CN108907607A - A kind of triamine device replacement bobbin carriage method - Google Patents
A kind of triamine device replacement bobbin carriage method Download PDFInfo
- Publication number
- CN108907607A CN108907607A CN201810553544.9A CN201810553544A CN108907607A CN 108907607 A CN108907607 A CN 108907607A CN 201810553544 A CN201810553544 A CN 201810553544A CN 108907607 A CN108907607 A CN 108907607A
- Authority
- CN
- China
- Prior art keywords
- tube sheet
- bobbin carriage
- tubulation
- outer barrel
- fused salt
- 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 26
- 238000003466 welding Methods 0.000 claims abstract description 29
- 238000012545 processing Methods 0.000 claims abstract description 11
- 238000004519 manufacturing process Methods 0.000 claims abstract description 6
- 238000010438 heat treatment Methods 0.000 claims abstract description 4
- 150000003839 salts Chemical class 0.000 claims description 32
- 239000000463 material Substances 0.000 claims description 16
- 238000010276 construction Methods 0.000 claims description 6
- 238000012797 qualification Methods 0.000 claims description 5
- QGZKDVFQNNGYKY-UHFFFAOYSA-N Ammonia Chemical compound N QGZKDVFQNNGYKY-UHFFFAOYSA-N 0.000 claims description 4
- 239000000956 alloy Substances 0.000 claims description 4
- 229910045601 alloy Inorganic materials 0.000 claims description 4
- 238000009434 installation Methods 0.000 claims description 4
- 238000003754 machining Methods 0.000 claims description 4
- 235000013372 meat Nutrition 0.000 claims description 4
- 238000005498 polishing Methods 0.000 claims description 4
- 238000012986 modification Methods 0.000 claims description 3
- 230000004048 modification Effects 0.000 claims description 3
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims description 2
- 229910000831 Steel Inorganic materials 0.000 claims description 2
- 229910021529 ammonia Inorganic materials 0.000 claims description 2
- 238000012550 audit Methods 0.000 claims description 2
- 229910052799 carbon Inorganic materials 0.000 claims description 2
- 238000004140 cleaning Methods 0.000 claims description 2
- 238000005520 cutting process Methods 0.000 claims description 2
- 238000013461 design Methods 0.000 claims description 2
- 238000001514 detection method Methods 0.000 claims description 2
- 229910052750 molybdenum Inorganic materials 0.000 claims description 2
- 239000011733 molybdenum Substances 0.000 claims description 2
- 238000009527 percussion Methods 0.000 claims description 2
- 239000012466 permeate Substances 0.000 claims description 2
- 238000003908 quality control method Methods 0.000 claims description 2
- 239000002994 raw material Substances 0.000 claims description 2
- 239000010959 steel Substances 0.000 claims description 2
- 238000012360 testing method Methods 0.000 claims description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 2
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 claims 4
- 229910052759 nickel Inorganic materials 0.000 claims 2
- 238000005516 engineering process Methods 0.000 abstract description 4
- 238000012824 chemical production Methods 0.000 abstract description 2
- 238000009418 renovation Methods 0.000 abstract description 2
- 229920000877 Melamine resin Polymers 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000008676 import Effects 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- JDSHMPZPIAZGSV-UHFFFAOYSA-N melamine Chemical compound NC1=NC(N)=NC(N)=N1 JDSHMPZPIAZGSV-UHFFFAOYSA-N 0.000 description 1
- 238000012546 transfer Methods 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23P—METAL-WORKING NOT OTHERWISE PROVIDED FOR; COMBINED OPERATIONS; UNIVERSAL MACHINE TOOLS
- B23P11/00—Connecting or disconnecting metal parts or objects by metal-working techniques not otherwise provided for
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Butt Welding And Welding Of Specific Article (AREA)
Abstract
A kind of triamine device replacement bobbin carriage method is triamine chemical production technology renovation technique, it solves the problems, such as that bobbin carriage leakage causes reactor to be scrapped, it includes the production of new tube sheet and inner cylinder；The attachment weld of processing removal tube sheet and tubulation, removes old bobbin carriage；The processing of the inside and outside cylinder of bobbin carriage, outer barrel bevel end surface build-up welding and heat treatment；The group of new tube sheet and tubulation and inside and outside cylinder to and welding；Related check work.
Description
Technical field
The present invention relates to triamine chemical production technology renovation technique, especially a kind of triamine device replaces bobbin carriage method.
