Inductively heated methane pyrolysis reactor for advanced oxygen recovery in environmental control and life support systems

Patent metadata

Field	Value
Publication number	US-10486967-B2
Application number	US-201715586590-A
Country	US
Kind code	B2
Filing date	May 4, 2017
Priority date	May 4, 2017
Publication date	Nov 26, 2019
Grant date	Nov 26, 2019

Abstract

A pyrolysis reactor includes a chamber having an inactive section and an active section. The inactive section is configured to hold an inactive pre-form capable of adhering carbon. The active section is configured to hold an active pre-form capable of adhering carbon. An induction coil is outside of and operatively adjacent the active section, and wherein the active section is configured to pyrolyze a hydrocarbon.

First claim

We claim:

1. An environmental control system, comprising:
a carbon dioxide source that discharges a carbon dioxide flow;
a Sabatier reactor downstream, in terms of the carbon dioxide flow, of the carbon dioxide source, wherein the Sabatier reactor produces a product flow that contains methane and water;
a water separator downstream, in terms of the product flow, of the Sabatier reactor, wherein the water separator is directly connected to first ducting which is directly connected to the Sabatier reactor, wherein the first ducting conveys the product flow, wherein the water separator separates methane and water, wherein the water separator discharges a methane flow and a water flow;
a pyrolysis reactor downstream, in terms of the methane flow, of the water separator, wherein the pyrolysis reactor is directly connected to second ducting which is directly connected to the water separator, wherein the second ducting conveys the methane flow, wherein the pyrolysis reactor discharges a hydrogen flow, wherein the pyrolysis reactor is upstream, in terms of the hydrogen flow, of the Sabatier reactor, wherein the pyrolysis reactor includes:
a chamber configured to concurrently hold a plurality of pre-forms;
an induction coil that surrounds only an active section of the chamber;
wherein the active section is configured to inductively heat a pre-form;
a manifold that surrounds a housing of the chamber, and is between the housing and the induction coil;
a hydrocarbon inlet in the housing, wherein the inlet is between the manifold and the chamber;
wherein the pre-forms are configured to move along a longitudinal length of the chamber;
wherein the pre-forms are configured to adhere carbon;
wherein the pyrolysis reactor conveys the hydrogen flow directly to a compressor; and

an oxygen generating assembly (OGA) downstream, in terms of the water flow, of the water separator, wherein the OGA is directly connected to third ducting which is directly connected to the water separator, wherein the third ducting conveys the water flow, wherein the OGA produces hydrogen and oxygen, wherein the OGA is directly connected to fourth ducting which is directly connected to a carbon dioxide-hydrogen flow into the Sabatier reactor.

2. The system of claim 1 , wherein the compressor is between the carbon dioxide source and the Sabatier reactor.

3. The system of claim 1 , wherein the Sabatier reactor receives carbon dioxide from the carbon dioxide source and receives hydrogen from the OGA.

4. The system of claim 1 , wherein the carbon dioxide source is a Carbon Dioxide Removal Assembly (CDRA).

5. The system of claim 1 , wherein the system is in a gravity free environment.

6. The system of claim 1 , wherein the system is in a deep space vehicle or on a planet.

7. A pyrolysis reactor, comprising:
a chamber that holds a plurality of pre-forms;
an induction coil that exteriorly surrounds only an active section of the chamber, wherein the induction coil has a longitudinal length parallel to a longitudinal axis of the chamber;
wherein the active section is configured to inductively heat a pre-form;
a manifold that surrounds a housing of the chamber, and is between the housing and the induction coil;
a hydrocarbon inlet in the housing, wherein the inlet is only positioned within the longitudinal length of the induction coil;
an advancer element that moves the plurality of pre-forms along a longitudinal length of the chamber; and
a scaffold having legs that are attached to the plurality of pre-forms;
wherein each of the plurality of pre-forms is in the form of a disc;
wherein the plurality of pre-form discs are stacked in the form of a cartridge;
wherein, at any given time, at least one pre-form can be operatively adjacent the induction coil; and
a hydrogen outlet out of the chamber.

8. The reactor of claim 7 , wherein the induction coil surrounds less than an entirety of the chamber.

9. The reactor of claim 7 , wherein the pre-forms are electrically conductive and are heated by the induction coil.

Assignees

• Honeywell Int Inc

Inventors

• Isobe Jun
• Lo Charles
• Childers Amanda
• Yates Stephen
• Winton Dale

Classifications

• C25B1/04

  by electrolysis of water · CPC title

• C07C1/12

  from carbon dioxide with hydrogen · CPC title

• C01B2203/062

  Hydrocarbon production, e.g. Fischer-Tropsch process · CPC title

• C01B3/24 Primary

  of hydrocarbons · CPC title

• C01B2203/1241

  Natural gas or methane · CPC title