Can the tube bundle of the hydrogen cooler be made of 304 or 304L material?
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Originally, with carbon steel tube bundles, it was necessary to repaint the water side with anti-corrosion coating every time maintenance was carried out. If the tube bundles are upgraded to 304 material, can corrosion of the circulating water be controlled?
Mainly to control the parameters of circulating water!
Stainless steel tube bundles used in the circulating water of water coolers are prone to pitting corrosion. The corrosion of stainless steel in circulating water is relatively complex, and it is related to factors such as the pH value and chloride ions in the water. If there are chloride ions, a slightly alkaline pH value is acceptable. However, the presence of chloride ions results in an acidic pH, which can lead to severe pitting corrosion and, in some cases, stress corrosion. Care must be taken when using stainless steel tube bundles. Additionally, at present, corrosion prevention is still the primary focus for water cooler tubes. Therefore, there are several types of corrosion-resistant materials for water cooler tube bundles, which can be considered for selection.
The corrosion problem on the carbon steel tube bundle on the circulating water side of hydrogen coolers can be resolved by adding a small amount of BF-30A anti-corrosion and scale-inhibiting agent to the circulating water. This agent helps to prevent corrosion and scale formation, chelate and remove existing scale in the circulation system, disperse iron oxide scale, passivate the pipelines in the circulation system, increase the pH value of the circulating water, and provide protection when the equipment is not in use. You can discuss related matters regarding I86OO475386!
It is fine to use 304 or 304L for hydrogen coolers
If the chloride content in the circulating water!
According to clause 3.1.7 of the \"Code for Design of Industrial Circulating Cooling Water\" (GB/T50050-2017), for stainless steel heat exchange equipment, if water flows through the tube side, the chloride ion concentration is allowed to be no more than 1000 mg/L; if water flows through the shell side, this limit is 700 mg/L. Of course, concentration mechanisms may exist in the actual daily production process.