Regarding the cleanliness of pressure vessels
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I would like to ask the experts: are there any minimum requirements regarding the allowable amount of moisture, oil, and other debris inside pressure vessels?
This is related to the materials used inside; generally, pressure vessels for pharmaceutical and food applications are subject to very strict requirements. There are generally no special requirements for large-scale chemical and petrochemical industries. It still depends on the specific operating conditions
The pressure vessels I’m referring to are those used in the natural gas industry; I’m not sure whether the presence of water and oil inside has any impact on the compression of the gas
To ensure the safe operation of pipelines, various countries have established quality standards for the gases that enter these pipelines. These standards generally include specifications regarding hydrogen sulfide, moisture, dew point, and other elements in natural gas； It specifies that the design coefficients for different areas are determined based on the population density index of the regions through which the pipelines pass, and outlines the method for determining the minimum thickness of the pipe walls ； Establish fire safety distances ； It specifies the welding properties, impact toughness, and crack resistance required of the steel used for pipes, and also stipulates that pipes used for transporting natural gas that does not meet quality standards must possess sulfur resistance.
Generally, there are no special requirements; if any such requirements do exist, people will still carry out degreasing before conducting a test drive
It depends on the equipment and the medium involved. If it’s an oxygen pipeline in air separation or pure oxygen as the medium, strict requirements apply; the pipelines are usually of the highest grade GC1, otherwise an explosion can occur easily
It is the pressure vessel located on the compressor; the medium used is natural gas. It seems that after the final processing steps in our company, there is still a small amount of water and oil present
How to get rid of it? The compressors we produce almost all have oil in them.