CN1310327A - Shell-and-tube heat exchanger of stress corrosion resisting rare earth alloy steel - Google Patents
Shell-and-tube heat exchanger of stress corrosion resisting rare earth alloy steel Download PDFInfo
- Publication number
- CN1310327A CN1310327A CN 01111501 CN01111501A CN1310327A CN 1310327 A CN1310327 A CN 1310327A CN 01111501 CN01111501 CN 01111501 CN 01111501 A CN01111501 A CN 01111501A CN 1310327 A CN1310327 A CN 1310327A
- Authority
- CN
- China
- Prior art keywords
- heat exchanger
- tube
- steel
- stress corrosion
- shell
- 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
Images
Abstract
The present invention solves the problem of H2S and Cl stress corrosion of low-alloy Cr-Mo steel material heat exchanger. The technological scheme is that 08-09Cr2AlMoRE cold drawn steel pipe, tubesheet and plate are used as the main stress corrosion resisting material for heat exchanger, where the tubesheet material may be replaced by other similar Cr-Mo steel. Compared with heat exchanger of stainless steel, the present one has superior stress corrosion resistance, excellent heat conducting performance and lower cost. The persent invention may be used widely in petrochemical industry.
Description
Patent of the present invention relates to the heat exchanger field in the petrochemical plant.
Ubiquity H in petrochemical system
2S and Cl
-Stress corrosion phenomena, particularly be used as the heat exchanger of heat-transfer equipment, the common metal material is difficult to solve H
2S and Cl
-The stress corrosion problem, some enterprises at carbon steel (as 10
#, 16MnR etc.) adopt spraying under the material situation about cann't be solved, and coating comes off under the high temperature and the effect of washing away easily, its anticorrosion effect and not obvious, and stainless steel not only price is high but also can not solve the stress corrosion problem because chlorion 〉=10PPm in the solution medium and H
2Just can produce the sensitiveness of stress corrosion during S 〉=100PPm.In addition, stainless heat conductivility is relatively poor, is 1/3 of carbon steel and low alloy steel only generally, and when selecting stainless steel material for use, heat exchange area that also must the heat exchanging device carries out dilatation, and not only efficient is low, but also additionally increases cost of investment.
The object of the present invention is to provide a kind of not only anticorrosion stress-resistant but also anti-homogeneous corrosion, and the heat exchanger product of the cheap relatively stress corrosion resistant of price.
The present invention implements by following technical solution:
I have reported patent " special steel pipe of kinds of anti-sulfur corrosion " (number of declaring 98121615.3) in 29,98 on September, 12Cr2AlMoV wherein has special anti-stress corrosion performance, improve again on this basis and developed the rare earth alloy steel of 08～09Cr2AlMoRE, and declared patent of invention.The characteristics of patent of the present invention are exactly to be the anti-corrosion material making heat exchanger tube and the housing of main body with the solid drawn tube of 08～09Cr2AlMoRE and sheet material.Concrete scheme is: allly walk H in tube side and shell side
2S and Cl
-On the heat exchanger that all can use 08～09Cr2AlMoRE cold drawing steel tube to make under the condition of corrosive medium, general concentration conditions is Cl
-〉=10PPm, H
2S 〉=100PPm.The tube sheet of heat exchanger tube can select for use 16Mn to forge corroding not too under the serious situation, under the heavier situation of corrosion, should select material for use with the tubing coupling, or the close material of resistant component, as low-alloy chrome-molybdenum steel such as 12Cr2Mol, 12CrlAlMoV, 15CrMoV, 15CrMo is forging, and cylindrical shell is with 08～09Cr2AlMoRE steel board.The decay resistance of the selected steel grade 08～09Cr2AlMoRE of the technical program is as follows:
1. the decay resistance of several steel contrast:
Table 1 homogeneous corrosion test contrast
| Concentration of medium, temperature, soak time | 08～09Cr2AlMoRE | ??12Cr2AlMoV | ?? |
| 3％HCl????80℃??24h | ????5.17 | ????7.68 | ????12.7 |
| 50％H 2SO 4?70℃??6h | ????17.0 | ????25.0 | ????37.0 |
Annotate: corrosion rate unit is: mg/cm
2h
Table 2 H
2The corrosion test contrast (soak time 144h) of S medium simulated condition
2. anti-H
2The S stress corrosion performance
| Catalysis system cat head oil gas H 2S:979ppm temperature: 100 ℃ | 08～09Cr2AlMoRE | ??12Cr2AlMoV | ??08Cr2AlMo | ????10 #Steel |
| Corrosion rate: V 10 -2mg/cm 2h | ????1.58 | ????2.28 | ????2.42 | ????9.28 |
Table 3
| ?H 2S 720h tests σ th | Standard σ th | Remarks | |
| ??08～09Cr2AlMoRE | ????0.75σ s | ????≥0.45 | Press GB4157-84 |
The perseverance of the stress corrosion resistant of the 08～09Cr2AlMoRE critical tensile break stress value of loading is far above the σ that stipulates among the NACE MRO175-97 of NACE
Th〉=0.45 σ
sRequirement is adapted at anti-H fully
2Use in the S stress corrosion environment.
