The Ohio Environmental Protection Agency went out for comment on Oct. 28 on a draft air permit-to-install that would allow P.H. Glatfelter to back out coal at its Kraft paper mill located in Chillicothe, Ross County, Ohio.
This is an administrative modification to an existing permit-to-install (PTI) issued in July 2015 (for emissions units B002 and B003) and another PTI issued in February 2015 (for emissions unit B013). The administrative modification addresses the conversion of boiler B002 and B003 from coal/No. 2 fuel oil firing to natural gas/No. 2 fuel oil firing. The project also includes the addition of a fourth wet electrostatic precipitator (WESP) module on boiler B013.
The permit also addresses the incorporation of standards and facility-wide SO2 limitation to avoid the U.S. EPA’s Data Requirement Rule (DRR) for the 2010 1-hour SO2 primary NAAQs. A federally enforceable synthetic minor facility-wide restriction of 1,562 tons of S02, per rolling, 12-month summation has been placed in the permit to avoid the DRR requirements.
In addition, the facility is restricting the sulfur content of the oil burned in emissions units B002, B003, B011, B013, B014, and B015 to not exceed 1.15% sulfur by weight.
- Emission unit B002 (Boiler #7) was a wet bottom, pulverized coal-fired boiler having a maximum heat input capacity of 422 million BTU per hour, capable of firing #2 fuel as back up fuel, and is a backup control device for non-condensable gases generated by other facility emissions units. The unit was controlled with a cyclone/multi-clone, and electrostatic precipitator, a low nitrogen oxides concentric firing system and a vane close-coupled over fire air compartment. The unit is being converted to a natural gas-fired boiler having the same maximum heat input capacity, capable of firing number 2 fuel oil as backup fuel, and is a backup control device for non-condensable gases. The unit is equipped with eight natural gas burners and four oil burners.
- Emission unit B003 (Boiler #8) was a wall-fired, pulverized coal-fired boiler having a maximum heat input capacity of 505 million BTU per hour, capable of firing number 2 fuel oil as backup fuel, and is a backup control device for non-condensable gases generated by other facility emissions units. The emissions unit was controlled with cyclone/multi-clone low-NOx staged combustion burners and an electrostatic precipitator. The emissions unit is converting to a natural gas-fired boiler having a 555 million BTU per hour maximum heat input capacity. The unit is capable of firing number 2 fuel oil as backup fuel, and is a backup control device for non-condensable gases. The emissions unit is equipped with four natural gas/oil burners and two natural gas burners.
- Emissions unit B013 (Boiler #6) is a wood residue boiler rated at 539 MMBtu/hr (limited to 400 MMBtu/hr) controlled with cyclones, a wet scrubber, and a WESP. The unit is fueled by #2 fuel oil, tire-derived fuel, non-condensable gases, dewatered sludge, and other milled wood wastes. A fourth module to the WESP is being added to this unit as part of the project.
A public hearing on the draft air permit is scheduled for Dec. 6 at the Auditorium at Ohio University-Chillicothe. Written comments on the draft permit must be received by Dec. 13.