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Title: Kraft black liquor delivery systems

Abstract

Improvement of spray nozzles for black liquor injection into kraft recovery furnaces is expected to result from obtaining a controlled, well-defined droplet size distribution. Work this year has centered on defining the capabilities of commercial black liquor nozzles currently in use. Considerations of the observed mechanism of droplet formation suggest a major revision is needed in the theory of how droplets form from these nozzles. High resolution, high sensitivity video has been shown to be superior to flash x-ray as a technique for measuring the droplet size distribution as well as the formation history. An environmentally sound spray facility capable of spraying black liquor at temperatures up to normal firing conditions is being constructed before data acquisition continues. Preliminary correlations have been developed between liquor properties, nozzle design, and droplet size. Three aspects of nozzle design have been investigated: droplet size distribution, fluid sheet thickness, and flow and pressure drop characteristics. The standard deviation about the median droplet size for black liquor is nearly the same as the for a wide variety of other fluids and nozzle types. Preliminary correlation for fluid sheet thickness on the plate of a splashplate nozzle show the strong similarities of black liquor to othermore » fluids. The flow and pressure drop characteristic of black liquor nozzle, follow a simple two-term relationship similar to other flow devices. This means that in routine mill operation of black liquor nozzles only the fluid acceleration in the nozzle is important, viscous losses are quiet small. 21 refs., 53 figs., 10 tabs.« less

Authors:
; ; ;
Publication Date:
Research Org.:
Institute of Paper Science and Technology, Atlanta, GA (USA). Chemical Recovery Group
Sponsoring Org.:
DOE/CE
OSTI Identifier:
6523033
Report Number(s):
DOE/CE/40839-T2
ON: DE91000891
DOE Contract Number:  
FC02-88CE40839
Resource Type:
Technical Report
Country of Publication:
United States
Language:
English
Subject:
32 ENERGY CONSERVATION, CONSUMPTION, AND UTILIZATION; 09 BIOMASS FUELS; BLACK LIQUIDS; MECHANICAL PROPERTIES; BOILER FUELS; BOILERS; COMBUSTION; DROPLETS; FURNACES; NOZZLES; PAPER INDUSTRY; PROGRESS REPORT; SPRAYS; CHEMICAL REACTIONS; DOCUMENT TYPES; FLUIDS; FUELS; INDUSTRY; LIQUIDS; OXIDATION; PARTICLES; THERMOCHEMICAL PROCESSES; WOOD PRODUCTS INDUSTRY; 320305* - Energy Conservation, Consumption, & Utilization- Industrial & Agricultural Processes- Industrial Waste Management; 092000 - Biomass Fuels- Combustion- (1990-)

Citation Formats

Adams, T N, Empie, H L, Obuskovic, N, and Spielbauer, T M. Kraft black liquor delivery systems. United States: N. p., 1990. Web. doi:10.2172/6523033.
Adams, T N, Empie, H L, Obuskovic, N, & Spielbauer, T M. Kraft black liquor delivery systems. United States. https://doi.org/10.2172/6523033
Adams, T N, Empie, H L, Obuskovic, N, and Spielbauer, T M. 1990. "Kraft black liquor delivery systems". United States. https://doi.org/10.2172/6523033. https://www.osti.gov/servlets/purl/6523033.
@article{osti_6523033,
title = {Kraft black liquor delivery systems},
author = {Adams, T N and Empie, H L and Obuskovic, N and Spielbauer, T M},
abstractNote = {Improvement of spray nozzles for black liquor injection into kraft recovery furnaces is expected to result from obtaining a controlled, well-defined droplet size distribution. Work this year has centered on defining the capabilities of commercial black liquor nozzles currently in use. Considerations of the observed mechanism of droplet formation suggest a major revision is needed in the theory of how droplets form from these nozzles. High resolution, high sensitivity video has been shown to be superior to flash x-ray as a technique for measuring the droplet size distribution as well as the formation history. An environmentally sound spray facility capable of spraying black liquor at temperatures up to normal firing conditions is being constructed before data acquisition continues. Preliminary correlations have been developed between liquor properties, nozzle design, and droplet size. Three aspects of nozzle design have been investigated: droplet size distribution, fluid sheet thickness, and flow and pressure drop characteristics. The standard deviation about the median droplet size for black liquor is nearly the same as the for a wide variety of other fluids and nozzle types. Preliminary correlation for fluid sheet thickness on the plate of a splashplate nozzle show the strong similarities of black liquor to other fluids. The flow and pressure drop characteristic of black liquor nozzle, follow a simple two-term relationship similar to other flow devices. This means that in routine mill operation of black liquor nozzles only the fluid acceleration in the nozzle is important, viscous losses are quiet small. 21 refs., 53 figs., 10 tabs.},
doi = {10.2172/6523033},
url = {https://www.osti.gov/biblio/6523033}, journal = {},
number = ,
volume = ,
place = {United States},
year = {1990},
month = {2}
}