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On the laboratory model two-stage pyrolysis of hard coal and copyrolysis of coal with carbonaceous additives were studied. In the first stage (900°C) coke was obtained in the vertical quartz reactor. Volatile products were pyrolysed in the second stage (1100°C) of the horizontal quartz reactor, where depending upon the steady field of temperature three different forms of pyrolytic carbon were got...
In the paper the servo drive unit with servo valve are discussed. Their most important non-linearities are described and characterised. The coefficient values characterising the dynamic proper-ties of such servo drives are given. In the paper the simulation model of a servo drive with a servo valve is proposed. The main nonlinearities are included into a model. The simulation and investigation results...
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