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US 6,610,177 B2Granted
Apparatus and process for the high yield production of methyl methacrylate or methacrylic acid
AssigneeRohm and Haas Company
InventorsChorng-Shyuan Tsay, Michael Stanley DeCourcy, I-Hwa Midey Chang-Mateu, Heather Granzin Thompson, Diana Elaine Chase
Life of this patent
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Abstract
A high yield process for the production of methyl methacrylate or methacrylic acid and an apparatus for increasing the yield in a process for the production of methyl methacrylate or methacrylic acid are disclosed.
Claims5
A thermal conversion apparatus, comprising:
- at least one pipe with means for maintaining plug flow, wherein the at least one pipe has at least one turn and the at least one turn has a Cheng Rotation Vane.
A thermal conversion apparatus, comprising:
- at least one pipe with means for maintaining plug flow, wherein plug flow is at least partially maintained by turns in the at least one pipe, said turns being smooth.
A thermal conversion apparatus, comprising:
- at least one pipe with means for maintaining plug flow, wherein plug flow is at least partially maintained by an expansion at the beginning of the thermal conversion apparatus, wherein said expansion is gradual so as to minimize back mixing of reactants entering the at least one pipe.
A thermal conversion apparatus, comprising:
- at least one pipe with means for maintaining plug flow, wherein plug flow is at least partially maintained by a constriction at the end of the thermal conversion apparatus wherein said constriction is gradual so as to minimize back mixing of reactants and products exiting the at least one pipe.
A thermal conversion apparatus, comprising:
- at least one pipe with means for maintaining plug flow, wherein plug flow is at least partially maintained by selecting the diameter of the pipe.
Dependencies are inferred from the claim text.