CN105066096A - Header of ultra supercritical boiler unit at 700 DEG C - Google Patents
Header of ultra supercritical boiler unit at 700 DEG C Download PDFInfo
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- CN105066096A CN105066096A CN201510474200.5A CN201510474200A CN105066096A CN 105066096 A CN105066096 A CN 105066096A CN 201510474200 A CN201510474200 A CN 201510474200A CN 105066096 A CN105066096 A CN 105066096A
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Abstract
The invention relates to a header of an ultra supercritical boiler unit at 700 DEG C. The header comprises a header body and a tube base, wherein one end of the tube base and the header body are welded together; the other end of the tube base and a finishing super-heater or a finishing super-heater tube are welded together; the header is characterized in that the header body is made from a Ni-Cr-Co-Mo-B nickel-based high-temperature alloy large-diameter tube; the tube base is made from a Ni-Cr-Co-Mo-B nickel-based high-temperature alloy small-diameter tube. The invention provides a novel super-heater outlet header or a reheater outlet header applied to an ultra supercritical unit of which the steam parameter is 700 DEG C, and the header is made from the Ni-Cr-Co-Mo-B nickel-based high-temperature alloy large-diameter tube. The material is excellent in high-temperature oxidation property and excellent in practical value.
Description
Technical field
The present invention relates to a kind of outlet header being applied to 700 DEG C of Boiler of Ultra-supercritical Unit superheaters or reheater.
Background technology
Along with the fast development of national economy, energy shortage and environment worsen day by day serious, and the haze particularly sweeping across the central and east in recent years causes both domestic and external showing great attention to.In air-polluting emission, the discharge capacity of coal fired power plant pollutant (being mainly carbon dioxide) occupies the pith of emission inventory, therefore reduces the discharge capacity of nuisance in power production process and reduces the main strategic target that coal consumption has become heat power station development.Already proving, is the important channel reducing coal consumption and decreasing pollution thing discharge degree by improving steam parameter, the raising generating efficiency of generating set.
Under above-mentioned background, 700 DEG C of steam parameter extra-supercritical unit arise at the historic moment.700 DEG C of steam parameter extra-supercritical unit can improve the thermal efficiency of unit, but existing boiler export header cannot meet 700 DEG C of steam boiler peaking performance and adapt to unit load variations to the automatic adjusting function requirement of boiler, and operational reliability is not high simultaneously
Summary of the invention
The technical problem to be solved in the present invention is: meet 700 DEG C of steam boiler peaking performance and adapt to unit load variations to the automatic adjusting function requirement of boiler, improve 700 DEG C of Boiler of Ultra-supercritical Unit outlet header property safe and reliable to operation simultaneously.
In order to solve the problems of the technologies described above, technical scheme of the present invention there is provided a kind of header of 700 DEG C of Boiler of Ultra-supercritical Units, comprise header body and base, base one end is welded with header body, the other end and finishing superheater or final reheater tube welding, it is characterized in that: header body is manufactured by Ni-Cr-Co-Mo-B nickel base superalloy large-diameter pipe, and base is manufactured by Ni-Cr-Co-Mo-B nickel base superalloy small-bore pipe.
Preferably, described superheater or reheater pipe are by the high temperature resistant austenite stainless steel making of Cr-Ni-W-Cu.
Preferably, the Cr weight percent content of described Ni-Cr-Co-Mo-B nickel base superalloy is between 21-23, and Co weight percent content is between 11-13, and Mo weight percent content is between 8-10, and Ni weight percent content is between 46-55.
Preferably, 750 DEG C of allowable stresses of described Ni-Cr-Co-Mo-B nickel base superalloy are more than 44MPa.
In order to meet 700 DEG C of steam boiler peaking performance and adapt to unit load variations to the automatic adjusting function requirement of boiler, improve 700 DEG C of Boiler of Ultra-supercritical Unit reheater outlet header property safe and reliable to operation, the present invention uses Ni-Cr-Co-Mo-B nickel base superalloy large-diameter pipe to manufacture header simultaneously.Ni-Cr-Co-Mo-B nickel base superalloy has excellent elevated temperature strength, has excellent anti-steam oxidation ability, can be used for 700 DEG C of steam parameter extra-supercritical unit superheaters and reheater outlet header as excellent alternative materials.
The invention provides and a kind ofly novel be applied to 700 DEG C of steam parameter extra-supercritical unit super-heater exit cases or reheater outlet header, materials'use Ni-Cr-Co-Mo-B nickel base superalloy large-diameter pipe.Material at high temperature oxidation susceptibility is excellent, has excellent practical value.
Accompanying drawing explanation
Fig. 1 is the structural representation of the header of a kind of 700 DEG C of Boiler of Ultra-supercritical Units provided by the invention.
Detailed description of the invention
For making the present invention become apparent, hereby with preferred embodiment, and accompanying drawing is coordinated to be described in detail below.
