Estimation of interfacial area in a packed cross-flow cascade with distillation of ethanol-water, methanol-water, and hexane-heptane

Thesis/Dissertation · Tue Dec 31 23:00:00 EST 1985

OSTI ID:6883012

Velaga, A

Packed cross-flow internals consisting of four and ten stages including the samplers for liquid and vapor were fabricated to fit into the existing distillation column. Experiments were conducted using methanol-water, ethanol-water and hexane-heptane binary mixtures. The experimental data were collected for compositions of inlet and exist streams of cross-flow stages. The overall gas phase height transfer units (H/sub og/) were estimated using the experimental data. H/sub og/ values were compared to those of counter current conditions. The individual mass transfer coefficients in the liquid and vapor phases were estimated using the collected experimental data for degree of separation, flow rates and physical properties of the binary system used. The physical properties were estimated at an average temperature of the specific cross-flow stage. The mass transfer coefficients were evaluated using three different correlations proposed by Shulman. Onda and Hayashi respectively. The interfacial areas were estimated using the evaluated mass transfer coefficients and the experimental data at each stage of the column for different runs and compared.

• Research Organization: Arkansas Univ., Fayetteville (USA)
• OSTI ID: 6883012
• Country of Publication: United States
• Language: English

Related Subjects

02 PETROLEUM
020400 -- Petroleum-- Processing
090120* -- Hydrocarbon Fuels-- Preparation-- (1976-1989)
090220 -- Alcohol Fuels-- Preparation-- (1976-1989)
10 SYNTHETIC FUELS
ALCOHOLS
ALKANES
COMPARATIVE EVALUATIONS
DESIGN
DISPERSIONS
DISTILLATION
DISTILLATION EQUIPMENT
EQUIPMENT
ETHANOL
FLOW RATE
HEPTANE
HEXANE
HYDROCARBONS
HYDROGEN COMPOUNDS
HYDROXY COMPOUNDS
MASS TRANSFER
METHANOL
MIXTURES
ORGANIC COMPOUNDS
OXYGEN COMPOUNDS
PHYSICAL PROPERTIES
SEPARATION PROCESSES
WATER