Anti-corrosion for reactor mixing
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The reaction mixture contains about 30% dilute sulfuric acid, and the reaction temperature is above 120 degrees. Previously, we used PP sheets wrapped around steel to create mixers, but due to high temperatures, the welded areas covered with PP often cracked, leading to corrosion of the steel framework. May I ask what anti-corrosion materials can be used for external coating and wrapping?
The reaction mixture contains about 30% dilute sulfuric acid, the reaction temperature is above 120 degrees, and tetrafluoroethylene is used for stirring
Can furan be used for preservation? How to construct it.
In the past, mixing elements were manufactured using a process in which PTFE (tetrafluoroethylene) strips or films were wrapped around a core and then sintered. However, at the corners of the mixing element, the loose wrapping allowed the material being mixed to penetrate the PTFE layer, resulting in damage to the mixing blade； The current manufacturing process involves spraying ETFE (F40), Halar, or PFA with higher heat resistance onto the impeller as a whole. This emerging technique enables the production of various types of impellers with complex structures, and it also provides improved resistance to permeative corrosion, wear, and extends their service life.
Why not use materials like rubber, but rather modified natural hard rubber, which has a very strong adhesion, is resistant to acids, and can withstand temperatures up to 150°C?