公开(公告)号：EP2563735A1

公开(公告)日：2013-03-06

申请号：EP11714838.7

申请日：2011-03-17

Applicant: FLSmidth A/S

Inventor： STROMBERG, Karl

IPC: C04B7/36 ,  C04B7/60 ,  F27B7/20 ,  F27D17/00

CPC classification number: F27B7/2025 ,  C04B7/364 ,  C04B7/60 ,  F27D17/008

Abstract: Described is a plant for manufacturing cement, which plant comprises a preheater (1) for preheating cement raw materials suspended in gases, a bottom cyclone (11) for separating the preheated cement raw materials and the gases, said cyclone (11) having a central outlet duct (6) for separated gases, a kiln (5) for burning the calcined cement raw material into cement clinker, as well as a bypass duct (14) for removing volatile components, such as chloride, alkali and sulphur, from the cement manufacturing plant, which bypass duct (14) is located after the bottom cyclone (11) viewed in the direction of movement of the gases. The plant is peculiar in that the bypass duct (14) extends into the central area of the central outlet duct (6). It is hereby obtained, that the exhaust gases extracted through the bypass duct (14) contain a significant smaller amount of dust and also that the entrained dust constitutes the finest fraction of the dust leaving the bottom cyclone (11) with the exhaust gases. This is due to the fact that the dust concentration at the point of extraction via the bypass due to the swirling action of the exhaust gases is lowest in the central area of the central outlet duct.

公开(公告)号：WO2011135468A1

公开(公告)日：2011-11-03

申请号：PCT/IB2011/051115

申请日：2011-03-17

Applicant: FLSMIDTH A/S ,  STROMBERG, Karl

Inventor： STROMBERG, Karl

IPC: C04B7/36 ,  C04B7/60 ,  F27B7/20 ,  F27D17/00

CPC classification number: F27B7/2025 ,  C04B7/364 ,  C04B7/60 ,  F27D17/008

Abstract: Described is a plant for manufacturing cement, which plant comprises a preheater (1) for preheating cement raw materials suspended in gases, a bottom cyclone (11) for separating the preheated cement raw materials and the gases, said cyclone (11) having a central outlet duct (6) for separated gases, a kiln (5) for burning the calcined cement raw material into cement clinker, as well as a bypass duct (14) for removing volatile components, such as chloride, alkali and sulphur, from the cement manufacturing plant, which bypass duct (14) is located after the bottom cyclone (11) viewed in the direction of movement of the gases. The plant is peculiar in that the bypass duct (14) extends into the central area of the central outlet duct (6). It is hereby obtained, that the exhaust gases extracted through the bypass duct (14) contain a significant smaller amount of dust and also that the entrained dust constitutes the finest fraction of the dust leaving the bottom cyclone (11) with the exhaust gases. This is due to the fact that the dust concentration at the point of extraction via the bypass due to the swirling action of the exhaust gases is lowest in the central area of the central outlet duct.

Abstract translation: 描述了一种用于制造水泥的设备，该工厂包括用于预热悬浮在气体中的水泥原料的预热器（1），用于分离预热的水泥原料和气体的底部旋风分离器（11），所述旋风分离器（11）具有中心 用于分离气体的出口管道（6），用于将煅烧的水泥原料燃烧成水泥熟料的窑（5）以及用于从水泥中除去挥发性组分如氯化物，碱和硫的旁通管道（14） 制造工厂，其旁通管道（14）位于从气体运动方向观察底部旋风分离器（11）之后。 该设备是特殊的，因为旁路管道（14）延伸到中央出口管道（6）的中心区域。 因此，通过旁通管道（14）提取的废气含有显着较少量的灰尘，并且夹带的灰尘构成离开底部旋风分离器（11）与废气的最细分数的灰尘。 这是由于在中央出口管道的中心区域由于排气的旋转作用而在旁路提取点处的灰尘浓度最低的事实。