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Category > Applied Sciences Posted 30 Apr 2017 My Price 9.00

The largest liquid–liquid

  1. The largest liquid–liquid extraction process is probably the dewaxing of lubricants. After they are separated by distillation, crude lubricant stocks still contain significant quantities of wax. In the past, these waxes were precipitated by cooling and separated by filtration; now, they are extracted with mixed organic solvents. For example, one such process uses a mixture of propane and cresylic acid. You are evaluating a new mixed solvent for dewaxing that has physical processes like those of catechol. You are using a model lubricant with properties characteristic of hydrocarbons. Waxes are 26.3 times more soluble in the extracting solvent than they are in the lubricant. You know from pilot-plant studies that the mass transfer coefficient based on a lubricant-side driving force is

 

K L a ¼ 16,200 lb=ft hr

3

 

What will it be (per second) if the driving force is changed to that on the solvent side?

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IT KING
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Status NEW Posted 30 Apr 2017 07:04 AM My Price 9.00

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