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公开(公告)号：KR100837781B1
公开(公告)日：2008-06-13
申请号：KR1020070037480
申请日：2007-04-17
Applicant: 충남대학교산학협력단
IPC: C07C51/09 , C07C51/487
Abstract: An apparatus for regenerating the polyester waste, and a method for regenerating the polyester waste are provided to obtain dimethyl terephthalate and ethylene glycol with increasing reaction velocity and reducing the amount of required methanol. An apparatus for regenerating the polyester waste comprises a raw material supply hopper(10); a high pressure batch first reactor(100) where the glycolysis and methanolysis are carried out by using the raw material supplied from the raw material supply hopper; a condenser(40) which condenses the vapor material after the reaction of the first reactor is terminated; a low temperature continuous second reactor(200) which is connected with the first reactor and the transfer pipe(70a) and where the methanolysis is carried out by using the product of the first reactor; and a methanol storage bath(30) which supplies methanol to the first reactor and the second reactor.
Abstract translation: 提供一种再生聚酯废料的装置，以及一种再生聚酯废料的方法，以提高反应速度和减少所需甲醇的量来获得对苯二甲酸二甲酯和乙二醇。 用于再生聚酯废料的装置包括原料供给料斗（10）; 高压分批第一反应器（100），其中通过使用从原料供给料斗供给的原料进行糖酵解和甲醇分解; 在第一反应器的反应之后冷凝蒸汽材料的冷凝器（40）终止; 与第一反应器和输送管（70a）连接的低温连续第二反应器（200），并且其中通过使用第一反应器的产物进行甲醇分解; 和向第一反应器和第二反应器供应甲醇的甲醇储存浴（30）。
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2.发明公开
公开(公告)号：KR1020040099970A
公开(公告)日：2004-12-02
申请号：KR1020030032139
申请日：2003-05-21
Applicant: 충남대학교산학협력단
IPC: C07B41/08
CPC classification number: C07B63/00
Abstract: PURPOSE: An apparatus and an operation method thereof are provided to produce dimethyl terephthalate(DMT) and ethylene glycol(EG) as raw materials of a polyester from a waste polyester oligomer sludge by using a composite methanolysis-distillation apparatus. The composite apparatus dose not precipitate DMT when distilling. CONSTITUTION: The composite methanolysis-distillation apparatus(20) places a distillation device(22) on a methanolysis device(21) continuously, wherein the distillation device(22) contains a distillation part(5), a liquid dispersing device(7), and a partial condenser(11) and the methanolysis device(21) contains oligomer sludge supply devices(1, 3), methanol supply devices(2, 9), a gas dispersing device(10), and a liquid dispersing device(7). The oligomer sludge reacts with methanol gas in the methanolysis device(21) and the gas phase product disperses and enters the lower part of the distillation device(22) from the upper part of the methanolysis device(21). And condensed liquid phase DMT, EG, and methanol drop to the upper part of the methanolysis device(21) from the lower part of the distillation device(22). Methanol gas is discharged to the upper part of the distillation device(22) and is circulated. The reaction temperature of the methanolysis device is 200-300deg.C and the reaction pressure is 2-5bar.
Abstract translation: 目的：提供一种装置及其操作方法，通过使用复合甲醇分解装置从废聚酯低聚物污泥制备作为聚酯原料的对苯二甲酸二甲酯（DMT）和乙二醇（EG）。 复合装置在蒸馏时不会使DMT沉淀。 构成：复合甲醇分解装置（20）将蒸馏装置（22）连续地放置在甲醇分解装置（21）上，其中蒸馏装置（22）含有蒸馏部分（5），液体分散装置（7） 和部分冷凝器（11）和甲醇分解装置（21）包含低聚物污泥供应装置（1,3），甲醇供应装置（2,9），气体分散装置（10）和液体分散装置（7） 。 低聚物污泥在甲醇分解装置（21）中与甲醇气体反应，气相产物从甲醇分解装置（21）的上部分散并进入蒸馏装置（22）的下部。 并且冷凝液相DMT，EG和甲醇从蒸馏装置（22）的下部滴落到甲醇分解装置（21）的上部。 甲醇气体排出到蒸馏装置（22）的上部并循环。 甲醇分解装置的反应温度为200-300℃，反应压力为2-5bar。
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公开(公告)号：KR100846316B1
公开(公告)日：2008-07-15
申请号：KR1020070037549
申请日：2007-04-17
Applicant: 충남대학교산학협력단
Abstract: An apparatus for separating dimethylterephthalate from polyester methanolysis gas is provided to simplify a partial condenser and a spray tower or spray zone, and to save energy by using the heat of methanolysis gas as distillation energy. An apparatus for separating dimethylterephthalate from methanolysis gas comprising dimethylterephthalate, methyl-2-hydroxyethylterephthalate, ethyleneglycol, and methanol as depolymerization products of polyethyleneterephthalate includes: a liquid storage tank(10) in which an inflow of methanolysis gas is condensed; a methanol distillation column(20) provided in the upper part of the liquid storage tank; an ethyleneglycol distillation column(30) provided in the lower part of the liquid storage tank; and a dimethylterephthalate storage tank(40) provided in the lower part of the ethyleneglycol distillation column.
