SU550374A1 - The method of purification of tetrafluorodibromoethane - Google Patents
The method of purification of tetrafluorodibromoethaneInfo
- Publication number
- SU550374A1 SU550374A1 SU2173605A SU2173605A SU550374A1 SU 550374 A1 SU550374 A1 SU 550374A1 SU 2173605 A SU2173605 A SU 2173605A SU 2173605 A SU2173605 A SU 2173605A SU 550374 A1 SU550374 A1 SU 550374A1
- Authority
- SU
- USSR - Soviet Union
- Prior art keywords
- tetrafluorodibromoethane
- activated carbon
- tetrafluoroethylene
- bromine
- paragraphs
- Prior art date
Links
Landscapes
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
Description
Процесс лучше вести непрерывно, пропуска тетрафтордибромэтан с объемной скоростью 0,5-12 ч-ЧIt is better to conduct the process continuously, skip tetrafluorodibromoethane with a bulk velocity of 0.5-12 h-h
Предпочтительно тетрафторэтилен пропускать через активированный уголь, с целью его регенерации, с объемной скоростью 14- 20 Ч-1.Preferably tetrafluoroethylene is passed through activated carbon, in order to regenerate it, with a bulk velocity of 14-20 h-1.
В качестве активированного угл примен ют угли марки АГ-3, АГ-5, АГ-61, СКТ, БАУ. Процитку угл производ т раствором кальцинированной или каустической соды или едкой щелочи, после чего уголь высушивают. После насышени сорбента бромом его регенерируют , пропуска через активированный уголь тетрафторэтилен. При этом бром реагируют с тетрафторэтиленом с образованием тетрафтордибромэтана , что позвол ет уменьшить потери брома.As activated carbon, AG-3, AG-5, AG-61, CKT, BAU coals are used. Carbon is produced by soda or caustic soda or caustic alkali, after which the coal is dried. After the sorbent is increased by bromine, it is regenerated by passing tetrafluoroethylene through activated carbon. In this case, bromine is reacted with tetrafluoroethylene to form tetrafluorodibromoethane, which reduces bromine losses.
Предлагаемый способ испытан на опытной установке.The proposed method has been tested on a pilot plant.
Пример. Две последовательно соединенные колонны диаметром 250 мм и высотой 2500 мм заполн ют: колонну 1-углем АГ-3, колонну 2 - углем АГ-3 с нанесенным на него едким натром в количестве 12% от веса угл . Через систему с объемной скоростью 0,5 пропускают тетрафтордибромэтан с содержанием брома 0,92%, бромистого и хлористого водорода - в сумме 0,05%. Пропускают до насышени угл в первой колонне 500 кг тетрафтордибромэтана-сырца и провод т регенерацию угл первой колонны продувкой тетрафторэтилена с объемной скоростью 14-16 ч Затем через систему повторно пропускают 750 кг тетрафтордибромэтана, при этом тетрафтордибромэтан на выходе из системы получают нейтральным.Example. Two successively connected columns with a diameter of 250 mm and a height of 2500 mm are filled: the column with 1 AG-3 coal, and the column 2 with AG-3 coal with caustic soda deposited on it in an amount of 12% by weight of coal. Through a system with a volume rate of 0.5, tetrafluorodibromoethane is passed with a bromine content of 0.92%, and methyl bromide and hydrogen chloride in the amount of 0.05%. 500 kg of tetrafluorodibromoethane raw are passed to coal in the first column and regeneration of the coal of the first column is carried out by blowing tetrafluoroethylene with a bulk velocity of 14-16 h. Then 750 kg of tetrafluorobibroethane are re-passed through the system, and the tetrafluoridibromoethane is re-passed through the system to neutralize.
При отборе пробы после регенерации тетрафторэтилена на присутствие брома иодометрически (качественно) установлено его отсутствие .When sampling after regeneration of tetrafluoroethylene for the presence of bromine, its absence was iodometrically (qualitatively) established.
Claims (5)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
SU2173605A SU550374A1 (en) | 1975-09-11 | 1975-09-11 | The method of purification of tetrafluorodibromoethane |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
SU2173605A SU550374A1 (en) | 1975-09-11 | 1975-09-11 | The method of purification of tetrafluorodibromoethane |
Publications (1)
Publication Number | Publication Date |
---|---|
SU550374A1 true SU550374A1 (en) | 1977-03-15 |
Family
ID=20632144
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
SU2173605A SU550374A1 (en) | 1975-09-11 | 1975-09-11 | The method of purification of tetrafluorodibromoethane |
Country Status (1)
Country | Link |
---|---|
SU (1) | SU550374A1 (en) |
-
1975
- 1975-09-11 SU SU2173605A patent/SU550374A1/en active
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