Back to results
US 7,405,338 B2Granted
Dehydrogenation reactions in narrow reaction chambers and integrated reactors
AssigneeVelocys, Inc.
InventorsJohn H. Brophy, Anna Lee Tonkovich, Gary Roberts, Matthew B. Schmidt, G. Bradley Chadwell
Life of this patent
Estimating the term…
Abstract
Methods of dehydrogenating hydrocarbons to yield unsaturated compounds are described. Reactor configurations useful for dehydrogenation are also described. Hydrocarbons can dehydrogenationed, for relatively long periods of time-on-stream, in a reaction chamber having a dimension of 2 mm or less to produce H2 and an olefin. Techniques have been developed that reduce coke and allow stable, relatively long-term operation in small reactors.
Claims23
A method of dehydrogenating a hydrocarbon, comprising:
- passing a reactant stream comprising a gaseous hydrocarbon into a reaction chamber comprising a dehydrogenation catalyst and wherein the reaction chamber has an internal dimension of 2 mm or less;
- wherein the reactant stream is passed into the reaction chamber at a LHSV of at least 32;
- dehydrogenating the hydrocarbon within the reaction chamber to form a product stream comprising an olefin;
- wherein after 15 hours of continuous operation, at least 75% of the equilibrium conversion of the hydrocarbon to an olefin is achieved and wherein the yield of olefin diminishes by 10% or less over the course of the 15 hours of continuous operation and wherein the yield of olefin remains at least 25% or more.
1 more element
A method of dehydrogenating a hydrocarbon, comprising:
- passing a reactant stream comprising a gaseous hydrocarbon into a reaction chamber comprising a dehydrogenation catalyst and wherein the reaction chamber has an internal dimension of 2 mm or less;
- dehydrogenating the hydrocarbon within the reaction chamber to form a product stream comprising an olefin;
- wherein the yield of olefin decreases by less than 50% at from 0.2 and 20 hours of continuous operation without regeneration.
Dependencies are inferred from the claim text.