JPS5451908A - Method of recovering exhaust gas - Google Patents
Method of recovering exhaust gasInfo
- Publication number
- JPS5451908A JPS5451908A JP11894677A JP11894677A JPS5451908A JP S5451908 A JPS5451908 A JP S5451908A JP 11894677 A JP11894677 A JP 11894677A JP 11894677 A JP11894677 A JP 11894677A JP S5451908 A JPS5451908 A JP S5451908A
- Authority
- JP
- Japan
- Prior art keywords
- period
- exhaust gas
- gas
- iib
- sucked
- 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.)
- Granted
Links
Classifications
-
- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21C—PROCESSING OF PIG-IRON, e.g. REFINING, MANUFACTURE OF WROUGHT-IRON OR STEEL; TREATMENT IN MOLTEN STATE OF FERROUS ALLOYS
- C21C5/00—Manufacture of carbon-steel, e.g. plain mild steel, medium carbon steel or cast steel or stainless steel
- C21C5/28—Manufacture of steel in the converter
- C21C5/38—Removal of waste gases or dust
- C21C5/40—Offtakes or separating apparatus for converter waste gases or dust
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Environmental & Geological Engineering (AREA)
- Manufacturing & Machinery (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
Abstract
PURPOSE:To safely recover exhaust gas, by completely removing O2 and CO in a duct by controlling the combustion rate of a converter port by the forecasting of the quantity of gas in the furnace at a time of starting, etc. of the operation of the converter and by burning exhaust gas at a theoretical air ratio for a while. CONSTITUTION:When starting the operation of a converter, the sucked flow rate of exhaust gas is controlled as shown in a C7 line to the generated flow rate C6 of exhaust gas of the converter. A period Ib is a period of excess air ratio combustion, a period IIb a period of complete combustion, and a period IIIb a partial combustion, a period that can recover exhaust gas. Since it is preferable that there exists no Ib period but perfect removal is difficult, excess air is sucked to an extent that can avoid the generation of surging. The complete combustion of the period IIb is due as soon as the generation of gas in the furnace rises. Since the concn. of O2 gas in a duct approximately reduces to O during the IIb period, the IIb period is made to be approx. 30 sec., sucked gas quantity is instantaneously decreased, the sucked quantity of air is diminished, CO concn. in exhaust gas is increased, and the CO gas recovery period of IIIb is due. Since there exists no O2 in the duct, CO does not explode, and exhaust gas can safely be recovered.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP11894677A JPS5451908A (en) | 1977-10-03 | 1977-10-03 | Method of recovering exhaust gas |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP11894677A JPS5451908A (en) | 1977-10-03 | 1977-10-03 | Method of recovering exhaust gas |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS5451908A true JPS5451908A (en) | 1979-04-24 |
| JPS5622927B2 JPS5622927B2 (en) | 1981-05-28 |
Family
ID=14749152
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP11894677A Granted JPS5451908A (en) | 1977-10-03 | 1977-10-03 | Method of recovering exhaust gas |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5451908A (en) |
-
1977
- 1977-10-03 JP JP11894677A patent/JPS5451908A/en active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| JPS5622927B2 (en) | 1981-05-28 |
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