JPS5638410A - Switching control of air-heating furnace - Google Patents
Switching control of air-heating furnaceInfo
- Publication number
- JPS5638410A JPS5638410A JP11167879A JP11167879A JPS5638410A JP S5638410 A JPS5638410 A JP S5638410A JP 11167879 A JP11167879 A JP 11167879A JP 11167879 A JP11167879 A JP 11167879A JP S5638410 A JPS5638410 A JP S5638410A
- Authority
- JP
- Japan
- Prior art keywords
- air
- heating furnaces
- heating
- sent
- sending
- 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
Landscapes
- Regulation And Control Of Combustion (AREA)
Abstract
PURPOSE: To eliminate defect incurred by blowing a cold air-mixed hot air into a blast furnace only by one air-heating furnace at the time of switching by a method in which air is always blown by two air-heating furnaces when hot air is sent into a blast furnace by four air-heating furnaces and also the blowing of constant-temperature air by two air-heating furnaces is made possible even at the time of switching.
CONSTITUTION: In case where four air-heating furnaces 2AW2D are used for the blast furnace 1, the opening degrees of the butterfly valves 5AW5D provided on the midway of the air-sending pipes 4AW4D branched from the main air-sending pipe are measured, and by using the opening degrees of the valves as factors, the air-heating furnaces are switched; that is, the amount of accumulated heat of the air-heating furnaces is estimated by using one or two or more values of the opening degrees of the butterfly valves 4AW4D, the flow rates of air in the blanched pipes of each air-heating furnace by the flow meters 6AW6D, and the temperatures of hot air at the outlets of air-heating furnaces, or values calculated from these values and air-sending and combustion periods in order to control the temperature of air being sent by the combustion-ending switch signal of the air-heating furnace to send air subsequently and also the air-sending finish control signal of the air-heating furnace which sent air previously. Thereby, the amount of cold air to be mixed at the time of switching can be almost eliminated, while lessening the lowering of heat efficiency of the air-heating furnaces, the loss of heat quantities, and the variation in the temperature of hot air being sent.
COPYRIGHT: (C)1981,JPO&Japio
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP11167879A JPS5638410A (en) | 1979-09-03 | 1979-09-03 | Switching control of air-heating furnace |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP11167879A JPS5638410A (en) | 1979-09-03 | 1979-09-03 | Switching control of air-heating furnace |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS5638410A true JPS5638410A (en) | 1981-04-13 |
Family
ID=14567401
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP11167879A Pending JPS5638410A (en) | 1979-09-03 | 1979-09-03 | Switching control of air-heating furnace |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5638410A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2011219804A (en) * | 2010-04-07 | 2011-11-04 | Nippon Steel Corp | Hot blast stove control and computing device, method for controlling hot blast stove, and computer program |
| KR101193751B1 (en) | 2011-03-30 | 2012-10-22 | 현대제철 주식회사 | Method for keeping heat of hot stove |
| JP2015117389A (en) * | 2013-12-16 | 2015-06-25 | 新日鐵住金株式会社 | Hot stove control calculation device, hot stove operation index derivation method, and computer program |
| CN114610093A (en) * | 2022-03-09 | 2022-06-10 | 科大智能物联技术股份有限公司 | Burning furnace air supply control method based on variable period prediction of hot blast stove |
-
1979
- 1979-09-03 JP JP11167879A patent/JPS5638410A/en active Pending
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2011219804A (en) * | 2010-04-07 | 2011-11-04 | Nippon Steel Corp | Hot blast stove control and computing device, method for controlling hot blast stove, and computer program |
| KR101193751B1 (en) | 2011-03-30 | 2012-10-22 | 현대제철 주식회사 | Method for keeping heat of hot stove |
| JP2015117389A (en) * | 2013-12-16 | 2015-06-25 | 新日鐵住金株式会社 | Hot stove control calculation device, hot stove operation index derivation method, and computer program |
| CN114610093A (en) * | 2022-03-09 | 2022-06-10 | 科大智能物联技术股份有限公司 | Burning furnace air supply control method based on variable period prediction of hot blast stove |
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