KR100827540B1 - Pure water generator for a ship - Google Patents

Abstract

A pure water generator for a ship is provided to simplify structure of the pure water generator, lower the manufacturing cost of the pure water generator, and supply pure water with high quality. A pure water generator(100) for a ship comprises: a treatment target water inflow pipe(130) for flowing in treatment target water supplied from a fresh water generator(192) or a clean water storage tank for a ship; a pure water discharge pipe(140) for discharging ion-removed treated water to a pure water storage tank(194) of the outside; treatment tanks(110,120) which are vessels having a hollow part formed therein and an ion exchange resin(160) filled in the hollow part, wherein air passages(115) are formed in the vessels to communicate or control air in inner parts of the vessels and air in outer parts of the vessels, and valves(115a) are connected to the air passages; inflow branch pipes(112) of which one ends are connected to the treatment target water inflow pipe, of which the other ends extend to upper parts within the treatment tanks, and which are connected to inflow valves(135) for controlling treatment target water supplied; discharge branch pipes(113) of which one ends are connected to the pure water discharge pipe, of which the other ends extend to lower parts within the treatment tanks, and which are connected to the valves for controlling treatment target water; and filters(114) comprising a plurality of treatment target water discharge holes penetrated into outer peripheral surfaces of bent end portions of the discharge branch pipes that extend to the lower parts within the treatment tanks, and meshes for covering the outer peripheral surfaces of the end portions of the discharge branch pipes. Further, the ion exchange resin is made by mixing a strong acidity cation exchange resin and a strong basic anion exchange resin at a rate of 1:2.

Description

Pure water generator for a ship}

1 is a block diagram of a pure water generating device for ships according to the present invention.

Figure 2 is an enlarged view of the filter provided in the discharge pipe inside the treatment tank of the present invention.

The present invention relates to an apparatus for generating pure water for ships, and more particularly, to an apparatus for generating pure water for ships, which receives fresh water from distilled water or a storage tank supplied from a marine water tanker to produce pure water from which ions are removed.

In recent years, ship transportation has occupied a considerable portion of domestic or international cargo transportation, and in particular, ships are mainly responsible for the transport of chemicals between domestic and international. These chemicals are usually stored and transported on the docks of medium and large cargo ships. After reaching the destination and unloading the cargoes, the docks must be cleaned for shipment of other chemicals. In the past, docks that had been emptied of chemicals were cleaned with methanol and distilled water supplied from land. However, in this case, the price of methanol or distilled water supplied from land is more expensive than water, which is not economical and very harmful to workers. There was a problem. Therefore, recently, the situation is cleaning the dock using distilled water produced in the water tank of the ship itself. However, such distilled water also contains a certain amount of salt, so if a new shipment of methanol, methyl ethyl glycol (MEG) or xylene (xylene) to the dock of a ship cleaned with distilled water adversely affects the purity and quality of chemicals There is a problem that it lowers the value of the raw material product.

The present invention has been developed in view of the above-described conventional problems, and an object of the present invention is to provide a pure water generating apparatus for ships that can supply pure water of high quality while having a simple structure and a low manufacturing cost.

In the present invention for the above-mentioned purposes, the water inlet pipe for introducing the water to be treated supplied from the ship's water tanker or fresh water storage tank, the pure water discharge pipe for discharging the treated water from which the ion is removed to the external pure storage tank, etc. , Is a kind of container having a hollow portion inside the hollow portion is filled with ion exchange resin, the processing tank is provided with an air passage and a valve connected thereto for communicating or intermitting air inside and outside the vessel, one end of the processing tank An inlet pipe connected to a water inlet pipe and the other end extending to an upper end of the inside of the treatment tank and connected to a valve for controlling the water to be treated, one end of which is connected to the pure water discharge pipe and the other end to a lower end of the inside of the treatment tank; The discharge pipe is connected to the valve for the control of the water to be treated and is extended to the lower end of the inside of the treatment tank It comprises a filter consisting of a plurality of treated water discharge hole formed through the outer peripheral surface of the bent end of the branch pipe and a mesh network surrounding the outer peripheral surface of the discharge pipe end, ion exchanged the treated water supplied into the treatment tank Provided is a marine pure water generating device for converting ions to pure water removed by ion exchange.

Here, the ion exchange resin filled in the treatment tank is preferably configured by mixing a strong acid cation exchange resin and a strong base anion exchange resin in a ratio of 1: 2.

The pure water discharge pipe or discharge pipe is preferably connected to a measuring instrument capable of measuring the electrical conductivity or electrical resistance of the treated pure water.

The electrical resistivity of the pure water treated in the marine pure water generating device is preferably in the range of 3.0 ~ 17.6 MΩ.cm.

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Hereinafter, with reference to the accompanying drawings will be described in more detail the configuration and operation principle of the present invention. 1 is a configuration diagram of a pure water generating device for ships according to the present invention, Figure 2 is an enlarged view of the filter provided in the discharge pipe inside the treatment tank of the present invention.

