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#2
04-07-2007, 08:41 PM
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You shouldn't be getting air, but I wonder if this is a function of running it in FW. Usually you get a little bubble form when first starting up and over time it dissolves into the water or gets blown out the effluent.
Generally speaking you can get a little CO2 bubble form but it is OK for this to pass into the pump intake (it's what you want, actually). I think the Mocalc's are upflow which explains why there isn't a recirc line, a good downflow reactor will have a recirc line just so that the CO2 bubble can get sucked back into the pump intake. For the pump to vapour lock it would take something seriously wrong like a complete blockage.
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-- Tony My next hobby will be flooding my basement while repeatedly banging my head against a brick wall and tearing up $100 bills. Whee! 
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