Reactor Pressure Control Design
Reactor Pressure Control Design
(OP)
What is the best method of controlling back pressure on a reactor that contains some absorbed gas in the liquid?
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Reactor Pressure Control Design
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RE: Reactor Pressure Control Design
Good luck,
Latexman
Technically, the glass is always full - 1/2 air and 1/2 water.
RE: Reactor Pressure Control Design
RE: Reactor Pressure Control Design
One way of holding back pressure on a reactor is a simple back pressure regulator. That works if your outflows are only gas and you are not entraining any solids or liquid slugs.
Another way to do it is a control valve and a pressure transducer. The advantage of the control valve is that you can handle more solids or liquids entrainment.
If you have liquid and gas leaving your reactor you may want to set it up so that liquid flows through one control valve and the gas flows through another control valve.
That would make pressure control and sizing of the control valves much easier.
If this is not what you had in mind maybe you could add more details and get better help.
Regards
StoneCold
RE: Reactor Pressure Control Design
RE: Reactor Pressure Control Design
Good luck,
Latexman
Technically, the glass is always full - 1/2 air and 1/2 water.
RE: Reactor Pressure Control Design
If the reactor has a gas headspace, which presumably would be the reason for desiring the pressure, you use a separator and control pressure on the gas and level via throttling liquid on the separator.
It's when you try to send both gas (separate phase) AND liquid out through the same control valve that you have control problems. Don't do it. Dissolved gas that comes out of solution in the trim of the liquid control valve is manageable via correct trim selection and sizing.
RE: Reactor Pressure Control Design
RE: Reactor Pressure Control Design
Good luck,
Latexman
Technically, the glass is always full - 1/2 air and 1/2 water.
RE: Reactor Pressure Control Design
RE: Reactor Pressure Control Design
RE: Reactor Pressure Control Design
Where does the vent go (flare, vapor recovery system, downstream process)?
Is the vapor flowrate measured?
Can an additional flow of gas (or inert) be used as a blanket?
best wishes,
sshep
RE: Reactor Pressure Control Design