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公开(公告)号：KR100447941B1
公开(公告)日：2004-09-08
申请号：KR1020010072627
申请日：2001-11-21
Applicant: 한국화학연구원
IPC: C30B29/14
Abstract: PURPOSE: A method for obtaining high purity phosphoric acid crystal to the maximum yield by efficiently removing about 24 types of heavy metal remained in phosphoric acid as impurities, and an apparatus for manufacturing the high purity phosphoric acid crystal are provided. CONSTITUTION: The apparatus comprises a crystal manufacturing unit (10) comprising a raw material phosphoric acid tank (11) for supplying phosphoric acid, and a crystallization tank (14) on the outer part of which a jacket (12) is formed, and in which a scraper (13) is installed so that an internal temperature is maintained to -70 to -30 deg.C using refrigerant circulating the external jacket (12), and phosphoric acid seed crystal is continuously manufactured by scraping crystal on the wall surface of the crystallization tank (14) using the scraper (13); a crystal aging unit (20) comprising refrigerant circulator (21) and temperature sensor (22) for temperature controlling, and an aging tank (24) in which a propeller impeller (23) is installed, and which receives phosphoric acid crystal so that the phosphoric acid crystal is aged for 10 to 40 minutes by cooling it to a temperature of 4 to 20 deg.C; and a crystal purifying unit (30) comprising a purifying tank (33) comprising a jacket (31) installed on the outer part of the purifying tank (33) to maintain temperature and a heater (32) installed inside the purifying tank (33) to melt crystal so that some of the crystal grains are refluxed while some of the crystal grains are taken as product by melting crystal grains precipitated into the bottom by gravity of the crystal grains.
Abstract translation: 目的：提供一种通过有效地除去作为杂质残留在磷酸中的约24种重金属以获得最高产率的高纯度磷酸晶体的方法以及一种用于制造高纯度磷酸晶体的设备。 本发明的装置包括：晶体制造单元（10），其包括用于供应磷酸的原料磷酸罐（11）和结晶罐（14），结晶罐的外部形成有夹套（12），并且在结晶罐 其中安装刮板（13），使得利用循环外部夹套（12）的制冷剂将内部温度保持在-70至-30℃，并且通过刮擦壁表面上的晶体连续制造磷酸晶种 使用刮刀（13）的结晶罐（14）; 包括用于温度控制的制冷剂循环器（21）和温度传感器（22）的晶体老化单元（20）以及其中安装有螺旋桨叶轮（23）的老化箱（24），并且其接收磷酸晶体， 通过将磷酸晶体冷却至4至20℃的温度来熟化10至40分钟; 和包括净化罐（33）的晶体净化单元（30），所述净化罐包括安装在净化罐（33）的外部以保持温度的外壳（31）和安装在净化罐（33）内的加热器（32） 通过晶粒的重力熔化结晶，使一些晶粒回流，同时使一些晶粒作为产物被熔化，从而通过熔化沉淀到底部的晶粒。
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公开(公告)号：KR1020040017506A
公开(公告)日：2004-02-27
申请号：KR1020020049581
申请日：2002-08-21
Applicant: 한국화학연구원
IPC: C07C17/38
Abstract: PURPOSE: Provided is a method for separating a gas mixture of hexafluoropropylene and chlorodifluoromethane using an imidazolium-based liquid having excellent absorption capability to chlorodifluoromethane with a high efficiency. CONSTITUTION: The method comprises the steps of: (a) introducing a gas mixture containing hexafluoropropylene(HFP) and chlorodifluoromethane(R22) into an imidazolium-based liquid to absorb R22 into the imidazolium-based ionic liquid; (b) separating the imidazolium-based ionic liquid in which R22 is absorbed from HFP; and (c) separating R22 from the imidazolium-based ionic liquid in which R22 is absorbed. Particularly, the imidazolium-based ionic liquid comprises 1-alkyl-3-methyl imidazolium cation and an inorganic anion.
Abstract translation: 目的：提供使用具有高效吸收能力的咪唑鎓系液体向六氟丙烯和氯二氟甲烷分离氯代二氟甲烷的方法。 方案：该方法包括以下步骤：（a）将含有六氟丙烯（HFP）和氯二氟甲烷（R22）的气体混合物引入到基于咪唑鎓的液体中以将R22吸收到基于咪唑鎓的离子液体中; （b）从HFP中分离其中R22被吸收的咪唑鎓离子液体; 和（c）从R 22被吸收的咪唑鎓离子液体中分离出R 22。 特别地，咪唑鎓离子液体包含1-烷基-3-甲基咪唑阳离子和无机阴离子。
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公开(公告)号：KR1020020085152A
公开(公告)日：2002-11-16
申请号：KR1020010024502
申请日：2001-05-07
Applicant: 한국화학연구원
Abstract: PURPOSE: A polytetrafluoroethylene water-dispersive substance and its preparation method are provided, which has a high concentration of 60-70% and a nano-size of 100-200 nm. CONSTITUTION: The method comprises the steps of emulsion polymerizing gaseous polytetrafluoroethylene monomer in the presence of purified water, a fluorine-based surfactant, an emulsion stabilizer and an initiator; mixing the obtained one with a mixture of a nonionic surfactant and an anionic surfactant by stirring at the same temperature with the emulsion polymerization; stopping the stirring and concentrating the mixture; separating polytetrafluoroethylene water-dispersive substance from the upper mixture layer of the purified water and the emulsion stabilizer; and drying the polytetrafluoroethylene water-dispersive substance.
