Sabatier process and apparatus for controlling exothermic reaction
AssigneePrecision Combustion, Inc.
InventorsChristian Junaedi, Kyle Hawley, Subir Roychoudhury
Life of this patent
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Abstract
A Sabatier process involving contacting carbon dioxide and hydrogen in a first reaction zone with a first catalyst bed at a temperature greater than a first designated temperature; feeding the effluent from the first reaction zone into a second reaction zone, and contacting the effluent with a second catalyst bed at a temperature equal to or less than a second designated temperature, so as to produce a product stream comprising water and methane. The first and second catalyst beds each individually comprise an ultra-short-channel-length metal substrate. An apparatus for controlling temperature in an exothermic reaction, such as the Sabatier reaction, is disclosed.
Claims11
An apparatus for use in an exothermic reaction, the apparatus comprising:
- (a) a first reaction zone comprising a first catalyst bed comprising at least one layer of ultra-short-channel-length metal substrate;
- (b) a second reaction zone in fluid communication with and downstream from said first reaction zone, the second reaction zone comprising a second catalyst bed comprising at least one layer of ultra-short-channel-length metal substrate;
- (c) at least one inlet for feeding one or more reactants into the first reaction zone;
- (d) an outlet for exiting a product stream from said second reaction zone;
- (e) a means for removing heat from said first reaction zone so as to maintain a temperature in said first reaction zone less than a maximum temperature suitable for materials of construction but greater than a first designated temperature;
- and
- (f) a means for removing heat from said second reaction zone so as to maintain a temperature in said second reaction zone equal to or less than a second designated temperature.
An apparatus for use in an exothermic process, comprising:
- (a) two concentric tubes, such that an inner tube of a specified diameter is positioned within an outer tube of a larger diameter;
- the outer tube comprising a housing;
- the inner tube comprising a reactor section;
- and the annular space bounded by the inner tube and the outer tube comprising a heat exchange section;
- (b) the reactor section comprising a first catalyst bed, and a second catalyst bed downstream and in fluid communication with the first catalyst bed;
- the first and second catalyst beds each individually comprising at least one layer of ultra-short-channel-length metal mesh substrate having one or more Group VIII metals deposited thereon;
- (c) at least one inlet for feeding one or more reactants into the first catalyst bed;
- (d) an outlet for removing a product stream from the second catalyst bed;
- (e) at least one inlet for feeding a heat exchange fluid into the annular space between the inner tube and the outer tube, the inlet being coincident with the second catalyst bed;
- and
- (f) at least one outlet for removing the heat exchange fluid from the annular space between the inner tube and the outer tube, the outlet being coincident with the first catalyst bed.
Dependencies are inferred from the claim text.