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Design of Generic Coal Conversion Facilities: Indirect Coal Liquefaction, Fischer-Tropsch Synthesis - 1991

W. M. Kellogg Company

Table of Contents

Section 1
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1.0

Introduction

1

2.0

Fischer-Tropsch Reaction

2
 

2.1

Feedstocks and Stoichiometry

2

2.2

Product Distribution

3

3.0

Reactor Types

4
 

3.1

Fixed Bed Reactors

4

3.2

Bubble Column Slurry Reactors

6

3.3

Fluidized Bed Systems

10

3.4

Others

11

3.5

Comparison of Reactors

12

4.0

South African Experience in Fixed and Fluidized Bed Technologies

17

Section 2
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5.0

Rheinpreussen - Koppers Slurry Bed Demonstration Plant

22

6.0

Hydrodynamics of Fischer-Tropsch Bubble Column Reactors

29
 

6.1

General

29

6.2

Flow Regimes

29

6.3

Gas Holdup and Bubble Size Distribution

31

6.4

Mass and Heat Transfer

33

6.5

Effect of Liquid Velocity

35

6.6

Foaming

35

7.0

Fischer-Tropsch Catalysts

39
 

7.1

Types of Catalysts

39

7.2

Catalyst Activity and Selectivity

40
 

7.2.1

Anderson-Schulz-Flory Distribution

40

7.2.2

Comparison of catalyst Activities and Selectivities

42

7.3

Catalyst Activation and Pretreatment

47

7.4

Catalyst Deactivation Due to Poisons

48

7.5

New or Modified Catalysts

49

Section 3
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8.0

Mass Transfer and Kinetics for Fischer-Tropsch Reaction Systems

50

9.0

Catalyst Wax Separation

56

10.0

Future Direction

59

11.0

Scale-up of Bubble Column Fischer-Tropsch Reactors

61

12.0

Recommendations

65

13.0

Literature Cited

68

Appendix A:

Discussion with Prof. Dragomir Bukur

Appendix B:

LaPorte Methanol Plant Visit: Summary of Discussion and Observation