Apparatus and process for separating a target product from a liquid phase comprising the target product
US-2015360142-A1 · Dec 17, 2015 · US
Crossflow type filtering operation method using ceramic filter
US9150487B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-9150487-B2 |
| Application number | US-201113881021-A |
| Country | US |
| Kind code | B2 |
| Filing date | Oct 25, 2011 |
| Priority date | Oct 26, 2010 |
| Publication date | Oct 6, 2015 |
| Grant date | Oct 6, 2015 |
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Abstract
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Provided is a simple filtering operation method capable of conducting a filtering operation without clogging in a ceramic filter for a long period of time, in the operation of filtering fine crystals of terephthalic acid in an oxidation reaction mother liquor obtained in a process of terephthalic acid production by a cross-flow filtration using the ceramic filter. The present invention can be accomplished by conducting an operation for filtering the fine crystals and a back washing operation with a filtrate while maintaining a flowing circulation operation of the oxidation reaction mother liquor under predetermined conditions.
First claim
Opening claim text (preview).
The invention claimed is: 1. A filtering operation method for filtering fine crystals contained in an oxidation reaction mother liquor obtained in a terephthalic acid production process by a cross-flow filtration using a ceramic filter while conducting a flowing circulation operation of the oxidation reaction mother liquor, the method comprising: conducting (I) an operation for filtering the fine crystals; and conducting (II) a back washing operation with a filtrate while mainta…
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Operations & Transport · mapped topic
Operations & Transport · mapped topic
- C07C51/43Primary
Chemistry & Metallurgy · mapped topic
Operations & Transport · mapped topic
Operations & Transport · mapped topic
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Frequently asked questions
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- What does patent US9150487B2 cover?
- Provided is a simple filtering operation method capable of conducting a filtering operation without clogging in a ceramic filter for a long period of time, in the operation of filtering fine crystals of terephthalic acid in an oxidation reaction mother liquor obtained in a process of terephthalic acid production by a cross-flow filtration using the ceramic filter. The present invention can be a…
- Who is the assignee on this patent?
- Zaima Fumiya, Hoshishima Nirou, Uozumi Kazutoshi, and 2 more
- What technology area does this patent fall under?
- Primary CPC classification C07C51/43. Mapped technology areas include Chemistry & Metallurgy.
- When was this patent published?
- Publication date Tue Oct 06 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).