CN108404642A - The glass flake composite anti-corrosive technique of desulfurization by lime gypsum method tower - Google Patents
The glass flake composite anti-corrosive technique of desulfurization by lime gypsum method tower Download PDFInfo
- Publication number
- CN108404642A CN108404642A CN201810311646.XA CN201810311646A CN108404642A CN 108404642 A CN108404642 A CN 108404642A CN 201810311646 A CN201810311646 A CN 201810311646A CN 108404642 A CN108404642 A CN 108404642A
- Authority
- CN
- China
- Prior art keywords
- glass flake
- desulfurization
- thickness
- tower
- sandblasting
- 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
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
- B01D53/34—Chemical or biological purification of waste gases
- B01D53/46—Removing components of defined structure
- B01D53/48—Sulfur compounds
- B01D53/50—Sulfur oxides
- B01D53/501—Sulfur oxides by treating the gases with a solution or a suspension of an alkali or earth-alkali or ammonium compound
- B01D53/502—Sulfur oxides by treating the gases with a solution or a suspension of an alkali or earth-alkali or ammonium compound characterised by a specific solution or suspension
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2251/00—Reactants
- B01D2251/40—Alkaline earth metal or magnesium compounds
- B01D2251/404—Alkaline earth metal or magnesium compounds of calcium
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2251/00—Reactants
- B01D2251/60—Inorganic bases or salts
- B01D2251/602—Oxides
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Health & Medical Sciences (AREA)
- Biomedical Technology (AREA)
- Environmental & Geological Engineering (AREA)
- Analytical Chemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Preventing Corrosion Or Incrustation Of Metals (AREA)
Abstract
The present invention relates to desulfurizing towers to fabricate field, and the glass flake composite anti-corrosive technique of specifically a kind of desulfurization by lime gypsum method tower includes the following steps：Include the following steps：1）Inspection needs corrosion-resistant surface；2）Sandblasting；3）Brush primary coat；4）Corrosion protective lining is constructed；5）It checks；6）Processing to defective work.Anticorrosion process operating process of the present invention is simple, and the cost of material is low, favorable anti-corrosion effect.
Description
Technical field
The present invention relates to desulfurizing towers to fabricate field, and the glass flake of specifically a kind of desulfurization by lime gypsum method tower is multiple
Close anticorrosion process.
Background technology
Desulfurizing tower is the equipment for carrying out desulfurization process to industrial waste gas, is the important equipment in chemical industry equipment, desulfurizing tower is
A kind of desulfuration efficiency is high, the desulphurization plant of the lower simultaneous energy dedusting of the pressure loss.
Desulfurizing tower has evolved into spraying type, Venturi type, eddy flow template, eddy flow column type, floating ball by improvement for many years
Various types of desulfurizing towers, the equipment and technologies such as type, sieve plate type, Pneumatic emulsifying type reach its maturity.
Wherein, desulfurization by lime gypsum method be it is a kind of efficiently, the desulfurization method of low power consuming, principle be using lime stone or
For lime as desulfurization absorbent, lime stone is mixed into absorption slurries through pulverizing and jevigating powdering and water, when use lime for
When absorbent, pulverized limestone is after digestion process plus absorbent slurry is made in water.In absorption tower, it is mixed with smoke contacts to absorb slurries
It closing, calcium carbonate in sulfur dioxide and slurries in flue gas and the oxidation air blasted are chemically reacted to be removed,
Final reacting product is gypsum.
There are some sour gas inside desulfurizing tower, have the function of corrosion to desulfurization inner wall of tower, in addition, being blended in slurries
In impurity particle desulfurization inner wall of tower can be caused to scratch, to influence the service life of desulfurizing tower.
Invention content
The technical problem to be solved by the present invention is to overcome the defects of the prior art, provide a kind of desulfurization by lime gypsum method tower
Glass flake composite anti-corrosive technique.
