KR20150114737A - A hypochlorous acid production system of an offshore structure - Google Patents

A hypochlorous acid production system of an offshore structure Download PDF

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Publication number
KR20150114737A
KR20150114737A KR1020140039302A KR20140039302A KR20150114737A KR 20150114737 A KR20150114737 A KR 20150114737A KR 1020140039302 A KR1020140039302 A KR 1020140039302A KR 20140039302 A KR20140039302 A KR 20140039302A KR 20150114737 A KR20150114737 A KR 20150114737A
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KR
South Korea
Prior art keywords
hypochlorous acid
seawater
water
raw water
offshore structure
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Application number
KR1020140039302A
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Korean (ko)
Inventor
김봉석
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현대중공업 주식회사
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Priority to KR1020140039302A priority Critical patent/KR20150114737A/en
Publication of KR20150114737A publication Critical patent/KR20150114737A/en

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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
    • B63J—AUXILIARIES ON VESSELS
    • B63J1/00—Arrangements of installations for producing fresh water, e.g. by evaporation and condensation of sea water
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F1/00—Treatment of water, waste water, or sewage
    • C02F1/46—Treatment of water, waste water, or sewage by electrochemical methods
    • C02F1/461—Treatment of water, waste water, or sewage by electrochemical methods by electrolysis
    • C02F1/467—Treatment of water, waste water, or sewage by electrochemical methods by electrolysis by electrochemical disinfection; by electrooxydation or by electroreduction
    • C02F1/4672—Treatment of water, waste water, or sewage by electrochemical methods by electrolysis by electrochemical disinfection; by electrooxydation or by electroreduction by electrooxydation
    • C02F1/4674—Treatment of water, waste water, or sewage by electrochemical methods by electrolysis by electrochemical disinfection; by electrooxydation or by electroreduction by electrooxydation with halogen or compound of halogens, e.g. chlorine, bromine
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F2103/00—Nature of the water, waste water, sewage or sludge to be treated
    • C02F2103/08—Seawater, e.g. for desalination
    • C—CHEMISTRY; METALLURGY
    • C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
    • C25B—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES FOR THE PRODUCTION OF COMPOUNDS OR NON-METALS; APPARATUS THEREFOR
    • C25B1/00—Electrolytic production of inorganic compounds or non-metals
    • C25B1/01—Products
    • C25B1/24—Halogens or compounds thereof
    • C25B1/26—Chlorine; Compounds thereof
    • C25B1/265—Chlorates

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  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • Ocean & Marine Engineering (AREA)
  • Water Treatment By Electricity Or Magnetism (AREA)

Abstract

The present invention relates to a system for producing hypochlorous acid in an offshore structure, and more particularly, to a system for producing hypochlorous acid in an offshore structure, and more particularly, to a system for producing hypochlorous acid in an offshore structure, The present invention relates to a hypochlorous acid production system of an offshore structure with enhanced efficiency.
To this end, a desalination apparatus installed in an offshore structure for desalinating and seawater is introduced; A hypochlorous acid treatment device for producing hypochlorous acid through electrolysis by introducing raw water for hypochlorous acid production; and a hypochlorous acid treatment device for electrolyzing the brine water that has been desalinated from the desalination treatment device, The present invention provides a system for producing hypochlorous acid in an offshore structure, which is provided as raw water of an apparatus.

Description

[0001] The present invention relates to a hypochlorous acid production system for an offshore structure,

The present invention relates to a system for producing hypochlorous acid in an offshore structure, and more particularly, to a hypochlorous acid production system in an offshore structure, which improves the efficiency of hypochlorous acid production by supplying the brine water of freshwater treated and remaining seawater as raw water for hypochlorous acid production .

With the rapid development of industries and industries internationally, the use of global resources such as petroleum is gradually increasing, and thus the stable production and supply of crude oil is becoming a very important issue on a global scale.

For this reason, recently marginal field or deep-sea oil development has been economically feasible, which has been neglected due to economic difficulties so far. Therefore, with the development of submarine mining technology, drilling facilities suitable for the development of such oilfields And a drilling facility equipped with this system has been developed.

