What are the core structural features of a spiral tube heat exchanger?

A: The core is a combination of spirally wound heat exchange tubes and shell. The tube-side/shell-side medium flows in a spiral state, with a large contact area, stable flow field, and strong anti-fouling ability.

A: It has a high heat transfer coefficient of 30%-50%, a compact size (occupying only 1/3 the space of a shell-and-tube type), is resistant to impact loads, and is suitable for viscous media or fluids containing particles.

A:It is widely used in petrochemical, new energy (LNG/hydrogen), fine chemical, food and pharmaceutical, metallurgy, waste heat recovery and other fields.

A: The standard design pressure is ≤10MPa and the temperature is -196℃~450℃. High temperature and high pressure or cryogenic working condition models can be customized according to requirements.

A: The fixed column can fix the spacing of the spiral plates, improve the overall structural strength of the equipment, and ensure that the fluid is evenly distributed in the channel.

A: A: Medium composition, flow rate, inlet/outlet temperature/pressure, corrosivity, viscosity, and whether it contains particles/fibers (requires matching flow channel design).

A: The standard material is 304/316L stainless steel, while for special working conditions, corrosion-resistant materials such as Hastelloy, titanium alloy, and duplex steel can be selected.

A: Yes! Multi-pass/multi-shell structures can be designed to achieve simultaneous heat exchange of 2-4 media, adapting to complex process requirements.

A: The shell is made using an integral molding process and is equipped with pressure monitoring and temperature alarm devices; the heat exchange tubes and tube sheet are connected by a combination of welding and expansion to eliminate the risk of leakage.

A: Regularly clean shell-side/tube-side impurities (using chemical cleaning or high-pressure flushing); check the aging of seals; monitor heat transfer efficiency and promptly identify and resolve blockages.