The invention provides and a kind ofly novel be applied to 700 DEG C of steam parameter extra-supercritical unit super-heater exit cases or reheater outlet header, materials'use Ni-Cr-Co-Mo-B Fe Ni matrix high temperature alloy large-diameter pipe and small-bore pipe.As shown in Figure 1, comprise finishing superheater outlet header or final reheater outlet header 1, material is Ni-Cr-Co-Mo-B nickel base superalloy large-diameter pipe; Header base 2, material is Ni-Cr-Co-Mo-B nickel base superalloy small-bore pipe; Cr-Ni-W-Cu is high temperature resistant austenitic stainless steel small-caliber steel pipe 3, part dimension calculates according to design parameter.
Header base 2 one end of finishing superheater outlet header or final reheater outlet header 1 is welded with finishing superheater outlet header or final reheater outlet header 1, and the other end welds with the high temperature resistant austenitic stainless steel small-caliber steel pipe 3 of Cr-Ni-W-Cu.
Ni-Cr-Co-Mo-B nickel base superalloy chemical composition is as shown in table 1:
| Cr | Co | Mo | Ni |
| 21-23 | 11-13 | 8-10 | 46-55 |
Table 1Ni-Cr-Co-Mo-B nickel base superalloy alloy composition table (wt, %)
Cr-Ni-W-Cu is high temperature resistant, and austenite stainless steel chemical composition is as shown in table 2:
| Cr | Ni | W | Cu |
| 21-24 | 23-27 | 3-4 | 2-4 |
The high temperature resistant austenitic stainless steel chemical component table (wt, %) of table 2Cr-Ni-W-Cu
The maximum permissible stress of Ni-Cr-Co-Mo-B nickel base superalloy is as shown in table 3:
Table 3 maximum permissible stress table (unit: MPa).
Claims (4)
1. the header of 700 DEG C of Boiler of Ultra-supercritical Units, comprise header body and base, base one end is welded with header body, the other end and finishing superheater or final reheater tube welding, it is characterized in that: header body is manufactured by Ni-Cr-Co-Mo-B nickel base superalloy large-diameter pipe, and base is manufactured by Ni-Cr-Co-Mo-B nickel base superalloy small-bore pipe.
2. the header of a kind of 700 DEG C of Boiler of Ultra-supercritical Units as claimed in claim 1, is characterized in that: described superheater or reheater pipe are by the high temperature resistant austenite stainless steel making of Cr-Ni-W-Cu.
3. the header of a kind of 700 DEG C of Boiler of Ultra-supercritical Units as claimed in claim 1, it is characterized in that: the Cr weight percent content of described Ni-Cr-Co-Mo-B nickel base superalloy is between 21-23, Co weight percent content is between 11-13, Mo weight percent content is between 8-10, and Ni weight percent content is between 46-55.
4. the header of a kind of 700 DEG C of Boiler of Ultra-supercritical Units as claimed in claim 3, is characterized in that: 750 DEG C of allowable stresses of described Ni-Cr-Co-Mo-B nickel base superalloy are more than 44MPa.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510474200.5A CN105066096A (en) | 2015-08-05 | 2015-08-05 | Header of ultra supercritical boiler unit at 700 DEG C |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510474200.5A CN105066096A (en) | 2015-08-05 | 2015-08-05 | Header of ultra supercritical boiler unit at 700 DEG C |
Publications (1)
| Publication Number | Publication Date |
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| CN105066096A true CN105066096A (en) | 2015-11-18 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510474200.5A Pending CN105066096A (en) | 2015-08-05 | 2015-08-05 | Header of ultra supercritical boiler unit at 700 DEG C |
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Cited By (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105784772A (en) * | 2016-05-10 | 2016-07-20 | 华能国际电力股份有限公司 | System and method for real furnace verification on novel high-temperature alloy material and component |
| CN105864740A (en) * | 2016-06-01 | 2016-08-17 | 哈尔滨锅炉厂有限责任公司 | P93 header for super 623 DEG C advanced ultra supercritical unit boiler |
| CN105886950A (en) * | 2016-06-01 | 2016-08-24 | 哈尔滨锅炉厂有限责任公司 | 700 DEG C reheater of advanced ultra supercritical unit boiler |
| CN106016236A (en) * | 2016-06-01 | 2016-10-12 | 哈尔滨锅炉厂有限责任公司 | Container of above-623 DEG C advanced ultra-supercritical unit boiler |
