| OCR Text |
Show comprehensive investigation of optimal methods of burning SRC-I. Rather, the objective of these demonstration test runs was to determine the technical viability of using various SRC-I product forms in an oil-designed boiler and to identify additional necessary technology development. Results of SRC-I Combustion Tests Results of the SRC-I combustion tests were reported earlier. There was no derating of the boiler when firing the slurry and molten forms of SRC-I. Due to design limitations of the available burner, the pulverized form was burned at 50 percent of full load. Carbon-conversion efficiencies were generally 99.7 percent or greater, and boiler efficiencies were about the same as when burning No. 6 fuel oil. SRC Slurry Tests The fuel train of the 100-hp boiler includes a variable-speed Viking feed pump that conveys No. 6 fuel oil to the boiler, a recirculation pump, an electric fuel-heater, and a Micro-Motion mass flowmeter. During the SRC slurry test, slurry was prepared in a mix tank. A recirculation pump recirculated the slurry back to the mix tank, and a transfer pump (a variable-speed Viking pump) delivered the SRC slurry to the boiler. The SRC slurry flow rate was regulated by the variable-speed pump and measured by a Micro-Motion flowmeter, and the slurry was heated to the desired firing temperature by a steam heat exchanger. The air register of the boiler consisted of a block type swirl producer, a natural gas bustle pipe, a center-air tube, and a fire eye sensing device. Two separate burner nozzles were installed in the boiler: a Delavan start-up nozzle for No. 6 fuel oil, and an Industrial Combustion nozzle for SRC slurry.-^ Three-day SRC slurry tests totaling 25-hours were performed at full boiler load. The slurry temperature and viscosity were maintained at 220°F and 150 SSU, 14-11 |
