Flow regime transitions in a bubble column with a paraffin wax as the liquid medium

Journal Article · Mon Jun 01 04:00:00 EDT 1987 · Ind. Eng. Chem. Res.; (United States)

DOI:https://doi.org/10.1021/ie00066a007· OSTI ID:5852075

Bukur, D B; Petrovic, D; Daly, J G

Gas hold-up measurements were made in a 0.051-m-diameter by 3.05-m-long glass bubble column with a molten paraffin wax as the liquid medium. For temperatures between 230 and 280/sup 0/C, there is a range of gas velocities where two modes of operation are possible, and they are referred to as the foamy and the turbulent bubbling flow regimes. The start-up velocity determines which flow regime are obtained. Transitions between these two flow regimes occur and are influenced by the temperature (i.e., the liquid viscosity) and the gas distributor design. Lower temperatures and/or perforated plate distributors with larger holes favor the existence of the turbulent bubbling flow regime.

• Research Organization: Dept. of Chemical Engineering, Texas A and M Univ., College Station, TX 77843
• OSTI ID: 5852075
• Journal Information: Ind. Eng. Chem. Res.; (United States), Journal Name: Ind. Eng. Chem. Res.; (United States) Vol. 26:6; ISSN IECRE
• Country of Publication: United States
• Language: English

Related Subjects

37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY
400201* -- Chemical & Physicochemical Properties
ALKANES
APERTURES
BUBBLE GROWTH
BUBBLES
CHEMICAL REACTORS
FLOW RATE
FLUID FLOW
FLUID MECHANICS
FLUIDS
GAS FLOW
HYDROCARBONS
HYDRODYNAMICS
LIQUID FLOW
LIQUIDS
MEASURING METHODS
MECHANICS
MEDIUM TEMPERATURE
OPENINGS
OPERATION
ORGANIC COMPOUNDS
PHASE TRANSFORMATIONS
PLATES
START-UP
TEMPERATURE EFFECTS
TURBULENT FLOW
TWO-PHASE FLOW
VISCOSITY