Mixing Reactor and Related Process
US-2015367318-A1 · Dec 24, 2015 · US
Method for hydrolysing acetone cyanohydrin
US9458083B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-9458083-B2 |
| Application number | US-201314384273-A |
| Country | US |
| Kind code | B2 |
| Filing date | Mar 6, 2013 |
| Priority date | Mar 30, 2012 |
| Publication date | Oct 4, 2016 |
| Grant date | Oct 4, 2016 |
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- Title
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- Abstract
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Abstract
Official abstract text for this publication.
The present invention relates to a process for hydrolysis of acetone cyanohydrin (ACH) by means of sulphuric acid within the ACH sulpho process for preparation of methacrylic acid (MAA) or methyl methacrylate (MMA).
First claim
Opening claim text (preview).
The invention claimed is: 1. A process for hydrolysis of acetocyanohydrin, the process comprising: preparing methyl methacrylate in a loop reactor by using sulphuric acid as a precursor, wherein at least one heat exchanger present in the loop reactor is equipped with turbulators, at least one reaction component is fed into the loop reactor via a metering ring, which is installed externally and immediately upstream of a pump with a pump housing in the loop reactor, the at least one heat exchanger equipped with turbulators is positioned downstream of a metered addition of sulphuric acid and of acetocyanohydrin in flow direction, and the turbulators are turbulators with 100-1200 turns/m. 2. The process according to claim 1 , wherein the metering ring is integrated into the pump housing. 3. The process according to claim 1 , wherein corkscrew or piperbrush structures are installed as turbulators into the at least one heat exchanger. 4. The process according to claim 1 , wherein helically wound metal tapes are used on turbulators in the loop reactor. 5. The process according to claim 1 , wherein the at least one heat exchanger is a shell-and-tube heat exchanger, and at least 50-70% of tubes of the shell-and-tube heat exchanger are equipped with turbulators. 6. The process according to claim 1 , wherein the turbulators are turbulators with 500-750 turns/m. 7. The process according to claim 1 , wherein the turbulators are turbulators with 300-900 turns/m.
Assignees
Inventors
Classifications
- B01J19/2415Primary
Tubular reactors · CPC title
from carboxylic acid amides · CPC title
twisted · CPC title
from nitriles by transformation of cyano groups into carboxamide groups · CPC title
Controlling the temperature of the process · CPC title
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Frequently asked questions
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- What does patent US9458083B2 cover?
- The present invention relates to a process for hydrolysis of acetone cyanohydrin (ACH) by means of sulphuric acid within the ACH sulpho process for preparation of methacrylic acid (MAA) or methyl methacrylate (MMA).
- Who is the assignee on this patent?
- Selbach Arndt, Sartorelli Lorenza, Perl Andreas, and 7 more
- What technology area does this patent fall under?
- Primary CPC classification B01J19/2415. Mapped technology areas include Operations & Transport.
- When was this patent published?
- Publication date Tue Oct 04 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).