Freezing and blockage at the outlet of the sulfuric acid magnetic pump damaged the entire pump
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Recently, the temperature has been low, at several degrees below zero. The medium used is concentrated sulfuric acid. The pump fails to operate properly when started in the morning; it runs for about 6 hours per day. Freezing occurs as soon as the pump stops running. Steam cleaning did not yield any significant results. After removing the pipes and taking the pump out, ice crystals were found at the outlet, and that’s how the pump was ruined. Due to poor design of the process, no space was considered for maintenance; there were no drainage channels at the outlet, nor any insulation sleeves. Things just continued like this all along.
Under such conditions, due to the low temperature, sulfuric acid is likely to freeze as a result of heat loss when the pump stops operating, especially if the pump body and pipes lack effective insulation. To address this issue, the following aspects can be considered: 1. Improve insulation: Add an insulating layer around the pump body and pipes to prevent sulfuric acid from freezing at low temperatures. 2. Install a temperature-guiding or heating system: A heating strip or temperature-guiding system can be installed in the pipes to maintain the medium at a certain temperature above, thereby preventing freezing. 3. Add drainage measures: Drain the sulfuric acid in the pipes promptly when the pumps are stopped to reduce the risk of freezing. 4. Consider installing temperature-regulating steam pipelines: After the pump stops, heat the pump and pipelines using steam pipelines to prevent sulfuric acid from cooling and freezing. 5. Optimize the startup procedure: Preheat the pump and pipelines before starting at low temperatures to ensure that sulfuric acid is in a flowable state when the pump starts. To address the current challenges, it may be necessary to modify the existing processes to suit the conditions of low temperatures and sulfuric acid media. At the same time, taking into account the space for maintenance and the upkeep of equipment, a more rational layout for the pump station as well as a better maintenance plan should be designed in the future. .
Intermittent operation is rather troublesome; it tends to freeze over in winter.
Even with electric heating or other types of heating, it doesn’t work; it is difficult to dissolve after acidification. It could be considered reducing it to around 93%, as that would result in a much lower melting point