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Removal of Trace Contaminants from Coal-Derived Synthesis Gas - March 2003

Air Products and Chemicals, Inc.
Eastman Chemical Company

In this pdf format, this document has 87 pages and is 3.59MB.

Table of Contents

Abstract

ii

Acronyms and Definitions iv
Executive Summary 1

A

Introduction 3

B

Results and Discussion 5
 

1

Evaluation of Various Classes of Syngas Contaminants as Methanol Catalyst Poisons 5
 

1.1

General Procedures for Syngas Contaminant Evaluation 5

1.2

Arsenic-Containing Contaminants 6

1.3

Phosphorus-Containing Contaminants 9

1.4

Sulfur-Containing Contaminants 10

1.5

Nitrogen-Containing Contaminants 13

1.6

Halide-Containing Contaminants 15

1.7

Volatile Metal Carbonyls 17

1.8

Evaluation of "Self-Poisoning" 20

1.9

Poison Comparison 20

2

Adsorbents for the Removal of Catalyst Poisons from Syngas 23
 

2.1

Adsorbent Screening 23

2.2

Evaluation of Copper-Impregnated Carbon (CuO/C) Adsorbent 27

2.3

Evaluation of Cu/C for Other Syngas Contaminants 34

2.4

Alternate Adsorbents 36

3

Analytical Results from Kingsport Samples 39
 

3.1

Kingsport Catalyst Campaign 1 40

3.2

Kingsport Catalyst Campaign 2 40
 

3.2.a

Catalyst Analysis 41

3.2.b

Mineral Oil Analysis 49

3.3

Kingsport Catalyst Campaign 3 51

3.4

Kingsport Catalyst Campaign 4 55

4

LPMEOH~ Demonstration Unit Contaminant Removal Configurations and Trials 55
 

4.1

Impurity Removal Upstream of the LPMEOHTM Demonstration Unit 55

4.2

LPMEOH~ Demonstration Unit Catalyst Guard Bed (29C-40) Configuration 56

4.3

Catalyst Guard Bed Adsorbent Trial 59

4.4

Catalyst Guard Bed Analysis 59

5

Effect of Trace Contaminants on Catalyst Life in the LPMEOH~ Demonstration Unit 65
 

5.1

Overview of Trace Contaminant Issues at the LPMEOH~ Demonstration Unit 65

5.2

Catalyst Performance: Catalyst Campaign 1 66

5.3

Catalyst Performance: Catalyst Campaign 2 67

5.4

Catalyst Performance: Catalyst Campaign 3 70

5.5

Catalyst Performance: Catalyst Campaign 4 71

C

Conclusions 72

D

References 76
 
APPENDICES

APPENDIX A

Experimental Techniques 77