OCR Text |
Show 700-hp boiler at 75 percent load, the emissions of SO2, N O x , and uncontrolled fly ash were 2100 ppm (or 3.51 lb/MBtu), 516 ppm (or 0.60 lb/MBtu), and 164 lb/hr (or 6.35 lb/MBtu), respectively. CONCLUDING REMARKS As a result of advances in coal-oil mixture technology achieved at PETC and elsewhere, the use of COM in oil-designed boilers has been shown to be technically feasible. The Department of Energy has completed its COM program. Commercialization of the technology is now being pursued in the industrial sector. The feasibility of using solvent-refined coal in oil-designed boilers has recently been demonstrated in the PETC 100-hp firetube boiler at significantly higher heat liberation rates than in a coal-designed utility boiler at Plant Mitchell, where SRC-I was successfully burned in 1977. The planned SRC-I tests in PETC's 700-hp watertube boiler will further ascertain the technical prospects of utilizing SRC-I in oil-designed industrial boilers. An investigation of coal-water mixture technology has recently been initiated at PETC. It has already been demonstrated that a CWM fuel prepared by conventional techniques can be burned in an oil-designed firetube boiler without extensive modifications. Systematic studies are now being conducted in a 700-hp watertube boiler to determine the long-term effects of CWM fuels on the operability of oil-designed boilers. 14-17 |