DE2208393A1 - - Google Patents
Info
- Publication number
- DE2208393A1 DE2208393A1 DE19722208393 DE2208393A DE2208393A1 DE 2208393 A1 DE2208393 A1 DE 2208393A1 DE 19722208393 DE19722208393 DE 19722208393 DE 2208393 A DE2208393 A DE 2208393A DE 2208393 A1 DE2208393 A1 DE 2208393A1
- Authority
- DE
- Germany
- 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
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21C—MANUFACTURE OF METAL SHEETS, WIRE, RODS, TUBES, PROFILES OR LIKE SEMI-MANUFACTURED PRODUCTS OTHERWISE THAN BY ROLLING; AUXILIARY OPERATIONS USED IN CONNECTION WITH METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL
- B21C37/00—Manufacture of metal sheets, rods, wire, tubes, profiles or like semi-manufactured products, not otherwise provided for; Manufacture of tubes of special shape
- B21C37/06—Manufacture of metal sheets, rods, wire, tubes, profiles or like semi-manufactured products, not otherwise provided for; Manufacture of tubes of special shape of tubes or metal hoses; Combined procedures for making tubes, e.g. for making multi-wall tubes
- B21C37/08—Making tubes with welded or soldered seams
- B21C37/083—Supply, or operations combined with supply, of strip material
-
- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01B—NON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
- C01B17/00—Sulfur; Compounds thereof
- C01B17/69—Sulfur trioxide; Sulfuric acid
- C01B17/74—Preparation
- C01B17/76—Preparation by contact processes
- C01B17/765—Multi-stage SO3-conversion
- C01B17/7655—Multi-stage SO3-conversion with intermediate absorption
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Inorganic Chemistry (AREA)
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Treating Waste Gases (AREA)
Priority Applications (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE19722208393 DE2208393B1 (de) | 1972-02-23 | 1972-02-23 | Verfahren zur herstellung von schwefelsaeure |
ZA731271A ZA731271B (en) | 1972-02-23 | 1973-02-22 | Method of producing sulphuric acid method of producing sulphuric acid |
ZM22/73A ZM2273A1 (en) | 1972-02-23 | 1973-02-23 | Process for production of sulphuric acid |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE19722208393 DE2208393B1 (de) | 1972-02-23 | 1972-02-23 | Verfahren zur herstellung von schwefelsaeure |
Publications (2)
Publication Number | Publication Date |
---|---|
DE2208393A1 true DE2208393A1 (enrdf_load_stackoverflow) | 1973-05-10 |
DE2208393B1 DE2208393B1 (de) | 1973-05-10 |
Family
ID=5836753
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DE19722208393 Pending DE2208393B1 (de) | 1972-02-23 | 1972-02-23 | Verfahren zur herstellung von schwefelsaeure |
Country Status (3)
Country | Link |
---|---|
DE (1) | DE2208393B1 (enrdf_load_stackoverflow) |
ZA (1) | ZA731271B (enrdf_load_stackoverflow) |
ZM (1) | ZM2273A1 (enrdf_load_stackoverflow) |
-
1972
- 1972-02-23 DE DE19722208393 patent/DE2208393B1/de active Pending
-
1973
- 1973-02-22 ZA ZA731271A patent/ZA731271B/xx unknown
- 1973-02-23 ZM ZM22/73A patent/ZM2273A1/xx unknown
Also Published As
Publication number | Publication date |
---|---|
DE2208393B1 (de) | 1973-05-10 |
ZM2273A1 (en) | 1973-10-22 |
ZA731271B (en) | 1973-11-28 |
Similar Documents
Legal Events
Date | Code | Title | Description |
---|---|---|---|
B1 | Publication of the examined application without previous publication of unexamined application |