FIELD: chemistry.
SUBSTANCE: group of inventions relates to a method of extracting carboxylic acid from a fraction containing carboxylic acid and impurities, as well as to a method of producing treated wood. Method of extracting carboxylic acid from a fraction containing a carboxylic acid and impurities involves directing said fraction to a gas blowing operation and extracting, at least, a purified carboxylic acid fraction. Content of carboxylic acid in the fraction to which the blowing-up procedure is applied is not practically reduced by the blowing-off operation, and the fraction containing carboxylic acid and impurities contains halogenated hydrocarbons and/or halogen anhydrides of carboxylic acids.
EFFECT: technical result consists in efficient extraction of carboxylic acid, as well as creation of method, having economic and environmental advantages.
16 cl, 3 ex
| Title | Year | Author | Number |
|---|---|---|---|
| METHOD OF EXTRACTING CARBOXYLIC ACID AND METHOD OF TREATING WOOD | 2015 |
|
RU2687235C2 |
| METHOD OF PRODUCING CARBOXYLIC ACID ANHYDRIDE | 2015 |
|
RU2732578C2 |
| USE OF AT LEAST ONE BY-PRODUCT OF INDUSTRIAL CLEANING OF VEGETABLE OILS FOR PRODUCING PURIFIED SET OF UNSAPONIFIED SUBSTANCES OF PRODUCT VEGETABLE OIL | 2012 |
|
RU2590723C2 |
| METHOD OF SYNTHESIS OF ACETIC ACID | 1997 |
|
RU2187494C2 |
| METHOD OF PRODUCING TRIFLUOROMETHANESULPHINIC ACID | 2008 |
|
RU2471777C2 |
| METHOD OF PRODUCING TRIFLUOROMETHANE SULPHINIC ACID SALT | 2008 |
|
RU2468005C2 |
| METHOD OF PURIFYING ACETIC ACID AND/OR ACETIC ANHYDRIDE FROM IODIDES ADMIXTURES | 1992 |
|
RU2072981C1 |
| METHOD OF PRODUCING POLYETHER ALCOHOLS FROM ALKYLENE OXIDES | 2010 |
|
RU2560724C2 |
| METHODS FOR OBTAINING BIOPLASTICS AND BIOPRODUCTS FROM MANURE | 2017 |
|
RU2750146C2 |
| METHOD OF WOOD ACETYLATION | 2016 |
|
RU2719997C2 |
