Academic Journal
IMPROVING THE TECHNOLOGY OF PRODUCING CELLULOSE OXIDATION-ORGANOSOLVENT WAY OF NON-WOOD PLANT MATERIALS
| Τίτλος: | IMPROVING THE TECHNOLOGY OF PRODUCING CELLULOSE OXIDATION-ORGANOSOLVENT WAY OF NON-WOOD PLANT MATERIALS |
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| Συγγραφείς: | Vurasko, A. V., Simonova, E. I., Minakova, A. R., Sivakov, V. P. |
| Πηγή: | chemistry of plant raw material; No 3 (2019); 269-276 Химия растительного сырья; № 3 (2019); 269-276 Khimiya Rastitel'nogo Syr'ya Химия Растительного Сырья |
| Στοιχεία εκδότη: | Altai State University, 2019. |
| Έτος έκδοσης: | 2019 |
| Θεματικοί όροι: | OXIDATION-ORGANOSOLVENT THE DELIGNIFICATION, НЕДРЕВЕСНОЕ РАСТИТЕЛЬНОЕ СЫРЬЕ, недревесное растительное сырье, лигнин, lignin, THE TECHNOLOGICAL SCHEME OF THE REACTOR, the technological scheme of the reactor, 01 natural sciences, 12. Responsible consumption, ЦЕЛЛЮЛОЗА, REGENERATION OF SPENT COOKING LIQUORS, ТЕХНОЛОГИЧЕСКАЯ СХЕМА, non-wood plant raw material, oxidation-organosolvent the delignification, целлюлоза, реактор, regeneration of spent cooking liquors, окислительно-органосольвентная делигнификация, технологическая схема, cellulose, 6. Clean water, 0104 chemical sciences, ЛИГНИН, РЕГЕНЕРАЦИЯ ОТРАБОТАННЫХ ВАРОЧНЫХ РАСТВОРОВ, CELLULOSE, РЕАКТОР, ОКИСЛИТЕЛЬНО-ОРГАНОСОЛЬВЕНТНАЯ ДЕЛИГНИФИКАЦИЯ, регенерация отработанных варочных растворов, NON-WOOD PLANT RAW MATERIAL, LIGNIN |
| Περιγραφή: | An improved process flow diagram for the production of cellulose by oxidation-organosolvent method from non-wood vegetable raw materials with pre-alkaline treatment and recovery of the spent cooking solution has been developed. It is shown that it is possible to obtain technical cellulose with the desired properties with repeated use of the spent cooking solution, which allows to reduce the consumption of acetic acid and fresh water by two and 1.7 times, respectively. The scheme includes the following stages: preparation of raw materials; preparation of the cooking composition and alkaline solution, alkaline treatment, cooking and washing of cellulose, recovery of the spent cooking solution, neutralization of the spent alkaline solution and the use of contaminated water. When implementing the flowcharts are formed by the following types of contaminated water: water for rinsing plant material circulates through the first and second steps of adding water with catalyst; circulating the water from flushing technical pulp in three stages – the washing water from the first washing stage is directed to the Converter; the washing water from the second stage washing sent to the first stage of the wash technical cellulose; the third step of the rinsing water is fed from the drum filter with the addition of fresh water; the concentration of sodium hydroxide in the spent alkaline solution is 1.75 %. In the neutralizer, weakly acidic water with a concentration of acetic acid of 0.83% and sodium acetate with a concentration of 2.5% is formed; weakly acidic water from the neutralizer is fed to the first stage of washing plant raw materials. Fresh water is used for the preparation of balanced peracetic acid, alkaline solution and the third stage of technical cellulose washing. Solid waste is formed in the hydraulic separator during washing of vegetable raw materials; in the tank of the spent cooking solution in the form of a precipitate from zero fiber; in the neutralizer, the washed precipitate can be used as an anti-frost additive for concrete. It is proposed to use reactor and neutralizer as the main technological equipment. |
| Τύπος εγγράφου: | Article Other literature type |
| Περιγραφή αρχείου: | application/pdf |
| ISSN: | 1029-5143 1029-5151 |
| DOI: | 10.14258/jcprm.2019035203 |
| Σύνδεσμος πρόσβασης: | http://journal.asu.ru/cw/article/download/5203/5296 http://journal.asu.ru/cw/article/view/5203 https://elar.usfeu.ru/handle/123456789/9293 http://journal.asu.ru/cw/article/download/5203/5296 https://elar.usfeu.ru/bitstream/123456789/9293/1/2-s2.0-85077842393.pdf http://journal.asu.ru/cw/article/view/5203 https://elar.usfeu.ru/handle/123456789/9293 |
| Rights: | CC BY |
| Αριθμός Καταχώρησης: | edsair.doi.dedup.....6e3f77a064009928d2cb8e4be6329baf |
| Βάση Δεδομένων: | OpenAIRE |
| ISSN: | 10295143 10295151 |
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| DOI: | 10.14258/jcprm.2019035203 |