JP5877125B2 - 腐食抑制装置及びそれを備えた海水淡水化装置並びにポンプ装置 - Google Patents
腐食抑制装置及びそれを備えた海水淡水化装置並びにポンプ装置 Download PDFInfo
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- JP5877125B2 JP5877125B2 JP2012120346A JP2012120346A JP5877125B2 JP 5877125 B2 JP5877125 B2 JP 5877125B2 JP 2012120346 A JP2012120346 A JP 2012120346A JP 2012120346 A JP2012120346 A JP 2012120346A JP 5877125 B2 JP5877125 B2 JP 5877125B2
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- 238000005260 corrosion Methods 0.000 title claims description 93
- 230000007797 corrosion Effects 0.000 title claims description 91
- 239000013535 sea water Substances 0.000 title claims description 82
- 238000010612 desalination reaction Methods 0.000 title claims description 34
- 230000001629 suppression Effects 0.000 title claims description 26
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 35
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims description 32
- 239000002184 metal Substances 0.000 claims description 31
- 229910052751 metal Inorganic materials 0.000 claims description 31
- 229910052799 carbon Inorganic materials 0.000 claims description 29
- 238000001223 reverse osmosis Methods 0.000 claims description 28
- 239000012528 membrane Substances 0.000 claims description 19
- 229920001971 elastomer Polymers 0.000 claims description 14
- 230000002401 inhibitory effect Effects 0.000 claims description 14
- 150000003839 salts Chemical class 0.000 claims description 14
- 239000003112 inhibitor Substances 0.000 claims description 11
- 239000013505 freshwater Substances 0.000 claims description 7
- 238000004519 manufacturing process Methods 0.000 claims description 6
- 238000011084 recovery Methods 0.000 claims description 5
- 229910002804 graphite Inorganic materials 0.000 claims description 3
- 239000010439 graphite Substances 0.000 claims description 3
- 229910000859 α-Fe Inorganic materials 0.000 claims description 3
- 238000009434 installation Methods 0.000 claims 1
- 230000035699 permeability Effects 0.000 claims 1
- 239000000463 material Substances 0.000 description 31
- 229910001220 stainless steel Inorganic materials 0.000 description 22
- 239000010935 stainless steel Substances 0.000 description 22
- 230000000694 effects Effects 0.000 description 9
- 238000000034 method Methods 0.000 description 8
- 238000007654 immersion Methods 0.000 description 7
- 229910000831 Steel Inorganic materials 0.000 description 5
- BASFCYQUMIYNBI-UHFFFAOYSA-N platinum Substances [Pt] BASFCYQUMIYNBI-UHFFFAOYSA-N 0.000 description 5
- 239000010959 steel Substances 0.000 description 5
- 238000002474 experimental method Methods 0.000 description 4
- XZPVPNZTYPUODG-UHFFFAOYSA-M sodium;chloride;dihydrate Chemical compound O.O.[Na+].[Cl-] XZPVPNZTYPUODG-UHFFFAOYSA-M 0.000 description 4
- 239000010405 anode material Substances 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
- 150000002500 ions Chemical class 0.000 description 3
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- 238000004210 cathodic protection Methods 0.000 description 2
- 150000001768 cations Chemical class 0.000 description 2
- 238000007599 discharging Methods 0.000 description 2
- 238000005086 pumping Methods 0.000 description 2
- 241000894006 Bacteria Species 0.000 description 1
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 description 1
- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 description 1
- HCHKCACWOHOZIP-UHFFFAOYSA-N Zinc Chemical compound [Zn] HCHKCACWOHOZIP-UHFFFAOYSA-N 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 239000010953 base metal Substances 0.000 description 1
- 239000012267 brine Substances 0.000 description 1
- 239000003575 carbonaceous material Substances 0.000 description 1
- 239000010406 cathode material Substances 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 239000000470 constituent Substances 0.000 description 1
- 230000006866 deterioration Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000004090 dissolution Methods 0.000 description 1
- 229910001039 duplex stainless steel Inorganic materials 0.000 description 1
- 238000005868 electrolysis reaction Methods 0.000 description 1
- 238000010828 elution Methods 0.000 description 1
- 229920006351 engineering plastic Polymers 0.000 description 1
