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Hi @George verghese. Thanks for the information. Do you have any papers/methods/calcs available to calculate this pressure drop due to liquid entrainment?

Hi Pierre, Thanks for the support. We are also having similar feelings from our calculations and analyzing the trend given by the client. "To get 2psi max, the flow rate @ customer's site should be less or equal to 1474 m3/h". Also the operating pressure should be more closer or same as what...

@George, I would like to reply to your message on 7th June as separately as below. a) Client hasn't provided any such firm info. We have asked earlier also this info to them and still awaiting the response. b) Impulse lines are taped from centers of the process nozzles and DPIT ( we are using...

Hi George and Pierre. Thanks for the supports and also appreciating continued information/suggestions. We will ask customer as you suggested as well. We have limitation of providing the confidential information such as process datasheets/ P&ID/ PFDs. I could explain the matters further if you...

Hi 1503-44, Thanks for the clarification. Just one more doubt. If we are taking 1421 m3/hr @ Operating pressure of 313 psi.g (327.7 psi.a) and temp of 120C(393K) as the original volumetric flow rate for designing the cyclone bundle, now based on the new Operating pressure (189 psi.g = 203.7...

Hi GeorgeVerghese, Thank you for further valuable remarks. We also had the same concern and informed to client to measure the flow rate before the inlet to the Mist eliminator vessel. Still awaiting that information. Similarly to the water vapor loss in the Compressor, we can expect some...

Hi Georgeverghese, Thanks for the reply and pointing out the corrections. We will further study on this. Answer to your questions as below. a) Are any swirltubes in the swirldeck blanked off deliberately for turndown operations ? : None of the swirltubes are blanked. All are open to the flow...

Hi 1503-44, Thanks for the response. While you calculated the flow rate difference and velocity difference, you have accounted for temperature and pressure already. So are you suggesting that we don't need to consider the reduction in operating pressure separately to arrive at the velocity...

Hi @Georgeverghese, I believe temperature also needs to be considered into the calculations. Original temp was 120 C and current operating is 140C. Should we consider density as inversely proportional to temp and velocity as directly proportional to square root of temperature as well ? This...

Hi Georgeverghese, Great.. That's an amazing explanation. In fact we missed this velocity's inverse proportionality with the pressure. We have considered only the flow rate dependency. We will further study and work based on this. Thanks for the supports.

Hi @pierreick, Thanks for the response. We have pressure transmitter across the inlet and outlet of of this Vessel. Client is measuring the values in the same pressure transmitter which shows higher values than what we have designed. (Eg: Maximum of 1.5 psi as per confirmation from internal...

HI @Georgeverghese, 1,750m3/hr is based on actual condition. Client has given the values as follows. Operating Temperature: 142C Operating Pressure: 189psig Mass Flow Rate: 20486 kg/hr Volumetric Flow Rate: 1753 Am3/hr It seems Client is providing the flow rates based on ideal gas equation...

Hi @LittleInch, Thanks for the response. The flow rates mentioned are all Actual m3/hr not at standard conditions. In fact client is providing these values which we believe they are measuring at a downstream side of this Mist Eliminator vessel, not at the upstream side. Site has minimum and...

Hi Georgeverghese, Thanks for the response. We have consulted with our multicyclone bundle vendor, but they confirmed the maximum pressure drop as 1.5 psi for the operating parameters mentioned. ( That was the maximum permissible diff. pressure we requested them to follow as well.) On the top of...

Hi All, We are supplying Mist Eliminator vessels to our Client with Cyclone bundle internals. The Flow parameters are given below. Flow Rates Max: 1471 m3/hr Normal: 1421 m3/hr Min: 1371 m3/hr Operating Pressures Max: 332 PSI(g) Normal: 323 PSI(g) Min: 313 PSI(g) Operating Temperature...

Hi Caloooomi Thank you so much for reminding me the point that i missed .As per EN 13458-2 the inner vessel must be designed considering various loads,in which MAP with vessel contains gaseous products at 20 Deg C is also required . And more over I find out the client specification for the...

I have seen one of the datasheet for cryogenic vessel which specifying the vessel shall be designed for Allowable temperatures of -196 Deg C as the minimum and -20 deg C as the maximum. I beleive that this implies the vessel can withstand with a lowest temperatue of -196 deg.C and maximum...

I would like to provide more details regarding the design conditions that i was talking about. please see the attached image herewith.

Hi LittleInch I think you said the right thing. The datasheet may be missed the point of ambient temperature. It should have considered somewhere the condition of ambient temperature In the calcs or docs the design person should have considered this one. Eventhough it is safe to use at normal...

Metengr Thank you for quoting and answering my question one by one . The points you mentioned is make sense for me . But i would say the the vessel design doesnt address for the condition of keeping the vessel with ambient temperature. one they started the operation with cryogen with in the...