WO2020102864A1 - Método para coibição de bioincrustação em ambientes marinhos - Google Patents
Método para coibição de bioincrustação em ambientes marinhosInfo
- Publication number
- WO2020102864A1 WO2020102864A1 PCT/BR2018/050431 BR2018050431W WO2020102864A1 WO 2020102864 A1 WO2020102864 A1 WO 2020102864A1 BR 2018050431 W BR2018050431 W BR 2018050431W WO 2020102864 A1 WO2020102864 A1 WO 2020102864A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- fact
- equipment
- substep
- location
- inspection
- Prior art date
Links
Classifications
-
- C—CHEMISTRY; METALLURGY
- C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
- C23F—NON-MECHANICAL REMOVAL OF METALLIC MATERIAL FROM SURFACE; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL; MULTI-STEP PROCESSES FOR SURFACE TREATMENT OF METALLIC MATERIAL INVOLVING AT LEAST ONE PROCESS PROVIDED FOR IN CLASS C23 AND AT LEAST ONE PROCESS COVERED BY SUBCLASS C21D OR C22F OR CLASS C25
- C23F13/00—Inhibiting corrosion of metals by anodic or cathodic protection
- C23F13/02—Inhibiting corrosion of metals by anodic or cathodic protection cathodic; Selection of conditions, parameters or procedures for cathodic protection, e.g. of electrical conditions
- C23F13/06—Constructional parts, or assemblies of cathodic-protection apparatus
- C23F13/08—Electrodes specially adapted for inhibiting corrosion by cathodic protection; Manufacture thereof; Conducting electric current thereto
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B08—CLEANING
- B08B—CLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL
- B08B17/00—Methods preventing fouling
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
- B63B—SHIPS OR OTHER WATERBORNE VESSELS; EQUIPMENT FOR SHIPPING
- B63B59/00—Hull protection specially adapted for vessels; Cleaning devices specially adapted for vessels
- B63B59/04—Preventing hull fouling
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
- B63B—SHIPS OR OTHER WATERBORNE VESSELS; EQUIPMENT FOR SHIPPING
- B63B59/00—Hull protection specially adapted for vessels; Cleaning devices specially adapted for vessels
- B63B59/06—Cleaning devices for hulls
Definitions
- the present invention falls within the field of technologies to prevent the bio-encrustation of floating equipment in the marine environment and other structures, especially considering the use of electronic devices that assist in the cleaning process.
- Bioincrustation by sessile organisms (Bioincrustation) - such as barnacles, bryozoans, bivalves and the sun coral, problematic invasive species for the off shore industry - demand frequent activity in the naval sector, which is cleaning the hulls of ships and vessels in general, in addition to other structures subject to traffic or anchoring in coastal maritime waters. In addition to vessels, seawater circulation pipes are also subject to similar biological fouling.
- the system includes a current circuit continues to create an electrolytic environment in seawater; said circuit including an adjustable current source, a network electrode having a unique metallic component in order to provide a dimensionally stable network structure - the network electrode being electrically isolated from a surface of a structure submerged in sea water, by minus one corrosion resistant counter electrode having polarity opposite to the mains electrode and disposed away from it, and a switching device configured to switch the mains electrode to (a) continuous operating mode, and (b) temporary depletion mode, wherein the mains electrode is disposed at a distance from the surface of the structure immersed in sea water so that the surface is within an area of influence to increase the pH value of sea water resulting from electrolysis.
- the present invention does not portray an electrochemist.
- the current is conducted simultaneously, cyclically or randomly, from a selected anode electrode, to a variety of cathode electrodes, and the direction and intensity of the low frequency underwater current are controlled to achieve the anti-fouling effect.
- the present invention uses both the layered structure, when conductive, and the water layer adjacent to it as a means to contain randomly variable electric fields, introducing unfavorable disturbances, as such, to the development fouling organisms.
- JP2021888 "ANTI FOULING METHOD" describes an invention that aims to maintain the anti-fouling effect by applying a small current between a conductive coating layer, applied to a body in contact with sea water and an electrode, placed close to the coating layer, so that the potential of the coating layer varies over a specified period.
- a conductive coating layer is provided, provided on the inner surface of a steel tube, and a reference electrode is inserted and fixed in a hole made in the steel tube, so that the tip of the electrode advances slightly in the steel tube.
- the adjacent steel tubes are joined with a flange with an electrode placed between them.
- the electrode and the reference electrodes are connected to a function generator via a potentiostat.
