SU69178A1 - The method of separation of alpha-methylnaphthalene from green oil pyrolysis of petroleum products - Google Patents
The method of separation of alpha-methylnaphthalene from green oil pyrolysis of petroleum productsInfo
- Publication number
- SU69178A1 SU69178A1 SU71A SU348320A SU69178A1 SU 69178 A1 SU69178 A1 SU 69178A1 SU 71 A SU71 A SU 71A SU 348320 A SU348320 A SU 348320A SU 69178 A1 SU69178 A1 SU 69178A1
- Authority
- SU
- USSR - Soviet Union
- Prior art keywords
- methylnaphthalene
- green oil
- separation
- petroleum products
- alpha
- Prior art date
Links
Landscapes
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
Description
Известен способ выделени «-метилнафталина из продуктов пиролиза нефтепродуктов путем ректификации с последующим разложением полученного при этом пикрата, способ сложен.A known method for isolating " methylmethyl naphthalene from the products of the pyrolysis of petroleum products by rectification, followed by decomposition of the resulting picrate, is complicated.
С целью упрощени способа и обеспечени выделени чистого продукта , предложен способ выделени а-метилнафталина из зеленого масла пиролиза нефтепродуктов, состо щий в том, что соответствующую узкую фракцию зеленого масла после последовательней очистки концентрированной серной кислотой, раствором щелочи и перегонкой с паром, обрабатывают твердым сорбентом, например силикагелем, и из сорбента перегонкой с паром выдел ют а-метилнафталин.In order to simplify the process and ensure the separation of the pure product, a method has been proposed for the separation of α-methylnaphthalene from the green oil pyrolysis of petroleum products, which consists in processing the appropriate narrow fraction of green oil after successive purification with concentrated sulfuric acid, alkali solution and steam distillation. e.g. silica gel, and α-methylnaphthalene is recovered from the sorbent by steam distillation.
Способ осуществл ют следующим образом.The method is carried out as follows.
Зеленое масло подвергают вакуумной разгонке, отбирают соответствующую фракцию, которую обрабатывают концентрированной 98 /о-ной серной кислотой и подвергают вымораживанию. Очищенный таким образом от нафталина продукт промывают 20)/о-ьым раствором едкой щелочи, перегон ют с вод ным паром и обрабатывают сорбентом , например силикагелем, до полного насыщени последнего ароматическим углеводородом при температуре от минус 20 до и давлении от 1 до 50 а/.и. Насыщенный сорбент промыпают растворителем, полученный раствор подвергают рекгификации. Получают а-метилнафталин с температурой з.чстывани 24Х, d 0,9938, 1,5980.Green oil is subjected to vacuum distillation, the appropriate fraction is taken, which is treated with concentrated 98 / o-th sulfuric acid and subjected to freezing. The product purified from naphthalene in this way is washed with a 20) / ohm caustic alkali solution, distilled with steam and treated with a sorbent, for example silica gel, until the latter is completely saturated with aromatic hydrocarbon at a temperature of minus 20 to .and. The saturated sorbent is flushed with a solvent, the resulting solution is subjected to rectification. A-methylnaphthalene is obtained with a melting temperature of 24X, d = 0.9938, 1.5980.
№ 69178- 2 -No. 69178-2 -
Предмет изобретени Subject invention
Способ выделени а-метнлиафталина из зеленого масла пиролиза нефтепродуктов, отличающийс те.м, что соответствующую узкую фракцию зеленого масла после предварительной очистки последовательно концентрированной серной кислотой, раствором щелочи и перегонкой с вод ным паром обрабатывают твердым сорбентом, например силикагелем , и из сорбента выдел ют а-метилпафталин перегонкой с паром..A method for separating α-metnaphthalene from green oil pyrolysis of petroleum products, different in that the corresponding narrow fraction of green oil, after preliminary purification, is successively concentrated sulfuric acid, alkali solution and steam distillation is treated with a solid sorbent, for example silica gel, and is separated from the sorbent a-methylpaphthalene by steam distillation ..
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| SU71A SU69178A1 (en) | 1946-10-01 | 1946-10-01 | The method of separation of alpha-methylnaphthalene from green oil pyrolysis of petroleum products |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| SU71A SU69178A1 (en) | 1946-10-01 | 1946-10-01 | The method of separation of alpha-methylnaphthalene from green oil pyrolysis of petroleum products |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| SU69178A1 true SU69178A1 (en) | 1946-11-30 |
Family
ID=52394481
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| SU71A SU69178A1 (en) | 1946-10-01 | 1946-10-01 | The method of separation of alpha-methylnaphthalene from green oil pyrolysis of petroleum products |
Country Status (1)
| Country | Link |
|---|---|
| SU (1) | SU69178A1 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115073257A (en) * | 2022-08-03 | 2022-09-20 | 连云港鹏辰特种新材料有限公司 | Method for separating and purifying 1-methylnaphthalene from methylnaphthalene enrichment mother liquor |
-
1946
- 1946-10-01 SU SU71A patent/SU69178A1/en active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115073257A (en) * | 2022-08-03 | 2022-09-20 | 连云港鹏辰特种新材料有限公司 | Method for separating and purifying 1-methylnaphthalene from methylnaphthalene enrichment mother liquor |
| CN115073257B (en) * | 2022-08-03 | 2023-10-27 | 连云港鹏辰特种新材料有限公司 | Method for separating and purifying 1-methylnaphthalene from methylnaphthalene enrichment mother liquor |
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