Updated and advanced technology was adopted to concentrate NaOH solution to 99% from 32% with lowest energy consumption, safety in production and low cost operation. This technology was made on experiences of numbers equipment lines including from 30% NaOH to 50% -73%-75%-99% concentration, and also 72-75% to 90-95% successful performance. Our experiences involved in
a>. 50% soda evaporation system with capacity from 20 kt / year to 250 kt/year,
b>. Flaking system in 92%-94.5% KOH (30kt/year) and 99% NaOH 60kt/year)
c>. Flaking system in 73%-75% NaOH with 30 kt/year, 40 kt/year, 50 kt/year and 60 kt/year etc.