Chemical Engineering for the Food Industry by D. Leo Pyle, Peter J. Fryer, Chris D. Reilly PDF

Chemical Engineering for the Food Industry by D. Leo Pyle, Peter J. Fryer, Chris D. Reilly PDF

By D. Leo Pyle, Peter J. Fryer, Chris D. Reilly

This ebook covers many topics within the box of foodstuff know-how, together with approach layout, risk and possibility research, warmth and mass move and foodstuff rheology. every one part conscientiously explains the methods mentioned and covers intimately lots of their vital purposes within the meals undefined. Accompanying the e-book is a pc-compatible machine diskette, containing brief programmes of use in making plans strategies. "Chemical Engineering for the meals undefined" might be an invaluable textual content for all these operating in nutrition processing and for these instructing and learning this crucial topic.

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9 Torula yeast (C. utilis) is a food grade yeast that can be produced by fermentation of complex sugars. The yeast is produced continuously in a fermenter of capacity 50 m3 operating at 35°C. The liquid feed contains 10wt% substrate and is fed at 50 kg min-I. 5kg/kg substrate fed. 6 kg/kg yeast consumed and is supplied as air at twice that rate. The conditions in the fermenter are indicated in Fig. 1. 17. The mixer has a power drive of 100 kW: neglecting losses in the motor and shaft we assume that 100 kW of (shaft) work is put into the fermenter contents.

However, an attempt to solve the problem 'backwards', by solving around separator 2 first, would be unsuccessful: it is often found preferable for the directions of the material and information flows to coincide. Note that the balances on the individual units must always be consistent with the overall balance. 4 Recycles Recycle streams are very common in process technology. They are used for various reasons and, in particular, to conserve material and to increase process efficiency. The carbon dioxide loop in Fig.

27) Conclusions In this section we have introduced some of the basic ideas of mass balances and their application to design and operational control in the process indus- 24 INTRODUCTION TO PROCESS DESIGN try. Today many of the calculation procedures mentioned above are carried out routinely by computer, using one of the many flowsheeting or design programs that are now available. We should not allow ourselves to be mystified by the apparent sophistication and power of these methods: the fundamental principles are based on the laws of conservation, which have been introduced here.

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