3 replies to this topic

[titim]

Hi, i have to heat a stream (LNG: from 50°C to 290°C at 70 bar) and the heat flof is 0.1141MW, so i must design i new fired heater ( i think the heat flow is very low) or heat exchanger, or other equipement. thank you.

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[Mahdi1980]

titim

 

please clarify what your problem is.

[titim]

hi, i have to design an equipement to heat a stream from 50°c toinlet 290°C with:

inlet Condition:(stream)

- T (C°) =50

- P (bar) = 70

- feed of Gaz: 630 kg/h = 16000 Nm3/j

- Composition of Gaz (% mol): N2=1.78, CO2=1.04, C1=76.46, C2=11.67, C3=6.56, i-C4=0.57, n-C4=1.37, i-C5=0.22, n-C5outle=0.29, C6=0.04

Outlet Conditions :
T (C°) =290

- P (bar) = 65

Must i design a new fired heater or an axchanger or what( i confuse because aof a low heat flow (0.114 MW), and the fired heater in attachement is my supposion of solution

 

[PingPong]

Why do you call this topic "LNG Vaporizer Design" when it seems to be about just heating a gas?

 

In any case, what heating medium you use depends on what is already available at your plant.

 

If you have hot oil of sufficient temperature, you could use that as a heating medium in a heat exchanger.

If you have hot steam of sufficient temperature you could consider using that in two heat exchangers in series: one desuperheating the stream, followed by one condensing the steam. Or, if there is sufficient steam, only one exchanger for only desuperheating that steam.

 

In the absence of any available heating medium you can use a fired heater, if you like.

 

But if the duty is only 114 kW you could simply use an electrical heater.