CN107525062A - A kind of thermal power plant's superheater tube sample dirt, which measures, determines system and method - Google Patents
A kind of thermal power plant's superheater tube sample dirt, which measures, determines system and method Download PDFInfo
- Publication number
- CN107525062A CN107525062A CN201710728862.XA CN201710728862A CN107525062A CN 107525062 A CN107525062 A CN 107525062A CN 201710728862 A CN201710728862 A CN 201710728862A CN 107525062 A CN107525062 A CN 107525062A
- Authority
- CN
- China
- Prior art keywords
- superheater tube
- tube sample
- electrolysis
- power plant
- thermal power
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 238000000034 method Methods 0.000 title claims abstract description 24
- 238000005868 electrolysis reaction Methods 0.000 claims abstract description 46
- BASFCYQUMIYNBI-UHFFFAOYSA-N platinum Chemical compound [Pt] BASFCYQUMIYNBI-UHFFFAOYSA-N 0.000 claims abstract description 36
- 229910052697 platinum Inorganic materials 0.000 claims abstract description 18
- 239000003795 chemical substances by application Substances 0.000 claims abstract description 11
- 239000010802 sludge Substances 0.000 claims abstract description 6
- 238000005259 measurement Methods 0.000 claims description 14
- 238000003756 stirring Methods 0.000 claims description 10
- CSCPPACGZOOCGX-UHFFFAOYSA-N Acetone Chemical compound CC(C)=O CSCPPACGZOOCGX-UHFFFAOYSA-N 0.000 claims description 8
- 239000007864 aqueous solution Substances 0.000 claims description 5
- KLOIYEQEVSIOOO-UHFFFAOYSA-N carbocromen Chemical compound CC1=C(CCN(CC)CC)C(=O)OC2=CC(OCC(=O)OCC)=CC=C21 KLOIYEQEVSIOOO-UHFFFAOYSA-N 0.000 claims description 5
- QAOWNCQODCNURD-UHFFFAOYSA-N Sulfuric acid Chemical compound OS(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 claims description 4
- 238000013019 agitation Methods 0.000 claims description 4
- 230000005611 electricity Effects 0.000 claims description 4
- 238000005238 degreasing Methods 0.000 claims description 2
- 238000012545 processing Methods 0.000 claims description 2
- 239000000725 suspension Substances 0.000 claims description 2
- 238000002604 ultrasonography Methods 0.000 claims 1
- 229910052751 metal Inorganic materials 0.000 abstract description 10
- 239000002184 metal Substances 0.000 abstract description 10
- 238000012937 correction Methods 0.000 abstract description 4
- 230000007797 corrosion Effects 0.000 abstract description 4
- 238000005260 corrosion Methods 0.000 abstract description 4
- 230000009286 beneficial effect Effects 0.000 abstract description 3
- 239000011159 matrix material Substances 0.000 abstract description 3
- 230000000694 effects Effects 0.000 abstract description 2
- 230000002000 scavenging effect Effects 0.000 description 6
- 238000005303 weighing Methods 0.000 description 4
- 239000000126 substance Substances 0.000 description 3
- 238000003556 assay Methods 0.000 description 2
- 238000002474 experimental method Methods 0.000 description 2
- 229910052739 hydrogen Inorganic materials 0.000 description 2
- 239000001257 hydrogen Substances 0.000 description 2
- 230000006872 improvement Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 239000000243 solution Substances 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- KRKNYBCHXYNGOX-UHFFFAOYSA-L 2-(carboxymethyl)-2-hydroxysuccinate Chemical compound [O-]C(=O)CC(O)(C(=O)O)CC([O-])=O KRKNYBCHXYNGOX-UHFFFAOYSA-L 0.000 description 1
- QGZKDVFQNNGYKY-UHFFFAOYSA-O Ammonium Chemical compound [NH4+] QGZKDVFQNNGYKY-UHFFFAOYSA-O 0.000 description 1
- VEXZGXHMUGYJMC-UHFFFAOYSA-N Hydrochloric acid Chemical compound Cl VEXZGXHMUGYJMC-UHFFFAOYSA-N 0.000 description 1
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 description 1
- 239000002253 acid Substances 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 230000008901 benefit Effects 0.000 description 1
- 238000001311 chemical methods and process Methods 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- YXVFQADLFFNVDS-UHFFFAOYSA-N diammonium citrate Chemical class [NH4+].[NH4+].[O-]C(=O)CC(O)(C(=O)O)CC([O-])=O YXVFQADLFFNVDS-UHFFFAOYSA-N 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000011156 evaluation Methods 0.000 description 1
- PCHJSUWPFVWCPO-UHFFFAOYSA-N gold Chemical compound [Au] PCHJSUWPFVWCPO-UHFFFAOYSA-N 0.000 description 1
- 239000010931 gold Substances 0.000 description 1
- 229910052737 gold Inorganic materials 0.000 description 1
- 150000002431 hydrogen Chemical class 0.000 description 1
