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Title: DESIGN OF ATOMIZERS AND BURNERS FOR COAL-WATER SLURRY COMBUSTION

Abstract

A detailed compressible airflow analysis was performed on the central air passage of the triple-concentric atomizer. The results show that a minimum mass flow rate of 0.33 g/s ({approx}16 L/min at STP) of air at a supply pressure of 296 kPa(absolute) is required to create a sonic flow at the atomizer exit, which is 0.97 mm in diameter. This result confirms the hypothesis that previous parametric visualization studies of the spray cone did not have sonic air flow in all cases. Additionally, Phase/Doppler droplet size and velocity measurements were made in sprays of both water and a dilute solution (0.05% wt/wt) of high-molecular weight polyacrylamide. The measurements show small increases in mean drop size when the polymer is added to the liquid, which are nevertheless large compared to the percentage of polymer solute in the solution.

Authors:
; ;
Publication Date:
Research Org.:
Federal Energy Technology Center Morgantown (FETC-MGN), Morgantown, WV (United States); Federal Energy Technology Center Pittsburgh (FETC-PGH), Pittsburgh, PA (United States)
Sponsoring Org.:
US Department of Energy (US)
OSTI Identifier:
781753
Report Number(s):
DE-FG22-95PC95105-12
TRN: AH200123%%420
DOE Contract Number:  
FG22-95PC95105
Resource Type:
Technical Report
Resource Relation:
Other Information: PBD: 1 Oct 1998
Country of Publication:
United States
Language:
English
Subject:
01 COAL, LIGNITE, AND PEAT; FUEL SLURRIES; COAL; WATER; ATOMIZATION; AIR FLOW; BURNERS; COMBUSTION; DESIGN; FLOW RATE; NOZZLES

Citation Formats

Hitron, Rony, Humphrey, William, and Chigier, Norman. DESIGN OF ATOMIZERS AND BURNERS FOR COAL-WATER SLURRY COMBUSTION. United States: N. p., 1998. Web. doi:10.2172/781753.
Hitron, Rony, Humphrey, William, & Chigier, Norman. DESIGN OF ATOMIZERS AND BURNERS FOR COAL-WATER SLURRY COMBUSTION. United States. https://doi.org/10.2172/781753
Hitron, Rony, Humphrey, William, and Chigier, Norman. 1998. "DESIGN OF ATOMIZERS AND BURNERS FOR COAL-WATER SLURRY COMBUSTION". United States. https://doi.org/10.2172/781753. https://www.osti.gov/servlets/purl/781753.
@article{osti_781753,
title = {DESIGN OF ATOMIZERS AND BURNERS FOR COAL-WATER SLURRY COMBUSTION},
author = {Hitron, Rony and Humphrey, William and Chigier, Norman},
abstractNote = {A detailed compressible airflow analysis was performed on the central air passage of the triple-concentric atomizer. The results show that a minimum mass flow rate of 0.33 g/s ({approx}16 L/min at STP) of air at a supply pressure of 296 kPa(absolute) is required to create a sonic flow at the atomizer exit, which is 0.97 mm in diameter. This result confirms the hypothesis that previous parametric visualization studies of the spray cone did not have sonic air flow in all cases. Additionally, Phase/Doppler droplet size and velocity measurements were made in sprays of both water and a dilute solution (0.05% wt/wt) of high-molecular weight polyacrylamide. The measurements show small increases in mean drop size when the polymer is added to the liquid, which are nevertheless large compared to the percentage of polymer solute in the solution.},
doi = {10.2172/781753},
url = {https://www.osti.gov/biblio/781753}, journal = {},
number = ,
volume = ,
place = {United States},
year = {Thu Oct 01 00:00:00 EDT 1998},
month = {Thu Oct 01 00:00:00 EDT 1998}
}