公开(公告)号：US09784445B2

公开(公告)日：2017-10-10

申请号：US14646457

申请日：2013-10-09

申请人： Dongfang Electric Corporation

发明人： Liyong Cao ,  Wei Fan ,  Qi Du ,  Pan Guo ,  Zhengning Liu ,  Jiang Liu ,  Yuan Zhang ,  Chunfei Zhang ,  Hongwei Hu ,  Yang Li ,  Xin Zhang

IPC分类号： F23C10/10 ,  F23C10/00 ,  F23C10/22 ,  F23C10/26 ,  F23J1/02 ,  F23J15/02 ,  F23C6/02

CPC分类号： F23C10/10 ,  F23C6/02 ,  F23C10/005 ,  F23C10/22 ,  F23C10/26 ,  F23C2900/10005 ,  F23J1/02 ,  F23J15/02

摘要： An external bed type double-fluidized bed system for preventing boiler contamination includes a fluidized bed combustion furnace, a cyclone separator, a coal ash distributor and a fluidized bed pyrolysis furnace. The fluidized bed combustion furnace is connected with the coal ash distributor, the coal ash distributor is connected with the coal ash inlet on a side wall of the fluidized bed combustion furnace through a return feeder with which the coal ash outlet of the fluidized bed pyrolysis furnace is also connected through an external bed, and the return feeder is connected with the fluidized bed combustion furnace. A fuel coal is pyrolyzed in the fluidized bed pyrolysis furnace at a temperature to volatize alkali chlorides into a pyrolysis gas, thereby reducing the content of the alkali chlorides contained in the coal in the fluidized bed combustion furnace and relieving the contamination to a convective heat-absorbing surface.

公开(公告)号：US20150292735A1

公开(公告)日：2015-10-15

申请号：US14646457

申请日：2013-10-09

申请人： DONGFANG ELECTRIC CORPORATION

发明人： Liyong Cao ,  Wei Fan ,  Qi Du ,  Pan Guo ,  Zhengning Liu ,  Jiang Liu ,  Yuan Zhang ,  Chunfei Zhang ,  Hongwei Hu ,  Yang Li ,  Xin Zhang

IPC分类号： F23C10/10 ,  F23J15/02 ,  F23J1/02 ,  F23C10/22 ,  F23C10/26

CPC分类号： F23C10/10 ,  F23C6/02 ,  F23C10/005 ,  F23C10/22 ,  F23C10/26 ,  F23C2900/10005 ,  F23J1/02 ,  F23J15/02

摘要： An external bed type double-fluidized bed system for preventing boiler contamination includes a fluidized bed combustion furnace, a cyclone separator, a coal ash distributor and a fluidized bed pyrolysis furnace. The fluidized bed combustion furnace is connected with the coal ash distributor, the coal ash distributor is connected with the coal ash inlet on a side wall of the fluidized bed combustion furnace through a return feeder with which the coal ash outlet of the fluidized bed pyrolysis furnace is also connected through an external bed, and the return feeder is connected with the fluidized bed combustion furnace. A fuel coal is pyrolyzed in the fluidized bed pyrolysis furnace at a temperature to volatize alkali chlorides into a pyrolysis gas, thereby reducing the content of the alkali chlorides contained in the coal in the fluidized bed combustion furnace and relieving the contamination to a convective heat-absorbing surface.

摘要翻译： 用于防止锅炉污染的外床式双流化床系统包括流化床燃烧炉，旋风分离器，煤灰分配器和流化床热解炉。 流化床燃烧炉与煤灰分配器连接，煤灰分配器通过回流供料器与流化床燃烧炉侧壁上的煤灰入口连接，流化床热解炉的煤灰出口 也通过外部床连接，返回进料器与流化床燃烧炉连接。 燃料煤在流化床热解炉中以使碱性氯化物挥发成热解气体的温度被热解，从而降低流化床燃烧炉中煤中所含的碱金属氯化物的含量，并将污染减轻到对流热解炉中， 吸收表面。