In order to solve the above technical problem, the present invention provides the following technical solutions：
A kind of glass flake composite anti-corrosive technique of desulfurization by lime gypsum method tower, includes the following steps：
1）Inspection needs corrosion-resistant surface
Weld seam processing on the component of desulfurizing tower is in the arc-shaped, and the transverse direction of all liners, longitudinal seam need continuously, and with the table that connects
Face keeps smooth；
Surface soldered defect is filled up such as crack, recess by welding again, keeps smooth with neighbouring surface；
All welding slags on surface are removed, by the way of cutting, are finally polishing to smooth；
The turning of all liners and edge processing are in the arc-shaped.
2）Sandblasting
Need the metal surface of liner that should carry out blasting treatment according to specification, blast media selects quartz sand, quartz sand that should clean
Dry, compressed air removes oil removing, dirt and moisture content, and for the pressure control of compressed air in 0.6~1Mpa, sandblasting reaches Sa2.5
Grade,
The surface of primary coat is brushed, near zone is needed until the region of brush primary coat is tack-free, then carries out sandblasting；
It to be cleaned after sandblasting, fully remove dust.
3）Brush primary coat
Primary coat material selection crosslinking agent is uniformly brushed with hair rolling or hairbrush in sand blasted surface, to be accomplished without siltation, stream
It hangs or the irregular phenomenon of thickness occurs.
4）Corrosion protective lining is constructed
After desulfurization inner wall of tower whole brush primary coat, start corrosion protective lining construction,
4.1）1 is pressed with vinylite and talcum powder:3 ratio is mixed into putty, not pad in tower body and weld seam bumps
Flat place, uniformly smears into burnishing surface or arcwall face, waits for corrosion protective lining construction,
4.2）The reconciliation of lining material, is mixed in a certain ratio vinylite and glass flake plasticine, wherein temperature exists
At 35 DEG C -25 DEG C, the ratio of vinylite and glass flake plasticine is 5:1, temperature is at 24 DEG C -15 DEG C, vinyl
The ratio of resin and glass flake plasticine is 8:1, temperature is at 14 DEG C -10 DEG C, vinylite and glass flake plasticine
Ratio be 10:1, temperature is at 10 DEG C -- and at 10 DEG C, then dosage≤5% of glass flake adds 3 parts of curing agent, promote
1-5 parts of agent with blender adequately stir evenly for use after reconciliation,
4.3）Lining construction main points are rolled above-mentioned lining material brushing with hair in base coating surface, ready glass fibre
In cloth tiling, then with hair rolling lining material is dipped, gently roller coating is on glass fabric, then with plastic scrapers glass fabric
Interior removal of bubbles, according to said method sets gradually multilayer woven glass fabric, until anti-corrosion thickness reaches 1.8-2.2 millimeters,
4.4）After anti-corrosion reaches thickness, in desulfurizing tower at downward 1 meter of the bottom surface of spray beam, continue to brush 2-3 millis on erosion resistant coating
The silicon carbide wearing layer of rice；More than desulfurization tower bottom and bottom at 2.5 meters, it is resistance to continue 1 millimeter silicon carbide of brushing on erosion resistant coating
Grind layer；Vinylite and carborundum powder are pressed 3 by the reconciliation of silicon carbide wearing layer:1 ratio mixing, then adds curing agent 3
1-3 parts of part and accelerating agent, are adequately stirred after reconciliation with blender.
5）It checks：
5.1）Visual examination：Visually, finger, which touches, checks the defects of confirming without bubbling, scar, bad hardening；
5.2）Earth detection：It is scanned, voltage 8000V, is confirmed without electric leakage comprehensively using high voltage low cycle electrical Spark plug optical fiber sensor instrument；
5.3）Film thickness inspection:Using electro-magnetic thickness gage, per 2m2It surveys at one, confirms liner thickness.
6）Processing to defective work：
Thickness must be supplied at thickness deficiency；There are the places of protrusion, injurious surface mark, bubble to ensure thickness not less than minimum thickness
In the case of, it is polished with angle grinder；To electric leakage, bubbling, stripping place, to remove after defect by repairing main points repairing.
