SU205546A1 - METHOD OF OBTAINING CELLULOSE WITH NATURAL WOOD WARKING - Google Patents
METHOD OF OBTAINING CELLULOSE WITH NATURAL WOOD WARKINGInfo
- Publication number
- SU205546A1 SU205546A1 SU874892A SU874892A SU205546A1 SU 205546 A1 SU205546 A1 SU 205546A1 SU 874892 A SU874892 A SU 874892A SU 874892 A SU874892 A SU 874892A SU 205546 A1 SU205546 A1 SU 205546A1
- Authority
- SU
- USSR - Soviet Union
- Prior art keywords
- warking
- natural wood
- obtaining cellulose
- wood
- cellulose
- Prior art date
Links
- 239000002023 wood Substances 0.000 title description 7
- 229920002678 cellulose Polymers 0.000 title description 4
- 239000001913 cellulose Substances 0.000 title description 4
- OAKJQQAXSVQMHS-UHFFFAOYSA-N hydrazine Chemical compound NN OAKJQQAXSVQMHS-UHFFFAOYSA-N 0.000 description 10
- BVKZGUZCCUSVTD-UHFFFAOYSA-N Carbonic acid Chemical compound OC(O)=O BVKZGUZCCUSVTD-UHFFFAOYSA-N 0.000 description 4
- 238000010411 cooking Methods 0.000 description 4
- 238000000034 method Methods 0.000 description 2
- HEMHJVSKTPXQMS-UHFFFAOYSA-M sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 description 2
- ISWSIDIOOBJBQZ-UHFFFAOYSA-N Phenol Natural products OC1=CC=CC=C1 ISWSIDIOOBJBQZ-UHFFFAOYSA-N 0.000 description 1
- 239000003513 alkali Substances 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 238000009835 boiling Methods 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 238000005755 formation reaction Methods 0.000 description 1
- 229920005610 lignin Polymers 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 229920003986 novolac Polymers 0.000 description 1
- 239000003638 reducing agent Substances 0.000 description 1
- 150000003839 salts Chemical class 0.000 description 1
- 239000011780 sodium chloride Substances 0.000 description 1
- 235000011121 sodium hydroxide Nutrition 0.000 description 1
Description
Известны попытки получени целлюлозы из древесины нри натронной варке. При этом в качестве восстановител примен ли двух- и трехатомные фенолы орто-р да, которые конденсируют лигнин, соедин сь с ним по реакции , аналогичной образованию новолаков из феноло-спиртов, и затем добавл ли около 3% гидразина, -вз того в виде соли. Однако это не дало ожидаемых результатов.There have been known attempts to obtain cellulose from wood by soda cooking. At the same time, dihydric and triatomic ortho-phenolic phenols were used as a reducing agent, which condense the lignin, combine with it by a reaction similar to the formation of novolacs from phenol-alcohols, and then add about 3% of hydrazine, in the form of salt. However, this did not produce the expected results.
Предлагаемый способ ускор ет процесс делигнификации и увеличивает выход целлюлозы .The proposed method speeds up the delignification process and increases the cellulose yield.
Это достигаетс тем, что в варочный натронный щелок гидразин ввод т в свободном виде в количестве от 5 до 25% от веса древесины .This is achieved by the fact that hydrazine in free form in an amount of 5 to 25% by weight of wood is introduced into the cooking soda liquor.
Натронную варку провод т при следующих услови х: добавка гидразина 5-25% от веса древесины; расход щелочи 20-25% от веса древесины; жидкостный модуль 1 : 5 или 1 :6; подъем температуры до 170°С 1-2 час; выдерживание при 170°С 1,5-2 час.Soda cooking is carried out under the following conditions: the addition of hydrazine 5-25% by weight of wood; alkali consumption of 20-25% by weight of wood; liquid module 1: 5 or 1: 6; temperature rise to 170 ° C for 1-2 hours; keeping at 170 ° C 1.5-2 hours.
Предмет изобретени Subject invention
Способ получени целлюлозы при натронной варке древесины, с добавкой гидразина, отличающийс тем, что, с целью ускорени процесса делигнификации и увеличени выхода целлюлозы, в варочный натронный щелок гидразин ввод т в свободном виде в количестве от 5 до 250/0 от веса древесины.The method of producing pulp during soda boiling of wood, with the addition of hydrazine, characterized in that, in order to accelerate the process of delignification and increase the yield of cellulose, hydrazine is introduced into the cooking soda lye in an amount of from 5 to 250/0 by weight of wood.
Related Child Applications (2)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| SU802894153A Addition SU964059A2 (en) | 1980-03-11 | 1980-03-11 | Bucket for loading lump material |
| SU813251566A Addition SU994633A2 (en) | 1981-03-02 | 1981-03-02 | Bucket for loading lump material |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| SU205546A1 true SU205546A1 (en) |
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