GB413709A - Improvements in or relating to process of and apparatus for making ketene - Google Patents
Improvements in or relating to process of and apparatus for making keteneInfo
- Publication number
- GB413709A GB413709A GB1970/33A GB197033A GB413709A GB 413709 A GB413709 A GB 413709A GB 1970/33 A GB1970/33 A GB 1970/33A GB 197033 A GB197033 A GB 197033A GB 413709 A GB413709 A GB 413709A
- Authority
- GB
- United Kingdom
- Prior art keywords
- iron
- vapour
- acetone
- cracking
- reaction chamber
- 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.)
- Expired
Links
- CCGKOQOJPYTBIH-UHFFFAOYSA-N ethenone Chemical compound C=C=O CCGKOQOJPYTBIH-UHFFFAOYSA-N 0.000 title abstract 3
- CSCPPACGZOOCGX-UHFFFAOYSA-N Acetone Chemical compound CC(C)=O CSCPPACGZOOCGX-UHFFFAOYSA-N 0.000 abstract 12
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 abstract 8
- 229910000599 Cr alloy Inorganic materials 0.000 abstract 6
- 238000006243 chemical reaction Methods 0.000 abstract 6
- 239000000788 chromium alloy Substances 0.000 abstract 6
- UPHIPHFJVNKLMR-UHFFFAOYSA-N chromium iron Chemical compound [Cr].[Fe] UPHIPHFJVNKLMR-UHFFFAOYSA-N 0.000 abstract 6
- 239000000463 material Substances 0.000 abstract 6
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 abstract 4
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 abstract 4
- 229910052802 copper Inorganic materials 0.000 abstract 4
- 239000010949 copper Substances 0.000 abstract 4
- 229910052742 iron Inorganic materials 0.000 abstract 4
- 229910000831 Steel Inorganic materials 0.000 abstract 2
- 238000005336 cracking Methods 0.000 abstract 2
- 238000004519 manufacturing process Methods 0.000 abstract 2
- 230000008018 melting Effects 0.000 abstract 2
- 238000002844 melting Methods 0.000 abstract 2
- 229910052751 metal Inorganic materials 0.000 abstract 2
- 239000002184 metal Substances 0.000 abstract 2
- 150000002739 metals Chemical class 0.000 abstract 2
- 229910052759 nickel Inorganic materials 0.000 abstract 2
- 230000003647 oxidation Effects 0.000 abstract 2
- 238000007254 oxidation reaction Methods 0.000 abstract 2
- 239000010959 steel Substances 0.000 abstract 2
- 239000000126 substance Substances 0.000 abstract 2
- 230000008016 vaporization Effects 0.000 abstract 2
Classifications
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
- C07C45/00—Preparation of compounds having >C = O groups bound only to carbon or hydrogen atoms; Preparation of chelates of such compounds
- C07C45/87—Preparation of ketenes or dimeric ketenes
- C07C45/88—Preparation of ketenes or dimeric ketenes from ketones
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Physical Or Chemical Processes And Apparatus (AREA)
- Manufacture And Refinement Of Metals (AREA)
Abstract
In the production of ketene, a substance capable of yielding it, such as acetone, is passed through a metallic preheating chamber made of a material resistant to heat and oxidation, such as iron-chromium alloys, and then through a metallic reaction chamber made of a material free from iron, nickel, and related metals and having a melting point above about 800 DEG C. The reaction chamber may be of copper. Acetone is supplied from a tank 9 by way of a pump 11 and pipe 10 to a vaporizing section 12 which may be of steel or iron in which the acetone is vaporized and reaches a temperature not exceeding about 300 DEG C. at a point 14. The vapour then passes into a part 15 which may be of iron-chromium alloy in which it attains about 500 DEG C., and may reach 575 DEG C. at the point 16; the vapour then passes to the cracking-tube or reaction chamber 17 which is <PICT:0413709/III/1> preferably of copper, and may be protected by a shell 18 of more resistant material such as iron-chromium alloy. The temperature of the vapours at the outlet of the cracking tube may be 650 DEG C., the pressure may be about 5 lb. per square inch, and the time of exposure of the vapour to the cracking temperature may be 0,25 to 0,75 seconds as described in Specification 377,574.ALSO:<PICT:0413709/IV/1> In the production of ketene, a substance capable of yielding it, such as acetone, is passed through a metallic preheating chamber made of a material resistant to heat and oxidation, such as iron-chromium alloys, and then through a metallic reaction chamber made of a material free from iron, nickel, and related metals and having a melting point above about 800 DEG C. The reaction chamber may be of copper. Acetone is supplied from a tank 9 by way of a pump 11 and pipe 10 to a vaporizing section 12 which may be of steel or iron in which the acetone is vaporized and reaches a temperature not exceeding about 300 DEG C. at a point 14. The vapour then passes into a part 15 which may be of iron-chromium alloy in which it attains about 500 DEG C., and may reach 575 DEG C. at the point 16; the vapour then passes to the cracking-tube or reaction chamber 17 which is preferably of copper, and may be protected by a shell 18 of more resistant material such as iron-chromium alloy. The temperature of the vapours at the outlet of the cracking-tube may be 650 DEG C., the pressure may be about 5 lb. per square inch, and the time of exposure of the vapour to the cracking-temperature may be 0,25 to 0,75 seconds as described in Specification 377,574.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US591151A US1975663A (en) | 1932-02-05 | 1932-02-05 | Process and apparatus for making ketene |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB413709A true GB413709A (en) | 1934-07-20 |
Family
ID=24365266
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB1970/33A Expired GB413709A (en) | 1932-02-05 | 1933-01-20 | Improvements in or relating to process of and apparatus for making ketene |
Country Status (4)
| Country | Link |
|---|---|
| US (1) | US1975663A (en) |
| BE (1) | BE393839A (en) |
| FR (1) | FR749245A (en) |
| GB (1) | GB413709A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE1101403B (en) * | 1958-08-01 | 1961-03-09 | Hoffmann La Roche | Process for the production of ketene |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2467993A (en) * | 1943-11-10 | 1949-04-19 | Cabot Godfrey L Inc | Manufacture of formaldehyde and apparatus therefor |
| US2521207A (en) * | 1945-10-23 | 1950-09-05 | Shawinigan Chem Ltd | Gaseous reaction furnace and controller |
| US2541471A (en) * | 1947-07-11 | 1951-02-13 | Eastman Kodak Co | Furnace for pyrolyzing ketenizable organic compounds |
| US5475144A (en) * | 1994-06-08 | 1995-12-12 | The University Of Delaware | Catalyst and process for synthesis of ketenes from carboxylic acids |
-
0
- BE BE393839D patent/BE393839A/xx unknown
-
1932
- 1932-02-05 US US591151A patent/US1975663A/en not_active Expired - Lifetime
-
1933
- 1933-01-19 FR FR749245D patent/FR749245A/en not_active Expired
- 1933-01-20 GB GB1970/33A patent/GB413709A/en not_active Expired
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE1101403B (en) * | 1958-08-01 | 1961-03-09 | Hoffmann La Roche | Process for the production of ketene |
Also Published As
| Publication number | Publication date |
|---|---|
| FR749245A (en) | 1933-07-20 |
| BE393839A (en) | |
| US1975663A (en) | 1934-10-02 |
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