Interior reinforcing member that desulfurizing tower includes, additional firmware, support element all should be welded to tower wall before lining construction starts.
Provisional support or hanging ring needs to remove before lining construction, and the region is polished smoothly.
When the relative humidity of working region is more than 85%, sandblasting cannot carry out.
If sandblasting rear surface is got rusty, region of getting rusty should be according to requiring sandblasting again.
In summer rainy weather, it is necessary to sandblasting face be cleaned up before raining, timely round brush primary coat prevents the life that drenches with rain
Rust；In case of surface oxidisation, region of getting rusty should be according to requiring sandblasting again；Spring, autumn, three season of winter, air is relatively dry, specifically
The time interval of derusting by sandblasting and brush primary coat is subject to sandblasting rear surface without floating rust.
The advantageous effect that is reached of the present invention is：
After technique according to the invention carries out anticorrosive construction, desulfurization inner wall of tower wear-and corrosion-resistant improves service life.
Anticorrosion process operating process of the present invention is simple, and the cost of material is low, favorable anti-corrosion effect.
Description of the drawings
Attached drawing is used to provide further understanding of the present invention, and a part for constitution instruction, the reality with the present invention
It applies example to be used to explain the present invention together, not be construed as limiting the invention.In the accompanying drawings：
Fig. 1 is the structure chart of the desulfurization inner wall of tower after anticorrosion process is constructed.
In figure：1, desulfurization tower wall；2, priming coat；3, erosion resistant coating；4, silicon carbide wearing layer.
Specific implementation mode
Hereinafter, preferred embodiments of the present invention will be described with reference to the accompanying drawings, it should be understood that preferred reality described herein
Apply example only for the purpose of illustrating and explaining the present invention and is not intended to limit the present invention.
Embodiment：
A kind of glass flake composite anti-corrosive technique of desulfurization by lime gypsum method tower, includes the following steps：
1）Inspection needs corrosion-resistant surface
Weld seam processing on the component of desulfurizing tower is in the arc-shaped, and the transverse direction of all liners, longitudinal seam need continuously, and with the table that connects
Face keeps smooth；
Surface soldered defect is filled up such as crack, recess by welding again, keeps smooth with neighbouring surface；
All welding slags on surface are removed, by the way of cutting, are finally polishing to smooth；
The turning of all liners and edge processing are in the arc-shaped；
Interior reinforcing member that desulfurizing tower includes, additional firmware, support element all should be welded to tower wall before lining construction starts；
Provisional support or hanging ring needs to remove before lining construction, and the region is polished smoothly.
2）Sandblasting
Need the metal surface of liner that should carry out blasting treatment according to specification, blast media selects quartz sand, quartz sand that should clean
Dry, compressed air removes oil removing, dirt and moisture content, and for the pressure control of compressed air in 1Mpa, sandblasting reaches Sa2.5 grades,
The surface of primary coat is brushed, near zone is needed until the region of brush primary coat is tack-free, then carries out sandblasting；
It to be cleaned after sandblasting, fully remove dust；
When the relative humidity of working region is more than 85%, sandblasting cannot carry out；
If sandblasting rear surface is got rusty, region of getting rusty should be according to requiring sandblasting again.
3）Brush primary coat
Primary coat material selection crosslinking agent is uniformly brushed with hair rolling or hairbrush in sand blasted surface, to be accomplished without siltation, stream
It hangs or the irregular phenomenon of thickness occurs, the thickness of priming coat is 0.5 millimeter.
In summer rainy weather, it is necessary to sandblasting face be cleaned up before raining, timely round brush primary coat prevents the life that drenches with rain
Rust；In case of surface oxidisation, region of getting rusty should be according to requiring sandblasting again；Spring, autumn, three season of winter, air is relatively dry, specifically
The time interval of derusting by sandblasting and brush primary coat is subject to sandblasting rear surface without floating rust.
4）Corrosion protective lining is constructed：
After desulfurization inner wall of tower whole brush primary coat, start corrosion protective lining construction, anti-corrosion material is selected：Vinylite resin 850#,
Medium temperature, high-temperature scale clay, platinum alkali-free glass fiber cloth.