- 230000001747 exhibiting effect Effects 0.000 description 1
- 238000001914 filtration Methods 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 229910052739 hydrogen Inorganic materials 0.000 description 1
- 239000001257 hydrogen Substances 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- WABPQHHGFIMREM-UHFFFAOYSA-N lead(0) Chemical compound [Pb] WABPQHHGFIMREM-UHFFFAOYSA-N 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 229910052744 lithium Inorganic materials 0.000 description 1
- 230000000813 microbial effect Effects 0.000 description 1
- 238000012544 monitoring process Methods 0.000 description 1
- 238000012856 packing Methods 0.000 description 1
- 230000035515 penetration Effects 0.000 description 1
- 229910052697 platinum Inorganic materials 0.000 description 1
- 229920006395 saturated elastomer Polymers 0.000 description 1
- HPALAKNZSZLMCH-UHFFFAOYSA-M sodium;chloride;hydrate Chemical compound O.[Na+].[Cl-] HPALAKNZSZLMCH-UHFFFAOYSA-M 0.000 description 1
- 239000002195 soluble material Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 230000003746 surface roughness Effects 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
- 229910052725 zinc Inorganic materials 0.000 description 1
- 239000011701 zinc Substances 0.000 description 1
Images
Classifications
-
- 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
- C02F1/44—Treatment of water, waste water, or sewage by dialysis, osmosis or reverse osmosis
- C02F1/441—Treatment of water, waste water, or sewage by dialysis, osmosis or reverse osmosis by reverse osmosis
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D61/00—Processes of separation using semi-permeable membranes, e.g. dialysis, osmosis or ultrafiltration; Apparatus, accessories or auxiliary operations specially adapted therefor
- B01D61/02—Reverse osmosis; Hyperfiltration ; Nanofiltration
- B01D61/025—Reverse osmosis; Hyperfiltration
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D61/00—Processes of separation using semi-permeable membranes, e.g. dialysis, osmosis or ultrafiltration; Apparatus, accessories or auxiliary operations specially adapted therefor
- B01D61/02—Reverse osmosis; Hyperfiltration ; Nanofiltration
- B01D61/08—Apparatus therefor
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D61/00—Processes of separation using semi-permeable membranes, e.g. dialysis, osmosis or ultrafiltration; Apparatus, accessories or auxiliary operations specially adapted therefor
- B01D61/02—Reverse osmosis; Hyperfiltration ; Nanofiltration
- B01D61/10—Accessories; Auxiliary operations
-
- 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
-
- 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
- C23F13/16—Electrodes characterised by the combination of the structure and the material
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D13/00—Pumping installations or systems
- F04D13/02—Units comprising pumps and their driving means
- F04D13/06—Units comprising pumps and their driving means the pump being electrically driven
- F04D13/08—Units comprising pumps and their driving means the pump being electrically driven for submerged use
- F04D13/10—Units comprising pumps and their driving means the pump being electrically driven for submerged use adapted for use in mining bore holes
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D3/00—Axial-flow pumps
- F04D3/005—Axial-flow pumps with a conventional single stage rotor
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D7/00—Pumps adapted for handling specific fluids, e.g. by selection of specific materials for pumps or pump parts
- F04D7/02—Pumps adapted for handling specific fluids, e.g. by selection of specific materials for pumps or pump parts of centrifugal type
- F04D7/06—Pumps adapted for handling specific fluids, e.g. by selection of specific materials for pumps or pump parts of centrifugal type the fluids being hot or corrosive, e.g. liquid metals
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2313/00—Details relating to membrane modules or apparatus
- B01D2313/24—Specific pressurizing or depressurizing means
- B01D2313/243—Pumps
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2315/00—Details relating to the membrane module operation
- B01D2315/12—Feed-and-bleed systems
-
