Foreword
This standard is prepared jointly by MCC CCID Engineering Technology Co., Ltd. and relevant units in accordance with the requirements of the Notice of the Ministry of Housing and Urban Rural Development on the Preparation of Engineering Construction Specifications and Standards and Related Work Plans in 2019 (JB [2019] No. 8).
During the revision of this standard, the standard preparation team carried out a number of special studies and conducted a large number of investigations and analyses; The practical experience in the design, construction and production of shell structures in China in the past decade is summarized; Absorbed the scientific research achievements in recent years; It is compared with foreign advanced standards and specifications; It has coordinated with relevant standards and specifications at home and abroad, and learned from relevant national standards. On this basis, the opinions of relevant units were widely solicited in various ways. After repeated discussion and revision, the final draft was reviewed and finalized.
The main technical contents of this standard are: general rules, terms, basic regulations, loads, materials, blast furnaces, hot stoves, gravity dust collectors, crude gas pipelines, construction, etc.
The main technical contents of this standard are:
1. The original Chapters 6 and 7 are revised into Chapters 6~9, and the original Chapters 8, 9 and 10 are merged into Chapter 10
2. Added and adjusted terms and deleted symbols;
3. Determine the equivalent stress according to the yield criterion of the fourth strength theory
4. Revise the value principle of allowable stress;
5. The selection regulations of shell steel have been adjusted; 6. The calculation formula of shell thickness is adjusted;
7. The calculation formula of the connecting anchor bolt between the shell and hearth section of the hot blast furnace and the foundation has been revised, and the relevant structural requirements have been adjusted;
8. Adjusted the requirements for shell opening area and clearance between holes
9. The T-shaped connection between the hearth section of the hot blast furnace shell and the annular plate is canceled;
10. The structural requirements for the supporting structure of the shell of the gravity precipitator are added;
11. The requirements for the design of the raw gas pipeline according to the pressure pipeline are clearly specified
12. The standards and qualification levels for non-destructive testing of shell welds have been adjusted. The Ministry of Housing and Urban Rural Development is responsible for the management of this standard, China Metallurgical Construction Association is responsible for the daily management, and MCC CCID Engineering Technology Co., Ltd. is responsible for the interpretation of specific technical content. If you have any comments or suggestions during the implementation process, please send them to the management team of MCC CCID Engineering Technology Co., Ltd. (address: No. 1, Shuanggang Road, Yuzhong District, Chongqing; postal code: 400,013; e-mail: kjglbgg@cis-di.com.cn )。
1 General
1.0.1 This standard is formulated to standardize the design and construction of the shell structure of the ironmaking process furnace, achieve advanced technology, reasonable economy, safe application and ensure quality.
1.0.2 This standard is applicable to the structural design and construction of new, reconstructed and expanded blast furnaces, hot air stoves, gravity precipitators and crude gas pipe shells with an effective volume of 1000m3~5000m3.
1.0.3 The design and construction of the shell structure of the ironmaking process furnace shall not only comply with this standard, but also comply with the provisions of the current national standards.
2 Terminology
2.0.1 Blast furnace
A special metallurgical furnace that continuously reduces iron containing raw materials into pig iron under high temperature and pressure is the main equipment of contemporary iron smelting. The steel plate is used as the furnace shell, and the cooling equipment is installed inside the shell and the refractory lining is built, or the jacket cooling equipment is installed outside the shell and the refractory lining is built inside the shell. From top to bottom, the blast furnace body is divided into 6 parts: cover, throat, shaft, waist, bosh and hearth.
2.0.2 Hot blast stove
The cold air blown by the blower is heated to a certain temperature and sent to the thermal power equipment of the blast furnace. The hot blast furnace system is composed of hot blast furnace group, external combustion, air supply system pipeline valves and other process facilities. Through the alternate combustion, heat storage, air supply and heat release of different hot blast furnaces in the hot blast furnace group, the continuous air supply to the blast furnace is realized. The hot blast furnace body is a pressure bearing steel structure shell lined with refractory and thermal insulation materials. There are refractory structures such as regenerative chamber, combustion chamber and burner built in the hot air furnace.
