CN107478086A - A kind of method for repairing and mending of tube plate of graphite heat exchanger - Google Patents
A kind of method for repairing and mending of tube plate of graphite heat exchanger Download PDFInfo
- Publication number
- CN107478086A CN107478086A CN201710791465.7A CN201710791465A CN107478086A CN 107478086 A CN107478086 A CN 107478086A CN 201710791465 A CN201710791465 A CN 201710791465A CN 107478086 A CN107478086 A CN 107478086A
- Authority
- CN
- China
- Prior art keywords
- heat exchanger
- repairing
- mending
- tube plate
- graphite heat
- 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
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
- F28F9/00—Casings; Header boxes; Auxiliary supports for elements; Auxiliary members within casings
- F28F9/02—Header boxes; End plates
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08F—MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS
- C08F114/00—Homopolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by a halogen
- C08F114/18—Monomers containing fluorine
- C08F114/26—Tetrafluoroethene
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
- C09J11/00—Features of adhesives not provided for in group C09J9/00, e.g. additives
- C09J11/02—Non-macromolecular additives
- C09J11/04—Non-macromolecular additives inorganic
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
- C09J11/00—Features of adhesives not provided for in group C09J9/00, e.g. additives
- C09J11/02—Non-macromolecular additives
- C09J11/06—Non-macromolecular additives organic
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
- C09J127/00—Adhesives based on homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by a halogen; Adhesives based on derivatives of such polymers
- C09J127/02—Adhesives based on homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by a halogen; Adhesives based on derivatives of such polymers not modified by chemical after-treatment
- C09J127/12—Adhesives based on homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by a halogen; Adhesives based on derivatives of such polymers not modified by chemical after-treatment containing fluorine atoms
- C09J127/18—Homopolymers or copolymers of tetrafluoroethene
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Engineering & Computer Science (AREA)
- Inorganic Chemistry (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Health & Medical Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Medicinal Chemistry (AREA)
- Polymers & Plastics (AREA)
Abstract
The invention discloses a kind of method for repairing and mending of tube plate of graphite heat exchanger, comprise the following steps：S1, the preparation of polytetrafluoroethylene (PTFE) performed polymer colloidal sol；S2, graphite powder and polytetrafluoroethylene (PTFE) performed polymer colloidal sol are mixed, add curing agent, after stirring, obtain repair liquid；S3, repair liquid B is injected into crack or the through hole of tube sheet, and mend is caught with sheet glass bag；S4, with blast heating or infrared heating, treat its solidification, after cooling, sheet glass is removed, the repair liquid of solidification is respectively formed bound edge at the both ends of crack or through hole, graphite powder and tube plate of graphite heat exchanger close adhesion in bound edge, so as to complete the mending course of tube plate of graphite heat exchanger.Method for repairing and mending provided by the invention has the advantages that to repair that the time is short, structural stability is high after repairing, good airproof performance after repairing, quickly resumed production beneficial to equipment is made, so as to improve operating efficiency, and repair liquid corrosion resistance is strong, high temperature resistant, and then improve the service life of the tube plate of graphite heat exchanger after repairing.
Description
Technical field
The present invention relates to tube plate of graphite heat exchanger technical field, more particularly to a kind of repairing side of tube plate of graphite heat exchanger
Method.
Background technology
Traditional tube-type graphite heat exchanger, graphite tracheal rupture or tube sheet damage pass through the method for bonding repairing：
One end of tubesheet holes on tube sheet is connected with graphite-pipe, and bonding graphite in the corresponding other end blocks up rod, but this side
Method, abutting edge is inconvenient to be heat-treated after bonding, i.e., enabled to be heat-treated, the cycle of heat treatment is also longer.According to country
The clay bonding of Standard graphite has to pass through heat treatment, and otherwise adhesive strength does not reach requirement.
Thus prior art proposes various methods for the deficiency of bonding method, as the A of patent CN 102435095 are proposed
A kind of new Machine Repairing method, repairing graphite tube plate is carried out using screw thread plug-hole, high compared to traditional bonding repairing intensity,
Time is fast, is advantageous to make equipment quickly resume production, so as to improve operating efficiency.
