Heat recovery system and power generation system for wastes
    2.
    发明授权
    Heat recovery system and power generation system for wastes 失效
    废热回收系统和发电系统

    公开(公告)号:US6116169A

    公开(公告)日:2000-09-12

    申请号:US212255

    申请日:1998-12-16

    摘要: In an improved system for recovering heat from a combustion gas produced by burning wastes, the combustion gas or combustible gas produced by partial burning of the wastes subjected to dust filtration in a temperature range of 450-650.degree. C. at a filtration velocity of 1-5 cm/sec under a pressure of from -5 kPa (gage) to 5 MPa before heat recovery is effected. The dust filtration is preferably performed using a filter medium which may or may not support a denitration catalyst. Heat recovery is preferably effected using a steam superheater. The dust-free gas may partly or wholly be reburnt with or without an auxiliary fuel to a sufficiently high temperature to permit heat recovery. The combustion furnace may be a gasifying furnace which, in turn, may be combined with a melting furnace. If desired, the reburning to a higher temperature may be performed under pressure and the obtained hot combustion gas is supplied to a gas turbine to generate electricity, followed by introduction of the exhaust gas from the gas turbine into a steam superheater for further heat recovery. The system can raise the temperature of superheated steam to a sufficient level to enhance the efficiency of power generation without possibility of corrosion of heat transfer pipes by the combustion gas or combustible gas.

    摘要翻译: 在用于从燃烧废物产生的燃烧气体中回收热量的改进系统中,通过在过滤速度为1的450-650℃的温度范围内进行灰尘过滤的部分燃烧部分燃烧产生的燃烧气体或可燃气体 -5厘米/秒,压力为-5千帕(表压)至5MPa。 灰尘过滤优选使用可以或可以不支持脱硝催化剂的过滤介质进行。 热回收优选使用蒸汽过热器进行。 无尘气体可以部分或全部地被反燃,有或没有辅助燃料到足够高的温度以允许热回收。 燃烧炉可以是气化炉,其又可以与熔炉组合。 如果需要,可以在压力下进行再燃烧到更高的温度,并且将获得的热燃烧气体供应到燃气轮机以产生电力,然后将来自燃气轮机的废气引入蒸汽过热器中以进一步热回收。 该系统可以将过热蒸汽的温度升高到足够的水平,以提高发电效率,而不会由燃烧气体或可燃气体导致传热管的腐蚀。

    Apparatus for dewatering waste material by capillary action
    9.
    发明授权
    Apparatus for dewatering waste material by capillary action 失效
    用于通过毛细管理来排除废物的装置

    公开(公告)号:US5107757A

    公开(公告)日:1992-04-28

    申请号:US251648

    申请日:1988-06-03

    IPC分类号: B30B9/06 B30B9/20 B30B9/24

    CPC分类号: B30B9/24 B30B9/06 B30B9/20

    摘要: A method of and apparatus for dewatering a substance which is to be dewatered such as sludge wherein the substance to be dewatered is pressed between a pair of rollers (11, 212) or plate-shaped press members (331) each having its press surface formed from a rigid porous material (6, C, 331) having water absorption and retention properties based on the capillary action; water squeezed from the substance by pressing is permeated into the rigid porous material due to water absorption based on the capillary action or water pressure and the permeated water is retained by virtue of the water retention properties based on the capillary action, thereby dewatering the substance; and the water retained by the rigid porous material is discharged by sending pressurized air to regenerate the capillary tubes.

    摘要翻译: PCT No.PCT / JP86 / 00659 Sec。 371日期:1988年6月3日 102(e)日期1988年6月3日PCT Filted 1986年12月26日PCT公布。 出版物WO87 / 04114 日期:1987年7月16日。一种用于对要脱水的物质如污泥进行脱水的方法和设备,其中待脱水物质被压在一对辊(11,212)或板状压力构件 ),其各自具有由刚性多孔材料(6,C,331)形成的压力表面,所述刚性多孔材料具有基于毛细作用的吸水性和保留性; 由于基于毛细管作用或水压而吸收的水分,通过压制从物质挤压的水渗透到刚性多孔材料中,并且由于基于毛细管作用的保水性而保持渗透水,从而使物质脱水; 并且由刚性多孔材料保留的水通过发送加压空气而排出以再生毛细管。