Yes, it is indeed possible for the technology is well understood. The best results are obtained with bypass systems in which a part of the conveying gas bypasses immoveable plugs in the conveying line. The bypassed gas is reintroduced so as to continuously break off the leading edge of the plug. The plug length is thereby reduced until conveying can again resume.

Dennis Hauch ■

hello,

How about pulse phase conveying as developed by Warren Spring laboratory in UK long back? Can this system be used ?

But it may be noted that this powder is highly cohesive in nature and is prone to static electric charging! ■

The Dense Phase conveying of PVC powder has been done many times by Dynamic Air Inc using a system having a very low air to material ratio. The conveying velocity can be as low as 300 feet per minute or as high as desired. To verify this capability you may test your PVC powder at any of our test centers located around the world. Depending upon the distance and convey rate will of coarse determine the actual line size and compressed air required. Therefore to determine exact design parameters we suggest testing be performed. ■

Hello,

Can anybody give me any list of references of articles related to pressure drop at the starting point in the blow tank ! I am looking for any functional relationship with Riser pipe diameter, height from blow tank floor, loading ratio etc !!!!!!

Can anybody help me ?!!!! ■