Böcker av Peter Hilgraf

Bulk materials are processed and refined in many industrial plants. They are transported back and forth between the various process steps. If bulk materials are dust-fine to coarse-grained, they can be transported pneumatically through pipelines with flowing gas - over distances of several metres to several kilometres.This book introduces the basics of pneumatic conveying, the construction of plants and their operation. The first three chapters deal with the physical properties of the bulk material and the conveying gas as well as their behaviour in gas-solid systems. The following chapter describes the application of these basics in pneumatic conveying: starting with different flow forms, via processes at the plug, up to pressure loss in pneumatic conveying lines. The following sections are devoted, among other things, to calculation approaches for the transfer of test models to large-scale systems, as well as to modern dense-phase conveying methods in which material to be conveyed moves at low speed in the form of threads, plugs or flowing. Separate chapters deal with the design of pneumatic conveying systems and various forms and causes of their wear.The book offers calculation examples for many topics and is state of the art. It is aimed at engineers, plant constructors and operators of product lines with pneumatic conveying. They benefit from the author's decades of experience in the development and design of plants with new conveying processes.