Emissions Calculations for #7 Boiler


As Submitted by Virginia Tech





SOURCE: Virginia Tech                                  LOCATION:    Blacksburg        REGISTRATION NO: 20124
EQUIPMENT:   No.   7   Boiler   (Overfeed-Stoker   Coal   Boiler)
FUEL: Coal

POLLUTANT                             TSP                     PH-10                    SO2                    NOX                       co                    voc                   Lead

POTENTIAL UNCONTROLLED EMISSIONS
Max Rated   Capacity:            156 MMBtu/hr              156 MMBtu/hr            156 MMBtu/hr          156 MMBtu/hr               156 MMBtu/hr         156 NNBtu/hr            156 MMBtu/hr
                                  5.89 ton/hr               5.89 ton/hr             5.89 ton/hr           5.89 ton/hr                5.89 ton/hr          5.89 ton/hr            5.89  ton/hr
Emission Factor:                   16 lb/ton                 6 lb/ton              39 x S lb/ton           7.5 lb/ton                 6 lb/ton            0.07 lb/ton          0.013 lb/MMcu.ft
 Reference:                     EIS SCC 10300207         EIS SCC 10300207        EIS SCC 110300207      EIS SCC 10300207           EIS SCC 10300207     EIS SCC 10300207       EIS SCC 10300207
Fuel Sulfur Content:                  NA                        NA                     1.5                      NA                       NA                   NA                     NA
Operating Schedule:                8760 hrs/yr              8760 hrs/yr              8760 hrs/yr           8760 hrs/yr               8760 hrs/yr          8760 hrs/yr            8760 hrs/yr
Emissions:                        94.24 lbs/hr             35.34 lbs/hr             344.57 lbs/hr         44.18 lbs/hr               35.34 lbs/hr         0.41 lbs/hr            0.08 lbs/hr
                                 412.77 tons/yr           154.79 tons/yr           1509.19 tons/yr       193.49 tons/yr            154.79 tons/yr        1.81 tons/yr           0.34 tons/yr

MAXIMUM EMISSIONS
Maximum Throughput:                5.89 tons/hr            5.89 tons/hr             5.89 tons/hr          5.89 tons/hr              5.89 tons/hr          5.89 tons/hr          5.89  tons/hr
                                  13214 tons/yr           13214 tons/yr            13214 tons/yr         13214 tons/yr             13214 tons/yr         13214 tons/yr          13214 tons/yr
Equiv.  Capacity Factor:             25.6%                    25.6 %                   25.6 %                25.6 %                    25.6%                25.6 %                 25.6 %
Uncontrolled Emissions:            94.24 lbs/hr            35.34 lbs/hr             344.57 lbs/hr         44.18 lbs/hr              35.34 lbs/hr          0.41 lbs/hr            0.08 lbs/hr
                                 105.712 tons/yr          39.64 tons/yr            386.51 tons/yr        49.55 tons/yr             39.642 tons/yr         0.46 tons/yr           0.09 tons/yr
Control Efficiency:                   55%                     16.7 %                    0 %                   0 %                       0 %                  0 %                   55 %
Control Method:                  multicyclone             multicyclone                none                   none                    none                   none                multicyclone
Controlled Emissions:             42.41 lbs/hr              29.44 lbs/hr            344.57 lbs/hr         44.18 lbs/hr              35.34 lbs/hr          0.41 lbs/hr            0.03 lbs/hr
                                 47.57 tons/yr             33.02 tons/yr           386.51 tons/yr        49.55 tons/yr             39.64 tons/yr          0.46 tons/yr          0.04 tons/yr

WSPS/PERMIT LIMITS
Missions Limit:                 0.294 lbs/MMBtu           0.294 lbs/MMBtu           NA lbs/MMBtu           NA lbs/MMBtu             NA lbs/MMBtu          NA lbs/MMBtu          NA lbs/MBBtu

PERMITTED EMISSIONS
Reference:                        1977 Permit                1977 Permit           Emission Factors      Emission factors         Emission Factors     No limit necessary      No limit required
Emissions Limit:                0.294 lbs/MMBtu            0.294 lbs/MMBtu           344.6 lbs/hr          44.2 lbs/hr              35.3 lbs/hr         No modelling done         Emissions
                                   45.9 lbs/hr               45.9 lbs/hr            386.5 tons/yr         49.6 tons/yr              39.6 tons/yr        PSD Significance         0.5  tons/yr
                                  51.5 tons/yr              51.5 tons/yr								                  not an issue
                                                                                                                                                     

MODELLED EMISSIONs
Short Term:                        45.0 lb/hr                45.9 lb/hr              344.6 lb/hr            44.2 lb/hr              35.3 lb/hr             NA lbfhr               NA lb/hr

Long Term                         5.554 g/s                  5.554 g/s              41.696 g/s             5.348 g/s               4.2Tl g/s               NA g/s                 NA g/s
                                  11.8 lb/hr                 11.8 lb/hr              88.2 lb/hr             11.3 lb/hr              NA lb/hr               NA lb/hr               NA lb/hr
                                   1.423 g/s                 1.423 g/s               10.677 g/s             1.37G g/s                NA g/s                 NA g/s                 NA g/s