JPS5765591A - Method for opening and closing valves for hot air furnace for melting furnace - Google Patents

Method for opening and closing valves for hot air furnace for melting furnace

Info

Publication number
JPS5765591A
JPS5765591A JP55140016A JP14001680A JPS5765591A JP S5765591 A JPS5765591 A JP S5765591A JP 55140016 A JP55140016 A JP 55140016A JP 14001680 A JP14001680 A JP 14001680A JP S5765591 A JPS5765591 A JP S5765591A
Authority
JP
Japan
Prior art keywords
valve
closed
air
furnace
gas
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
Application number
JP55140016A
Other languages
Japanese (ja)
Inventor
Haruki Uchiyama
Shiyunji Kuwazuka
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Nippon Steel Corp
Original Assignee
Nippon Steel Corp
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Nippon Steel Corp filed Critical Nippon Steel Corp
Priority to JP55140016A priority Critical patent/JPS5765591A/en
Publication of JPS5765591A publication Critical patent/JPS5765591A/en
Pending legal-status Critical Current

Links

Classifications

    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E20/00—Combustion technologies with mitigation potential
    • Y02E20/34—Indirect CO2mitigation, i.e. by acting on non CO2directly related matters of the process, e.g. pre-heating or heat recovery

Landscapes

  • Air Supply (AREA)

Abstract

PURPOSE: To prevent some dusts containing compound of low melting point from being adhered to a seat surface of the hot gas valve by a method wherein a hot gas valve for a hot air furnace for refuse or dust melting furnace is opened or closed under such a condition as having scarce existence of gas flow.
CONSTITUTION: Hot air furnace 7 for a melting furnace 1 is provided with a hot air gas valve 15, a waste gas chimney valve 16, a cold air transporting valve 17 and a pre-heated hot air valve 18. Heating of air and air blowing are changed over under a specified order or sequence so as to close or shut off the gas or air. In case that the operation is changed from the air blowing to the air heating, at first the valve 17 is closed, then the valve 18 is kept under its closed condition, the valve 16 is released for a little while to remove air therefrom, the valve 15 is gradually opened while the valve 16 is kept closed, and the valve 16 is gradually opened while the valve 15 is fully opened. When the valve 15 is closed, the valve 16 is gradually closed and the valve 15 is gradually closed while the valve 16 is fully closed. In case that the heating is changed over to air blowing operation, the valve 16 is fully closed, thereafter the valves 17 and 18 are gradually opened. Under this above- mentioned operation, the valve 15 shows scarce pressure difference between the upstream and downstream thereof.
COPYRIGHT: (C)1982,JPO&Japio
JP55140016A 1980-10-07 1980-10-07 Method for opening and closing valves for hot air furnace for melting furnace Pending JPS5765591A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP55140016A JPS5765591A (en) 1980-10-07 1980-10-07 Method for opening and closing valves for hot air furnace for melting furnace

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP55140016A JPS5765591A (en) 1980-10-07 1980-10-07 Method for opening and closing valves for hot air furnace for melting furnace

Publications (1)

Publication Number Publication Date
JPS5765591A true JPS5765591A (en) 1982-04-21

Family

ID=15258969

Family Applications (1)

Application Number Title Priority Date Filing Date
JP55140016A Pending JPS5765591A (en) 1980-10-07 1980-10-07 Method for opening and closing valves for hot air furnace for melting furnace

Country Status (1)

Country Link
JP (1) JPS5765591A (en)

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