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81. 发明授权

US3714033A Process for the separation of aromatic hydrocarbons from a mixed hydrocarbon feedstock 失效
公开(公告)号：US3714033A
公开(公告)日：1973-01-30
申请号：US3714033D
申请日：1971-09-16
申请人： UNION CARBIDE CORP
发明人： SOMEKH G , KUBEK D , KOSSEIM A
IPC分类号： C10G21/00 , C07C1/00 , C07C7/08 , C07C7/10 , C07C15/02 , C07C67/00 , C10G21/28
CPC分类号： C10G21/28 , C07C7/08 , C07C7/10 , C07C15/00
摘要： A CONTINUOUS SOLVENT EXTRACTION-STEAM DISTILLATION PROCESS FOR THE RECOVERY OF AROMATIC HYDROCARBONS HAVING BOILING POINTS IN THE RANGE OF ABOUT 80% C. TO ABOUT 175* C. FROM A FEEDSTOCK CONTAINING ALIPHATIC HYDROCARBONS AND SAID AROMATIC HYDROCARBONS COMPRISING THE FOLLOWING STEPS: (A) CONTACTING THE FEEDSTOCK IN AN EXTRACTION ZONE WITH A MIXTURE OF WATER AND A SOLVENT, SAID SOLVENT BEING A WATER-MISCIBLE ORGANIC LIQUID HAVING A BOILING POINT OF AT LEAST ABOUT 200* C. AND HAVING A DECOMPOSITION TEMPERATURE OF AT LEAST ABOUT 225* C., AND WITH REFLUX HYDROCARBONS TO PROVIDE AN EXTRACT COMPRISING AROMATIC HYDROCARBONS, REFLUX ALIPHATIC HYDROCARBONS, SOLVENT, AND WATER AND A RAFFINATE COMPRISING ESSENTIALLY ALIPHATIC HYDROCARBONS; (B) CONTACTING THE EXTRACT WITH STEAM IN I DISTILLATION ZONE TO PROVIDE AN OVERHEAD DISTILLATE COMPRISING A REFLUX HYDROCARBONS PHASE AND A WATER PHASE, A SIDE CUT DISTILLATE COMPRISING AN AROMATIC HYDROCARBONS PHASE AND A WATER PHASE, AND BOTTOMS COMPRISING A MIXTURE OF SOLVENT AND WATER; (C) DIVIDING THE WATER PHASE OF THE OVERHEAD DISTILLATE INTO FIRST AND SECOND STREAMS; (D) CONTACTING THE RAFFINATE WITH THE FIRST STREAM TO PROVIDE AN ALIPHATIC HYDROCARBONS PHASE AND A WATER PHASE; (E) CONTACTING THE SECOND STREAM WITH AN AROMATIC HYDROCARBONS STREAM CONTAINING AT LEAST 95 PERCENT AROMATIC HYDROCARBONS, THE AMOUNT OF SAID STREAM BEING IN THE RANGE OF ABOUT 0.1 PERCENT TO ABOUT 5 PERCENT BY WEIGHT OF THE TOTAL AROMATIC HYDROCARBONS IN THE FEEDSTOCK, TO FORM AN AROMATIC HYDRFOCARBONS PHASE AND A WATER PHASE; (F) CONTACTING THE AROMATIC HYDROCARBONS PHASE OF THE SIDE-CUT DISTILLATE WITH THE WATER PHASE OF (E) TO FORM AN AROMATIC HYDROCARBONS PHASE AND A WATER PHASE; (G) CONTACTING THE WATER PHASE OF STEP (D) WITH AN AROMATIC HYDROCARBONS STREAM CONTAINING AT LEAST 95 PERCENT AROMATIC HYDROCARBONS, THE AMOUNT OF SAID STREAM BEING IN THE RANGE OF ABOUT 0.1 PERCENT TO ABOUT 5 PERCENT BY WEIGHT OF THE TOTAL AROMATIC HYDROCARBONS IN THE FEEDSTOCK TO FORM AN AROMATIC HYDROCARBONS PHASE AND A WATER PHASE; (H) RECYCLING THE WATER PHASES OF STEPS (F) AND (G) TO THE DISTILLATION ZONE WHERE SAID WATER PHASES ARE ESSENTIALLY CONVERTED TO STEAM; (I) RECYCLING THE REFLUX HYDROCARBONS PHASE OF THE OVERHEAD DISTILLATE AND THE BOTTOMS OF STEP (B) TO THE EXTRACTION ZONE TO PROVIDE REFLUX HYDROCARBONS AND MIXTURE OF WATER AND SOLVENT, RESPECTIVELY, FOR STEP (A); AND (J) RECOVERING THE AROMATIC HYDROCARBONS PHASE OF STEP (F) AND THE ALIPHATIC HYDROCARBONS PHASE OF STEP (D).

