公开(公告)号：US3567626A

公开(公告)日：1971-03-02

申请号：US3567626D

申请日：1968-12-18

Applicant: TEXACO INC

Inventor： BOZEMAN PAUL P JR ,  CUMMINS BILLY H

IPC: C10G21/00 ,  C10G21/02

CPC classification number: C10G21/00

Abstract: A PROCESS FOR PREPARING AROMATIC OILS WITH LOW SATURATE CONTENT, PARTICULARLY RUBBER PROCESSING OILS, BY CONTACTING A DISTILLATE EXTRACT WITH A HYDROCARBON MATERIAL CONTAINING UP TO 30 VOLUME PERCENT SATURATES AND RECOVERING AN AROMATIC OIL OF REDUCED SATURATE CONTENT. THE PREFERRED SOLVENT IS FURFURAL.

公开(公告)号：US3554896A

公开(公告)日：1971-01-12

申请号：US3554896D

申请日：1968-07-25

Applicant: TEXACO INC

Inventor： BOZEMAN PAUL P JR ,  MORRIS HERBERT C ,  WOODLE ROBERT A

IPC: C10G73/06 ,  C10G43/14

CPC classification number: C10G73/06

Abstract: THIS INVENTION RELATES TO A METHOD OF SEPARTING WAS FROM A WAX BEARING MINERAL OIL EMPLOYING A MIXTURE OF AN AROMATIC HYDROCARBON AND A KETONE AS A DEWAXING SOLVENT AND CHILLING OF THE OIL-SOLVENT MIXTURE BY DIRECT HEAT EXCHANGE WITH A LIQUID REFRIGERANT. COOLING TO DEWAXING TEMPERATURE IS EFFECTED BY ADMIXING LIQUID REFIGERANT WITH THE OIL-SOLVENT MIXTURE AT AN ELEVATED PRESSURE AND REDUCING THE PRESSURE EFFECTING EVAPORATION OF REFRIGERANT AND CONCOMITANT COOLING. WAX CRYSTALS FORMED AT THE DEWAXING TEMPERATURE ARE SEPARATED FROM OIL-SOVENT MIXTURE AND REPULPED WITH ADDITIONAL FSOLVENT AND DEWAXED OIL PRODUCT IS SEPARTED FROM THE OIL-SOLVENT MIXTURE. REPULPED WAX IS SEPARATED FROM THE REPULPING SOLVENT MIXTURE FORMING WAX OF LOW OIL CONTENT. REPULPING SOLVENT CONTAINING OIL WASHED FROM THE WAX CRYSTALS IS RECYCLED TO THE INITAL DEWAXING STEP TO ACHIEVE HIGH YIELDS OF DEWAXED OIL.

公开(公告)号：US3539498A

公开(公告)日：1970-11-10

申请号：US3539498D

申请日：1966-06-20

Applicant: TEXACO INC

Inventor： MORRIS HERBERT C ,  BOZEMAN PAUL P JR ,  HORTON HOWARD T JR ,  CUMMINS BILLY H

IPC: B01J29/18 ,  C10G11/05 ,  C10G45/64 ,  C10G37/02

CPC classification number: C10G11/05 ,  B01J29/18 ,  C10G2400/10