SU114853A1 - Method of cleaning technical isoprene - Google Patents
Method of cleaning technical isopreneInfo
- Publication number
- SU114853A1 SU114853A1 SU426954A SU426954A SU114853A1 SU 114853 A1 SU114853 A1 SU 114853A1 SU 426954 A SU426954 A SU 426954A SU 426954 A SU426954 A SU 426954A SU 114853 A1 SU114853 A1 SU 114853A1
- Authority
- SU
- USSR - Soviet Union
- Prior art keywords
- isoprene
- cleaning technical
- water
- solution
- washed
- Prior art date
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- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
Description
Известные способы очистки изопрена от примеси альдегидов, состо щие в обработке щелочью, металлическим натрием или калием или действием бисульфита натри , мало эффективны из-за большой потери изопрена на параллельно идущие реакции полимеризации, коррозии аппаратуры и т. ц.The known methods of purification of isoprene from the impurity of aldehydes, consisting in the treatment with alkali, metallic sodium or potassium, or the action of sodium bisulfite, are not very effective due to the large loss of isoprene in parallel to the polymerization, corrosion of equipment, etc.
Предлагаемый способ позвол ет устранить недостатки известных способов. Сущность изобретени состоит в том, что неочищенный изопрен подвергают обработке водным раствором аммиака, основани гидроксиламина или его соли.The proposed method allows to eliminate the drawbacks of the known methods. The essence of the invention is that the crude isoprene is treated with an aqueous solution of ammonia, hydroxylamine base or its salt.
Пример 1. Равные объемы изопрена-сырца и полупроцентного водного раствора аммиака смещивают в реакторе с механической мещалкой в течение 10-15 мин., после расслаивани водный слой удал ют , а изопрен промывают вначале слабым раствором серной кислоты (5 мл H2SO4 уд. в. 1,84 на 1 л воды ) , затем трижды промывают водой , вз той в количествах, равных объему изопрена. В дальнейшемExample 1. Equal volumes of raw isoprene and a half-percent aqueous ammonia solution are shifted in a mechanically mixed reactor for 10-15 minutes, after stratification, the aqueous layer is removed, and the isoprene is washed first with a weak solution of sulfuric acid (5 ml of H2SO4 sp. 1.84 to 1 liter of water), then washed three times with water taken in quantities equal to the volume of isoprene. Further
очищенный изопрен дважды перегон ют в присутствии гидрохинона (0,1-0,2% от веса изопрена) с промежуточной осущкой над хлористым кальцием.purified isoprene is twice distilled in the presence of hydroquinone (0.1-0.2% by weight of isoprene) with intermediate grading over calcium chloride.
Прим е р 2. Равные объемы изопрена-сырца и водного раствора сернокислого гидроксиламина (16 г на 1 л воды) смешивают в реакторе с механической мещалкой в течение 10-15 мин. После отстаивани водный , слой сливают, изопрен промывают раствором серной кислоты и водой, как описано в примере 1. Содержание альдегидов при этом снижаетс от 0,1104 до 0,. Перегонка и осушка осуществл етс по примеру 1.Note 2. Equal volumes of raw isoprene and an aqueous solution of hydroxylamine sulfate (16 g per 1 liter of water) are mixed in a reactor with a mechanical blender for 10-15 minutes. After settling, the aqueous layer is drained, the isoprene is washed with a solution of sulfuric acid and water, as described in example 1. The content of aldehydes decreases from 0.1104 to 0 ,. Distillation and drying is carried out as in Example 1.
Предмет изобретени Subject invention
Способ очистки технического изопрена , отличающийс тем, что последний обрабатывают водным раствором аммиака, основани гидроксиламина или его соли, после чего очищенный изопрен выдел ют обычным способом.The method of purification of technical isoprene, characterized in that the latter is treated with an aqueous solution of ammonia, hydroxylamine base or its salt, after which the purified isoprene is isolated in the usual way.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
SU426954A SU114853A1 (en) | 1950-11-05 | 1950-11-05 | Method of cleaning technical isoprene |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
SU426954A SU114853A1 (en) | 1950-11-05 | 1950-11-05 | Method of cleaning technical isoprene |
Publications (1)
Publication Number | Publication Date |
---|---|
SU114853A1 true SU114853A1 (en) | 1957-11-30 |
Family
ID=48387188
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
SU426954A SU114853A1 (en) | 1950-11-05 | 1950-11-05 | Method of cleaning technical isoprene |
Country Status (1)
Country | Link |
---|---|
SU (1) | SU114853A1 (en) |
-
1950
- 1950-11-05 SU SU426954A patent/SU114853A1/en active
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