RECOVERY OF TITANIUM, VANADIUM AND TUNGSTEN FROM WASTE SCR DENITRATION CATALYST BY DRY-WET PROCESS

TENG Yu-ting; ZHANG Ya-ping; WANG Ling; WU Peng

doi:10.13205/j.hjgc.202011027

Volume 38 Issue 11

Apr. 2021

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Article Navigation > ENVIRONMENTAL ENGINEERING > 2020 > 38(11): 163-167,174

TENG Yu-ting, ZHANG Ya-ping, WANG Ling, WU Peng. RECOVERY OF TITANIUM, VANADIUM AND TUNGSTEN FROM WASTE SCR DENITRATION CATALYST BY DRY-WET PROCESS[J]. ENVIRONMENTAL ENGINEERING , 2020, 38(11): 163-167,174. doi: 10.13205/j.hjgc.202011027

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TENG Yu-ting, ZHANG Ya-ping, WANG Ling, WU Peng. RECOVERY OF TITANIUM, VANADIUM AND TUNGSTEN FROM WASTE SCR DENITRATION CATALYST BY DRY-WET PROCESS[J]. ENVIRONMENTAL ENGINEERING , 2020, 38(11): 163-167,174. doi: 10.13205/j.hjgc.202011027

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RECOVERY OF TITANIUM, VANADIUM AND TUNGSTEN FROM WASTE SCR DENITRATION CATALYST BY DRY-WET PROCESS

doi: 10.13205/j.hjgc.202011027

Key Laboratory for Energy Thermal Conversion and Control of Ministry of Education, School of Energy and Environment, Southeast University, Nanjing 210096, China

Received Date: 2019-11-04
Available Online: 2021-04-23
Publish Date: 2021-04-23

Abstract

Abstract

In this paper, the efficient separation and leaching of Ti, V and W elements in the waste SCR denitration catalyst were carried out by the dry-wet method, and the recovery technology of Ti, V and W in the waste SCR denitration catalyst was proposed. Taking waste SCR denitration catalyst as the research object, the leaching conditions of Ti, V and W elements were optimized, and the recovery rate and purity of TiO₂ recovered by sulfuric acid dissolution method and V₂O₅ and WO₃ recovered by organic extraction method were also researched. The results showed that the optimal process conditions for acid leaching and reduction of vanadium were temperature of 140 ℃, liquid-solid ratio of 30:1; and the optimal process conditions for sodium roasting and leaching of tungsten were roasting temperature of 750 ℃, reactants and Na₂CO₃ ratio of 1:1.5. Under the above reaction conditions, the leaching rates of V and W were 97.6% and 93.6%, respectively. The TiO₂ product recovered by the sulfuric acid dissolution method mainly existed in the form of anatase crystal. At the optimum roasting temperature of 750 ℃, the recovery rate of TiO₂ was 97.17% and the purity rate was 95.35%. The recovery and purity rate of the V₂O₅ and WO₃ products recovered by the organic extraction method were 72.47%, 75.43%, and 93.25%, 78.26%, respectively.
- waste SCR denitration catalyst,
- leaching,
- recovery,
- titanium,
- vanadium,
- tungsten

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References

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.

喻小伟,周瑜,刘帅, 等. SCR脱硝催化剂失活原因分析及再生处理[J]. 热力发电, 2014, 43(2):109-113.

LEE J B, EOM Y S, KIM J H, et al. Regeneration of waste SCR catalyst by air lift loop reactor[J]. Journal of Central South University, 2013, 20(5):1314-1318.

赵炜, 于爱华, 王虎, 等. 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(7):2039-2042.

火电厂脱硝催化剂报废高峰将至回收再利用势在必行[J].技术与市场, 2018, 25(10):4.

余岳溪, 廖永进, 李娟, 等. 废弃SCR脱硝催化剂无害化处理的研究进展[J]. 环境工程, 2016, 34(6):136-139.

CHIENG H I, ZEHRA T, LIM L B L, et al. Sorption characteristics of peat of Brunei Darussalam Ⅳ:equilibrium, thermodynamics and kinetics of adsorption of methylene blue and malachite green dyes from aqueous solution[J]. Environmental Earth Sciences, 2014, 72(7):2263-2277.

黄力, 王虎, 李倩, 等. V₂O₅-WO₃/TiO₂脱硝催化剂回收研究进展[J]. 中国资源综合利用, 2016, 34(4):34-37.

林德海, 宋宝华, 王中原. 废弃SCR脱硝催化剂资源回收[J]. 山东化工, 2013, 42(4):8-10.

HE K B, YANG F M, MA Y L, et al. The characteristics of PM_2.5 in Beijing, China[J]. Atmosph eric Environment, 2001, 35(29):4959-4970.

刘海沛. 废弃钒钛脱硝催化剂资源化利用研究[D]. 南京:南京工业大学, 2016.

KIM J W, LEE W G, HWANG I S, et al. Recovery of tungsten from spent selective catalytic reduction catalysts by pressure leaching[J]. Journal of Industrial and Engineering Chemistry, 2015, 28:73-77.

KIM H R, LEE J Y, KIM J S. Leaching of vanadium and tungsten from spent SCR catalysts for de-NO_x by soda roasting and water leaching method[J]. Journal of the Korean Institute of Resources Recycling, 2012, 21(6):65-73.

ZHAO Z P, GUO M, ZHANG M. Extraction of molybdenum and vanadium from the spent diesel exhaust catalyst by ammonia leaching method[J]. Journal of Hazardous Materials, 2015, 286:402-409.

李力成, 王磊, 赵学娟, 等. 几种酸在废弃脱硝催化剂中提钒效果的比较[J].中国有色金属学报, 2016, 26(10):2230-2237.

张兵兵,于丹丹,王芳,等.废脱硝催化剂中五氧化二钒回收工艺研究[J].河南科学, 2016,34(6):866-870.

罗建斌, 王勇利, 吕宏达, 等.一种从废弃SCR催化剂中提取钨、钛、钒的方法:中国,CN102936049A[P]. 2014-02-20.

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, CN103484678A[P]. 2014-01-01.

陈晨. 废弃SCR脱硝催化剂成分回收[D]. 北京:华北电力大学, 2016.

刘子林, 王宝冬, 马瑞新,等. 废SCR催化剂钠化焙烧回收钨和钒的机理探究[J]. 无机盐工业, 2016, 48(7):63-67.

符春林, 魏锡文. 二氧化钛晶型转变研究进展[J]. 涂料工业, 1999, 29(2):28-30.

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