But the screw intensity on graphite is poor, run into stress difference it is larger in the case of, easily continue to damage, because machine
Tool patching is also not perfect in every way, and bonding method is also and non-fully inadvisable, especially the good airproof performance of bonding method, will not be right
Heat exchange efficiency adversely affects.How bonding method is improved, improve its heat resistance, resistance to pressure, be current tube plate of graphite heat exchanger
Repairing technique first has to solve the problems, such as.
The content of the invention
The invention aims to solve shortcoming present in prior art, and a kind of graphite heat exchanger pipe proposed
A kind of method for repairing and mending of tube plate of graphite heat exchanger of method for repairing and mending of plate.
To achieve these goals, present invention employs following technical scheme：
A kind of method for repairing and mending of tube plate of graphite heat exchanger, comprises the following steps：
S1, the preparation of polytetrafluoroethylene (PTFE) performed polymer colloidal sol：Tetrafluoroethylene monomer is placed in reactor, adds solvent, anti-
Auxiliary agent, catalyst and additive are answered, heating, stirs and pressurizes, prepare polytetrafluoroethylene (PTFE) performed polymer Sol A；
S2, graphite powder and polytetrafluoroethylene (PTFE) performed polymer colloidal sol are mixed, add curing agent, after stirring, repaired
Liquid B；
S3, repair liquid B is injected into crack or the through hole of tube sheet, and mend is caught with sheet glass bag；
S4, with blast heating or infrared heating, its solidification is treated, after cooling, remove sheet glass, the repair liquid of solidification is being split
The both ends of seam or through hole are respectively formed bound edge, the graphite powder in bound edge and tube plate of graphite heat exchanger close adhesion, so as to complete graphite
The mending course of heat exchanger tube sheet.
Preferably, in the S1, the temperature range of heating is 40~80 DEG C, and the pressure limit of pressurization is 3~26MPa.
Preferably, in the S1, the rotating speed of stirring is specially 150-750r/min.
Preferably, in the S1, solvent is water, and catalyst is any one in inorganic peroxysulfate, organic peroxide
Kind, reaction promoter is the hydrochloric acid solution that concentration is 10-36%, and additive is anion surfactant.
Preferably, in the S1, pH scopes are 4-6.5 in reactor.
Preferably, in the S1, the molecular weight of polytetrafluoroethylene (PTFE) is not less than 250,000.
Preferably, in the S2, repair liquid B viscosity is 0.5-5Pas.
Preferably, in the S3, sheet glass is by ultrasonic clean and drying process.
Preferably, in the S4, the temperature of heating is 60-100 DEG C.
Preferably, in the S4, curing agent is specially vinyl triamine, aminoethyl piperazine, amide groups amine, diaminourea
One or both of diphenyl methane, m-phenylene diamine (MPD) mix.
Compared with prior art, the beneficial effects of the invention are as follows：
1. the invention provides a kind of preparation method of polytetrafluoroethylene (PTFE) performed polymer colloidal sol, and it is mixed with graphite powder,
And curing agent is added, repair liquid is made, repair liquid corrosion resistance is strong, high temperature resistant, so as to improve the graphite heat exchanger after repairing
The service life of tube sheet.
2. repair liquid is injected into crack or the through hole of tube sheet by the present invention, and catches mend with sheet glass bag, with drum
Wind heats or infrared heating, treats its solidification, after cooling, removes sheet glass, the repair liquid of solidification is equal at the both ends of crack or through hole
Bound edge is formed, the graphite powder in bound edge and tube plate of graphite heat exchanger close adhesion, so as to complete the repairing of tube plate of graphite heat exchanger
Process.There is substantial amounts of graphite powder in repair liquid, improve the structural strength after crack repairing, and the repairing time is short, favorably
In making equipment quickly resume production, so as to improve operating efficiency.
3. present invention firstly provides the method for repairing and mending that mend is connect with sheet glass bag, do not glued with glass after repair liquid solidification
Close, can remove easily, the bound edge of formation is beneficial to the internal structure in protection crack, graphite powder and graphite heat exchanger pipe in bound edge
Plate close adhesion, this method are particularly suitable for use in impregnated graphite, and the impregnated graphite especially impregnated with polyflon, it is repaiied
The sealing of benefit is very good.