D R A W I N G

82. 发明授权

US3705204A Process for recovering conjugated diolefins selectively from a c5 fraction 失效
$Process for recovering conjugated diolefins selectively from a c5 fraction$
标题翻译：从C5分级中选择性地回收共轭二烯的方法
公开(公告)号：US3705204A
公开(公告)日：1972-12-05
申请号：US3705204D
申请日：1970-08-07
申请人： NIPPON OIL CO LTD
发明人： HORIE TATSUO , YAMAMOTO SYUNICHI , GOTOH SHINJI
IPC分类号： C07C7/00 , C07C7/08
CPC分类号： C07C7/005 , C07C11/12
摘要： A PROCESS FOR RECOVERING USEFUL CONJUGATED DIOLEFINS SELECTIVELY AND EFFICIENTLY FROM A C5 FRACTION OBTAINED BY CRACKING OF HYDROCARBONS BY A COMBINATION OF STEPS OF A HEAT TREATMENT OF THE STARTING C5 FRACTION UNDER RELATIVELY MILD CONDITIONS, DIVISION OF THUS HEAT-TREATED FRACTION INTO SUBSTANTIALLY THREE FRACTIONS IN A FRACTIONATOR, I.E. FIRST, SECOND AND THIRD FRACTIONS, AND RECYCLING OF SAID SECOND FRACTION TO THE STARTING HEAT TREATMENT STEP.

83. 发明授权

US3686349A Process for recovering cyclopentene, isoprene and a diolefin stream from the c{11 -cut obtained by petroleum cracking 失效
标题翻译：从石油开采获得的C（11-）中回收环烯烃，异丙苯和二烯烃流的方法
公开(公告)号：US3686349A
公开(公告)日：1972-08-22
申请号：US3686349D
申请日：1969-08-20
申请人： BAYER AG , ERDOELCHEMIE GMBH
发明人： SCHLIEBS REINHARD , BRANDT HANS-WALTHER , ENGELHARD BRUNO , STEUDE HEINRICH , SCHERB HELMUT , SCHNUCHEL GUNTHER
IPC分类号： B01D11/04 , C07C7/00 , C07C7/08 , C07C7/10 , C10G21/24 , B01D3/40
CPC分类号： C10G21/24 , B01D11/0488 , C07C7/005 , C07C7/08 , C07C7/10 , C07C13/12 , C07C11/18
摘要： A cyclopentene rich fraction, an isoprene rich fraction, and a diolefin (essentially 1,3-pentadiene and cyclopentadiene) rich fraction are recovered from the C5 cut obtained by petroleum cracking. First, said fractions are extracted in a liquid-liquid extraction with 1-oxo-1-methylphospholine. The extractant is then distilled to separate therefrom said fractions.
摘要翻译：从通过石油裂化获得的C5馏分中回收富含环戊烯馏分，富含异戊二烯馏分和富含二烯烃（基本上1,3-戊二烯和环戊二烯）馏分的馏分。首先，所述级分用1-氧代-1-甲基磷酸二乙酯萃取液液萃取。然后将萃取剂蒸馏以与其分离。

84. 发明授权

US3681202A Method of purifying unsaturated hydrocarbons by extractive distillation with side stream removal and solvent mix 失效
标题翻译：通过具有侧流去除和溶剂混合物的萃取蒸馏来净化不饱和烃的方法
公开(公告)号：US3681202A
公开(公告)日：1972-08-01
申请号：US3681202D
申请日：1970-06-01
申请人： PETRO TEX CHEM CORP
发明人： FUNKHOUSER TERRY D
IPC分类号： C07C7/08 , B01D3/40 , C07C7/00
CPC分类号： C07C7/08 , Y10S203/20
摘要： IMPROVED CONTROL AND GREATER CAPACITY OF AN EXTRACTIVE DISTILLATION TOWER CAN BE OBTAINED BY RETURNING THE REFLUX TO THE TOWER WIGHDRAWING ALL OR A PORTION OF THE EXTERNAL REFLUX FROM THE TOWER AND PREMIXING F THE SOLVENT FEED AND EXTERNAL REFLUX PRIOR TO INTRODUCING THE SOLVENT TO THE TOWER. BY PROCEEDING IN THIS MANNER BETTER SOLUBILIZATION OF THE EXTERNAL REFLUX IN THE SOLVENT FEED IS OBTAINED THUS INCREASING THE AMOUNT OF REFLUX THAT CAN BE HANDLED BY THE SOLVENT WITH FLOODING. THE EXTERNAL PREMIXING ALSO ALLOWS ADJUSTMENT OF THE SOLVENT FEED TEMPERATURE TO COMPENSATE FOR THE VARIATIONS IN ENDOTHERMIC HEAT OF SOLUBLITY FROM VARIATIONS IN THE HYDROCARBON COMPOSITION IN THE TOWER.

85. 发明授权

US3557232A Autoxidation inhibition with chlorinated hydrocarbons 失效
标题翻译：自动氧化抑制氯化石油醚
公开(公告)号：US3557232A
公开(公告)日：1971-01-19
申请号：US3557232D
申请日：1968-11-13
申请人： EXXON RESEARCH ENGINEERING CO
发明人： STARNES WILLIAM H JR
IPC分类号： C07C7/20 , C07C7/08 , C07C7/18
CPC分类号： C07C7/20 , C07C11/02 , C07C15/00
摘要： THE METAL-CATALYZED AUTOXIDATION OF ORGANIC SUBSTRATES IS INHIBITED BY CERTAIN CHLORINATED HYDROCARBONS. THE CHLORINATED HYDROCARBONS TOGETHER WITH PHENOLS ARE STRONGLY SYNERGISTIC AS INHIBITORS FOR THE METAL-CATALYZED AUTOXIDATION OF HYDROCARBONS.

