Transforming the performance maps to a reduced coordinate system that is independent of suction conditions and rotational speeds allows these curves to be accurately incorporated into a process simulator.
Computational fluid dynamics has moved from mainframes to PCs and laptops. Newer and better software lets you conduct analyses not possible before, and regular engineers, not just experts, can now carry out CFD.
Elli Maria Barampouti, Sofia Mai, Apostolos Vlyssides
Unlike time-consuming conventional methods, this approach to designing a dissolved air flotation (DAF) plant requires only the physical characteristics of the flocs — their size and density, flowrate and temperature.
Physical property values are essential for many chemical engineering tasks. This article reviews sources of physical property data, discusses the use of experimental methods to measure properties, and details several types of estimation techniques.
The challenges of vaccine development are not limited to identification of suitable antigens, adjuvants and delivery methods, but include regulatory, technical and manufacturing hurdles in translating a vaccine candidate to the clinic.
By incorporating the batch standards S88 and S95 into the entire product lifecycle, companies can optimize their processes and project management. This enables them to rapidly get their products to market — a critical factor in staying competitive.
David Hogsett, Youngmi Kim, Michael R. Ladisch, Nathan S. Mosier, Eduardo Ximenes
Biochemical and thermochemical process technologies being developed to convert wood and other lignocellulosic feedstocks to liquid fuels will drive the transition from corn-based ethanol to advanced biofuels.
Bill Carlson, Joe Dumoit, Paul Yanisko, Shiying Zheng
The benefits of nitrogen blanketing include improved process safety, better product quality, and longer equipment life. Here's how to achieve the desired safety or quality results while minimizing costs.
Fieldbus technologies have become increasingly popular in process control applications. This article highlights the practical applications and economics of various buses, so that an engineer can choose the best one for his or her process.
To function properly at optimum capacity and efficiency, multi-pass trays must be designed so that the liquid and vapor flows are properly balanced. This article provides guidance on how to achieve that.
Modular design principles are well known, but have found only niche applications in the Chemical industry. This article outlines an innovative methodology, whereby plant and process design may be conducted in parallel using components with pre-...
An array of nanoscale developments are poised to revolutionize cancer diagnosis and drug discovery efforts, and create new ways to target the delivery of potent, often toxic drug therapies, while reducing their dose-limiting side effects.
A compliance management system (CMS) helps companies meet regulatory reporting requirements, improve environmental performance, reduce environmental compliance costs, and increase organizational efficiency. Here's a run-down of what to look for when...
Decision-makers often require cost estimates for products and processes at the earliest stages of development — when many cost-determining factors remain uncertain. Identifying variables that impact cost estimates, and putting them in context, will...
Updates in this issue include: State of the Union Address Identifies Importance of Manufacturing and Energy to U.S. Economy Scorpions Inspire Tough Surface Nanorods Line Up for Assembly Nanosphere Structure Boosts Light Absorption Zeolite Catalyst...
Brian H. Pittenger, Herman Purutyan, Gabriel I. Tardos
Use these guidelines to avoid potential caking problems. The key steps are to select a material characterization method, identify the factors that can be feasibly controlled and conduct tests to confirm that process/handling changes yield the...
Andrew J. DeDoes, Matthew D. Goetz, Michael J. Misovich
This method reproduces the vapor pressure predictions of the Soave-Redlich-Kwong and Peng-Robinson equation of state with a simple Antoine equation that uses constants derived from critical properties and the acentric factor.