Production technology of high-quality trimellitic anhydride

兰宇卫 吴方国 陆建平 童张法

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Production technology of high-quality trimellitic anhydride

更新时间：2025-12-10

- Production technology of high-quality trimellitic anhydride
- CIESC Journal Issue 2, (2007)
- 作者机构：
  
  广西大学化学化工学院
- 作者简介：
- 基金信息：
- DOI：
  CLC：
- Online First：05 February 2007，
  
  Published：05 February 2007
- 稿件说明：
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兰宇卫吴方国陆建平童张法. Production technology of high-quality trimellitic anhydride[J]. CIESC Journal, 2007, (2).
DOI：

兰宇卫吴方国陆建平童张法. Production technology of high-quality trimellitic anhydride[J]. CIESC Journal, 2007, (2). DOI：

摘要

开发了液相空气氧化法由偏三甲苯制备优质偏苯三酸酐的生产工艺。该工艺增加了脱水提浓柱使偏三甲苯氧化反应在最佳条件下进行，通过使用工频电磁感应双向加热器和纳米过滤器，减少了副反应和除去了粗偏苯三酸酐中不溶性杂质，生产出了纯度大于99％的结晶型偏苯三酸酐。该工艺可降低产品单耗，提高产品质量，减少环境污染，基本实现了清洁生产。

Abstract

A new production technology of high-quality trimellitic anhydride with the liquid-phase air-oxidation from [BF]1

4-[BFQ]trimethylbenzene was developedA dehydration column evaporator was used in the process for guaranteeing an optimized experimental condition for 1

4-trimethylbenzene oxidationA high quality crystalline trimellitic anhydride with more than 99% purity was obtained by the use of a new electromagnetic frequency inductively coupled bidirectional heater and a nano-filter in the process

resulting in the reduction of side reactions and elimination of insoluble impuritiesThe merits of low unit consumption

high quality product and less environmental pollution demonstrate its potential application to non-hazardous and environmental friendly production.

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