Seawater desalting device used for ship

Abstract

The invention discloses a seawater desalting device used for a ship, which includes a ship, a machine cabin, a power device cooling water tank, and a smoke exhaust pipe, wherein the ship is provided with an intelligent controller and a water pump. The water pump pumps seawater into a heat absorber in the machine cabin for preheating the seawater. The power device cooling water tank is sealed and is internally provided with conductive fluid and externally provided with an inner circulation pipe. A first heat exchanger is arranged outside the inner circulation pipe. A second heat exchanger and acondenser are arranged outside the smoke exhaust pipe. A desalted water tank is arranged outside the condenser. Water in the heat absorber enters the first heat exchanger via a pipeline for secondaryheating; water in the first heat exchanger enters the second heat exchanger via a pipeline so as to directly evaporate the seawater; the second heat exchanger is provided with a steam outlet pipe anda salt discharge valve, wherein the steam outlet pipe is connected to the condenser and the condenser is connected to the desalted water tank. In the method, the seawater is heated to higher than 100DEG C via a residual heat three-time heating method, so that an object of producing fresh water with vapor is achieved.

Description

technical field [0001] The invention relates to the technical field of seawater desalination, in particular to a seawater desalination device for ships. Background technique [0002] It is currently known that the process of removing salt in seawater to obtain fresh water is called seawater desalination, also known as seawater desalination. The methods of seawater desalination are basically divided into two categories: (1) Fresh water is obtained from seawater, including distillation, reverse osmosis, hydrate, solvent extraction and freezing. (2) To remove the salt in seawater, there are electroosmotic dismantling method, ion exchange method and pressure osmosis method. The first type of method is currently used. As early as the 15th century, some ships used simple distillation devices to solve the problem of fresh water supply for ships during long-term voyages. Since the 1950s, with the development of military and economic and trade in various countries, the large numbe...

AI Technical Summary

Problems solved by technology

Now except for a very small number of large ships equipped with seawater desalination equipment, most ships do not have it. The reason is that the cost of water production is too high, so most ships are equipped with fresh water tanks, and domestic water must be prepared before going to sea. Not only does it take up a lot of space, but the storage capacity is limited, and because the fresh water tank is not easy to clean, it is rarely cleaned, resulting in poor water quality, which not only affects the health of the crew, but also affects combat effectiveness and productivity

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