How to clean a spiral plate heat exchanger for ammonium vaporization wastewater?
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The spiral plate heat exchangers used for treating ammonium steam wastewater become clogged due to tar and coke residues; I would appreciate advice from experts on how to clean them
The cleaning method for spiral plate heat exchangers used in ammonium vaporization wastewater treatment is as follows: 1. First, turn off the heat source to release any remaining heat inside the heat exchanger. 2. Remove the top cover of the spiral plate heat exchanger and clean its outer surface using a high-pressure water gun. 3. Clean the interior of the heat exchanger using alkaline solutions of different concentrations, such as 5% sodium hydroxide or 10% sodium triphenylacetate. 4. Pour the cleaning solution into the heat exchanger, and select an appropriate temperature and time to ensure thorough reaction. 5. After cleaning is complete, rinse the heat exchanger with clean water to thoroughly remove all cleaning agents. 6. Install the cover plates and pipes, restart the heat source, and conduct a trial run. Note: During the cleaning process, it is essential to prevent the solution from splashing onto human skin. Additionally, attention must be paid to the quality and concentration of the cleaning solution to avoid environmental pollution. Improper cleaning can shorten the service life of spiral plate heat exchangers, and may even affect their performance. It is recommended to perform regular maintenance on spiral plate heat exchangers and clean them promptly. .