Fluidized bed combustion apparatus
    1.
    发明授权
    Fluidized bed combustion apparatus 失效
    流化床燃烧器

    公开(公告)号:US4556017A

    公开(公告)日:1985-12-03

    申请号:US697125

    申请日:1985-01-31

    摘要: A fluidized bed furnace and boiler for the combustion of flyash with a moisture content of 45% by weight. The flyash is produced as a by-product of a coal gasification process and transported in water to a slime dam. From the slime dam a slurry of flyash and water is initially thickened in a gravity thickener (1) (FIG. 1) and then converted to filter cake in a tubular filter press (4). The filter cake is fed through pressurized hoppers (8) and chutes to the base of the boiler (10) and is distributed across the floor through chutes in the side walls and through chutes surrounded by a tubular array of water tubes and extending into the boiler furnace chamber terminating approximately one quarter of the furnace width from the side walls. A fluidized bed with a depth of about 3 meters is formed by discharging air heated in an associated air heater through nozzles in the floor of the furnace chamber to effect combustion. The combustion gases are utilized to produce steam in the boiler and are passed through a grits separator (32) and bag filter ( 34) before discharge through a flue (36).

    摘要翻译: PCT No.PCT / GB84 / 00190 Sec。 371日期1985年1月31日 102(e)1985年1月31日PCT PCT 1984年6月1日PCT公布。 出版物WO84 / 04954 日期1984年12月20日。一种流化床炉和锅炉,用于燃烧含水量为45重量%的粉煤灰。 粉煤灰作为煤气化过程的副产物生产,并在水中运输到泥坝。 从粘泥坝中,粉煤灰和水的浆料在重力增稠剂(1)(图1)中初始增稠,然后转化成管式压滤机(4)中的滤饼。 滤饼通过加压料斗(8)和滑槽进入锅炉(10)的底部,并通过侧壁中的滑槽穿过地板并通过由管状阵列的水管包围并延伸到锅炉中的滑槽 炉室从侧壁终止炉宽度的大约四分之一。 通过在相关联的空气加热器中加热的空气通过炉室底部的喷嘴排出空气来形成深度约3米的流化床,以进行燃烧。 燃烧气体用于在锅炉中产生蒸汽,并在通过烟道(36)排出之前通过砂粒分离器(32)和袋式过滤器(34)。