Method for manufacturing carboxylic acid
US-2015368176-A1 · Dec 24, 2015 · US
Process for producing acetic acid
US8940932B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-8940932-B2 |
| Application number | US-201113825266-A |
| Country | US |
| Kind code | B2 |
| Filing date | Sep 27, 2011 |
| Priority date | Oct 6, 2010 |
| Publication date | Jan 27, 2015 |
| Grant date | Jan 27, 2015 |
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Abstract
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A process for stably producing high purity acetic acid comprising a condensation step for condensing and temporarily holding the lower boiling component in a decanter and discharging from the decanter; and a step for separating the lower boiling component discharged from the decanter into acetaldehyde and a liquid residue and recycling the liquid residue to the reaction system. In the condensation step, the amount of the lower boiling component to be held is controlled based on the fluctuating flow rate of the lower boiling component to be fed to the decanter.
First claim
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The invention claimed is: 1. A process for producing acetic acid, which comprises: a reaction step for continuously allowing methanol to react with carbon monoxide in the presence of a catalyst system comprising a metal catalyst, a halide salt, and methyl iodide in a carbonylation reactor, a flash evaporation step for continuously feeding a flasher with a reaction mixture from the reactor and separating a lower boiling point component (2A) containing product acetic acid and meth…
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- What does patent US8940932B2 cover?
- A process for stably producing high purity acetic acid comprising a condensation step for condensing and temporarily holding the lower boiling component in a decanter and discharging from the decanter; and a step for separating the lower boiling component discharged from the decanter into acetaldehyde and a liquid residue and recycling the liquid residue to the reaction system. In the condensat…
- Who is the assignee on this patent?
- Shimizu Masahiko, Daicel Corp
- What technology area does this patent fall under?
- Primary CPC classification C07C51/12. Mapped technology areas include Chemistry & Metallurgy.
- When was this patent published?
- Publication date Tue Jan 27 2015 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).