Processes and systems for improved alkyl ester production from feedstocks containing organic acids using low pressure alkylation
US11851403B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | May 10, 2023 |
| Grant date | Dec 26, 2023 |
| Priority date | — |
| Expiry date | May 10, 2043 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC07C2601/20
- WIPO fieldOrganic fine chemistry
- WIPO sectorChemistry
Abstract
Provided are industrial processes for producing an organic acid alky ester from a feedstock containing organic acids and/or saponifiables, comprising: countercurrently contacting a feedstock with an organic alkylating reagent over two or more vessels or stages at temperature between 100° C. and 400° C. and pressure between 0.1 barg and 355 barg while simultaneously removing water and/or glycerin with unreacted alkylating reagent from the final vessel or stage to result in a first reaction method product containing organic acid alkyl esters, followed by a choice of using the alkyl esters as-is, purifying the organic acid alkyl esters from the first reaction product mixture or subjecting the first reaction product mixture to an additional transesterification reaction to convert saponifiables into additional organic acid alkyl esters, then purifying the organic acid alkyl esters from this second reaction method product.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.