1、1Problem in Extractionedited by Z Liu21 For a high extraction ratio, we should have_. A distribution coefficient 1 B distribution coefficient 1 D selective coefficient 1 2 For a good extraction condition, the solubility of the diluent in the solvent should be _. 3 A single extraction stage can be co

2、nsidered as a combination of a _ and a _.4 According to the solubility nature, a _temperature is good for extraction operation.5 The purpose of multi-stage extraction is for _ and the flow direction can be _ or _.36 The main advantage of a multi-stage cross flow extraction is _; the main disadvantag

3、e is _.7 The phase ratio is defined as _ and a normal operation should be operated at the range of _.8 When a single stage mixing-settling tank extractor is designed, the volume of the settling tank should be about _ times of the mixing tank.9 In a triangle phase diagram, the zone surrounded by the

4、solubility curve is _ phase zone and the extraction should be operated _this zone.10 If a packing tower is used as an extraction tower, the needed height of the packing bed is calculated based on the concept of _.11 Somebody said that the liquid drops of dispersed phase should be as small as possibl

5、e to achieve large mass transfer area. Do you agree?412 When the phase ratio is reduced, the concentration of solute in the extract phase will be _and the driving force of mass transfer is _.13 If a separation of a homogeneous mixture can be done with both a distillation or an extraction, what process do we prefer?14 The main