Process for determination and control of fuel mass flow in partial oxidation and gasification of a fine-grained to powdery fuel

A process for determination and control of fuel mass flow, which is fed to a gasification unit with at least two burners in partial oxidation and gasification of a fine-grained to powdery fuel, using a radiometric fuel density measurement of said fuel conveyed from a central supply vessel to said burners of said gasification unit by a gaseous medium and a process computer for performing required computation operations, comprising the following steps:

• a. drawing said fuel from said supply vessel through a single outlet pipe and feeding said fuel to a distributor, in which a plurality of individual supply lines are connected to said burners individually, said radiometric density measurement being performed only in said outlet pipe of said supply vessel connected to said distributor;
• b. Determining a rate of said fuel mass flow in said supply lines to said individual burners depending on a speed measured there and a density measured in said outlet pipe, no additional conveying gas being mixed with said fuel in said supply lines and a plurality of individual mass flows determined in said supply lines being added in said process computer to obtain a total mass flow of said fuel fed from said supply vessel to said gasification unit;
• and
• c. using a crude gas flow produced in said gasification unit as a guiding variable for stepwise regulation of said total mass flow.