The acetic acid heating reboiler relies on the thermosiphon effect and evaporation process to achieve the vaporization and distillation separation of acetic acid. In industry, a waste heat recovery system is often integrated to enhance energy efficiency. Titanium material has become an excellent material for manufacturing this reboiler due to its ability to form a stable passivation film in acetic acid, extremely low corrosion rate, excellent heat conductivity, and resistance to high temperature and high pressure, ensuring the long-term stable operation of the equipment.