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31. 发明授权

US4569387A Device for the cooling of hot gaseous solids suspensions 失效
标题翻译：用于冷却热气固体悬浮液的装置
公开(公告)号：US4569387A
公开(公告)日：1986-02-11
申请号：US463409
申请日：1983-02-03
申请人： Achim Hartmann , Dietrich W. Schonherr
发明人： Achim Hartmann , Dietrich W. Schonherr
IPC分类号： C01G23/07 , F28D7/10 , F24H3/00
CPC分类号： C01G23/075 , F28D7/106
摘要： The invention concerns a device for the cooling of hot gaseous solids suspensions, particularly for the cooling of hot gaseous TiO.sub.2 suspensions resulting from the production of titanium dioxide by vapor phase oxidation of titanium tetrachloride. The device consists of a number of coaxially connected constructional units, each of which consists of three jacketed tubes, i.e., tubes 1, 2 and 3, which are coaxially connected in such a way that tube 1 conically tapers toward tube 2 and that tube 3 is larger in diameter than tube 2. Heat transfer is twice as high in the device of the invention as in a comparable conventional cooling tube of uniform inner diameter; moreover, the demand of scrub solids needed to prevent the formation of deposits on its walls is reduced to one third of the quantity needed in a conventional cooling tube.
摘要翻译：本发明涉及一种用于冷却热气固体悬浮液的装置，特别是用于冷却通过气相氧化四氯化钛生产二氧化钛的热气态TiO 2悬浮液。该装置由许多同轴连接的构造单元组成，每个单元由三个夹套管组成，即管1,2和3，管子1以同样的方式连接，使得管子1朝管2锥形渐缩，管3 直径比管2大。在本发明的装置中的热传递是在相同的内径均匀的常规冷却管中的两倍; 此外，防止在其壁上形成沉积物所需的洗涤固体的需求减少到常规冷却管中所需量的三分之一。

32. 发明授权

US3650695A Method for treating titanium dioxide reactor discharge containing products of nitrogen fixation 失效
标题翻译：用于处理含氮固定产物的二氧化钛反应器放电的方法
公开(公告)号：US3650695A
公开(公告)日：1972-03-21
申请号：US3650695D
申请日：1969-08-28
申请人： PPG INDUSTRIES INC
发明人： BOGDAN JOHN R , FARMER ALONZO
IPC分类号： C01G23/07 , C01G23/04 , C01B21/20
CPC分类号： C01G23/075 , C01G23/07
摘要： Pigmentary titanium dioxide is produced by vapor phase oxidation of titanium tetrachloride with oxygen at elevated temperatures in a reactor. Gaseous and solid products produced by the reaction are separated and chlorine recovered from the gaseous portion in a chlorine recovery zone. Obstruction of the chlorine recovery zone by products resulting from nitrogen fixation is prevented by scrubbing reactor discharge gas with liquid chlorine, liquid titanium tetrachloride or liquid chlorinated solvents. Removal of the obstruction is accomplished by heating the chlorine recovery zone.
摘要翻译：通过在反应器中在升高的温度下用氧气四氧化钛气化氧化产生着色二氧化钛。由反应产生的气态和固体产物被分离，氯回收区的气体部分回收氯。通过用液氯，液态四氯化钛或液体氯化溶剂洗涤反应器排放气体来防止由氮固定产生的氯回收区的阻塞。通过加热氯回收区来实现阻塞的去除。

33. 发明授权

US3552995A Production of coated titanium dioxide particles 失效
标题翻译：涂覆二氧化钛颗粒的生产
公开(公告)号：US3552995A
公开(公告)日：1971-01-05
申请号：US3552995D
申请日：1968-07-10
申请人： BRITISH TITAN PRODUCTS
发明人： POWELL STANLEY
IPC分类号： C01G23/07 , C09C1/36 , B44D1/16
CPC分类号： C09C1/3661 , C01G23/07 , C01G23/075 , C01P2004/61 , C01P2006/10 , C01P2006/60
摘要： A PROCESS FOR THE PRODUCTION OF COATED METAL OXIDE PARTICLES COMPRISING OXIDISNG A METAL HALIDE IN THE VAPOUR PHASE TO PROVIDE A SUSPENSION OF STARTING METAL OXIDE PARTICLES IN A HOT STREAM, INTRODUCING A DIFFERENT METAL HALIDE INTO THE GAS STREAM TO DRY COAT A DIFFERENT METAL OXIDE ON THE PARTICLES, RECOVERING THE DRY COATED METAL

OXIDE PARRICLES FROM THE GAS STREAM AND SUBJECTING THEM TO A WET COATING PROCESS.