Background technique
Triamine device is the core equipment in melamine plant, and operating pressure is 8.0MPa, and operation temperature is 380
℃.Triamine device is heterogeneous, complete mixing flow formula reactor, and structure is complicated, manufacture difficulty is big.Bayonet tube is by inside and outside heat transfer tube group
At pipe one end is fixed on bobbin carriage, and the other end can adapt to the occasion that the temperature difference is big, pressure is high with free extension.Bayonet tube is adopted
With vertical structure, be conducive to Natural Circulation.Triamine device is always external monopolization technology, and all triamine devices are all to rely on
Import, the order cycle time is long, holds at high price, and the price of whole reactor is up to 60,000,000 yuan, and internals tube bank price also reaches
14000000 yuan.Fused salt bobbin carriage is located at the bottom of reactor tube bank, and operation temperature is higher, often more first occurs leakage than tubulation and leads
Entire tube bank is caused to scrap.
Summary of the invention
The purpose of the present invention is to provide investing a kind of less, quick triamine device to replace bobbin carriage method, solve
The problem of bobbin carriage leakage causes reactor to be scrapped, the object of the present invention is achieved like this, it includes new tube sheet and inner cylinder
Production；The attachment weld of processing removal tube sheet and tubulation, removes old bobbin carriage；The processing of the inside and outside cylinder of bobbin carriage, outer barrel groove
End face built-up welding and heat treatment；The group of new tube sheet and tubulation and inside and outside cylinder to and welding；Related check work.
Meaning of the present invention is that this method is suitable for triamine device after in a few years running, and the failure of fused salt bobbin carriage is let out
Leakage and tubulation performance it is also relatively good in the case where, replacement bobbin carriage makes entire reactor restore function, reaches and reduces equipment investment
Purpose；Accordingly extend the service life of triamine device；After triamine device replaces bobbin carriage, through operation after a period of time, equipment
Stable, indices all in the range of requiring, can satisfy production needs, work well.
Detailed description of the invention
Fig. 1 is the schematic diagram that triamine device replaces bobbin carriage, 1, outer barrel 2, inner cylinder 3, new tube sheet 4, column in figure
Pipe.
Specific embodiment
Fused salt bobbin carriage includes outer barrel 1, inner cylinder 2, new tube sheet 3, tubulation 4, top closure in the present invention, new tube sheet 3 with
Tubulation 4 is welded using intensity, and the material of tubulation 4 is nickel-base alloy, and material trademark is 622 UNS N10276 of SB；New tube sheet 3 and
The material of inner cylinder 2 is nickel-base alloy, and material trademark is SB575 UNS N10276, and 1 material of outer barrel is chrome-molybdenum steel, material
The trade mark is 387 GR12 CL2 of SA；Replacement fused salt bobbin carriage is realized by the method for the tube sheet and inner cylinder of replacing fused salt bobbin carriage.
Its specific method and step is that the first step works out the technologies such as arrangement and method for construction, Construction Network Planning, quality control planning
Property file.
The production of the buying of second step raw material, tube sheet and inner cylinder；After tubulation processing is shortened, the installation site of new tube sheet
It moving down therewith, the connection type of new tube sheet and outer barrel is changed to butt weld by intrinsic fillet weld, it meets the requirements of the standard,
It is simultaneously the type of attachment for meeting new tube sheet and outer barrel, the outer diameter of new tube sheet increases 60mm, to improve tubesheet intensity, new tube sheet
Thickness is changed to 38.1mm by intrinsic 35mm.
Third step machining, removes the attachment weld of tube sheet and tubulation, removes fused salt bobbin carriage；It is removed using machining
The attachment weld of tubulation and fused salt bobbin carriage internal tube plate, working depth about 5mm, it is desirable that tubulation is loosened with tube sheet connecting portion.Weld seam
After loosening, it is detached from fused salt bobbin carriage and tubulation using hydraulic device, this process must not damage the outer barrel of tubulation and fused salt bobbin carriage,
During meat is welded in the connection for processing tubulation and tube sheet, the end of tubulation can be also processed simultaneously, and the tube sheet installation that look for novelty
Before, the pipe end of all tubulations is concordant, i.e., former tubulation can shorten, and shorten length and determined according to the actual state scene of equipment, right
The pipe end of tubulation is processed, it is desirable that as far as possible in one plane, difference in height is less than 1mm to the tubulation pipe end after processing.
4th step removes the old tube sheet of fused salt bobbin carriage, carries out polishing and retaining wall on slope, outer barrel to fused salt bobbin carriage outer barrel
Bevel end surface build-up welding and hidden lino removal, and inner cylinder and former flange group pair and welding；Using plasma cut or carbon arc
Gouge removes the old tube sheet of fused salt bobbin carriage, the outer barrel of fused salt bobbin carriage must not be damaged in cutting process；Polishing removal outer barrel with
The connection weldering meat of old tube sheet simultaneously carries out coherence check, confirms that it meets requirement；The outer barrel of fused salt bobbin carriage is carried out mechanical
Processing, outer barrel lower end 65mm range inside surfacing thickness 3mm nickel-base material reprocess out about 15 ° of single grooves, end face heap
Nickel-base material is welded, heap postwelding polish groove, and groove surfacing part carries out local stress believing heat treatment, prevents outer barrel
Modification.
