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公开(公告)号：KR1020020068205A
公开(公告)日：2002-08-27
申请号：KR1020010008495
申请日：2001-02-20
Applicant: 한국과학기술연구원
IPC: C07C23/06
CPC classification number: C07C23/06 , C07C17/269 , C07C17/281 , C07C21/185
Abstract: PURPOSE: A method for preparing hexafluoropropylene and peroctafluorocyclobutane simultaneously and selectively is provided, by inhibiting the production of solid polymer and carbon and controlling the reaction temperature. CONSTITUTION: The method comprises the step of supplying tetrafluoroethylene prepared by the pyrolysis of difluorochloromethane and H2O in the molar ratio of 0.1-10 into a flow layer reactor equipped with a distributor for steam supply, to allow the dimerization of tetrafluoroethylene to be carried out. Tetrafluoroethylene is prepared at the difluorochloromethane pyrolysis device comprising a preheater(2), a super heating unit(4), a cooler and a tetrafluoroethylene distillation tower(12); is purified at the distillation tower after passing a HCl absorption tower(8), a NaOH column(9) and a dryer(10); and is supplied into the flow layer reactor from the center of the distillation tower. Preferably the reaction temperature of the dimerization of tetrafluoroethylene is 600-780 deg.C.
Abstract translation: 目的：通过抑制固体聚合物和碳的产生并控制反应温度，提供同时和选择性制备六氟丙烯和全氟代氟环丁烷的方法。 方案：该方法包括将通过二氯氯甲烷和H 2 O的摩尔比为0.1-10的热解制备的四氟乙烯加入到装有用于蒸汽供应的分配器的流动层反应器中以允许进行四氟乙烯的二聚化的步骤。 在包括预热器（2），超加热单元（4），冷却器和四氟乙烯蒸馏塔（12）的二氟氯甲烷热解装置中制备四氟乙烯。 在通过HCl吸收塔（8），NaOH柱（9）和干燥器（10）之后在蒸馏塔处纯化; 并从蒸馏塔的中心供给流层反应器。 优选四氟乙烯的二聚反应温度为600-780℃。
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公开(公告)号：KR1020010073629A
公开(公告)日：2001-08-01
申请号：KR1020000002395
申请日：2000-01-19
Applicant: 한국과학기술연구원
IPC: C07C41/01
Abstract: PURPOSE: A method is provided which manufactures 2,2,2-trifluoroethyl difluoromethyl ether simply and in a high yield by reacting CF3CH2OH with CHCl3 and HF under the existence of a catalyst. CONSTITUTION: In a method for manufacturing 2,2,2-trifluoroethyl difluoromethyl ether, the method is characterized in that CF3CH2OH is reacted with CHCl3 and HF under the existence of a catalyst, that is, chlorides, fluorides or oxides of a metal selected from the group consisting of B, Sn, Ti, Al, Zn, and Ce, wherein an amount of the catalyst is 0.005 to 1 mole per one mole of trifluoroethanol, wherein an amount of CHCl3 is 1 to 10 moles per one mole of trifluoroethanol, wherein an amount of HF is 5 to 50 moles per one mole of trifluoroethanol, and wherein a temperature of the reaction is 100 to 200 deg.C.
Abstract translation: 目的：提供一种通过在催化剂存在下使CF 3 CH 2 OH与CHCl 3和HF反应而简单地且高产率地制备2,2,2-三氟乙基二氟甲基醚的方法。 构成：在制备2,2,2-三氟乙基二氟甲基醚的方法中，该方法的特征在于CF 3 CH 2 OH在催化剂存在下，即氯化物，氟化物或金属氧化物与CHCl 3和HF反应， 由B，Sn，Ti，Al，Zn和Ce组成的组，其中催化剂的量相对于每摩尔三氟乙醇为0.005〜1摩尔，其中CHCl 3的量为每摩尔三氟乙醇1至10摩尔， 其中HF的量相对于每摩尔三氟乙醇为5〜50摩尔，反应温度为100〜200℃。
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公开(公告)号：KR1020000004093A
公开(公告)日：2000-01-25
申请号：KR1019980025488
申请日：1998-06-30
Applicant: 한국과학기술연구원
IPC: C25B1/24
Abstract: PURPOSE: A fluorine manufacturing method is provided to prevent the explosive recombination of the fluorine and the hydrogen and to improve the fluorine manufacture efficiency. CONSTITUTION: The fluorine manufacturing method is formed by the steps of: electrolyzing the anhydrous fluoric acid by using the fused alkali metal fluoric acid compound as an electrolytic solution; and leading the electrolytic solution to naturally convert to a specific direction by installing a few louver-typed horizontal gap only on the upper area of the whole area of a cathode(2) and by using a plate on the lower area.
