S.C. Code Regs. § § 61-62.5.5.2.III

Current through Register Vol. 48, No. 10, October 25, 2024

Section 61-62.5.5.2.III - SECTION III - STANDARD REQUIREMENTS FOR NEW AFFECTED SOURCES

(A) Those affected sources as defined in Section I(A)(1) and (A)(3) above shall apply NO_X controls to achieve the limitations provided in Table 1 of this section. Unless otherwise noted, all emission limits for affected sources required to use Continuous Emissions Monitoring (CEMS) shall be based on thirty (30) day rolling averages.

(B) An affected source may request an alternate control limitation by submitting a demonstration that the alternate limitation is a Case-by-Case NO_X Control as defined in Section II above.

(C) The Department reserves the right to request that the owner or operator submit additional information for those affected sources that request alternate control limitation in accordance with Section III(B) above.

(D) Affected sources required to install post combustion technology for the control of NO_X shall be required to use post combustion for the control of NO_X during the ozone season.

Table 1 - NO_X Control Standards

Source Type	Emission Limit

Propane and/or Natural Gas-Fired Boilers
>=10 million British thermal units per hour (MMBtu/hr) and < 100 MMBtu/hr	Low-NO_X Burners or equivalent technology, shall achieve 0.036 pounds per million British thermal units (lb/MMBtu)
>=100 MMBtu/hr	Low-NOX Burners + Flue Gas Recirculation or equivalent technology, shall achieve 0.036 lb/MMBtu
Distillate Oil-Fired Boilers
>=10 MMBtu/hr and < 100 MMBtu/hr	Low-NOX Burners or equivalent technology, shall achieve 0.15 lb/MMBtu
>=100 MMBtu/hr	Low-NO_X Burners + Flue Gas Recirculation or equivalent technology, shall achieve 0.14 lb/MMBtu
Residual Oil-Fired Boilers
>=10 MMBtu/hr and < 100 MMBtu/hr	Low-NO_X Burners or equivalent technology, shall achieve 0.3 lb/MMBtu
>=100 MMBtu/hr	Low-NO_X Burners + Flue Gas Recirculation or equivalent technology, shall achieve 0.3 lb/MMBtu
Multiple Fuel Boilers
The emission limits for boilers burning multiple fuels are calculated in accordance with the formulas below. Additional fuels or combination of fuels not otherwise listed in this table shall be addressed on a case-by-case basis.
>=10 MMBtu/hr and < 100 MMBtu/hr	E_n = [(0.036 lb/MMBtu H_ng) + (0.15 lb/MMBtu H_do) + (0.3 lb/MMBtu H_ro) + (0.35 lb/MMBtu H_c) + (0.2 lb/MMBtu H_w)]/(H_ng + H_do+ H_ro + H_c + H_w) where: E_n is the nitrogen oxides emission limit (expressed as nitrogen dioxide (NO₂)), ng/J (lb/million Btu), H_ng is the heat input from combustion of natural gas, and/or propane, H_do is the heat input from combustion of distillate oil, H_ro is the heat input from combustion of residual oil, H_c is the heat input from combustion of coal, and Hw is the heat input from combustion of wood residue.
>=100 MMBtu/hr	E_n = [(0.036 lb/MMBtu H_ng) + (0.14 lb/MMBtu H_do) + (0.3 lb/MMBtu Hro) + (0.25 lb/MMBtu Hc) + (0.2 lb/MMBtu Hw)]/(Hng + Hdo+ Hro + Hc + Hw) where: E_n is the nitrogen oxides emission limit (expressed as NO₂), ng/J (lb/million Btu), H_ng is the heat input from combustion of natural gas, and/or propane, H_do is the heat input from combustion of distillate oil, Hro is the heat input from combustion of residual oil, H_c is the heat input from combustion of coal, and H_w is the heat input from combustion of wood residue.
Wood Residue Boilers
All types	Combustion controls to minimize NO_X emissions or equivalent technology, shall achieve 0.20 lb/MMBtu
Coal-Fired Stoker Fed Boilers
< 250 MMBtu/hr	Combustion controls to minimize NO_X emissions or equivalent technology, shall achieve 0.35 lb/MMBtu
>= 250 MMBtu/hr	Combustion controls to minimize NO_X emissions or equivalent technology, shall achieve 0.25 lb/MMBtu
