What is the function of a critical nozzle?
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The critical nozzle at the point where the outlet of the four-rotor lift gas pipe connects to the flue gas pipeline! Why is it called a critical nozzle?
This post was last edited by zypan on 2010-5-27 at 12:19. It’s similar to a Venturi tube; it ensures a certain differential pressure, thereby ensuring the proper operation of the three rotors. It is recommended that the original poster read a book titled Questions and Answers on Catalytic Cracking Technology.
The critical nozzle of our device is installed on the flue gas outlet line near the chimney, functioning as a flow-limiting orifice plate. A pressure drop occurs as fluid passes through the orifice plate, and the flow rate through the orifice plate increases as this pressure drop increases. However, when the pressure drop exceeds a certain value, that is, beyond the critical pressure drop, regardless of how much the outlet pressure decreases, the flow rate will remain constant and will not increase any further. The function of the critical nozzle is to control the linear velocity of the flue gas flowing downstream of the three-spinner, in order to ensure the separation efficiency of the three-spinner.
A critical flow nozzle, also known as a critical nozzle, is a converging nozzle installed between two flanges, with its converging end facing downstream; its diameter generally ranges from 50.8 to 102 millimeters. The function of the critical flow velocity nozzle is to control the flow rate of the flue gas flowing downstream through the three-spinning legs, in order to ensure the separation efficiency of the three spinners.