoples R China
来源：
ENVIRONMENT PROTECTION ENGINEERING | 2017年 / 43卷 / 04期
基金：
中国国家自然科学基金;
关键词：
FLUE-GAS; FLY-ASH; SORBENT; TRANSFORMATION; CAO;
D O I：
10.5277/epe170402
中图分类号：
X [环境科学、安全科学];
学科分类号：
08 ; 0830 ;
摘要：
In China, the sintering process annually emitted around 1.5 million t SO2\, representing 70% of SO2 produced from the iron and steel industry. Lime based sorbent was modified with municipal sewage sludge (MSS) and the influence of the modification on the desulfurization efficiency was investigated in a laboratory-scale novel integrated desulfurization (NID) reactor. The properties of modified sorbent were characterized by the Brunauer Emmett Teller (BET) analyzer and X-ray fluorescence (XRD) analyzer. BET surface area was increased from 17.48 to 46.68 m(2).g(-1) when the MSS/lime ratio increased from 0 to 0.08. Ca(4)AI(8)Si(8)O(32), Ca1.5SiO3.5, Na2Si2O5 and CaSiO3 found in the modified lime benefited for the increase of the BET surface area and pore volume. The effects of sewage sludge/CaO weight ratio, calcination temperature and hydration time on the desulfurization efficiency were also studied. SO2 removal efficiency was increased from 88.7% to 97.3% after using the lime modified with sewage sludge.
引用
收藏
页码：17 / 27
页数：11
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