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Current Developments in Bulk Solids Handling

:	Gabriël Lodewijks
:	Current Developments in Bulk Solids Handling
:	Vogel Communications Group GmbH& Co. KG
:	9783834361172
:	1
:	CHF 18.40
:

:	Wärme-, Energie- und Kraftwerktechnik
:	English

:	251
:	Wasserzeichen/DRM
:	PC/MAC/eReader/Tablet
:	PDF

Zwei internationale Konferenzen in Barcelona und Prag haben 2006 und 2008 die neusten Entwicklungen auf dem Gebiet der Schüttguttechnik zusammengefasst. Während der Schwerpunkt der ersten Konferenz auf den Innovationen bei der Lagerung, dem Handling und dem Transport von Schüttgütern lag, konzentrierte sich die zweite Konferenz vor allem auf den Umwelteinfluss der Systeme.Beide Konferenzen brachten Wissenschaftler und Praktiker zusammen, wodurch die Beiträge theoretische Grundlagen und ihre Umsetzbarkeit im industriellen Alltag widerspiegeln. Professor Lodewijks, der beide Konferenzen als Chairman leitete, fasste für das vorliegende Buch die wichtigsten und innovativsten Beiträge zusammen. Entstanden ist so ein Werk, das in breiter Basis die aktuelle Entwicklung der Schüttguttechnik zeigt, wie sie von weltweit anerkannten Experten diskutiert und angewendet wird.Vier Kapitel zeigen den Stand der Technik:A. Belt ConveyingB. Pneumatic ConveyingC. Silo& Dry Bulk Terminal TechnologyD. Environmental Aspects

Dr. ir. Gabriel Lodewijks ist Professor of Transport Engineering& Logistics an der Delft University of Technology und zählt als anerkannter Experte. Daneben leitet er die von ihm gegründete Firma Conveyor Experts B.V., die weltweit im Bereich der Bandförderung tätig ist, und ist Chief Technology Officer der Schiphol Group. Neben vielen Veröffentlichungen war er bei den Konferenzen BulkEurope 2006 und BulkEurope 2008 als Chairman verantwortlich.

