Well the level system is a bit more complicated than that and the loop is FF but yes my worry is as you said "due to the latent heat stored in the tube bundle metal mass"...how do I calculate that?
I thought the same thing but it seems that we can get a lower turndown by lowering the level of propane (BEM HX) so it still has some control flexibility... still do not know how fast will be the response on a sudden decrease in load.
Yes you are actually right FF is on propane flow TC/PC has a matching condition (not FF as mentioned below with a LL override on the condensate although IMO FF could apply to both assuming there is no load variation). The part you actually got right is the tube side needs to start up slowly and...
I guess it is the same principle as a steam boiler boiler but instead of burner you have steam ass heat input. The heat supply causes evaporation and as a consequence a rise in pressure. The level control is used to change the exposed area to steam by altering condensate level.
Of course there is one... We have a FF control on the condensate level that manages pressure and temperature. The issue I'm worried about is the start up with the condensate side control. How is this usually done. It seems to me like you start up with maximum heat input since you have no level...
There is a fire rated pressure safety valve opening at 35 bar going to safe place plus ESD in case of high pressure (cuts steam, closes condensate pot control valve and activates purge to flare).
That is the usual case with small vaporizers, in this case we have a check valve on the liquid inlet side (and of course a check valve on the pump discharge) and a check valve on the gas outlet. My worry is how fast this thing builds up pressure on start up and how long it takes to adapt to a...
Float air traps are usually used for draining condensation from air receivers. Steam traps are used to remove condensate from steam lines and equipment and their selection is very sensitive to the application. If you have an application can help with selection....
The propane line is delivering gas to a series of turbines. There is no control valve as such, pressure is controlled from the heat transfer rate via altering the surface area of the heat exchanger. Gas is flared until superheat and pressure match turbine conditions.
What I am unsure about is...
It's not freezing that I am afraid of. I am wondering if propane pressure will rise up too fast since there is no temperature control. There is only condensate side control (with level control pot) and I am not sure how the vaporizer will react on start up with no load. The propane must be 25...
I was wondering in anyone has experience with the start up procedure of propane vaporizers. I have an issue with the heat load at start up. The vaporizer is for 25000 kg/hr super-heated propane @ 25 bar. LP steam is used as heat transfer input with condensate side control.
Start up load seems to...
