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  1. Niq

    commercial PVA membrane

    I think you can also try Bejing Megavision in China. Trust they must be interested to sell their PVA membranes only.
  2. Niq

    manufacturer for cold trap?

    You can try any reasonably good glass scientific equipment supplier. Try HSMartin. Check their website and download their catalogue. Select the suitable cold trap with suitable Dewar Flask for condensation under Liq N2.
  3. Niq

    permeate vapor collection

    You may try with bigger dia Vacuum Condenser (more heat transfer area). And may be one more Condenser in line, preferably after or before Vacuum Pump, could help.
  4. Niq

    Producing Polyaluminium Chloride with aluminium hydroxide

    Hi !! There are two processes to manufacture Polyaluminium Chloride (PAC). The first method is by Gypsum Process, where the raw materials are Al(OH)3, HCl, H2SO4 and CaCO3. This process produces gypsum as a by-product, which is difficult to disposed off. The product is 10% Al2O3 content PAC...
  5. Niq

    LMTD in the presence of noncondensables.

    LMTD calculations for vapors + noncondensable mixtures are not a big deal but determinations of heat co-efficients cetainly are. You are recommended to read Kern's Process Heat Transfer, Chapter 13, section 4 for indepth study. Designing of such heat exchanger is truely an interesting...
  6. Niq

    Engineering Cost Compared to Total Cost

    Well, in addition to plenty of valuable suggestions as given above, I would recommend to consider engineering cost as 10% for smaller projects and 7% for bigger projects. Regards
  7. Niq

    Trichloroisocyanuric acid production

    Hi Well, there is a swiss company, Enco Engineering (www.enco.ch), who offers TCCA technology in cooperation with a polish company. Hope this is of use to you. Though, I would appreciate if your guys kindly inform us other process licensors/technology suppliers of TCCA. Thanx very much. Regards
  8. Niq

    70 % NaOH storage material

    HI SS316 would be the most suitable material for 70% NaOH at ambient temperature. For higher temperatures, Ni is the recommended material. Regards
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