专利快速检索-快速检索全球专利，免费商用专利数据库-IPRDB

71. 发明授权

US4144158A Process for manufacture of anhydrous hydrogen fluoride and finely divided silica from fluosilicic acid 失效
标题翻译：从氟硅酸制造无水氟化氢和细碎二氧化硅的方法
公开(公告)号：US4144158A
公开(公告)日：1979-03-13
申请号：US851234
申请日：1977-11-14
申请人： Krishnamurthy Nagasubramanian , Frederick P. Chlanda , Kang-Jen Liu
发明人： Krishnamurthy Nagasubramanian , Frederick P. Chlanda , Kang-Jen Liu
IPC分类号： C01B7/19 , C01B33/18 , B01D13/02 , C01B33/00
CPC分类号： B01D61/44 , C01B33/184 , C01B7/193 , C01B7/195
摘要： An improved process is described for converting aqueous fluosilicic acid waste product into anhydrous hydrogen fluoride and finely divided silica in which aqueous fluosilicic acid is pyrolyzed to produce silica and a dilute aqueous solution of hydrogen fluoride and fluosilic acid. The resulting dilute solution is subjected to electrodialysis, thereby obtaining a hydrogen fluoride concentration greater than that which characterizes the boiling point ridge which divides the phase diagram of the system hydrogen fluoride/fluosilicic acid/water, i.e. HF/H.sub.2 SiF.sub.6 /H.sub.2 O, into two regions. Anhydrous hydrogen fluoride is recovered from the resulting composition by distillation.
摘要翻译：描述了一种改进的方法，用于将氟硅酸废物转化为无水氟化氢和热分解氟化硅酸的细碎二氧化硅，生成二氧化硅和氟化氢和氟硅酸的稀释水溶液。对所得稀溶液进行电渗析，从而获得比将系统氟化氢/氟硅酸/水（即HF / H 2 SiF 6 / H 2 O）系统的相图划分为两个区域的沸点脊特征的氟化氢浓度。通过蒸馏从所得组合物中回收无水氟化氢。

72. 发明授权

US4067957A Process for producing hydrogen fluoride from an aqueous hydrofluorosilicic acid solution 失效
标题翻译：从氢氟硅酸水溶液中生产氟化氢的方法
公开(公告)号：US4067957A
公开(公告)日：1978-01-10
申请号：US703519
申请日：1976-07-08
申请人： Ralph Eric Worthington , Padraic Seamus O'Neill
发明人： Ralph Eric Worthington , Padraic Seamus O'Neill
IPC分类号： C01B7/19 , C01B7/22
CPC分类号： C01B7/193
摘要： Potassium fluoride and silica are reacted with an aqueous solution of hydrofluorosilicic acid. The resulting potassium fluorosilicate is recovered. The potassium fluorosilicate may be further reacted with ammonia in water to form an aqueous mixture of ammonium fluoride and potassium fluoride. The ammonium fluoride is then heated in aqueous solution in the presence of excess potassium fluoride to release ammonia and to form potassium bifluoride. The potassium bifluoride is recovered from solution substantially free from ammonia and heated to release hydrogen fluoride. Alternatively, the recovered potassium bifluoride may be reacted with sodium fluoride to produce sodium bifluoride. The sodium bifluoride is then heated to release hydrogen fluoride.
摘要翻译：将氟化钾和二氧化硅与氢氟硅酸的水溶液反应。回收所得的氟硅酸钾。氟硅酸钾可以进一步与氨在水中反应形成氟化铵和氟化钾的含水混合物。然后在过量的氟化钾存在下，在水溶液中加热氟化铵以释放氨并形成二氟化钾。从基本上不含氨的溶液中回收氟化钾，并加热以释放氟化氢。或者，回收的二氟化钾可与氟化钠反应产生二氟化钠。然后加热氟化氢以释放氟化氢。

