True water generating device

Abstract

To provide a device easily generating fresh water using a generally usable condensing and liquefying means and a cooling means cooling cooling water supplied to the condensing and liquefying means.SOLUTION: A fresh water generation device comprises: a first condenser 2 cooling and liquefying a supplied condensable gas with cooling water; a cooling tower 3 where the cooling water supplied to the first condenser 2 and performed with heat-exchanging is brought into contact with suctioned air, cooled by releasing latent heat and circulated and supplied as the cooling water cooled in the first condenser 2; and a second condenser 4 where air containing moisture discharged from the cooling tower 3 is supplied as the condensable gas and the condensable gas is cooled and liquefied. The cooling water cooled in the cooling tower 3 is also circulated and supplied to the second condenser 4 and distilled water liquefied by the second condenser 4 is generated and extracted as fresh water.SELECTED DRAWING: Figure 1

Description

[Technical field]

[0001] The present invention relates to a fresh water generating device that generates fresh water by utilizing a condensation liquefaction means used in air conditioning equipment, heating and cooling equipment, etc. of a building and a cooling means that cools the cooling water of the condensation liquefaction means. [Background technology]

[0002] Conventionally, the most common method for turning seawater into fresh water is to heat it to evaporate it, then cool it again to turn it into fresh water. Distillation is carried out under reduced pressure to improve thermal efficiency, and a multi-stage flash method combining multiple reduced pressure chambers is used in practical plants (Patent Document 1). Another method is to apply pressure to seawater and pass it through a type of filtration membrane called a reverse osmosis membrane (so-called RO membrane), concentrating and removing salt from the seawater to filter out fresh water. Since RO membranes use high-pressure pumps such as turbine pumps and plunger pumps to apply pressure, various membranes with complex structures called hollow fiber membranes and spiral membranes have been proposed to withstand this pressure (Patent Document 2).

[0003] Conventionally, as described above, fresh water generation devices have been proposed that are primarily intended to convert seawater into fresh water. However, the multi-stage flash method has extremely poor thermal efficiency and requires a large amount of energy. In addition, in a method using an RO membrane, the process is performed while pressurizing the water with a pump, which causes the RO membrane to become clogged. This requires periodic maintenance to either apply reverse pressure to unclog the membrane or to replace the RO membrane as necessary. As a result, the costs of configuring and operating a fresh water generation plant, including maintenance costs, are high, and this inevitably results in high costs in terms of fresh water generation efficiency.

[0004] In order to solve the problems of the conventional methods described above, the applicant has proposed an apparatus that does not require a large amount of thermal energy, can produce fresh water at room temperature, has a simpler configuration, and requires no installation costs, including maintenance costs, and can produce fresh water from sources other than seawater, such as sludge water, oily water, and industrial wastewater (Patent Document 3). [Prior art documents] [Patent documents]

[0005] [Patent Document 1] Japanese Patent Publication No. 10-71320 [Patent Document 2] Patent No. 4113568 [Patent Document 3] Patent No. 6391698 Summary of the Invention [Problem to be solved by the invention]

[0006] However, in order to solve the problems of the conventional method, the fresh water generating device proposed by the applicant also requires a special porous water-absorbing substrate, and the production of the device itself requires a certain cost. In addition, the configuration and installation mode of the device must be considered depending on the liquid to be treated to generate fresh water.

[0007] The applicant has found that in a device for carbonizing and oiling various wastes including general waste, which was proposed separately to solve environmental problems, more effective fresh water can be produced by utilizing a condensation means generally used in water treatment when treating the water generated during carbonization and oiling, and based on this finding, he provides a device for easily producing fresh water. That is, the present invention aims to provide a fresh water production device that can be constructed, for example, using a familiar air conditioning system, by further skillfully combining a condensation liquefaction means that removes latent heat from a substance in the vapor phase and liquefies it, and a cooling means that cools the cooling water for the condensation liquefaction means, which have been conventionally used. [Means for solving the problem]

[0008] In order to solve the above problems, the present invention is configured as follows. That is, the fresh water generating device according to claim 1 of the present invention comprises a first condensation and liquefaction means for cooling and liquefying a supplied condensable gas with cooling water; a cooling means for bringing the cooling water, which has been supplied to the first condensation and liquefaction means and has been subjected to heat exchange, into contact with sucked air to release latent heat and cool the water, and for circulating and supplying the cooled cooling water to the first condensation and liquefaction means; a second condensation and liquefaction means for supplying the water vapor-containing air discharged from the cooling means as a condensable gas and cooling and liquefying the condensable gas, The cooling water cooled by the cooling means is circulated and supplied to the second condensation and liquefaction means, and the distilled water liquefied by the second condensation and liquefaction means is produced and extracted as fresh water.

