Arapahoe low-sulfur coal Fabric Filter Pilot Plant. Volume 1. Fluid dynamics testing, May-September 1980. Final report

Technical Report · Fri Feb 01 04:00:00 EST 1985

OSTI ID:5916719

Cushing, K M; Wilson, Jr, R R; Smith, W B; Gilbert, G B; Belkus, P R

This report presents the results of a study of fluid dynamics at EPRI's low-sulfur coal Fabric Filter Pilot Plant (FFPP) located at the Arapahoe station of the Public Service Company of Colorado in Denver. The work describes the initial phase of operations of the FFPP. Follow-on studies of fabrics, cleaning methods, and effects of air-to-cloth ratio on pressure drop will be summarized in subsequent volumes. The FFPP is a 10-MW baghouse filtering flue gas on a sidestream from a 110-MW, full-scale, coal-fired boiler at the Arapahoe station. The study's objective was to measure the effects of bag resistance, flow distributors, and hopper inlet flow velocity on pressure drop. To that end, velocity profiles across the hopper inlet and tubesheet, as well as flow patterns in the hopper region and dust reentrainment in a fly ash-loaded hopper, were evaluated for several equipment configurations. Results indicate that proper fluid dynamics design can reduce system pressure drop, thereby lowering operating costs. For example, gas velocities in the hopper inlet exceeding 35 ft/s produced excessive turbulence and fly ash reentrainment in the hopper, and nonuniform velocity profiles across the tubesheet. It was also demonstrated that flow distributors in the hopper inlet helped to improve gas flow patterns in the hopper and to produce more uniform velocity profiles across the tubesheet. 32 figures, 60 tables.

• Research Organization: Southern Research Inst., Birmingham, AL (USA); Dynatech R/D Co., Cambridge, MA (USA)
• OSTI ID: 5916719
• Report Number(s): EPRI-CS-3862-Vol.1; ON: TI85920530
• Country of Publication: United States
• Language: English

Related Subjects

01 COAL, LIGNITE, AND PEAT
010800* -- Coal
Lignite
& Peat-- Waste Management
42 ENGINEERING
424000 -- Engineering-- Pollution Control Equipment-- (1980-1989)
AEROSOL WASTES
ASHES
BAGHOUSES
BOILERS
CARBONACEOUS MATERIALS
COAL
DATA
DESIGN
ENERGY SOURCES
EQUIPMENT
EXPERIMENTAL DATA
FABRIC FILTERS
FILTERS
FLOW RATE
FLUE GAS
FLUID MECHANICS
FLY ASH
FOSSIL FUELS
FUELS
FUNCTIONAL MODELS
GASEOUS WASTES
INFORMATION
MATERIALS
MECHANICS
NUMERICAL DATA
PARTICLES
PARTICULATES
PILOT PLANTS
POLLUTION CONTROL EQUIPMENT
PRESSURE DROP
RESIDUES
WASTES