2.0.3 De duster
Process facilities used to remove coarse dust contained in blast furnace gas. Generally, there are typical structures such as gravity dust remover and cyclone dust remover.
2.0.4 Raw gas pipeline
The blast furnace gas produced by the blast furnace smelting reaction is exported and sent to the large gas pipeline of the gas purification facility. It is composed of riser, downcomer, five way ball or three-way pipe.
2.0.5 First generation campaign life
The actual operation life of the blast furnace from ignition and commissioning to shutdown and overhaul is the service life of the structure or component specified in the shell structure design for the intended purpose.
3 Basic regulations
3.0.1 During the design of shell structure, materials, structural scheme, weld quality grade and structural measures shall be selected according to the actual situation of the project, and the strength and stiffness requirements in the process of process, fabrication, installation and production shall be met.
3.0.2 Under normal use, the service life of the first generation of blast furnace should not be less than 15 years; The working life of hot blast furnace shall meet the requirements of the second generation furnace service.
3.0.3 The shell structure shall be designed according to the characteristics of ironmaking process and furnace capacity level, and the load nature, material supply, opening shape, fabrication, installation, construction conditions and other factors shall be comprehensively considered to select a reasonable structure form, node structure and connection mode.
3.0.4 During the design of shell structure, the equivalent stress shall be determined by the fourth strength theoretical yield criterion. The standard combination shall be adopted for the action effect of load, and the equivalent stress of each part shall not be greater than the specified allowable limit value.
3.0.5 The shell structure shall be subject to overall elastic stress analysis. When the overall elastic stress analysis does not meet the requirements, the local elastic-plastic stress analysis should also be carried out. For the shell structure that needs to control deformation during use, the deformation shall be calculated.
3.0.6 The welding of shell structure shall comply with the relevant provisions of the current national standards Code for Construction of Field Equipment and Industrial Pipeline Welding Engineering (GB 50236), Code for Welding of Steel Structures (GB 50661) and Pressure Vessel Welding Code (NB/T 47015), as well as the provisions of Chapter 10 of this standard.
3.0.7 The combined welds of butt joint, T-shaped butt joint and fillet joint of shell structure shall be fully welded, and the weld quality grade shall meet the following requirements:
1. The butt weld of blast furnace, hot blast furnace and five way spherical shell structure shall be Grade I.
2 The horizontal butt weld of downcomer shell structure shall be Grade I, and the longitudinal butt weld shall be Grade II.
3 Butt welds of other shell structures shall be Grade II.
4 Load
4.1 Load classification and load effect combination
4.1.1 Loads on shell structures can be divided into permanent loads and variable loads.
4.1.2 When designing the shell structure and connection, the load effect combination shall be calculated according to the following formula according to the loads that may act simultaneously during production and use, and the strength shall be checked according to the most unfavorable one:
Where: S - load effect combination value
Sck - - load effect value calculated according to the standard value G of permanent load
SQk -- the load effect value calculated according to the standard value Qn of variable load, where SQk is
Those who play a controlling role in various variable load effects
Ei - coefficient of the combination value of variable load Q, which affects the shell structure of blast furnace and hot blast furnace
Construct 1.0; For other shell structures, take 1.0 when there is no wind and 0.9 when there is wind; The load effect combination value coefficient can be 0.6 for the load combination in which the burden load participates under the charging condition of the blast furnace;
N -- number of variable loads involved in the combination.
4.1.3 The temperature effect of the shell shall be resisted by the allowable stress under the design temperature, but shall not include the temperature difference effect.
4.1.4 When designing the anchor bolts connecting the hearth section of the hot blast furnace with the foundation, the seismic effect shall be calculated.