Abstract translation: 目的：提供聚四氟乙烯水分散体及其制备方法，其浓度高达60-70％，纳米尺寸为100-200nm。 构成：该方法包括在纯水，氟系表面活性剂，乳化稳定剂和引发剂的存在下乳化聚合气态聚四氟乙烯单体的步骤; 在乳液聚合的同一温度下通过搅拌将得到的物质与非离子表面活性剂和阴离子表面活性剂的混合物混合; 停止搅拌并浓缩混合物; 从净化水和乳化稳定剂的上部混合物层分离聚四氟乙烯水分散体; 并干燥聚四氟乙烯水分散物质。
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公开(公告)号：KR100224471B1
公开(公告)日：1999-10-15
申请号：KR1019970040677
申请日：1997-08-25
Applicant: 한국화학연구원
IPC: C08J5/20
CPC classification number: B01D71/80 , B01D61/02 , B01D69/12 , B01D69/125 , C02F1/441
Abstract: 본 발명은 이중구조를 갖는 폴리이온콤플렉스 분리막에 관한 것으로서, 더욱 상세하게는 폐수로부터 음이온계 유화제와 같이 값비싼 이온성 유기물을 회수하기 위한 분리막을 제조하되, 기재로서 음이온 고분자를 사용하고, 이를 다가이온의 가교제가 첨가된 양이온 고분자 수용액에 침지시켜서 분리막 내부는 가교제에 의한 가교결합이 이루어지고, 분리막 표면은 상반된 이온성 고분자들간에 콤플렉스를 형성하여 이중구조의 안정한 분리막을 제조함으로써 이온성 분자 또는 입자들을 포함하는 수용성 혼합물을 역삼투압 막분리공정에 효과적으로 적용가능한 이중구조를 갖는 폴리이온콤플렉스 분리막에 관한 것이다.
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公开(公告)号：KR1019970015565A
公开(公告)日：1997-04-28
申请号：KR1019950030315
申请日：1995-09-16
Applicant: 한국화학연구원
IPC: C07C243/22
Abstract: 〔목적〕
복잡한 반응단계를 단순화시키고 수율을 향상시키고 폐수를 감소시키기 위한 방향족 페닐하이드라진의 제조방법이다.
〔구성〕
2, 4, 6-트리클로로 페닐하이드라진 합성에 있어서, 유기용매 존재하에서 아닐린을 반응단계의 출발물질로 사용하여 염소화반응 직후인 2, 4, 6-트리클로로 아닐린염산염의 슬러리 상태에서 TCA단계를 거치지 않고 곧바로 디아조화 반응을 시켜서 방향족 페닐하이드라진을 얻는다.-
Patent Agency Ranking
公开(公告)号：KR20210027985A
公开(公告)日：2021-03-11
申请号：KR20190109134
申请日：2019-09-03
Applicant: 한국화학연구원
Abstract: ZSM-5 제올라이트담체; 및상기담체에함침된니켈(Ni) 또는코발트(Co) 및몰리브덴(Mo)을포함하는촉매활성금속;을포함하는촉매이며, 바이오디젤로부터분리한파라핀계탄화수소화합물을반응원료로원 포트수첨반응에의한항공유분범위의탄화수소혼합물의제조시항공유분의이성화율은 70% 이상이고, 항공유분의수율은 40% 이상인, 바이오디젤로부터분리한파라핀계탄화수소화합물을반응원료로원 포트수첨반응에의한항공유분범위의탄화수소혼합물의제조용촉매가개시된다.
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公开(公告)号：KR102198463B1
公开(公告)日：2021-01-05
申请号：KR1020190070663
申请日：2019-06-14
Applicant: 한국화학연구원
Abstract: SAPO-34를밀링하는단계; 및상기밀링된 SAPO-34를전이금속전구체가포함된재결정용액내에서재결정하는단계;를포함하는전이금속으로적어도일부치환된 SAPO-34 분자체제조방법이제공된다. 본발명의일 측면에서제공되는 SAPO-34 및이를포함하는 MTO 반응용촉매는 MTO 반응의촉매로서의수명이향상되는효과가있다.
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