During on-site operation and maintenance, heat exchangers frequently encounter issues such as large fluctuations in medium temperature and frequent scaling, which affect production stability. The following key points are listed from an O&M perspective for daily inspection and operation reference.
Carbon steel jackets are suitable for mineral oil and neutral water, but are not suitable for long-term contact with weakly acidic or weakly alkaline solutions; stainless steel jackets are more durable in corrosive media, but the procurement cost increases accordingly. O&M personnel need to verify the jacket material against the actual medium to avoid corrosion leakage caused by improper selection.
When a fluid medium needs to meet both heating and cooling requirements, ordinary heat exchange equipment is prone to temperature control deviations due to structural limitations. It is recommended to regularly check the medium flow rate and the status of temperature sensors, and to establish a cleaning cycle based on water quality conditions to reduce the impact of scaling on heat exchange efficiency. This model is not suitable for strongly acidic, strongly alkaline, or flammable and explosive environments; if special media are required, a different model must be selected.
Record the inlet and outlet temperatures and pressure difference every shift, and promptly investigate any abnormal fluctuations; check the seals and flange connections for leakage every month; flush or chemically clean the heat exchange surfaces every quarter to maintain heat transfer performance. When shut down for an extended period, drain the internal medium to prevent freezing cracks or corrosion.