Abstract translation: 提供了一种用于从聚酯甲醇分解气体分离对苯二甲酸二甲酯的设备，以简化部分冷凝器和喷雾塔或喷雾区，并通过使用甲醇分解气体的热量作为蒸馏能来节约能源。 一种从甲醇分解气体中分离甲基对苯二甲酸酯的装置，包括对苯二甲酸二甲酯，甲基-2-羟乙基对苯二甲酸酯，乙二醇和甲醇作为聚对苯二甲酸乙二醇酯的解聚产物包括：甲烷分解气体的流入被冷凝的储液罐（10） 设置在液体储罐的上部的甲醇蒸馏塔（20）; 设置在液体储罐的下部的乙二醇蒸馏塔（30） 和设置在乙二醇蒸馏塔下部的二甲基对苯二甲酸酯储罐（40）。
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Patent Agency Ranking
公开(公告)号：KR101099009B1
公开(公告)日：2011-12-28
申请号：KR1020090096032
申请日：2009-10-09
Applicant: 충남대학교산학협력단
Inventor： 한명완
CPC classification number: C08J11/24 , C07C29/80 , C07C67/03 , C07C67/52 , C08J2367/02 , Y02W30/706 , C07C69/82 , C07C31/04
Abstract: The present invention relates to a process for recycling feedstock from polyester wastes and an apparatus using the same, and more particularly, to a process for recycling dimethyl terephthalate and ethylene glycol or feedstock for polyester from polyethyleneterephthalate (PET) and an apparatus using the same. More particularly, the present invention relates to a novel continuous recycling process for improving a process efficiency and energy saving effect through recycling of produced methanol vapor and crystallization of dimethyl terephthalate.
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公开(公告)号：KR100539286B1
公开(公告)日：2005-12-28
申请号：KR1020030032142
申请日：2003-05-21
Applicant: 충남대학교산학협력단
IPC: C07B41/08
Abstract: 본 발명은 PET(폴리에스터) 올리고머를 메탄올리시스하여 폴리에스터 원료물질인 DMT와 EG로 원료화하는 반응공정과 그 운전 방법에 관한 것으로 구체적으로 순환형 기포 반응기를 사용하는 것이다.
본 발명에 의하면, 슬러지 액체의 흐름이 메탄올 기포와 반대방향으로 흐르도록 하여 기포의 상승속도를 감소시켜 메탄올 기포의 반응기 체류시간을 증가시키며 또한 메탄올 기포와 슬러지 액체간의 접촉효율을 증가시키게 된다.
본 발명에 의한 반응장치에 의해 메탄올 기포의 체류시간 및 체류량이 증가하게 되어 반응전환율이 종래 반응장치에 비해 현저하게 증가된다.-
公开(公告)号：KR1020110038860A
公开(公告)日：2011-04-15
申请号：KR1020090096032
申请日：2009-10-09
Applicant: 충남대학교산학협력단
Inventor： 한명완
CPC classification number: C08J11/24 , C07C29/80 , C07C67/03 , C07C67/52 , C08J2367/02 , Y02W30/706 , C07C69/82 , C07C31/04
Abstract: PURPOSE: A method and an apparatus for regenerating polyester wastes are provided to reduce energy cost by repeating a vaporizing process and a liquefying process in order to circulate methanol. CONSTITUTION: A raw material supplying unit(10) is prepared. Glycolysis reaction and methanolysis reaction are generated in a first reactor(100) using a raw material from the raw material supplying unit. The methanolysis reaction is implemented with respect to the result of the first reactor in a second reactor(200). Methanol is separated from gas discharged from the upper side of the second reactor. The methanol is re-circulated in the second reactor through a rectifying tower(300).