Marine pure water generating device 100 of the present invention is largely removed ions by the ion exchange action in the treated water inlet pipe 130, the treatment tank (110, 120) to be introduced into the water to be treated to be made pure water One end is connected to the first and second treatment tanks 110 and 120 including an ion exchange resin therein, and the other end of the pure water discharge pipe 140 through which the purified water is removed and the like is discharged. Inlet pipe 112 extending to the upper end of the processing tank (110, 120) and one end is connected to the pure water discharge pipe 140 and the other end discharge pipe tube 113 extending to the lower end of the inside of the processing tank (110, 120) It is composed.

In this embodiment, two treatment tanks are configured as first and second treatment tanks, but the number of the treatment tanks 110 and 120 may be increased or decreased as necessary. Hereinafter, the first processing tank 110 will be described. The treated water inlet pipe 130 is to receive the treated water from the water tank 192 or the fresh water storage tank (not shown) in the vessel. In general, a medium-large sized ship is provided with a marine water tank for desalination of seawater. The water tank is a device that desalination of seawater containing a lot of salt to make distilled water having a salt concentration of about 5 ppm. When the treated water inlet pipe 130 is connected to the marine water tank 192, the water to be treated is saline. The concentration will be about 5 ppm distilled water. Alternatively, the treated water inlet pipe 130 may be connected to the fresh water storage tank. In the case of small small ships, fresh water is supplied from the land without using water tanks and used as drinking water in the ship. In this case, fresh water supplied from the fresh water storage tank becomes treated water.

The pure water discharge pipe 140 discharges pure water from which ion such as salt is removed by ion exchange of an ion exchange resin while the water to be treated such as distilled water passes through the treatment tank 110, and the like to the external pure storage tank 194. It is to.

The treatment tank 110 is configured to include a tank body 111 mainly made of metal of a stainless series and an ion exchange resin 160 filled therein to prevent corrosion. As the ion exchange resin 160, a conventional ion exchange resin may be used, and a strong acid cation exchange resin and a strong base anion exchange resin may be mixed in a ratio of about 1: 2. Or it is also possible to use the mixed resin manufactured by mix | blending in said ratio. Inside the treatment tank 110, an inlet pipe 112 for receiving the treated water from the treated water inlet pipe 130 into the treated tank 110 is installed, and the treated pure water discharge pipe ( A discharge pipe 113 for discharging through the 140 is installed. One end of the inlet pipe 112 is connected to the treated water inlet pipe 130 and the other end is located at the upper end of the inside of the treatment tank 110, the inlet valve 135 for intermittent supply of the treated water Is installed. One end of the discharge pipe 113 is connected to the pure water discharge pipe 140 and the other end is located at the lower end of the inside of the treatment tank 110, the discharge valve 145 is installed for the control of the discharged pure water. The treatment tank 110 is provided with an air passage 115 and an air valve 115a to communicate or control the air inside and outside the treatment tank 110. The air passage 115 and the valve 115a may be provided at the upper end of the main body of the treatment tank 110, and preferably mounted on a lid 116 for filling and sealing the ion exchange resin, which will be described later. .

As shown in Figure 2, it is preferable that a filter 114 is formed at one end of the inlet pipe 112 and the discharge pipe 113, the filter 114 has a plurality of discharge holes (113a) on the outer peripheral surface Is formed and is configured to cover the outer surface of the mesh net 113b of a small size. This is to prevent the ion exchange resin 160 from being discharged along the discharge vessel 113 with pure water when the ion exchange resin 160 is mainly used in a spherical shape having a very small diameter. Therefore, the mesh size of the mesh net 113b should be smaller than the diameter of the ion exchange resin 160. Unexplained reference numeral 116 is the lid 116 of the treatment tank 110.

In this embodiment, two treatment tanks are connected in parallel, and when the treatment capacity is large, both tanks may be used. Otherwise, only one tank may be used or alternately used. The net output per unit treatment tank for the condition of treated water obtained as a result of the experiment is as follows.

Experimental condition:

1. Specification of treatment tank: height = 1100 mm, diameter = 270 mm

2. Ion Exchange Resin: TMGT-50

Table 1

Ion Concentration of Treated Water (ppm) Resistance of water to be treated (MΩ.㎝) Processing capacity per unit tank (㎥) 2.5 0.200 1000 5.0 0.100 500 10.0 0.050 250 25.0 0.025 100

In the above table, the electric resistance of the water to be treated is 0.1 MΩ.cm or less, which corresponds to the water to be supplied from a ship water tank 192 or the like, and the salt ion concentration at this time is about 5 ppm or more.

The electrical resistance of the pure water treated in the marine pure water generating device 100 of the present invention is 3.0 MΩ.cm or more, and if the electrical resistance of the discharged pure water is 3.0 MΩ.cm or less, the ion exchange resin in the treatment tank 110. 160 must be replaced. The following table is an experimental result showing the result of treating the water to be treated using the marine pure water generating device 100 of the present invention.

