负载镍和酸改性活性炭脱硫影响因素

doi:10.11934/j.issn.1673-4831.2018.08.013

生态与农村环境学报 ›› 2018, Vol. 34 ›› Issue (8): 762-768.doi: 10.11934/j.issn.1673-4831.2018.08.013

• 污染控制与修复 • 上一篇

负载镍和酸改性活性炭脱硫影响因素

黄帮福^1,2, 耿朝阳³, 施哲^1,2, 丁跃华^1,2, 张桂芳^1,2, 周晓雷^1,2, 刘兰鹏^1,2

1. 昆明理工大学冶金工程系, 云南昆明 650093;
2. 云南省高校复杂铁资源清洁冶金重点实验室, 云南昆明 650093;
3. 首钢京唐钢铁联合有限责任公司, 河北唐山 063200

收稿日期:2017-10-26 出版日期:2018-08-25 发布日期:2018-08-23
通讯作者: 黄帮福,E-mail:yhuang@pku.edu.cn E-mail:yhuang@pku.edu.cn
作者简介:黄帮福(1983-),男,云南潞西人,副教授,博士,主要研究方向为钢铁企业烟气治理。E-mail:kmusthbf@163.com
基金资助:
国家自然科学基金（51664036）；云南省教育厅科学研究基金产业化培育项目（2016CYH07）

Desulfurization Influence Factors of Nickel and Acid Modified Activated Carbon

HUANG Bang-fu^1,2, GENG Chao-yang³, SHI Zhe^1,2, DING Yue-hua^1,2, ZHANG Gui-fang^1,2, ZHOU Xiao-lei^1,2, LIU Lan-peng^1,2

1. Department of Metallurgical Engineering, Kunming University of Science and Technology, Kunming 650093, China;
2. Clean Metallurgy Key Laboratory of Complex Iron Resources, Colleges of Yunnan Province, Kunming 650093, China;
3. Shougang Jintang United Iron & Steel Co. Ltd., Tangshan 063200, China

Received:2017-10-26 Online:2018-08-25 Published:2018-08-23

摘要/Abstract

摘要：

钢铁企业烧结烟气温度低且具有多污染物排放特点。活性炭（AC）是一种具有丰富孔隙结构和巨大比表面积的碳质吸附材料，且负载镍活性炭有较好的低温脱硫性能。为深入探究酸改性后负载镍活性炭用于钢铁企业烧结烟气低温脱硫的可行性，采用硝酸对椰壳活性炭进行改性并负载镍，模拟烧结烟气开展了反应温度和改性条件对活性炭脱硫影响研究，通过扫描电子显微镜（SEM）、比表面积测定（BET）、X射线衍射（XRD）和傅里叶转换红外光谱（FT-IR）对炭基和载镍活性炭进行表征。分析表明：Ni负载量为1%时，活性炭具有最佳脱硫能力；负载1%镍的硝酸改性活性炭（1Ni/NAC）最佳脱硫反应温度为60℃；AC载体经硝酸处理后脱硫性能得以提高。活性炭经硝酸处理后仍然保留丰富的多孔结构，比表面积、微孔容积和总孔容积均有所增加，酸改性可去除部分杂质以改善Ni的分散度，活性炭表面的酸性含氧官能团也有所增加。研究成果可为活性炭治理钢铁企业烧结烟气多污染物提供借鉴。

关键词: 钢铁企业, 烧结烟气, 活性炭, 镍, 催化剂, 脱硫

Abstract:

Sintering flue gas produced by iron and steel enterprises has the characteristics of low temperature and multi-pollutant emission. Activated carbon (AC) is the carbonaceous sorbing material having a porous structure and considerable specific surface area. Ni/AC has better characteristics of low-temperature desulfurization. To research the usability of a desulfurizer for low-temperature desulfurization of iron-steel sintering flue gas, coconut husk AC was taken as the object of our research. Coconut husk AC is modified using nitric acid and loaded using nickel. By simulating sintering flue gas, we analyzed the desulfurization influence factors of reaction temperature and modifying conditions by conducting a desulfurization experiment. The surface properties of AC and the desulfurizer were studied via SEM, BET, XRD, and FTIR. The results of the desulfurization test were as follows:the Ni optimum load quantity is 1%, the optimum reaction temperature for 1Ni/NAC desulphurization is 60℃, and the desulfurizing properties of 1Ni/NAC have been raised. Through characterization of the structure and compose of AC, NAC, Ni/AC, and 1Ni/NAC, the acid modification AC still has a considerably porous structure, its specific surface area, micropore volume, and total volume markedly increased, and the nitric acid can remove the impurity and increase the acidity oxygen-containing functional groups. These research findings can aid in low-temperature desulfurization and the simultaneous control of multiple pollutants for iron-steel sintering flue gas by making use of modified AC.

Key words: iron and steel enterprise, sintering flue gas, activated carbon, nickel, catalyst, desulfurization

中图分类号:

X517

黄帮福, 耿朝阳, 施哲, 丁跃华, 张桂芳, 周晓雷, 刘兰鹏. 负载镍和酸改性活性炭脱硫影响因素[J]. 生态与农村环境学报, 2018, 34(8): 762-768.

HUANG Bang-fu, GENG Chao-yang, SHI Zhe, DING Yue-hua, ZHANG Gui-fang, ZHOU Xiao-lei, LIU Lan-peng. Desulfurization Influence Factors of Nickel and Acid Modified Activated Carbon[J]. Journal of Ecology and Rural Environment, 2018, 34(8): 762-768.

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负载镍和酸改性活性炭脱硫影响因素

Desulfurization Influence Factors of Nickel and Acid Modified Activated Carbon

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