For example, OFFSHORE FIXED PLATFORM (also called 'offshore platform') is a steel structure 'jacket' and 'deck' [sometimes referred to as 'TOPSIDE'] An ocean structure is a structure that can remain at a point in the sea under any weather conditions without any structure connected with the land.

The offshore structures are classified into jacket type, gravity type, and deck lifting type, and classified into fixed type, semi-submerged type, and floating type depending on the installed depth.

In particular, a jacket type offshore structure is a frame that is fixed to the sea floor by a pile, and is a frame structure composed of a circular cylinder member.

At the upper end of the jacket-type offshore structure, a work site is installed so that a work space can be secured, and a processing facility for drilling work and a residence facility for a worker's living space are mounted on the work site.

On the other hand, since the offshore structure is remote from the land, the water supply system is installed in the offshore structure because the supply of the water is not smooth.

Such a water supply system includes a fresh water generator for producing fresh water with seawater, a desalination device for converting soluble water such as magnesium or calcium salt into purified water produced by the water generator to convert it into water that can be used by humans, Is installed.

At this time, since the water supply system uses seawater, it includes a large number of seawater lines.

At this time, if the management of the seawater piping is neglected, the microorganisms contained in the seawater adhere to the inside of the pipeline, causing a problem of marine growth.

In order to prevent such problems, hypochlorous acid (HClO) is produced using seawater and injected into a seawater pipe, which is produced by electrolysis of seawater.

1 is a schematic view of a hypochlorous acid treatment apparatus for producing hypochlorous acid and includes a pump 20 for supplying seawater introduced into an inlet 10 to an electrolyzer 30 and a seawater pipeline 60, An electrolytic device 30 for electrolyzing the introduced seawater into electrolytic water and supplying the electrolytic water to the gas separator, a power supply device 30a for supplying current to the electrolytic device 30, A gas separator 40 for separating hydrogen gas and hypochlorous acid from the electrolytic water produced in the apparatus 30 and an electrolyte injection pump 50 for injecting the hypochlorous acid concentrate separated from the gas separator 40 into the seawater pipe 60, And a control unit 70 for controlling the driving of each component.

On the other hand, in order to generate hypochlorous acid, as described above, seawater is directly introduced and used. Although the seawater can be directly used, the higher the salinity concentration of the seawater is, the more efficient it is for the production of hypochlorous acid. .

Chlorine is produced from chloride ions in seawater by the following reaction.

Anode: 2Cl-? Cl2 + 2e-

Cathode: 2Na + + 2H2O + 2e-? 2Na + + 2OH- + H2 + 2e-

Hydroxyl ion reacts with sodium ion and chlorine to produce sodium hypochlorite as the following formula.

Cl2 + 2Na + + 2OH? 2NaOcl + H2O

The overall reaction is summarized as follows.

NaCl + H2O - > NAOCl + H2

That is, if NaCl is supplied at a high concentration to produce hypochlorous acid, a high concentration or a high capacity of NaOCl is expected to be produced in comparison with a general sea water supply according to the above reaction formula.

By introducing a high concentration of seawater into the hypochlorous acid treatment apparatus, it is possible to produce high quality sodium hypochlorite, reduce the amount of seawater introduced, and reduce the overall package size of the hypochlorous acid production system.

Of course, it is possible to produce a high concentration of seawater by providing a separate device, but in this case, a high concentration seawater production facility must be provided, which causes an economic burden due to an increase in facility cost.

Therefore, there is a demand for research and development that can produce sea water (NaCl) at a high concentration at a low cost and can be used as raw water for a hypochlorous acid production system.

Korea Registration No. 10-1129619

It is an object of the present invention to provide a seawater desalination apparatus installed in an offshore structure, in which desalination and residual brine water is provided as raw water for producing hypochlorous acid, And to provide a system for producing hypochlorous acid in an offshore structure with enhanced efficiency.

In order to achieve the above object, the present invention provides a desalination apparatus installed in an offshore structure for desalinating and desalinating seawater; A hypochlorous acid treatment device for producing hypochlorous acid through electrolysis by introducing raw water for hypochlorous acid production; and a hypochlorous acid treatment device for electrolyzing the brine water that has been desalinated from the desalination treatment device, The present invention provides a system for producing hypochlorous acid in an offshore structure, which is provided as raw water of an apparatus.