- the sea water is fluid at a flow rate of 0.5 m / s through the tube and a continuous current of 40-100 mA is applied, the potential difference between the coating layer and the reference electrode being controlled in order to vary periodically in the range of 1.2 to 0.6 V.
- a reference electrode for application of the fields. Its efficiency results from the fields being, in amplitude and frequency, random.
- the present invention reveals a process with the objective of inhibiting the beginning of biological activity that results in the unwanted adhesion of organisms.
- the process revealed here is capable of creating environmental disturbances, resulting from electric fields of varying values generated by electronic equipment, and which are proven to be unfavorable to the development of living beings, including microorganisms.
- the present invention relates to a process for preventing bio-encrustation in marine environments, comprising the steps of:
- Step 7) Resizing [013]
- the process disclosed in the present invention allows the creation of electric fields that create environmental disturbances, capable of inhibiting incrustations of sessile organisms inside portions of marine waters under dynamic and / or static conditions, of ships , oil exploration platforms, jetties, etc.
- Figure 1 is a schematic representation of the present invention, in which a flow chart illustrating the steps followed in the process disclosed here is presented.
- the present invention relates to a process for inhibiting bio-encrustation by sessile organisms in marine environments, comprising the steps of:
- Step 7) Resizing.
- the process revealed in the the present invention allows the creation of electric fields that create environmental disturbances, capable of inhibiting incrustations of sessile organisms inside portions of marine waters under dynamic and / or static conditions, of ships, oil exploration platforms, jetties, etc.
- the identification step 1) comprises selecting the target surfaces or bodies.
- This step results from the choice, in a pragmatic way by those responsible for the structure (mole, ship, platform, etc.) of which areas, sectors, or pipes of that structure should be the target of the technique.
- stage 1) is divided into two substeps, which are:
- the impedance measurement of the continent volumes of the clean surfaces is carried out between the desired location for equipment generating the electric fields and the coupling points, inductive or capacitive.
- the impedance measurement is performed between the coupling points by means of multimeters when planning the installation. It is necessary to determine the power that the equipment should provide. This measurement does not need to be constant, in real time, but it may be the subject of further sophistication for future equipment. [027] By the intended location for the equipment, it must be understood that it is according to the operators' discretion, whether in situ or remote.
- Compartmentation is understood as the division of the structure to be protected into blocks to be covered by equipment individually, as a segmentation of areas and / or volumes to be covered by equipment, depending on the structure to be worked.
- Step 5) Coupling [032]
- the coupling (inductive or capacitive) of the available equipment is carried out depending on the compartmentalization, the power of these and the impedances found in order to obtain electrical fields in the order of +0.7 to -0.7 Volt / meter, and may vary depending on the dimensions of the structure to be worked.
- the target surfaces are defined according to the characteristic of the structure to be worked
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Combustion & Propulsion (AREA)
- Ocean & Marine Engineering (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Catching Or Destruction (AREA)
- Water Treatment By Electricity Or Magnetism (AREA)
Abstract
Description
Claims
Priority Applications (7)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP18941050.9A EP3889033A1 (en) | 2018-11-22 | 2018-11-22 | Method for restricting bio-fouling in marine environments |
BR112020016210-8A BR112020016210A2 (pt) | 2018-11-22 | 2018-11-22 | método para coibição de bioincrustração em ambientes marinhos |
KR1020217018747A KR20210093981A (ko) | 2018-11-22 | 2018-11-22 | 해양 환경에서의 생물 오손 제한을 위한 방법 |
PCT/BR2018/050431 WO2020102864A1 (pt) | 2018-11-22 | 2018-11-22 | Método para coibição de bioincrustação em ambientes marinhos |
