湿法工艺回收板式SCR废弃催化剂中的钛、钒、钼

doi:10.16085/j.issn.1000-6613.2015.07.038

化工进展 ›› 2015, Vol. 34 ›› Issue (07): 2039-2042,2048.DOI: 10.16085/j.issn.1000-6613.2015.07.038

湿法工艺回收板式SCR废弃催化剂中的钛、钒、钼

赵炜¹, 于爱华², 王虎², 江晓明², 丁杰¹, 董岳¹, 钟秦¹

1 南京理工大学化工学院, 江苏南京 210094;
2 大唐南京环保科技有限责任公司, 江苏南京 211106

收稿日期:2014-10-09 修回日期:2015-02-25 出版日期:2015-07-05 发布日期:2015-07-05
通讯作者: 钟秦,博士,教授。E-mail:zq304@mail.njust.edu.cn。
作者简介:赵炜(1980—),女,博士研究生,讲师。
基金资助:
高等学校博士学科点专项科研基金(20113219110009)、国家自然科学基金(U1162119)、江苏省科技支撑计划(BK20140777)及江苏省自然科学基金(2013003)项目。

Recovery of waste SCR catalyst from titanium, vanadium and molybdenum by wet method

ZHAO Wei¹, YU Aihua², WANG Hu², JIANG Xiaoming², DING Jie¹, DONG Yue¹, ZHONG Qin¹

1 School of Chemical Engineering, Nanjing University of Science and Technology, Nanjing 210094, Jiangsu, China;
2 Datang Nanjing Environmental Protection Technology Co., Ltd., Nanjing 211106, Jiangsu, China

Received:2014-10-09 Revised:2015-02-25 Online:2015-07-05 Published:2015-07-05

摘要/Abstract

摘要： 目前应用最为广泛的烟气脱硝技术是SCR脱硝技术。SCR催化剂是脱硝系统中的核心部分, 其具有一定的寿命。废弃催化剂在未来几年内将急剧增多, 其处置方法少有报道。本文主要研究了SCR废弃催化剂中钛、钒、钼的湿法回收技术。使用Na₂CO₃与SCR催化剂于750℃共混煅烧, 用热水洗涤得到Na₂TiO₃, 酸洗煅烧得到TiO₂。向滤液中加HCl调节pH值到8～9得到MgSiO₃沉淀, 再加入NH₄Cl得到NH₄VO₃沉淀。将沉钒滤液调节pH值为4～5, 加入CaCl₂得到CaMoO₄沉淀。借助XRD、XRF等分析手段对回收产品进行了表征, 优化了回收工艺, 最终得到了纯度高达93%的TiO₂产品。

关键词: 浸取, 催化剂, 回收, 废物处理

Abstract: Selective catalytic reduction (SCR) was the necessary technology for power plant denitrification. SCR catalyst was the core technical section, whose service life is about 3 years. It can be predicted that the deactivated catalyst faced a disposal problem because of the rapid increase in next several years. This article explored the recovery of titanium oxides from SCR deNO_x process from the perspective of recovery utilization. TiO₂ was obtained after the pickling and calcination of Na₂TiO₃, which was from the co-calcination of Na₂CO₃, and catalysts were deactivated at 750℃. MgSiO₃, NH₄VO₃ and CaMoO₄ were obtained by adjusting pH from 8 to 9, adding NH₄Cl and adding CaCl₂, respectively. Recovery products were characterized by X-ray diffraction (XRD) and X-ray fluorescence (XRF). At optimized condition, the purity of the obtained product was higher than 93%.

Key words: leaching, catalyst, recovery, waste treatment

中图分类号:

X705

赵炜, 于爱华, 王虎, 江晓明, 丁杰, 董岳, 钟秦. 湿法工艺回收板式SCR废弃催化剂中的钛、钒、钼[J]. 化工进展, 2015, 34(07): 2039-2042,2048.

ZHAO Wei, YU Aihua, WANG Hu, JIANG Xiaoming, DING Jie, DONG Yue, ZHONG Qin. Recovery of waste SCR catalyst from titanium, vanadium and molybdenum by wet method[J]. Chemical Industry and Engineering Progree, 2015, 34(07): 2039-2042,2048.

