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Economic Evaluation of the Coproduction of Methanol and
Electricity with Texaco Gasification-Combined-Cycle Systems
Final Report - January 1982.

Brown, R. E.
  Delaney, R. C.
Hsu, W. W.
Ravikumar, R. H.
Smeiser, S.C.
Stock, R. M.

Flour Engineers and Constructors, Inc.

(Sections 1, 2 and 3, Pages i to 95, 3.37MB)
(Sections 4, 5, 6 and 7, Pages 96 to 232, 4.59MB)

Table of Contents

Sections 1 - 3.pdf
Section 1 Introduction 1-1
  Purpose of the Study 1-1
Description of the Case Studies  1-3
Technical Criteria   1-5
References  1-10
Section 2 Discussion of Technical Results 2-10
  General Discussion 2-1
 Potential Improvements   2-6
Section 3 Plant Descriptions Case A2 Base Case for Cost of Electricity with 1500 PSIG/900F 3-1
  Process Steam and 2000F Gas Turbines 3-1
General  3-1
Coal Handling. Pulverization, and Slurry Preparation  3-7
Oxidant Feed  3-11
Equipment Notes  3-11
Gasification and Ash Handling  3-15
Energy Recovery    3-16
Particulate Removal   3-17
Equipment Notes  3-17
Gas Cooling  3-21
Equipment Notes    3-21
Acid Gas Removal     3-25
Refrigeration System    3-26
Equipment Notes  3-26
Sulfur Recovery  3-29
Equipment Notes  3-30
Tail Gas Treating   3-33
Equipment Notes  3-35
Tail Gas Treating 3-33
Equipment Notes    3-35
Steam, Boiler Feedwater and Condensate  3-39
 Combustion Gas Turbine  3-43
Equipment Notes 3-43
Heat Recovery Steam Generator and Steam Turbines       3-47
Equipment Notes    3-49
Cooling Eater Systems   3-53
General Facilities  3-53
Plant and Instrument Air  3-54
Potable and Utility Water  3-54
Fuel System  3-54
Nitrogen System 3-54
Effluent Water Treating   3-55
Flare System 3-56
Fire Water System  3-56
Buildings     3-56
Railroad Unloading and Loading     3-57
Electrical System  3-57
Sections 4 - 7.pdf
Section 4 Plant Descriptions Cases B2 Low-Conversion Methanol Plant with COS Hydrolysis  
  Unit/1500 PSIG Saturated Steam and 2000F Gas Turbines 4-1
General      4-7
Oxidant Feed     4-7
Equipment Notes      
Gasification and Ash Handling    4-11
Energy Recovery      4-12
Particulate Removal     4-13
Equipment Notes   4-13
Gas Cooling  4-17
Equipment Notes   4-17
Acid Gas Removal  4-21
Refrigeration System   4-22
Equipment Notes  4-22
Sulfur Recovery    4-25
Equipment Notes    4-26
Tail Gas Treating  4-29
Equipment Notes 4-31
Zinc Oxide Treatment    4-35
Methanol Plant       4-39
Equipment Notes      4-40
Steam, Boiler Feedwater, and Condensate  4-41
Combustion Gas Turbine    4-47
Equipment Notes 4-47
Heat Recovery Steam Generator and Steam Turbines 4-51
Equipment Notes  4-55
Section 5 Process Discussion  5-1
  Performance Comparisons  5-1
Gasifier Material Balance 5-3
Process Energy Balances 5-6
Power Consumption Summary 5-6
Section 6 Capital and Operating Cost Estimates  6-1
  Plant Facilities Investment 6-1
Comparison of Cases A2 and EXTC-79   6-1
Discussion of Methanol Coproduction 6-6
Oxidant Feed 6-6
Gas Cooling  6-6
Acid Gas Removal 6-7
COS Hydrolysis 6-7
Sulfur Recovery Units 6-7
ZnO Treating 6-8
Total Capital Requirement  6-8
Operating and Maintenance Costs  6-11
Section 7 Financial Analysis 7-1
  Cost of Electricity Estimates for Case A2 7-3
Cost Estimates for Methanol Coproduction (case B2)  7-8
Sensitivity Analyses 7-15