公开(公告)号：US3657339A

公开(公告)日：1972-04-18

申请号：US3657339D

申请日：1969-09-26

Applicant: ALLIED CHEM

Inventor： KUTSHER GEORGE S ,  ELLIOTT GEORGE A

IPC: C07C273/02 ,  C07C127/00

CPC classification number: C07C273/02

Abstract: AN IMPROVED SOLVENT AND PROCESS FOR MAKING UREA BY REACTION OF AMMONIA, SULFU AND CARBON MONOXIDE. THE PROCESS INVOLVE THE USE OF A REACTION SOLVENT COMPRISING A MIXUTRE OF DIALKYL ETHERS OF POLYALKYLENE GLYCOLS HAVING AN AVERAGE MOLECULAR WEIGHT BETWEEN ABOUT 2000 AND ABOUT 400. BY-PRODUCT HYDROGEN SULFIDE IS CONTINUOUSLY STRIPPED FROM THE REACTION MIXTURE WITH EXCESS CARBON MONOXIDE, ABSORBED IN SOLVENT RECOVERED FROM THE REACTION PRODUCT MIXTURE, AND OXIDIZED TO SULFUR WITH AN OXYGEN-CONTAINING GAS IN THE PRESENCE OF A CARBON CATALYST. THE RESULTING SULFUR-CONTAINING SOLVENT MIXTURE IS RECYCLIED TO THE UREA SYNTHESIS REACTION. THUS, ONLY CARBON MONOXIDE, AMMONIA

AND OXYGEN (AIR) ARE CONSUMED IN THE OVERALL PROCESS FOR PRODUCTION OF UREA.

公开(公告)号：US3415822A

公开(公告)日：1968-12-10

申请号：US50706165

申请日：1965-11-09

Applicant: ALLIED CHEM

Inventor： ELLIOTT DALE E ,  ELLIOTT GEORGE A ,  MOORE WILLIAM P

CPC classification number: C07D251/32

公开(公告)号：US3105741A

公开(公告)日：1963-10-01

申请号：US10203661

申请日：1961-04-10

Applicant: ALLIED CHEM

Inventor： MOORE JR WILLIAM P ,  ELLIOTT GEORGE A

IPC: C01B21/14

CPC classification number: C01B21/1481

公开(公告)号：US3434937A

公开(公告)日：1969-03-25

申请号：US3434937D

申请日：1966-10-06

Applicant: ALLIED CHEM

Inventor： ELLIOTT GEORGE A ,  AKIN JEROME E ,  MACGREGOR ROB R

IPC: C07C31/04 ,  B01D3/38

CPC classification number: C07C29/84 ,  Y10S203/24 ,  C07C31/04

公开(公告)号：US3133870A

公开(公告)日：1964-05-19

申请号：US15289461

申请日：1961-11-16

Applicant: ALLIED CHEM

Inventor： ELLIOTT GEORGE A ,  MOORE JR WILLIAM P

IPC: C01B21/16

CPC classification number: C01B21/16

公开(公告)号：US3136821A

公开(公告)日：1964-06-09

申请号：US112060

申请日：1960-01-07

Applicant: ALLIED CHEM

Inventor： DATIN RICHARD C ,  ELLIOTT GEORGE A

CPC classification number: C07C47/21

公开(公告)号：US3002016A

公开(公告)日：1961-09-26

申请号：US81854759

申请日：1959-06-08

Applicant: ALLIED CHEM

Inventor： ELLIOTT GEORGE A ,  FURBUSH SEYMOUR A

IPC: C07C51/14 ,  C07C67/38

CPC classification number: C07C51/14 ,  C07C67/38 ,  C07C57/04 ,  C07C69/54