A CONDUCTIVITY PROBE FOR MEASURING LOCAL SOLIDS CONCENTRATION IN A SLURRY MIXING TANK

被引:20
作者
MACTAGGART, RS [1 ]
NASRELDIN, HA [1 ]
MASLIYAH, JH [1 ]
机构
[1] UNIV ALBERTA,DEPT CHEM ENGN,EDMONTON T6G 2G6,ALBERTA,CANADA
来源
SEPARATIONS TECHNOLOGY | 1993年 / 3卷 / 03期
基金
加拿大自然科学与工程研究理事会;
关键词
CONDUCTIVITY PROBE; MIXING TANK; LOCAL SOLIDS CONCENTRATION; CONCENTRATION MEASUREMENT;
D O I
10.1016/0956-9618(93)80015-J
中图分类号
O65 [分析化学];
学科分类号
070302 ; 081704 ;
摘要
A four-electrode conductivity probe was developed to measure local solids concentrations in slurry mixing tanks. The effects of temperature, ionic strength, velocity, and approaching various boundaries on the sensor voltage were examined in detail. The probe was also tested in a sedimentation vessel and a slurry pipeline. The experimental results indicated that local solids concentrations can be obtained from the sensor voltage using the well-known Maxwell's equation without the need for a calibration curve. However, to obtain a reliable solids concentration measurement, the conductivity of the working fluid should be monitored during the measurements.
引用
收藏
页码:151 / 160
页数:10
相关论文
共 40 条
  • [1] Kipke, Problems in mixing technology, Ger. Chem. Eng., 6, pp. 119-128, (1983)
  • [2] Nienow, The suspension of solid particles, Mixing in the Process Industries, (1985)
  • [3] Smith, Industrial needs for mixing research, Trans. I. Chem. E., 68, pp. 3-6, (1990)
  • [4] MacTaggart, Nasr-El-Din, Masliyah, Sample withdrawal from a slurry mixing tank, Chem. Eng. Sci., 48, pp. 921-931, (1993)
  • [5] Musil, The hydrodynamics of mixed crystallizers, Collection of Czechoslovak Chemical Communications, 41, pp. 839-852, (1976)
  • [6] Bohnet, Niesmak, Distribution of solids in stirred suspensions, Ger. Chem. Eng., 3, pp. 57-65, (1980)
  • [7] Stanley-Wood, Llewellyn, Taylor, Onstream particle size, concentration and velocity measurements by auto-correlation of scattered laser light, Powder Technol., 29, pp. 217-223, (1981)
  • [8] Tojo, Miyanami, Solids suspension in mixing tanks, Ind. Eng. Chem. Fund., 21, pp. 214-220, (1982)
  • [9] Fajner, Magelli, Nocentini, Pasquali, Solids concentration profiles in a mechanically stirred and staged column slurry reactor, Chem. Eng. Res. Des., 63, pp. 235-240, (1985)
  • [10] Yamazaki, Tojo, Miyanami, Concentration profiles of solids suspended in a stirred tank, Powder Technol., 48, pp. 205-216, (1986)