| Abstract:Soxhlet extraction method was used to determinate the content of pitch and stickies in the paper-making reconstituted tobacco slurry. The results showed that the appropriate extraction conditions were as follows: extraction solvent was methylene chloride, extraction temperature was 60℃, extraction time was 3 h.The content of pitch and stikies varied with the slurry flow direction, there were two significant decreases, two non significant decreases and a sudden increase of the content of pitch and stikies in the process. The main reason for significant decreases was the addition of wood slurry and dewatering of the former respectively, and the sudden increase was mainly due to the recycling of white water. The recycling of white water seriously influenced the content of pitch and stickies in the slurry. |