Pulverized Coal-Fired Boilers
< 250 MMBtu/hr	Low-NO_X Burners + Combustion controls to minimize NO_X emissions or equivalent technology, shall achieve 0.35 lb/MMBtu
>= 250 MMBtu/hr	Low-NO_X Burners + Combustion controls to minimize NO_X emissions + Selective Catalytic Reduction (SCR) or equivalent technology, shall achieve 0.14 lb/MMBtu
Municipal Refuse-Fired Boilers
< 250 MMBtu/hr	Combustion modifications to minimize NO_X emissions + Flue Gas Recirculation or equivalent technology, shall achieve 195 ppmv at 12 percent CO₂ (0.35 lb/MMBtu)
>= 250 MMBtu/hr	Staged Combustion and Automatic Combustion Air Control + SCR or equivalent technology, shall achieve 0.18 lb/MMBtu
Internal Combustion Engines
Compression Ignition	Timing Retard < 4 degrees + Turbocharger with Intercooler or equivalent technology, shall achieve 490 ppmv at 15 percent O2 (7.64 gram per bhp-hour (gm/bhp-hr))
Spark Ignition	Lean-Burn Technology or equivalent technology, shall achieve 1.0 gm/bhp-hr
Landfill or Digester Gas-Fired	Lean-Burn Technology or equivalent technology, shall achieve 1.25 gm/bhp-hr
Gas Turbines
Simple Cycle - Natural Gas
< 50 Megawatts	Combustion Modifications (for example, dry low-NO_X combustors) to minimize NO_X emissions or equivalent technology, shall achieve 25 ppmv at 15 percent O₂ Dry Basis
>= 50 Megawatts	Combustion Modifications (for example, dry low-NO_X combustors) to minimize NOx emissions or equivalent technology, shall achieve 9.0 ppmv at 15 percent O₂ Dry Basis
Combined Cycle - Natural Gas
< 50 Megawatts	Dry Low-NOX Combustors or equivalent technology, shall achieve 9.0 ppmv at 15 percent O₂ Dry Basis
>= 50 Megawatts	Dry Low-NO_X Combustors + SCR or equivalent technology, shall achieve 3.0 ppmv at 15 percent O₂ Dry Basis
Simple Cycle - Distillate Oil Combustion
< 50 Megawatts	Combustion Modifications and water injection to minimize NO_Xemissions or equivalent technology, shall achieve 42 ppmv at 15 percent O₂ Dry Basis
>= 50 Megawatts	Combustion Modifications and water injection to minimize NO_Xemissions or equivalent technology, shall achieve 42 ppmv at 15 percent O₂ Dry Basis
Combined Cycle - Distillate Oil Combustion
< 50 Megawatts	Dry Low-NOX Combustors with water injection or equivalent technology, shall achieve 42 ppmv at 15 percent O₂ Dry Basis
>= 50 Megawatts	Dry Low-NO_X Combustors, water injection, and SCR or equivalent technology, shall achieve 10 ppmv at 15 percent O₂ Dry Basis
Landfill Gas-Fired	Water or steam injection or low-NO_X turbine design or equivalent technology, shall achieve 25 ppmv at 15 percent O₂ Dry Basis
Fluidized Bed Combustion (FBC) Boiler
Bubbling Bed	Selective Non-catalytic Reduction (SNCR) shall achieve 0.15 lbs/MMBtu
Circulating Bed	SNCR shall achieve 0.07 lbs/MMBtu
Other
Recovery Furnaces	Fourth (4^th) level or air to recovery furnace/good combustion practices or equivalent technology, shall achieve 100 ppmv at 8 percent O₂ Dry Basis
Cement Kilns	Low-NO_X burners or equivalent technology, shall achieve 30 percent reduction from uncontrolled levels.
Lime Kilns	Combustion controls or equivalent technology, shall achieve 175 ppmv at 10 percent O₂ Dry Basis.
Fuel Combustion Sources burning any non-specified fuel not listed in Table above. (Examples include but are not limited to process heaters not meeting the definition of "boiler" in Regulation 61-62.1 Section I, dryers, furnaces, ovens, duct burners, incinerators, and smelters)	Low-NO_X burners or equivalent technology, shall achieve 30 percent reduction from uncontrolled levels.

S.C. Code Regs. § 61-62.5.5.2.III

Amended by State Register Volume 40, Issue No. 06, eff. 6/24/2016; State Register Volume 41, Issue No. 08, eff. 8/25/2017; State Register Volume 44, Issue No. 04, eff. 4/24/2020.