- 238000005554 pickling Methods 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 239000013049 sediment Substances 0.000 description 1
- 238000009785 tube rolling Methods 0.000 description 1
- 239000012498 ultrapure water Substances 0.000 description 1
- 238000005406 washing Methods 0.000 description 1
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F22—STEAM GENERATION
- F22B—METHODS OF STEAM GENERATION; STEAM BOILERS
- F22B37/00—Component parts or details of steam boilers
- F22B37/02—Component parts or details of steam boilers applicable to more than one kind or type of steam boiler
- F22B37/38—Determining or indicating operating conditions in steam boilers, e.g. monitoring direction or rate of water flow through water tubes
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F22—STEAM GENERATION
- F22B—METHODS OF STEAM GENERATION; STEAM BOILERS
- F22B37/00—Component parts or details of steam boilers
- F22B37/02—Component parts or details of steam boilers applicable to more than one kind or type of steam boiler
- F22B37/48—Devices for removing water, salt, or sludge from boilers; Arrangements of cleaning apparatus in boilers; Combinations thereof with boilers
- F22B37/54—De-sludging or blow-down devices
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N27/00—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means
- G01N27/26—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating electrochemical variables; by using electrolysis or electrophoresis
- G01N27/28—Electrolytic cell components
Abstract
Measured the present invention relates to a kind of thermal power plant's superheater tube sample dirt and determine system and method, wherein, the system include electrolysis stripping apparatus for eliminating sludge, the ultrasonic cleaner for carrying out ungrease treatment to superheater tube sample before scale removal and after scale removal and for weigh before scale removal and after scale removal superheater tube sample quality electronic balance；Electrolysis stripping apparatus for eliminating sludge includes DC electrolysis instrument and accommodates the electrolytic cell of release agent for electrolytic, DC electrolysis instrument includes positive pole and negative pole, positive pole and negative pole are connected to platinum electrode and superheater tube sample, platinum electrode and superheater tube sample are placed in electrolytic cell, DC electrolysis are carried out in the presence of release agent for electrolytic, peel off the dirty thing on superheater tube sample.Scale removal speed of the present invention is fast, takes the short technique effect low with parent metal blank wastage amount, to the damage very little of pipe sample parent metal, generally it is not required to do blank correction, matrix can keep the original appearance of dirty down tube sample, highly beneficial for observation superheater tube sample metal corrosion under scale form.
Description
Technical field
Measured the invention belongs to thermal power plant's superheater tube sample dirt and determine technical field, more particularly to a kind of thermal power plant's superheater tube
Sample dirt, which measures, determines system and method.
Background technology
The determination of the Chemical cleaning interval time limit and the evaluation of boiler water process and the water chemistry method of operation of power plant boiler,
All it is the sediment yield (g/m with generator tube inner surface2) or scaling rate (g/ (m2A) it is) criterion, and adopts at present
Dirt amount measured by chemical assay as defined in professional standard is the average value that boiler tube is measured to fiery side and back-fire side dirt, is surveyed
It is generally relatively low to measure result.Further, since boiler pressure is higher, dirty matter is harder, and the adhesion with inside pipe wall is more firm, using usual
Even if chemical assay extend scavenging period and also be difficult to thoroughly remove the dirt of superheater tube, or due to scavenging period
Corrosion losses that are long and adding parent metal, even if using blank correction method, it can still cause larger measurement error.Cause
This, in order to quickly and accurately determine the dirt amount of superheater tube, improves the security of thermal power plant's superheater tube, it is necessary to which a kind of can be real
Now quickly and accurately determine the system and method for superheater pipe scale amount.