Be described further below in conjunction with diagram:
Fig. 1: be the floating head type segmental baffle board heat exchangers, wherein part (1) is a housing, and part (2) is a pipe nipple, and part (3) is envelope
Head, part (4-0) is tube bank.In the part (4), (4-1) being tube sheet, (4-2) is heat exchanger tube, (4-3) is bow
The shape deflection plate.
Fig. 2: be the floating head type deflection rod heat exchanger, wherein part (1) is a housing, and part (2) is a pipe nipple, and part (3) is an end socket,
Part (4-0) is tube bank.In the part (4), (4-1) being tube sheet, (4-2) is heat exchanger tube, (4-3) is rod baffle.
Fig. 3: be floating head type U type heat exchange of heat pipe, wherein part (1) is a housing, and part (2) is a pipe nipple, and part (3) is an end socket,
Part (4-0) is tube bank.In the part (4), (4-1) being tube sheet, (4-2) is U type heat exchanger tube, (4-3) is
Deflection plate.
Fig. 4: be fixed tube-sheet exchanger, wherein part (1) is a housing, and part (2) is a pipe nipple, and part (3) is an end socket, part
(4-0) for tube bank, in the part (4), (4-1) being tube sheet, (4-2) is heat exchanger tube, (4-3) is deflection plate.
The heat exchanger tube of making of 08～09Cr2AlMoRE has multiple structure: 1. floating head type segmental baffle type tube bank, among Fig. 1 (4-0), it is by tube sheet (4-1), heat exchanger tube (4-2), arc baffling
Plate formations such as (4-3), its described heat exchanger tube (4-2) is 08～09Cr2AlMoRE, tube sheet (4-1) material is
08～09Cr2AlMoRE also can be 16Mn forging, 12Cr2Mol, 12CrlAlMoV, 15CrMoV, 15CrMo
Deng, the deflection plate material is 08～09Cr2AlMoRE.2. floating head type rod baffle type heat exchanger tube bank, among Fig. 2 (4-0), it is by tube sheet (4-1), heat exchanger tube (4-2), rod baffle
Formation such as (4-3), its described heat exchanger tube (4-2) is 08～09Cr2AlMoRE, tube sheet (4-1) material is
08～09Cr2AlMoRE also can be 16Mn forging, 12Cr2Mol, 12CrlAlMoV, 15CrMoV, 15CrMo
Can be with Q235-A or 0Cr13 Deng, rod baffle material.3. floating head type U type heat exchange of heat pipe tube bank, among Fig. 3 (4-0), it is by tube sheet (4-1), U type pipe (4-2), deflection plate (4-3)
Etc. formation, its described heat exchanger tube (4-2) is 08～09Cr2AlMoRE, and tube sheet (4-1) material is 08～09Cr2AlMoRE,
Also can be 16Mn forging, 12Cr2Mol, 12Cr1AlMoV, 15CrMoV, 15CrMo etc.4. fixed tube-sheet exchanger tube bank, among Fig. 4 (4-0), it is by fixed tube sheet (4-1), heat exchanger tube (4-2), deflection plate
(4-3) and cylindrical shell (1) constitute, tube sheet (4-1) and cylindrical shell 1 are welded, heat exchanger tube (4-2) is
08～09Cr2AlMoRE, tube sheet (4-1) material is with 08～09Cr2AlMoRE, also can use 12Cr2Mol,
Chrome-molybdenum steel such as 12CrlAlMoV, 15CrMoV, 15CrMo system.
