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US 6,080,372 AGranted
Two stage reactor for continuous three phase slurry hydrogenation and method of operation
AssigneeAir Products and Chemicals, Inc.
InventorReinaldo Mario Machado
Life of this patent
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Abstract
A continuous stirred tank reactor is paired with a bubble column reactor to enhance conversion in a continuous process, e.g. hydrogenation, wherein a gaseous reactant is mixed with a liquid. The continuous stirred reactor is fitted with a specialized impeller system to circulate the liquid and enhance contact of the liquid with reactant gas carried over from the bubble column.
Claims18
A slurry hydrogenation system comprising in combination:
- a continuous stirred tank reactor for containing a liquid to be hydrogenated said reactor having a catalyst and a head-space for hydrogen gas, and a single agitation system having first means to draw said head-space hydrogen gas into said liquid and a second means to purge liquid from a bottom portion of a bubble column in fluid communication with said reactor;
- said bubble column arranged in sequence with said reactor, said bubble column having means to introduce a gaseous hydrogen adjacent to a bottom location of said bubble column, said bubble column connected to said reactor by gas transfer means to permit said gas to flow from a head-space in said column to the head-space in said reactor, said column having first fluid transfer means to permit fluid to flow from a bottom portion of said column to a bottom portion of said reactor and second fluid transfer means to permit fluid to flow from an upper portion of said reactor to an upper portion of said column;
- and,
- means to withdraw a hydrogenated product from said system.
1 more element
A two stage continuous reactor comprising in combination:
- a continuous stirred tank reactor for containing a liquid to be treated with a reactant gas and, said stirred tank reactor having a head-space for said reactant gas and a single agitation system having first means to draw said head-space reactant gas into said liquid and a second means to purge liquid from a bottom portion of a bubble column in fluid communication with said stirred tank reactor;
- said bubble column arranged in sequence with said stirred tank reactor, said bubble column having means to introduce a gaseous reactant adjacent to a bottom location of said bubble column, said bubble column connected to said stirred tank reactor by gas transfer means to permit said gas to flow from a head-space in said column to the head-space in said stirred tank reactor, said column having first fluid transfer means to permit fluid to flow from a bottom portion of said column to a bottom portion of said stirred tank reactor and second fluid transfer means to permit fluid to flow from an upper portion of said stirred tank reactor to an upper portion of said column;
- and,
- means to withdraw a product from said first fluid transfer means.
1 more element
A method of hydrogenating a liquid comprising the steps of:
- introducing said liquid to be hydrogenated into a two stage reactor system comprising in combination a continuous stirred tank reactor adapted to contain a liquid to be treated with a reactant gas and a head-space for said reactant gas, said stirred tank reactor having a single agitation system having first means to draw said head-space reactant gas into said liquid and a second means to purge liquid from a bottom portion of a bubble column in fluid communication with said stirred tank reactor, and the bubble column arranged in sequence with said stirred tank reactor, said bubble column having means to introduce a gaseous reactant adjacent to a bottom location of said bubble column, said bubble column connected to said stirred tank reactor by gas transfer means to permit said gas to flow from a head-space in said column to the head-space in said stirred tank reactor, said column having first fluid transfer means to permit fluid to flow from a bottom portion of said column to a bottom portion of said stirred tank reactor and second fluid transfer means to permit fluid to flow from an upper portion of said stirred tank reactor to an upper portion of said column;
- introducing hydrogen into said bubble column of said two stage reactor as said reactant gas;
- and
- withdrawing a hydrogenated product from said reactor system.
1 more element
Dependencies are inferred from the claim text.