公开(公告)号：US3682815A

公开(公告)日：1972-08-08

申请号：US3682815D

申请日：1970-07-27

Applicant: UNION OIL CO

Inventor： FLECK RAYMOND N ,  DVORACEK LOUIS M ,  LUETH PAUL F

IPC: C10G21/00 ,  C10G21/04

CPC classification number: C10G21/003 ,  C10G21/04

Abstract: A DUO-SOL PROCESS WHEREIN A RESIDUUM IS SUBJECTED TO A COUNTERCURRENT LIQUID-LIQUID EXTRACTION PROCESS UTILIZING A PARAFFINIC SOLVENT TO EXTRACT PARAFFINS AND A POLAR SOLVENT TO EXTRACT AROMATICS, NAPHTHENES AND ASPHALTENES IS IMPROVED BY INTRODUCING 5-50 PERCENT OF THE POLAR SOLVENT INTO THE RESIDUM FEED STAGE. IN ANOTHER EMOBDIMENT, 1-5 PERCENT OF THE POLAR SOLVENT IS INTRODUCED INTO THE PARAFFINIC SOLVENT FEED STAGE. THE INVENTION IS PARTICULARLY USEFUL WHEREIN THE RESIDUUM CONTAINS A RELATIVELY HIGH AMOUNT OF ASPHALTENES.

公开(公告)号：US3668111A

公开(公告)日：1972-06-06

申请号：US3668111D

申请日：1970-07-16

Applicant: UNION OIL CO

Inventor： DVORACEK LOUIS M ,  SAREM AMIR M

IPC: C10G7/10 ,  C10G9/16 ,  C10G75/04 ,  C10L1/16 ,  C10G9/36 ,  C23F14/00

CPC classification number: C10L1/1641 ,  C10G7/10 ,  C10G9/16 ,  C10G75/04 ,  Y10S585/95

Abstract: The deposition of fouling deposits within process equipment operated at elevated temperatures in the presence of hydrocarbons is reduced by combining with the liquid hydrocarbon a foulant inhibiting amount of mechanically degraded polyisobutylene.

Abstract translation: 在烃的存在下在高温操作的工艺设备中沉积的沉积沉积物通过与液体烃结合使用防垢剂抑制量的机械降解的聚异丁烯来降低。

公开(公告)号：US3162550A

公开(公告)日：1964-12-22

申请号：US10864661

申请日：1961-05-08

Applicant: UNION OIL CO

Inventor： DVORACEK LOUIS M ,  NEFF LOREN L

IPC: C23F13/02 ,  C23F15/00

CPC classification number: C23F15/00

公开(公告)号：US3354062A

公开(公告)日：1967-11-21

申请号：US39771064

申请日：1964-09-21

Applicant: UNION OIL CO

Inventor： DVORACEK LOUIS M

IPC: C23F11/18

CPC classification number: C23F11/181

公开(公告)号：US2871170A

公开(公告)日：1959-01-27

申请号：US57182856

申请日：1956-03-15

Applicant: UNION OIL CO

Inventor： BEWLEY WILLIAM L ,  DVORACEK LOUIS M

IPC: B01J8/00 ,  F16K3/02

CPC classification number: B01J8/002 ,  F16K3/029