Experimental condition:

1.Salt ion concentration of treated water to be supplied-about 20.0 ppm

TABLE 2

Processing time (minutes) Electric resistivity (MΩ.cm) Pure ion concentration (ppm) Throughput (㎥) 30 17.5 0.029 1.2 60 17.6 0.029 2.4

The experimental results are related to the case where the ion concentration of the treated water to be supplied is about 20.0 ppm, and when distilled water having an ion concentration of about 5 ppm of desalted water is actually supplied to the treated water in the marine water tanker, the discharged water is discharged. The concentration of ions contained in pure water is much lowered, so that it is almost treated with pure ions.

Between the treated water inlet pipe 130 and the pure water discharge pipe 140 is provided with a bypass valve 150 for bypassing the treated water, such as distilled water supplied from the outside to the treatment tank 110 is provided It is preferable. This is particularly to prepare for the case of replacing or repairing the treatment tank 110. That is, when the treatment tank 110 is replaced, the inlet valve 135 and the discharge valve 145 are locked, and the bypass valve 150 is opened to the treated water inlet pipe 130 from the water tank 192. The water to be supplied is directly flowed out through the pure water outlet 140.

The pure water generating device 100 for ships of the present invention is preferably supported by a frame 180 fixed to the bottom of the ship, such as shown. The pure water discharge pipe 140 or the discharge pipe 113 is preferably configured to be connected to the measuring instrument 185 to measure the electrical conductivity or electrical resistance of the pure water discharged. Therefore, when the electrical resistance measured by the measuring instrument is less than a specific required value, for example, about 3.0 MΩ · cm or less, the ion exchange resin 160 of the processing tank 110 is saturated, so that the ion Exchange resin 160 should be replaced.

The pure water generating device 100 for a ship according to the present invention can be designed in a small volume and can be installed in a small or medium-sized vessel or a large ship without burdening a large cost. In the case of small vessels, the present invention may be mainly used to supply water, such as a boiler, because a marine dehydrator, which is a desalination apparatus, is often not provided. In other words, when a general fresh water or the like is used in a pipe such as a boiler, a scale is formed inside the pipe, and the pipe is clogged. When the pure water generated by the present invention is used as the water of the boiler, this problem can be prevented. Will be.

In the case of medium and large ships carrying chemicals such as methanol, methyl ethyl glycol and xylene, the dock or tank for transporting chemicals is usually cleaned with methanol or distilled water, using pure water produced by the present invention. This makes it possible to maintain the purity of new chemicals that are more economical and environmentally friendly than methanol.

According to the pure water generating device for ships of the present invention, the pure water from which ions or various minerals have been removed can be easily used to clean the docks of ships carrying chemicals, etc., thereby maintaining the purity of the chemicals loaded on the docks and the like.

In addition, the pure water generating device for ships of the present invention can replace the fresh water used in various applications such as boilers in the ship with a higher quality pure water, thereby improving the life of the boiler device.

In addition, the pure water generating device for ships of the present invention can be designed by varying the size of the vessel while the structure is simple, and the construction on the ship is also very simple to provide the pure water required in various vessels without adding a large cost. Will be.

Claims (6)

A treatment water inlet pipe for introducing the treatment water supplied from the vessel or fresh water storage tank; A pure water discharge pipe for discharging the treated water from which ions have been removed to an external pure storage tank; A processing tank provided with an air passage and a valve connected thereto for communicating or intermitting air inside and outside the container, the hollow part having a hollow part and filled with ion exchange resin in the hollow part; An inlet pipe connected at one end to the water inlet pipe and the other end extending to an upper end of the inside of the treatment tank and connected to a valve for controlling the water to be treated; An outlet branch pipe having one end connected to the pure water discharge pipe and the other end extending to the lower end of the inside of the treatment tank and connected to a valve for controlling the water to be treated; And It comprises a filter consisting of a mesh network extending to the lower end of the inside of the treatment tank and formed through the outer peripheral surface of the bent end of the discharge pipe and wrap the outer peripheral surface of the discharge pipe tube end, And a pure water generating device for ships for converting the water to be treated supplied into the treatment tank into pure water from which ions are removed by an ion exchange action of an ion exchange resin. The method of claim 1, The pure water generator for ships, characterized in that the ion exchange resin filled in the treatment tank is composed of a strong acid cation exchange resin and a strong base anion exchange resin in a ratio of 1: 2. The method according to claim 1 or 2, The pure water discharge pipe or discharge pipe is a marine pure water generating device, characterized in that connected to the measuring instrument capable of measuring the electrical conductivity or electrical resistance of the treated pure water. The method of claim 3, wherein The electrical resistance of the pure water treated in the marine pure water generating device is a marine pure water generating device, characterized in that in the range 3.0 ~ 17.6 MΩ.cm. delete delete

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