The separated heat pipe heat exchanger is a new type of heat exchange equipment evolved from the heat pipe heat exchanger, which can be installed separately on the flue, gas pipeline, and combustion air pipeline of the hot blast stove. The arrangement of the tube bundles in a separated heat pipe heat exchanger is generally arranged in a straight row, that is, a rectangular arrangement, which can reduce the heat transfer coefficient (about 30% of a cross row), but the pressure drop of the fluid passing through the heat exchanger will be significantly reduced, and it is also convenient to use a soot blower for dust cleaning.

A separated heat pipe heat exchanger is composed of several high-frequency finned tubes welded together as independent heat pipe bundles. It has good thermal conductivity, and the corresponding tube bundles at the cold and hot ends are connected by steam conduits and reflux conduits to form independent closed pipeline systems.
The separated heat pipe heat exchanger is the development of single tube heat pipe heat exchangers. In a single tube heat pipe heat exchanger, the evaporation section and the condensation section are two parts of one heat pipe, and the heat exchanger is composed of several single tubes. However, the separated heat pipe heat exchanger is different. Its evaporator and condenser sections are no longer composed of separate heat pipe components, but are separated into two parts to form two heat exchangers: evaporator and condenser.