METHOD AND APPARATUS FOR MONITORING AND CONTROLLING HYDROGENATION PRESSURE IN PLANT FOR THE HYDROGENATION OF COAL WITH HYDROGEN TO FORM HYDROCARBONS

摘要

ABSTRACT OF THE DISCLOSUREIn plant for hydrogenating coal to form hydrocarbons,wherein coal in powder or piece form is fed from a hopper intoa preparation chamber, is compressed, conveyed and heated by arotor comprising a rotating friction element and passed,through a feed aperture, into a hydrogenation chamber whereinhydrogen is injected into it by nozzles, monitoring andcontrolling means are provided whereby upon the pressure inthe hydrogenation chamber rising above that in the end ofthe preparation chamber adjacent the hydrogenation chamber, asmeasured by sensors and gauges, the feed aperture is closedand the rotor is stopped. Preferably the feed aperture isclosed by providing a conical portion on the rotor and aconical seat on the cylinder forming the chamber, the rotornormally being held in a position to keep the feed apertureopen by an hydraulic cylinder but upon the pressure sensorssensing over pressure in the chamber, the cylinder is ventedby control means to close the feed aperture. The rotor isalso stopped by the control means.