RU2012102719A - METHOD FOR CLEANING DIETHANOLAMINE SOLUTION FROM IMPURITIES - Google Patents
METHOD FOR CLEANING DIETHANOLAMINE SOLUTION FROM IMPURITIES Download PDFInfo
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- RU2012102719A RU2012102719A RU2012102719/05A RU2012102719A RU2012102719A RU 2012102719 A RU2012102719 A RU 2012102719A RU 2012102719/05 A RU2012102719/05 A RU 2012102719/05A RU 2012102719 A RU2012102719 A RU 2012102719A RU 2012102719 A RU2012102719 A RU 2012102719A
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- RU
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- diethanolamine
- distillation column
- vapor
- fractionated
- kpa
- Prior art date
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- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
Abstract
1. Способ очистки раствора диэтаноламина от примесей, включающий нагрев загрязненного раствора диэтаноламина, содержащего продукты деструкции диэтаноламина и термостабильные соли и последующее фракционирование полученной парожидкостной смеси, отличающийся тем, что указанную парожидкостную смесь фракционируют в ректификационной колонне при давлении 100-110 кПа и температуре куба 170-180°С, отгоняя воду, далее полученный кубовый остаток фракционируют в вакуумной ректификационной колонне при давлении 1,3-2 кПа и температуре куба 180-185°С с получением дистиллята - очищенного диэтаноламина и кубового остатка, содержащего продукты деструкции диэтаноламина и термостабильные соли.2. Способ по п.1, отличающийся тем, что в кубовую часть ректификационной колонны подают азот, а в кубовую часть вакуумной ректификационной колонны подают азот или перегретый водяной пар.1. A method of purifying a diethanolamine solution from impurities, comprising heating a contaminated diethanolamine solution containing diethanolamine degradation products and thermostable salts and subsequent fractionation of the obtained vapor-liquid mixture, characterized in that said vapor-liquid mixture is fractionated in a distillation column at a pressure of 100-110 kPa and a cube temperature of 170 -180 ° C, driving off water, then the resulting bottoms are fractionated in a vacuum distillation column at a pressure of 1.3-2 kPa and a temperature of 180-185 ° C from the floor HAND distillate - purified diethanolamine and bottoms, containing degradation products of diethanolamine and thermostable soli.2. The method according to claim 1, characterized in that nitrogen is supplied to the still part of the distillation column, and nitrogen or superheated water vapor is supplied to the still part of the vacuum distillation column.
Claims (2)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| RU2012102719/05A RU2491981C1 (en) | 2012-01-26 | 2012-01-26 | Method for cleaning diethanolamine solution of admixtures |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| RU2012102719/05A RU2491981C1 (en) | 2012-01-26 | 2012-01-26 | Method for cleaning diethanolamine solution of admixtures |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| RU2012102719A true RU2012102719A (en) | 2013-08-10 |
| RU2491981C1 RU2491981C1 (en) | 2013-09-10 |
Family
ID=49159040
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| RU2012102719/05A RU2491981C1 (en) | 2012-01-26 | 2012-01-26 | Method for cleaning diethanolamine solution of admixtures |
Country Status (1)
| Country | Link |
|---|---|
| RU (1) | RU2491981C1 (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| RU2695209C1 (en) * | 2019-01-11 | 2019-07-22 | Общество с ограниченной ответственностью "Научно-исследовательский институт природных газов и газовых технологий - Газпром ВНИИГАЗ" | Apparatus for regenerating an aqueous solution of methanol |
| RU2695211C1 (en) * | 2019-01-11 | 2019-07-22 | Общество с ограниченной ответственностью "Научно-исследовательский институт природных газов и газовых технологий - Газпром ВНИИГАЗ" | Method of regenerating aqueous solution of methanol |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| SU682508A1 (en) * | 1976-08-02 | 1979-08-30 | Предприятие П/Я В-8469 | Process for preparation of amino alcohols |
| RU2087474C1 (en) * | 1994-08-16 | 1997-08-20 | Российский научный центр "Прикладная химия" | Method of recovery of triethylene diamine |
| US5993608A (en) * | 1997-04-25 | 1999-11-30 | Canadian Chemical Reclaiming Ltd. | Process for recovering processing liquids |
| RU2304010C2 (en) * | 2004-06-15 | 2007-08-10 | Войсковая часть 61469 | Method of reusing impurities-bearing monoethanolamine |
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2012
- 2012-01-26 RU RU2012102719/05A patent/RU2491981C1/en active
Also Published As
| Publication number | Publication date |
|---|---|
| RU2491981C1 (en) | 2013-09-10 |
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