JP2002356324A - Apparatus for concentrating sea water - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an effective apparatus for concentrating sea water to mass-produce natural sea salt with low cost by removing a large amount of water content from raw sea water in which salt concentration is approximately only 3%. SOLUTION: As the apparatus has a structure to flow a high temperature combustion gas in a closed space between an outer shell (1) and a rotor (5), the gas is flowed continuously along the rotor (5) without diffusion. Therefore, its energy is transferred effectively to sea water and then the quantity of evaporated water can be drastically increased. As energy cost can be saved to a large extent.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0101]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an apparatus for producing natural sea salt, and more particularly to an apparatus for efficiently evaporating water from seawater having a low salt concentration in advance to concentrate the seawater.

[0092]

2. Description of the Related Art There is a method of guiding seawater to a salt field and naturally evaporating water by the sun, or a method of spraying a vertically suspended net or the like to increase the transpiration area and efficiently use natural energy. I have been.

[0093]

It takes an enormous amount of time to evaporate a large amount of seawater using the energy of the natural world with a low energy density. The present invention intends to effectively evaporate and concentrate water having a large latent heat using artificially produced industrial waste heat or combustible waste material as a heat source.

[0093]

A flame inlet (2) is provided at one end of an outer cylinder (1), and a flue (3) is attached at the other end. A hollow pipe rotor (5) is provided inside the outer cylinder (1) so as to be rotatable. This rotor (5)
Is provided with a gradient so that the seawater poured from one end flows into the saucer (7). A fan (9) for blowing hot air into the rotor (5) is provided on the tray side. Saucer (7)
A concentrated seawater tank (8) for storing the seawater received at
This is again injected into one end of the rotor (5) by the circulation pump (6) and repeated. A heat source (4) is installed below the flame inlet (2) to feed the flame. The sent flame becomes high-temperature combustion gas, passes through the gap between the outer cylinder (1) and the rotor (5), and is exhausted to the outside through the flue (3). At this time, since the outer surface of the rotor is entirely heated as shown in FIG. 2, heat is efficiently exchanged.

[0056]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Seawater injected into a rotor (5) by a circulation pump (6) forms a thin film as shown in FIG. 2 on the entire inner wall thereof as the rotor (5) rotates. become. At this time, since the high temperature combustion gas is in contact with the outer wall of the rotor (5), this heat is transmitted to the inner wall, and vaporization and evaporation of water occur actively. Since a large amount of water vapor is always generated inside the rotor (5), hot air is blown in using the fan (9) and removed to the outside without condensing water. To use combustion gas energy efficiently,
What is necessary is just to make the length of the rotor (5) longer so that the contact time can be kept longer.

[0086]

DESCRIPTION OF THE PREFERRED EMBODIMENTS The seawater circulated by the circulation pump (6) decreases as the water evaporates, so raw water is replenished to the concentrated seawater tank (8) one after another, and a predetermined amount of concentrated seawater is removed. Repeat until you get it.

007

As described above, the combustion gas continues to flow along the rotor in the closed space, so that the thermal efficiency becomes very good, and a large amount of seawater can be concentrated quickly. In addition to waste heat from building formwork veneer, edible waste oil, engine oil, and waste tires, which are discharged as industrial waste, the waste heat from garbage incineration plants can also be used as a heat source, which also serves as environmental purification. And two birds with one stone.

[Brief description of the drawings]

FIG. 1 is a cross-sectional view of the present invention.

FIG. 2 is a front sectional view of the present invention.

[Explanation of symbols]

 1, Outer cylinder 2, Flame inlet 3, Flue 4, Heat source 5, Rotor 6, Circulation pump 7, Receiving tray 8, Concentrated seawater tank 9, Fan

Claims (1)

[Claims] A flame inlet (2) is provided at one end of an outer cylinder (1), and a flue (3) is attached to the other end of the outer cylinder (1).
A hollow pipe rotor (5) is provided in the inside of the vessel so that it can be rotated. The rotor (5) is inclined, seawater is injected from one end, and a saucer (7) is provided on the other end. The circulating pump (6) for injecting the seawater received in step (2) back into the concentrated seawater tank (8) and injecting it again into one end of the rotor (5) is provided, and a fan (9) is provided on the side of the tray (7) of the rotor shaft. And a heat source (4) is provided below the flame inlet. The “seawater concentrator” configured as described above.