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

AI Thread Summary
The discussion centers on designing a filter system for cremation flue gas, specifically addressing the filtration of HCl using a limelayer. The user, Joel, seeks to determine if the same formula used for calculating contact time and linear velocity for activated carbon can be applied to the reaction between HCl and lime. He has established parameters for activated carbon, including a required contact time of at least three seconds and a linear velocity of 5 to 40 cm/s. Joel requests assistance in calculating the necessary parameters for the limelayer filtration. The conversation suggests that further expertise may be found in a chemistry-focused forum.
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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