The 5th new tube sheet of step and bobbin carriage inner cylinder group to and welding, it is desirable that new cylinder is overlapped with flange heart line；Welding process
It is middle that welding stress is reduced using percussion measure；100%RT is carried out to weld seam, criterion of acceptability is by II grade of NB/T47013.2-2015 conjunction
Lattice.
The 6th new tube sheet of step and tubulation group to and welding, the pipe end position of all tubulations guide head is installed after cleaning out,
Tube sheet and coupled inner cylinder be installed, new tube sheet is adjusted to suitable position, the laggard ranks pipe of pipe end protruded tube plate face 2mm with
The welding of new tube sheet, face of weld 100%PT；New tube sheet is measured in welding process, the deflection of new tube sheet is recorded,
Seek at least four orientation of measurement.
7th step outer barrel and new tube sheet group to and welding, measure and record outer barrel reference line variation feelings in welding process
Condition controls the modification amount of outer barrel, fixes before weldering to new tube sheet, taps the weldering to reduce welding stress to weld seam in welding process
Seam surface 100%PT.
8th step on-site hoisting, including floor tool, equipment and prefabricated component being hung to where equipment, construction knot
Tool, equipment are hung to ground by Shu Houzai.
The work of 9th step related check, new tube sheet and inside and outside cylinder attachment weld and new tube sheet and tubulation attachment weld into
Row 100%PT is examined, and by I grade of qualification of NB/T47013.5-2015,100%RT is carried out to the new weld seam of inner cylinder, by NB/
I grade of qualification of T47013.2-2015 standard；Compressive resistance 8kg/cm is carried out to fused salt bobbin carriage2The water pressure test, ammonia permeate 5kg/cm2,
Items detection must be qualified；Each nozzle orientation of fused salt bobbin carriage and former design after reparation is consistent.
Establishment, audit and the submission of tenth step completion information.
Claims (3)
1. a kind of triamine device replaces fused salt bobbin carriage method, it is characterized in that：Fused salt bobbin carriage includes outer barrel (1), inner cylinder
(2), new tube sheet (3), tubulation (4), top closure, new tube sheet (3) and tubulation (4) are welded using intensity, and the material of tubulation (4) is nickel
Based alloy, material trademark are 622 UNS N10276 of SB；The material of new tube sheet (3) and inner cylinder (2) is nickel-base alloy, material
The material trade mark is SB575 UNS N10276, and outer barrel (1) material is chrome-molybdenum steel, and material trademark is 387 GR12 CL2 of SA；It is logical
The method of the tube sheet and inner cylinder of crossing replacement fused salt bobbin carriage realizes replacement fused salt bobbin carriage.
2. a kind of triamine device described in claim 1 replaces fused salt bobbin carriage method, it is characterized in that：The first step works out construction party
The technical file such as case, Construction Network Planning, quality control planning；
The production of the buying of second step raw material, tube sheet and inner cylinder；After tubulation processing is shortened, the installation site of new tube sheet is therewith
It moves down, the connection type of new tube sheet and outer barrel is changed to butt weld by intrinsic fillet weld, meets the requirements of the standard, simultaneously
Outer diameter for the type of attachment for meeting new tube sheet and outer barrel, new tube sheet increases 60mm, to improve tubesheet intensity, new tube plate thickness
38.1mm is changed to by intrinsic 35mm；
Third step machining, removes the attachment weld of tube sheet and tubulation, removes fused salt bobbin carriage；Tubulation is removed using machining
With the attachment weld of fused salt bobbin carriage internal tube plate, working depth about 5mm, it is desirable that tubulation is loosened with tube sheet connecting portion.
