Ramanathan R Tarakad

46937315, Sep 15, 1987

Oct 27, 1986

6/923462

Ramanathan R. Tarakad - Houston TX
Duffer B. Crawford - Houston TX

The M. W. Kellogg Company - Houston TX

B01D 1900

55 72

Mercury is removed from natural gas by contacting the gas with a relatively mercury-free liquid state hydrocarbon and recovering a mercury-lean methane-rich gas and a mercury-enriched hydrocarbon liquid. The mercury-free hydrocarbon liquid may be obtained by separation of mercury from the mercury-enriched hydrocarbon liquid or its derivative streams.

55968830, Jan 28, 1997

Oct 3, 1995

8/538540

Dennis P. Bernhard - Allentown PA
Howard C. Rowles - Center Valley PA
Ramanathan R. Tarakad - Sugar Land TX
John D. Bassett - Surbiton, GB3

Air Products and Chemicals, Inc. - Allentown PA

F25J 300

62618

Light components are stripped from a multicomponent liquid feed mixture in a core type plate-fin heat exchanger by heating and partially vaporizing the mixture during downward flow in one of a plurality of multichannel flow passageways in the exchanger. The vapor thus formed flows upward and promotes vaporization of dissolved light components from the liquid to yield a liquid product substantially free of lighter components. The passageways are disposed in indirect heat exchange with one or more additional groups of passageways, and heat for partial vaporization of the downward-flowing liquid feed mixture is provided by indirect heat exchange with a condensing process stream. Alternatively, this heat is provided by a bottoms stream recovered from distillation of the stripped liquid product withdrawn from the core type plate-fin heat exchanger.

47268263, Feb 23, 1988

Jul 17, 1987

7/074732

Duffer B. Crawford - Houston TX
T. Michael O'Connor - Houston TX
Ramanathan R. Tarakad - Houston TX

The M. W. Kellogg Company - Houston TX

F25J 300

62 20

Heavy components of hydrocarbon gas mixtures are recovered through partial condensation of a first portion of the starting gas by indirect heat exchange with a refrigerant wherein the condensate formed is entrained in the gas stream. The condensate is separated from the resulting partially condensed, two-phase mixture and the separated condensate is then thermally stripped of light components by heat exchange with a second portion of the starting gas which is thereby also partially condensed. Heavy components from the starting gas mixture are recovered as stripped hydrocarbon condensate.