Section NR 464.03 - Standards for the pulping system at kraft, soda and semi-chemical processes(1) The owner or operator of each pulping system using the kraft process subject to the requirements of this chapter shall control the total HAP emissions from the following equipment systems, as specified in subs. (3) and (4): (a) At existing affected sources, the total HAP emissions from the following equipment systems shall be controlled: 2. Each knotter or screen system with a total HAP mass emission rate greater than or equal to the rate specified in subd. 2. a. or b. or the combined rate specified in subd. 2. c.: a. Each knotter system with emissions of 0.05 kilograms or more of total HAP per megagram of ODP (0.1 pounds per ton).b. Each screen system with emissions of 0.10 kilograms or more of total HAP per megagram of ODP (0.2 pounds per ton).c. Each knotter and screen system with emissions of 0.15 kilograms or more of total HAP per megagram of ODP (0.3 pounds per ton).3. Each pulp washing system.4. Each decker system that does one of the following:a. Uses any process water other than fresh water or paper machine white water.b. Uses any process water with a total HAP concentration greater than 400 parts per million by weight.5. Each oxygen delignification system.(b) At new affected sources, the total HAP emissions from the equipment systems listed in par. (a) 1., 3. and 5. and all of the following equipment systems shall be controlled: 4. Each weak liquor storage tank.(2) The owner or operator of each pulping system using a semi-chemical or soda process subject to the requirements of this chapter shall control the total HAP emissions from the following equipment systems, as specified in subs. (3) and (4). (a) At each existing affected sources, the total HAP emissions from each LVHC system shall be controlled.(b) At each new affected source, the total HAP emissions from each LVHC system and each pulp washing system shall be controlled.(3) Equipment systems listed in subs. (1) and (2) shall be enclosed and vented into a closed-vent system and routed to a control device that meets the requirements specified in sub. (4). The enclosures and closed-vent system shall meet the requirements specified in s. NR 464.08.(4) The control device used to reduce total HAP emissions from each equipment system listed in subs. (1) and (2) shall do one of the following: (a) Reduce total HAP emissions by 98% or more by weight.(b) Reduce the total HAP concentration at the outlet of the thermal oxidizer to 20 parts per million or less by volume, corrected to 10% oxygen on a dry basis.(c) Reduce total HAP emissions using one of the following:1. A thermal oxidizer designed and operated at a minimum temperature of 871°C (1600 °F) and a minimum residence time of 0.75 seconds.2. A boiler, lime kiln or recovery furnace by introducing the HAP emission stream with the primary fuel or into the flame zone.3. A boiler or recovery furnace with a heat input capacity greater than or equal to 44 megawatts (150 million British thermal units per hour) by introducing the HAP emission stream with the combustion air.(5) Periods of excess emissions reported under s. NR 464.11 are not a violation of subs. (3) and (4) provided that the time of excess emissions, excluding periods of startup, shutdown or malfunction, divided by the total process operating time in a semi-annual reporting period does not exceed any of the following levels: (a) One percent for control devices used to reduce the total HAP emissions from the LVHC system.(b) Four percent for control devices used to reduce the total HAP emissions from the HVLC system.(c) Four percent for control devices used to reduce the total HAP emissions from both the LVHC and HVLC systems.Wis. Admin. Code Department of Natural Resources NR 464.03
CR 00-175: cr. Register March 2002 No. 555, eff. 4-1-02.