At this time, the desalination apparatus includes a seawater inflow section into which seawater flows, a desalination section that desalinates the inflowed seawater, and a seawater discharge section in which the remaining brine water from the seawater treated seawater is overboarded Wherein the hypochlorous acid treatment apparatus includes a raw water inflow section into which raw water flows and an electrolytic apparatus that produces hypochlorous acid by electrolyzing the raw water, and an electrolytic apparatus is provided between the seawater discharge section and the raw water inflow section, It is preferable that a brine water supply pipe is provided to the raw water inflow portion.

The hypochlorous acid production system of an offshore structure according to the present invention has the following effects.

It is possible to reduce the efficiency of hypochlorous acid production and the size of the hypochlorous acid treatment device by providing the raw water used in the hypochlorous acid treatment device as high-concentration blent water that is desalinated instead of ordinary seawater.

In other words, if high concentration of brine water (NaCl) is supplied instead of general sea water, high concentration or high capacity of NaOCl is expected compared with general sea water supply.

Thus, by introducing high-concentration seawater into the hypochlorous acid treatment apparatus, it is possible to produce high-quality hypochlorous acid and reduce the amount of seawater supplied to the hypochlorous acid treatment apparatus, thereby reducing the size of each component constituting the hypochlorous acid treatment apparatus The entire size of the hypochlorous acid treatment apparatus can be reduced.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a block diagram schematically showing a hypochlorous acid-
2 is a schematic view of a desalination apparatus for an offshore structure
3 is a view illustrating a system for producing hypochlorous acid in an offshore structure according to a preferred embodiment of the present invention.

It is to be understood that the words or words used in the present specification and claims are not to be construed in a conventional or dictionary sense and that the inventor can properly define the concept of a term in order to describe its invention in the best possible way And should be construed in light of the meanings and concepts consistent with the technical idea of the present invention.

Hereinafter, a hypochlorous acid production system for an offshore structure according to a preferred embodiment of the present invention will be described with reference to FIGS. 2 and 3 attached hereto.

The hypochlorous acid production system of the offshore structure has a technical feature in supplying the raw water required for the production of hypochlorous acid, by desalinating the seawater and supplying the remaining brine water to the raw water.

That is, the higher the concentration of seawater, the better the production of hypochlorous acid, and the lower the amount of raw water required for hypochlorous acid production, the higher the efficiency of hypochlorous acid production.

The hypochlorous acid production system of the offshore structure uses a hypochlorous acid treatment device and a desalination treatment device which are already installed in the offshore structure, so there is no need to additionally provide additional production facilities.

The apparatus for treating hypochlorous acid comprises an inlet 10 through which raw water (seawater) flows, and an electrolytic apparatus 30 which produces hypochlorous acid by electrolyzing raw water, do.

Next, the fresh water treatment apparatus 100 is installed in an offshore structure as an apparatus for producing equipment necessary for operation of the marine structure and fresh water required for the life of the crew on board the ship.

The fresh water treatment apparatus 100 is a device for lifting seawater to desalinate and has the same configuration as that of the desalination apparatus 100 of the known technology.

The desalination apparatus 100 includes a seawater inflow section 110, a fresh water treatment section 120, a fresh water discharge section 130, and a seawater discharge section 140 as shown in FIG.

The seawater inflow section 110 is configured to receive raw water for desalination treatment, that is, seawater, and is installed at one side of the seawater desalination apparatus 100.

The fresh water treatment unit 120 is a device for converting the seawater introduced through the seawater inflow unit 110 into fresh water, and the technical structure thereof is not limited thereto.

That is, the fresh water treatment unit 120 may be configured to convert seawater into fresh water.

The fresh water discharge unit 130 is configured to discharge the converted fresh water through the fresh water treatment unit 120 and is installed on the other side of the fresh water treatment apparatus 100.

Fresh water discharged through the fresh water discharge unit 130 is stored in a separate fresh water storage tank (not shown).

The seawater discharge unit 140 is configured to discharge fresh water through the fresh water treatment unit 120 and discharge the remaining seawater, and is installed at one side of the fresh water treatment unit 120.

