JPS5688817A - Production of solidified carbon dioxide - Google Patents
Production of solidified carbon dioxideInfo
- Publication number
- JPS5688817A JPS5688817A JP16524979A JP16524979A JPS5688817A JP S5688817 A JPS5688817 A JP S5688817A JP 16524979 A JP16524979 A JP 16524979A JP 16524979 A JP16524979 A JP 16524979A JP S5688817 A JPS5688817 A JP S5688817A
- Authority
- JP
- Japan
- Prior art keywords
- carbon dioxide
- chamber
- cooled
- temperature
- nitrogen gas
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Classifications
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P20/00—Technologies relating to chemical industry
- Y02P20/141—Feedstock
Abstract
PURPOSE: Geseous carbon dioxide, which has been previously cooled to a temperature that is as low as possible in the range exceeding the solidifying temperature, is jetted into a chamber which is being kept to a prescribed temperature to produce solidified carbon dioxide with saving of the compression power for liquefaction and elimination of the adiabatic expansion by jetting.
CONSTITUTION: After a nitrogen gas was circulated to keep the inside of chamber 1 to a prescribed temperature ranging from -100 to -150°C previously, the feedstock of carbon dioxide, from which impurities such as water or sulfides have been removed, is fed to pipe 5 leading to jetting nozzle 3 for carbon dioxide where the carbon oxide is cooled to -70°C in the intermediate pipe 5 by a low-temperature nitrogen gas flowing in both of the outer and center pipes 4 and 6. The carbon dioxide that has been cooled to -70°C in the intermediate pipe 5 is jetted through slit 8 into the chamber 1 to expand to normal pressure. As a result, the temp. of the carbon dioxide drops to -72°C and is cooled to -150°C with the nitrogen gas that is fed from pipe 13 into the chamber 1 where it is cooled by gaseous N2, which is the atmosphere of said chamber, to -150°C under approximately atmospheric pressure to be converted instantly into snowlike dry ice.
COPYRIGHT: (C)1981,JPO&Japio
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP16524979A JPS5688817A (en) | 1979-12-19 | 1979-12-19 | Production of solidified carbon dioxide |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP16524979A JPS5688817A (en) | 1979-12-19 | 1979-12-19 | Production of solidified carbon dioxide |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS5688817A true JPS5688817A (en) | 1981-07-18 |
Family
ID=15808707
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP16524979A Pending JPS5688817A (en) | 1979-12-19 | 1979-12-19 | Production of solidified carbon dioxide |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5688817A (en) |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5461097A (en) * | 1977-10-24 | 1979-05-17 | Showa Tansan Kk | Method of manufacturing solidified carbon dioxide gas and liquefied carbon dioxide gas |
| JPS5466395A (en) * | 1977-11-07 | 1979-05-28 | Showa Tansan Kk | Manufacture of transparent and solid carbon dioxide gas |
-
1979
- 1979-12-19 JP JP16524979A patent/JPS5688817A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5461097A (en) * | 1977-10-24 | 1979-05-17 | Showa Tansan Kk | Method of manufacturing solidified carbon dioxide gas and liquefied carbon dioxide gas |
| JPS5466395A (en) * | 1977-11-07 | 1979-05-28 | Showa Tansan Kk | Manufacture of transparent and solid carbon dioxide gas |
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