73. 发明授权

US3855399A Process of producing hydrogen fluoride from fluosilicic acid 失效
标题翻译：从氟尿酸生产氟化氢的方法
公开(公告)号：US3855399A
公开(公告)日：1974-12-17
申请号：US38910073
申请日：1973-08-16
申请人： DOW CHEM BV
发明人： VAN EIJI A
IPC分类号： C01B7/19 , C01B7/22
CPC分类号： C01B7/193
摘要： Hydrofluoric acid is prepared from fluosilicic acid (FSA) by feeding aqueous fluosilicic acid into a reactor where it is mixed with monoethylene or propylene glycol or diethylene glycol, in sufficient quantity to provide a (HF/FSA + H2O) ratio of from about 4 to about 6, at a temperature which will vaporize substantially all the SiF4. The glycol is then sent to a still where the HF and small amounts of water are stripped. The aqueous HF is passed to a still from which anhydrous HF is recovered and aqueous HF may be recycled to the reactor.
摘要翻译：氢氟酸由氟硅酸（FSA）制备，通过将氟硅酸加入反应器中，在其中与足够量的单乙烯或丙二醇或二甘醇混合，从而提供约（4〜4）的（HF / FSA + H 2 O）约6，在将使基本上全部蒸发SiF 4的温度下。然后将二醇发送到静电除去HF和少量水。将HF水溶液转移至静止状态，从其回收无水HF，并将HF水溶液再循环至反应器。

74. 发明授权

US3195979A Process of preparing hydrogen fluoride from fluosilicic acid 失效
标题翻译：从氟硅酸制备氟化氢的工艺
公开(公告)号：US3195979A
公开(公告)日：1965-07-20
申请号：US16020261
申请日：1961-12-18
申请人： INT MINERALS & CHEM CORP
发明人： BURKERT GEORGE M , BAUMANN ARTHUR N
IPC分类号： C01B7/19 , C01C1/16
CPC分类号： C01C1/162 , C01B7/193

75. 发明授权

US2981601A Process for the treatment of silicofluoride compounds 失效
标题翻译：处理氟硅化合物的方法
公开(公告)号：US2981601A
公开(公告)日：1961-04-25
申请号：US67499357
申请日：1957-07-22
申请人： KIDDE PROCESS CORP
发明人： KIDDE GUSTAVE E
IPC分类号： C01B7/19
CPC分类号： C01B7/193

76. 发明授权

US2588786A Process for producing essentially silicon-free hydrofluoric acid from hydrofluosilicic acid 失效
标题翻译：用于从氢氟硅酸生产基本无硅氢氟酸的方法
公开(公告)号：US2588786A
公开(公告)日：1952-03-11
申请号：US3471648
申请日：1948-06-23
申请人： TENNESSEE CORP
发明人： WINTER ERNEST A
IPC分类号： C01B7/19
CPC分类号： C01B7/193

77. 发明授权

US1664348A Process for the production of hydrofluoric acid from fluoric and silicic substances 失效
标题翻译：从氟和硅物质生产氢氟酸的方法
公开(公告)号：US1664348A
公开(公告)日：1928-03-27
申请号：US3809925
申请日：1925-06-18
申请人： ALBERT FRITZ MEYERHOFER
发明人： MAX BUCHNER
IPC分类号： C01B7/19
CPC分类号： C01B7/192 , C01B7/193

78. 发明专利

ZA7307660B RECOVERY OF HYDROFLUORIC ACID FROM AQUEOUS FLUOSILICIC ACID 未知
公开(公告)号：ZA7307660B
公开(公告)日：1974-08-28
申请号：ZA7307660
申请日：1973-09-28
申请人： BAYER AG
发明人： BECKER W , WEISS W
IPC分类号： C01B7/19 , C01B33/08 , C01B33/18 , C02F1/02 , C01B
CPC分类号： C01B33/186 , C01B7/193 , C01B33/08 , C01P2006/80 , C01P2006/82

