Chemical Engineering Economics by D.E. Garrett

Chemical Engineering

By D.E. Garrett

Least, the writer needs to thank his continually worthwhile spouse Maggie and his secretary Pat Weimer; the previous for her persistence, encouragement, and for performing as a sounding-board, and the latter who toiled eternally, cheerfully, and such a lot safely at the book's guidance. CONTENTS Preface / iii 1. advent / 1 usually Used financial reviews / 2 simple fiscal topics / three Priorities / three difficulties / 6 Appendixes / 6 References / 6 2. gear rate ESTIMATING / eight brands' Quotations / eight Estimating Charts / 10 dimension Factoring Exponents / eleven Inflation fee Indexes / thirteen set up issue / sixteen Module issue / 18 Estimating Accuracy / 19 Estimating instance / 19 References / 21 three. PLANT fee ESTIMATES / 22 Accuracy and prices of Estimates / 22 rate Overruns / 25 Plant price Estimating components / 26 gear install / 28 Instrumentation / 30 v vi CONTENTS Piping / 30 Insulation / 30 electric / 30 constructions / 32 Environmental regulate / 32 portray, fireplace defense, defense Miscellaneous / 32 backyard advancements / 32 Utilities / 32 Land / 33 development and Engineering fee, Contractor's rate, Contingency / 33 overall Multiplier / 34 entire Plant Estimating Charts / 34 rate consistent with Ton of Product / 35 Capital Ratio (Turnover Ratio) / 35 Factoring Exponents / 37 Plant ameliorations / 38 different parts of overall Capital funding / 38 Off-Site amenities / 38 Distribution amenities / 39 learn and improvement, Engineering, Licensing / forty operating Capital / forty

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Utilities Utilities include the general services required to operate the plant, such as telephone, water, gas, other fuel, steam, compressed air, inert gas, sewage, and PLANT COST ESTIMATES 33 bringing electricity into the plant. These items usually represent a major plant cost, as exemplified by the electrical hookup. It may only require bringing in one outside power supply, or hopefully two, or a standby emergency generator, and installing the necessary high voltage transformers and substations throughout the plant.

1975. Chemical Process Economics. Marcel Dekker, New York:219231. Hydrocarbon Processing Catalog. 1987. , Box 2608, Houston, TX 77001. Kohn, Philip M. 1978. Chemical engineering cost indexes maintain 13-year ascent. Chemical Engineering (May 8). Matley, Jay and Hick, Ann. 1988. CE cost indexes. Chemical Engineering (April 11):711-73. Peters, M. , and K. D. Timmerhaus. 1980. Plant Design and Economicsfor Chemical Engineers. McGraw-Hill, New York:973. Pikulik, Arkadie, and Hector E. Diaz. 1977. Cost estimating for major process equipment.

The CE Index is now at 400. ANSWER. First find an approximate cost for the necessary new vapor recompressors. This requires a rough estimate of the cfm of steam to be "recompressed," which would be (assuming all evaporated water compressed twofold) 70% H20 in sat. soln. 7 psa std. pres. 4 psa final pres. 95 on stream efficiency x 24 hr/d x 60 min/hr 672°R actual temp. 460 0 R std. temp. 36 . 36 . 4 . 7 . In 2 = 4710 HP (see Figure 2-1). 5 . 104 cfm. 5 . 104 . 4 . 7 . 41 with a turbine drive. 3 MM for the total cost of the three compressors.

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