Original title: Způsob a zařízení ke zpracování fenolátových louhů
Title in English: The process and device for phenolate liquors treatment
First author: Assoc. Prof. Václav Linek, MSc. PhD
Short abstract:
The phenolate liquors are treated using a gaseous carbondioxide and organic solvent, which together with diluted phenols makes the separated phase in aqueous medium. The process is realized in two stages under the pressure range from 100 to 1500 kPa and under the temperature range from 40 to 100°C. In the first stage a two phase mixture is formed containing both a sodium carbonate solution and an unsaturated carbolic acid solution (0.5-0.8 mol of bonded CO2 per1 mol of Na+). In the second stage the unsaturated carbolic acid solution is purged by water and saturated by high-percentage (90% of CO2 in minimum) gaseous carbon dioxide.The saturation is carried out up to the bonded and free CO2 content 0.9 mol of CO2 per 1 mol of Na+.