Pickling before equipment activation
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The following are the key points regarding the precautions for acid washing and passivation operations before the new equipment is put into use. I have translated them; please feel free to share your thoughts and suggestions: IMPORTANT: To ensure proper circulation of the citric acid solution within the equipment, it is necessary to verify that the material of the pumps used in these pipelines is suitable for that solution; otherwise, dedicated external pumps must be used for this purpose. Important note: Check that the material of the pumps located in the internal pipelines is appropriate for handling the strong acid solution used in the equipment’s circulation, otherwise external pumps should be employed for such circulation.
Citric Acid refers to \"citric acid\", and \"dedicated\" should be understood as \"specialized for use in this purpose\". The complete translation should be: Important note: It is necessary to verify that the material of the pumps located in the internal pipelines is suitable for handling the citric acid solution used in the internal circulation; otherwise, specialized external pumps should be used for this purpose. The original poster might have misunderstood what “dedicated” means. :lol
Key point: A citric acid solution is circulated inside the equipment to verify that the material of the inline pump is suitable for the solution in use; otherwise, a dedicated external pump must be used to achieve this purpose.
I agree with Bone’s opinion. It is clear here that it is necessary to verify whether the pump used in the equipment can withstand the corrosion caused by the pickling solvents. If the material of the pump can handle this, then a process pump can be used directly as the pump for pickling. Otherwise, if the material of the process pump cannot resist the corrosion of the pickling solution, then that pump must be removed from the pickling circuit, and an external pump must be used to carry out the pickling process. IMPORTANT: For the circulation of the Citric Acid solution inside the equipment, verify that the material of the in-line pumps is suitable for the solution being used; otherwise, dedicated external pumps must be used for this purpose. Important note: Regarding the circulation of the citric acid solution within the equipment, check whether the material of the inline pumps is appropriate for the citric acid used, otherwise specialized external pumps should be employed for circulating this solution. This post was last edited by Guan Yue Cang Shu Lou on 2007-12-8 00:24.]
However, it’s the first time I’ve seen citric acid being used as a pickling solution
The understanding is very precise and the explanation is clear; I completely agree with your view. But I have a simple question: I can never see my score after giving it. I’ve tried many times and refreshed it several times; I’m confused!
Bro, have you given too many points? It exceeds your permission for scoring. :lol