Embodiment
The technical scheme in the embodiment of the present invention is clearly and completely described below, it is clear that described implementation
Example only part of the embodiment of the present invention, rather than whole embodiments.
Embodiment 1：
A kind of method for repairing and mending of tube plate of graphite heat exchanger, comprises the following steps：
S1, the preparation of polytetrafluoroethylene (PTFE) performed polymer colloidal sol：Tetrafluoride gas vinyl monomer is transported to reactor through excess pressure
In, a large amount of water are added, add sodium peroxydisulfate, neopelex, then the hydrochloric acid solution that concentration is 15%, regulation is added dropwise
PH is 4.5, is heated to 50 DEG C, is pressurized to 15MPa, and it is 250r/min to control speed of agitator, reacts 4h, prepares polytetrafluoroethyl-ne
Alkene performed polymer Sol A；
S2, graphite powder and polytetrafluoroethylene (PTFE) performed polymer colloidal sol are mixed, add aminoethyl piperazine, after stirring, obtain
Repair liquid B；
S3, repair liquid B is injected into the through hole of tube sheet, and mend is caught with sheet glass bag；
S4, with blast heating or infrared heating to 80 DEG C, its solidification is treated, after cooling, removes sheet glass, the repairing of solidification
Liquid is respectively formed bound edge at the both ends of through hole, the graphite powder in bound edge and tube plate of graphite heat exchanger close adhesion, so as to complete graphite
The mending course of heat exchanger tube sheet.
Repair liquid is used for repairing the macropore crack of tube plate of graphite heat exchanger by the present embodiment, and is carried out bag with sheet glass and connect,
Bound edge is formed at macropore both ends, and the graphite powder in bound edge and tube plate of graphite heat exchanger close adhesion, this method are particularly suitable for use in
Impregnated graphite, the impregnated graphite especially impregnated with polyflon, the sealing that it is repaired is very good, as to graphite
Dipping is general, and has substantial amounts of graphite powder in repair liquid, improves the structural strength after macropore crack repairing, repairs the time
It is short, be advantageous to make equipment quickly resume production, so as to improve operating efficiency.
Embodiment 2：
A kind of method for repairing and mending of tube plate of graphite heat exchanger, comprises the following steps：
S1, the preparation of polytetrafluoroethylene (PTFE) performed polymer colloidal sol：Tetrafluoride gas vinyl monomer is transported to reactor through excess pressure
In, a large amount of water are added, add sodium peroxydisulfate, neopelex, then the hydrochloric acid solution that concentration is 35%, regulation is added dropwise
PH is 6.5, is heated to 80 DEG C, is pressurized to 25MPa, and it is 500r/min to control speed of agitator, reacts 7h, prepares polytetrafluoroethyl-ne
Alkene performed polymer Sol A；
S2, graphite powder and polytetrafluoroethylene (PTFE) performed polymer colloidal sol are mixed, add aminoethyl piperazine, after stirring, obtain
Repair liquid B；
S3, repair liquid B is injected into the through hole of tube sheet, and mend is caught with sheet glass bag；
S4, with blast heating or infrared heating to 70 DEG C, its solidification is treated, after cooling, removes sheet glass, the repairing of solidification
Liquid is respectively formed bound edge at the both ends of through hole, the graphite powder in bound edge and tube plate of graphite heat exchanger close adhesion, so as to complete graphite
The mending course of heat exchanger tube sheet.
Repair liquid is used for repairing the gap of tube plate of graphite heat exchanger by the present embodiment, and is carried out bag with sheet glass and connect,
Gap both ends form bound edge, and the graphite powder in bound edge and tube plate of graphite heat exchanger close adhesion, this method are particularly suitable for use in
Impregnated graphite, the impregnated graphite especially impregnated with polyflon, the sealing that it is repaired is very good, as to graphite
Dipping is general, and has substantial amounts of graphite powder in repair liquid, improves the structural strength after gap repairing, repairs the time
It is short, be advantageous to make equipment quickly resume production, so as to improve operating efficiency.
