COT 770 Material Properties of Bulk Solids (Early Fall)
Course Content: This course covers various topics related to material properties in relation to handling and storage of bulk solids. The material properties that affect the design of hopper, chute, feeder and pneumatic/mechanical conveying system and also its operation will be discussed. The topics are: sampling, bulk density (loose and packed), particle density, moisture content, moisture sorption characteristics, aeration and deaeration characteristics, permeability, temperature and relative humidity, particle size and shape, particle size distribution and analysis, surface area, sphericity, powder Geldart classification, minimum fluidization velocity, angle of repose, angle of internal friction, cohesion, wall friction, flow property, stickiness, abrasiveness, hardness, corrosiveness, explosiveness, toxicity, odors, caking and agglomeration. The measurement of these properties will be discussed.
COT 771 Storage and Flow of Bulk Solids (Late Fall)
Course Content: This course covers topics related to design of bin, hopper, chute and feeder used in the handling bulk solids. The following topics are covered: Bulk solids flow problems such as cohesive arching, ratholing, bridging, flooding, erratic flow, segregation, flow rate limit, mass flow and funnel flow, caking, spoilage and oxidation; Flow functions, Flow factor (Jenike), Mohr’s Circle, flowability, minimum outlet dimension, hopper angle, design parameters, Janssen theory, different geometry hopper and chute, different feeders, discharge/flow aids, structural design.
COT 772 Pneumatic Conveying of Bulk Solids (Early Spring)
Course Content: This course covers various topics related to pneumatic conveying of powders and bulk solids. The topics are: Different types of pneumatic conveying system such as dilute and dense phase pneumatic conveying, vacuum sequencing, positive and negative pressure systems, pneumatic conveying system components, fluid and particle dynamics, system pressure drop calculation, design of pneumatic conveying systems, situational problems and difficult materials, trouble shooting, blower calculations, solids and gas separation units and design, different types of elbows, particle degradation, elbow wearing, dust collection system (baghouse) design.
COT 773 Instrumentation and Safety of Bulk Solids Handling (Late Spring)
Course Content: This course covers various topics related to safe handling of bulk solids and instrumentation. The topics are: particulate hazards such as combustibility, instability, reactivity and toxicity; hazard scenarios such as thermal and shock instability, chemical incompatibility, particulate fire, dust explosion and toxic material exposure; assessment of hazards such as MSDS, handbooks, guidelines, code and standards and different lab methods, scaling consideration, large scale testing and theoretical modeling; Equipment hazards and preventive/protective measures; Designing systems to prevent and control combustion, explosions, uncontrolled reactions and release of toxic particulate solids; Occupational health and environmental considerations. Other topics related various measuring instrumentation such as pressure, temperature, level, weight, vibrator, flow, humidity.
COT 774 Mechanical Conveying of Bulk Solids (Summer)
Course Content: This course covers various topics related to mechanical conveying of bulk solids and powders. The topics are: Belt conveying design consideration, characteristics and conveyability of bulk materials, typical travel paths, angle of surcharge, belt width, belt speed, capacity, idler spacing, powder requirement, effective tension, pulleys, resistance calculations, belt selection; Bucket elevation design consideration, different types of discharge, selection of chasing, selection of buckets (size and speed), selection of chain and belt, capacity calculation, pullet diameter and speed, power requirement and safety; Screw conveying design considerations, material code, bulk material characteristics, selection of conveyor size and speed, component group, horsepower requirement, torsional rating conveyor screws, horizontal and vertical loading; loading system, air control, conventional transfer chutes, managing wear, flow aids.