	Title	3
	Copyright	4
	Contents	5
	Preface	7
	A: BELT CONVEYING	9
	A.1 Design Considerations to Reduce the Costs of Conveyor Systems	11
	1 INTRODUCTION	11
	2 BULK SOLID AND CONVEYOR BELT FLEXURE RESISTANCE	11
	3 ROTATING RESISTANCE OF IDLER ROLLS	14
	4 INDENTATION ROLLING RESISTANCE	17
	5 ECONOMIC CONSIDERATIONS	19
	6 CONCLUSION	20
	7 REFERENCES	21
	A.2 Determination of Rolling Resistance of Belt Conveyors using Rubber Data: Fact or Fiction?	23
	1 INTRODUCTION	23
	2 RECENT SOUTH AFRICAN PROJECTS	24
	3 VISCOELASTICITY	25
	4 RHEOLOGICAL TESTING	27
	5 THE INDENTATION ROLLING RESISTANCE	31
	6 DISCUSSION	34
	7 CONCLUSIONS	35
	8 REFERENCES	36
	A.3 Indentation Rolling Resistance of Steel Cord Conveyor Belts: A Pseudo 3D Viscoelastic Finite Element Analysis	37
	1 INTRODUCTION	37
	2 BACKGROUND	37
	3 FINITE ELEMENT ANALYSIS	39
	4 RESULTS AND DISCUSSION	41
	5 CONCLUSIONS	47
	6 ACKNOWLEDGEMENTS	47
	7 REFERENCES	47
	A.4 The possibilities of decreasing the belt conveyors main drive power demand	49
	1 INTRODUCTION	49
	2 LONG-TERM “IN-SITU” TESTS OF THE SELECTED HIGH CAPACITY BELT CONVEYOR	50
	3 FINAL REMARKS	52
	4 REFERENCES	52
	A.5 Theoretical and Experimental Noise Examinations on the RopeCon System	55
	1 INTRODUCTION	55
	2 SOUND MEASUREMENTS IN FLIRSCH	58
	3 DESIGN DIFFERENCES BETWEEN THE ROPECON SYSTEM AND STANDARD BELT CONVEYORS	58
	4 NOISE EMISSION OF THE ROPECON SYSTEM IN REGARD TO STANDARD BELT CONVEYORS	59
	A.6 Lay?out Considerations for Multiple Driven Belt Conveyor Systems	61
	1 INTRODUCTION	61
	2 DYNAMIC MODEL	62
	3 TEST CASES	64
	4 SIMULATION RESULTS	65
	5 CONCLUSION	67
	6 REFERENCES	67
	B: PNEUMATIC CONVEYING	69
	B1: Profiling the Dilute Phase Flow Parameters of Large Throughput Coke Suction Cranes – A case study	71
	1 INTRODUCTION	71
	2 CURRENT CONVEYING SYSTEM	73
	3 PROPOSED NOZZLE AND INNER PIPE ANALYSIS	76
	4 NOMENCLATURE	77
	5 REFERENCES	78
	B.2 Horizontal dense-phase pneumatic conveying of bulk solids	79
	1 INTRODUCTION	79
	2 MATERIAL AND METHOD	79
	3 RESULTS AND DISCUSSION	81
	4 CONCLUSION	84
	5 NOMENCLATURE	84
	6 REFERENCES	84
	B.3 Investigations on single slugs to explain high pressure loss by horizontal dense-phase pneumatic conveying	87
	1 INTRODUCTION	87
	2 TEST MATERIAL AND CONVEYING EQUIPMENT	87
	3 PRESSURE LOSS	88
	4 INVESTIGATIONS ON SINGLE SLUGS	90
	5 CONCLUSION	96
	6 NOMENCLATURE	97
	7 REFERENCES	97
	B.4 On the Modelling of Pressure Drop for the Dense-Phase Pneumatic Conveying of Powders	99
	1 INTRODUCTION	99
	2 EXPERIMENTAL	99
	3 “STRAIGHT PIPE” PNEUMATIC CONVEYING CHARACTERISTICS	101
	4 MODELLING SOLIDS FRICTION FACTOR USING STRAIGHT PIPE DATA	101
	5 SCALE-UP EVALUATION OF MODELS DERIVED USING STRAIGHT PIPE DATA	102
	6 MODELLING SOLIDS FRICTION FACTOR BY “BACK CALCULATION” METHOD	102
	7 SCALE-UP EVALUATION OF MODELS DERIVED USING “BACK CALCULATION” METHOD	103
	8 CONCLUSION	103
	9 NOMENCLATURE	111
	10 REFERENCES	111
	ACKNOWLEDGEMENT	112
	B.5 Pneumatic Conveying System Design - How good is Your Computer Aided Design Program	113
	1 INTRODUCTION	113
	2 CONVEYING MODE	114
	3 MATERIAL TYPE	115
	4 MATERIAL GRADE	115
	5 PIPELINE BEND GEOMETRY	116
	6 MATERIAL DEGRATION	118
	7 CONVEYING PIPELINE MATERIAL	119
	8 CONCLUSIONS	120
	9 REFERENCES	120
	B.6 Power requirements for pneumatic conveying systems	123
	1 INTRODUCTION	123
	2 POWER PRODUCTION	125
	3 SPECIFIC ENERGY	126
	4 INFLUENCE OF PIPELINE BORE	128
	5 STEPPED BORE PIPELINES	130
	6 CONCLUSIONS	131
	7 REFERENCES	131
	C: SILO AND DRY BULK TERMINAL TECHNOLOGY	133
	C.1 Experimental and design loads ofpressure of bulk materials against silo wall	135
	1 INTRODUCTION	135
	2 ACTING LOADS ON SILO	135
	3 MEASURING THE LOADS	136
	4 RESULTS OF INVESTIGATIONS	137
	5 CHARACTERISTIC AND DESIGN LOADS, COINCIDENCE OF LOADS	137
	6 DETERMINATION OF SAFETY FOR THE SILO STRUCTURE	138
	7 CONCLUSIONS	138
	8 REFERENCES	140
	C.2 Cylindrical corrugated steel silos in Brazil: failure modes	141
	1 INTRODUCTION	141
	2 PROBLEMS WITH CYLINDRICAL METAL SILOS	142
	3 CONCLUSIONS	146
	REFERENCES	147
	ACKNOWLEDGEMENTS	147
	C.3: Avoiding and Curing Hopper Problems	149
	1 INTRODUCTION	149
	2 ENABLING HOPPER FLOW	149
	3 HOPPER INSERTS	150
	4 GRAVITY FLOW	150
	5 HOPPER DESIGN ASPECTS	154
	REFERENCES	160
	C.4 Modern Coal Storage - A Safe and Efficient Storage Solution	161
	1 INTRODUCTION	161
	2 SILO OPERATION	161
	3 THE MAIN CRITERIA IN