- 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
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2303/00—Specific treatment goals
- C02F2303/08—Corrosion inhibition
-
- 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
- C23F2213/00—Aspects of inhibiting corrosion of metals by anodic or cathodic protection
- C23F2213/30—Anodic or cathodic protection specially adapted for a specific object
- C23F2213/31—Immersed structures, e.g. submarine structures
-
- 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
- C23F2213/00—Aspects of inhibiting corrosion of metals by anodic or cathodic protection
- C23F2213/30—Anodic or cathodic protection specially adapted for a specific object
- C23F2213/32—Pipes
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A20/00—Water conservation; Efficient water supply; Efficient water use
- Y02A20/124—Water desalination
- Y02A20/131—Reverse-osmosis
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
- Y02W10/00—Technologies for wastewater treatment
- Y02W10/30—Wastewater or sewage treatment systems using renewable energies
- Y02W10/37—Wastewater or sewage treatment systems using renewable energies using solar energy
Description
Claims (10)
- 内部を海水が流通する金属配管に一端が接続された配線と、該配線の他端に接続され、前記金属配管とは、該金属配管の一部であるフランジ間に設置されたゴムリングに挿入されることで電気的に絶縁されて設置されているアノードと、前記配線の途中に設置され、前記アノードと前記金属配管に電位差を生じさせる直流電源とを備え、
前記アノードは、カーボンシート、炭素膜、グラファイト、フェライトの少なくとも1つから形成されると共に、前記金属配管の内面直径よりも内側にある表面積を持ち、前記フランジを固定するボルト位置に該ボルト径以上の円空を有して前記金属配管内を流れる海水と接するように設置され、かつ、該アノードと前記金属配管とは前記配線を介して電気的に導通され、前記金属配管にマイナスの電位を付与することを特徴とする腐食抑制装置。 - 請求項1に記載の腐食抑制装置において、
前記配線の途中に、前記アノードと金属配管の間の電流を計測する電流計を備えていることを特徴とする腐食抑制装置。 - 請求項1に記載の腐食抑制装置において、
前記アノードは、角型、円型或いは短冊状のカーボンシートから形成されていることを特徴とする腐食抑制装置。 - 請求項1に記載の腐食抑制装置において、
前記アノードは、カーボンシートと絶縁フィルムから形成されていることを特徴とする腐食抑制装置。 - 請求項4に記載の腐食抑制装置において、
前記カーボンシートは、2つの絶縁フィルムに挟まれていることを特徴とする腐食抑制装置。 - 取水した海水を貯水する取水井と、該取水井からの海水が濾過器を経由し、該濾過器で濾過された海水を貯水する濾過海水槽と、該濾過海水槽からの濾過された海水が保安フィルターを介して高圧ポンプで導かれ、淡水と塩分濃縮水に分離する逆浸透膜モジュールと、該逆浸透膜モジュールで分離された淡水を貯水する生産水槽と、前記高圧ポンプと同軸に設置され、前記逆浸透膜モジュールで分離された塩分濃縮水を回収して濃縮水配管に排出する動力回収タービンとを備え、前記各装置が配管で接続されている海水淡水化装置において、
少なくとも前記高圧ポンプから下流に位置する前記配管に、請求項1乃至5のいずれか1項に記載の腐食抑制装置が設置されていることを特徴とする海水淡水化装置。 - 請求項6に記載の海水淡水化装置において、
前記配管の対向するフランジ間にゴムリングが設置され、該ゴムリングに前記腐食抑制装置のアノードが挿入されていることを特徴とする海水淡水化装置。 - 請求項7に記載の海水淡水化装置において、
前記ゴムリングの水浸透率が10%以下であることを特徴とする海水淡水化装置。 - シャフトと、該シャフトを中心として、それを支える上部軸受ブラケット及び下部軸受ブラケットと、前記シャフトの回転に伴い回転する羽根車と、水流の容器となる揚水管と、該揚水管を保持する吐出ケーシング及び吸込ケーシングとを備え、前記羽根車でもたらされる水流が、案内羽根を介して前記揚水管へ移動する水流となるポンプ装置において、
前記揚水管の外部に、少なくとも配線及び電源が配置され、アノード或いはカーボンシートが、前記上部軸受ブラケットと下部軸受ブラケット及び吸込ケーシングのフランジ部に、水流と接するように設置されている請求項1乃至5のいずれか1項に記載の腐食抑制装置を備えていることを特徴とするポンプ装置。 - 請求項9に記載のポンプ装置において、
前記配線は、前記下部軸受ブラケット、揚水管、吐出ケーシング、吸込ケーシング及び羽根車に接続され、これらが、前記アノード或いはカーボンシートに対して負の電位を保持するように電源により電圧が印加されることを特徴とするポンプ装置。
Priority Applications (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2012120346A JP5877125B2 (ja) | 2012-05-28 | 2012-05-28 | 腐食抑制装置及びそれを備えた海水淡水化装置並びにポンプ装置 |
IN10044DEN2014 IN2014DN10044A (ja) | 2012-05-28 | 2013-05-07 | |
CN201380028158.3A CN104364422A (zh) | 2012-05-28 | 2013-05-07 | 腐蚀抑制装置及具备其的海水淡化装置和泵装置 |
PCT/JP2013/062813 WO2013179858A1 (ja) | 2012-05-28 | 2013-05-07 | 腐食抑制装置及びそれを備えた海水淡水化装置並びにポンプ装置 |
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JP2012120346A JP5877125B2 (ja) | 2012-05-28 | 2012-05-28 | 腐食抑制装置及びそれを備えた海水淡水化装置並びにポンプ装置 |
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JP5877125B2 true JP5877125B2 (ja) | 2016-03-02 |
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JP (1) | JP5877125B2 (ja) |
CN (1) | CN104364422A (ja) |
IN (1) | IN2014DN10044A (ja) |
WO (1) | WO2013179858A1 (ja) |
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SG11201604516VA (en) * | 2013-12-04 | 2016-07-28 | Hitachi Ltd | Impressed current protect system |
JP2015187295A (ja) * | 2014-03-27 | 2015-10-29 | 株式会社日立製作所 | 電気防食システム |
JP6276124B2 (ja) * | 2014-07-07 | 2018-02-07 | 株式会社日立製作所 | 電気防食方法、及び電気防食システム |
CN104214468B (zh) * | 2014-07-31 | 2016-06-29 | 西安石油大学 | 一种外置牺牲阳极防止管线内壁腐蚀装置及方法 |
CN106016336B (zh) * | 2016-06-24 | 2017-12-19 | 桂林市淦隆环保科技有限公司 | 耐腐蚀醇基燃料油泵及防腐蚀方法 |
CN108176228A (zh) * | 2018-03-02 | 2018-06-19 | 秦皇岛天秦装备制造股份有限公司 | 一种防混合反渗透膜壳 |
CN108796509A (zh) * | 2018-08-23 | 2018-11-13 | 温州嘉伟环保科技有限公司 | 一种用于强腐蚀性污水反渗透膜法的水泵和管件保护装置 |
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