Abstract
Theoretical and experimental research results of processes of finely dispersed coal-water slurry preparation for further generation of energetic gas in direct flow and vortex gas generator plants have been presented. It has been stated that frequency parameters of parabolic vibration impulse mill influence degradation degree. Pressure influence on coal parameters in grinding cavity has been proven. Experimental researches have proven efficiency of vibration impulse mill with unbalanced mass vibrator generator development. Conditions of development on intergranular walls of coal cracks have been defined.
Highlights
Operational experience of direct flow and vortex gas generator plants [1,2,3,4,5,6] allows making a conclusion that finely dispersed coal-water slurry processes (FDCWS), gasification process and receivable raw material refining make main costs at energetic gas production. It is known [5,6,7,8] that geometric parameters of coal particles in FDCWS composition should not exceed 10·10-6 m [9,10,11]
Vibration impulse mill consists of a body set on a vibration basement and connected with it by means of a spherical bearing, asymmetric parabolic cone and two unbalance vibrators one of which rotates around the axis of parabolic cone and the other – around the axis of the body
Changing frequency of rolling movement of internal parabolic cone and static moment of unbalance at unchanged profile of grinding cavity, in open cycle conditions, it is possible to receive any granulometric composition of slurry within the limits of curves shown in pic. 5
Summary
Operational experience of direct flow and vortex gas generator plants [1,2,3,4,5,6] allows making a conclusion that finely dispersed coal-water slurry processes (FDCWS), gasification process and receivable raw material refining make main costs (up to 70...80%) at energetic gas production. It is known [5,6,7,8] that geometric parameters of coal particles in FDCWS composition should not exceed 10·10-6 m [9,10,11]. - dynamics of parabolic vibration impulse mills influence; - vibration impulse grinding forces with optimization ratio of their components; - ways of technological process of vibration impulse influence on product able to be ground indexes control
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