Method and system for producing a synthesis gas using an oxygen transport membrane based reforming system with secondary reforming

Patent metadata

Field	Value
Publication number	US-9352296-B2
Application number	US-201514661679-A
Country	US
Kind code	B2
Filing date	Mar 18, 2015
Priority date	Apr 26, 2013
Publication date	May 31, 2016
Grant date	May 31, 2016

Abstract

A method and system for producing a synthesis gas in an oxygen transport membrane based reforming system is disclosed that carries out a primary reforming process, a secondary reforming process.

First claim

What is claimed is:

1. An oxygen transport membrane based reforming system for producing synthesis gas comprising:
a reactor housing;
a plurality of catalyst containing and reactively driven oxygen transport membrane elements or tubes disposed in the reactor housing and configured to separate oxygen from an oxygen containing feed stream and produce an oxygen permeate at a permeate side of the oxygen transport membrane elements or tubes and an oxygen depleted stream, wherein one or more catalysts are disposed proximate the permeate side of the oxygen transport membrane tubes or elements;
a plurality of catalyst containing reformer tubes disposed in the reactor housing juxtaposed to the oxygen transport membrane elements or tubes, the catalyst containing reformer tubes configured to produce a partially reformed synthesis gas stream by reforming a hydrocarbon containing feed and steam in the presence of the catalyst contained in the reformer tubes and heat radiated from the juxtaposed oxygen transport membrane elements or tubes;
wherein an outlet of the catalyst containing reformer tubes is fluidically coupled to the permeate side of the oxygen transport membrane elements or tubes such that the partially reformed synthesis gas flows through the oxygen transport membrane elements or tubes,
wherein hydrogen, carbon monoxide and methane in the partially reformed synthesis gas reacts with the oxygen permeate at the permeate side of the oxygen transport membrane elements or tubes to reactively drive the separation of oxygen from the oxygen containing feed stream and to produce partial oxidation reaction products and heat; and
wherein the oxygen transport membrane elements and tubes are further configured to produce a synthesis gas product stream by the partial oxidation and by further reforming of the partially reformed synthesis gas stream fed to the permeate side of the oxygen transport membrane elements or tubes in the presence of the one or more catalyst(s) and the heat.

2. The oxygen transport membrane based reforming system of claim 1 further comprising a synthesis gas cooling subsystem configured to cool the synthesis gas product stream to a temperature of about 400° C. or less.

3. The oxygen transport membrane based reforming system of claim 1 further comprising a duct burner disposed within or proximate to the oxygen transport membrane based reforming system housing and configured to combust a supplemental fuel stream and residual oxygen in the oxygen depleted stream to heat the oxygen containing feed stream via indirect heat exchange.

4. The oxygen transport membrane based reforming system of claim 1 wherein said oxygen transport membrane elements or tubes contain one or more catalysts that facilitate partial oxidation and reforming.

5. The oxygen transport membrane based reforming system of claim 4 wherein said oxygen transport membrane elements or tubes contain oxidation catalyst.

6. The oxygen transport membrane based reforming system of claim 5 wherein said oxygen transport membrane elements contain reforming catalyst.

Assignees

• Chakravarti Shrikar
• Drnevich Raymond Francis
• Shah Minish M
• Stuckert Ines C
• Praxair Technology Inc

Inventors

• Chakravarti Shrikar
• Drnevich Raymond Francis
• Shah Minish M
• Stuckert Ines C

Classifications

• C01B2203/0883

  by indirect heat exchange · CPC title

• C01B2203/0838

  by heat exchange with exothermic reactions, other than by combustion of fuel · CPC title

• C01B2203/127

  Catalytic desulfurisation · CPC title

• C01B13/0251

  by making use of membranes · CPC title

• C01B2203/1205

  Composition of the feed · CPC title