Reasons for backflow in the ejector
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We have also encountered backflow issues with the regeneration towers here. The solution was to remove the injector and use steel pieces of the same size as the injector to clean it out, thereby removing all the sulfur from inside the injector; this approach proved to be quite effective.
Reply 1# lpszw: There are still issues with the design of the injector. By \"air gap\" for the injector, it refers to the nozzle diameter; if this diameter is too small, backflow can occur. Using the right material can prevent scaling
This post was last edited by pzhmotor on 2011-10-14 13:21. I don’t entirely agree with the view in the second comment. If there is no backflow at the time of initial operation. If backflow occurs after some time with the pressure of the power source remaining unchanged, it is not due to the selection and design. If the nozzle diameter is designed to be slightly smaller and the pressure head of the power source is sufficient, there will be no backflow during operation; instead, the suction volume will decrease. (Sulfuric acid, hydrochloric acid, and liquid alkali injectors equipped with water treatment systems) ； A gas-solid injector designed for transporting coal powder was in operation when backflow suddenly occurred. Apart from the blockages in the suction chamber, throat, and expansion section mentioned by the original poster, the most likely cause is a blockage in the pipelines at the rear. Poor exhaust flow causes backflow. Problems related to the ontology. External leaks can be detected by the naked eye; the most common problems are nozzle deformation and detachment.
Agree with the view from floor 3. Is there any information available on ejector design?