Process for distillative purification of unsaturated carboxylic anhydrides
US-12479789-B2 · Nov 25, 2025 · US
Systems and methods for processing variable acetyl streams
US9415366B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-9415366-B2 |
| Application number | US-201313827124-A |
| Country | US |
| Kind code | B2 |
| Filing date | Mar 14, 2013 |
| Priority date | Dec 31, 2012 |
| Publication date | Aug 16, 2016 |
| Grant date | Aug 16, 2016 |
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Abstract
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The invention provides systems and processes for concentrating acetic acid and acetic anhydride streams. The systems allow operation of equipment used for such concentrations in two or more modes of operation. At least one mode is intended to produce a concentrated or purified acetic acid stream. At least one other mode is intended to produce a concentrated or purified acetic anhydride stream.
First claim
Opening claim text (preview).
What is claimed is: 1. A system for processing at least one acetyl feed composition, such acetyl feed composition comprising acetic acid and acetic anhydride, wherein the system comprises: a first separation zone configured in a manner to separate a first separated stream from a first concentrated stream, and further configured such that the separation zone can be operated in an acid mode and can be operated in an anhydride mode; at least one hydrolysis zone capable of operating…
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Chemistry & Metallurgy · mapped topic
Chemistry & Metallurgy · mapped topic
- C07C51/573Primary
Chemistry & Metallurgy · mapped topic
Chemistry & Metallurgy · mapped topic
- B01J19/00Primary
Operations & Transport · mapped topic
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Frequently asked questions
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- What does patent US9415366B2 cover?
- The invention provides systems and processes for concentrating acetic acid and acetic anhydride streams. The systems allow operation of equipment used for such concentrations in two or more modes of operation. At least one mode is intended to produce a concentrated or purified acetic acid stream. At least one other mode is intended to produce a concentrated or purified acetic anhydride stream.
- Who is the assignee on this patent?
- Eastman Chem Co
- What technology area does this patent fall under?
- Primary CPC classification C07C51/573. Mapped technology areas include Chemistry & Metallurgy.
- When was this patent published?
- Publication date Tue Aug 16 2016 00:00:00 GMT+0000 (Coordinated Universal Time) (B2). Legal status and post-grant events are not shown on this page.
- What related patents are in patentsdb?
- We list 8 related publications on this page (citations in our corpus or others sharing the same primary CPC).