Inventor

WELMERS ADRIANUS

US5 patents

Patents

5 patents

US5616238AApr 1, 1997

Solvent extraction of hydrocarbon oils producing an increased yield of improved quality raffinate

EXXON RESEARCH ENGINEERING CO12 citations72

US5632867AMay 27, 1997

Recovering a relatively volatile component of a solution from a less volatile component, e.g. as in solvent recovery

EXXON RESEARCH ENGINEERING CO17 citations71

US5435918AJul 25, 1995

Solvent extraction process involving membrane separation of extract phase and/or intermediate zone phase

EXXON RESEARCH ENGINEERING CO11 citations71

US5234597AAug 10, 1993

Solvent extraction process involving membrane separation of extract phase and/or intermediate zone phase with pseudo extract/pseudo raffinate recycle, preferably employing interfacially polymerized membranes

EXXON RESEARCH ENGINEERING CO10 citations71

US5167773ADec 1, 1992

Distillation tower and sidestream stripper therefor

EXXON RESEARCH ENGINEERING CO16 citations70