Stability of fluidization

Gel'perin, N. I.; Ainshtein, V. G.; Pogorelaya, L. D.; Nosova, V. V.

doi:10.1007/bf01239784

Cited by 1 publication

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“…The equilibrium idea has been suggested for DFL in [13], for drying by pressure decreasingin [14] and verified by the experiments. The equilibrium idea has been suggested for DFL in [13], for drying by pressure decreasingin [14] and verified by the experiments.…”

Section: Pi(t) and And(p) Are Assumed In This Modelsmentioning

confidence: 83%

“…1drying camera with lenght 0.7 m and diameter 0.15 m, 2net, 3 filter, 4 and 5valves, 6 condensator, 7 bulb for the condensate, 8 vacuum pump, 9 brsking unit, 10electric heater, 11autoconnected transformer, 12 vacuum manometer, 13 manometer, 14 merciiry thermometer, 15 thermistor, 16 psychrometer, 17 calibrated hole, 18differential manometer, 19 registering apparatus, 20 sampler.…”

mentioning

confidence: 99%

“…These readings proved to be constant with a mistake lower than the error in observation, which resulted in such conclusions: the difference between T and the temperature of the HC in the fluidized layer is negligible, the fluidized layer is isothermal [3], the heat exchange between the material and the HC is finished in the layer nearest to net [13]. The special experiments were made to determine the difference between their values, in which thermometer 15 T-readings before and after the cut of the HC supply were registered.…”

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confidence: 99%

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Study and theoretical modelling of the drying of the aminoacids – The products of microbial synthesis

Saduikov¹,

Migunov²,

Karpov³

et al. 1985

Acta Biotechnologica

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Some properties of thc pure aminoacidsthe products of the microbiological synthesis as an object of drying are established by the experiments. It is shown that the vacuum-oscillating drying method is the effective solution of the technological problem of drying the Leucine, Isoleucine, Triptophnn and Threonin. The mathematical model of this process is elaborated, whose adeqaacy is verified by experiments. This model may be used for technological calculations and for technology optimization.Microbiological synthesis is the most effective way of producing the L-aminoacids now. The drying is the final stage of this process is playing an important role because of its great influence on the quality of the product. Thus the detailed study of the process fundamentals, theoretical and experimental substantiation of the adopted solutions are required in designing of the stage. As it is stated [l, 21, the aminoacids are non-thermostable materials; the quantity influence of the heating effect of drying on the aminoacids consistence in mushrooms was studied in [2]. The analysis of the drying means extended in microbiological industry [3-61 shows, that according to a number of considerations the methods with "mild" regimes of heating effect, such as vacuum drying and drymg in fluidized layer (DFL), are suitable to aminoacids. This article deals with the study of the problems of the application of these two drying methods and their combinationvacuum-oscillating method (VOD) [7] for drying of L-leucine (Leu), L-isoleucine (Ue), L-tryptophan (Trp), L-threonin (Thr) and with the elaboration of the physical and mathematical models of these processes. Experimental MethodsThe possibilities of vacuum drying of the aminoacids have been studied in the experimental vacuum dryer with heated rotor-coil pipe and walls [8]. It is stated that these materials are disposed to agglomerate and to stick to the rotor and walls (in particular Thr), which brings to naught the mixing vacuum drying advantages and confirms the remark [5] on the difficulty of the paste product drying. The investigation of DFL and VOD were carried out on installation [9, 101 Fig. 1. Experimentson VOD were started with the heating of the installation with hot air, after

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Section: Pi(t) and And(p) Are Assumed In This Modelsmentioning

confidence: 83%

mentioning

confidence: 99%

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confidence: 99%

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