Chemical Engineering

Download Principles of Gas-Solid Flows (Cambridge Series in Chemical by Liang-Shih Fan PDF

By Liang-Shih Fan

Gas-solid flows are taken with quite a few commercial strategies and happen in numerous normal phenomena. This authoritative booklet addresses the elemental rules that govern gas-solid flows and the applying of those ideas to varied gas-solid move platforms. The publication is prepared in elements: half I offers with easy relationships and phenomena, together with particle measurement and homes, collision mechanics, momentum move, warmth and mass move, easy equations, and intrinsic phenomena in gas-solid flows. half II discusses gas-solid stream platforms of business curiosity resembling gas-solid separators, hoppers and standpipes, dense-phase fluidized beds, fluidized beds, pneumatic conveying structures, and warmth and mass move in fluidization platforms. As a finished textual content on gas-solid flows, along with end-of-chapter difficulties, this booklet is geared toward scholars, yet may also be valuable to a extensive variety of engineers and utilized scientists. suggestions handbook on hand.

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Typically, the phase Doppler method is good for the measurement of particle sizes ranging from 1 /xm to 10 mm with a variation by a factor of 40 at one instrument setting. As a rule of thumb, the maximum measurable concentration is 1,000 particles per cubic millimeter (mm3). , the phase Doppler particle analyzer (PDPA) (Aerometrics) and the Dantec particle dynamics analyzer (DPDA) (Dantec Electronics). 7 Coulter Principle The Coulter principle underlies a method for determining particle sizes and size distributions using an electrical sensing technique.

A ductile fracture is the failure of the material which is preceded by appreciable plastic deformation and localized reduction in area (necked region). The brittle fracture and ductile fracture are schematically illustrated in Fig. 10. For brittle materials, the compressive strength is usually an order of magnitude greater than the tensile strength, and the fracture occurs by a shearing process [Guy, 1976]. 7. Yield and Tensile Strength of Some Solid Materials Material (a) Metals and alloys Carbon steels ASTM steels Stainless steels Cast aluminum alloys Wrought aluminum alloys Bronze Brass (b) Polymer Nylons PVC-acrylic alloy Polyacetals Polystyrene (c) Ceramics Alumina Electric porcelain Polycrystalline glass Mica Graphite and carbon Yield strength (MPa) Tensile strength (MPa) 177-571 204-340 204-1,800 55-435 27-618 68-410 68-440 320-830 306-680 544-1,900 35-70 68-666 230-660 265-680 58-86 37-44 60-68 34-69 (bending strength) 272-320 34-82 102-170 82-88 4-27 65-86 38-74 60-68 34-69 136-272 14-48 — 34-41 5-108 Source: E.

A ductile fracture is the failure of the material which is preceded by appreciable plastic deformation and localized reduction in area (necked region). The brittle fracture and ductile fracture are schematically illustrated in Fig. 10. For brittle materials, the compressive strength is usually an order of magnitude greater than the tensile strength, and the fracture occurs by a shearing process [Guy, 1976]. 7. Yield and Tensile Strength of Some Solid Materials Material (a) Metals and alloys Carbon steels ASTM steels Stainless steels Cast aluminum alloys Wrought aluminum alloys Bronze Brass (b) Polymer Nylons PVC-acrylic alloy Polyacetals Polystyrene (c) Ceramics Alumina Electric porcelain Polycrystalline glass Mica Graphite and carbon Yield strength (MPa) Tensile strength (MPa) 177-571 204-340 204-1,800 55-435 27-618 68-410 68-440 320-830 306-680 544-1,900 35-70 68-666 230-660 265-680 58-86 37-44 60-68 34-69 (bending strength) 272-320 34-82 102-170 82-88 4-27 65-86 38-74 60-68 34-69 136-272 14-48 — 34-41 5-108 Source: E.

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