US1817318A - of munich - Google Patents
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- Publication number
- US1817318A US1817318A US1817318DA US1817318A US 1817318 A US1817318 A US 1817318A US 1817318D A US1817318D A US 1817318DA US 1817318 A US1817318 A US 1817318A
- Authority
- US
- United States
- Prior art keywords
- chromium
- acetic acid
- vapor
- iron
- heating
- 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 - Lifetime
Links
- QTBSBXVTEAMEQO-UHFFFAOYSA-N acetic acid Chemical compound CC(O)=O QTBSBXVTEAMEQO-UHFFFAOYSA-N 0.000 description 70
- WFDIJRYMOXRFFG-UHFFFAOYSA-N acetic anhydride Chemical compound CC(=O)OC(C)=O WFDIJRYMOXRFFG-UHFFFAOYSA-N 0.000 description 28
- 238000000034 method Methods 0.000 description 18
- 238000010438 heat treatment Methods 0.000 description 14
- VYZAMTAEIAYCRO-UHFFFAOYSA-N chromium Chemical compound [Cr] VYZAMTAEIAYCRO-UHFFFAOYSA-N 0.000 description 12
- 229910052804 chromium Inorganic materials 0.000 description 12
- 239000011651 chromium Substances 0.000 description 12
- XEEYBQQBJWHFJM-UHFFFAOYSA-N iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 12
- PXHVJJICTQNCMI-UHFFFAOYSA-N nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 description 12
- 229910000599 Cr alloy Inorganic materials 0.000 description 10
- 239000003054 catalyst Substances 0.000 description 10
- 229910000640 Fe alloy Inorganic materials 0.000 description 8
- 238000002360 preparation method Methods 0.000 description 8
- 239000010953 base metal Substances 0.000 description 6
- 229910052742 iron Inorganic materials 0.000 description 6
- 229910052759 nickel Inorganic materials 0.000 description 6
- 239000002253 acid Substances 0.000 description 4
- OKTJSMMVPCPJKN-UHFFFAOYSA-N carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 4
- 229910052799 carbon Inorganic materials 0.000 description 4
- 238000000354 decomposition reaction Methods 0.000 description 4
- 238000004519 manufacturing process Methods 0.000 description 4
- 239000000463 material Substances 0.000 description 4
- 229910000851 Alloy steel Inorganic materials 0.000 description 2
- ILRRQNADMUWWFW-UHFFFAOYSA-K Aluminium phosphate Chemical compound O1[Al]2OP1(=O)O2 ILRRQNADMUWWFW-UHFFFAOYSA-K 0.000 description 2
- 229910000990 Ni alloy Inorganic materials 0.000 description 2
- 125000000218 acetic acid group Chemical group C(C)(=O)* 0.000 description 2
- 229910045601 alloy Inorganic materials 0.000 description 2
- 239000000956 alloy Substances 0.000 description 2
- 230000015572 biosynthetic process Effects 0.000 description 2
- 239000006227 byproduct Substances 0.000 description 2
- CURLTUGMZLYLDI-UHFFFAOYSA-N carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 description 2
- 239000001569 carbon dioxide Substances 0.000 description 2
- 229910002092 carbon dioxide Inorganic materials 0.000 description 2
- 150000001768 cations Chemical class 0.000 description 2
- -1 chromium-iron Chemical compound 0.000 description 2
- 238000005755 formation reaction Methods 0.000 description 2
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 2
- 210000000056 organs Anatomy 0.000 description 2
- 239000000047 product Substances 0.000 description 2
- 229910052710 silicon Inorganic materials 0.000 description 2
- 239000010703 silicon Substances 0.000 description 2
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
Classifications
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
- C07C51/00—Preparation of carboxylic acids or their salts, halides or anhydrides
- C07C51/54—Preparation of carboxylic acid anhydrides
- C07C51/56—Preparation of carboxylic acid anhydrides from organic acids, their salts, their esters or their halides, e.g. by carboxylation
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
- C07C53/00—Saturated compounds having only one carboxyl group bound to an acyclic carbon atom or hydrogen
- C07C53/12—Acetic anhydride
Definitions
- the present invention relates to the appli cation of our discovery, that a number of base metals which, according to the statements in the literature cited above are said to have a strongly decomposing action on acetic acid vapor, are applicable as materials for the heating apparatus in' the, process in question.
- Emample 1501000 g. acetic acid vapor per hour are 50 water and the unchanged acetic acid.
- Example II The procedure is the same as in Example I, but the V2A-tube is filled with the aluminum phosphate catalyst described in U. S. Patent No. 1,570,514, Example VI. In this case. the condensed product contains 40-45 per cent acetic anhydride. The decomposition in by-products is again very unimportant.
