摘要介绍了生产对苯二甲酸时产生的灰分的成分，分析了灰分形成的可能机理，叙述了灰分生成的影响因素，对除去灰分的5种措施作了评述。

• Ingredients of ash during the production of terephthalic acid are introduced, possible ash-forming mechanism is analyzed, affecting factors on ash-forming is reviewed, various measures for ash removal are commented.