Drain pipe of the trap
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A new set of atmospheric evaporation equipment has been added. According to the design provided by the supplier, the steam outlet from the heater should pass through a drain trap before entering the preheater; however, since the preheater and the evaporator are on the same level, the drainage pipe coming out of the drain trap has to rise about 8 meters before it can reach the preheater, which results in backpressure at the drain outlet of the trap. A steam pressure of 0.35 MPa is used. The trap model is: CS41H-16F-DN100. Can it be installed this way? Could it cause issues such as steam effects? Could an expert give some advice? Thank you!
This post was last edited by ylb913 on 2015-9-16 at 10:09. This should be a float-type steam trap; float-type steam traps can tolerate a relatively high back pressure, with the allowable back pressure being no less than 80% of the lowest inlet pressure, so there should be no issue with this back pressure.
The pressure in the preheater needs to be considered comprehensively. You can use a venturi-type hydrostatic valve; the back pressure can reach 98%, and it requires no maintenance or replacement.