JPS55100907A - Control of pressure at top of blast furnace - Google Patents
Control of pressure at top of blast furnaceInfo
- Publication number
- JPS55100907A JPS55100907A JP647379A JP647379A JPS55100907A JP S55100907 A JPS55100907 A JP S55100907A JP 647379 A JP647379 A JP 647379A JP 647379 A JP647379 A JP 647379A JP S55100907 A JPS55100907 A JP S55100907A
- Authority
- JP
- Japan
- Prior art keywords
- valve
- furnace
- opening
- pressure
- blast furnace
- 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
Abstract
PURPOSE: To stabilize the condition of a blast furnace by carrying out antomatically the control of the pressure at the top of the furnace by a method wherein a turbine governor valve is operated when the opening of the control valve of a septum valve system for gas in the top of the furnace is detected in the high-pressure operation of the blast furnace and the opening becomes smaller than that previously set.
CONSTITUTION: When exhaust gas from a blast furnace is decreased and the pressure at the top of the furnace is reduced while the blast furnace 1 is operated, the control valve 53 of a septum valve system 5 is closed. The opening of the valve is detected by a detector 2 for the pressure at the top of the furnace. When the opening becomes below 30°, a close signal is output to a range valve 52 to fully close the valve 52. When the pressure at the top of the furnace is not restored to a predetermined level, the detected valve opening of the control valve 53 is compared with valve- opening previously set by a lower limit setting device 10. When the detected valve opening becomes smaller than the set valve opening, a close signal P is input to a turbine governor valve 8 to close the valve and restore the pressure at the top of the furnace, thereby the amount of the exhaust gas from the blast furnace passing through the septum valve system 5 is increased. When the valve opening of the control valve 53 is restored to a level above the set value, an open signal is input to the turbine governor valve 8.
COPYRIGHT: (C)1980,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP647379A JPS55100907A (en) | 1979-01-22 | 1979-01-22 | Control of pressure at top of blast furnace |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP647379A JPS55100907A (en) | 1979-01-22 | 1979-01-22 | Control of pressure at top of blast furnace |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS55100907A true JPS55100907A (en) | 1980-08-01 |
Family
ID=11639421
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP647379A Pending JPS55100907A (en) | 1979-01-22 | 1979-01-22 | Control of pressure at top of blast furnace |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS55100907A (en) |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
KR100461508B1 (en) * | 2000-06-24 | 2004-12-13 | 주식회사 포스코 | multi top gas pressure control method |
KR100544433B1 (en) * | 2001-05-23 | 2006-01-24 | 주식회사 포스코 | Apparatus for preventing pressure peak in a melting furnace |
JP2006283563A (en) * | 2005-03-31 | 2006-10-19 | Mitsui Eng & Shipbuild Co Ltd | Control system of furnace top pressure recovery turbine |
-
1979
- 1979-01-22 JP JP647379A patent/JPS55100907A/en active Pending
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
KR100461508B1 (en) * | 2000-06-24 | 2004-12-13 | 주식회사 포스코 | multi top gas pressure control method |
KR100544433B1 (en) * | 2001-05-23 | 2006-01-24 | 주식회사 포스코 | Apparatus for preventing pressure peak in a melting furnace |
JP2006283563A (en) * | 2005-03-31 | 2006-10-19 | Mitsui Eng & Shipbuild Co Ltd | Control system of furnace top pressure recovery turbine |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
JPS529719A (en) | Exhast gas recycling device | |
JPS54141924A (en) | Exhaust gas recycling device | |
JPS55100907A (en) | Control of pressure at top of blast furnace | |
JPS52125915A (en) | Furnace top pressure controlling method by blast furnace gas expansion turbine and its apparatus | |
JPS5681607A (en) | Controlling method of blast furnace top pressure | |
JPS5688920A (en) | Operating method of power-regenerating turbine | |
ES465212A1 (en) | Method and apparatus for recovering energy possessed by exhaust gas from blast furnace by turbine | |
JPS5514926A (en) | Water injection system for gas turbine | |
JPS5625914A (en) | Control method of top pressure of blast furnace | |
JPS55112810A (en) | Load controller for combined-cycle plant | |
JPS5625911A (en) | Controlling method of top pressure of blast furnace | |
JPS5688028A (en) | Blocking, checking controller in pulverized body transportation device | |
JPS6472466A (en) | Combustion air flow controller | |
JPS56148689A (en) | Control device for terrestrial heat system turbine | |
JPS557933A (en) | Steam turbin controller | |
JPS5493789A (en) | Flow quantity controlling method and its device | |
JPS5248705A (en) | Steam turbine overspeed preventing control method and its device | |
JPS571401A (en) | Control of recirculation flow rate in thermosiphon-type reboiler | |
JPS55110187A (en) | Method and apparatus for pressure control in gas collecting main of coke oven | |
JPS55114818A (en) | Changeover system of initial pressure control in combined-cycle plant | |
JPS5791341A (en) | Fuel supply equipment for engine | |
JPS56126605A (en) | Turbine controller | |
JPS56148624A (en) | Power collector for combustion waste gas of flow contact analyzer | |
JPS54103916A (en) | Controlling of blast furnace exhaust gas energy recovering plant | |
JPS56135782A (en) | Apparatus for controlling exhausting pressure and flowing quantity in screw compressor |