4.1）1 is pressed with vinylite and talcum powder:3 ratio is mixed into putty, and pad in tower body and weld seam is recessed
At convex injustice, burnishing surface or arcwall face are uniformly smeared into, waits for corrosion protective lining construction.
4.2）The reconciliation of lining material, is mixed in a certain ratio vinylite and glass flake plasticine, wherein temperature
At 35 DEG C -25 DEG C, the ratio of vinylite and glass flake plasticine is 5:1, temperature is at 24 DEG C -15 DEG C, ethylene
The ratio of base resin and glass flake plasticine is 8:1, temperature is at 14 DEG C -10 DEG C, vinylite and glass flake glue
The ratio of mud is 10:1, temperature is at 10 DEG C -- and at 10 DEG C, then dosage≤5% of glass flake adds 3 parts of curing agent, promote
Into 2 parts of agent, with blender adequately stir evenly for use after reconciliation.
4.3）Lining construction main points are rolled above-mentioned lining material brushing with hair in base coating surface, ready glass
In fiber cloth tiling, then with hair rolling lining material is dipped, gently roller coating is on glass fabric, then with plastic scrapers glass fibers
The removal of bubbles of Wei Bunei, according to said method sets gradually multilayer woven glass fabric, until anti-corrosion thickness reaches 2 millimeters.
4.4）After anti-corrosion reaches thickness, in desulfurizing tower at downward 1 meter of the bottom surface of spray beam, continue brushing 3 on erosion resistant coating
The silicon carbide wearing layer of millimeter；More than desulfurization tower bottom and bottom at 2.5 meters, continue to brush 1 millimeter silicon carbide on erosion resistant coating
Wearing layer；Vinylite and carborundum powder are pressed 3 by the reconciliation of silicon carbide wearing layer:1 ratio mixing, then addition solidification
2 parts of 3 parts of agent and accelerating agent, are adequately stirred after reconciliation with blender.
5）It checks：
5.1）Visual examination：Visually, finger, which touches, checks the defects of confirming without bubbling, scar, bad hardening.
5.2）Earth detection：It is scanned, voltage 8000V, is confirmed without leakage comprehensively using high voltage low cycle electrical Spark plug optical fiber sensor instrument
Electricity.
5.3）Film thickness inspection:Using electro-magnetic thickness gage, per 2m2It surveys at one, confirms liner thickness.
6）Processing to defective work：
Thickness must be supplied at thickness deficiency；There are the places of protrusion, injurious surface mark, bubble to ensure thickness not less than minimum thickness
In the case of, it is polished with angle grinder；To electric leakage, bubbling, stripping place, to remove after defect by repairing main points repairing.
As shown in Figure 1, the structure of desulfurization inner wall of tower includes the desulfurization tower wall 1 set gradually, primary coat after the completion of anticorrosive construction
Layer 2, erosion resistant coating 3, silicon carbide wearing layer 4.