The foregoing is only a preferred embodiment of the present invention, but protection scope of the present invention be not limited to
This, any one skilled in the art the invention discloses technical scope in, technique according to the invention scheme
And its inventive concept is subject to equivalent substitution or change, should all be included within the scope of the present invention.
Claims (10)
1. a kind of method for repairing and mending of tube plate of graphite heat exchanger, it is characterised in that comprise the following steps：
S1, the preparation of polytetrafluoroethylene (PTFE) performed polymer colloidal sol：Tetrafluoroethylene monomer is placed in reactor, adds solvent, reaction helps
Agent, catalyst and additive, heating, stir and pressurize, prepare polytetrafluoroethylene (PTFE) performed polymer Sol A；
S2, graphite powder and polytetrafluoroethylene (PTFE) performed polymer colloidal sol are mixed, add curing agent, after stirring, obtain repair liquid B；
S3, repair liquid B is injected into crack or the through hole of tube sheet, and mend is caught with sheet glass bag；
S4, with blast heating or infrared heating, its solidification is treated, after cooling, remove sheet glass, the repair liquid of solidification is in crack or logical
The both ends in hole are respectively formed bound edge, the graphite powder in bound edge and tube plate of graphite heat exchanger close adhesion, so as to complete graphite heat exchanger
The mending course of tube sheet.
2. the method for repairing and mending of a kind of tube plate of graphite heat exchanger according to claim 1, it is characterised in that in the S1, add
The temperature range of heat is 40~80 DEG C, and the pressure limit of pressurization is 3~26MPa.
3. the method for repairing and mending of a kind of tube plate of graphite heat exchanger according to claim 1, it is characterised in that in the S1, stir
The rotating speed mixed is specially 150-750r/min.
4. the method for repairing and mending of a kind of tube plate of graphite heat exchanger according to claim 1, it is characterised in that molten in the S1
Agent is water, and catalyst is any one in inorganic peroxysulfate, organic peroxide, and reaction promoter is that concentration is 10-36%
Hydrochloric acid solution, additive is anion surfactant.
A kind of 5. method for repairing and mending of tube plate of graphite heat exchanger according to claim 1 and claim 4, it is characterised in that
In the S1, pH scopes are 4-6.5 in reactor.
6. the method for repairing and mending of a kind of tube plate of graphite heat exchanger according to claim 1, it is characterised in that in the S1, gather
The molecular weight of tetrafluoroethene is not less than 250,000.
7. the method for repairing and mending of a kind of tube plate of graphite heat exchanger according to claim 1, it is characterised in that in the S2, repair
Fluid infusion B viscosity is 0.5-5Pas.
A kind of 8. method for repairing and mending of tube plate of graphite heat exchanger according to claim 1, it is characterised in that in the S3, glass
Glass piece is by ultrasonic clean and drying process.
9. the method for repairing and mending of a kind of tube plate of graphite heat exchanger according to claim 1, it is characterised in that in the S4, add
The temperature of heat is 60-100 DEG C.
A kind of 10. method for repairing and mending of tube plate of graphite heat exchanger according to claim 1, it is characterised in that in the S4, Gu
Agent is specially one kind in vinyl triamine, aminoethyl piperazine, amide groups amine, diaminodiphenyl-methane, m-phenylene diamine (MPD)
Or two kinds mix.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710791465.7A CN107478086A (en) | 2017-09-05 | 2017-09-05 | A kind of method for repairing and mending of tube plate of graphite heat exchanger |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710791465.7A CN107478086A (en) | 2017-09-05 | 2017-09-05 | A kind of method for repairing and mending of tube plate of graphite heat exchanger |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN107478086A true CN107478086A (en) | 2017-12-15 |
Family
ID=60604576
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710791465.7A Pending CN107478086A (en) | 2017-09-05 | 2017-09-05 | A kind of method for repairing and mending of tube plate of graphite heat exchanger |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107478086A (en) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101949656A (en) * | 2010-09-10 | 2011-01-19 | 南通京通石墨设备有限公司 | Method for repairing shell and tube graphite heat exchanger |
