Okla. Admin. Code § 252:100-31-26

Current through Vol. 42, No. 1, September 16, 2024

Section 252:100-31-26 - Requirements for new petroleum and natural gas processes

Any petroleum and natural gas process that was not in being on or before December 31, 1974 or that is modified after December 31, 1974 shall comply with the following requirements.

(1)Hydrogen sulfide standards and alarm systems.

(A) H2S contained in the waste gas stream from any petroleum or natural gas process equipment shall bereduced by 95% by removal or by being oxidized to SO2 prior to being emitted to the ambient air. This requirement shall not apply if a facility's emissions of H2S do not exceed 0.3 lb/hr, two-hour average.

(B) The owner or operator shall install, maintain, and operate an alarm system that will signal a malfunction for all thermal devices used to control H2S emissions from petroleum and natural gas processing facilities regulated under this subparagraph.

(2)Oxides of sulfur. The following requirements apply to any gas sweetening unit or petroleum refinery process equipment with a sulfur content of greater than 0.54 LT/D in the acid gas stream. Alternatively, any gas sweetening unit or petroleum refinery process equipment with an emission rate of 100 lb/hr or less of SOX expressed as SO2, two-hour average, shall be considered to be below this threshold.

(A)Natural gas sweetening units. The sulfur content of any acid gas stream from any gas sweetening unit shall be reduced by use of a sulfur recovery unit prior to release of the gas to the ambient air. The sulfur recovery units shall have the recovery efficiencies required in (C) through (F) of this subparagraph.

(B)Petroleum refinery processing. Sulfur recovery units operating in conjunction with any refinery process shall have the recovery efficiencies required in (C) through (F) ofthis subparagraph.

(C)Sulfur content greater than 0.54 LT/D but less than or equal to 5.0 LT/D. When the sulfur content of the acid gas stream from a gas sweetening unit or refinery process is greater than 0.54 LT/D but less than or equal to 5.0 LT/D, the recovery efficiency of the sulfur recovery unit shall be at least 75%.

(D)Sulfur content greater than 5.0 LT/D but less than or equal to 150.0 LT/D. When the sulfur content of the acid gas stream from a gas sweetening unit or refinery process is greater than 5.0 LT/D but less than or equal to 150.0 LT/D, the required recovery efficiency of the sulfur recovery unit shall be calculated using the following formula, where Z is the minimum sulfur recovery efficiency required and X is the sulfur feed rate, expressed in LT/D of sulfur and rounded to one decimal place: Z = 92.34X^0.00774.

(E)Sulfur content greater than 150.0 LT/D but less than or equal to 1500.0 LT/D. When the sulfur content of the acid gas stream from a gas sweetening unit or refinery process is greater than 150.0 LT/D but less than or equal to 1500.0 LT/D, the required recovery efficiency of the sulfur recovery unit shall be calculated using the following formula, where Z is the sulfur recovery efficiency required and X is the sulfur feed rate, expressed in LT/D of sulfur and rounded to one decimal place: Z = 88.78X^0.0156.

(F)Sulfur content greater than 1500.0 LT/D. When the sulfur content of the acid gas stream from a gas sweetening unit or refinery process is greater than 1500.0 LT/D, the recovery efficiency of the sulfur recovery unit shall be at least 99.5%.

Okla. Admin. Code § 252:100-31-26

Added at 11 Ok Reg 977, eff 1-14-94 (emergency); Added at 11 Ok Reg 2031, eff 5-26-94; Amended at 19 Ok Reg 1014, eff 6-1-02; Amended at 20 Ok Reg 1603, eff 6-12-03; Amended at 29 Ok Reg 996, eff 7-1-12