Pulverized-fuel meters for fossil fuel burning power stations

摘要

The combustion efficiency of coal-fired power stations can be improved if three critical parameters, relating to the flow of pulverised fuel, are measured and (ideally) controlled. These are the solids velocity, the solids distribution between pipes or 'split' and the particle size. Three prototype devices manufactured by ABB Instrumentation which measure these parameters were fitted to 14" (350mm) diameter pneumatic conveyors leading to the furnace burners at the Scottish Power plant, Methil Power Station in Scotland. This paper describes the systems used and presents some of the test results. The instrumentation will be commercially available in 1998.