| CN106011686A (en) * | 2016-06-01 | 2016-10-12 | 哈尔滨锅炉厂有限责任公司 | Reheater of 650 DEG C advanced ultra-supercritical unit boiler |
| CN106051739A (en) * | 2016-06-01 | 2016-10-26 | 哈尔滨锅炉厂有限责任公司 | Superheater of 700 DEG C advanced ultra-supercritical unit boiler |
| CN106051725A (en) * | 2016-06-01 | 2016-10-26 | 哈尔滨锅炉厂有限责任公司 | High strength material header of 650 DEG C advanced ultra-supercritical unit boiler |
| CN106051740A (en) * | 2016-06-01 | 2016-10-26 | 哈尔滨锅炉厂有限责任公司 | Superheater of 650 DEG C advanced ultra-supercritical unit boiler |
| CN106051727A (en) * | 2016-06-01 | 2016-10-26 | 哈尔滨锅炉厂有限责任公司 | S31035 material header of 650 DEG C advanced ultra-supercritical unit boiler |
| CN106051726A (en) * | 2016-06-01 | 2016-10-26 | 哈尔滨锅炉厂有限责任公司 | Header of ultra 700 DEG C advanced ultra-supercritical unit boiler |
| CN106051728A (en) * | 2016-06-01 | 2016-10-26 | 哈尔滨锅炉厂有限责任公司 | Header of 700 DEG C advanced ultra-supercritical unit boiler |
| CN106051729A (en) * | 2016-06-01 | 2016-10-26 | 哈尔滨锅炉厂有限责任公司 | Header of 650 DEG C advanced ultra-supercritical unit boiler |
| CN106066035A (en) * | 2016-06-01 | 2016-11-02 | 哈尔滨锅炉厂有限责任公司 | Surpass the G115 header of 623 DEG C of advanced Boiler of Ultra-supercritical Units |
| CN106090875A (en) * | 2016-06-01 | 2016-11-09 | 哈尔滨锅炉厂有限责任公司 | The header of 650 DEG C of advanced Boiler of Ultra-supercritical Units |
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| CN1340109A (en) * | 1999-02-16 | 2002-03-13 | 桑德维克公司 | Heat resistant austenitic stainless steel |
| US20120034126A1 (en) * | 2009-01-30 | 2012-02-09 | Sandvik Intellectual Property Ab | STAINLESS AUSTENITIC LOW Ni STEEL ALLOY |
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| CN1340109A (en) * | 1999-02-16 | 2002-03-13 | 桑德维克公司 | Heat resistant austenitic stainless steel |
| US20120034126A1 (en) * | 2009-01-30 | 2012-02-09 | Sandvik Intellectual Property Ab | STAINLESS AUSTENITIC LOW Ni STEEL ALLOY |
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Cited By (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105784772A (en) * | 2016-05-10 | 2016-07-20 | 华能国际电力股份有限公司 | System and method for real furnace verification on novel high-temperature alloy material and component |
| CN105864740A (en) * | 2016-06-01 | 2016-08-17 | 哈尔滨锅炉厂有限责任公司 | P93 header for super 623 DEG C advanced ultra supercritical unit boiler |
| CN105886950A (en) * | 2016-06-01 | 2016-08-24 | 哈尔滨锅炉厂有限责任公司 | 700 DEG C reheater of advanced ultra supercritical unit boiler |
| CN106016236A (en) * | 2016-06-01 | 2016-10-12 | 哈尔滨锅炉厂有限责任公司 | Container of above-623 DEG C advanced ultra-supercritical unit boiler |
| CN106011686A (en) * | 2016-06-01 | 2016-10-12 | 哈尔滨锅炉厂有限责任公司 | Reheater of 650 DEG C advanced ultra-supercritical unit boiler |
| CN106051739A (en) * | 2016-06-01 | 2016-10-26 | 哈尔滨锅炉厂有限责任公司 | Superheater of 700 DEG C advanced ultra-supercritical unit boiler |
| CN106051725A (en) * | 2016-06-01 | 2016-10-26 | 哈尔滨锅炉厂有限责任公司 | High strength material header of 650 DEG C advanced ultra-supercritical unit boiler |
| CN106051740A (en) * | 2016-06-01 | 2016-10-26 | 哈尔滨锅炉厂有限责任公司 | Superheater of 650 DEG C advanced ultra-supercritical unit boiler |
| CN106051727A (en) * | 2016-06-01 | 2016-10-26 | 哈尔滨锅炉厂有限责任公司 | S31035 material header of 650 DEG C advanced ultra-supercritical unit boiler |
| CN106051726A (en) * | 2016-06-01 | 2016-10-26 | 哈尔滨锅炉厂有限责任公司 | Header of ultra 700 DEG C advanced ultra-supercritical unit boiler |
| CN106051728A (en) * | 2016-06-01 | 2016-10-26 | 哈尔滨锅炉厂有限责任公司 | Header of 700 DEG C advanced ultra-supercritical unit boiler |
| CN106051729A (en) * | 2016-06-01 | 2016-10-26 | 哈尔滨锅炉厂有限责任公司 | Header of 650 DEG C advanced ultra-supercritical unit boiler |
| CN106066035A (en) * | 2016-06-01 | 2016-11-02 | 哈尔滨锅炉厂有限责任公司 | Surpass the G115 header of 623 DEG C of advanced Boiler of Ultra-supercritical Units |
| CN106090875A (en) * | 2016-06-01 | 2016-11-09 | 哈尔滨锅炉厂有限责任公司 | The header of 650 DEG C of advanced Boiler of Ultra-supercritical Units |
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Application publication date: 20151118 |
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