| CN102435090A (en) * | 2010-09-29 | 2012-05-02 | 南通五联品牌策划有限公司 | Method for repairing tube plate of shell and tube graphite heat exchanger |
| US20120199330A1 (en) * | 2011-02-04 | 2012-08-09 | Lockheed Martin Corporation | Staged graphite foam heat exchangers |
| CN102809318A (en) * | 2011-05-30 | 2012-12-05 | 南通三鑫碳素石墨设备有限公司 | Method for repairing tube plate of graphite heat exchanger |
| CN107042032A (en) * | 2017-03-06 | 2017-08-15 | 江苏省特种设备安全监督检验研究院南通分院 | Energy-saving graphite multitube smoke duster, its method of work and its repair method |
-
2017
- 2017-09-05 CN CN201710791465.7A patent/CN107478086A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101949656A (en) * | 2010-09-10 | 2011-01-19 | 南通京通石墨设备有限公司 | Method for repairing shell and tube graphite heat exchanger |
| CN102435090A (en) * | 2010-09-29 | 2012-05-02 | 南通五联品牌策划有限公司 | Method for repairing tube plate of shell and tube graphite heat exchanger |
| US20120199330A1 (en) * | 2011-02-04 | 2012-08-09 | Lockheed Martin Corporation | Staged graphite foam heat exchangers |
| CN102809318A (en) * | 2011-05-30 | 2012-12-05 | 南通三鑫碳素石墨设备有限公司 | Method for repairing tube plate of graphite heat exchanger |
| CN107042032A (en) * | 2017-03-06 | 2017-08-15 | 江苏省特种设备安全监督检验研究院南通分院 | Energy-saving graphite multitube smoke duster, its method of work and its repair method |
Non-Patent Citations (1)
| Title |
|---|
| 魏禄聚: ""列管式石墨换热器在盐酸生产中常见故障与处理"", 《氯碱工业》 * |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN106478940A (en) | Prepare continuous micro-reaction device, method and the product of meta-aramid resin | |
| CN111269414B (en) | Anti-yellowing polyamide resin and preparation method thereof | |
| CN104710973A (en) | Non-residue polymer fracturing fluid | |
| CN105522721A (en) | Preparation method of polytetrafluoroethylene heat-exchange tube | |
| CN107478086A (en) | A kind of method for repairing and mending of tube plate of graphite heat exchanger | |
| CN205009458U (en) | Conveyor belt vulcanizer | |
| CN111719311A (en) | Modified carbon fiber, modified carbon fiber reinforced epoxy resin composite material and preparation method thereof | |
| CN110256762A (en) | A kind of radiation crosslinking modified ECTFE thermal contraction casing tube and preparation method thereof | |
| CN108151547B (en) | Equipment and method for recycling waste heat of raw coke oven gas for benzene removal and ammonia distillation | |
| CN113698576A (en) | Preparation method of special epoxy resin for plugging oil pipe and casing of oil pumping well in oil field | |
| CN207628264U (en) | A kind of textile auxiliary storage facilities | |
| CN106675013B (en) | A kind of nylon 66 composite material and preparation method and application | |
| CN206104149U (en) | Steel pipe coating production line equipment | |
| CN111548734A (en) | Normal-temperature construction type non-cured rubber asphalt waterproof coating and preparation method thereof | |
| CN205561238U (en) | Be used for making energy -efficient constant temperature equipment of acrylic | |
| CN106893096A (en) | A kind of biological poly acid amides and preparation method thereof | |
| CN107501594B (en) | Method for foaming foamed plastic by using gel state nylon | |
| CN102153981A (en) | High-strength impact-resistant composite repairing material and preparation method thereof | |
| CN202757839U (en) | Slow strain rate stretching equipment | |
| CN207990009U (en) | A kind of asphalt glass wool cloth pipeline corrosion protection device | |
| CN207006568U (en) | One kind heating wheel | |
| CN110713713A (en) | High-performance glass fiber reinforced plastic composite material and preparation method thereof | |
| CN104877658B (en) | A kind of fracturing fluid prepared using highly mineralized formation brines and preparation method thereof | |
| CN208410692U (en) | A kind of heating of insulating tube extruder and cooling machine barrel | |
| CN114685846B (en) | Supercritical decrosslinking pretreatment rubber powder and rubber powder modified asphalt and preparation method thereof |
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: 20171215 |
|
| RJ01 | Rejection of invention patent application after publication |