1

Solids Conveying Equipment

Ulrich, 2004

• Apron• Auger• Belt• Bucket elevator• Continuous flow• Pneumatic• Vibratory

2

Solids Conveying Equipment

Ulrich, 2004

• Apron• Auger• Belt• Bucket elevator• Continuous flow• Pneumatic• Vibratory

3Ulrich, 2004

4

Heuristics17 Oct 12

5

Solids Conveying Equipment

Ulrich, 2004

• Apron• Auger• Belt• Bucket elevator• Continuous flow• Pneumatic• Vibratory

6

Pneumatic Conveying

Coulson and Richardson’s Chemical Engineering Volume 1, 6th ed.

Significant pressure drop is required to accelerate the solids

7

Pneumatic Conveying

Coulson and Richardson’s Chemical Engineering Volume 1, 6th ed.

Solids are suspended if the gas velocity is above the minimum.

8

Pneumatic Conveying

Coulson and Richardson’s Chemical Engineering Volume 1, 6th ed.

Data for various solids.

9

Pneumatic Conveying

Coulson and Richardson’s Chemical Engineering Volume 1, 6th ed.

Solid particle velocities, us, are related to terminal velocity, uo, and the gas velocity, uG. [all in m/s]

sou

osG

uuu25.7468.0

o

s

air

x

uFu

PP 28052

10

Comminution (size reduction) Equipment

• Compression• Impaction• Attrition (rubbing)• Cutting

11Ulrich, 2004

12Towler & Sinnott, 2008

13Ulrich, 2004

Table 4.5a Criteria and data for rapid design of crushing and grinding equip.

14Ulrich, 2004

Table 4.5a Criteria and data for rapid design of crushing and grinding equip.

15

Comminution (size reduction) Equipment

Jaw Crusher

Gyratory Crusher

16

Comminution (size reduction) Equipment

Roll Crusher

Disk / Attrition Mill

17

Comminution (size reduction) Equipment

Rod Mill

18

Comminution (size reduction) Equipment

Ball Mill

19

Comminution (size reduction) Equipment

Jet Mill

20

Comminution (size reduction) Equipment

Rotary Cutter

21Ulrich, 2004

Table 4.5b Typical materials processed in different types of crushing and grinding equip.

22Towler & Sinnott, 2008

23Wikipedia

24Towler & Sinnott, 2008

25

Agitators and Mixing Equipment

• Suspend solids• Disperse gases and liquids• Emulsify one liquid in another• Promote heat transfer• Blending two or more materials together

26

Ulrich, 2004

Table 4.16 Criteria and Data for the Preliminary Design of Agitators and Mixers

27

Ulrich, 2004

Table 4.16 Criteria and Data for the Preliminary Design of Agitators and Mixers

28

Ulrich, 2004

29

Agitators and Mixing Equipment

Fluid mixing

Coulson and Richardson’s Chemical Engineering Volume 1, 6th ed.

30

Agitators and Mixing Equipment

Fluid mixing: Baffles

Coulson and Richardson’s Chemical Engineering Volume 1, 6th ed.

31

Agitators and Mixing Equipment

Fluid mixing: off-center

Coulson and Richardson’s Chemical Engineering Volume 1, 6th ed.

32

Agitators and Mixing Equipment

Common Impellers

Coulson and Richardson’s Chemical Engineering Volume 1, 6th ed.

33

HeuristicsQuestions?