79. 发明公开

KR1020100096770A 고속반응용 노즐을 이용한 나노기공 실리카, 황산나트륨 및 불산 제조장치 및 고속반응용 노즐을 이용한 나노기공 실리카의 제조방법 有权
标题翻译：使用快速反应喷嘴制造纳米二氧化硅，硫酸钠和氟化氢的装置及其方法
公开(公告)号：KR1020100096770A
公开(公告)日：2010-09-02
申请号：KR1020090015817
申请日：2009-02-25
申请人： 이엔비나노텍(주)
发明人： 김종길
IPC分类号： C01B33/12 , C01B17/34 , C01B7/19 , B82Y40/00
CPC分类号： C01B33/12 , B01J19/26 , C01B7/193 , C01B33/18 , C01B37/00 , C01D5/02 , B01J19/2405 , C01B17/74 , C01D3/02 , C01P2006/16
摘要： PURPOSE: An apparatus for manufacturing nano-porous silica, sodium sulfate and hydrogen fluoride using fast reaction nozzle, and method therefore are provided to efficiently mix sodium silicate and fluoroboric acid through vortex flow. CONSTITUTION: An apparatus for manufacturing nanoporous silica, sodium sulfate and hydrogen fluoride using fast reaction nozzle, and method therefore includes first and second reactive part. The first reactive part comprises: a raw material supply unit; fist and second non-power pumps(121,122); a high speed nozzle(130); and a precipitation tank(150) precipitating a mixed solution which is discharged from the first reaction bath.
摘要翻译：目的：使用快速反应喷嘴制造纳米多孔二氧化硅，硫酸钠和氟化氢的装置及其方法，通过涡流有效地混合硅酸钠和氟硼酸。构成：使用快速反应喷嘴制造纳米多孔二氧化硅，硫酸钠和氟化氢的装置，因此包括第一和第二反应部分。第一反应部分包括：原料供应单元; 第一和第二非动力泵（121,122）; 高速喷嘴（130）; 和从第一反应槽排出的混合溶液沉淀的沉淀槽（150）。

80. 发明授权

KR100772280B1 광학, 전자공학 또는 광전자공학용 기판의 원소 분석방법 失效
标题翻译：用于测量光学元件，电子或光电子元件的元件的方法
公开(公告)号：KR100772280B1
公开(公告)日：2007-11-01
申请号：KR1020037010603
申请日：2002-02-12
申请人： 소이텍
发明人： 비라바욱스,로렝
IPC分类号： G01N1/40
CPC分类号： G01N1/32 , C01B7/193 , C01B33/10705 , G01N1/40 , G01N1/4044 , G01N2001/4027 , G01N2033/0095
摘要： 본 발명은 실리콘을 함유하는 물질(2)의 적어도 하나의 원소의 분석방법을 제공한다. 상기 방법은 다음의 단계를 포함한다:
- 헥사플루오로규산(7) 및 분석하려는 원소를 함유하는 용액을 형성하기 위해, 상기 물질(2)의 적어도 한 부분을 에칭제(6)로 분해하는 분해단계;
- 분석하려는 원소의 양을 보존하면서 실리콘의 함유량이 현저히 감소된 분석용 용액을 얻기 위해, 적어도 상기 헥사플루오로규산의 상당 부분이 테트라플루오르화실리콘으로 변환되고, 상기 테트라플루오르화실리콘의 상당 부분이 증발되도록 하는 온도로 상기 용액을 가열하는 가열단계; 및
- 분석용 용액에 포함되어 있는 적어도 하나의 원소를 분석하는 분석단계;
본 발명은 광학, 전자공학 또는 광전자공학용 기판 또는 구성요소의 제조분야, 특히 품질관리의 분야에 적용가능하다.

원소분석방법

你已经成功收藏专利！

检索式保存成功!

IPRDB

热门服务

关于我们

友情链接

联系方式