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US 8,541,616 B2Granted
Addition of a methyl hydrogen terephthalate reactor to a dimethyl terephthalate process
AssigneeEastman Chemical Company
InventorsLaura Ellen Bustamante, William Lee Cook, Brent Alan Tennant, Ashfaq Shaikh, Joseph Luther Parker, Richard Andrew Virost, Michael Visneski
Life of this patent
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Abstract
An MHT reactor is added to a DMT process to eliminate the majority of the DMT/MHT recycle back to the DMT reactor, allowing for an increase in capacity to the DMT reactors.
Claims6
A process to produce a DMT rich stream comprising:
- (a) contacting a DMT reactor feed stream in a DMT reactor zone to form a DMT composition,
- (b) contacting said DMT composition in a methanol removal zone to form a crude DMT stream,
- (c) contacting said crude DMT stream in a xylene removal zone to form a crude DMT product,
- (d) contacting said crude DMT product in a product refining zone to form an MHT rich stream,
- (e) contacting in a separate MHT reactor zone said MHT rich stream comprising MHT and DMT with methanol to produce said DMT rich stream and a methanol rich stream.
2 more elements
Dependencies are inferred from the claim text.