| 对苯二甲酸精制工艺 |
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| 引用本文： | 徐世昌,罗其明,刘会武,范振鲁,王纪孝.对苯二甲酸精制工艺[J].化学工业与工程,2007,24(6):513-516. |
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| 作者姓名： | 徐世昌 罗其明 刘会武 范振鲁 王纪孝 |
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| 作者单位： | 天津大学化学工程研究所,天津,300072;天津大学化学工程研究所,天津,300072;天津大学化学工程研究所,天津,300072;天津大学化学工程研究所,天津,300072;天津大学化学工程研究所,天津,300072 |
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| 摘 要： | 对粗对苯二甲酸精制工艺进行了研究.探索了固相吸附法和溶解-沉淀法提纯粗对苯二甲酸的工艺可行性,固相吸附法重点考察了聚氨酯、弱酸性阳离子交换树脂及其化学改性物对杂质对羧基苯甲醛的吸附性能;以亚硫酸钠盐水溶液为溶解试剂,以SO2为沉淀析出试剂,考察了溶解-沉淀法不同操作条件对提纯效果的影响.确定了利用溶解-沉淀法精制可得到聚合级对苯二甲酸并给出了适宜的工艺参数.
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| 关 键 词： | 对苯二甲酸 精制 溶解-沉淀 吸附 |
| 文章编号： | 1004-9533（2007）06-0513-04 |
| 收稿时间： | 2006-07-19 |
| 修稿时间： | 2006年7月19日 |
Purification Process of Terephthalic Acid |
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| XU Shi-chang,LUO Qi-ming,LIU Hui-wu,FAN Zhen-lu,Wang Ji-xiao.Purification Process of Terephthalic Acid[J].Chemical Industry and Engineering,2007,24(6):513-516. |
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| Authors: | XU Shi-chang LUO Qi-ming LIU Hui-wu FAN Zhen-lu Wang Ji-xiao |
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| Affiliation: | Institute of Chemical Engineering and Technology, Tianjin University, Tianjin 300072, China |
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| Abstract: | New methods for purification of crude terephthalic acid(CTA) were studied.The proposed purification strategies were adsorption,dissolving and precipitating process.The tested adsorbents included polyurethane,weak acid cation exchange resin as well as their chemical modified substances.Sodium sulfite solution was used as dissolving reagent and sulphur dioxide was used as precipitant.The effects of operating parameters on the purity of purified terephthalic acid(PTA) were discussed. |
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| Keywords: | terephthalic acid purification dissolving and precipitating adsorption |
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