Boilers that operate under the special requirements of this
rule, and that do not burn hazardous waste containing (or derived from) EPA
hazardous waste numbers F020, F021, F022, F023, F026, or F027, are considered
to be in conformance with the destruction and removal efficiency (DRE) standard
of paragraph (A) of rule
3745-266-104
of the Administrative Code, and a trial burn to demonstrate DRE is waived. When
burning hazardous waste:
(A) A
minimum of fifty per cent of fuel fired to the device must be fossil fuel,
fuels derived from fossil fuel, tall oil, or, if approved by the director on a
case-by-case basis, other nonhazardous fuel with combustion characteristics
comparable to fossil fuel. Such fuels are termed "primary fuel" for purposes of
this rule. (Tall oil is a fuel derived from vegetable and rosin fatty acids.)
The fifty per cent primary fuel firing rate must be determined on a total heat
or mass input basis, whichever results in the greater mass feed rate of primary
fuel fired;
(B) Boiler load must
not be less than forty per cent. Boiler load is the ratio at any time of the
total heat input to the maximum design heat input;
(C) Primary fuels and hazardous waste fuels
must have a minimum as-fired heating value of eight thousand Btu per pound, and
each material fired in a burner where hazardous waste is fired must have a
heating value of at least eight thousand Btu per pound, as-fired;
(D) The device must operate in conformance
with the carbon monoxide standard provided by paragraph (B)(1) of rule
3745-266-104
of the Administrative Code. Boilers subject to the waiver of the DRE trial burn
provided by this rule are not eligible for the alternative carbon monoxide
standard provided by paragraph (C) of rule
3745-266-104
of the Administrative Code;
(E) The
boiler must be a watertube type boiler that does not feed fuel using a stoker
or stoker type mechanism; and
(F)
The hazardous waste must be fired directly into the primary fuel flame zone of
the combustion chamber with an air or steam atomization firing system,
mechanical atomization system, or a rotary cup atomization system under the
following conditions:
(1) Viscosity. The
viscosity of the hazardous waste fuel as-fired must not exceed three hundred
SSU;
(2) Particle size. When a high
pressure air or steam atomizer, low pressure atomizer, or mechanical atomizer
is used, seventy per cent of the hazardous waste fuel must pass through a two
hundred mesh (seventy-four micron) screen, and when a rotary cup atomizer is
used, seventy per cent of the hazardous waste must pass through a one hundred
mesh (one hundred fifty micron) screen;
(3) Mechanical atomization systems. Fuel
pressure within a mechanical atomization system and fuel flow rate must be
maintained within the design range taking into account the viscosity and
volatility of the fuel;
(4) Rotary
cup atomization systems. Fuel flow rate through a rotary cup atomization system
must be maintained within the design range taking into account the viscosity
and volatility of the fuel.
