THE DISCHARGE OF SOLID LIQUID-MIXTURES FROM HOPPERS

被引:8
|
作者
LAMPTEY, BOM [1 ]
THORPE, RB [1 ]
机构
[1] UNIV CAMBRIDGE,DEPT CHEM ENGN,PEMBROKE ST,CAMBRIDGE CB2 3RA,ENGLAND
关键词
D O I
10.1016/0009-2509(91)85120-M
中图分类号
TQ [化学工业];
学科分类号
0817 ;
摘要
Experiments have been carried out using glass ballotini and diakon spheres in water, to study the flow behaviour of solid-liquid mixtures of high solid fraction from storage vessels such as hoppers. A theoretical model has been developed to predict the discharge rates from hoppers of the solid and the liquid in the mixture. This model is modified from the theory proposed for the discharge of dry powders from hoppers which have been pressurized by a gas. The solid flow rate W was experimentally found to have a similar relationship with the pressure drop DELTA-P to that of the air-assisted flow of dry particulates, i.e. W(2) is proportional to DELTA-P. Good qualitative agreement between the experimental results and the theory has also been obtained. The introduction of a discharge coefficient C(D) in the model enabled a good correlation with the experimental results. The average value of C(D) obtained from the various experiments was found to be about 0.42. This value is disappointingly low which leads to the conclusion that some aspect of the mechanics has not been included in the model. A more practical objective of this work was to understand the factors which affect the production of a consistent homogeneous food product of high particulate content for aseptic packaging.
引用
收藏
页码:2197 / 2212
页数:16
相关论文
共 50 条
  • [1] AN EXPERIMENTAL RIG TO STUDY THE DISCHARGE OF SOLID LIQUID FOOD MIXTURES FROM HOPPERS
    LAMPTEY, BOM
    SMITH, DLO
    FARRENT, JW
    JOURNAL OF AGRICULTURAL ENGINEERING RESEARCH, 1992, 53 (04): : 321 - 327
  • [2] COARSENING IN BINARY SOLID LIQUID-MIXTURES
    VOORHEES, PW
    METALLURGICAL TRANSACTIONS A-PHYSICAL METALLURGY AND MATERIALS SCIENCE, 1990, 21 (01): : 27 - 37
  • [3] SOLID DISTRIBUTION IN BUBBLE COLUMN WITH LIQUID-MIXTURES
    BADGUJAR, MN
    SHAH, YT
    SMITH, DN
    RUETHER, JA
    CHEMICAL ENGINEERING COMMUNICATIONS, 1986, 46 (1-3) : 167 - 178
  • [4] MARANGONI EFFECTS IN THE SPREADING OF LIQUID-MIXTURES ON A SOLID
    PESACH, D
    MARMUR, A
    LANGMUIR, 1987, 3 (04) : 519 - 524
  • [5] MULTILAYER ADSORPTION FROM MULTICOMPONENT LIQUID-MIXTURES ON SOLID-SURFACES
    JARONIEC, M
    OSCIK, J
    DERYLO, A
    MONATSHEFTE FUR CHEMIE, 1981, 112 (02): : 175 - 185
  • [6] THE EFFECTS OF CONVECTION ON OSTWALD RIPENING IN SOLID LIQUID-MIXTURES
    AKAIWA, N
    HARDY, SC
    VOORHEES, PW
    ACTA METALLURGICA ET MATERIALIA, 1991, 39 (11): : 2931 - 2942
  • [7] GENERAL FORMULATION OF ADSORPTION FROM LIQUID-MIXTURES ON HETEROGENEOUS SOLID-SURFACES
    BOROWKO, M
    JARONIEC, M
    REVUE ROUMAINE DE CHIMIE, 1980, 25 (04) : 475 - 486
  • [8] ADSORPTION FROM LIQUID-MIXTURES AND LIQUID-CHROMATOGRAPHY
    RIEDO, F
    KOVATS, ES
    JOURNAL OF CHROMATOGRAPHY, 1982, 239 (APR): : 1 - 28
  • [9] VISCOSITIES OF LIQUID-MIXTURES
    MARSCHALL, E
    WARME UND STOFFUBERTRAGUNG-THERMO AND FLUID DYNAMICS, 1981, 15 (03): : 195 - 200
  • [10] THERMODYNAMICS OF LIQUID-MIXTURES
    MARSH, KN
    PURE AND APPLIED CHEMISTRY, 1983, 55 (03) : 467 - 478