Method and arrangement constitution in order includes the combination type stripper/the condenser, to make the pollution condensation liquid pure

摘要

(57) Abstract While with the type stripper/introducing this method, into the condenser the process steam and impure condensation liquid from last evaporation stage combining this invention, when producing the cellulose pulp, being the method of making the impure condensation liquid which it occurs pure, in regard to the method of including the fact that it evaporates the used solution by utilizing the purification plant which possesses several condensers which are connected to series, trying to let flow to opposite direction to the process steam and the condensation liquid, separating the volatile chemical compound of the condensation liquid with that, simultaneously indirectly cooling, in vaporIt condenses the main part of the taking in and process steam, furthermore lets flow the remaining process steam gradually, cools the process steam continually and indirectly condenses the water and the terebene to beginning and collects, condenses methanol, separating the condensation liquid which was collected from the terebene, it removes from the plant, re-introduces into the stripper/the condenser and removes methanol from the plant, it collects at bottom of the type stripper/the condenser combining the primary purification condensation liquid, removes from the plant and or furthermore it features that it refines. This invention regards also the purification plant.