Utilizing organic acids for V<sub>2</sub>O<sub>5</sub> recovery from denitration catalyst alkaline inactivation

CHEN Fengqiao; CUI Chang; QI Liqiang

doi:10.11949/j.issn.0438-1157.20170653

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Utilizing organic acids for V₂O₅ recovery from denitration catalyst alkaline inactivation

更新时间：2025-12-10

- Utilizing organic acids for V₂O₅ recovery from denitration catalyst alkaline inactivation
- CIESC Journal Issue 12, Pages: 4717-4722(2017)
- 作者机构：
  
  华北电力大学环境科学与工程系,河北,保定,071003
- 作者简介：
- 基金信息：
- DOI：10.11949/j.issn.0438-1157.20170653
  CLC： 7
- Online First：05 December 2017，
  
  Published：05 December 2017
- 稿件说明：
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CHEN Fengqiao, CUI Chang, QI Liqiang. Utilizing organic acids for V₂O₅ recovery from denitration catalyst alkaline inactivation[J]. CIESC Journal, 2017, (12): 4717-4722. DOI: 10.11949/j.issn.0438-1157.20170653.
DOI：

CHEN Fengqiao, CUI Chang, QI Liqiang. Utilizing organic acids for V₂O₅ recovery from denitration catalyst alkaline inactivation[J]. CIESC Journal, 2017, (12): 4717-4722. DOI: 10.11949/j.issn.0438-1157.20170653. DOI：

摘要

选择性催化还原法（SCR）是目前燃煤电站脱除氮氧化物最有效的方法之一。催化剂是SCR脱硝技术的核心物质，它的性能直接影响着SCR系统的整体脱销效果。随着运行时间的增加，具有危害性的失活催化剂的数量也与日俱增。五氧化二钒作为催化剂中的主要活性成分，有必要对其进行回收。选取柠檬酸、酒石酸和草酸3种还原性有机酸对废旧催化剂中的V2O5进行回收优选实验，并使用X射线荧光光谱仪（XRF）对催化剂样品进行回收效果分析。结果表明，酸性较强的草酸还原性也强，为回收V2O5提供了强酸环境，回收实验流程简化，不需要添加任何药剂辅助回收，经济高效。

Abstract

Currently

selective catalytic reduction (SCR) denitrification technology is the most effective technique to control emissions of nitrogen oxides from coal-fired power plants and it is widely utilized. The SCR catalyst is the core of SCR denitrification technology

which often encounters inactivation problems. The amount of harmful inactivated SCR catalyst is increasing with the increase in operation time of these power plants. V2O5 is the main active ingredient in the deactivated catalyst

and needs to be recovered. Three reducible organic acids

citric acid

tartaric acid

and oxalic acid were chosen to create an optimal experiment for recovery V2O5 from deactivated catalyst

and X-ray fluorescence was used to analyse the recovery result. The results demonstrated that oxalic acid has high acidity and strong reducibility

which provides a stronger acid environment for recovery V2O5 in the experiment. The oxalic acid recycling method only to control the reaction conditions

and no agent is needed to assist the recovery process. The experiment processes of oxalic acid simplify recovery method and are cost-effective.

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Utilizing organic acids for V2O5 recovery from denitration catalyst alkaline inactivation

DOI：10.11949/j.issn.0438-1157.20170653

摘要

Abstract

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Utilizing organic acids for V₂O₅ recovery from denitration catalyst alkaline inactivation