Mixing and chemical kinetic constraints on PIC production during chlorocarbon combustion
- Massachusetts Inst. of Technology, Cambridge, MA (United States). Dept. of Chemical Engineering
The amount and composition of products of incomplete combustion (PICs) in combustion systems is controlled by the complex interactions of turbulent mixing and chemical kinetics. The current paper addresses this problem by focusing on the effects of incomplete turbulent mixing on the extent of reaction and on the distribution of the local equivalence ratio, and investigating the contributions of chlorocarbon inhibition of chemical reaction to the emission of PICs. The experimental facility has been designed to simulate the conditions in actual incinerator systems; it consists of a Toroidal Jet Stirred Reactor (TJSC) followed by a Plug Flow Reactor (PFR). The experimental conditions allow one to investigate the combined effects of turbulent mixing and chemical kinetic inhibition on PIC emissions. To address these issues methyl chloride is injected into a baseline flow of hot products flowing in the PFR. Instantaneous temperature measurement, obtained by application of a laser Rayleigh scattering diagnostic, and stage species concentrations are then measured at various distances from the point of injection. The temperature probability density functions (pdfs) for fuel-lean and fuel-rich conditions show evidence of mixing constraints. Stable species concentration measurements prove that both mixing and chemical kinetic constraints are present in the PFR environment. Results from a highly simplified turbulent reacting flow model are presented. Species having a strong non-linear dependence on the equivalence ratio can provide insights on the mixing history and might serve as diagnostics of failure modes in incinerators.
- OSTI ID:
- 6826859
- Report Number(s):
- CONF-940711-; CODEN: CBFMAO
- Journal Information:
- Combustion and Flame; (United States), Vol. 99:2; Conference: 25. international symposium on combustion, Irvine, CA (United States), 31 Jul - 5 Aug 1994; ISSN 0010-2180
- Country of Publication:
- United States
- Language:
- English
Similar Records
Analysis and optimization of chlorocarbon incineration through use of a detailed reaction mechanism
Fundamental criteria for the better design of secondary combustion chambers
Related Subjects
COMBUSTION PRODUCTS
CHEMICAL REACTION YIELD
INCINERATORS
TURBULENT FLOW
METHYL CHLORIDE
COMBUSTION KINETICS
CHEMICAL COMPOSITION
FLOW MODELS
FUEL-AIR RATIO
HAZARDOUS MATERIALS
INDUSTRIAL WASTES
WASTE MANAGEMENT
CHEMICAL REACTION KINETICS
CHLORINATED ALIPHATIC HYDROCARBONS
FLUID FLOW
HALOGENATED ALIPHATIC HYDROCARBONS
KINETICS
MANAGEMENT
MATERIALS
MATHEMATICAL MODELS
ORGANIC CHLORINE COMPOUNDS
ORGANIC COMPOUNDS
ORGANIC HALOGEN COMPOUNDS
REACTION KINETICS
WASTES
YIELDS
320305* - Energy Conservation
Consumption
& Utilization- Industrial & Agricultural Processes- Industrial Waste Management