The content of the invention
In order to solve the above technical problems, it is an object of the invention to provide a kind of thermal power plant's superheater tube sample dirt amount measurement system
And method, realize and quickly and accurately determine superheater tube sample dirt amount.
The invention provides a kind of thermal power plant's superheater tube sample dirt amount measurement system, including electrolysis stripping apparatus for eliminating sludge, use
Superheater tube sample carries out the ultrasonic cleaner of ungrease treatment and for weighing before scale removal and scale removal before to scale removal and after scale removal
The electronic balance of superheater tube sample quality afterwards；
Electrolysis stripping apparatus for eliminating sludge includes DC electrolysis instrument and accommodates the electrolytic cell of release agent for electrolytic, DC electrolysis instrument bag
Positive pole and negative pole are included, positive pole and negative pole are connected to platinum electrode and superheater tube sample, and platinum electrode and superheater tube sample are put
In in electrolytic cell, carrying out DC electrolysis in the presence of release agent for electrolytic, the dirty thing on superheater tube sample is peeled off.
Further, release agent for electrolytic is the 10wt% diammonium hydrogen citrate aqueous solution.
Further, it is provided with magnetic stir bar in electrolytic cell.
Further, the system also includes support, and support is connected with platinum electrode and superheater tube sample, for platinum is electric
Pole and superheater tube sample are suspended in electrolytic cell.
Further, support includes vertical support frame and horizontal stand, and vertical support frame is detachably connected with horizontal stand, platinum
Electrode and superheater tube sample connect with horizontal stand suspension.
Further, DC electrolysis instrument, which is provided with, is used for the adjustment knob for adjusting current density and for showing current density
Current density display screen.
Further, the revolution that electrolytic cell includes being used to adjust magnetic stir bar revolution adjusts knob and for showing magnetic force
The magnetic stir bar revolution display screen of stirrer revolution.
Further, ultrasonic cleaner includes ultrasonic cleaner, and acetone soln is accommodated in ultrasonic cleaner.
Present invention also offers a kind of thermal power plant's superheater tube sample dirt quantity measuring method, including：
Ultrasonic degreasing processing is carried out to superheater tube sample surface to be determined；
Weigh the mass M 1 of superheater tube sample after ungrease treatment；
Scale removal is carried out to superheater tube sample using electrolysis stripping method；
Weigh the mass M 2 of superheater tube sample after scale removal；
M1-M2 difference is calculated, obtains the dirt amount of superheater tube sample.
Further, scale removal is carried out to superheater tube sample using electrolysis stripping method to specifically include：
Superheater tube sample to be determined is connected with electrolysis apparatus negative pole, platinum electrode is connected with electrolysis apparatus positive pole, by platinum
Electrode and superheater tube sample are placed in the electrolytic cell for accommodating the 10wt% diammonium hydrogen citrate aqueous solution, are led in aqueous sulfuric acid
With direct current, in 0.01A/cm2Current density under carry out electrolysis stripping, remove the dirty thing on superheater tube sample.
By such scheme, measured by thermal power plant's superheater tube sample dirt and determine system and method, realize scale removal speed soon,
The short technique effect low with parent metal blank wastage amount is taken, to the damage very little of pipe sample parent metal, is generally not required to do sky
White correction, matrix can keep the original appearance of dirty down tube sample, highly beneficial for observation superheater tube sample metal corrosion under scale form.
Described above is only the general introduction of technical solution of the present invention, in order to better understand the technological means of the present invention,
And can be practiced according to the content of specification, below with presently preferred embodiments of the present invention and coordinate accompanying drawing describe in detail as after.
Brief description of the drawings
Fig. 1 is a kind of structural representation of thermal power plant's superheater tube sample dirt amount measurement system of the present invention.
