By G.E. Klinzing, F. Rizk, R. Marcus, L.S. Leung
Pneumatic conveying is without doubt one of the preferred equipment of dealing with bulk powdered and granular fabrics in mining, chemical and agricultural industries. This third variation of this winning ebook covers either theoretical and sensible elements of the topic.
It is exclusive in its mixing of educational fabrics and stable business layout concepts. each one subject is roofed intensive, with emphasis put on the most recent ideas, structures and layout and study technique. Its entire labored examples and tables make sure that the reader needn't seek advice the other reference material.
In this third variation new sections on simulation and modelling were extra, whereas using tomography as a device for tracking pneumatic conveying can be covered.
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Extra info for Pneumatic Conveying of Solids: A theoretical and practical approach
3 The Solution . . . . . . . . . . . . . . . . . . . . . . . 6 Dilute Phase Pneumatic Conveying System Design (Method 3) . 1 Introduction . . . . . . . . . . . . . . . . . . .. . . . . 2 The Problem.. . . . . . . . . . . . . . . . . . . . . . . 3 The Solution . . . . . . . . . . . . . . . . . . . . . . . 7 Dense Phase Pneumatic Conveying System Design . . .. . . . . 1 Introduction .
Observations  of stationary bed flow indicate that solids which have been deposited at a higher velocity are more difficult to remove. Pietsch  reports the formation of a hard crust on the walls of a pneumatic conveyor. Several factors may account for the influence of velocity . 1. A faster moving particle may have a larger area of contact when it comes to rest on the bed of deposited solids because it can deform minute asperities at its contact points plastically on impact. Thus the van der Waals forces holding the particle will be much increased.
A length of horizontal pipe is provided long enough to ensure that the particles can be accelerated from rest to some average conveying velocity. There is an acceleration pressure loss associated with the acceleration zone. 2 Factors Contributing to Pressure Losses (Chapters 4–6) Once the particles have been introduced into the flowing gas stream, a number of factors come into effect. 9 Putting It All Together 19 Fig. 8 Typical system layout of ways to an additional pressure loss. In particular, there is a certain amount of particle–wall interaction in which the solids randomly collide with the conveying pipe wall, whilst at the same time such phenomena as particle–particle interactions take place due to the collisions between particles themselves.