3. after weld seam loosens, being detached from fused salt bobbin carriage and tubulation using hydraulic device, this process must not damage tubulation and fused salt pipe
The outer barrel of case, during meat is welded in the connection for processing tubulation and tube sheet, the end of tubulation can be also processed simultaneously, and be required
Before new tube sheet installation, the pipe end of all tubulations is concordant, i.e., former tubulation can shorten, and it is existing according to the actual state of equipment to shorten length
Field determines, processes to the pipe end of tubulation, it is desirable that as far as possible in one plane, difference in height is less than the tubulation pipe end after processing
1mm；
4th step removes the old tube sheet of fused salt bobbin carriage, carries out polishing and retaining wall on slope, outer barrel groove to fused salt bobbin carriage outer barrel
End face built-up welding and hidden lino removal, and inner cylinder and former flange group pair and welding；Using plasma cut or carbon arc air gouging,
The old tube sheet of fused salt bobbin carriage is removed, the outer barrel of fused salt bobbin carriage must not be damaged in cutting process；Polishing removal outer barrel and old pipe
The connection weldering meat of plate simultaneously carries out coherence check, confirms that it meets requirement；The outer barrel of fused salt bobbin carriage is machined,
Outer barrel lower end 65mm range inside surfacing thickness 3mm nickel-base material, reprocesses out about 15 ° of single grooves, end face built-up welding nickel
Sill, heap postwelding polish groove, and groove surfacing part carries out local stress believing heat treatment, prevents outer barrel from becoming
Type；
The 5th new tube sheet of step and bobbin carriage inner cylinder group to and welding, it is desirable that new cylinder is overlapped with flange heart line；It is adopted in welding process
Reduce welding stress with the measure of percussion；100%RT is carried out to weld seam, criterion of acceptability presses II grade of qualification of NB/T47013.2-2015；
The 6th new tube sheet of step and tubulation group to and welding, the pipe end position of all tubulations guide head is installed after cleaning out, install
Tube sheet and coupled inner cylinder, new tube sheet are adjusted to suitable position, the laggard ranks Guan Yuxin pipe of pipe end protruded tube plate face 2mm
The welding of plate, face of weld 100%PT；New tube sheet is measured in welding process, records the deflection of new tube sheet, it is desirable that extremely
Four orientation are measured less；
7th step outer barrel and new tube sheet group to and welding, measure and record outer barrel reference line situation of change in welding process,
The modification amount of outer barrel is controlled, new tube sheet is fixed before weldering, weld seam is tapped to reduce welding stress, weld seam table in welding process
Face 100%PT；
8th step on-site hoisting, including floor tool, equipment and prefabricated component being hung to where equipment, after construction
Tool, equipment are hung to ground again；
The work of 9th step related check, new tube sheet and inside and outside cylinder attachment weld and new tube sheet and tubulation attachment weld carry out
100%PT is examined, and by I grade of qualification of NB/T47013.5-2015,100%RT is carried out to the new weld seam of inner cylinder, by NB/T47013.2-
2015 I grade of standard qualifications；Compressive resistance 8kg/cm is carried out to fused salt bobbin carriage2The water pressure test, ammonia permeate 5kg/cm2, items detection must
It must be qualified；Each nozzle orientation of fused salt bobbin carriage and former design after reparation is consistent；
Establishment, audit and the submission of tenth step completion information.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810553544.9A CN108907607A (en) | 2018-06-01 | 2018-06-01 | A kind of triamine device replacement bobbin carriage method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810553544.9A CN108907607A (en) | 2018-06-01 | 2018-06-01 | A kind of triamine device replacement bobbin carriage method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN108907607A true CN108907607A (en) | 2018-11-30 |
Family
ID=64419968
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810553544.9A Pending CN108907607A (en) | 2018-06-01 | 2018-06-01 | A kind of triamine device replacement bobbin carriage method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108907607A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109974506A (en) * | 2019-03-12 | 2019-07-05 | 哈电集团（秦皇岛）重型装备有限公司 | A kind of removal component and tube bundle assembly take Guan Huanguan method |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4727635A (en) * | 1986-04-26 | 1988-03-01 | Balcke-Durr Aktiengesellschaft | Method of securing tubes between tube sheets |
| US5101559A (en) * | 1989-09-27 | 1992-04-07 | Framatome | Method for repairing a steam generator tube |
-
2018
- 2018-06-01 CN CN201810553544.9A patent/CN108907607A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4727635A (en) * | 1986-04-26 | 1988-03-01 | Balcke-Durr Aktiengesellschaft | Method of securing tubes between tube sheets |
| US5101559A (en) * | 1989-09-27 | 1992-04-07 | Framatome | Method for repairing a steam generator tube |
Non-Patent Citations (1)
| Title |
|---|
| 刘真云;杨运李;: "换热器管箱筒体与管板锁底接头泄漏分析及返修", 化工管理, no. 23, pages 1 - 4 * |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109974506A (en) * | 2019-03-12 | 2019-07-05 | 哈电集团（秦皇岛）重型装备有限公司 | A kind of removal component and tube bundle assembly take Guan Huanguan method |
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|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| WD01 | Invention patent application deemed withdrawn after publication | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20181130 |