PROCESS ECONOMICS PROGRAM

Transcription

1 7 Report No. 34 PHTHALIC ANHYDRIDE by LLOYD M. ELKIN contributions by Kenneth E. Lunde March 1968 A private report by the PROCESS ECONOMICS PROGRAM STANFORD RESEARCH INSTITUTE MENLO PARK, CALIFORNIA

2 CONTENTS 1 INTRODUCTION SUMMARY INDUSTRY STATUS CHEMISTRY PHTHALIC ANHYDRIDE FROM o-xylene: FIXED-BED LOW-TEMPERATURE HIGH-SPACE-VELOCITY PROCESS... Review of Processes... Process Description... Process Discussion... Capital Costs....'.. Production Cost PHTHALIC ANHYDRIDE FROM o-xylene: FIXED-BED LOW-TEMPERATURE LOW-SPACE-VELOCITY PROCESS... Review of Processes Process Description Process Discussion Capital Costs Production Cost 1' PHTHALIC ANHYDRIDE FROM NAPHTHALENE: FIXED-BED LOW-TEMPERATURE LOW-SPACE-VELOCITY PROCESS... Review of Processes... Process Description... Process Discussion... Capital Costs... Production Cost PHTHALIC ANHYDRIDE FROM o-xylene: FIXED-BED HIGH-TEMPERATURE HIGH-SPACE-VELOCITY PROCESS... Review of Processes Process Description Iii

3 CONTENTS PHTHALIC ANHYDRIDE FROM NAPHTHALENE: FIXED-BED HIGH-TEMPERATURE HIGH-SPACE-VELOCITY PROCESS Review of Processes... Process Description... Process Discussion... Capital Costs... Production Cost... PHTHALIC ANHYDRIDE FROM o-xylene: FLUID BED PROCESS Review of Processes Process Description Process Discussion Capital Costs Production Cost..... a 140 PHTHALIC ANHYDRIDE FROM NAPHTHALENE: FLUID BED PROCESS Review of Processes Process Description Process Discussion Capital Costs Production Cost... v RECOVERY AND PURIFICATION OF PHTHALIC ANHYDRIDE.... Review of Processes , Recovery of Phthalic Anhydride as a Dust or Slurry... Process Description--Condensation as Dust Process Discussion--Condensation as Dust.,..... Capital Costs--Condensation as Dust , OTHER PROCESSES APPENDIX A DESIGN AND COST BASIS..., APPENDIX B PHYSICAL DATA , APPENDIX C PRODUCT, RAW MATERIAL, AND CATALYST SPECIFICATIONS iv

4 CONTENTS APPENDIX D HANDLING AND SAFETY CITED REFERENCES SUPPLEMENTAL REFERENCES V

5 ILLUSTRATIONS Sequence of Reactions in the Catalytic Oxidation of Naphthalene or o-xylene ,..,..... Detailed Reaction Mechanism (Speculative) for the Catalytic Oxidation of o-xylene Production Cost Variation Production Cost Variation..,...,....., Production Cost Variation , ,.... Production Cost Variation , Vii

6 ILLUSTRATIONS 11.2 Production Cost Variation Recovery of Phthalic Anhydride by Condensation as Dust viii

7 TABLES Summary of Processes Evaluated Summary of Costs of Evaluated Processes , 7 Comparison of Processes with Fixed Capital Amortized in a Two-Year Period Plant Capacity United States Plant Capacity The Americas Outside the United States Plant Capacity Europe Plant Capacity Asia, Australia, and South Africa Major Process Equipment List....., Stream Flows Utilities Summary Process Unit and Utilities Investment Total Capital Investment ix

8 TABLES Production Costs , , 50 Summary of Processes Major Process Equipment List , 61 Stream Flows Utilities Summary Process Unit and Utilities Investment...., Total Capital Investment Production Costs Fixed-Bed Processes Summary of Patents es Summary of Processes , X

9 TABLES Stream Flows Process Unit and Utilities Investment Total Capital Investment Production Cost of Phthalic Anhydride Summary of Processes Major Process Equipment List Stream Flows., Utilities Summary Process Unit and Utilities Investment Total Capital Investment Xi

10 TABLES Production Costs Summary of Processes Major Process Equipment List Stream Flows Utilities Summary Process Unit and Utilities Investment Total Capital Investment Production Costs Major Process Equipment List Stream Flows xii

11 TABLES Utilities Summary Process Unit and Utilities Investment Total Capital Investment Production Costs Condensation of Phthalic Anhydride Summary of Processes Thermal or Chemical Treatment of Crude Phthalic Anhydride Summary of Processes ,. 170 Distillation of Phthalic Anhydride Summary of Processes Recovery of Phthalic Anhydride from Still Residue Summary of Processes Recovery of Phthalic Anhydride as a Dust or Slurry Summary of Patents Recovery of Phthalic Anhydride by Condensation as Bust Major Process Equipment List Recovery of Phthalic Anhydride by Condensation as Dust Utilities Summary Recovery of Phthalic Anhydride by Condensation as Dust Stream Flows Recovery of Phthalic Anhydride by Condensation as Dust Process Unit and Utilities Investment xiii