Increase the flow rate of the medium in the pipeline
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According to the information available, when heating residue in coking heaters, it is necessary to introduce steam at 3.5 MPA into the residue pipeline in order to increase the flow rate of the residue within the pipeline, thereby preventing high-temperature condensation and coking of the residue inside the heater. Why does introducing water vapor increase the flow rate? Is it because the water vapor further vaporizes inside the heating furnace tubes, resulting in an increased amount of vaporization and thus a higher flow rate? Thank you; those who know, please share – it counts as extra points
By introducing steam into the pipeline, the flow velocity of the medium inside the pipe can be increased, making clever use of Bernoulli’s principle. Bernoulli’s theorem states that, at the same cross-section, the kinetic energy of a fluid is in equilibrium with its potential energy and pressure, that is, kinetic energy + potential energy + pressure = constant. Therefore, when water vapor is introduced into the pipeline, its kinetic energy increases while the static pressure decreases (due to the lower density of the water vapor), which precisely counteracts the static pressure of the residue oil. As a result, the kinetic energy of the residue oil in the pipeline increases, and thus its flow velocity also increases. Furthermore, in the high-temperature environment of the heating furnace, water vapor will further vaporize into water and hydrogen, generating a certain gas flow rate that also affects the flow velocity of the residue oil. .
I’m not familiar with this process. It is guessed that without steam, the flow rate of this material in the pipeline would be quite high; by introducing high-speed steam into the pipeline, the solid material can be propelled to move