The problem of air preheater blockage in the alkylated waste acid treatment unit

The blockage of the air preheater in the alkylated waste acid treatment unit is mainly caused by the accumulation of sulfates and carbides. .

The organic compounds in alkylated waste acid have long carbon chains; when burned under low-oxygen conditions, ash is likely to form

And where does all that acidic sludge and sublimed sulfur come from?

Analysis of the air preheater clogging problem in the alkylation waste acid treatment unit 1. Problem description In the alkylation waste acid treatment unit, the air preheater is prone to clogging, which affects the normal operation of the system. 2. Cause of blockage: Sulfate deposition: Sulfates in the waste acid deposit on the surface of the preheater at high temperatures. Particle accumulation: Solid particles in the waste acid accumulate inside the preheater. Corrosion products: Metal oxides resulting from equipment corrosion exacerbate blockages. Improper operation: Inaccurate control of parameters such as temperature and pressure leads to an increase in deposits. 3. Solution: Regular cleaning: Use chemical or mechanical methods to clean the preheater on a regular basis. Filtering system: A filtering device is added before the waste acid enters the preheater to reduce particulates. Material upgrade: Use corrosion-resistant materials to reduce corrosion products. Optimization measures: Strictly control operational parameters to reduce sediment formation. Online monitoring: Install monitoring equipment to keep an eye on blockages in real time and address them promptly. 4. Preventive measures: Regular maintenance: Establish a maintenance plan for regular inspection and cleaning. Employee training: Improve operators’ skills to ensure proper operations. Process improvement: Optimize the waste acid treatment process to reduce the risk of blockages. 5. Conclusion Regular cleaning, optimized operation, and enhanced maintenance can effectively address the problem of air preheater blockage and ensure the stable operation of the equipment

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