Can the Same Formula for Activated Carbon Be Used for HCL Limelayer Filtration?

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SUMMARY

The discussion centers on the design of a filtration system for cremation processes, specifically addressing the use of activated carbon and lime for filtering toxic flue gases. Joel, a mechanical engineering intern, seeks to determine if the formula used for activated carbon can also be applied to calculate the necessary parameters for HCl filtration using lime. He successfully identifies the contact time and linear velocity for activated carbon but requires guidance on the equivalent calculations for lime filtration.

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  • Understanding of fixed bed filtration systems
  • Knowledge of chemical reactions involving HCl and lime
  • Familiarity with flow dynamics in filtration processes
  • Basic principles of contact time and linear velocity calculations
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  • Investigate methods for calculating contact time in lime filtration
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Billyjoel
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Dear Sir/Madam,

Im in my final internship for my bachelor mechanical enginering. And i have to design the filter system of a cremation proces. The fluegas is filled with toxic concentrations. Such as mercury, PCDD/PCDF, HCL, NOx

The mercury and dioxine i will filter using activated carbon , fixed bed.

And for the HCL i want to use limelayer. (also fixed bed). I did a lot of research but i can not find out how to calculate the minimum amount i need.

With activated carbon i can use the formule:

contact time (s) = Beddept (m) / Linear velocity (m/s)

Linear velocity = Flow / surface

For activated carbon to filter mercury i need at least 3 sec contact time and a linear velocity between 5 and 40 cm/s.

Now my question: can i use the same formule for the reaction between HCL and lime?
And what is the contact time? linear velocity?

Or can anybody help me where i can find the information on how to calculate with this.

Thanks,

Joel
 
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I suggest you post this in the "Chemistry" forum.
 

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