Heater for the expander alone~~
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Which expert has ever done separate heating of the expander? The air separation unit is in a cold state, so no heating is carried out~~
We use individual heating, and the system is in a cold state
Is it freezing cold inside the tower? ~~Does heating start as soon as the inlet and outlet of the expander are closed? ~~One end is at ultra-low temperature and the other at room temperature – will this have no impact on the pipes or anything?~~
Turning off the valve should work. As for the pipes, expansion valves usually have bellows at their inlet and outlet areas inside the bridge structure
On our side, there are two expanders – one is in operation while the other is stopped. Stop that inlet and outlet valve by closing them completely, then start heating. It has little impact on pipeline valves.
That’s usually how it’s done~~ The fact that I thought of this suddenly is probably also considered unconventional, as it poses some security risks~~ Hehe~~
I’m worried that it will exceed the compensation capacity of the expansion joint~~ Thank you for your help~~ Are you involved in the design of expanders? ~~
It is necessary for the expansion engine to be able to heat independently.
I sometimes have doubts about \"common sense\"~~ hehe~~ I’m just a bit concerned about such differences in opinions~~
The expander already has a heating mode taken into account, so by closing the inlet and outlet valves, heating can proceed normally, I think
Expansion joints are available at both ends of the expander, and the heat resistance range for 304 steel is around -190°C