JPS57209128A - Storage method of coal - Google Patents

Storage method of coal

Info

Publication number
JPS57209128A
JPS57209128A JP9115381A JP9115381A JPS57209128A JP S57209128 A JPS57209128 A JP S57209128A JP 9115381 A JP9115381 A JP 9115381A JP 9115381 A JP9115381 A JP 9115381A JP S57209128 A JPS57209128 A JP S57209128A
Authority
JP
Japan
Prior art keywords
coal
gas
tank
nitrogen
oxygen
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
JP9115381A
Other languages
Japanese (ja)
Inventor
Minoru Sugita
Takao Miyamoto
Kinrou Ogasawara
Tsuneo Kobayashi
Kiyomatsu Udagawa
Seiichi Daibo
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.)
Shimizu Construction Co Ltd
Japan Oxygen Co Ltd
Nippon Sanso Corp
Original Assignee
Shimizu Construction Co Ltd
Japan Oxygen Co Ltd
Nippon Sanso 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 Shimizu Construction Co Ltd, Japan Oxygen Co Ltd, Nippon Sanso Corp filed Critical Shimizu Construction Co Ltd
Priority to JP9115381A priority Critical patent/JPS57209128A/en
Publication of JPS57209128A publication Critical patent/JPS57209128A/en
Pending legal-status Critical Current

Links

Classifications

    • A—HUMAN NECESSITIES
    • A62—LIFE-SAVING; FIRE-FIGHTING
    • A62C—FIRE-FIGHTING
    • A62C99/00—Subject matter not provided for in other groups of this subclass
    • A62C99/0009—Methods of extinguishing or preventing the spread of fire by cooling down or suffocating the flames
    • A62C99/0018—Methods of extinguishing or preventing the spread of fire by cooling down or suffocating the flames using gases or vapours that do not support combustion, e.g. steam, carbon dioxide

Abstract

PURPOSE:To prevent dust explosion, by previously purging the interior of a coal storage tank with nitrogen, and then both throwing coal into the tank and detecting concentration and pressure of oxygen in ambient gas, then controlling a supply quantity of nitrogen gas on the basis of the detected pressure. CONSTITUTION:Before coal is stored in a coal storage tank 1, nitrogen gas is supplied from a nitrogen gas injection port 14 to perform nitrogen purge internally of the tank 1. In this way, for concentration of oxygen if not higher than a prescribed value, for instance, 10%, a discharge port 3 is closed and a filling port 2 is opened to throw coal into the tank. When internal pressure exceeds a prescribed level by filling of the coal, a vent valve 5 is operated to release gas. Further in a case with the internal pressure abnormally high or low, a supervisory device 13 generates an alarm. While the atmospheric gas is always picked from a sampling port 14 to perform gas analysis, if concentration of oxygen at least a prescribed level is recorded, an alarm is generated from the supervisory device 13, and a feed amount of nitrogen gas is increased.
JP9115381A 1981-06-13 1981-06-13 Storage method of coal Pending JPS57209128A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP9115381A JPS57209128A (en) 1981-06-13 1981-06-13 Storage method of coal

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP9115381A JPS57209128A (en) 1981-06-13 1981-06-13 Storage method of coal

Publications (1)

Publication Number Publication Date
JPS57209128A true JPS57209128A (en) 1982-12-22

Family

ID=14018563

Family Applications (1)

Application Number Title Priority Date Filing Date
JP9115381A Pending JPS57209128A (en) 1981-06-13 1981-06-13 Storage method of coal

Country Status (1)

Country Link
JP (1) JPS57209128A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1995008675A1 (en) * 1993-09-21 1995-03-30 Paramode Limited Improved pile driver

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS4836512A (en) * 1971-09-14 1973-05-30
JPS5340969A (en) * 1976-09-24 1978-04-13 Nippei Sangyo Kk Granularrmaterial extracting method
JPS5717784A (en) * 1980-06-24 1982-01-29 Tsuneyuki Iwata Method of preventing spontaneous ignition and dust explosion of coal in coal bin

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS4836512A (en) * 1971-09-14 1973-05-30
JPS5340969A (en) * 1976-09-24 1978-04-13 Nippei Sangyo Kk Granularrmaterial extracting method
JPS5717784A (en) * 1980-06-24 1982-01-29 Tsuneyuki Iwata Method of preventing spontaneous ignition and dust explosion of coal in coal bin

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1995008675A1 (en) * 1993-09-21 1995-03-30 Paramode Limited Improved pile driver

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