Abstract translation: 目的：提供氟制造方法以防止氟和氢的爆炸性复合并提高氟制造效率。 构成：氟制造方法通过以下步骤形成：使用熔融的碱金属氟酸化合物作为电解液来电解无水氟酸; 并且通过仅在阴极（2）的整个区域的上部区域上安装几个百叶窗型水平间隙并且通过在下部区域上使用板来引导电解液自然地转换成特定方向。
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公开(公告)号：KR100125120B1
公开(公告)日：1997-12-01
申请号：KR1019940015934
申请日：1994-07-04
Applicant: 한국과학기술연구원
IPC: C07C17/02
CPC classification number: C07C17/206 , C07C17/21 , Y02P20/582
Abstract: A process for producing HFC compounds serially is characterized by a reaction system consisting two or more heterogeneous catalyst reactors, which are connected each other, so each reactor can use a different catalyst or a different temperature, and products of a reactor can be used as reactants of the next reactor. Said process consists of supplying two or more different halogenated carbon or halogenated hydrocarbon compounds with HF to the first reactor to produce different HFC compounds, followed by supplying said compounds to the next reactors.
Abstract translation: 连续生产HFC化合物的方法的特征在于由两个或更多个非均相催化剂反应器组成的反应体系，它们彼此连接，因此每个反应器可以使用不同的催化剂或不同的温度，反应器的产物可以用作反应物 的下一个反应堆。 所述方法包括向第一反应器提供两种或多种不同的卤化碳或卤代烃化合物与HF，以产生不同的HFC化合物，然后将所述化合物供应到下一个反应器。
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Patent Agency Ranking
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公开(公告)号：KR1019950017882A
公开(公告)日：1995-07-20
申请号：KR1019930026520
申请日：1993-12-04
Applicant: 한국과학기술연구원
IPC: C07C19/08
Abstract: 본 발명은 HFC-134a 혼합물에서 HCFC-l33a는 분리하여 반응공정에 순환시키고, 분리 공정에서 문제가 되는, HF와 기타 성분과의 공비화합물 형성을 방지하기 위하여 미리 HF를 제거한 후 통상적인 증류방법에 의해 용이하게 각 성분을 분리하는 것으로 이루어지는, 순수한 HFC-134a를 제조하는 방법에 관한 것이다.
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公开(公告)号：KR1019940002205A
公开(公告)日：1994-02-16
申请号：KR1019920012605
申请日：1992-07-15
Applicant: 한국과학기술연구원
IPC: C07C19/08
Abstract: 본 발명은 1,1,1-트리클로로에탄과 불화수소를 무촉매 반응시켜 1,1-디클로로플루오로에탄(HCFC 141b)과 1-클로로-1,1-디플루오로에탄(HCFC 142b)를 제조함에 있어서, 전환율이 높고 반응생성물인 HCFC 141b및 HCFC 142b의 선택성을 높여줄 수 있는 HCFC-141b 및 HCFC-142b의 제조방법에 관한 것이다.
본 발명은 불화수소와 1,1,1-트리클로로에탄에 대한 용해도가 큰 반응행성물중의 하나인 HCFC-142b를 반응공정중에서 1,1,1-트리클로로에탄에 대해 20 mole% 이상 유지시켜 주므로서 유기층에 대한 불화수소의 용해도를 즈대시켜주고 1,1,1-트리클로로에탄 또는 비닐리덴클로라이드와 불화수소간의 반응을 촉진시켜 주는 동시에 염화수소 및 저비점 클로로플루오로 카본류를 제외한 반응혼합물을 반응기 하부로 부터 연속적으로 취출하여 생성물 분리후 재순환시켜 반응물의 반응기내 체류시간을 단축하므로서 타르의 생성을 방지시켜 줄 수 있도록 한 것이다. -
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