4.2 Shell load
4.2.1 The blast furnace shell load shall be determined according to Table 4.2.1.
5 Materials
5.1 Steel
5.1.1 The steel grade shall be selected according to the importance of shell structure, structural form, load, stress characteristics, design temperature, corrosion medium characteristics, steel plate thickness and other factors.
5.1.2 Except for the bottom plate of the blast furnace, the steel of the blast furnace, hot blast furnace and five way spherical shell structure shall have 0 ℃ impact toughness qualification guarantee. The steel of other shell structures should have the qualified assurance of impact toughness at room temperature. The carbon equivalent (CEV) of steel for blast furnace shell structure should not be greater than 0.42% or the welding cold crack sensitivity index (P.m) should not be greater than 0.26%. The carbon equivalent (CEV) or welding cold crack sensitivity index (Pm) can be calculated by smelting analysis value according to the formula (B.1.2-1) and formula (B.1.2-2) in Appendix B of this standard.
5.1.3 The steel for blast furnace shell structure should be the steel for shell structure in Appendix B of this standard. Q355C steel, Q390C steel and Q390D steel can be used for the shell structure of blast furnace with effective volume of 1200m3~2000m3. The bottom plate of blast furnace can be made of Q355B steel.
5.1.4 Q355C steel and Q390C steel should be used for the shell structure of the hot blast furnace body and bottom, and Q345R steel or the shell structure steel in Appendix B of this standard should be used for the high temperature section of the shell and the vault.
5.1.5 Q355B steel should be used for the shell structure of the gravity precipitator.
5.1.6 Q355B steel should be used for shell structure of raw gas pipeline.
5.1.7 Q345R steel should be used for five way spherical shell structure. Q355C steel can be used for five way spherical shell structure of blast furnace with effective volume of 1200m3~2000m2.
5.1.8 Among the selected steels, the quality of Q355B steel, Q355C steel, Q390C steel, Q390D steel and Q345R steel shall comply with the relevant provisions of the current national standards Low Alloy High Strength Structural Steel (GB/T 1591) and Steel Plates for Boilers and Pressure Vessels (GB 713).
6 Blast furnace
7 Hot blast stove
8 Gravity dust remover
9 Raw gas pipeline
10 Construction
Appendix A Matching of High Temperature Resistant Coatings
Appendix B Steel Plate for Shell Structure
Appendix C Shape and Dimension of Full Penetration Groove for Blast Furnace Shell Structure
Appendix D Shape and Dimension of Full Penetration Groove for Shell Structure of Internal Combustion Hot Blast Furnace
Appendix E Shape and Dimension of Full Penetration Groove for Regenerator Shell Structure of External Combustion Hot Blast Furnace
Appendix F shows the shape and size of the full penetration groove of the shell structure of the air mixing chamber
Appendix G Shape and Dimension of Full Penetration Groove for Shell Structure of Top fired Hot Blast Stove
Description of words used in this standard
List of reference standards
Foreword
1 General
2 Terminology
3 Basic regulations
4 Load
5 Materials
6 Blast furnace
7 Hot blast stove
8 Gravity dust remover
9 Raw gas pipeline
10 Construction
Appendix A Matching of High Temperature Resistant Coatings
Appendix B Steel Plate for Shell Structure
Appendix C Shape and Dimension of Full Penetration Groove for Blast Furnace Shell Structure
Appendix D Shape and Dimension of Full Penetration Groove for Shell Structure of Internal Combustion Hot Blast Furnace
Appendix E Shape and Dimension of Full Penetration Groove for Regenerator Shell Structure of External Combustion Hot Blast Furnace
Appendix F shows the shape and size of the full penetration groove of the shell structure of the air mixing chamber
Appendix G Shape and Dimension of Full Penetration Groove for Shell Structure of Top fired Hot Blast Stove
Description of words used in this standard
List of reference standards
Standard
GB/T 50567-2022 Technical standard for shell structure of ironmaking furnace (English Version)
Standard No.
GB/T 50567-2022
Status
valid
Language
English
File Format
PDF
Word Count
40000 words
Price(USD)
1200.0
Implemented on
2022-5-1
Delivery
via email in 1~10 business day
Detail of GB/T 50567-2022
Standard No.