That is, in the fresh water treatment unit 120, after the seawater is treated with fresh water, saline, that is, brine water having a concentration higher than that of the sea water is generated, and the brine water is discharged to the outside through the seawater discharge unit 130 will be.

However, in the present invention, hypochlorous acid is produced using the brine water, and the brine water supply pipe 200 is installed in the seawater discharge unit 130.

The brine water supply pipe 200 serves to send the brine water produced by the fresh water treatment device 100 to the hypochlorous acid treatment device and the seawater discharge unit 140 of the fresh water treatment device 100 and the hypochlorous acid treatment And is connected between the raw water inlet portion 10 of the apparatus.

That is, the brine water supply pipe 200 serves as a pipe through which the brine water is fed to the raw water inflow part 10.

At this time, it is preferable that a pump 210 is installed in the brine water supply pipe 200 so that the brine water is effectively supplied.

Hereinafter, the operation of the hypochlorous acid production system of the marine structure having the above-described structure will be described.

After the seawater flows into the fresh water treatment apparatus 100, the seawater desalination treatment operation is performed through the fresh water treatment unit 120.

 At this time, in the fresh water treatment unit 120, brine water is produced, and the brine water is discharged through the sea water discharge unit 140.

The brine water discharged through the seawater discharge unit 140 is supplied to the raw water inflow unit 10 of the hypochlorous acid treatment apparatus through the brine water supply pipe 200 rather than overboard.

Thereafter, the brine water flowing through the raw water inflow section 10 is electrolyzed through the electrolytic device 30 and then produced as hypochlorous acid.

At this time, the brine water decomposed in the electrolytic device 30 is raw water having a higher concentration of NaCl than general sea water, so that even if a small amount of brine water is electrolyzed, hypochlorous acid can be effectively produced.

Particularly, since a small amount of raw water can be introduced, it is possible to reduce the size of the apparatus such as the electrolytic apparatus for treating raw water, thereby reducing the size of the entire apparatus, thereby increasing the efficiency of the installation space, And the like.

As described above, the hypochlorous acid production system of an offshore structure according to the present invention has a technical feature that brine water discharged from a desalination apparatus can be used as raw water for producing hypochlorous acid.

Accordingly, due to the characteristic of brine water having a high NaCl concentration, it is possible to effectively produce hypochlorous acid even with a small amount of raw water and to reduce the amount of raw water to be treated, thereby reducing the size of equipment constituting the hypochlorous acid treatment apparatus, .

While the present invention has been particularly shown and described with reference to exemplary embodiments thereof, it is evident that many alternatives, modifications and variations will be apparent to those skilled in the art.

100: Desalination apparatus 110: Seawater inflow section
120: fresh water treatment part 130: fresh water discharge part
140: Seawater discharge part 200: Brine water supply pipe
210: pump

Claims (2)

A desalination device installed in an offshore structure for desalinating seawater;
A hypochlorous acid treatment apparatus for producing hypochlorous acid through electrolysis by introducing raw water for hypochlorous acid production,
Wherein the brine water desalinated from the desalination apparatus is supplied as raw water of a hypochlorous acid treatment apparatus. The method according to claim 1,
The desalination apparatus includes:
A seawater inflow section into which the seawater flows, a desalination section that desalinates the inflowed seawater, and a seawater discharge section where the remaining brine water from the seawater treated seawater is overboarded,
In the hypochlorous acid treatment device,
A raw water inflow section into which raw water flows and an electrolytic apparatus which produces hypochlorous acid by electrolyzing the raw water,
Wherein a brine water supply pipe is provided between the seawater discharge unit and the raw water inflow unit to supply brine water to the raw water inflow unit.
KR1020140039302A 2014-04-02 2014-04-02 A hypochlorous acid production system of an offshore structure KR20150114737A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
KR1020140039302A KR20150114737A (en) 2014-04-02 2014-04-02 A hypochlorous acid production system of an offshore structure

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Application Number Priority Date Filing Date Title
KR1020140039302A KR20150114737A (en) 2014-04-02 2014-04-02 A hypochlorous acid production system of an offshore structure

Publications (1)

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KR20150114737A true KR20150114737A (en) 2015-10-13

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