86. 发明授权

US3554873A Simplified extractive distillation process for obtaining aromatics of differing boiling-point ranges 失效
标题翻译：用于获取不同沸点范围的芳烃的简化萃取蒸馏法
公开(公告)号：US3554873A
公开(公告)日：1971-01-12
申请号：US3554873D
申请日：1967-10-11
申请人： GUNTER LUTHER , JURGEN LUDWIG , MARTIN SCHULZE
发明人： LUTHER GUNTER , LUDWIG JURGEN , SCHULZE MARTIN
IPC分类号： B01D3/40 , C07C1/00 , C07C7/08 , C07C15/02 , C07C67/00 , B01D3/34 , C07C7/00
CPC分类号： B01D3/40 , C07C7/08 , C07C15/00
摘要： AN EXTRACTIVE DISTILLATION PROCESS FOR SIMULTANEOUSLY OBTAINING AROMATICS WITH DIFFERENT BOILING-POINT RANGES FROM A FEED STOCK CONTAINING VARIED AMOUNTS OF NONAROMATICS ALONG WITH THE DESIRED AROMATICS, SAID PROCESS BEING OF THE TYPE WHEREIN THE FEED STOCK IS PASSED THROUGH AT LEAST ONE EXTRACTIVE DISTILLATION COLUMN AND IS CONTACTED WITH A SELECTIVELY ACTIVE EXTRACTION AGENT TO WHICH AROMATICS OTHER THAN THE DESIRED AROMATICS HAVE BEEN ADDED, AND WHEREIN THE MIXTURE OF AROMATICS AND EXTRACTION AGENT IS WITHDRAWN FROM THE BOTTOM OF THE COLUMN WHILE WITHDRAWING THE NON-AROMATICS IN VAPOR FORM FROM THE TOP OF THE COLUMN, THE IMPROVEMENT COMPRISING PASSING THE AROMATICS CONTAINING MASS RECEIVED FROM THE SAID EXTRACTIVE DISTILLATION COLUMN THROUGH A PLURALITY OF IN-SERIES CONNECTED COLUMN SYSTEMS, THE NUMBER OF SAID SYSTEMS CORRESPONDING TO THE NUMBER OF AROMATICS TO BE OBTAINED AND SUBJECTING THE MASS IN EACH OF SAID COLUMN SYSTEMS SUCCESSIVELY TO AN EXTRACTIVE DISTILLATION AND TO A NORMAL DISTILLATION AND RECOVERING FROM EACH SYSTEM THE DESIRED AROMATIC FRACTION.

87. 发明授权

US3496069A Purification of unsaturated hydrocarbons by extractive distillation with recycle of stripper overhead 失效
标题翻译：通过萃取蒸馏法提取不饱和烃的回收
公开(公告)号：US3496069A
公开(公告)日：1970-02-17
申请号：US3496069D
申请日：1967-11-09
申请人： PETRO TEX CHEM CORP
发明人： TSCHOPP LLOYD D , WOERNER RUDOLPH C
IPC分类号： C07C7/08 , B01D3/34 , C07C11/12
CPC分类号： C07C7/08

88. 发明授权

US3475329A Absorption of sulfur dioxide from mixtures with sulfolane 失效
标题翻译：从硫磺混合物中吸收二氧化硫
公开(公告)号：US3475329A
公开(公告)日：1969-10-28
申请号：US3475329D
申请日：1966-03-21
申请人： PHILLIPS PETROLEUM CO
发明人： LITTLE DONALD M , HETTICK GEORGE R
IPC分类号： C07C7/08 , C10G21/10 , C01B17/56
CPC分类号： C07C7/08 , Y10S62/922

89. 发明授权

US3474030A Preventing so2 resin formation with a sulfolane 失效
标题翻译：用SULFOLANE预防SO2树脂形成
公开(公告)号：US3474030A
公开(公告)日：1969-10-21
申请号：US3474030D
申请日：1967-10-09
申请人： PHILLIPS PETROLEUM CO
发明人： LITTLE DONALD M
IPC分类号： C07C7/08 , C10G21/10 , C10G21/22
CPC分类号： C07C7/08

90. 发明授权

US3466346A Method for aromatic hydrocarbon recovery 失效
标题翻译：芳烃回收方法
公开(公告)号：US3466346A
公开(公告)日：1969-09-09
申请号：US3466346D
申请日：1967-05-29
申请人： UNIVERSAL OIL PROD CO
发明人： GRAFF RICHARD R DE , PERGA MARTIN W
IPC分类号： C07C7/04 , C07C7/08 , C07C7/10 , C07C15/02
CPC分类号： C07C7/10 , C07C7/04 , C07C7/08 , Y10S203/20 , C07C15/02

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