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Sintered Metal Air Injector/Air Mixer

IP.com Disclosure Number: IPCOM000206110D
Publication Date: 2011-Apr-13
Document File: 3 page(s) / 41K

Publishing Venue

The IP.com Prior Art Database

Abstract

Air/reformate mixer where secondary fluid is introduced perpendicularly to the main flow stream, and upstream of a flow redistributing porous metal matrix.

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Title:

Sintered Metal Air Injector/Air Mixer

Abstract:

Air/reformate mixer where secondary fluid is introduced perpendicularly to the main flow stream, and upstream of a flow redistributing porous metal matrix.

 

Disclosure:

The preferential oxidation reaction in fuel processors requires the addition of air to the reformate stream.  Additionally, the air and reformate streams must be thoroughly mixed, such that the velocity and concentration gradients are uniform across the inlet face of the catalyst bed.  Both the pressure drop and the mixing length required to achieve such mixing are also of concern.

Air injection and mixing are design challenges realized in transportation, residential, and the commercial programs.  Effective mixing of the reformate and air streams is critical for optimal Prox performance since non-homogeneous mixing adversely affects the catalyst and its effectiveness. 

 

Generally speaking, the challenge is to inject air into a reformate stream in such a manner that adequate mixing may occur in a minimal volume while incurring minimal pressure drop.   The mixer/air injection design should respond to three functions: 1) air injection 2) flow distribution and 3) mixing, all of which are coupled

The proposed solution includes air injection such that the secondary fluid is introduced perpendicular to the main flow stream, and upstream of a flow redistributing porous metal matrix.  Porous sintered metal and sintered fiber matices may act to generate constant velocity profiles at the exit face when fluid is passed though the material.  It follows that a mechanism that effectively redistributes both the primary and secondary fluid streams should result in constant velocity and concentration gradients or effective mixing at the exit of the mixer assembly.  The novelty of this concept is in using a s...