Contents
1 Scope 5
2 Normative references 5
3 General provisions 6
4 Piping arrangement 14
4.1 General requirements 14
4.2 Gas duct 23
4.3 Cold air duct 25
4.4 Hot air duct 27
4.5 Raw coal pipeline 28
4.6 Pulverization pipeline 30
4.7 Pulverized coal delivery piping 32
5 Specification and material of the pipeline 35
5.1 Pipeline specification 35
5.2 Material 36
5.3 Weld 39
6 Pipeline and supporting rib 42
6.1 General requirements 42
6.2 Design for pipeline and supporting rib 45
7 Optimized selected type for shaped piece 47
7.1 General requirements 47
7.2 Selected type for shaped piece 47
8 Accessory and component 55
8.1 General requirements 55
8.2 Accessory 56
8.3 Components 57
8.4 Air lock 60
8.5 Damper 62
9 Explosion precautions 71
9.1 General requirements 71
9.2 Raw coal bunker 72
9.3 Pulverized coal bin 73
Appendix A 94
A1 Pulverized Coal Delivering Duct 94
A2 Flue and pulverizing pipe 94
A3 Round air duct 95
A4 Rectangular duct 97
A5 English system pulverized coal delivering duct 99
Appendix B 101
Appendix C 104
C1 Permissible stress of usual constructional steel products 104
C2 Elastic modulus of general constructional steel products 106
Appendix D 108
Appendix E 110
Appendix F 112
Appendix G 114
Appendix H 115
Appendix J 117
Appendix K 120
Appendix L 121
L1 Rotary moment of damper with self-lubrication aligning bearing 121
L2 Rotary moment of cast iron damper 122
Appendix M 123
Appendix N 125
Appendix P 126
Appendix Q 127
1 Scope 5
2 Normative references 5
3 General provisions 6
4 Piping arrangement 14
4.1 General requirements 14
4.2 Gas duct 23
4.3 Cold air duct 25
4.4 Hot air duct 27
4.5 Raw coal pipeline 28
4.6 Pulverization pipeline 30
4.7 Pulverized coal delivery piping 32
5 Specification and material of the pipeline 35
5.1 Pipeline specification 35
5.2 Material 36
5.3 Weld 39
6 Pipeline and supporting rib 42
6.1 General requirements 42
6.2 Design for pipeline and supporting rib 45
7 Optimized selected type for shaped piece 47
7.1 General requirements 47
7.2 Selected type for shaped piece 47
8 Accessory and component 55
8.1 General requirements 55
8.2 Accessory 56
8.3 Components 57
8.4 Air lock 60
8.5 Damper 62
9 Explosion precautions 71
9.1 General requirements 71
9.2 Raw coal bunker 72
9.3 Pulverized coal bin 73
Appendix A 94
A1 Pulverized Coal Delivering Duct 94
A2 Flue and pulverizing pipe 94
A3 Round air duct 95
A4 Rectangular duct 97
A5 English system pulverized coal delivering duct 99
Appendix B 101
Appendix C 104
C1 Permissible stress of usual constructional steel products 104
C2 Elastic modulus of general constructional steel products 106
Appendix D 108
Appendix E 110
Appendix F 112
Appendix G 114
Appendix H 115
Appendix J 117
Appendix K 120
Appendix L 121
L1 Rotary moment of damper with self-lubrication aligning bearing 121
L2 Rotary moment of cast iron damper 122
Appendix M 123
Appendix N 125
Appendix P 126
Appendix Q 127
