Abstract

3

Objectives

4

Approach

4

Accomplishments

4

1.

Introduction

4

2.

Approach

5

3.

Results and Discussion

6

3.1

Synthesis and Characterization of Novel CO2-Selective Membranes

6

3.2

Modeling of Membrane Reactor

9

3.2.1

Model Development

9

3.2.2

Molar Balance

11

3.3

Autothermal Reforming Syngas

14

3.3.1

Reference Case

14

3.3.2

Effect of CO2/H2 Selectivity

16

3.3.3

Effect of CO2 Permeability

17

3.3.4

Effect of Sweep-to-Feed Ration

18

3.3.5

Effect of Inlet Feed Temperature

19

3.3.6

Effect of Inlet Sweep Temperature

20

3.3.7

Effect of Feed Pressure

22

3.3.8

Effect of Catalyst Activity

22

3.4

Steam Reforming Syngas

23

3.4.1

Reference Case

23

3.4.2

Effect of CO2/H2 Selectivity

26

3.4.3

Effect of CO2 Permeability

26

3.4.4

Effect of Sweep-to-Feed Ratio

27

3.4.5

Effect of Inlet Feed Temperature

28

3.4.6

Effect of Inlet Sweep Temperature

29

3.4.7

Effect of Feed Pressure

31

3.4.8

Effect of Catalyst Activity

31

3.5

Modeling of Membrane Reactor Using Membrane Data Obtained

32

3.5.1

Laboratory Membrane Reactor (“Small Cell”) Experiments

34

3.5.2

“Big Cell” Membrane Reactor Experiments

36

3.5.3

Effective Removal of CO2 from Syngas

39

3.5.4

Methanation of Treated Syngas to Achieve <10 ppm CO

41

3.6

Effects of Catalyst Activation

42

3.7

Effects of Catalyst

43

3.8

Effects of Temperature

44

3.9

Effects of Flow Rate

45

4.0

Conclusions

45

5.0

Nomenclature

46

6.0

References

47

7.0

Acronyms

53