Terephthalic acid
| 원료 | DMT | ||||||||||||
| 생산물 | terephthalic acid | ||||||||||||
| 적용 | To produce fiber-grade terephthalic acid (PTA, pure terephthalic acid) from dimethyl terephthalate (DMT). | ||||||||||||
| 설명 | Description: (See the dimethyl terephthalate description for the steps leading to the production of this terephthalate from p-xylene and methanol.) The hydrolysis of the crude DMT is effected with water at 250 to 280℃ in the hydrolysis vessel (1) and countercurrent washing vessel (2). The aqueous reaction medium conprising methanol and byproducts is separated (3). The resultant terephthalic acid is crystallized (4). Economics: Basis is a 150,000 - tpy combined DMT/PTA plant, West German conditions, July 1989, including compressor station, active carbon absorption for off-gas, hot oil heating system and catalyst regeneration.
Investment, German conditions.
Raw materials and utilities consumption, per t product:
The production of medium pure terephthalic acid (MTA) is possible with lower energy consumption and investment figures. |
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| Properties in KDB |
Component Names and Formula
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