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    • 3. 发明申请
    • EXHAUST GAS TREATING METHOD AND APPARATUS
    • 排气处理方法和装置
    • US20100071348A1
    • 2010-03-25
    • US12516845
    • 2007-12-24
    • Kazuki KobayashiHirofumi KikkawaHiroshi IshizakaHiroshi TakezakiHiroyuki Nosaka
    • Kazuki KobayashiHirofumi KikkawaHiroshi IshizakaHiroshi TakezakiHiroyuki Nosaka
    • F01N11/00B01D53/56F01N5/02F01N9/00
    • F23J15/003B01D53/10B01D53/50B01D53/64B01D53/8625B01D2257/602F23J15/006F23J15/025F23J2215/60F23J2217/10F23J2219/40F23J2219/60F23J2219/70F23J2900/15081
    • After adjusting an exhaust gas temperature at an exit of a heat recovery unit (11) of an exhaust gas treating apparatus to not more than a dew point temperature of sulfur trioxide (SO3), a heavy metal adsorbent is supplied from a heavy metal adsorbent supply unit (16) disposed in an exhaust gas at an entrance of a precipitator (4) or an intermediate position within the precipitator (4), and the exhaust gas containing the heavy metal adsorbent is supplied into the precipitator (4). Preferably at this stage, the heavy metal adsorbent is supplied into the exhaust gas at the entrance of the precipitator (4) 0.1 seconds after the exhaust gas temperature at the exit of the heat recovery unit (11) has been adjusted to not more than the dew point temperature of SO3. Further preferably, in order to prevent acid corrosion of equipment, the heavy metal adsorbent is supplied after spraying an alkali into the exhaust gas at the entrance or exit of the heat recovery unit (11) and adjusting the exhaust gas temperature at the exit of the heat recovery unit to not more than the dew point temperature of SO3. Accordingly, even when coal with a high sulfur content is used as fuel, heavy metals in the exhaust gas can be removed effectively.
    • 在废气处理装置的热回收单元(11)的出口处的排气温度调节至三氧化硫(SO3)的露点温度以下之前,重金属吸附剂由重金属吸附剂供给源 设置在除尘器(4)的入口处的排气中或者除尘器(4)内的中间位置的单元(16),并且将含有重金属吸附剂的排气供给到除尘器(4)中。 优选在此阶段,在热回收单元(11)的出口处的排气温度已经调整到不超过该温度的0.1秒之后,将重金属吸附剂供入到除尘器(4)入口处的废气中 露点温度SO3。 进一步优选为了防止设备的酸腐蚀,在热回收单元(11)的入口或出口处的排气中喷入碱后,再供给重金属吸附剂,并调节出口处的排气温度 热回收单位不得超过SO3的露点温度。 因此,即使使用具有高硫含量的煤作为燃料,也能够有效地除去废气中的重金属。
    • 4. 发明授权
    • Exhaust gas treating method and apparatus
    • 废气处理方法及装置
    • US08302388B2
    • 2012-11-06
    • US12516845
    • 2007-12-24
    • Kazuki KobayashiHirofumi KikkawaHiroshi IshizakaHiroshi TakezakiHiroyuki Nosaka
    • Kazuki KobayashiHirofumi KikkawaHiroshi IshizakaHiroshi TakezakiHiroyuki Nosaka
    • F01N3/00
    • F23J15/003B01D53/10B01D53/50B01D53/64B01D53/8625B01D2257/602F23J15/006F23J15/025F23J2215/60F23J2217/10F23J2219/40F23J2219/60F23J2219/70F23J2900/15081
    • After adjusting an exhaust gas temperature at an exit of a heat recovery unit (11) of an exhaust gas treating apparatus to not more than a dew point temperature of sulfur trioxide (SO3), a heavy metal adsorbent is supplied from a heavy metal adsorbent supply unit (16) disposed in an exhaust gas at an entrance of a precipitator (4) or an intermediate position within the precipitator (4), and the exhaust gas containing the heavy metal adsorbent is supplied into the precipitator (4). Preferably at this stage, the heavy metal adsorbent is supplied into the exhaust gas at the entrance of the precipitator (4) 0.1 seconds after the exhaust gas temperature at the exit of the heat recovery unit (11) has been adjusted to not more than the dew point temperature of SO3. Further preferably, in order to prevent acid corrosion of equipment, the heavy metal adsorbent is supplied after spraying an alkali into the exhaust gas at the entrance or exit of the heat recovery unit (11) and adjusting the exhaust gas temperature at the exit of the heat recovery unit to not more than the dew point temperature of SO3. Accordingly, even when coal with a high sulfur content is used as fuel, heavy metals in the exhaust gas can be removed effectively.
    • 在废气处理装置的热回收单元(11)的出口处的排气温度调节至三氧化硫(SO3)的露点温度以下之前,重金属吸附剂由重金属吸附剂供给源 设置在除尘器(4)的入口处的排气中或者除尘器(4)内的中间位置的单元(16),并且将含有重金属吸附剂的排气供给到除尘器(4)中。 优选在此阶段,在热回收单元(11)的出口处的排气温度已经调整到不超过该温度的0.1秒之后,将重金属吸附剂供入到除尘器(4)入口处的废气中 露点温度SO3。 进一步优选为了防止设备的酸腐蚀,在热回收单元(11)的入口或出口处的排气中喷入碱后,再供给重金属吸附剂,并调节出口处的排气温度 热回收单位不得超过SO3的露点温度。 因此,即使使用具有高硫含量的煤作为燃料,也能够有效地除去废气中的重金属。
    • 10. 发明申请
    • CONTROL ROD
    • 控制杆
    • US20120148012A1
    • 2012-06-14
    • US12019103
    • 2008-01-24
    • Takayuki ARAKAWAKoichi MachidaNorio KawashimaKazuki KobayashiYoshiharu Kikuchi
    • Takayuki ARAKAWAKoichi MachidaNorio KawashimaKazuki KobayashiYoshiharu Kikuchi
    • G21C7/06
    • G21C7/113G21C7/10Y02E30/39
    • A control rod includes a tie-rod, a handle mounted to an upper end portion of the tie-rod, either a connector plate or a fall velocity limiter mounted to a lower end portion of the tie-rod, sheaths having a U-shaped cross-section, welded intermittently to the tie-rod at a plurality of locations in the axial direction of the tie-rod, and having an upper end welded to the handle and a lower end welded to either the connector plate or the fall velocity limiter, and a neutron absorbing member disposed inside each of the sheaths. An upper end of a weld portion located at uppermost position in an axial direction of the tie-rod among a plurality of weld portions between the tie-rod and the sheath is disposed at a position within a range between 0.8 and 13% of total axial length Ls of the sheath below an upper end of the sheath.
    • 控制杆包括拉杆,安装到拉杆的上端部分的手柄,安装到拉杆的下端部分的连接板或下落速度限制器,具有U形的护套 横截面,在连杆的轴向方向上的多个位置处间断地焊接到拉杆,并且具有焊接到手柄的上端,以及焊接到连接器板或下落速度限制器的下端 以及设置在每个护套内的中子吸收构件。 位于拉杆和护套之间的多个焊接部分中的位于拉杆的轴向方向上的最上位置处的焊接部分的上端设置在总轴向的0.8和13%之间的范围内的位置 在鞘的上端下方的鞘的长度Ls。