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Show 4.2 Hamworthy Research and Development Test Facility This facility is equipped with a full complement of support equipment and capabilities, including fuel handling systems which allow the simulation of any blend of liquid and gaseous fuel. The provisions for preheated combustion air and FGR ensure that operational requirements for any application can properly be simulated. Standard instrumentation is maintained in the facility to measure NOu CO, O2, and particulate matter. The research facility combustion chamber is designed to simulate the thermal environment of a watertube boiler or a large process heater and has a maximum design firing rate of 150 MMBtuJhr. Figure 4 shows the arrangement of the test furnace. The combustion chamber is completely water cooled at atmospheric pressure with the exception of the front wall, which is refractory lined. The burner is mounted in a refractory lined mounting plate at the front wall, and the flue gas exits at the top of the opposite end. Multiple viewing and probing ports are available all around the chamber. However, the majority of these ports are positioned along the furnace horizontal center lines coinciding with the flame axis. 4.3 Grayson Units 3 and 4 Grayson Unit 3 is a Babcock and Wilcox boiler that was tint put into service in 1953. The unit generates 20 MW of electricity at full load. Minimum load is approximately 5 MW. The boiler produces at full load 215,000 Ib/hr of superheated steam at 9oo-F and 860 pq. The boiler is equipped with primary and secondary superheateD and a vertical shaft Ljungstrom regenerative air heater. The unit, however, does not have a reheater or an economizer. The furnace is designed for balanced draft operation and is front wall fired with four burners arranged in two rows with two burners in each row. -12- |
