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Displaying 21 - 26 of 26 stories.
September 1, 2006
A propane-based AN process makes its commercial debut
This fall, Asahi Chemical Industry Co., Ltd. (Tokyo; edlinks.che.com/6516-541), plans to start up a 70,000-m.t./yr plant for producing acrylonitrile (AN) at its 100% subsidiary Tongsuh Petrochemical Corporation Ltd., (Ulsan, South Korea). The plant will be a renovation of an existing facility, which made AN using the conventional propylene-based (ammoxidation) process, into one that uses...
http://www.che.com/business_and_economics/cost_engineering/A-propane-based-AN-process-makes-its-commercial-debut_3002.html
August 1, 2006
Making Sense of Your Project Cost Estimate
    If your estimate for a project's capital cost is too high or too low, incomplete or wrong, a poorly developed scope is the mostly likely cause. In almost all cases, project cost estimating is more accurate than the scope used to develop the estimate. (To develop a good project scope, please refer to "Get Your Scope Straight for Project Success," CE, February, pp. 36-38). Yet good...
http://www.che.com/business_and_economics/cost_engineering/Making-Sense-of-Your-Project-Cost-Estimate_2805.html
April 1, 2006
How to Estimate Utility Costs
    Typical process utilities include electricity, process steam, refrigerants, compressed air, cooling water, heated water, hot oil, process water, demineralized water, municipal water, and river, lake, or ocean water. For preliminary cost estimates, waste disposal cost can also be treated like a utility expense. Unlike capital, labor, and other expenses, utility prices do not correlate simply...
http://www.che.com/business_and_economics/cost_engineering/How-to-Estimate-Utility-Costs_2798.html
March 1, 2006
Short-Cut Piping Costs
    Engineers often need to predict the cost of piping and pipefitting associated with a process unit. Even though detailed prices are available, finding and organizing them takes time and costs money. For those needing a quick method of approximation (such as for a pre-design estimate), a short-cut piping cost method is presented in this article. For convenience and compactness, the relevant...
http://www.che.com/business_and_economics/cost_engineering/Short-Cut-Piping-Costs_2814.html
March 1, 2006
A powerful algorithm enables end-to-end supply chain optimization
Axxom Software AG (Munich, Germany; edlinks.che.com/5827-541) has introduced a new technological approach that, for the first time, allows an end-to-end supply chain optimization of very large, multi-stage networks. Based on the so-called cost-scaling algorithms (CS-A), production companies can now plan very complex...
http://www.che.com/business_and_economics/cost_engineering/A-powerful-algorithm-enables-end-to-end-supply-chain-optimization_2915.html
January 1, 2006
Pilot Plant Cost Estimating: Make Intelligent Use of Contingency
    The first two installments of this three-part series (CE, November 2005, pp. 40–45, and December, pp. 42–47) dealt mainly with the major methods for estimating the capital costs of pilot plants. This final installment begins with a look at the making of provision for contingency, a concept sometimes misunderstood and even more often misapplied in pilot-plant cost estimating...
http://www.che.com/business_and_economics/cost_engineering/Pilot-Plant-Cost-Estimating-Make-Intelligent-Use-of-Contingency_2794.html
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