Heat exchanger issue, please come in, sir
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This post was last edited by yibingchun on 2019-12-20 at 16:53. It needs to be replaced immediately; it’s acidic, so copper alloy is used in Guancheng. The problem is that the upper tube sheet suffers severe erosion caused by the vapor phase; moreover, copper alloys are relatively soft and have poor resistance to erosion, so it becomes almost unusable after just two cycles of 6 years each. A solution is needed
Just add an anti-backflow baffle at the vapor port.
Just add an anti-backflow baffle at the vapor port.
Just add an anti-backflow baffle at the vapor port.
Just add an anti-backflow baffle at the vapor port.
I’ve thought about it too – we use this approach with our other heat exchangers as well. But the volume of gas is simply too high, which makes it difficult for the baffle plates to function properly. The space is limited, and copper material is required; moreover, welding quality cannot be guaranteed, and there’s a risk of vortex formation due to the close proximity to the tube sheet
As mentioned in the previous floors, how about trying to add impact guards?
Change the feeding angle at the pipe outlet so that the material enters in a tangential rotation mode; select a downward inclination of 5‰ for the positive direction of rotation.
The only way to do this is by increasing the cross-sectional area of the cooler in order to reduce the flow velocity of the fluid within it. If it is a problem with the inlet flow rate, should a buffer tank be added? For reference.
A shock plate is placed on top of the tube sheet; it has the same pattern of openings as the tube sheet, is about 10–16 mm thick, and is located at a distance of 50–100 mm from the tube sheet (or as determined by the flow area). The arrangement of the openings on this plate is the same as that on the tube sheet, and they are aligned with the openings on the tube sheet. This arrangement helps to guide the airflow and reduces the erosion of the tube sheet