参考文献

[1] Chen J P, Yang R T. Selective catalytic reduction of NO with NH₃ on SO₄^2-/TiO₂ super acid catalyst[J]. Journal of Catalysis, 1993, 139:277-278.
[2] Saur O, Bensitel M, Mohammad S A B, et al. The structure and stability of sulfated alumina and titania[J]. Journal of Catalysis, 1986, 99:104-110.
[3] 孙海峰, 杨广春, 高景玉. 延长SCR脱硝催化剂使用寿命的措施探讨[J]. 华电技术, 2009, 31(12):19-25.
[4] Forzatti P. Present status and perspective in De-NO_x SCR catalysis[J]. Applied Catalysis A:General, 2001, 222:221-236.
[5] LEE Jung-bin, EOM Yong-seok, KIM Jun-han, et al. Regeneration of waste SCR catalyst by air lift loop reactor[J]. Journal of Central South University, 2013(5):182-186.
[6] Shang X, Hu G, He C. Regeneration of full-scale commercial honeycomb monolith catalyst (V₂O₅-WO₃/TiO₂) used in coal-fired power plant[J]. Journal of Industrial and Engineering Chemistry, 2012, 18(1):513-519.
[7] Jung Bin Lee, Seong Keun Kim, Dong Wha Kim, et al. Effect of H₂SO₄ concentration in washing solution on regeneration of commercial selective catalytic reduction catalyst[J]. Korean Journal of Chemical Engineering, 2012, 29(2):270-276.
[8] 曾瑞. 浅谈SCR废催化剂的回收再利用[J]. 中国环保产业, 2013(2):39-42.
[9] 朱跃, 何胜, 张扬. 从废烟气脱硝催化剂中回收金属氧化物的方法:中国, 101921916A[P]. 2010-12-22.
[10] 李守信, 索平, 王亦亲, 等. 从SCR脱硝催化剂中回收三氧化钨和偏钒酸铵的方法:中国, 102557142A[P]. 2012-07-11.
[11] 肖雨亭, 赵建新, 汪德志, 等. 选择性催化还原脱硝催化剂钒组分回收的方法:中国, 102732730A[P]. 2012-10-17.
[12] 吴彭森, 陈建立, 和奔流, 等. 一种废旧烟气脱硝用钛钨钒粉体的回收方法:中国, 201310058283.0[P] . 2013-02-25.
[13] 汪德志, 吴刚, 肖雨亭, 等. 从选择性催化还原脱硝催化剂中回收钨组分的方法:中国, 103088217A[P]. 2013-05-08.
[14] 刘清雅, 刘振宇, 李启超. 一种从废弃钒钨钛基脱硝催化剂中回收钒、钨和钛的方法:中国, 103484678A[P]. 2014-01-01.
[15] Lin S L, Hwang C A. Structures of CeO_2-Al₂O₃-SiO₂ glasses[J]. Journal of Non-Crystalline Solids, 1996, 202(1-2):61-67.
[16] 徐敏, 许茜, 刘日强, 等. 沉淀法制备MgSiO₃及其表征[J] . 中国稀土学报, 2010, 28:236-240.
[17] Rios C A, Williams C D. Synthesis of zeolitic materials from natural clinker:A new alternative for recycling coal combustion by-products[J]. Fuel, 2008, 87(12):2482-2492.
[18] Amanpreet K S, Surinder S, Om P P. Neutron irradiation effects on optical and structural properties of silicate glasses[J]. Materials Chemistry and Physics, 2009, 115(2-3):783-788.
[19] Merzbacher C I, White W B. The structure of alkaline earth aluminosilicate glasses as determined by vibrational spectroscopy[J]. Journal of Non-Crystalline Solids, 1991, 130(1):18-34.
[20] 高峰, 颜文斌, 李佑稷, 等. 偏钒酸铵的制备及沉钒动力学[J]. 硅酸盐学报, 2011, 39(9):1423-1427.
[21] IR图谱. 钼酸钙(7789-82-4)[DB/OL]. http://www.chemicalbook. com/ Spectrum_7789-82-4_IR1.htm.

湿法工艺回收板式SCR废弃催化剂中的钛、钒、钼

Recovery of waste SCR catalyst from titanium, vanadium and molybdenum by wet method

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