Production of vinyl chloride from a methane conversion process
AssigneeUop LLC
InventorsJeffery C. Bricker, John Q. Chen, Peter K. Coughlin
Life of this patent
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Abstract
Methods and systems are provided for converting methane in a feed stream to acetylene. The method includes processing the acetylene to form a hydrocarbon stream having vinyl chloride. The hydrocarbon stream is introduced into a supersonic reactor and pyrolyzed to convert at least a portion of the methane to acetylene. The reactor effluent stream is be treated to convert acetylene to other hydrocarbon processes. The method according to certain aspects includes controlling the level of carbon monoxide in the hydrocarbon stream to limit downstream side reactions in the downstream processing units.
Claims14
A method for producing vinyl chloride comprising:
- introducing a hydrocarbon feed stream comprising methane into a supersonic reactor;
- pyrolyzing the methane in the supersonic shock wave reactor to form a reactor effluent stream comprising acetylene wherein pyrolyzing the methane includes heating the methane to a temperature of between about 1200° C. and about 3500° C. for a residence time of between about 0.5 ms and 100 ms;
- treating the reactor effluent stream to remove CO to a level below about 100 wt-ppm of the reactor effluent stream to generate a treated reactor effluent stream;
- passing the treated reactor effluent stream to a hydrogenation reactor to form a second effluent stream comprising ethylene;
- and
- passing the second effluent stream to a vinyl chloride reactor to generate a vinyl chloride effluent stream.
A method for producing vinyl chloride comprising:
- introducing a hydrocarbon feed stream comprising methane into a supersonic reactor;
- pyrolyzing the methane in the supersonic shock wave reactor to form a first reactor effluent stream comprising acetylene;
- wherein pyrolyzing the methane includes heating the methane to a temperature of between about 1200° C. and about 3500° C. for a residence time of between about 0.5 ms and 100 ms;
- treating the first reactor effluent stream to remove CO to a level below about 100 wt-ppm of the reactor effluent stream to generate a treated first reactor effluent stream;
- passing the treated first reactor effluent stream to a acetylene enrichment zone to form a second effluent stream comprising enriched acetylene;
- and
- passing the second effluent stream and a hydrogen chloride stream to a hydrochlorination reactor to generate a vinyl chloride effluent stream.
A method for producing vinyl chloride comprising:
- introducing a hydrocarbon feed stream comprising methane into a supersonic reactor;
- pyrolyzing the methane in the supersonic shock wave reactor to form a first reactor effluent stream comprising acetylene;
- wherein pyrolyzing the methane includes heating the methane to a temperature of between about 1200° C. and about 3500° C. for a residence time of between about 0.5 ms and 100 ms;
- treating the first reactor effluent stream to remove CO to a level below about 100 wt-ppm of the reactor effluent stream to generate a treated first reactor effluent stream;
- passing the treated first reactor effluent stream to a hydrogenation reactor to form a second effluent stream comprising ethylene;
- and
- passing the second effluent stream to a chlorination reactor;
- passing a stream comprising chlorine to the chlorination reactor, wherein the chlorination reactor generates a process stream comprising dichloroethane;
- passing the dichloroethane process stream to a decomposition reactor to generate a decomposition effluent stream comprising vinyl chloride and hydrogen chloride;
- passing the decomposition effluent stream to a product recovery unit to generate a product stream comprising vinyl chloride.
Dependencies are inferred from the claim text.