When having corrosive medium to exist in the shell side operation medium, housing (1), pipe nipple (2), end socket (3) material also should use 08～09Cr2AlMoRE, sheet metal thickness is with reference to the design considerations of 16MnR among the GB151-89 " steel tube shell type heat exchanger ", and postwelding should carry out whole tempering heat treatment.Should adopt weld preheating before the cylindrical shell of 08～09Cr2AlMoRE steel and tube head are welded in, the SR that postwelding eliminates stress handles, and preheat temperature is 200～250 ℃, and temperature is 680～730 ℃.
Because 08～09Cr2AlMoRE has good anti-stress corrosion performance, the tube sheet material is except that the available material that matches, the close chrome-molybdenum steel of also available chemical composition is the forging material, therefore be the heat exchanger of main body anti-corrosion material with 08～09Cr2AlMoRE heat exchanger tube, anti-homogeneous corrosion is better than general carbon steel, anti-stress corrosion performance is better than～as stainless steel, have higher cost performance, its economic benefit and social benefit are obvious, can be widely used in the corrosive environment in the petrochemical plant.
Claims (3)
1. shell-and-tube heat exchanger, it is made of housing (1), pipe nipple (2), end socket (3) and tube bank (4-0), it is characterized in that: described bright body (1), pipe nipple (2), end socket (3) are the sheet material of 08～09Cr2AlMoRE, restrain the forging of (4-0) used tube sheet (4-1) with 08～09Cr2AlMoRE, heat exchanger tube (4-2) is the cold drawing steel tube of 08～09Cr2AlMoRE, and deflection plate (4-3) is 08～09Cr2AlMoRE steel board.
2. as claims 1 described heat exchanger, it is characterized in that: tube bank (4-0) used tube sheet (4-1) material can also be the forging manufacturing with 12Cr2Mol, 12CrlAlMoV, 15CrMoV or 15CrMo low-alloy chrome-molybdenum steel.
3. as claims 1 described heat exchanger, it is characterized in that: should adopt 200～250 ℃ of preheatings before the cylindrical shell of 08～09Cr2AlMoRE steel and tube head are welded in, postwelding is with 680～730 ℃ of temper that eliminate stress.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 01111501 CN1310327A (en) | 2001-03-14 | 2001-03-14 | Shell-and-tube heat exchanger of stress corrosion resisting rare earth alloy steel |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 01111501 CN1310327A (en) | 2001-03-14 | 2001-03-14 | Shell-and-tube heat exchanger of stress corrosion resisting rare earth alloy steel |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN1310327A true CN1310327A (en) | 2001-08-29 |
Family
ID=4659072
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 01111501 Pending CN1310327A (en) | 2001-03-14 | 2001-03-14 | Shell-and-tube heat exchanger of stress corrosion resisting rare earth alloy steel |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1310327A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103361558A (en) * | 2013-05-09 | 2013-10-23 | 内蒙古包钢钢联股份有限公司 | Rare-earth-containing wet-H2S-corrosion-resistant T95 steel-grade oil well pipe and production method thereof |
| CN108302962A (en) * | 2015-12-01 | 2018-07-20 | 青岛海尔空调电子有限公司 | Partition board and building method, straight tube double-flow dry type case tube heat exchanger and building method |
| CN109943688A (en) * | 2019-04-03 | 2019-06-28 | 上海飞挺管业制造有限公司 | WP11 plate of material butt welding low-temperature impact-resistant technique |
-
2001
- 2001-03-14 CN CN 01111501 patent/CN1310327A/en active Pending
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103361558A (en) * | 2013-05-09 | 2013-10-23 | 内蒙古包钢钢联股份有限公司 | Rare-earth-containing wet-H2S-corrosion-resistant T95 steel-grade oil well pipe and production method thereof |
