Method of treating mother liquor of reaction in terephthalic acid production
US4219669A · kind A · utility
39Cited by
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5Claims
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Key dates
| Filing date | Jun 8, 1979 |
| Grant date | Aug 26, 1980 |
| Priority date | — |
| Expiry date | Jun 8, 1999 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC07C51/44
- WIPO fieldOrganic fine chemistry
- WIPO sectorChemistry
Abstract
Reaction mother liquor of terephthalic acid production is treated to separate volatile component mainly composed of acetic acid and solid components composed of used catalyst or heavy metal salt(s), residual terephthalic acid and reaction by-products by using combination of a tubular type heater having at least one heating tube of a relatively small diameter and a separation chamber in which the heating tube(s) open(s) at one end thereof.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.