Current through August 26, 2024
(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:
1. Each LVHC
system.
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:
1. Each knotter system.
2. Each screen system.
3. Each decker system.
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.