- Example I I l Process for preparation of acetic anhydride comprising heating acetic, acid FFlc-E Vapor to 400-800 C. on heat conducting surfaces composed of an alloy of chromium which does not decompose acetic acid at that temperature.
- Process for the preparation of acetic anhydride comprising heating acetic acid vapor in the presence of dehydrating catalysts to 400800 C. on heat conducting surfaces composed of an alloy of chromium and iron containing 10 to 30% chromium.
- Process for the preparation of acetic anhydride comprising heating acetic acid vapor in the presence of a dehydrating catalyst to 400-800" C. on heat conducting surfaces composed of an alloy of chromium, iron and nickel, containing 1025% chromium and 4F1O% nickel! RUDOLF MEINGAST. MARTIN MUGDAN.
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Engineering & Computer Science (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
Description
Patented Aug. 4, 1931 UNITED STATES T N S] RUDOLF MEINGAST AND MARTIN MUGDAN, OF MUNICH, GERMANY, ASSIGNORS TO CONSORTIUM FUER ELEKTROCHEMISGHE INDUSTRIE, OF MUNICH, GERMANY PROCESS OF MANUFACTURING ACETIC ANHYDRIDE No Drawing. Application filed June 2, 1927, Serial No. 196,136, and in Germany June 16, 1926.
In carrying out the process of manufacturing acetic anhydride by heating acetic acid vapor to high temperatures, described for example in; U. S. Patent No. 1,570,514 it is important for the heat transmitting surfaces of the heating chamber to be constructed of such material which has not only no undesired decomposing effect on the vapor of acetic acid, but has also a high thermal conductivity. As
acetic acid vapor at temperatures of between 240 and 410 0., inclining especially to the formation of methane and carbon dioxide (Sabatier La Catalyse 2nd edition 1920, p. 328; Gmelin-Kraut, Handbuch der organ, Chemie, IV, Aufiage, Bd. X. S. 624). For this reason the U. S. Patent No. 1,570,514 for carrying out the process as far as it is performed without the use of catalysts prescribes c the absence of base metals.
The present invention relates to the appli cation of our discovery, that a number of base metals which, according to the statements in the literature cited above are said to have a strongly decomposing action on acetic acid vapor, are applicable as materials for the heating apparatus in' the, process in question. This is the case particularly with the acid resisting chromium-iron alloys such as duraloy of the Duraloy 00., Pittsburgh, containing about 30% chromium, trace of silicon and carbon, and iron by difference, and the alloys V2A, containing chromium, 7% nickel, carbon, iron by diflerence, VM and nichrotherm, similar steel alloys having from 10-25% chromium and from 410% nickel, iron by difference, made by Friedrich Krupp in Essen, Germany.
Emample 1501000 g. acetic acid vapor per hour are 50 water and the unchanged acetic acid. The
is known, the ordinary base metals decompose decomposition of the acetic acid in other directions is only very slight.
Eat-ample II The procedure is the same as in Example I, but the V2A-tube is filled with the aluminum phosphate catalyst described in U. S. Patent No. 1,570,514, Example VI. In this case. the condensed product contains 40-45 per cent acetic anhydride. The decomposition in by-products is again very unimportant. Ewample I I l 1. Process for preparation of acetic anhydride comprising heating acetic, acid FFlc-E Vapor to 400-800 C. on heat conducting surfaces composed of an alloy of chromium which does not decompose acetic acid at that temperature.
vapor in the presence of dehydrating catalysts to 400-800 C. on heat conducting surfaces composed of an alloy of chromium which does not decompose acetic acid at that temperature.
. 3. Process for the preparation of acetic anhydride comprising heating acetic acid vapor to 400800 G. on heat conducting surfaces composed of an alloy of chromium and iron containing 10 to 30% chromium.
4. Process for the preparation of acetic anhydride comprising heating acetic acid vapor in the presence of dehydrating catalysts to 400800 C. on heat conducting surfaces composed of an alloy of chromium and iron containing 10 to 30% chromium.
5. Process for the preparation of acetic anhydride comprising heating acetic acid vapor in the presence of a dehydrating catalyst to 400-800" C. on heat conducting surfaces composed of an alloy of chromium, iron and nickel, containing 1025% chromium and 4F1O% nickel! RUDOLF MEINGAST. MARTIN MUGDAN.
Publications (1)
| Publication Number | Publication Date |
|---|---|
| US1817318A true US1817318A (en) | 1931-08-04 |
Family
ID=3422521
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| US1817318D Expired - Lifetime US1817318A (en) | of munich |
Country Status (1)
| Country | Link |
|---|---|
| US (1) | US1817318A (en) |
-
0
- US US1817318D patent/US1817318A/en not_active Expired - Lifetime
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