[0009] The fresh water generating apparatus described in claim 2 is characterized in that the condensable gas supplied to the first condensation and liquefaction means contains oil from waste plastic products that are supplied by pyrolyzing and vaporizing waste garbage in a pyrolysis furnace. Effect of the Invention

[0010] The fresh water generating device according to the present invention is composed of first and second condensation and liquefaction means and a cooling means, and these components are generally used in so-called air conditioning equipment and refrigeration equipment, and are also called condensers or cooling towers. In particular, the present invention provides a second condensation and liquefaction means for further condensing water vapor that has been released into the atmosphere by utilizing heat of evaporation when cooling and circulating the cooling water supplied to the condenser in the cooling tower, thereby enabling fresh water to be generated and extracted.

[0011] In this way, there is no need to design an apparatus using special materials such as the porous water-absorbent substrate previously proposed by the applicant, and the apparatus can be easily constructed based on the components of familiar air conditioners and refrigeration equipment. Therefore, it is possible to provide a fresh water generating apparatus that is also eco-friendly by not wasting the moisture elements that could be turned into fresh water, which would previously have been released into the atmosphere.

[0012] In addition, according to the fresh water generating device described in claim 2, it can be easily installed in conjunction with waste oil production equipment and the like that are different from air conditioning equipment and refrigeration equipment. Therefore, when installing a waste disposal treatment device in order to solve environmental problems on remote islands, etc., it is possible to carry out environmentally friendly waste treatment that is complete on the island and can also produce fresh water, which is of great help in solving environmental problems on remote islands, etc. [Brief description of the drawings]

[0013] [Figure 1] 1 is a schematic diagram showing the schematic configuration of a fresh water generating device according to an embodiment of the present invention; DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0014] Hereinafter, an embodiment of the present invention will be described with reference to the drawings.

[0015] Fig. 1 is a schematic diagram showing the overall configuration of a fresh water generating device 1. In the figure, the part surrounded by a dashed line shows the fresh water generating device 1 according to the present invention. The fresh water generating device 1 is composed of a first condensation and liquefaction means (hereinafter referred to as a condenser) 2 that liquefies a condensable gas supplied from a pyrolysis furnace 5 that thermally decomposes waste containing plastic waste and the like, a cooling means (hereinafter referred to as a cooling tower) 3 that supplies cooling water to the first condenser 2 and cools the cooling water whose temperature has increased after heat exchange in the first condenser 2 by refluxing it, and a second condenser 4 that introduces air containing water vapor discharged from an upper opening of the cooling tower 3 through a communication pipe 7 installed so as to close this opening as a condensable gas, and cools and liquefies it.

[0016] The condensable gas supplied from the pyrolysis furnace 5 contains oil produced by the thermal decomposition of plastic materials, and the oil liquefied in the first condenser 2 is extracted into the oil storage tank 8 through a general catalyst layer 6, so that the pyrolysis furnace 5, catalyst layer 6 and condenser 2 are configured to function as an oil production device.

[0017] An open type cooling tower is basically used for the cooling tower 3, and cooling water is supplied to the condenser 2 from the cooling tower 3, and the cooling water whose temperature has increased after heat exchange in the condenser 2 is returned to the cooling tower 3. In the cooling tower 3, the cooling water is brought into contact with outside air forcibly sent in by a blower (not shown), causing some of the cooling water to evaporate and lower the temperature of the cooling water. The cooled cooling water is supplied again to the condenser 2, and is configured to be circulated between the condenser 2 and the cooling tower 3. The configuration and operation of the condenser 2 and the cooling tower 3 are the same as when they are used in air conditioners and refrigeration equipment.