US17/296,474 US20210395900A1 (en) | 2018-11-22 | 2018-11-22 | Process for biofouling cohibition in marine environments |
CN201880100630.2A CN113631476A (zh) | 2018-11-22 | 2018-11-22 | 防止海洋环境中生物积垢的方法 |
JP2021529134A JP2022509165A (ja) | 2018-11-22 | 2018-11-22 | 海洋環境における生物付着妨害のためのプロセス |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
PCT/BR2018/050431 WO2020102864A1 (pt) | 2018-11-22 | 2018-11-22 | Método para coibição de bioincrustação em ambientes marinhos |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2020102864A1 true WO2020102864A1 (pt) | 2020-05-28 |
Family
ID=70773023
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/BR2018/050431 WO2020102864A1 (pt) | 2018-11-22 | 2018-11-22 | Método para coibição de bioincrustação em ambientes marinhos |
Country Status (7)
Country | Link |
---|---|
US (1) | US20210395900A1 (pt) |
EP (1) | EP3889033A1 (pt) |
JP (1) | JP2022509165A (pt) |
KR (1) | KR20210093981A (pt) |
CN (1) | CN113631476A (pt) |
BR (1) | BR112020016210A2 (pt) |
WO (1) | WO2020102864A1 (pt) |
Citations (8)
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US5143011A (en) | 1991-02-05 | 1992-09-01 | Stephen Rabbette | Method and apparatus for inhibiting barnacle growth on boats |
BR9106460A (pt) * | 1990-05-15 | 1993-05-18 | Marine Environmetal Research I | Processo e aparelho para a prevencao de incrustacoes e/ou corrosao de estruturas em agua do mar,agua saloubra e/ou agua doce |
BR0010351A (pt) * | 1999-05-07 | 2002-01-08 | Dennis Mason | Método e aparelho para remover organismos marinhos de um substrato submerso |
JP2007055568A (ja) | 2005-08-25 | 2007-03-08 | Ichimon Kiko Kk | 低周波電流式船底防汚システム |
US20110100804A1 (en) | 2009-10-30 | 2011-05-05 | Stiftung Alfred-Wegener-Institut Fuer Polar- Und Meeresforschung | Electrochemical antifouling system for seawater-wetted structures |
BRPI0710754A2 (pt) * | 2006-04-26 | 2011-06-14 | Shell Int Research | mÉtodo para usar um sistema de proteÇço catàdica de corrente impressa |
BR102014008965A2 (pt) * | 2014-04-14 | 2016-05-17 | Diogo Mitsuo Oliveira Ogawa | sistema de emissão de corrente elétrica modulada para indução, controle e supressão de crescimento biológico na forma de biofouling e células planctônicas |
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2018
- 2018-11-22 KR KR1020217018747A patent/KR20210093981A/ko unknown
- 2018-11-22 CN CN201880100630.2A patent/CN113631476A/zh active Pending
- 2018-11-22 US US17/296,474 patent/US20210395900A1/en not_active Abandoned
- 2018-11-22 JP JP2021529134A patent/JP2022509165A/ja active Pending
- 2018-11-22 EP EP18941050.9A patent/EP3889033A1/en not_active Withdrawn
- 2018-11-22 BR BR112020016210-8A patent/BR112020016210A2/pt not_active Application Discontinuation
- 2018-11-22 WO PCT/BR2018/050431 patent/WO2020102864A1/pt unknown
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US5088432A (en) * | 1988-11-14 | 1992-02-18 | Mitsubishi Jukogyo Kabushiki Kaisha | Anti-fouling system for substances in contact with seawater |
BR9106460A (pt) * | 1990-05-15 | 1993-05-18 | Marine Environmetal Research I | Processo e aparelho para a prevencao de incrustacoes e/ou corrosao de estruturas em agua do mar,agua saloubra e/ou agua doce |
US5143011A (en) | 1991-02-05 | 1992-09-01 | Stephen Rabbette | Method and apparatus for inhibiting barnacle growth on boats |
BR0010351A (pt) * | 1999-05-07 | 2002-01-08 | Dennis Mason | Método e aparelho para remover organismos marinhos de um substrato submerso |
JP2007055568A (ja) | 2005-08-25 | 2007-03-08 | Ichimon Kiko Kk | 低周波電流式船底防汚システム |
BRPI0710754A2 (pt) * | 2006-04-26 | 2011-06-14 | Shell Int Research | mÉtodo para usar um sistema de proteÇço catàdica de corrente impressa |
US20110100804A1 (en) | 2009-10-30 | 2011-05-05 | Stiftung Alfred-Wegener-Institut Fuer Polar- Und Meeresforschung | Electrochemical antifouling system for seawater-wetted structures |
BR102014008965A2 (pt) * | 2014-04-14 | 2016-05-17 | Diogo Mitsuo Oliveira Ogawa | sistema de emissão de corrente elétrica modulada para indução, controle e supressão de crescimento biológico na forma de biofouling e células planctônicas |
Also Published As
Publication number | Publication date |
---|---|
CN113631476A (zh) | 2021-11-09 |
KR20210093981A (ko) | 2021-07-28 |
BR112020016210A2 (pt) | 2021-07-27 |
US20210395900A1 (en) | 2021-12-23 |
JP2022509165A (ja) | 2022-01-20 |
EP3889033A1 (en) | 2021-10-06 |
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