Impact of heat exchanger layout on pumps
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The coal tar atmospheric and vacuum distillation unit underwent technical upgrades on its own, moving the asphalt heat exchanger, which was previously located on a 3-meter platform, to the ground level. The process generally goes from the bottom of the vacuum tower to this heat exchanger and then to the asphalt pump. Now the pressure drop across the heat exchanger has decreased; it is almost at the same level as the inlet of the asphalt pump, with everything else remaining unchanged. Will this affect the suction port pressure of that asphalt pump?
The heat exchanger serves as an intermediate between the vacuum tower and the suction pump; its location is not below the pump’s suction inlet, so I believe it shouldn’t have any impact!
Moving from a three-meter height to the ground level, I’m not sure if there will be significant changes in the pipeline pressure drop; after all, the pump’s net positive suction head isn’t very high either. It seems that the pipeline pressure drop is also something that needs to be taken into consideration