The invention discloses a heat-
pipe low-temperature multi-effect sea water desalinating
system which comprises a plurality of groups of heat-
pipe multi-effect evaporators, a steam
injector TVC (Thermal Vapor Compressor), a cooler, an
air water release device, a steam-water separator, a water ring
vacuum pump, a
raw water pump, a
fresh water pump, a
turbine intermediate pressure cylinder and a
turbine low pressure cylinder and also comprises the distribution of steam, product water and strong brine between heat-
pipe multi-effect evaporators. The invention also discloses a process flow of the heat-pipe low-temperature multi-effect sea water desalinating
system, comprising the steps of: extracting steam through the
turbine intermediate pressure cylinder, ejecting circulation steam in the cooler and exhaust steam of the turbine low pressure cylinder through the steam
injector TVC to ensure that the circulation steam and the exhaust steam of the turbine low pressure cylinder are changed into higher-quality steam to enter the heat-pipe evaporators, condensing and releasing heat of the steam at a heat absorption end through a
heat pipe, transferring the heat to heating and atomized sea water at the other end; heating next-stage sea water through taking the heated and vaporized sea water as the heat source of the next multi-effect
evaporator while cooling the heated and vaporized sea water to generate
fresh water; heating the sea water which cools the last-stage steam entering the cooler and exhausting the generated non-condensable gas through the
air water release device; pumping the non-condensable gas of the multi-effect evaporators through the water ring
vacuum pump to ensure that the
system runs in a negative-pressure state; and discharging concentrated water out of the system through a pipeline and pumping the
fresh water to a fresh water tank through a permeated water pump.