Technology expands flowmeter capabilities, reduces costs
Capacitance-type magnetic flowmeters have traditionally offered the advantage of having non-wetted electrodes and the ability to measure low conductivity fluids. However, they suffered from a sensitivity to flow noise and zero instability. Innovative technology overcomes these limitations and drives magnetic flowmeters into new areas of application, while reducing installed costs.
Spray Gas Quench Design Considerations
The use of spray nozzles to rapidly cool or quench gas streams is an essential application in many industrial processes, such as chemical reaction vessels, incineration, and power plant absorber gas inlet. An optimized spray quench design requires engineering analysis of the operating environment, spray nozzle performance and process reliability.
This technical paper describes the design considerations for spray gas quench systems such as nozzle selection, process control, system configuration and reliability. Application of this knowledge can result in a gas quench system that operates efficiently and reliably with reduced vessel size, reduced atomization energy consumption, and minimized downtime, to achieve capital and operational cost savings for your process.
Special Report: Heat Transfer Fluids: Do's, Don'ts, and Best Practices
Heat transfer fluids -- from mineral oils to synthetic and organic-based formulas -- are the lifeblood of many critical operations within the process industries. This special, interactive PDF looks at how plant personnel can better understand various fluids and fluid properties, and track the performance of their entire heat transfer system.
Welded vessels play a key role in most processes. However, few plants now have in-depth expertise in materials selection, fabrication and design of such vessels. As a result, plant staff often make errors that can be costly as well as compromise the suitability and life of the vessel. This three-part special report provides practical pointers that can help you avoid common mistakes and get the most appropriate, durable and cost-effective vessel.
Part 1 looks at a dozen important factors to consider in materials selection, including metal selection and appropriate use of corrosion allowances and coatings. It includes pointers gleaned from first-hand experiences that can help you avoid costly mistakes and delays.
Part 2 provides tips on how to avoid delays and achieve savings in the fabrication process. It also covers techniques that can improve vessel reliability and thus forestall costly repairs down the road.
Part 3 gets into design issues. It condenses the 5,000+ pages of the ASME Boiler and Pressure Vessel Code into a simple guide when specifying vessels, heat exchangers and tanks. It focuses on 10 key factors.
Download your Chemical Processing special report now.
Special Report -- Control With Flow
With changes in temperature, pressure, density and viscosity all affecting volumetric flowmeter measurement, how can continuous processors accurately measure the flow of fluids? Download this Special Report to find out how Coriolis flowmeters provide a direct mass measurement that is unaffected by changing process fluid characteristics improving both accuracy and optimizing operations at your plant.
Sight Flow Indicators Handbook
L.J. Star’s new 13-page engineering handbook covers the selection and application of sight flow indicators in chemical and pharmaceutical applications. There are many types of sight flow indicators, and the choice of which type is best for a particular application and process system is discussed in detail. A handy reference for experienced engineers and a useful guide for those new to sight flow indicators, it offers a full overview of sight flow indicators, covering design, materials, types of indication, types of glass, accessories, plus installation and maintenance tips.
Pitfalls of pump piping
This white paper goes over the three major problems associated with poor pump piping and provides five rules to follow in order to avoid future pitfalls.
Ross Mackay Associates Ltd.
Oxygen in cell culture/venting ozonated vessels
This white paper outlines trends and opportunities for gasket standardization in processing plants ... including the potential for more reliable sealing, cost savings, inventory reduction, easier installation and safety practices. Steps are outlined for achieving success in gasket standardization across steel, glass-lined and FRP piping.
W. L. Gore & Associates, Inc.
Not All CPVC Piping Systems Perform The Same
Since its introduction to the market in 1959 by The Lubrizol Corp., chlorinated polyvinyl chloride (better known as CPVC) has proven to be an attractive alternative to traditional metallic piping systems in a wide variety of chemical process environments. Because it is inert to most mineral acids, bases, salts and aliphatic hydrocarbons, it offers a more reliable, long-term performance than many other materials, including metals and most non-metallic alternatives.
This white paper will explain why Lubrizol's newly developed Corzan CPVC Piping Systems are pressure rated 25% higher than traditional CPVC systems. Download now.
New Developments in Process Heating Using Microwave Technology
The use of microwave technology has come a long way since its debut decades ago. See why chemical processors should be considering the many benefits of using microwave compared to conventional heating and drying systems. Learn why microwave mixing will save you considerable time and money with a superior product quality.
Guidelines for Proper Filtration and Delivery of Samples to On-Line Process Analyzers
Contaminants in plant samples are the most frequent cause of problems with on-line analyzers. Trace contaminants can rapidly build up and cause instrument failure. It’s critical that a filter specifically designed for sampling applications be used rather than a general purpose filter. Read guidelines to ensure proper filtration and sample delivery to on-line analyzers in this white paper.
Five Keys to Avoiding Ethylene Valve Failures
This concise, compelling overview of best practices in purchasing and maintaining ethylene valve packages is an essential read for industry professionals. The white paper will tell you how to: 1) Select the right seats and seals; 2) Select the right coating materials; 3) Know the quality of the valves you're buying; 4) Find a trusted single resource for your valve package purchases; 5) Keep up with required maintenance.
Electro-hydraulic system design: Making the right system choices
Designers who understand and can take advantage of the differences between fluid power and traditional electromechanical power can build machines that produce higher quality output with lower lifecycle costs. This white paper suggests that care must be taken, however, in selecting and sizing the hydraulic system elements and in tuning the motion controller for optimal performance.
When thinking of the processing of chemicals, we think of any activity including storing, using, handling, manufacturing, or moving chemicals at a site, and any combination of these activities. A common state in many of these activities is the flow - or rate - at which the chemicals are moving through a process. Accurately measuring flow can be a challenge for many chemical processors since so many factors can influence the chemical properties and subsequently the rate of flow. In this Chemical Processing Pressure eHandbook, we discuss considerations for flow management including:
Pressure transmitters - how noise can pinpoint process problems
The use of orifice plates - how insufficient flow conditioning often undermines measurement accuracy
Robust Inferential Sensors - easier-to-develop-and-maintain sensors offer significant benefits for chemical processes
Download your copy of this Chemical Processing Pressure eHandbook now.
In addition to flow pressure, volume and material state, achieving and maintaining desired flow performance depends upon properly addressing some complicated design and operational issues. In this Chemical Processing Flow eHandbook, we identify strategies and solutions for aerodynamic, technical, mechanical and economic constraints including:
Hydrogen systems – Inspections and tests for ensuring safety and flow Axial compressors – achieving and maintaining desired performance Fight flow recirculation – why the phenomenon occurs in centrifugal pumps and how to correct it
Learn more about these best flow practices. Download your copy of this Chemical Processing Flow eHandbook now.
Design Tips for Sensing Probes
This application note from Delta Controls outlines selection and installation criteria for using admittance probes to monitor the level of powders, liquids and other materials. Dielectric constants of more than 200 materials are included.
Design Considerations for High Liquid Rate Tray Applications
Except for a few odd services, high liquid rate applications are typically the domain of either trays or random packings. Aside from the distributors, random packing designs are rather straightforward with the designer choosing the proper size to accommodate the fluid flow rates and achieve the desired efficiency. Trays, on the other hand, have a large variety of adjustable parameters and can be especially complex, especially when designed for high liquid rate applications.