Production of fuels and chemicals through microbial fermentation of plant material is a desirable alternative to petrochemical-based production. Fermentative production of biorenewable fuels and chemicals requires the engineering of biocatalysts that can quickly and efficiently convert sugars to target products at a cost that is competitive with existing petrochemical-based processes. It is als...

In this contribution we apply different approaches to solve four rather different MINLP problems: special extensions to time-indexed formulations of production planning problems, a production planning problem in BASF’s petrochemical division, a site analysis of one of BASF’s bigger sites, and a process design problem. The first problem is related to a useful nonlinear extension of production pl...

This report discusses the MARKAL-MATTER results regarding the impact of greenhouse gas policies on the petrochemical industry in Western Europe from an integrated chain perspective. The MARKAL-MATTER model gives insight in how different technologies might develop in the next decades at different emission permit prices. This report first describes the present situation in the petrochemical indus...

Introduction An aromatics complex is a combination of process units that can be used to convert petroleum naphtha and pyrolysis gasoline (pygas) into the basic petrochemical intermediates: Benzene Toluene and Xylenes (BTX). Benzene is a versatile petrochemical building block used in the production of more than 250 different products. Ethylbenzene, cumene, and cyclohexane are the most important ...

petrochemical industries are potentially capable of impacts on environment due to the essence of the activities and producing waste water, pollutant emissions and hazardous wastes. this case study has considered the environmental adverse impacts of petrochemical industries on existing habitats in mahshahr economic special zone with respect to the regional significant biological diversity and ec...

Ñ Anticoking Coatings for High Temperature Petrochemical Reactors Ñ Coke deposition is a major problem for several refinery and petrochemical processes, among which steam cracking for ethylene production. Decreasing coking rates will reduce decoking frequency and will also decrease heat transfer degradation. For these processes, a means of reducing coking phenomena is the application of anticok...

OBJECTIVES To assess the association between petrochemical exposure and spontaneous abortion, a retrospective epidemiological study in a large petrochemical complex in Beijing, China was conducted. METHODS Plant employment records identified 3105 women who were married, were 20-44 years of age, and had never smoked. Of those, 3070 women (98.8%) reported at least one pregnancy. From this group...

This study analyzes a barrier of developing Exchange named lack of information related to performance of organization. This paper proposes a combined approach to decision making that Examine companies financial performance and offers an optimal way to solve the problem of ranking and efficiency survey. FAHP-TOPSIS approach is used to rating companies and FAHP-DEA approach is used for efficiency...

The subject of this work is to study the use of object oriented models of petrochemical plants in order to simplify simulation and production planning. A prototype system for an existing plant was developed to achieve this goal. The prototype system was made using the object oriented programming language Smalltalk/V. The system is generic and allows creating graphical simulation models for most...