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1. 发明授权

US5791778A Method and apparatus for mixing gaseous chemical to fiber suspension 失效
标题翻译：将气态化学品与纤维悬浮液混合的方法和设备
公开(公告)号：US5791778A
公开(公告)日：1998-08-11
申请号：US767524
申请日：1996-12-16
申请人： Matti Manninen , Kari Peltonen , Reijo Vesala
发明人： Matti Manninen , Kari Peltonen , Reijo Vesala
IPC分类号： D21C9/153 , B01F3/04 , B01F7/00 , B01F7/04 , D21C9/10 , B01F5/04
CPC分类号： D21C9/153 , B01F3/0446 , B01F7/0075 , B01F7/048 , D21C9/10 , B01F2003/04886 , B01F2003/0495
摘要： A method and apparatus allow large volumes of gas (at least about 10% by volume) to be mixed into a cellulosic fiber suspension having a consistency of about 8-25%. The mixing of ozone containing gas into the suspension is particularly desirable. The suspension is passed into the inlet of a mixer, gas is introduced into the mixer, and the gas and fiber suspension are homogenized by fluidizing the gas and suspension. The flow of suspension through the mixer is throttled so that the effect of the fluctuation and pressure between the inlet and outlet is minimized, and the homogeneously mixed gas and fiber suspension mixture is discharged from mixer outlet. The mixer may have a premixing zone in which the gas and suspension are fluidized to the floc level and the gas is evenly distributed throughout the suspension, then a homogenization zone in which the fiber suspension is fluidized to fiber or microfloc level and the gas is brought into contact with each fiber or microfloc, and then a maintenance zone in which the fluidization level is maintained high enough to prevent the generation of gas bubbles and the separation of gas from the suspension.
摘要翻译：一种方法和装置允许将大体积的气体（至少约10体积％）混合到具有约8-25％的稠度的纤维素纤维悬浮液中。将含臭氧气体混入悬浮液是特别理想的。将悬浮液送入混合器的入口，将气体引入混合器中，并通过使气体和悬浮液流化使气体和纤维悬浮液均化。通过混合器的悬浮液的流动被节流，使得入口和出口之间的波动和压力的影响最小化，并且均匀混合的气体和纤维悬浮液混合物从混合器出口排出。混合器可以具有预混合区域，其中气体和悬浮液被流化到絮状物水平并且气体均匀分布在整个悬浮液中，然后是均匀化区域，其中纤维悬浮液被流化为纤维或微环境水平并且气体被带入与每个纤维或微团接触，然后是维持区，其中流化水平保持足够高以防止产生气泡和气体与悬浮液分离。

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