公开(公告)号：US06228336B1

公开(公告)日：2001-05-08

申请号：US09373579

申请日：1999-08-13

申请人： Yasuo Katsuki ,  Takashi Ohnishi ,  Shozo Kaneko ,  Akira Hashimoto ,  Yuichi Fujioka ,  Kikuo Tokunaga ,  Toshihiko Setoguchi

发明人： Yasuo Katsuki ,  Takashi Ohnishi ,  Shozo Kaneko ,  Akira Hashimoto ,  Yuichi Fujioka ,  Kikuo Tokunaga ,  Toshihiko Setoguchi

IPC分类号： B01J800

CPC分类号： B01D50/002 ,  B01D53/508

摘要： A dust collecting apparatus and method for dedusting a Ca-containing gas using a ceramics filter is provided, in which a filter differential pressure elevation rate is suppressed. A desulferizing agent 103 and a mineral 106 containing MgO are supplied via a hopper 13, 15 a valve 14 and a feeder 16 into a pressurized fluidized-bed combustion furnace 1 together with coal 101 and air 102. A combustion gas 201 is dedusted by a cyclone 2 to become a combustion gas 301, the combustion gas 301 enters a filter container 3a, 3b having a ceramics filter 31a, 31b and is further dedusted. A combustion gas 401 which is dedusted is supplied into a gas turbine 4 to generate power, and combustion gas 501 heats a waste heat recovery boiler 5 which in turn drives a steam turbine 7. The mineral 106 containing MgO is added in the combustion gas 301 which flows in the ceramics filter 31a, 31b. Thereby MgO is added to the combustion gas so that the filter differential pressure elevation rate can be suppressed. The more MgO that is supplied, the greater the effect becomes, and an operation stop due to the differential pressure elevation is eliminated.

摘要翻译： 提供一种使用陶瓷过滤器除尘含Ca气体的集尘装置和方法，其中抑制了过滤器差压升高速率。 脱硫剂103和含有MgO的矿物106通过料斗13,15，阀14和进料器16与煤101和空气102一起供应到加压流化床燃烧炉1中。燃烧气体201通过 旋风分离器2成为燃烧气体301，燃烧气体301进入具有陶瓷过滤器31a，31b的过滤容器3a，3b，并进一步除尘。 将除尘的燃烧气体401供给燃气轮机4发电，燃烧气体501加热余热回收锅炉5，废热回收锅炉5又驱动蒸汽轮机7.含有MgO的矿物106加入燃烧气体301 其在陶瓷过滤器31a，31b中流动。 由此，将MgO添加到燃烧气体中，从而可以抑制过滤器差压提升率。 供给的MgO越多，效果越大，并且消除由于差压升高引起的操作停止。