Efficient machine for desalting sea water

Abstract

The invention discloses an efficient machine for desalting sea water. The efficient machine for desalting sea water mainly comprises a sea water desalting device and a water supply tank, wherein the sea water desalting device comprises a high-pressure water chamber, a heat exchange chamber, a pipe sheet, a transversely fluted tube, an sprayer, a heat exchange surface, a film forming device, a baffle and a plurality of heat pipes; and a sewage draining cooling pipe and a desalted water cooling pipe are arranged inside the water supply tank. According to the efficient machine for desalting sea water, the technology of using smoke to release heat on high-speed spraying by an orifice spraying method is adopted, so that the heat transfer coefficient of the device is improved; the technology of using the excess heat of the smoke is preheated on the sea water, so that the smoke is secondarily used in the device, and the energy use ratio of the device is improved; the two-stage preheating technology of the fed material sea water is adopted, so that the temperature of the preheated sea water is raised; and the technology of using the film forming device to form rotary water film at the heat exchange surface of a round table body is adopted, so that the heat transfer effect and the evaporation effect of a water side are effectively improved. Therefore, the efficient machine for desalting sea water has the advantages of high energy use ratio and good heat transfer effect, and is suitable for the demands of places, such as ships, islands and enterprises on middle or small sea water desalting devices.

Description

technical field [0001] The invention belongs to the technical field of seawater desalination, in particular to a high-efficiency seawater desalination machine. Background technique [0002] There are more than 20 existing seawater desalination technologies, among which distillation, reverse osmosis, freezing and electrodialysis are the most commonly used seawater desalination technologies. Distillation is the earliest seawater desalination method, mainly including single-effect distillation, low-temperature multi-effect evaporation, and multi-stage flash evaporation. Compared with other methods, the equipment is simpler, the quality of desalinated water is higher, and different Waste heat and waste heat resources are more economical. At present, small-capacity seawater desalination devices mostly use single-effect distillation devices, while large-capacity seawater desalination devices use low-temperature multi-effect evaporation and multi-stage flash evaporation, which are...

AI Technical Summary

Problems solved by technology

However, the heat transfer method of horizontal tube spraying falling film evaporation currently used in low-temperature evaporation seawater desalination devices not only makes the device compact, but also greatly strengthens the heat and mass transfer process in the system, but the horizontal tube spraying The falling film evaporator still has the disadvantages of low heat transfer efficiency and insufficient effective heat transfer area, resulting in problems such as low energy utilization rate of seawater desalination device and low single-machine water production capacity.

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