Embodiment
With reference to the accompanying drawings and examples, the embodiment of the present invention is described in further detail.Implement below
Example is used to illustrate the present invention, but is not limited to the scope of the present invention.
Join shown in Fig. 1, present embodiments provide a kind of thermal power plant's superheater tube sample dirt amount measurement system, including：Direct current
Solve electronic balance 5 and the exchange of instrument 1, stand for experiment 2, magnetic agitation electrolytic cell 3, ultrasonic cleaner 4 and a ten thousandth precision
220V 50Hz power supplys 6.
DC electrolysis instrument 1 includes：DC voltage display screen 7, DC voltage regulation knob 8, current density display screen 9, electricity
Current density adjustment knob 10, electrolysis apparatus positive pole 11, electrolysis apparatus negative pole 12.
Stand for experiment 2 includes, vertical support frame 13, horizontal stand 15, for fixing horizontal stand 15 and vertical support frame 13
Fixed knob 14.
Magnetic agitation electrolytic cell 3 includes：Magnetic stir bar 26, magnetic stir bar revolution display screen 29, revolution adjustment knob
28th, electrolytic cell 27, negative electrode connecting wire 17, the fixing 16 for connecting negative electrode connecting wire 17 and horizontal stand 15, use
Connect in connection superheater tube sample 19 and the conductive clamp 18 of negative electrode connecting wire 17, anode connecting wire 22, for jointed anode
Connect the fixing 21 of wire and horizontal stand 15, the conductive clamp for being connected platinum electrode 24 and anode connecting wire 22
23。
Ultrasonic cleaner 4 includes：Ultrasonic cleaner 30 and ultrasonic wave scavenging period setting knob 31.
Electronic balance 5 includes weighing pan 32.
DC electrolysis instrument 1 is used by the measurement system, carried out in the presence of the release agent for electrolytic in electrolytic cell 27 straight
Stream electrolysis, using the method measure dirt amount of electrolysis stripping.Specifically, superheater tube sample 19 is connected with electrolysis apparatus negative pole 12, in vain
Gold electrode 24 is connected with electrolysis apparatus positive pole 11, and direct current is passed in release agent for electrolytic (the 10wt% diammonium hydrogen citrates aqueous solution)
Electricity, in 0.01A/cm2Current density under carry out electrolysis stripping, negative electrode produces a large amount of hydrogen, molten in the stripping of bubble hydrogen and acid
Under the double action of solution, the dirty thing on superheater tube sample is set to strip down rapidly.Dirt amount continuous mode includes：
Step 1：Superheater tube sample to be determined is put into the ultrasonic cleaner 30 of ultrasonic cleaner 4, ultrasonic wave is clear
Acetone soln is put into washing trough 30, rotary ultrasonic ripple scavenging period setting knob 31, it is 2 minutes to set ultrasonic wave scavenging period,
Ungrease treatment is carried out to superheater tube sample surface using ultrasonic wave.
Step 2：Superheater tube sample after ungrease treatment is put on the weighing pan 32 of electronic balance 5, weighs superheater tube
Quality M1 before sample scale removal.
Step 3：Superheater tube sample 19 is connected with conductive clamp 18, successively by negative electrode connecting wire 17, wire 20 with
Electrolysis apparatus negative pole 12 connects；Platinum electrode 24 is connected with conductive clamp 23, successively by anode connecting wire 22, wire 25 with
Electrolysis apparatus positive pole 11 connects.Start the device of magnetic agitation electrolytic cell 3, magnetic stir bar 26 starts to stir electrolysis stripping in electrolytic cell
Agent；The power supply of DC electrolysis instrument 1 is connected, starts electrolysis stripping, it is 20 minutes to set the electrolysis stripping time.
Step 4：Superheater tube sample 19 is removed from conductive clamp 18, by the superheater tube sample 19 after electrolysis stripping again
It is put into the ultrasonic cleaner 30 of ultrasonic cleaner 4, acetone soln is put into ultrasonic cleaner 30, rotary ultrasonic ripple is clear
Time setting knob 31 is washed, and it is the superheater tube sample after ungrease treatment to be put after 2 minutes, 2 minutes to set ultrasonic wave scavenging period
Enter on the weighing pan 32 of electronic balance 5, weigh mass M 2 after superheater tube sample scale removal；
Step 5：The difference that superheater tube sample dirt amount is M1-M2.
