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发明公开
CN1856352A 用于在流化床中混合、干燥和涂覆粉状、颗粒或成型疏松材料的设备 无效 - 驳回

用于在流化床中混合、干燥和涂覆粉状、颗粒或成型疏松材料的设备
摘要：
本发明涉及一种用于在流化床中混合、干燥和涂覆粉状、颗粒或成型疏松材料的设备，特别是用于生产气相氧化用担载催化剂的工艺中的设备，其包括：用于容纳所述疏松材料的容器(10)，其中在容器(10)的下部区域(13)中提供碗状凹部(17)；用于供入气体的中心管(27)，其中所述中心管在容器(10)的上部区域(12)进入所述容器、在容器(10)中基本上沿着轴向向下延伸并通向凹部(17)；基本上呈环形的偏转屏(29)，其被固定制处于容器(10)的上部区域(12)的中心管(27)；导环(31)，其位于容器(10)的下部区域(13)中并以距离L基本同心地环绕中心管(27)的部分长度，从而使得在所述凹部的上边缘(22)处的容器(10)壁与所述导环(31)的下端(33)之间形成第一孔口(34)以及在所述偏转屏(29)与所述导环(31)的上边缘(35)之间形成第二孔口(36)；和用于将流体供入容器(10)的装置(21)，例如阀门(21)。所述设备的特征在于为中心管(27)的外壁至少部分地提供非粘性涂层(38)。在一个优选实施方案中，中心管(27)的壁与导环(31)的壁之间的距离L大于第一孔口(34)的开放高度H3。本发明还涉及一种使用这种设备生产担载催化剂的方法。
摘要（英）：

The invention relates to a device for the mixing, drying and coating of powdered, granular or moulded bulk material in a fluid bed, in particular, a method for the production of supported catalysts for gas phase oxidations, with a container (10), for holding the bulk goods, whereby a dished recess (17) is provided in a lower region (13) of the container (10), a central tube (27) for the introduction of a gas, whereby the central tube enters in an upper region (12) of the container (10), extending essentially axially downwards into the container (10) and opens out in the recess (17), an essentially annular deflector screen (29), fixed to the central tube (27) in the upper region (12) of the container (10), a guide ring (31), arranged in the lower region (13) of the container (10), which surrounds the central tube (27) over a part of the length thereof essentially concentrically with a separation (L) such that a first passage (34) is formed between the wall of the container (10) at the upper edge of the recess and the lower end (33) of the guide ring (31) and a second outlet (36) is formed between the deflector screen (29) and the upper edge (35) of the guide ring (31) and means for introduction of a fluid into the container (10), such as, for example, nozzles (21). Said device is characterised in that the external wall of the central tube (27) is at least partly provided with a non-stick coating (38). In a preferred embodiment the separation (L) between the wall of the central tube (27) and the wall of the guide ring (27) is greater than the open height (H3) of the first passage (34). The invention further relates to a method for the production of supported catalysts using such a device.

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