[0018] As described above, the communication pipe 7 is installed at the upper opening of the open cooling tower 3 so as to close this opening, and one end of the communication pipe 7 is connected to the second condenser 4, and the air containing water vapor discharged from the cooling tower 3 through the conduit 7 is introduced into the second condenser 4 as a condensable gas, and is cooled and liquefied in the condenser 4. The distilled water liquefied in the condenser 4 is extracted into the water tank 9 as fresh water.

[0019] Similar to the condenser 2, cooling water is supplied to the second condenser 4 from the cooling tower 3, and the cooling water whose temperature has increased after heat exchange in the condenser 4 is returned to the cooling tower 3. In the cooling tower 3, similar to the above, the returned cooling water is brought into contact with outside air forcefully blown in by a blower (not shown) to evaporate some of the cooling water, thereby lowering the temperature of the cooling water. The cooling water whose temperature has been lowered is supplied again to the condenser 4, and is circulated between the condenser 4 and the cooling tower 3.

[0020] As described above, the present invention has as its basic components the first condenser 2 used when condensing a condensable gas, and the cooling tower 3 which re-cools the cooling water circulated between the condenser 2 and the cooling tower 3 to remove heat from the cooling water. The water vapor generated when removing heat from the cooling water in the cooling tower 3 is further condensed by the second condenser 4 without being released into the outside air, thereby performing the function of a so-called condenser.

[0021] In the above embodiment, the fresh water generating device 1 is configured as a part of a device that cools and condenses liquefies condensable gas supplied from a pyrolysis furnace 5 that thermally decomposes plastic waste, etc., but even if the condenser 2 and cooling tower 3 function as a condenser or heat exhaust means of an ammonia refrigeration device or chiller, for example, it can be configured similarly to the embodiment device and used as a fresh water generating device. In this way, since it can be easily configured based on the components of familiar air conditioners and refrigeration devices, it can be provided as a fresh water generating device that is also useful as an eco-friendly device by not wasting moisture elements that could be turned into fresh water, which have been conventionally released into the atmosphere.

[0022] If a fresh water generating device can be constructed in this way, it will be possible to utilize the condensers and cooling towers used in air conditioning and refrigeration equipment commonly found in ordinary commercial and residential buildings to obtain distilled water without wasting the exhaust air that would previously have been released into the outside air.Since the device can be constructed and installed without the use of special equipment, it will be useful as an eco-friendly facility, and it will also be able to be effectively used to store and stockpile water for daily use in the building where it is installed, or as emergency water in the event of a disaster, etc. [Industrial Applicability]

[0023] The above-mentioned embodiment device is configured on the premise of a means for liquefying condensable gas supplied from a pyrolysis furnace that thermally decomposes waste containing plastic waste, etc., but by configuring it in this way, it can be easily installed alongside a facility for converting waste plastic waste into oil, etc. When installing a waste disposal treatment device to solve environmental problems on remote islands, it will be possible to carry out waste treatment that is complete and environmentally friendly on the island, where fresh water can also be produced, which will be of great help in solving environmental problems on remote islands, etc. [Explanation of symbols]

[0024] 1 Fresh water generator 2 First Capacitor 3. Cooling Tower 4 Second Capacitor 5 Pyrolysis furnace 6 Catalyst layer 7 Conduit 8 Oil tank 9. Water Tank

Claims

1. a first condensation and liquefaction means for cooling and liquefying a supplied condensable gas with cooling water; a cooling means for introducing the cooling water, the temperature of which has been increased after being supplied to the first condensation and liquefaction means and having been subjected to heat exchange, bringing the cooling water into contact with the sucked outside air to release latent heat and thereby cool the cooling water, and circulating and supplying the cooled cooling water to the first condensation and liquefaction means; a second condensation and liquefaction means for supplying the air containing water vapor discharged from the cooling means as a condensable gas and cooling and liquefying the condensable gas; A fresh water generating apparatus characterized in that the cooling water cooled by the cooling means is circulated and supplied to the second condensation liquefaction means so that the distilled water liquefied by the second condensation liquefaction means is extracted as fresh water.

2. 2. The fresh water generating apparatus according to claim 1, wherein the condensable gas supplied to the first condensation and liquefaction means is a gas phase containing oil, which is supplied by pyrolyzing and vaporizing plastic waste in a pyrolysis furnace.

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