GB/T 50567-2022
English Name
Technical standard for shell structure of ironmaking furnace
Foreword
This standard is prepared jointly by MCC CCID Engineering Technology Co., Ltd. and relevant units in accordance with the requirements of the Notice of the Ministry of Housing and Urban Rural Development on the Preparation of Engineering Construction Specifications and Standards and Related Work Plans in 2019 (JB [2019] No. 8).
During the revision of this standard, the standard preparation team carried out a number of special studies and conducted a large number of investigations and analyses; The practical experience in the design, construction and production of shell structures in China in the past decade is summarized; Absorbed the scientific research achievements in recent years; It is compared with foreign advanced standards and specifications; It has coordinated with relevant standards and specifications at home and abroad, and learned from relevant national standards. On this basis, the opinions of relevant units were widely solicited in various ways. After repeated discussion and revision, the final draft was reviewed and finalized.
The main technical contents of this standard are: general rules, terms, basic regulations, loads, materials, blast furnaces, hot stoves, gravity dust collectors, crude gas pipelines, construction, etc.
The main technical contents of this standard are:
1. The original Chapters 6 and 7 are revised into Chapters 6~9, and the original Chapters 8, 9 and 10 are merged into Chapter 10
2. Added and adjusted terms and deleted symbols;
3. Determine the equivalent stress according to the yield criterion of the fourth strength theory
4. Revise the value principle of allowable stress;
5. The selection regulations of shell steel have been adjusted; 6. The calculation formula of shell thickness is adjusted;
7. The calculation formula of the connecting anchor bolt between the shell and hearth section of the hot blast furnace and the foundation has been revised, and the relevant structural requirements have been adjusted;
8. Adjusted the requirements for shell opening area and clearance between holes
9. The T-shaped connection between the hearth section of the hot blast furnace shell and the annular plate is canceled;
10. The structural requirements for the supporting structure of the shell of the gravity precipitator are added;
11. The requirements for the design of the raw gas pipeline according to the pressure pipeline are clearly specified
12. The standards and qualification levels for non-destructive testing of shell welds have been adjusted. The Ministry of Housing and Urban Rural Development is responsible for the management of this standard, China Metallurgical Construction Association is responsible for the daily management, and MCC CCID Engineering Technology Co., Ltd. is responsible for the interpretation of specific technical content. If you have any comments or suggestions during the implementation process, please send them to the management team of MCC CCID Engineering Technology Co., Ltd. (address: No. 1, Shuanggang Road, Yuzhong District, Chongqing; postal code: 400,013; e-mail: kjglbgg@cis-di.com.cn )。
1 General
1.0.1 This standard is formulated to standardize the design and construction of the shell structure of the ironmaking process furnace, achieve advanced technology, reasonable economy, safe application and ensure quality.
1.0.2 This standard is applicable to the structural design and construction of new, reconstructed and expanded blast furnaces, hot air stoves, gravity precipitators and crude gas pipe shells with an effective volume of 1000m3~5000m3.
1.0.3 The design and construction of the shell structure of the ironmaking process furnace shall not only comply with this standard, but also comply with the provisions of the current national standards.
2 Terminology
2.0.1 Blast furnace
A special metallurgical furnace that continuously reduces iron containing raw materials into pig iron under high temperature and pressure is the main equipment of contemporary iron smelting. The steel plate is used as the furnace shell, and the cooling equipment is installed inside the shell and the refractory lining is built, or the jacket cooling equipment is installed outside the shell and the refractory lining is built inside the shell. From top to bottom, the blast furnace body is divided into 6 parts: cover, throat, shaft, waist, bosh and hearth.
