Pulse Jet Cleaning Systems

in paragraph entitled "Particulate Removal Performance Guarantees." The

fabric filter baghouses will be operated on the suction side of the induced

draft fans, as indicated. Each fabric filter baghouse shall have a minimum

of four lighted modules. The modules shall be arranged in two rows with

the inlet and outlet flue gas manifolds located between the rows of

modules. The design and arrangement of the fabric filter baghouses shall

complement the spray dryer absorbers, fans and ductwork such that the

complete Flue Gas Cleaning System installation meets the space requirements

indicated. Each fabric filter baghouse shall be provided with framing for

a penthouse area as required to allow bag replacement, [damper and damper

operator maintenance] [and] [pulse valve maintenance] in a protected

environment. Structural design requirements shall be as specified in the

paragraphs entitled "Fabric Filter Baghouses," "Structural and

Miscellaneous Steel," and in this paragraph. Submit information on the

categories general arrangement, foundation design, structural fabrication,

piping, erection, insulation, instrumentation, internal arrangement, and

valves. Exterior ferrous metal surfaces of the baghouse system including,

but not limited to, fabric filter baghouse modules, hoppers, support

structures, manifolds, handrails, and kickplate shall be properly cleaned

and shop primed, as specified. Surfaces that will be exposed to the flue

gas flow need not be painted, but shall be protected during shipment and

storage with a suitable rust-preventative coating, as recommended by

manufacturer. The fabric filter baghouses shall conform to ICAC F-2, ICAC

F-3, and ICAC F-5.

2.8.1

Pulse Jet Cleaning Systems

**************************************************************************

NOTE: Air compressor is specified in paragraph

entitled "Two-Fluid Nozzle Atomizers."

**************************************************************************

NOTE: Factors involved in selecting fabric filter

bag materials include:

1.

Duration of cleaning.

2.

Type of cleaning arrangements.

3.

System temperature level.

4.

Coal type.

5.

Sulfur dioxide removal efficiency.

NEEDLED felts are most commonly specified for

pulse-jet units. Precoat bags with fly ash prior to

operation. Fabric specifications are dependent upon

material.

**************************************************************************

NOTE: Insert appropriate Section number in the

blanks below.

**************************************************************************

The fabric filter baghouse assembly shall be of modular construction. The

inner housing casing and tube sheet of each module shall be fabricated from

SECTION 15864N

Page 44