3 replies to this topic

[juche]

Hello Everyone,

 

i want to know what is the maximum differential pressure for which i can design a heat exchange.

When i say differential pressure i mean the difference in pressure of shall side and tube side fluid. 

 

I have a case in which i have one hot liquid hydrocarbon stream which is at 855 psig (Tube side) and a cold Hydrocarbon stream which is at 85 psig (shell side). Can i use these stream for heat exchange.

 

The hot stream is Inlet temp is around 600F and outlet will be around 450 F, Please note Hot Stream may contain H2S but considering the temperature water will be saturated (i.e. no wet H2S).

 

if could use this i will be able to save a "fire heater" which is the only option to heat this cold stream.

 

if your answer is yes i would like to know few references too to justify my opinion.

 

Eagerly waiting for your response.

 

Jutesh 

 

[shan]

The pressure differential is no problem for your case.  You may need a rapture disk on the lower pressure side.

[IGC]

You'll be fine for normal operation, however in the event of a tube rupture you would need to have pressure relief on the shellside in order to avoid damaging the unit ... more.

[juche]

Thanks Shan and IGC,

i feel here is no code restrictions on differential pressure for Heat exchange.

 

Thanks again for your input