公开(公告)号：US3651166A

公开(公告)日：1972-03-21

申请号：US3651166D

申请日：1968-04-29

Applicant: MARATHON OIL CO

Inventor： HALL DAVID W

IPC: C07C1/00 ,  C07C11/18 ,  C07D201/16 ,  C07C1/20

CPC classification number: C07D201/16 ,  C07C1/00 ,  C07C11/18

Abstract: RECOVERING ACIDS AND ORGANIC BASES FROM THEIR SALTS BY HEATING THE SALT TO ITS DISSOCIATION TEMPERATURE AND REMOVING THEREFROM THE ACID OR BASE WHEREIN THE SALT DISSOCIATES AT A TEMPERATURE LOWER THAN THE DECOMPOSITION TEMPERATURES OF THE ACID AND BASE; THE ACID AND BASE HAVE DIFFERENT VOLATILITIES AND THE SALT HAS A SUBLIMATION TEMPERATURE HIGHER THAN THE DISSOCIATION TMPERATURE THEREOF.

公开(公告)号：US3402047A

公开(公告)日：1968-09-17

申请号：US38960164

申请日：1964-08-14

Applicant: PHILLIPS PETROLEUM CO

Inventor： SHAUL DUANE D

IPC: A23C1/06 ,  A23F3/24 ,  A23F5/30 ,  A23L2/12 ,  B01D9/00 ,  C07D201/16 ,  C12G3/14

CPC classification number: C07C45/81 ,  A23C1/06 ,  A23F3/24 ,  A23F5/30 ,  A23L2/12 ,  B01D9/0013 ,  B01D9/004 ,  B01D9/005 ,  B01D9/0059 ,  C07D201/16 ,  C12G3/105

Abstract: 1,105,489. Concentrating liquids by freezing. PHILLIPS PETROLEUM CO. 2 Aug., 1965 [14 Aug., 1964], No. 33015/65. Heading F4H. In a process for separating the components of a liquid mixture by freezing, the crystal/ mother-liquor slurry from a freezer 2 is passed to a separator 16 from which the motherliquor is withdrawn at 9, the crystals are passed to a mixing vessel 18 where they are re-slurried with un-processed liquid from line 13, the slurry is passed to a purification column 20, and the mother liquor is withdrawn from an intermediate filter section 24 of the column and recycled through line 17 to form part or all of the liquid supply 1 for the freezer. The column further includes a reflux portion 30 and a heater 32 for melting the crystals, the melt being withdrawn through line 23 to which a pulsating pressure is applied by means 36. The freezer 2 is of the jacketed type including a scraper 8 but may be replaced by a direct contact heat exchanger. Liquids which may be treated in the process are sea-water, caprolactam, hydrocarbon mixtures such as para and meta-xylene and combinations of benzene n-heptane, carbon tetrachloride, ethyl alcohol, cyclohexane, methyl cyclohexane, toluene, chloroform, acetone and ethyl benzene, and food products such as grape, orange, lemon, pineapple, apple and tomato juices, vegetable juices, milk, beer, wine, coffee and tea. A quantitative example of the process as applied to the concentration of beer is given.

公开(公告)号：US3375082A

公开(公告)日：1968-03-26

申请号：US45155965

申请日：1965-04-28

Applicant: HOECHST AG

Inventor： GRAF RODERICH

IPC: B01D9/00 ,  B01D9/02 ,  C07C51/43 ,  C07D201/16 ,  C07D205/08 ,  C30B13/32

CPC classification number: C07D205/08 ,  B01D9/0013 ,  B01D9/004 ,  B01D9/0063 ,  C07C51/43 ,  C07C317/00 ,  C07D201/16 ,  C07C57/08

Abstract: 1,100,426. Crystal - melt reflux. FARBWERKE HOECHST A.G. 29 April, 1965 [29 April, 1964], No. 18090/65. Heading B1G. [Also in Division F4] A high-melting component is separated in pure form from a mixture by passing the mixture into an intermediate zone of a vertical fractionation column which is cooled at the top and heated at the bottom. Crystals of the high - melting component fall downwards through the column and are melted at the bottom, a portion of the melt rises so effecting reflux, and the remainder of the melt is withdrawn as product. Component-depleted solvent is withdrawn from the top of the column. The amount of solvent employed may be 10 times that of the impurity to be removed. Substances purified may be 4,4-dimethyl-acetidnone-2 (from diisopropyl ether), dimethyl sulphoxide (from isopropyl chloride), and crotonic acid (from diisopropyl ether). According to the Figure, solution passes from a pipe 4 into a column 1 between cooling jackets 2 and 3, solvent passes out through a pipe 8, crystals are melted by heating jacket 13, and melt passes out through a pipe 6. The solution is stirred by a perforated blade 9 which may rotate in alternate directions. The temperature in the column is measured at points T 1-3 .

公开(公告)号：US3359260A

公开(公告)日：1967-12-19

申请号：US42214064

申请日：1964-12-30

Applicant: UNION CARBIDE CORP

Inventor： ROBERTS RICHARD L ,  MACPEEK DONALD L

IPC: C07D201/08 ,  C07D201/16

CPC classification number: C07D201/08 ,  C07D201/16

公开(公告)号：US3186984A

公开(公告)日：1965-06-01

申请号：US3186984D

CPC classification number: C07D201/16

公开(公告)号：US3021326A

公开(公告)日：1962-02-13

申请号：US3021326D

CPC classification number: C07D201/16

公开(公告)号：US2964535A

公开(公告)日：1960-12-13

申请号：US67317757

申请日：1957-07-22

Applicant: MONSANTO CHEMICALS

Inventor： CLEMENTS HOWARD E

IPC: C07D201/16

CPC classification number: C07D201/16

公开(公告)号：US2817661A

公开(公告)日：1957-12-24

申请号：US2817661D

CPC classification number: C07D201/16

公开(公告)号：US2806856A

公开(公告)日：1957-09-17

申请号：US42659754

申请日：1954-04-29

Applicant: ARNOLD HOFFMAN & CO INC

Inventor： ROBINSON CHARLES A

IPC: C07D201/16

CPC classification number: C07D201/16

公开(公告)号：US2692878A

公开(公告)日：1954-10-26

申请号：US2692878D

CPC classification number: C07D201/16 ,  C07D201/04