The sketch above shows a 115” tall tank which needs to be filled and emptied multiple times with activated alumina desiccant. The desiccant ranges in size from 1/8” to ¼” with a median size of 5/32”, and has a bulk density of 48 pounds/ft³. The material has no fire or spill hazards, and poses a low health risk. (We evaluate these characteristics with every application to ensure the Line Vac is a viable solution.) The end user wanted to find a solution to move the alumina into the tank, and then a method to move it out of the tank. Total material transfer could be as high as 1500 pounds/hour.
Originally, the end user considered the setup shown below. This setup would empty the tank through the top, and then use the same Line Vac to refill.
What the end user and I came to realize, is that we could achieve full automation in emptying the tank by using a dedicated Line Vac with a slide gate. And, another dedicated Line Vac could be used to fill the tank, preventing any toggling of the Line Vac orientation. This was the solution, one Line Vac on the desiccant fill port and one Line Vac on the desiccant empty port.
Because of the high conveyance rate and the requirement for a material which could withstand abrasives, model 150200, our 2″ Heavy Duty Line Vac made of a hardened alloy, was recommended.
If you have a material conveyance application and need a compressed air based solution, contact an EXAIR Application Engineer.