GB642036A - Improved process for burning lime - Google Patents
Improved process for burning limeInfo
- Publication number
- GB642036A GB642036A GB19664/47A GB1966447A GB642036A GB 642036 A GB642036 A GB 642036A GB 19664/47 A GB19664/47 A GB 19664/47A GB 1966447 A GB1966447 A GB 1966447A GB 642036 A GB642036 A GB 642036A
- Authority
- GB
- United Kingdom
- Prior art keywords
- pipe
- calcining section
- returned
- container
- calcined
- 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
Classifications
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B2/00—Lime, magnesia or dolomite
- C04B2/10—Preheating, burning calcining or cooling
- C04B2/106—Preheating, burning calcining or cooling in fluidised bed furnaces
Abstract
<PICT:0642036/III/1> Limestone is calcined whilst in the form of a dense fluidized bed. As shown, the material from crusher 1 and pulverizer 3 is fed to a container 5 wherein it is aerated by flue gas, air, &c. from pipe 9. The fluidized powder passes to the upper part of reactor 10 wherein it is dried by hot gases from the lower sections passing through grid G. The gases pass through cyclone separator 12 and waste heat boiler 14, fines being returned. After drying, the material flows over baffle 16 provided with valve 17 to calcining section 18, to the lower part of which air or oxygen and fuel oil or powdered coal is supplied via pipe 20 to produce a temperature of 900-1100 DEG C. More than one calcining section may be used. The calcined lime passes through cooler 23 to container 27, pipe 32 communicating with a bag filter. Fluidizing gases enter the system via pipes 19, 24, 25, 30, 31. In a modification, part of the calcined lime from the exit is returned to the calcining section via a heat exchanger.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US642036XA | 1943-01-01 | 1943-01-01 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB642036A true GB642036A (en) | 1950-08-23 |
Family
ID=22054259
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB19664/47A Expired GB642036A (en) | 1943-01-01 | 1947-07-22 | Improved process for burning lime |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB642036A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110055112A (en) * | 2018-04-12 | 2019-07-26 | 新能能源有限公司 | Fluidized bed whirlwind feeding back device and whirlwind feed back control method |
-
1947
- 1947-07-22 GB GB19664/47A patent/GB642036A/en not_active Expired
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110055112A (en) * | 2018-04-12 | 2019-07-26 | 新能能源有限公司 | Fluidized bed whirlwind feeding back device and whirlwind feed back control method |
| CN110055112B (en) * | 2018-04-12 | 2023-12-12 | 新能能源有限公司 | Cyclone return device of fluidized bed and cyclone return control method |
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