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1.发明授权Method for recovery of alkali metal or alkaline-earth metal terephthalate and of alkylene glycol from polyethylene terephthalates 失效从聚对苯二甲酸乙二醇酯中回收碱金属或碱土金属对苯二甲酸盐和亚烷基二醇的方法
公开(公告)号：US5545746A
公开(公告)日：1996-08-13
申请号：US367859
申请日：1995-01-03
Applicant: Jacques Benzaria , Francois Dawans , Bruno Durif-Varambon , Jean-Bernard Gaillard
Inventor： Jacques Benzaria , Francois Dawans , Bruno Durif-Varambon , Jean-Bernard Gaillard
CPC classification number: C07C51/09 , C07C29/095 , C07C51/41
Abstract: An improved method for recovery of alkali metal or alkaline-earth metal terephthalate and of alkylene glycol, from polyalkylene terephthalate, in particular from polyethylene terephthalate (P.E.T.), alkylene glycol, in particular ethylene glycol produced in the form of vapor during the saponification reaction, initiated by the action of intensive kneading of polyalkylene terephthalate and the alkaline reagent at a temperature of 100.degree. to 200.degree. C. The alkylene glycol is recovered in gaseous form by entrainment by an inert gas or by extraction under low pressure. The alkaline terephthalate or alkaline-earth terephthalate is obtained in solid or powder form; it can easily be stored, transported and redissolved, in order to be purified and possibly transformed into terephthalic acid or ester.
Abstract translation: 聚对苯二甲酸亚烷基酯，特别是聚对苯二甲酸乙二醇酯（PET），亚烷基二醇，尤其是在皂化反应过程中以蒸汽形式生产的乙二醇，回收碱金属或碱土金属对苯二甲酸酯和亚烷基二醇的改进方法， 由聚对苯二甲酸亚烷基酯和碱性试剂在100至200℃的温度下强烈捏合的作用引发。亚烷基二醇通过惰性气体的夹带或低压萃取而以气态回收。 碱性对苯二甲酸酯或碱土类对苯二甲酸酯以固体或粉末形式获得; 它可以容易地储存，运输和重新溶解，以便被纯化并可能转化成对苯二甲酸或酯。
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2.发明授权Process for production of alkaline or alkaline-earth metal terephthalate or of terephthalic acid, of high purity, from polyol polyterephthalate and in particular from waste of an ethylene gylcol polyterephthalate 失效生产高纯度碱土金属或碱土金属对苯二甲酸酯或对苯二甲酸的方法，来自多元醇聚对苯二甲酸酯，特别是废乙醇聚对苯二甲酸乙二醇酯
公开(公告)号：US5254666A
公开(公告)日：1993-10-19
申请号：US827050
申请日：1992-01-29
Applicant: Jacques Benzaria
Inventor： Jacques Benzaria
CPC classification number: C07C51/412 , C07C51/09 , C08J11/16 , C08J2367/02 , Y02W30/705
Abstract: Production of alkali metal or alkaline-earth metal terephthalate by reaction of an alkali metal or alkaline-earth metal hydroxide with a polyol polyterephthalate, and optional conversion of the terephthalate into terephthalic acid.The reaction is performed without addition of water or in the presence of an amount of water representing at most, by weight, the amount of polyterephthalate.The invention is useful for the treatment of polyol polyterephthalate waste.
Abstract translation: 通过碱金属或碱土金属氢氧化物与多元醇聚对苯二甲酸酯的反应制备碱金属或碱土金属对苯二甲酸酯，以及将对苯二甲酸酯任选转化成对苯二甲酸。 该反应是在没有添加水的情况下进行的，或者在存在至多以重量计的聚对苯二甲酸酯的量的水的存在下进行。 本发明可用于处理多元醇聚对苯二甲酸废物。
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3.发明授权Method of adsorption by activated charcoal in a lower fluidized bed and upper fixed bed 失效活性炭在下流化床和上固定床中吸附的方法
公开(公告)号：US4086162A
公开(公告)日：1978-04-25
申请号：US696261
申请日：1976-06-16
Applicant: Jacques Benzaria
Inventor： Jacques Benzaria
Abstract: The improved adsorption device comprises two superposed beds of solid adsorbent in which, during the adsorption step, the times of flow of fluid phase to be passed through the first or lower bed fluidized or semi-fluidized and the second or upper bed fixed or expanded are respectively in an approximate ratio of 1:10, the sections of said first and second beds (e.g.) of substantially cylindrical shape) being in a ratio of about 1:10.
Abstract translation: 改进的吸附装置包括固体吸附剂的两个重叠床，其中在吸附步骤期间，要通过流化或半流化的第一床或下床的流体相的流动时间和固定或膨胀的第二床或上床 大致比例为1:10，所述第一和第二床（例如基本上为圆柱形的部分）的比例约为1:10。
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