34. 发明授权

US3439432A Method and means for purging pulverulent materials of occluded gases 失效
标题翻译：用于净化气体的金属材料的方法和手段
公开(公告)号：US3439432A
公开(公告)日：1969-04-22
申请号：US3439432D
申请日：1967-11-02
申请人： NAT LEAD CO
发明人： BELLINGER ARTHUR A , DOYLE GEORGE W
IPC分类号： C01G23/07 , F26B17/18
CPC分类号： C01G23/075

35. 发明授权

US3401465A Means for cooling solid particulate materials with fluids 失效
标题翻译：用流体冷却固体颗粒物质的方法
公开(公告)号：US3401465A
公开(公告)日：1968-09-17
申请号：US60439066
申请日：1966-12-23
申请人： NAT LEAD CO
发明人： JOHART LARWILL
IPC分类号： B01J8/10 , B01J8/18 , B01J8/38 , B01J8/44 , C01G23/07 , F28C3/16
CPC分类号： F28C3/16 , B01J8/10 , B01J8/1836 , B01J8/382 , B01J8/44 , C01G23/075

36. 发明授权

US3169380A Cooling of solids 失效
标题翻译：固体冷却
公开(公告)号：US3169380A
公开(公告)日：1965-02-16
申请号：US23767462
申请日：1962-11-14
申请人： BRITISH TITAN PRODUCTS
发明人： CALLOW ALAN EDWARD , HARRIS BERNARD
IPC分类号： C01G23/07 , F28C3/16
CPC分类号： C01G23/075 , F28C3/16

37. 发明授权

US2833627A Method for cooling the hot, gas-containing reaction products resulting from the oxidation of titanium tetrachloride 失效
标题翻译：冷却由四氯化钛氧化产生的含热气体反应产物的方法
公开(公告)号：US2833627A
公开(公告)日：1958-05-06
申请号：US55697756
申请日：1956-01-03
申请人： DU PONT
发明人： KRCHMA IGNACE J
IPC分类号： C01G23/07
CPC分类号： C01G23/075

38. 发明授权

EP1954767B1 TITANIUM DIOXIDE FINISHING PROCESS 有权转让
标题翻译：二氧化钛制造工艺
公开(公告)号：EP1954767B1
公开(公告)日：2012-08-15
申请号：EP06827118.8
申请日：2006-10-31
申请人： E.I. DU PONT DE NEMOURS AND COMPANY
发明人： DIEMER, Russell, Bertrum, Jr. , EATON, Alan, Roger , SUBRAMANIAN, Narayanan, Sankara , TAYLOR, Stephen, William , SCHURR, George, A. , ZIMMERMAN, David, A.
IPC分类号： C01G23/07 , C01G23/08 , C09C1/36
CPC分类号： C01G23/07 , B82Y30/00 , C01G23/075 , C01G23/08 , C01P2004/62 , C01P2004/64 , C01P2006/80 , C09C1/3607
摘要： This disclosure relates to process for producing titanium dioxide (TiO2) pigments, comprising the following steps: a) oxidizing a mixture of titanium tetrahalide and a rutile forming agent, such as aluminum halide, present in the vapor phase and in the presence of a nucleant to form a gaseous suspension comprising titanium dioxide particles; b) passing the gaseous suspension to a cooling conduit; c) introducing scouring material into the cooling conduit; wherein the particles of the scouring material have a diameter in the range of about 0.25 mm to about 12.7 mm; d) separating the vapor phase to form a powder comprising the titanium dioxide particles and the scouring material; and e) simultaneously subjecting the powder to substantially uniform heating at a temperature of about 3000C to about 6000C and reducing the size of the titanium dioxide particles and the particles of the scouring material in the powder to a mean particle size of about 50 nm to about 1000 nm, whereby the titanium dioxide pigment has a chloride content of less than about 500 ppm. The so treated powder may have a residual free chlorine content of less than about 1 ppm. The Figure is a simplified flow diagram of one embodiment of the process of the disclosure wherein feedstreams comprising oxygen, titanium tetrachloride, a nucleant and a rutile forming agent are introduced to an oxidation zone 10 wherein, in the vapor phase, the titanium tetrachloride is oxidized to form a gaseous suspension comprising titanium dioxide particles, the gaseous suspension is transferred to a cooling conduit 12 wherein the gaseous suspension is contacted with scouring material to form a cooled product having a solid phase and a vapor phase. The vapor phase is separated from the solid phase via separator 14 to form a powder comprising titanium dioxide particles and the scouring material which is passed to a particle size reducing unit 16. The powder withdrawn from the unit can be subjected to surface treating in finishing unit 18.

