Process for producing and using syngas and recovering methane en

Details Process for producing and using syngas and recovering methane en Process for producing and using syngas and recovering methane en

1985-10-23

1987-07-07

Kratz, Peter

Gas: heating and illuminating

Processes

Fuel mixtures

48206, 48DIG1, 75 35, 75 91, 252373, C10J 346, C10J 359, C22B 512

Patent

active

046784802

ABSTRACT:
A process for producing a synthesis gas containing methane and using a reactor having a fuel containing carbon comprises directing gasification gases in a circulation system through a bed of fuel containing carbon to form a synthesis gas containing methane and carbon dioxide. Thereafter, the synthesis gas is cooled in a regenerator and subjected to the gas separation wherein the syngas is subjected to a gas cleansing by means of a pressure change absorption in a gas scrubber to remove most of the methane and carbon dioxide and its water content is increased. The separated gas is then heated and subsequently the portion is returned into the system together with the waste gases and fuel containing carbon. The process includes a 4-pole heater which includes the first heat exchange passage for the syngas which is cooled and a second heat exchange passage for the recirculation of the syngas and is further cooled and passed through a scrubber. The system includes a heater which is arranged after the 4-pole heater which operates the gas and then the gas is passed through a reduction reactor back through a heating element of the regenerator that initially cooled the gas. A portion of the gas is also used to drive a steam turbine and to direct the excess steam from the turbine into the initial reactor which has a fluidized bed of the carbon material such as coal.

REFERENCES:
patent: 1800856 (1931-04-01), Bradley
patent: 2113774 (1938-04-01), Schnalfeldt
patent: 3698882 (1972-10-01), Garrett et al.
patent: 4011058 (1977-03-01), Johnson et al.
patent: 4094650 (1978-06-01), Koh et al.
patent: 4260412 (1981-04-01), Summers et al.
patent: 4402712 (1983-09-01), Benkmann
patent: 4521221 (1985-06-01), Richter et al.
patent: 4556421 (1985-12-01), Knop et al.

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