NOx (tpy) Coking Staged 1.0 lb per wet ton 6.25 6.25 operations combustion of coal with heat charged recovery steam generators and lime spray dryer – main stack when the lime spray dryer is bypassed. Process BACT BACT Limitation BACT Emission Rate for Operations Control Technology H2SO4 (tpy) Coking Limiting the annual 91.5 lbs per hour. 5.49 operations maintenance to no with heat more than five recovery days per year; and steam by following good generators work practices and lime which shall reduce spray dryer SO2 emissions by – main stack 28 percent. when the lime spray dryer is bypassed. Middletown Coke Company presented two possible control options to control emissions HRSG maintenance. These two options are employing a spray quench system at each HRSG to cool individual waste heat gases and the other option is to install additional HRSGs and increase the size of the waste heat tunnel over current design specifications. Both options were deemed not technically feasible. However, in both cases, Middletown Coke Company presented documentation in the application that it was not cost effective to use either one of these options. Based upon that analysis, the following was deemed to satisfy BACT/LAER requirements. Process BACT LAER/ LAER/ LAER BACT BACT Control BACT BACT Opacity Rate Rate on for for Rate PM2.5 for PM (tpy) (tpy) Waste gas Work Visible Based 12.6 12.6 12.6 from upon the limit coking HRSG of
NOx (tpy) Coking operations with heat recovery steam generators and lime spray dryer – main stack when the lime spray dryer is bypassed. Staged combustion 1.0 lb per wet ton of coal charged 6.25 6.25 Process Operations BACT Control Technology BACT Limitation BACT Emission Rate for H2SO4 (tpy) Coking operations with heat recovery steam generators and lime spray dryer – main stack when the lime spray dryer is bypassed. Limiting the annual maintenance to no more than five days per year; and by following good work practices which shall reduce SO2 emissions by 28 percent. 91.5 lbs per hour. 5.49 Middletown Coke Company presented two possible control options to control emissions HRSG maintenance. These two options are employing a spray quench system at each HRSG to cool individual waste heat gases and the other option is to install additional HRSGs and increase the size of the waste heat tunnel over current design specifications. Both options were deemed not technically feasible. However, in both cases, Middletown Coke Company presented documentation in the application that it was not cost effective to use either one of these options. Based upon that analysis, the following was deemed to satisfy BACT/LAER requirements. Process BACT Control LAER/ BACT Opacity LAER/ BACT LAER Rate for PM2.5 (tpy) BACT Rate for BACT Rate for PM (tpy) Waste gas from the coking Work limit HRSG Visible Based upon of 12.6 12.6 12.6 on
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