Ethylene oxidation on supported platinum catalyst in a nonadiabatic fixed-bed reactor; experiments and model

Thesis/Dissertation · Sun Jan 01 04:00:00 EST 1984

OSTI ID:5235135

Dhalewadikar, S V

The steady state and dynamic behavior of a nonadiabatic fixed-bed reactor was experimentally investigated using oxidation of ethylene on Pt/..gamma..-alumina catalyst as a model reacting system. The intrinsic kinetics of the reaction were determined independently in a gradientless spinning basket catalytic reactor. The exit concentration and axial temperature profiles for the fixed-bed reactor were obtained for both the steady state and dynamic operation. Effects of various initial catalyst bed temperatures and feed temperatures were investigated for various flow rates. The transient response to step-changes in various operating conditions such as ethylene concentration in feed, feed temperature and total feed flow rate was also measured. In an attempt to theoretically predict reactor performance, a one-dimensional mathematical model accounting separately for both the gas and the solid catalyst phases, was developed and solved numerically. The continuous model was replaced with a cell-model, incorporating only the transport processes of prime significance. The physical parameters governing reactor performance were estimated by solving the steady state equations and were optimized using the SIMPLEX technique. The theoretical predictions show good agreement with the experimental observations for both the steady state and dynamic operation.

• Research Organization: Notre Dame Univ., IN (USA)
• OSTI ID: 5235135
• Country of Publication: United States
• Language: English

Related Subjects

090110* -- Hydrocarbon Fuels-- Properties-- (1979-1989)
10 SYNTHETIC FUELS
ALKENES
CATALYSTS
CHEMICAL REACTION KINETICS
CHEMICAL REACTIONS
COAL GASIFICATION
ELEMENTS
ETHYLENE
GASIFICATION
HOMOGENEOUS REACTORS
HYDROCARBONS
KINETICS
MATHEMATICAL MODELS
MERC PROCESS
METALS
ORGANIC COMPOUNDS
OXIDATION
PACKED BED
PERFORMANCE
PLATINUM
PLATINUM METALS
REACTION KINETICS
REACTORS
SIMPLEX PROCESS
THERMOCHEMICAL PROCESSES
TRANSITION ELEMENTS