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US 2012/0234516 A1Published application
Energy recovery from mother liquid in paraxylene crystallization process
AssigneeGTC Technology US LLC
InventorsWeihua Jin, Zhongyi Ding
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Abstract
Methods for recovering energy from a mother liquor stream in paraxylene crystallization processes are disclosed herein. The low temperature energy from the mother liquor is optimally utilized to reduce the refrigeration burden on the crystallization process.
Claims14
A method for recovering energy from a mother liquor in a PX crystallization process, said method comprising:
- providing a feed stream to a PX crystallization unit;
- providing a first crystallizer or heat exchanger to recover low temperature energy from low temperature mother liquor;
- providing a second heat exchanger to recover energy from intermediate temperature mother liquor;
- and
- providing a third heat exchanger to recover energy from high temperature mother liquor;
- wherein the feed stream is cooled down by the mother liquor.
3 more elements
A method for recovering energy from a mother liquor in a PX crystallization process, said method comprising:
- providing a feed stream to a PX crystallization unit;
- providing a first crystallizer or heat exchanger to recover low temperature energy from low temperature mother liquor;
- providing a second heat exchanger to recover energy from intermediate temperature mother liquor;
- providing a third heat exchanger to recover energy from high temperature mother liquor;
- and providing a fourth heat exchanger that reduces the temperature of the feed stream.
2 more elements
Dependencies are inferred from the claim text.