Claims (5)
1. a kind of glass flake composite anti-corrosive technique of desulfurization by lime gypsum method tower, which is characterized in that include the following steps：
1）Inspection needs corrosion-resistant surface
Weld seam processing on the component of desulfurizing tower is in the arc-shaped, and weld seam is continuous, and keeps smooth with the surface that connects；
Surface soldered defect is filled up by welding again, keeps smooth with neighbouring surface；
All welding slags on surface are removed, by the way of cutting, are finally polishing to smooth；
The turning of all liners and edge processing are in the arc-shaped；
2）Sandblasting
Blast media selects quartz sand, quartz sand that should clean drying, and compressed air removes oil removing, dirt and moisture content, compressed air
For pressure control in 0.6~1Mpa, sandblasting reaches Sa2.5 grades,
The surface of primary coat is brushed, near zone is needed until the region of brush primary coat is tack-free, then carries out sandblasting；
It to be cleaned after sandblasting, fully remove dust；
3）Brush primary coat
With hair rolling or hairbrush uniformly brushed, to accomplish no siltation, sagging or thickness it is irregular phenomenon generation；
4）Corrosion protective lining is constructed
4.1）1 is pressed with vinylite and talcum powder:3 ratio is mixed into putty, not pad in tower body and weld seam bumps
Flat place, uniformly smears into burnishing surface or arcwall face, waits for corrosion protective lining construction,
4.2）The reconciliation of lining material, is mixed in a certain ratio vinylite and glass flake plasticine, temperature 35 DEG C-
At 25 DEG C, the ratio of vinylite and glass flake plasticine is 5:1, temperature at 24 DEG C -15 DEG C, vinylite and
The ratio of glass flake plasticine is 8:1, temperature is at 14 DEG C -10 DEG C, the ratio of vinylite and glass flake plasticine
It is 10:1, temperature is at 10 DEG C -- and at 10 DEG C, then dosage≤5% of glass flake adds 3 parts of curing agent, accelerating agent 1-5
Part, with blender adequately stir evenly for use after reconciliation,
4.3）Lining construction main points are rolled above-mentioned lining material brushing with hair in primed surface, ready glass fabric
In tiling, then with hair rolling lining material is dipped, gently roller coating is on glass fabric, then with plastic scrapers in glass fabric
Removal of bubbles, according to said method set gradually multilayer woven glass fabric, until anti-corrosion thickness reaches 1.8-2.2 millimeters,
4.4）After anti-corrosion reaches thickness, in desulfurizing tower at downward 1 meter of the bottom surface of spray beam, continue to brush 2-3 millis on erosion resistant coating
The silicon carbide wearing layer of rice；More than desulfurization tower bottom and bottom at 2.5 meters, it is resistance to continue 1 millimeter silicon carbide of brushing on erosion resistant coating
Grind layer；Vinylite and carborundum powder are pressed 3 by the reconciliation of silicon carbide wearing layer:1 ratio mixing, then adds curing agent 3
1-3 parts of part and accelerating agent, are adequately stirred after reconciliation with blender；
5）It checks：
5.1）Visual examination：Visually, finger, which touches, checks confirmation without bubbling, scar, the undesirable defect of hardening；
5.2）Earth detection：It is scanned, voltage 8000V, is confirmed without electric leakage comprehensively using high voltage low cycle electrical Spark plug optical fiber sensor instrument；
5.3）Film thickness inspection:Using electro-magnetic thickness gage, per 2m2It surveys at one, confirms liner thickness；
6）Processing to defective work：
Thickness must be supplied at thickness deficiency；There are the places of protrusion, injurious surface mark, bubble to ensure thickness not less than minimum thickness
In the case of, it is polished with angle grinder；To electric leakage, bubbling, stripping place, to remove after defect by repairing main points repairing.
2. the glass flake composite anti-corrosive technique of desulfurization by lime gypsum method tower according to claim 1, which is characterized in that
Interior reinforcing member that desulfurizing tower includes, additional firmware, support element all should be welded to tower wall before lining construction starts.
3. the glass flake composite anti-corrosive technique of desulfurization by lime gypsum method tower according to claim 1, which is characterized in that
Provisional support or hanging ring needs to remove before lining construction, and the region is polished smoothly.
4. the glass flake composite anti-corrosive technique of desulfurization by lime gypsum method tower according to claim 1, which is characterized in that
When the relative humidity of working region is more than 85%, sandblasting cannot carry out.
