Regarding the issue of steam condensation
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If the saturated steam pressure is 0.6 MPa, condensate water will be generated after passing through the heat exchanger; what will be the pressure of this condensate water, ignoring pressure losses? I wonder if the pressure remains unchanged and turns into unsaturated water; what should be done next to reduce the pressure. Please give me some advice
There is decades of proven experience, technology, and standards related to the use of steam; those without expertise in this area need to learn more – by finding the right information, things will become clear. As far as I know, the condensed water resulting from steam heating can still produce steam after going through a check valve, as the pressure is reduced
Regardless of whether pressure drop is considered or not, at 0.6 MPAG, a small tank (or a section of vertical thick pipe) can be added after the heat exchanger, followed by a control valve; or a steam trap can be installed directly after the heat exchanger to recover and reuse the condensate. Secondary steam is generated behind the valve, but its quality is very low.
This shouldn’t be difficult; just add a steam trap or a condensate buffer tank
Question: If a flash tank is added, how is the pressure behind the steam trap determined and calculated? With this pressure known, it should be easier to calculate the amount of secondary steam as well
A regular steam trap will do. But we tend to use small tanks, with a control valve added after them; the small tanks provide buffering and help maintain stability. The pressure behind the valve or the trap depends on the pressure of your condensate recovery system, that is, the condensate recovery tank or condensate flash tank. This tank is used to regulate pressure, and the pressure level is determined by the pressure at which the recovered vapor or condensate can be discharged. In any case, the entire condensate recovery process needs to be considered comprehensively.
The pressure of the condensate depends mainly on the back pressure, especially for the condensate that passes through only the hydroseparator, as the hydroseparator allows water to pass through but not steam. If the strainer bypass is also involved in the adjustment, the pressure adjustment range can be controlled by the bypass valve.
As long as it does not exceed the steam pressure, it is fine; the steam trap itself does not have a pressure-reduction function.
As I understand it, the steam pressure before the trap is 0.6 MPa, and the condensed water that passes through the trap can be sent to a height of about 60 meters or more? Ideal state
With the same reasoning, it should be possible to keep it at 0.2 MPa.