Abstract translation: 目的：提供一种用于再生聚酯废物的方法和设备，以通过重复蒸发过程和液化过程以使甲醇循环来降低能量成本。 构成：准备原料供给单元（10）。 在第一反应器（100）中使用来自原料供给单元的原料产生糖解反应和甲醇分解反应。 相对于第二反应器（200）中的第一反应器的结果实施甲醇分解反应。 甲醇与从第二反应器的上侧排出的气体分离。 甲醇通过精馏塔（300）在第二反应器中再循环。
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公开(公告)号：KR100539285B1
公开(公告)日：2005-12-28
申请号：KR1020030032139
申请日：2003-05-21
Applicant: 충남대학교산학협력단
IPC: C07B41/08
Abstract: 본 발명은 PET(폴리에스터) 올리고머를 메탄올리시스하여, 분리 정제하여 폴리에스터 제조원료인 순수한 디메틸테레프탈레이트(DMT)를 얻는 새로운 방법에 관한 것이다.
본 발명에서는 메탄올리시스 반응기와 증류탑을 일체화시키고 공정의 압력을 전공정에서 DMT의 응고점 이상으로 유지시켜서 공정의 단순화와 DMT의 막힘문제로 인한 조업상의 문제점을 해결한다.
본 발명에 의한 복합장치에 의하면, 증류 작업 중 DMT가 석출되지 않아 조업의 안정성을 높이고, 반응 전환율을 최대화할 수 있기 때문에 반응 수율 및 분리 효율을 높이고 에너지 절약이 가능하게 된다.-
公开(公告)号：KR1020040099973A
公开(公告)日：2004-12-02
申请号：KR1020030032142
申请日：2003-05-21
Applicant: 충남대학교산학협력단
IPC: C07B41/08
CPC classification number: C07B63/00
Abstract: PURPOSE: An apparatus and an operation method thereof are provided to produce dimethyl terephthalate(DMT) and ethylene glycol(EG) as raw materials of a polyester from a polyester oligomer by a methanolysis using a circulation type bubble reactor. The apparatus increases a fractional conversion of the reaction remarkably. CONSTITUTION: The apparatus(9) contains an oligomer sludge supply device, a methanol supply device, and a stirring device(8), wherein a partition(7) is formed in the apparatus(9) on the same axis as the outer wall of the apparatus(9) and a methanol gas dispersing device(6) of the methanol supply device is mounted in the lower part of the partition(7). The stirring device(8) makes the oligomer sludge flow downward in the partition(7), therefore the oligomer sludge flows in the opposite direction to methanol bubbles in the partition(7). The oligomer sludge flows downward inside the partition(7) and flows upward outside the partition(7). And the partition(7) and the methanol gas dispersing device(6) can be mounted repeatedly in the vertical direction.
Abstract translation: 目的：提供一种装置及其操作方法，通过使用循环型气泡反应器通过甲醇分解从聚酯低聚物制备作为聚酯的聚酯的原料的对苯二甲酸二甲酯（DMT）和乙二醇（EG）。 该装置显着增加反应的分数转化率。 方案：装置（9）包含低聚物污泥供应装置，甲醇供应装置和搅拌装置（8），其中在装置（9）中在与外壁相同的轴上形成隔板（7） 装置（9）和甲醇供给装置的甲醇气体分散装置（6）安装在隔板（7）的下部。 搅拌装置（8）使得低分子污泥在分隔件（7）中向下流动，因此低聚物污泥在与隔板（7）中的甲醇气泡相反的方向上流动。 低聚物污泥在隔板（7）的内部向下流动，并向上流动到隔板（7）的外面。 分隔件（7）和甲醇气体分散装置（6）可以沿垂直方向重复安装。
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