Fuel supply governing device

Abstract From the Canadian patent

When burning black liquor obtained during cellulose pulp manufacture it is desirable to maintain a constant atomizing pressure. Mere throttling of the liquor supply in order to adjust the combustion to actual heat demand will alter the spray pattern. A pressurized gaseous fluid is injected into the liquor supply conduit and the amount of this, gaseous fluid is governed in response to the actual heat demand. A monitoring device senses the pressure in the supply conduit downstream of the throttle valve and adjusts the, position of the latter in response to the activity caused by the gaseous fluid, so the resulting pressure is maintained at the desired level.