JPS5577631A - Method and device for controlling air fuel ratio at combustion furnace - Google Patents
Method and device for controlling air fuel ratio at combustion furnaceInfo
- Publication number
- JPS5577631A JPS5577631A JP15129878A JP15129878A JPS5577631A JP S5577631 A JPS5577631 A JP S5577631A JP 15129878 A JP15129878 A JP 15129878A JP 15129878 A JP15129878 A JP 15129878A JP S5577631 A JPS5577631 A JP S5577631A
- Authority
- JP
- Japan
- Prior art keywords
- gas
- converter
- converter gas
- mixed gas
- meter
- 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.)
- Pending
Links
- 238000002485 combustion reaction Methods 0.000 title abstract 3
- 239000000446 fuel Substances 0.000 title abstract 3
- 238000000034 method Methods 0.000 title 1
- 239000007789 gas Substances 0.000 abstract 14
- 239000002737 fuel gas Substances 0.000 abstract 1
Landscapes
- Regulation And Control Of Combustion (AREA)
Abstract
PURPOSE:To burn mixed gas in a fixed air fuel ratio even when the calorific value of converter gas changes. CONSTITUTION:A mixing ratio of converter gas is obtained from a ratio of CO concentration in the converter gas detected by means of a converter gas CO meter 50 to CO concentration in mixed gas detected by means of a mixed gas CO meter 52, the theoretical quantity of air of the mixed gas is gained from the mixing ratio and the output of the mixed gas CO meter 52, and the quantity is used as the input of a multiplier 34, thus feeding the quantity forward to a combustion furnace control system. The density of the converter gas acquired from the output of the converter gas CO meter 50, the density of other fuel gas beforehand afforded, and the density of the mixed gas from the mixing ratio of the converter gas are computed by means of a computing element 60, and also fed forward toa function generator 28. Thus, the air fuel ratio of a combustion furnace 18 can positively be controlled regardless of the variation of the calorific power of the converter gas.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP15129878A JPS5577631A (en) | 1978-12-04 | 1978-12-04 | Method and device for controlling air fuel ratio at combustion furnace |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP15129878A JPS5577631A (en) | 1978-12-04 | 1978-12-04 | Method and device for controlling air fuel ratio at combustion furnace |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS5577631A true JPS5577631A (en) | 1980-06-11 |
Family
ID=15515619
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP15129878A Pending JPS5577631A (en) | 1978-12-04 | 1978-12-04 | Method and device for controlling air fuel ratio at combustion furnace |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5577631A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2012220138A (en) * | 2011-04-12 | 2012-11-12 | Nippon Steel Corp | Method and device for controlling air-fuel ratio of heating furnace, and program |
-
1978
- 1978-12-04 JP JP15129878A patent/JPS5577631A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2012220138A (en) * | 2011-04-12 | 2012-11-12 | Nippon Steel Corp | Method and device for controlling air-fuel ratio of heating furnace, and program |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| A601 | Written request for extension of time |
Free format text: JAPANESE INTERMEDIATE CODE: A601 Effective date: 20040407 |
|
| A602 | Written permission of extension of time |
Free format text: JAPANESE INTERMEDIATE CODE: A602 Effective date: 20040531 |
|
| A521 | Written amendment |
Free format text: JAPANESE INTERMEDIATE CODE: A523 Effective date: 20040713 |
|
| A01 | Written decision to grant a patent or to grant a registration (utility model) |
Effective date: 20050104 Free format text: JAPANESE INTERMEDIATE CODE: A01 |
|
| A045 | Written measure of dismissal of application |
Effective date: 20050524 Free format text: JAPANESE INTERMEDIATE CODE: A045 |