| CN103361558B (en) * | 2013-05-09 | 2015-09-16 | 内蒙古包钢钢联股份有限公司 | A kind of containing rare earth moisture-proof H 2the T95 steel grade oil well casing of S corrosion and production method thereof |
| CN108302962A (en) * | 2015-12-01 | 2018-07-20 | 青岛海尔空调电子有限公司 | Partition board and building method, straight tube double-flow dry type case tube heat exchanger and building method |
| CN108302962B (en) * | 2015-12-01 | 2020-01-17 | 青岛海尔空调电子有限公司 | Partition plate and construction method, straight pipe double-flow-path dry type shell and tube heat exchanger and construction method |
| CN109943688A (en) * | 2019-04-03 | 2019-06-28 | 上海飞挺管业制造有限公司 | WP11 plate of material butt welding low-temperature impact-resistant technique |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| WO2006032922A8 (en) | A heat exchanger | |
| CN103370152B (en) | The pipe-end straightening method of the seamless pipe formed by high Cr stainless steel | |
| CN1310327A (en) | Shell-and-tube heat exchanger of stress corrosion resisting rare earth alloy steel | |
| CN1904120A (en) | Steel for high temperature resistant anticorrosion heat insulating oil pipe and its manufacturing method | |
| CN102409204A (en) | Rare earth (RE) aluminium alloy material for pressure vessels and pressure pipelines | |
| CN104395488A (en) | High-strength corrosion-resistant tubing for oil and gas completion and drilling applications, and process for manufacturing thereof | |
| CN1166538A (en) | Normal-temp copper pickling corrosion inhibitor | |
| EP0155011B2 (en) | High-strength alloy for industrial vessels | |
| US20060138383A1 (en) | Heat-transfer medium and methods of making and using the same | |
| CN2608932Y (en) | Connection structure of heat-exchanging pipe and pipe plate | |
| CN1415452A (en) | Welding rod utilized for the steel bearing the hydrogen sulfide decays | |
| CN1172159C (en) | Ferritic stainless steel heat-exchanger | |
| CN113481510B (en) | Corrosion inhibitor suitable for transforming condensate of coal gasification device and use method thereof | |
| CN1341480A (en) | Rare earth alloy steel tower-type container capable of resisting corrosion of hydrogen sulfide | |
| CN113235094A (en) | Special metal corrosion inhibitor for alkylation device D212 tower and preparation method thereof | |
| Buecker | Water treatment: the continuing battle against FAC; the threat of flow assisted corrosion in power plant equipment demands close attention to proper water chemistry control | |
| Chambers et al. | Performance of tantalum-surface alloy on stainless steel and multiple corrosion resistant alloys in laboratory evaluation of deep well acidizing environments | |
| CN1075565C (en) | Hydrogen sulfide and chlorine ion corrosion resisting steel and its special equipment and fittings | |
| Knoth | High purity ferritic Cr Mo stainless steel–Five years' successful fight against corrosion in the process industry | |
| Alves | Material selection and recent case histories with nickel alloys | |
| US4547338A (en) | Fe-Ni-Cr corrosion resistant alloy | |
| CN201463665U (en) | Carbon steel titanizing-aluminizing heat exchanger | |
| CN2401864Y (en) | Heat-exchanger of special corrosion-resistant low alloy section variable steel pipe | |
| CN1271843A (en) | Special heat exchanger with corrosion-resistant cross-section variable low-alloy steel pipes | |
| CN2401867Y (en) | Heat exchanger of corrosion-resistant low alloy section variable steel pipe |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C06 | Publication | ||
| PB01 | Publication | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |