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  1. ChemEng87

    CO2 dissolution in water/Henry's law

    Hi Mates, As a chemical engineer who is not good in chemistry I have a question related to Henry's law. In a closed vessel which contains water at 70% vessel volume, CO2 gas is added to reach a pressure of 90 psig to produce carbonic acid used elsewhere in the process. After carbonic acid is...
  2. ChemEng87

    Filter Press Operating Steps

    ashtree, Thank you for your reply. After extensive research and reading a few technical articles and text books, I was able to find what I was looking for.
  3. ChemEng87

    Filter Press Operating Steps

    Hello Everyone, I have sized a filter press for dewatering slurry coming from a precipitation tank. I have the following operating steps with my filter press: 1) Filtration 2) Air blow (to dry cake) 3) Opening plates and cake dump 4) Plates spray clean 5) Closing plates I need to know the...
  4. ChemEng87

    Carbonation Using Oil/Gas Absorber Tower Reflux Water

    Good Day Everyone, I have a questions about using oil/gas absorber tower reflux water to make carbonic acid. We tried dissolving CO2 in the reflux water using pinpoint carbonator and it did not work quite well. We also considered membrane contactors to dissolve CO2 for this purpose, however due...
  5. ChemEng87

    Metal Removal from Process Wastewater

    bimr, Thank you for your response. I was wondering if you could give me a little more details about the process. For example what type of clarifier to be used and what chemicals to be added? Would a lime softener work in this case? Also isn't TSS too high to be handled with a media filter...
  6. ChemEng87

    Metal Removal from Process Wastewater

    Dear members, I have been given an assignment to design a process for the following water condition and requirements. I don't have much experience in this field so any help about the overall process and equipment required would be highly appreciated. Wastewater to be treated includes: Average...
  7. ChemEng87

    Oil Removal from Water (Filtration Unit Waste Stream)

    bimr, Thank you. May I know why a clarifier is not applicable in this case? I need to give some explanation as why I am not using a clarifier followed by a filter press. Thank you again.
  8. ChemEng87

    Oil Removal from Water (Filtration Unit Waste Stream)

    Hello everyone, I am asked to design a process to remove "suspended solids" and "oil" from the waste stream of a filtration unit. I have been recommended to use a clarifier followed by a filter press to remove suspended solids. First I want to know if this is applicable for that purpose. On...
  9. ChemEng87

    Vacuum Decarbonator Design

    Dear Bimr, Let me disagree with you. For instance there are lots of Heat Exchanger manufacturers out there, while you can find more than sufficient material on step-by-step heat exchanger design. That doesn't throw them out of the business, does it? Well, heat exchanger application in industry...
  10. ChemEng87

    Vacuum Decarbonator Design

    Dear Bimr, The first link you provided is one of the few resources I found already which gives a bit of information about column height, but not other parameters. Your suggestion about calling companies, that's what I am doing currently but I would prefer to come up with a design by myself due...
  11. ChemEng87

    Vacuum Decarbonator Design

    Dear Compositepro, Thank you for your response. I did what you said and what I found was mostly articles investigating CO2 vacuum strippers qualitatively. I was wondering if there is any step-by-step design instruction out there. In other words, the equations describing the column's diameter...
  12. ChemEng87

    Vacuum Decarbonator Design

    Dear StoneCold, Thanks for your response. That's what I have found as well, using Ion Exchange Resins for reducing alkalinity. However the problem is, that's what our customer asked us to do, to design a vacuum decarbonator to reduce alkalinity via removing CO2 from source water. I am not...
  13. ChemEng87

    Vacuum Decarbonator Design

    Hello guys, My manager asked me to provide him with a preliminary design (for now) and a detailed design (later) for a vacuum decarbonator to reduce the total alkalinity of source water. I went through so many industrial and academic references but I couldn't find any material with detailed...
  14. ChemEng87

    Heat exchanger design

    Thanks rakuday, it is not just based on HTC. As you mentioned those other parameters will be considered in choosing the appropriate type of HE but for now, the objective is to have a comparison between heat transfer coefficients while using different types of heat exchangers in the process. I am...
  15. ChemEng87

    Heat exchanger design

    Thanks rmw, the point is I am looking for an instruction to learn how to simulate the process in hysys using different types of heat exchangers cause it will take a lot of time for me to read through hundreds of pages of books to find out the mechanisms governing heat exchangers. Besides the...
  16. ChemEng87

    Heat exchanger design

    Hi guys, In my project, I need to figure out which heat exchanger to be used in a process based on heat transfer coefficient. I have been told to simulate the process in HYSYS using different types of heat exchangers (e.g. shell & tube, plate heat exchangers, double pipe, etc.) to find out...

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