39. 发明公开

EP1954767A1 TITANIUM DIOXIDE FINISHING PROCESS 有权转让
标题翻译：二氧化钛制造工艺
公开(公告)号：EP1954767A1
公开(公告)日：2008-08-13
申请号：EP06827118.8
申请日：2006-10-31
申请人： E.I. DU PONT DE NEMOURS AND COMPANY
发明人： DIEMER, Russell, Bertrum, Jr. , EATON, Alan, Roger , SUBRAMANIAN, Narayanan, Sankara , TAYLOR, Stephen, William , SCHURR, George, A. , ZIMMERMAN, David, A.
IPC分类号： C09C1/36 , C09C3/04 , C01G23/047
CPC分类号： C01G23/07 , B82Y30/00 , C01G23/075 , C01G23/08 , C01P2004/62 , C01P2004/64 , C01P2006/80 , C09C1/3607
摘要： This disclosure relates to process for producing titanium dioxide (TiO2) pigments, comprising the following steps: a) oxidizing a mixture of titanium tetrahalide and a rutile forming agent, such as aluminum halide, present in the vapor phase and in the presence of a nucleant to form a gaseous suspension comprising titanium dioxide particles; b) passing the gaseous suspension to a cooling conduit; c) introducing scouring material into the cooling conduit; wherein the particles of the scouring material have a diameter in the range of about 0.25 mm to about 12.7 mm; d) separating the vapor phase to form a powder comprising the titanium dioxide particles and the scouring material; and e) simultaneously subjecting the powder to substantially uniform heating at a temperature of about 3000C to about 6000C and reducing the size of the titanium dioxide particles and the particles of the scouring material in the powder to a mean particle size of about 50 nm to about 1000 nm, whereby the titanium dioxide pigment has a chloride content of less than about 500 ppm. The so treated powder may have a residual free chlorine content of less than about 1 ppm. The Figure is a simplified flow diagram of one embodiment of the process of the disclosure wherein feedstreams comprising oxygen, titanium tetrachloride, a nucleant and a rutile forming agent are introduced to an oxidation zone 10 wherein, in the vapor phase, the titanium tetrachloride is oxidized to form a gaseous suspension comprising titanium dioxide particles, the gaseous suspension is transferred to a cooling conduit 12 wherein the gaseous suspension is contacted with scouring material to form a cooled product having a solid phase and a vapor phase. The vapor phase is separated from the solid phase via separator 14 to form a powder comprising titanium dioxide particles and the scouring material which is passed to a particle size reducing unit 16. The powder withdrawn from the unit can be subjected to surface treating in finishing unit 18.

40. 发明公开

EP1742878A1 SCOUR MEDIA FOR TITANIUM DIOXIDE PRODUCTION 审中-公开
标题翻译： AUSKOLKUNGSMEDIUM于获得二氧化钛
公开(公告)号：EP1742878A1
公开(公告)日：2007-01-17
申请号：EP05779225.1
申请日：2005-04-29
申请人： Tronox LLC
发明人： FLYNN, Harry, Eugene , MAKER, Joe, Bert , KELLER, Trent, Roger
IPC分类号： C01G23/07
CPC分类号： C01G23/075 , C01G23/07 , C01P2004/50 , C01P2006/10 , C01P2006/21 , C01P2006/80 , F28G1/12
摘要： Anatase titanium dioxide pigment calcined to a crush strength and density meeting the requirements for an acceptable scour medium is effectively utilized as a scour medium in the chloride process for producing rutile titanium dioxide. The calcining process converts a portion of the anatase pigment to rutile. This calcined anatase can, consequently, be utilized as a scour medium in the chloride process for producing rutile titanium dioxide. The calcined anatase is not a contaminant to the process for producing rutile titanium dioxide. Thus, relatively inexpensive anatase can be converted into a rutile scour medium that can be processed into pigment.

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