Reboiler steam flow design
Thread Content
This post was last edited by altpage on 2017-1-15 21:12. In the reboiler steam system shown in the diagram, a condensate separation tank is added before the main pipe; the condensate from this main pipe then returns to a large separation tank. What is the reasoning behind this design? What are the advantages and disadvantages?
Usually, steam condensate pipes are equipped with steam traps, but this is the first time I’ve seen it done this way. Waiting for experts to provide an answer.
Simply put, there is steam in the condensate main pipe. There are several possible reasons: 1) The steam pressure fluctuates, causing steam to enter V1425; 2) The outlet pipeline for the uncondensed steam from the reboiler is blocked. Overall, this type of design is still quite rare; I have seen similar ones before in styrene plants, but they were used in front of waste heat boilers
During transportation, the liquid experiences pressure losses; this decrease in pressure leads to the formation of a vapor phase. Therefore, it is necessary to carry out vapor-liquid separation
This condensate tank functions similarly to a steam trap, serving to stabilize the output of the reboiler condensate. Then, the condensate from other reboilers or heat exchangers is collected together in a larger condensate tank and pumped back to the boiler.