5. the glass flake composite anti-corrosive technique of desulfurization by lime gypsum method tower according to claim 1, which is characterized in that
If sandblasting rear surface is got rusty, region of getting rusty should be according to requiring sandblasting again.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810311646.XA CN108404642A (en) | 2018-04-09 | 2018-04-09 | The glass flake composite anti-corrosive technique of desulfurization by lime gypsum method tower |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810311646.XA CN108404642A (en) | 2018-04-09 | 2018-04-09 | The glass flake composite anti-corrosive technique of desulfurization by lime gypsum method tower |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN108404642A true CN108404642A (en) | 2018-08-17 |
Family
ID=63134860
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810311646.XA Pending CN108404642A (en) | 2018-04-09 | 2018-04-09 | The glass flake composite anti-corrosive technique of desulfurization by lime gypsum method tower |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108404642A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110961063A (en) * | 2019-12-16 | 2020-04-07 | 石狮华宝新材料工程有限公司 | Photocuring nano anticorrosive material for desulfurization system and construction process thereof |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107224858A (en) * | 2016-03-23 | 2017-10-03 | 上海建冶科技工程股份有限公司 | The wear-and corrosion-resistant technique of wet desulphurization equipment |
| CN206935341U (en) * | 2017-06-02 | 2018-01-30 | 山东恒科环保设备有限公司 | A kind of desulfurizing tower with anticorrosion antiwear tower body |
-
2018
- 2018-04-09 CN CN201810311646.XA patent/CN108404642A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107224858A (en) * | 2016-03-23 | 2017-10-03 | 上海建冶科技工程股份有限公司 | The wear-and corrosion-resistant technique of wet desulphurization equipment |
| CN206935341U (en) * | 2017-06-02 | 2018-01-30 | 山东恒科环保设备有限公司 | A kind of desulfurizing tower with anticorrosion antiwear tower body |
Non-Patent Citations (1)
| Title |
|---|
| 暴力小伙在新疆: "脱硫塔防腐施工方案 https://wenku.baidu.com/view/9a4b7c70ec3a87c24128c43e.html?fr=search", 《百度文库》 * |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110961063A (en) * | 2019-12-16 | 2020-04-07 | 石狮华宝新材料工程有限公司 | Photocuring nano anticorrosive material for desulfurization system and construction process thereof |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN104741741B (en) | A kind of pipe pipe docking all positon automatic TIG welding technique of continuous pipe | |
| CN101822936A (en) | High-temperature scale anticorrosion construction method for heat-engine plant desulfurizer | |
| CN101797676B (en) | Repair and surface protection process of desulfuration recycle pump | |
| CN105256268A (en) | Construction process for anticorrosion composite coating of steel structure | |
| CN108499347A (en) | The glass flake composite anti-corrosive technique of ammonia process desulfuration tower | |
| CN111661504B (en) | Anti-corrosion oil tank and production method thereof | |
| CN109702562B (en) | Cold rolling furnace roller coating renovation treatment method | |
| CN107442369A (en) | Oil paint coating construction method under hot and humid environment | |
| CN108404642A (en) | The glass flake composite anti-corrosive technique of desulfurization by lime gypsum method tower | |
| CN104841626A (en) | Repairing method of metal workpiece | |
| CN108906554A (en) | A kind of rolling stock coating layer structure and coating process | |
| CN204353153U (en) | Pipe interior uses the device of air force cleaning and coating | |
| CN103937368B (en) | A kind of anticorrosion antiwear patching material | |
| CN208742240U (en) | A kind of carbide slag high-efficiency desulfurization system | |
| CN105109853B (en) | Large-scale storage tank lining plastic anticorrosion process | |
| CN105586561A (en) | Steel structure anti-corrosion process | |
| CN208810511U (en) | A kind of rolling stock coating layer structure | |
| CN106883734A (en) | A kind of application of resin ceramic material in the antiseptic project of wet desulphurization absorption tower | |
| CN103924752B (en) | Nano wearproof pottery composite protective construction method | |
| CN108097007A (en) | Ammonia desulfurizing process inside lining anti-corrosive technology | |
| CN103802381A (en) | Repairation method of anticorrosion and abrasion-resistant lining | |
| CN105331924A (en) | Corrosion resistance technology of steel structure | |
| CN105331923A (en) | Steel structure anticorrosive process | |
| CN110860448A (en) | Novel polyurethane coating process for nodular cast iron pipe fitting | |
| CN215981451U (en) | Joint of slurry circulating pump of desulfurization absorption tower |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20180817 |
|
| RJ01 | Rejection of invention patent application after publication |