Production of synthesis gas and recovery of particulate carbon

Details Production of synthesis gas and recovery of particulate carbon Production of synthesis gas and recovery of particulate carbon

C - Chemistry, Metallurgy

01

B

48/29

C01B 3/00 (2006.01)

Patent

CA 1079973

PRODUCTION OF SYNTHESIS GAS AND RECOVERY OF PARTICULATE CARBON (D#74,231-FB) ABSTRACT OF THE INVENTION This is a process for producing gaseous mixtures comprising H2 and CO which includes the recovery of particulate carbon from the effluent gas stream from a partial oxidation gas generator. Included in the process are the steps of scrubbing the effluent gas with water in a scrubbing zone to form a carbon-water dispersion, and mixing said dispersion in mixing and separating zones with a liquid organic extractant selected from the group consisting of a mixture of liquid organic by-products from oxo or oxyl process, a light liquid hydrocarbon fuel, and mixtures thereof. The aforesaid liquid organic extractant may be obtained subsequently in the process from a thin centrifuge stream of carbon-extractant dispersion, or from a light liquid fraction from a distillation zone, or preferably from both sources. Make-up fresh extractant from an external source may also be introduced into the system. In the separating zone, a clarified water layer and a carbon-extractant dispersion is produced. Then follows the steps of: separating and recycling said clarified water to said scrubbing zone; separating said carbon-extractant dispersion and introducing same into a centrifugal separation zone; separately withdrawing from said centrifugal separation zone a thick stream of carbon-extractant dispersion and a separate thin stream of carbon-extractant dispersion; degasifying and introduceing said thin centrifugal stream into said mixing and separating zone as a portion of said liquid extractant, introducing said thick stream of carbon-extractant dispersion in admixture with fresh heavy liquid hydrocarbon fuel e.g. heavy fuel oil into a fractional distillation zone; recycling a light liquid fraction from said distillation zone to said mixing zone as a portion of said liquid organic extractant, and introducing a pumpable bottoms slurry of carbon heavy liquid hydrocarbon fuel from said distillation zone into said synthesis gas generator as at least a portion of the fuel. -1-

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