COCURRENT DOWNFLOW OF AIR AND WATER IN A TWO-DIMENSIONAL PACKED-COLUMN

被引：99

作者：

CHRISTENSEN, G ^{[1
]}

MCGOVERN, SJ ^{[1
]}

SUNDARESAN, S ^{[1
]}

机构：

[1] PRINCETON UNIV,DEPT CHEM ENGN,PRINCETON,NJ 08544

来源：

AICHE JOURNAL | 1986年 / 32卷 / 10期

关键词：

AIR - Transport Properties - CHEMICAL EQUIPMENT - Packed Beds - FLOW OF FLUIDS - Ducts - FLUID DYNAMICS;

D O I：

10.1002/aic.690321011

中图分类号：

TQ [化学工业];

学科分类号：

0817 ;

摘要：

Multiple hydrodynamic states were observed during cocurrent downflow of air and water under trickling flow conditions in a packed bed of rectangular cross section. The characteristics of pulsing flow in a packed bed of rectangular cross section were found to be appreciably different from those reported in the literature for flow in small-diameter cylindrical columns. The most significant observation in the packed bed of rectangular cross section was that the pulses did not always span the column cross section, unlike the case in small-diameter columns. The location of the pulses was found to depend on the quality of gas and liquid distribution at the top of the column, and the shape of the top surface of the packing. A distributor configuration in which the gas was injected directly into the bed was found to be the most desirable, and is recommended in industrial practice.

引用

页码：1677 / 1689

页数：13

共 31 条

[1] LIQUID-GAS DISTRIBUTION MEASUREMENTS IN PULSING REGIME OF 2-PHASE CONCURRENT FLOW IN PACKED BEDS [J].

BEIMESCH, WE ;

KESSLER, DP .

AICHE JOURNAL, 1971, 17 (05) :1160-&

[2] HYDRODYNAMIC PROPERTIES OF PULSES IN 2-PHASE DOWNFLOW OPERATED PACKED-COLUMNS [J].

BLOK, JR ;

DRINKENBURG, AAH .

CHEMICAL ENGINEERING JOURNAL AND THE BIOCHEMICAL ENGINEERING JOURNAL, 1982, 25 (01) :89-99

[3] TRANSITION TO PULSING FLOW, HOLDUP AND PRESSURE-DROP IN PACKED-COLUMNS WITH CO-CURRENT GAS-LIQUID DOWNFLOW [J].

BLOK, JR ;

VARKEVISSER, J ;

DRINKENBURG, AAH .

CHEMICAL ENGINEERING SCIENCE, 1983, 38 (05) :687-699

[4] SOME LIQUID HOLDUP EXPERIMENTAL-DATA IN TRICKLE-BED REACTORS FOR FOAMING AND NONFOAMING HYDROCARBONS [J].

CHARPENTIER, JC ;

FAVIER, M .

AICHE JOURNAL, 1975, 21 (06) :1213-1218

[5]

CHARPENTIER JC, 1971, 2ND P C APPL PHYS CH, V2, P31

[6] TRANSITION TO PULSED FLOW IN MIXED-PHASE COCURRENT DOWNFLOW THROUGH A FIXED-BED [J].

CHOU, TS ;

WORLEY, FL ;

LUSS, D .

INDUSTRIAL & ENGINEERING CHEMISTRY PROCESS DESIGN AND DEVELOPMENT, 1977, 16 (03) :424-427

[7] A MODEL FOR PULSING FLOW IN COCURRENT DOWN-FLOW TRICKLE-BED REACTORS [J].

DIMENSTEIN, DM ;

NG, KM .

CHEMICAL ENGINEERING COMMUNICATIONS, 1986, 41 (1-6) :215-235

[8] HYDRODYNAMICS AND SOLID-LIQUID CONTACTING EFFECTIVENESS IN TRICKLE-BED REACTORS [J].

GIANETTO, A ;

BALDI, G ;

SPECCHIA, V ;

SICARDI, S .

AICHE JOURNAL, 1978, 24 (06) :1087-1104

[9] LIQUID DISTRIBUTION IN TRICKLE-BED REACTORS .1. FLOW MEASUREMENTS [J].

HERSKOWITZ, M ;

SMITH, JM .

AICHE JOURNAL, 1978, 24 (03) :439-450

[10]

Kan K. M., 1979, IND ENG CHEM PROC DD, V18, P760

← 1 2 3 4 →