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Chemical Bandwidth Study Chemical Bandwidth Study Exergy Analysis: A Powerful Tool for Identifying Process Inefficiencies in the U.S. Chemical Industry Industrial Technologies Program DRAFT Summary Report December 2006 Study conducted for the U.S. Department of Energy by JVP International, Incorporated and Psage Research, LLC Summary report prepared by Energetics Incorporated Preface The U.S. Department of Energy, Office of Energy Efficiency and Renewable Energy (DOE/EERE), Industrial Technologies Program (ITP) supports research and development (R&D) to improve the energy efficiency and environmental performance of industrial processes. The program's primary role is to invest in high-risk, high-value R&D projects that will reduce industrial energy requirements while stimulating economic productivity and growth. ITP's Chemicals subprogram supports R&D relevant to the chemical industries. This study, which focuses on energy efficiency in the chemical industry, was initiated in FY2003 by Dr. Dickson Ozokwelu, Lead Technology Manager, ITP Chemicals subprogram, to help guide research decision-making and ensure that Federal funds are spent effectively. The study was overseen by both Dr. Ozokwelu and Dr. Joseph Rogers of the American Institute of Chemical Engineers (AIChE), with analytical studies performed by Psage Research, LLC and JVP International. The intent of the study is to apply energy and exergy analysis to selected chemical manufacturing processes to determine sources of inefficiency and to locate potential process-specific areas for energy recovery. Front-end analysis was performed by Psage Research, LLC, using various software tools developed by Psage, Jacobs Engineering of the Netherlands, and AspenTech (Aspen Plus, and the AspenPEP library, a collaboration between AspenTech and SRI's PEP program). JVP International reviewed and further analyzed the results to prepare recommendations for future research. The study provides valuable insights into potential targets for the development and adoption of advanced, energy- efficient technologies in chemicals manufacture. It will be an important tool at DOE for assessing future directions in chemicals R&D conducted under the ITP Chemicals subprogram. This summary is a condensation of a much larger work, and does not contain the comprehensive data sets generated in that effort. Questions concerning the original work or this summary report can be directed to the authors shown below. Dickson Ozokwelu Joseph Porcelli Peter Akinjiola U.S. Department of Energy JVP International, Incorporated Psage Research, LLC Industrial Technologies Program 102 Lincoln Street 234 Village Walk Drive 1000 Independence Ave, S.W. Staten Island, NY 10314 Macungie, PA 10314 Washington, DC 20585 Phone : 917-912-9804 Phone: 610-966-7106 Phone: 202-586-8501 Email : [email protected] Email: [email protected] Email: [email protected] This report is available on-line at www.eere.energy.gov/industry/chemicals. Chemical Bandwidth Study Summary Report i Chemical Bandwidth Study Summary Report ii Table of Contents Introduction Overview of Chemical Industry Energy Use ........................................................................ 1 Objectives of the Analysis .................................................................................................... 2 Methodology Energy Bandwidth Analysis ................................................................................................. 3 Introduction to Exergy Analysis ........................................................................................... 5 Selection of Chemical Processes .......................................................................................... 8 Energy and Exergy Modeling Methodology......................................................................... 11 Model Integration............................................................................................................. 11 Unit Processes and Equipment......................................................................................... 12 Model Output................................................................................................................... 13 Limitations of the Approach ................................................................................................. 14 Summary of Results Overview of Results.............................................................................................................. 15 Trends Observed in the Bandwidth Analysis Results………………………………………17 Chemical Bandwidth Profiles ............................................................................................... 19 Ethylene .........................................................................................................................................20 Chlorine .........................................................................................................................................21 Sulfuric Acid ..................................................................................................................................22 Hydrogen .......................................................................................................................................22 Ammonia ........................................................................................................................................23 Ethylene Oxide...............................................................................................................................23 Propylene.......................................................................................................................................24 Terephthalic Acid...........................................................................................................................24 Carbon Black .................................................................................................................................25 Methyl Tert-Butyl-Ether (MTBE)...................................................................................................25 Methanol ........................................................................................................................................26 Acrylonitrile (ACN)........................................................................................................................27 Ethylene Dichloride .......................................................................................................................28 Formaldehyde ................................................................................................................................28 Phenol............................................................................................................................................29 Nitric Acid......................................................................................................................................30 Propylene Oxide.............................................................................................................................30 Soda Ash ........................................................................................................................................31 p-Xylene .........................................................................................................................................31 Styrene ...........................................................................................................................................32 Ethylbenzene ..................................................................................................................................33 Ethylene Glycol..............................................................................................................................34 Vinyl Chloride ...............................................................................................................................34 Methyl Methacrylate ......................................................................................................................35 Carbon Dioxide..............................................................................................................................35 Oxygen ...........................................................................................................................................36 Nitrogen .........................................................................................................................................36 Urea ...............................................................................................................................................37 Phosphoric Acid.............................................................................................................................37 Vinyl Acetate (VAM) ......................................................................................................................38 Ammonium Nitrate.........................................................................................................................38 Chemical Bandwidth Study Summary Report iii Caprolactam ..................................................................................................................................39 Acetic Acid .....................................................................................................................................39 Hydrochloric Acid..........................................................................................................................40
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