Separation of mixtures chemicals, ubiquitous in chemical and petrochemical industries, by distillation is energy intensive. Nearly 3% the overall used for United States. Improving process crucial making industries more sustainable. However, designing sequences challenging because choice set vast, equations governing physical are highly nonconvex. Traditional design practices rely on heuristics ...

The article presents the results of a study effective methods for development full-scale models technological equipment chemical and petrochemical industries based on use additive manufacturing. It is shown that 3D printing can be used to prepare test various elements heat mass transfer devices with great accuracy in shortest possible time. concluded manufacturing allows significant efficiency ...

Laccases are an interesting group of multi copper enzymes, which have received much attention of researchers in last decades due to their ability to oxidize both phenolic and non-phenolic lignin related compounds as well as highly recalcitrant environmental pollutants. This makes these biocatalysts very useful for their application in several biotechnological processes. Such applications includ...

Due to the sublimation and perfection of human knowledge in economics, the concept of efficiency developed in the past two decades and the measurement of it, based on different theories and practice. In economics, efficiency means the maximum of possible output from a certain amount of input. The efficiency is very important for developing countries Because these countries face to a shortage of...

Natural gas is a main source of energy in Iran, and optimal allocation to different sectors crucial, based on realities, geopolitical considerations, national security concerns. In this paper, multi-objective goal programming model developed study the resource various consumption sectors, including household business, industry, petrochemical power plants, injection oil fields, export from Iran ...

an important issue in power generation and petrochemical industries is the monitoring of pipe wall thickness and corrosion/erosion rate. the pipes are usually subject to erosive and/or corrosive environments and any failure could be catastrophic. while periodic manual ultrasonic thickness measurement is the common practice in many industries, in certain cases, where higher accuracies are requir...