Recovery method and recovery device for (meth) acrylic acid
US9902679B2 · kind B2 · utility
1Cited by
5References
7Claims
0Family size
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Key dates
| Filing date | Jun 24, 2015 |
| Grant date | Feb 27, 2018 |
| Priority date | — |
| Expiry date | Jun 24, 2035 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC07C51/43
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
Provided are a method and an apparatus for recovering (meth)acrylic acid. The recovering method is used to save the energy required for a process of recovering (meth)acrylic acid because a process of separating high-boiling point by-products can be omitted, and to minimize a possibility of (meth)acrylic acid polymerization during the process of recovering (meth)acrylic acid. Therefore, the recovering method is used to obtain (meth)acrylic acid with less energy in a high yield.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.