Hazardous-waste incineration in a rotary kiln
Abstract
A rotary-kiln simulator was used to develop a better understanding of how hazardous materials are removed from sorbent clays. Experimental results and associated numerical modeling on the combustion and desorption of toluene from a montmorillonite clay sorbent are presented. The purpose of these tests was to understand the mass and heat transfer characteristics of the material in a rotary kiln environment. The experiments were done in a batch mode, simulating a control volume of solids moving down the length of a full-scale rotary kiln, exchanging time for distance as the independent variable. Studies investigating the effect of oxygen concentration, charge size, rotational velocity, and kiln cavity temperature on the desorption rate were completed. Also, effects of water in the montmorillonite were examined. Two comprehensive models were developed to predict the thermal and mass desorption characteristics of the bed, respectively. Another series of studies in the rotary kiln simulator was focused on NO, formation from nitrogenous waste constituents. These tests were performed to simulate materials (plastics, nylons, dyes, and process waste) usually destroyed in hazardous-waste incinerators. Four surrogate wastes, Aniline, Pyridine, Malononitrile, and Ethylenediamine, were absorbed onto the montmorillonite clay sorbent. A detailed discussion regarding the design, construction and operation ofmore »
- Authors:
- Publication Date:
- Research Org.:
- Utah Univ., Salt Lake City, UT (United States)
- OSTI Identifier:
- 5016258
- Resource Type:
- Miscellaneous
- Resource Relation:
- Other Information: Thesis (Ph.D.)
- Country of Publication:
- United States
- Language:
- English
- Subject:
- 54 ENVIRONMENTAL SCIENCES; KILNS; DESIGN; NITROGEN OXIDES; SYNTHESIS; TOLUENE; COMBUSTION; DESORPTION; AIR POLLUTION CONTROL; ALGORITHMS; AMINES; ANILINE; DATA ACQUISITION; HEAT TRANSFER; MASS TRANSFER; MATHEMATICAL MODELS; MONTMORILLONITE; NITRILES; PYRIDINES; SIMULATION; ALKYLATED AROMATICS; AROMATICS; AZINES; CHALCOGENIDES; CHEMICAL REACTIONS; CLAYS; CONTROL; ENERGY TRANSFER; HETEROCYCLIC COMPOUNDS; HYDROCARBONS; INORGANIC ION EXCHANGERS; ION EXCHANGE MATERIALS; MATERIALS; MATHEMATICAL LOGIC; NITROGEN COMPOUNDS; ORGANIC COMPOUNDS; ORGANIC NITROGEN COMPOUNDS; OXIDATION; OXIDES; OXYGEN COMPOUNDS; POLLUTION CONTROL; SORPTION; THERMOCHEMICAL PROCESSES; 540120* - Environment, Atmospheric- Chemicals Monitoring & Transport- (1990-)
Citation Formats
Owens, Jr, W D. Hazardous-waste incineration in a rotary kiln. United States: N. p., 1991.
Web.
Owens, Jr, W D. Hazardous-waste incineration in a rotary kiln. United States.
Owens, Jr, W D. 1991.
"Hazardous-waste incineration in a rotary kiln". United States.
@article{osti_5016258,
title = {Hazardous-waste incineration in a rotary kiln},
author = {Owens, Jr, W D},
abstractNote = {A rotary-kiln simulator was used to develop a better understanding of how hazardous materials are removed from sorbent clays. Experimental results and associated numerical modeling on the combustion and desorption of toluene from a montmorillonite clay sorbent are presented. The purpose of these tests was to understand the mass and heat transfer characteristics of the material in a rotary kiln environment. The experiments were done in a batch mode, simulating a control volume of solids moving down the length of a full-scale rotary kiln, exchanging time for distance as the independent variable. Studies investigating the effect of oxygen concentration, charge size, rotational velocity, and kiln cavity temperature on the desorption rate were completed. Also, effects of water in the montmorillonite were examined. Two comprehensive models were developed to predict the thermal and mass desorption characteristics of the bed, respectively. Another series of studies in the rotary kiln simulator was focused on NO, formation from nitrogenous waste constituents. These tests were performed to simulate materials (plastics, nylons, dyes, and process waste) usually destroyed in hazardous-waste incinerators. Four surrogate wastes, Aniline, Pyridine, Malononitrile, and Ethylenediamine, were absorbed onto the montmorillonite clay sorbent. A detailed discussion regarding the design, construction and operation of the rotary-kiln simulator for research on the destruction of hazardous waste materials is presented in the Appendices. All facility calibration techniques and calculations in addition to data acquisition and reduction algorithms are also discussed there.},
doi = {},
url = {https://www.osti.gov/biblio/5016258},
journal = {},
number = ,
volume = ,
place = {United States},
year = {Tue Jan 01 00:00:00 EST 1991},
month = {Tue Jan 01 00:00:00 EST 1991}
}