Pseudo-critical temperature of the riser feed nozzle? ? ?
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When addressing the problem of coking above the feed nozzle in the riser, a term called pseudo-critical temperature was mentioned. Could someone give me an accurate definition of it? . . . Thank you all, experts
It must be the temperature required for the feed to be completely vaporized. I would also appreciate it if an expert could provide an answer.
The critical temperature of a pure substance is the highest temperature at which a real gas can be liquefied. For multi-component mixtures such as petroleum, the critical temperature varies depending on their composition; therefore, it must be determined experimentally. When property correlations are used, the critical temperature is often calculated theoretically by means of molecular averaging methods, primarily based on parameters such as the actual critical temperatures of the individual pure components in the mixture and their partial pressures within that mixture. This temperature is known as the pseudo-critical temperature.
Regarding catalytic cracking, what is the pseudo-critical temperature here? Does it fluctuate around the reaction temperature or exist independently? ? ? ?