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公开(公告)号：DE69714596D1
公开(公告)日：2002-09-12
申请号：DE69714596
申请日：1997-03-05
Applicant: KAO CORP
Inventor： ONO REIJI , NAKAYA TAKASHI , KIMURA YOSHIO , KAMIJO TSUNAO , MIYAMOTO KENICHI , MATOBA TAKASHI , OHASHI HIDEMI , ICHIMOTO TAKEHIKO
Abstract: The use of pulverized coal as the fuel to be injected into a metallurgical or combustion furnace becomes possible enabled by improving the transportability thereof. Further, a pulverized coal is provided, which is inhibited from bridging or channelling in a hopper, or piping choking. A water-soluble inorganic salt having a polar group is made to adhere to pulverized coal which is prepared from raw coal having an average HGI of 30 or above and which is in a dry state at the injection port of a metallurgical or combustion furnace, the inorganic salt being selected from among BaCl2, CaCl2, Ca(NO2)2, Ca(NO3)2, Ca(ClO)2, K2CO3, KCl, MgCl2, MgSO4, NH4BF4, NH4Cl, (NH4 ) 2SO4, Na2CO3, NaCl, NaClO3, NaNO2, NaNO3, NaOH, Na2S2O3, NaS2O5, HNO3, H2SO4, H2CO3, and HCl.
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Patent Agency Ranking
公开(公告)号：DE69714596T2
公开(公告)日：2003-04-24
申请号：DE69714596
申请日：1997-03-05
Applicant: KAO CORP
Inventor： ONO REIJI , NAKAYA TAKASHI , KIMURA YOSHIO , KAMIJO TSUNAO , MIYAMOTO KENICHI , MATOBA TAKASHI , OHASHI HIDEMI , ICHIMOTO TAKEHIKO
Abstract: The use of pulverized coal as the fuel to be injected into a metallurgical or combustion furnace becomes possible enabled by improving the transportability thereof. Further, a pulverized coal is provided, which is inhibited from bridging or channelling in a hopper, or piping choking. A water-soluble inorganic salt having a polar group is made to adhere to pulverized coal which is prepared from raw coal having an average HGI of 30 or above and which is in a dry state at the injection port of a metallurgical or combustion furnace, the inorganic salt being selected from among BaCl2, CaCl2, Ca(NO2)2, Ca(NO3)2, Ca(ClO)2, K2CO3, KCl, MgCl2, MgSO4, NH4BF4, NH4Cl, (NH4 ) 2SO4, Na2CO3, NaCl, NaClO3, NaNO2, NaNO3, NaOH, Na2S2O3, NaS2O5, HNO3, H2SO4, H2CO3, and HCl.
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公开(公告)号：JPH09256015A
公开(公告)日：1997-09-30
申请号：JP6851396
申请日：1996-03-25
Applicant: KOBE STEEL LTD , KAO CORP
Inventor： ONO REIJI , NAKAYA TAKASHI , KIMURA YOSHIO , KAMIJO TSUNAO , MIYAMOTO KENICHI , MATOBA TAKASHI , OHASHI HIDEMI , ICHIMOTO TAKEHIKO
Abstract: PROBLEM TO BE SOLVED: To produce the pulverized fine coal by which the conveyability of fine coal is improved and which can be used as the blowing fuel for metallurgical furnace or combustion furnace and by which hanging and channeling in a hopper and clogging of piping can be prevented. SOLUTION: Inorganic salt having a polar group such as BaCl2 , CaCl2 , Ca(NO2 )2 , Ca(NO3 )2 , Ca(ClO)2 , K2 CO3 , KCl, MgCl2 , MgSO4 , NH4 BF4 , NH4 Cl, (NH4 )2 SO4 , Na2 CO3 , NaCl, NaClO3 , NaNO2 , NaNO3 , NaOH, Na2 S2 O3 , NaS2 O5 , HNO3 , H2 SO4 , H2 CO3 , HCl, etc., and solubility to water, is stuck to the pulverized fine coal in a dried state in the original coal having >=30 average HGI at a blowing hole of the metallurgical furnace or the combustion furnace.
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公开(公告)号：JPH09256013A
公开(公告)日：1997-09-30
申请号：JP6851196
申请日：1996-03-25
Applicant: KOBE STEEL LTD , KAO CORP
Inventor： ONO REIJI , NAKAYA TAKASHI , KIMURA YOSHIO , KAMIJO TSUNAO , MIYAMOTO KENICHI , MATOBA TAKASHI , OHASHI HIDEMI , ICHIMOTO TAKEHIKO
Abstract: PROBLEM TO BE SOLVED: To improve the conveyability of pulverized fine coal by sticking a specified chemical on the pulverized fine coal made of raw coal having >=30 average HGI. SOLUTION: This specified chemical is composed of a water soluble organic compound having a polar group and the purpose for using this chemical is to reduce triboelectric charge quantity of the pulverized fine coal. Consequently, mutual sticking is the pulverized fine coal is prevented. By this method, the conveyability of the pulverized fine coal having >=30 average HGI and usually poor in conveyability is improved and a large amount convey is attained. The usable range in the kind of coal is extended. Further, since the fluidity of the pulverized fine coal is improved, the hanging and channeling in a hopper and clogging of the piping can be prevented. In the opration of a metallurgical furnace or a combustion furnace, the improver is added desirable at 0.01-10wt.% per the pulverized fine coal, and the pulverized fine coal added with the improver is blown from a blowing hole of the furnace in the drying condition.
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公开(公告)号：JPH09256016A
公开(公告)日：1997-09-30
申请号：JP6851496
申请日：1996-03-25
Applicant: KOBE STEEL LTD , KAO CORP
Inventor： ONO REIJI , NAKAYA TAKASHI , KIMURA YOSHIO , KAMIJO TSUNAO , MIYAMOTO KENICHI , MATOBA TAKASHI , OHASHI HIDEMI , ICHIMOTO TAKEHIKO
Abstract: PROBLEM TO BE SOLVED: To improve the conveyability of pulverized fine coal made of raw coal having >=30 average HGI coal by sticking specified chemical. SOLUTION: This specified chemical is composed of a compound selected from one or more kinds of alcohol having
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公开(公告)号：JPH09256014A
公开(公告)日：1997-09-30
申请号：JP6851296
申请日：1996-03-25
Applicant: KOBE STEEL LTD , KAO CORP
Inventor： ONO REIJI , NAKAYA TAKASHI , KIMURA YOSHIO , KAMIJO TSUNAO , MIYAMOTO KENICHI , MATOBA TAKASHI , OHASHI HIDEMI , ICHIMOTO TAKEHIKO
Abstract: PROBLEM TO BE SOLVED: To improve the conveyability of pulverized fine coal by sticking a specified chemical on it and regulating a uniform sticking index. SOLUTION: At the time of conveying the pulverized fine coal, an organic compound having a polar group and soluble in water, or this compound and a uniform by sticking improver are stuck on the surface of the pulverized fine coal made of a raw coal having >=30 average HGI. The pulverized fine coal is treated in the dried condition of =30 average HGI and usally poor in conveyability alarge is improved amount convey is attained and the usable range in the kind of coal is extended. Further, since the fluidity of the pulverized coal is improved, the hanging and channeling in a hopper and clogging of the piping can be prevented.
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