The release agent for electrolytic uses diammonium hydrogen citrate and high purity water, and hydrogen citrate two is configured to according to 10wt% concentration
Aqueous ammonium.
This method and existing power industry standard DL/T 1115-2009《Power plant units overhaul check directive/guide》Middle regulation
Chlorohydric acid pickling method and tube rolling method compare, have that scale removal speed is fast, takes the short and low advantage of parent metal blank wastage amount, should
Method is generally not required to do blank correction, matrix can keep the original appearance of superheater tube under dirt, should to the damage very little of pipe sample parent metal
Method is highly beneficial for observation superheater tube sample metal corrosion under scale form.
Described above is only the preferred embodiment of the present invention, is not intended to limit the invention, it is noted that for this skill
For the those of ordinary skill in art field, without departing from the technical principles of the invention, can also make it is some improvement and
Modification, these improvement and modification also should be regarded as protection scope of the present invention.
Claims (10)
- A kind of 1. thermal power plant's superheater tube sample dirt amount measurement system, it is characterised in that including electrolysis stripping apparatus for eliminating sludge, for pair Before scale removal and after scale removal superheater tube sample carry out ungrease treatment ultrasonic cleaner and for weigh before scale removal and scale removal after mistake The electronic balance of hot device pipe sample quality；The electrolysis stripping apparatus for eliminating sludge includes DC electrolysis instrument and accommodates the electrolytic cell of release agent for electrolytic, the DC electrolysis Instrument includes positive pole and negative pole, and the positive pole and negative pole are connected to platinum electrode and the superheater tube sample, the platinum electricity Pole and superheater tube sample are placed in the electrolytic cell, and DC electrolysis are carried out in the presence of release agent for electrolytic, peel off superheater tube Dirty thing on sample.
- A kind of 2. thermal power plant's superheater tube sample dirt amount measurement system according to claim 1, it is characterised in that the electrolysis Remover is the 10wt% diammonium hydrogen citrate aqueous solution.
- A kind of 3. thermal power plant's superheater tube sample dirt amount measurement system according to claim 1, it is characterised in that the electrolysis Magnetic stir bar is provided with pond.
- 4. a kind of thermal power plant's superheater tube sample dirt amount measurement system according to claim 1, it is characterised in that also include branch Frame, the support are connected with the platinum electrode and superheater tube sample, for the platinum electrode and superheater tube sample to be suspended In in the electrolytic cell.
- A kind of 5. thermal power plant's superheater tube sample dirt amount measurement system according to claim 4, it is characterised in that the support Including vertical support frame and horizontal stand, the vertical support frame is detachably connected with the horizontal stand, the platinum electrode and mistake Hot device pipe sample connects with horizontal stand suspension.
- A kind of 6. thermal power plant's superheater tube sample dirt amount measurement system according to claim 1, it is characterised in that the direct current Electrolysis apparatus, which is provided with, is used for the adjustment knob for adjusting current density and the current density display screen for showing current density.
- A kind of 7. thermal power plant's superheater tube sample dirt amount measurement system according to claim 3, it is characterised in that the electrolysis The revolution that pond includes being used to adjust magnetic stir bar revolution adjusts knob and the magnetic agitation for showing magnetic stir bar revolution Sub- revolution display screen.
- A kind of 8. thermal power plant's superheater tube sample dirt amount measurement system according to claim 1, it is characterised in that the ultrasound Ripple washer includes ultrasonic cleaner, and acetone soln is accommodated in the ultrasonic cleaner.
- A kind of 9. thermal power plant's superheater tube sample dirt quantity measuring method, it is characterised in that including：Ultrasonic degreasing processing is carried out to superheater tube sample surface to be determined；Weigh the mass M 1 of superheater tube sample after ungrease treatment；Scale removal is carried out to superheater tube sample using electrolysis stripping method；Weigh the mass M 2 of superheater tube sample after scale removal；M1-M2 difference is calculated, obtains the dirt amount of superheater tube sample.
