公开(公告)号：US3647383A

公开(公告)日：1972-03-07

申请号：US3647383D

申请日：1969-08-28

申请人： PPG INDUSTRIES INC

发明人： FARMER ALONZO ,  BOGDAN JOHN R

IPC分类号： C01G23/07 ,  C01G23/04

CPC分类号： C01G23/07 ,  C01P2006/60

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. Operation of the chlorine recovery zone is improved by utilizing reactant oxygen having not more than about 100 parts per million nitrogen.

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。 通过利用不超过百万分之一百份氮的反应物氧来改善氯回收区的操作。

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。