Blowing and hot work on alkylated acid hydrocarbon pipelines
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Question: During the shutdown and maintenance of the alkyl sulfate plant, how should the acid-oil pipelines be handled to meet the requirements for working with fire? Generally, it involves material removal, nitrogen purging, alkali washing, water washing, and drying. But what are the precautions for alkali washing, and how should the alkali concentration be controlled?
No alkali washing is required; drying is sufficient after nitrogen purging.
The recovery of liquefied gas and oils from waste acid generates considerable profits each year. QQ1472359555