2.0.2 Hot blast stove
The cold air blown by the blower is heated to a certain temperature and sent to the thermal power equipment of the blast furnace. The hot blast furnace system is composed of hot blast furnace group, external combustion, air supply system pipeline valves and other process facilities. Through the alternate combustion, heat storage, air supply and heat release of different hot blast furnaces in the hot blast furnace group, the continuous air supply to the blast furnace is realized. The hot blast furnace body is a pressure bearing steel structure shell lined with refractory and thermal insulation materials. There are refractory structures such as regenerative chamber, combustion chamber and burner built in the hot air furnace.
2.0.3 De duster
Process facilities used to remove coarse dust contained in blast furnace gas. Generally, there are typical structures such as gravity dust remover and cyclone dust remover.
2.0.4 Raw gas pipeline
The blast furnace gas produced by the blast furnace smelting reaction is exported and sent to the large gas pipeline of the gas purification facility. It is composed of riser, downcomer, five way ball or three-way pipe.
2.0.5 First generation campaign life
The actual operation life of the blast furnace from ignition and commissioning to shutdown and overhaul is the service life of the structure or component specified in the shell structure design for the intended purpose.
3 Basic regulations
3.0.1 During the design of shell structure, materials, structural scheme, weld quality grade and structural measures shall be selected according to the actual situation of the project, and the strength and stiffness requirements in the process of process, fabrication, installation and production shall be met.
3.0.2 Under normal use, the service life of the first generation of blast furnace should not be less than 15 years; The working life of hot blast furnace shall meet the requirements of the second generation furnace service.
3.0.3 The shell structure shall be designed according to the characteristics of ironmaking process and furnace capacity level, and the load nature, material supply, opening shape, fabrication, installation, construction conditions and other factors shall be comprehensively considered to select a reasonable structure form, node structure and connection mode.
3.0.4 During the design of shell structure, the equivalent stress shall be determined by the fourth strength theoretical yield criterion. The standard combination shall be adopted for the action effect of load, and the equivalent stress of each part shall not be greater than the specified allowable limit value.
3.0.5 The shell structure shall be subject to overall elastic stress analysis. When the overall elastic stress analysis does not meet the requirements, the local elastic-plastic stress analysis should also be carried out. For the shell structure that needs to control deformation during use, the deformation shall be calculated.
3.0.6 The welding of shell structure shall comply with the relevant provisions of the current national standards Code for Construction of Field Equipment and Industrial Pipeline Welding Engineering (GB 50236), Code for Welding of Steel Structures (GB 50661) and Pressure Vessel Welding Code (NB/T 47015), as well as the provisions of Chapter 10 of this standard.
3.0.7 The combined welds of butt joint, T-shaped butt joint and fillet joint of shell structure shall be fully welded, and the weld quality grade shall meet the following requirements:
1. The butt weld of blast furnace, hot blast furnace and five way spherical shell structure shall be Grade I.
2 The horizontal butt weld of downcomer shell structure shall be Grade I, and the longitudinal butt weld shall be Grade II.
3 Butt welds of other shell structures shall be Grade II.
4 Load
4.1 Load classification and load effect combination
4.1.1 Loads on shell structures can be divided into permanent loads and variable loads.
4.1.2 When designing the shell structure and connection, the load effect combination shall be calculated according to the following formula according to the loads that may act simultaneously during production and use, and the strength shall be checked according to the most unfavorable one:
Where: S - load effect combination value
Sck - - load effect value calculated according to the standard value G of permanent load
SQk -- the load effect value calculated according to the standard value Qn of variable load, where SQk is
Those who play a controlling role in various variable load effects
Ei - coefficient of the combination value of variable load Q, which affects the shell structure of blast furnace and hot blast furnace
Construct 1.0; For other shell structures, take 1.0 when there is no wind and 0.9 when there is wind; The load effect combination value coefficient can be 0.6 for the load combination in which the burden load participates under the charging condition of the blast furnace;
N -- number of variable loads involved in the combination.
4.1.3 The temperature effect of the shell shall be resisted by the allowable stress under the design temperature, but shall not include the temperature difference effect.
