Pulverized coal carriability improver
    4.
    发明授权
    Pulverized coal carriability improver 失效
    粉煤炭改良剂

    公开(公告)号:US6083289A

    公开(公告)日:2000-07-04

    申请号:US155296

    申请日:1998-09-25

    CPC classification number: C21B5/003 F23K1/00 F23K3/00 F23K3/02 F23K2201/505

    Abstract: The use of pulverized coal as the fuel to be injected into metallurgical or combustion furnace becomes possible enabled by improving the transportability thereof. Further, a pulverized coal is provided, which is inhibiting from bridging or channeling 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 is selected from among BaCl.sub.2, CaCl.sub.2, Ca(NO.sub.2).sub.2, Ca(NO.sub.3).sub.2, Ca(ClO).sub.2, K.sub.2 CO.sub.3, KCl, MgCl.sub.2, MgSO.sub.4, NH.sub.4 BF.sub.4, NH.sub.4 Cl, (NH.sub.4).sub.2 SO.sub.4, Na.sub.2 CO.sub.3, NaCl, NaClO.sub.3, NaNO.sub.2, NaNO.sub.3, NaOH, Na.sub.2 S.sub.2 O.sub.3, Na.sub.2 S.sub.2 O.sub.5, HNO.sub.3, H.sub.2 SO.sub.4, H.sub.2 CO.sub.3, and HCl.

    Abstract translation: PCT No.PCT / JP97 / 00668 Sec。 371日期:1998年9月25日 102(e)1998年9月25日PCT 1997年3月5日PCT公布。 公开号WO97 / 36009 日期1997年10月2日使用粉煤作为喷入冶金炉或燃烧炉的燃料,可以通过提高其输送性而实现。 此外,提供了一种在料斗中阻止桥接或引导,或管道阻塞的粉煤。 将具有极性基团的水溶性无机盐与由平均HGI为30以上且在冶金或燃烧炉的注入口处于干燥状态的原煤制成的粉煤粘附。 无机盐选自BaCl2,CaCl2,Ca(NO2)2,Ca(NO3)2,Ca(ClO)2,K2CO3,KCl,MgCl2,MgSO4,NH4BF4,NH4Cl,(NH4)2SO4,Na2CO3,NaCl,NaClO3 ,NaNO 2,NaNO 3,NaOH,Na 2 S 2 O 3,Na 2 S 2 O 5,HNO 3,H 2 SO 4,H 2 CO 3和HCl。

Patent Agency Ranking