US 2007/0167533 A1Published application

Method for Direct-Oxygenation of Alkane Gases

AssigneeGas Technologies LLC

InventorsNathan Pawlak, Robert Carr, Roger Grunch

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Abstract

A method for alkyl oxygenate (e.g., methanol) manufacture via partial oxidation of alkane (methane) uses an injectively-mixed backmixing reaction chamber in fluid communication with a tubular-flow reactor. Alkyl free radicals are induced in the backmixing reaction chamber prior to being fed through a flow-restriction baffle to the tubular-flow reactor. Injective intermixing of feed streams agitates the backmixing reaction chamber. In one embodiment, a variable position flow restriction baffle is axially moved to commensurately modify the backmixing reaction chamber and tubular-flow reactor volumes. In another embodiment, the tubular-flow reactor is quenched with a variable position quenching input. The method further provides for condensing the output stream from the reaction system in a condensing scrubber and also for recycling a portion of the scrubbed output stream to the reactor system.

Claims16

Dependent claims

A method for manufacturing at least one alkyl oxygenate through partial oxidation reacting of alkane from an alkane-containing gas feed stream and of oxygen from an oxygen-containing gas feed stream, said method comprising:

providing a reactor system having an injectively-mixed backmixing reaction chamber in fluid communication with a tubular-flow reactor;
feeding said alkane-containing feed stream and said oxygen-containing feed stream to said injectively-mixed backmixing reaction chamber;
inducing alkyl free radical formation in said injectively-mixed backmixing reaction chamber to yield an injectively-mixed backmixing reaction chamber product stream comprising oxygen, said alkane, and at least a portion of said alkyl free radicals;
feeding said injectively-mixed backmixing reaction chamber product stream to a tubular-flow reactor;
and
reacting said injectively-mixed backmixing reaction chamber product stream into said alkyl oxygenate in said tubular-flow reactor;
wherein said alkane is selected from the group consisting of methane, ethane, propane, and butane.

4 more elements

Dependencies are inferred from the claim text.

Facts

Application: 11/685,867Filed 14 Mar 2007
Priority: 29 Jul 2004
Published: 19 Jul 2007
Term ends: Not estimatedThe source records don’t support an estimate.

Classification34 codes

B01F 23/10
Mixing according to the phases to be mixed, e.g. dispersing or emulsifying: mixing gases with gases
B01F 25/3131
Wherein additional components are introduced in the centre of the conduit: with additional mixing means other than injector mixers, e.g. screens,…
B01F 25/31331
Characterised by the specific design of the injector: perforated, multi-opening, with a plurality of holes
B01F 25/45
Static mixers: mixers in which the materials to be mixed are pressed together through orifices or interstitial spaces, e.g. between beads

Family

Application10/901,717Continuation in part · filed 29 Jul 2004
Application11/319,093Continuation in part · filed 27 Dec 2005
Application11/351,532Continuation in part · filed 10 Feb 2006
Application11/432,692Continuation in part · filed 11 May 2006
Application11/446,371Continuation in part · filed 2 Jun 2006
Application11/526,824Continuation in part · filed 25 Sep 2006
Application11/685,867Continuation in part · filed 14 Mar 2007
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