SU493236A1 - The method of cleaning gases produced freon - Google Patents
The method of cleaning gases produced freonInfo
- Publication number
- SU493236A1 SU493236A1 SU1813859A SU1813859A SU493236A1 SU 493236 A1 SU493236 A1 SU 493236A1 SU 1813859 A SU1813859 A SU 1813859A SU 1813859 A SU1813859 A SU 1813859A SU 493236 A1 SU493236 A1 SU 493236A1
- Authority
- SU
- USSR - Soviet Union
- Prior art keywords
- freon
- gases produced
- cleaning gases
- carbon tetrachloride
- exhaust gases
- Prior art date
Links
Landscapes
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
- Treating Waste Gases (AREA)
Description
1one
Фреоны наход т применение в качестве хладагентов, компонентов аэрозольных упаковок и т. д.Freons are used as refrigerants, components for aerosol packages, etc.
Фреоны И и 12 получают путем гидрофторировани четыреххлористого углерода фтористым водородом в присутствии п тихлористой сурьмы. Целевые продукты - фреоны 11 и 12 выдел ют низкотемпературной конденсацией, при этом получают также несконденсировавшиес абгазы, представл ющие собой главным образом смесь кислорода и азота и примесь фреона 12. Эти абгазы вывод т из системы конденсации за счет снижени давлени в системе и затем выбрасывают в атмосферу.Freons I and 12 are produced by hydrofluorinating carbon tetrachloride with hydrogen fluoride in the presence of antimony pentachloride. The target products, freons 11 and 12, are isolated by low-temperature condensation, and non-condensed exhaust gases are also obtained, which are mainly a mixture of oxygen and nitrogen and an impurity of freon 12. These exhaust gases are removed from the condensation system by reducing pressure the atmosphere.
Это приводит к потере целевого продукта- фреона 12.This leads to the loss of the desired product, freon 12.
С целью усовершенствовани технологического процесса исходные абгазы обрабатывают четыреххлористым углеродом при температуре от -20 до +30°С.In order to improve the process, the original exhaust gases are treated with carbon tetrachloride at a temperature of from -20 to + 30 ° C.
Предпочтительно процесс ведут при 20°С. Растворимость фреонов 11 и 12 в четыреххлористом углероде характеризуетс следующей таблицей.Preferably the process is carried out at 20 ° C. The solubility of freon 11 and 12 in carbon tetrachloride is characterized by the following table.
Максимальный унос абгазами фреона 12 не превышает 2-3 вес. %.The maximum carryover by the gases of freon 12 does not exceed 2-3 weight. %
Пропускание абгазов, содержащих фреоны, через четыреххлористый углерод позвол ет извлечь из последних до 98% содержащихс в них фреонов. Фреоны отдел ют от четырехРастворимость (вес. %) в зависимости от температурыPassing freon-containing gases through carbon tetrachloride makes it possible to extract up to 98% of the freons contained in them. Freons are separated from four solubility (wt.%) Depending on temperature.
ФреонFreon
лористого углерода ректификацией и используют по назначению.loric carbon by distillation and used for its intended purpose.
Пример. 1,232 л газовой фазы, содержащей , об. %: Ог 9,4; NZ 4:1,4 и CFsCls 49,2 барботируют через 60 см (93,8 г) четыреххлористого углерода при 20°С со скоростью 0,05 л/мин.Example. 1.232 liters of gas phase containing, about. %: Og 9.4; NZ 4: 1.4 and CFsCls 49.2 bubbled through 60 cm (93.8 g) of carbon tetrachloride at 20 ° C at a rate of 0.05 L / min.
Получают 96,7 г3%-ного раствора фреона 12 в четыреххлористом углероде. Объем абгазов уменьщилс до 0,65 л.96.7 g of a 3% solution of freon 12 in carbon tetrachloride are obtained. The volume of gases decreased to 0.65 liters.
Состав абгазов, об. %: Оа 17,6, N2 77,8 и CFsCla 4,6. Степень поглощени фреона 12-95%.Composition of exhaust gases, about. %: Oa 17.6, N2 77.8 and CFsCla 4.6. The degree of absorption of freon 12-95%.
Предмет изобретени Subject invention
1. Способ очистки абгазов производства1. The method of cleaning exhaust gases production
фреонов, отличающийс тем, что, с цельюfreon, characterized in that, for the purpose of
усоверщенствовани технологического процесса , исходные абгазы обрабатывают четырех3 хлористым углеродом при температуре от-20 до +30°С. 4 2. Способ по п. 1, отличающийс тем, что процесс ведут преимущественно при 20°С.the improvement of the technological process, the initial exhaust gases are treated with carbon dioxide chetyreh3 at a temperature of from -20 to + 30 ° C. 4 2. The method of Claim 1, wherein the process is conducted predominantly at 20 ° C.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| SU1813859A SU493236A1 (en) | 1972-07-21 | 1972-07-21 | The method of cleaning gases produced freon |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| SU1813859A SU493236A1 (en) | 1972-07-21 | 1972-07-21 | The method of cleaning gases produced freon |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| SU493236A1 true SU493236A1 (en) | 1975-11-28 |
Family
ID=20522878
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| SU1813859A SU493236A1 (en) | 1972-07-21 | 1972-07-21 | The method of cleaning gases produced freon |
Country Status (1)
| Country | Link |
|---|---|
| SU (1) | SU493236A1 (en) |
-
1972
- 1972-07-21 SU SU1813859A patent/SU493236A1/en active
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