Analysis of fine coal pneumatic systems
Many fossil fuel energy processes depend on the movement of solids by pneumatic transport. Despite the considerable amount of work reported in the literature on pneumatic transport, the design of new industrial systems for new products continues to rely to a great extent on empiricism. A pilot-scale test facility has been constructed at Pittsburgh Energy Technology Center (PETC) and is equipped with modern sophisticated measuring techniques (such as Pressure Transducers, Auburn Monitors, Micro Motion Mass flowmeters) and an automatic computer-controlled data acquisition system to study the effects of particle pneumatic transport. Pittsburgh Seam and Montana rosebud coals of varying size consist and moisture content were tested in the atmospheric and pressurized coal flow test loops (AP/CFTL and HP/CFTL) at PETC. The system parameters included conveying gas velocity, injector tank pressure, screw conveyor speed, pipe radius, and pipe bends. In the following report, results from the coal flow tests were presented and analyzed. Existing theories and correlations on two-phase flows were reviewed. Experimental data were compared with values calculated from empirically or theoretically derived equations available in the literature, and new correlations were proposed, when applicable, to give a better interpretation of the data and a better understanding of the various flow regimes involved in pneumatic transport. 55 refs., 56 figs., 6 tabs.
- Research Organization:
- USDOE Pittsburgh Energy Technology Center, PA; Pittsburgh Univ., PA (USA). Dept. of Chemical and Petroleum Engineering
- OSTI ID:
- 6916875
- Report Number(s):
- DOE/PETC/TR-87/7; ON: DE87006301
- Resource Relation:
- Other Information: Portions of this document are illegible in microfiche products. Original copy available until stock is exhausted
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
COAL
PNEUMATIC TRANSPORT
TEST FACILITIES
DATA ACQUISITION SYSTEMS
DATA ANALYSIS
FLOWMETERS
PIPES
PITTSBURGH ENERGY TECHNOLOGY CENTER
TWO-PHASE FLOW
VELOCITY
CARBONACEOUS MATERIALS
ENERGY SOURCES
FLUID FLOW
FOSSIL FUELS
FUELS
MATERIALS
MEASURING INSTRUMENTS
METERS
NATIONAL ORGANIZATIONS
TRANSPORT
US DOE
US ORGANIZATIONS
013000* - Coal
Lignite
& Peat- Transport
Handling
& Storage