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US 11,806,706 B2Granted
Direct non-oxidative methane conversion in a catalytic wall reactor
AssigneeUniversity of Maryland, College Park
InventorsDongxia Liu, Su Cheun Oh
Life of this patent
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Abstract
Disclosed herein are methane conversion devices that achieve autothermal conditions and related methods using the methane conversion devices.
Claims20
A methane conversion device comprising:
- a source of methane;
- a source of gas including oxygen or oxygen containing compound;
- a reactor having a first reaction zone and a second reaction zone;
- a first valve in fluid communication with the source of methane, the first reaction zone, and the second reaction zone, the first valve having a first position in which the first reaction zone is placed in fluid communication with the source of methane, the first valve having a second position in which the second reaction zone is placed in fluid communication with the source of methane;
- a second valve in fluid communication with the source of gas, the first reaction zone, and the second reaction zone, the second valve having a first position in which the second reaction zone is placed in fluid communication with the source of gas, the second valve having a second position in which the first reaction zone is placed in fluid communication with the source of gas;
- a first catalyst having a surface exposed to the first reaction zone;
- a second catalyst having a surface exposed to the second reaction zone;
- and
- a controller for controlling a flow rate of methane and for controlling a flow rate of gas, wherein the controller is configured to execute a program stored in the controller to control the flow rate of methane and control the flow rate of gas such that the methane conversion device operates autothermally.
6 more elements
A method for autothermal operation of a direct non-oxidative methane conversion (DNMC) device, the method comprising:
- (a) providing a catalytic reactor, wherein the reactor comprises a catalyst fused to a first side of a wall and fused to an opposite second side of the wall;
- (b) converting methane (MC) by flowing methane into the first side of the wall;
- (c) obtaining products resulting from the methane conversion (MC) reaction;
- (d) swapping the MC reaction to the second side of the wall;
- (e) supplying to the first side of the wall a gas including oxygen resulting in a combustion reaction with one of the products;
- (f) swapping the combustion reaction from the first side of the wall to the second side of the wall;
- and
- (g) swapping the MC reaction from the side of the second wall to the first side of the wall.
5 more elements
A method for producing a millisecond catalytic wall reactor, the method comprising:
- (a) loading Fe/SiO2(Q) into a tube;
- (b) heating the Fe/SiO2(Q) and the tube;
- and
- (c) discharging the Fe/SiO2(Q) residue.
1 more element
Dependencies are inferred from the claim text.