4.1.4 When designing the anchor bolts connecting the hearth section of the hot blast furnace with the foundation, the seismic effect shall be calculated.
4.2 Shell load
4.2.1 The blast furnace shell load shall be determined according to Table 4.2.1.
5 Materials
5.1 Steel
5.1.1 The steel grade shall be selected according to the importance of shell structure, structural form, load, stress characteristics, design temperature, corrosion medium characteristics, steel plate thickness and other factors.
5.1.2 Except for the bottom plate of the blast furnace, the steel of the blast furnace, hot blast furnace and five way spherical shell structure shall have 0 ℃ impact toughness qualification guarantee. The steel of other shell structures should have the qualified assurance of impact toughness at room temperature. The carbon equivalent (CEV) of steel for blast furnace shell structure should not be greater than 0.42% or the welding cold crack sensitivity index (P.m) should not be greater than 0.26%. The carbon equivalent (CEV) or welding cold crack sensitivity index (Pm) can be calculated by smelting analysis value according to the formula (B.1.2-1) and formula (B.1.2-2) in Appendix B of this standard.
5.1.3 The steel for blast furnace shell structure should be the steel for shell structure in Appendix B of this standard. Q355C steel, Q390C steel and Q390D steel can be used for the shell structure of blast furnace with effective volume of 1200m3~2000m3. The bottom plate of blast furnace can be made of Q355B steel.
5.1.4 Q355C steel and Q390C steel should be used for the shell structure of the hot blast furnace body and bottom, and Q345R steel or the shell structure steel in Appendix B of this standard should be used for the high temperature section of the shell and the vault.
5.1.5 Q355B steel should be used for the shell structure of the gravity precipitator.
5.1.6 Q355B steel should be used for shell structure of raw gas pipeline.
5.1.7 Q345R steel should be used for five way spherical shell structure. Q355C steel can be used for five way spherical shell structure of blast furnace with effective volume of 1200m3~2000m2.
5.1.8 Among the selected steels, the quality of Q355B steel, Q355C steel, Q390C steel, Q390D steel and Q345R steel shall comply with the relevant provisions of the current national standards Low Alloy High Strength Structural Steel (GB/T 1591) and Steel Plates for Boilers and Pressure Vessels (GB 713).
6 Blast furnace
7 Hot blast stove
8 Gravity dust remover
9 Raw gas pipeline
10 Construction
Appendix A Matching of High Temperature Resistant Coatings
Appendix B Steel Plate for Shell Structure
Appendix C Shape and Dimension of Full Penetration Groove for Blast Furnace Shell Structure
Appendix D Shape and Dimension of Full Penetration Groove for Shell Structure of Internal Combustion Hot Blast Furnace
Appendix E Shape and Dimension of Full Penetration Groove for Regenerator Shell Structure of External Combustion Hot Blast Furnace
Appendix F shows the shape and size of the full penetration groove of the shell structure of the air mixing chamber
Appendix G Shape and Dimension of Full Penetration Groove for Shell Structure of Top fired Hot Blast Stove
Description of words used in this standard
List of reference standards
Contents of GB/T 50567-2022
Foreword
1 General
2 Terminology
3 Basic regulations
4 Load
5 Materials
6 Blast furnace
7 Hot blast stove
8 Gravity dust remover
9 Raw gas pipeline
10 Construction
Appendix A Matching of High Temperature Resistant Coatings
Appendix B Steel Plate for Shell Structure
Appendix C Shape and Dimension of Full Penetration Groove for Blast Furnace Shell Structure
Appendix D Shape and Dimension of Full Penetration Groove for Shell Structure of Internal Combustion Hot Blast Furnace
Appendix E Shape and Dimension of Full Penetration Groove for Regenerator Shell Structure of External Combustion Hot Blast Furnace
Appendix F shows the shape and size of the full penetration groove of the shell structure of the air mixing chamber
Appendix G Shape and Dimension of Full Penetration Groove for Shell Structure of Top fired Hot Blast Stove
Description of words used in this standard
List of reference standards