仪器仪表

这个系统和粉末转移系统（PTS, Powder Transfer System）结合在一起可以安全地将鼓形圆桶清空并转移粉末，而不会进入容器造成直接的污染。鼓形圆桶密封系统包括一个透明的圆柱形的手套式操作箱，箱子的两侧有两个开口可以放入手套。一个带有平板密封的不锈钢法兰盘固定在手套式操作箱的下部，以确保同鼓形圆桶的连接是完全密封的。法兰盘上焊有一个作为内部垫片的配件。从手套式操作箱的顶部引入一个带有波纹管密封的可移动的抽气喷嘴。整个系统和一个气动升降系统连接在一起；气动升降系统可以使手套式操作箱在鼓形圆桶的上方升高或者降低。
The containment of products has always been an issue in the pharmaceutical industry. However, because of the continuous increase in the toxicity and reactivity of the products as well as due to the high standards of production quality required in the last decade, containment has become a must.

Containment is necessary as much for the protection of personnel as for the products themselves to prevent contamination.

It is still common practice to protect operators by wearing full safety suits with gas masks or external breathing air. Industries try to move away from such practices as the safety of the operator is not fully guaranteed and work under these conditions is rather difficult and unpleasant. Furthermore, the protection of the product and the environment is still not assured, so that a fully enclosed special production area with complex ventilation and filtration systems is required.

Isolator systems are a possible answer to these inconveniences. The use of glove box isolators is nowadays a common trend. They can protect the operator, the products and the environment all at the same time. However, they usually show low flexibility as they are designed for a given operation and require much space as well as a substantial investment.

Powdery material is still commonly delivered and stored in drums. Discharging a drum with a liner in a contained manner is not a simple operation. The powder is in most cases not free-flowing and the weight of the drums usually exceeds 50 kg, making them difficult to handle. The use of an isolator is not necessarily the best answer to this problem, especially when the powder has to be charged into some equipment with limited surrounding space (e.g. a reactor, dryer, etc).

Dec has developed a DCS - Drum Containment System to be used in combination with their PTS - Powder Transfer System to discharge drums in a fully contained manner and to transfer the powder directly into a process equipment without contamination, keeping the system safe even in the presence of a solvent atmosphere.