- 10. a kind of thermal power plant's superheater tube sample dirt quantity measuring method according to claim 9, it is characterised in that described to adopt Scale removal is carried out with electrolysis stripping method to superheater tube sample to specifically include：Superheater tube sample to be determined is connected with electrolysis apparatus negative pole, platinum electrode is connected with electrolysis apparatus positive pole, by platinum electrode And superheater tube sample is placed in the electrolytic cell for accommodating the 10wt% diammonium hydrogen citrate aqueous solution, passed in aqueous sulfuric acid straight Stream electricity, in 0.01A/cm2Current density under carry out electrolysis stripping, remove the dirty thing on superheater tube sample.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710728862.XA CN107525062A (en) | 2017-08-23 | 2017-08-23 | A kind of thermal power plant's superheater tube sample dirt, which measures, determines system and method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710728862.XA CN107525062A (en) | 2017-08-23 | 2017-08-23 | A kind of thermal power plant's superheater tube sample dirt, which measures, determines system and method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN107525062A true CN107525062A (en) | 2017-12-29 |
Family
ID=60682030
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710728862.XA Pending CN107525062A (en) | 2017-08-23 | 2017-08-23 | A kind of thermal power plant's superheater tube sample dirt, which measures, determines system and method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107525062A (en) |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB771314A (en) * | 1953-03-18 | 1957-03-27 | Herbert Donald Walton | Improvements in and relating to the electrolytic cleaning of articles of metal |
| US4363709A (en) * | 1981-02-27 | 1982-12-14 | Allegheny Ludlum Steel Corporation | High current density, acid-free electrolytic descaling process |
| ITRM20000456A0 (en) * | 2000-08-10 | 2000-08-10 | Ct Sviluppo Materiali Spa | CONTINUOUS ELECTROLYTIC PICKLING METHOD OF METALLIC PRODUCTS WITH ALTERNATING CURRENT POWERED BLADES. |
| US20020108868A1 (en) * | 1999-09-20 | 2002-08-15 | Aeromet Technologies, Inc. | External counter electrode |
| JP2007260493A (en) * | 2006-03-27 | 2007-10-11 | Kurita Water Ind Ltd | Electrolyzing apparatus |
| CN101585569A (en) * | 2009-07-08 | 2009-11-25 | 成都飞创科技有限公司 | Circulating water electrolytic descaling device and descaling method |
| CN207527553U (en) * | 2017-08-23 | 2018-06-22 | 大唐东北电力试验研究所有限公司 | A kind of thermal power plant's superheater tube sample dirt amount measurement system |
-
2017
- 2017-08-23 CN CN201710728862.XA patent/CN107525062A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB771314A (en) * | 1953-03-18 | 1957-03-27 | Herbert Donald Walton | Improvements in and relating to the electrolytic cleaning of articles of metal |
| US4363709A (en) * | 1981-02-27 | 1982-12-14 | Allegheny Ludlum Steel Corporation | High current density, acid-free electrolytic descaling process |
| US20020108868A1 (en) * | 1999-09-20 | 2002-08-15 | Aeromet Technologies, Inc. | External counter electrode |
| ITRM20000456A0 (en) * | 2000-08-10 | 2000-08-10 | Ct Sviluppo Materiali Spa | CONTINUOUS ELECTROLYTIC PICKLING METHOD OF METALLIC PRODUCTS WITH ALTERNATING CURRENT POWERED BLADES. |
| JP2007260493A (en) * | 2006-03-27 | 2007-10-11 | Kurita Water Ind Ltd | Electrolyzing apparatus |
| CN101585569A (en) * | 2009-07-08 | 2009-11-25 | 成都飞创科技有限公司 | Circulating water electrolytic descaling device and descaling method |
| CN207527553U (en) * | 2017-08-23 | 2018-06-22 | 大唐东北电力试验研究所有限公司 | A kind of thermal power plant's superheater tube sample dirt amount measurement system |
Non-Patent Citations (1)
| Title |
|---|
| 徐寿昌: "《特种加工基础实训教程》", 北京理工大学出版社 * |
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| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
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Application publication date: 20171229 |