摘要
A new production technology of high-quality trimellitic anhydride with the liquid-phase air-oxidation from 1,2,4-trimethylbenzene was developed.A dehydration column evaporator was used in the process for guaranteeing an optimized experimental condition for 1,2,4-trimethylbenzene oxidation.A 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 impurities.The merits of low unit consumption, high quality product and less environmental pollution demonstrate its potential application to non-hazardous and environmental friendly production.
A new production technology of high-quality trimellitic anhydride with the liquid-phase airoxidation from 1,2,4-trimethylbenzene was developed. A dehydration column evaporator was used in the process for guaranteeing an optimized experimental condition for 1,2,4-trimethylbenzene oxidation. A 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 impurities. The merits of low unit consumption, high quality product and less environmental pollution demonstrate its potential application to non-hazardous and environmental friendly production.
出处
《化工学报》
EI
CAS
CSCD
北大核心
2007年第2期526-529,共4页
CIESC Journal
关键词
偏苯三酸酐
偏三甲苯
单耗
清洁生产
trimellitic anhydride
1,2,4-trimethylbenzene
unit consumption
clean production
