OPERATING AND TESTING A COMBINED SO2 AND NOX REMOVAL FACILITY

Test results and operational procedures of a 32,000 Nm/hr combined SO//2 and NO//x removal facility utilizing electron beam technology and dry ammonia injection are discussed in detail, showing how the facility can be operated to give maximum removal efficiencies and optimum utility requirements. To date, the overall plant design efficiencies of 90% SO//2 and NO//x removal efficiency have been achieved. A brief history of the development of the process along with a description of the plant is presented. Performance of the plant is compared to previous similar pilot plants operated in Japan, and the influences of process parameters on the plant operation and removal efficiencies are discussed. Use of an alternative reagent and its effect on removal efficiencies and plant operation is presented, followed by results of analysis of the fertilizer by-product yielded by the process.