Alkylation and spent acid plant acid pipelines
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With recent significant drops in temperature, it is recommended to strictly control the acid concentration in the relevant acid pipelines and ensure proper heat tracing.
It is necessary to take proper measures for insulation and frost protection, with special attention to pipes and valves
The concentration of concentrated sulfuric acid used in production is crucial for the manufacturing process. For example, 97% concentrated sulfuric acid can be used normally at minus 5 degrees Celsius, while at 98.3%, its viscosity increases significantly between 0 and minus 4 degrees Celsius, which can lead to blockages in the pipelines in severe cases. I wonder if fellow sailors have experienced this.
Our factory stopped operating yesterday because of this
Sulfuric acid pipelines require insulation or heat tracing, as sulfuric acid has a low freezing point; its viscosity increases significantly when the temperature drops below 4 degrees. Waste acid with a concentration of less than 90% has a relatively low freezing point, so insulation is generally not necessary in such cases.
Experts say it will be another cold winter this year; the acid pipelines are fine, but it’s important that the water pipelines don’t freeze
Steam tracing must never be used for waste acid pipelines, as it can cause blockages and crystallization; for new acid as well, steam tracing is not recommended – electric tracing or hot water tracing are the best options
It’s also correct to say that steam tracing really doesn’t work. The advice provided is very practical! Save! ! ! !