TRIMELLITIC AND PYROMELLITIC ANHYDRIDES

Transcription

1 Report No. 66 TRIMELLITIC AND PYROMELLITIC ANHYDRIDES by HAROLD W. SCHEELINE November A private report by the PROCESS ECONOMICS PROGRAM STANFORD RESEARCH INSTITUTE MENLO PARK, CALIFORNIA

2 CONTENTS 1 INTRODUCTION SUMMARY..., INDUSTRY STATUS PSEUDOCUMENE General Background on Process Process Description Process Discussion Cost Estimates Capital Costs Production Costs DURENE General Background and Chemistry Review of Processes Production of Durene from Pseudocumene Process Description Methylation of Pseudocumene Process Discussion Cost Estimates Capital Costs Production Costs TRIMELLITIC ANHYDRIDE Introduction... Chemistry... Review of Processes... Nitric Acid Oxidation... SO, Oxidation... Air Oxidation... Process Description... Process Discussion... Cost Estimates... Capital Costs... Production Costs V

3 CONTENTS 7 PYROMELLITIC DIANHYDRIDE Introduction Chemistry Vapor-phase Air Oxidation of Durene Other Routes to PMDA Review of Processes Process Description Process Discussion Cost Estimates Capital Costs Production Costs APPENDIX A DESIGN AND COST BASIS , APPENDIX B PHYSICAL DATA APPENDIX C PRODUCT SPECIFICATIONS APPENDIX D PRODUCT TOXICITY AND HANDLING CITED REFERENCES PATENT REFERENCES BY COMPANY vi

4 ILLUSTRATIONS Effect of Operating Level and Plant Capacity on Production Cost of Pseudocumene Methylation of Pseudocumene Effect of Operating Level and Plant Capacity on Production Cost of Durene Effect of Operating Level and Plant Capacity on Production Cost of Trimellitic Anhydride Pyromellitic Dianhydride Production ,... Effect of Operation Level and Plant Capacity on Production Cost of Pyromellitic Dianhydride vii

5 TABLES Summary of Economics... 7 Commercial Plants for Pseudocumene and Durene Commercial Plants for Trimellitic Anhydride Commercial Plants for Pyromellitic Dianhydride Composition of C, Aromatics in Reformate Composition of qo Aromatics in Reformate Relative Volatilities Used in Pseudocumene Recovery Design Major Process Equipment and Utilities Summary Stream Flows Total Capital Investment Production Cost Composition of Durene Concentrates Equilibrium Concentrations of Methylbenzenes at 700'F Disproportionation, Transalkylation, Isomerization, and Alkylation Processes to Production C$ Aromatics Patent Summary Patent Summary Methylation of Pseudocumene Major Process Equipment and Utilities Summary Methylation of Pseudocumene Stream Flows Major Process Equipment and Utilities Summary Stream Flows Total Capital Investment ix

6 TABLES Durene Production Production Costs...., Trimellitic Acid and Anhydride By Processes Other Than Liquid-Phase Air Oxidation Trimellitic Acid and Anhydride By Liquid-Phase Air Oxidation Major Process Equipment and Utilities Summary Stream Flows Total Capital Investment Production Costs Pyromellitic Dianhydride by Vapor-Phase Oxidation Pyromellitic Dianhydride Purification Pyromellitic Dianhydride Purification Major Process Equipment and Utilities Summary Pyromellitic Dianhydride Production Stream Flows Pyromellitic Dianhydride Production Total Capital Investment Pyromellitic Dianhydride Production Production Costs....., X