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Archives :: Processing & Handling :: Liquid, Gas and Air Handling

Displaying 101 - 120 of 808 stories.
November 1, 2012
Compressors: How to Achieve High Reliability & Availability. By Heinz P. Bloch and Fred K. Geitner. McGraw-Hill. 1221 Avenue of the Americas, New York, NY 10020. Web: mcgraw-hill.com. 2012. 268 pages. $50.00.   Reviewed by Amin Almasi, WorleyParsons Services Pty. Ltd., Australia   Large numbers of compressors fail in CPI (chemical process industries) plants every year, with some experiencing...
http://www.che.com/processing_and_handling/liquid_gas_and_air_handling/compressors/Compressor-book-by-Heinz-Bloch-reviewed-by-WorleyParsons-Almasi_9887.html
November 1, 2012
One of the most significant limitations on the operation of dynamic compressors (axial and centrifugal compressors) is the low-flow limit known as “surge”. A sudden valve closing, such as for emergency shutdowns or for a suction/discharge valve, presents significant challenges to anti-surge valve sizing and selection. Anti-surge valve requirements depend to a large degree on the compressor...
http://www.che.com/processing_and_handling/liquid_gas_and_air_handling/compressors/Anti-surge-Valves-for-Dynamic-Compressors_9903.html
November 1, 2012
The prices of low-voltage variable frequency drives (VFDs) have declined substantially since they were introduced, while the cost of power has increased. Normal project economics will now justify these VFDs — which go up to 375 kW (500 hp) or beyond — for pumps over the largest part of the range of application of the pumps. To efficiently evaluate and apply VFDs, process engineers need to know...
http://www.che.com/processing_and_handling/liquid_gas_and_air_handling/pumps/Variable-Frequency-Drives-for-Centrifugal-Pumps_9904.html
November 1, 2012
The Model G3 Progressing Cavity Pump is designed for handling material with high solids content, and those that are semi-dry or caked. The product features a series of finger mechanisms...
http://www.che.com/processing_and_handling/liquid_gas_and_air_handling/pumps/Handle-semi-dry-or-caked-substances-with-this-cavity-pump_9942.html
November 1, 2012
This company has unveiled an innovative, flush-batten-aluminum geodesic dome design, which may be considered a new paradigm in engineered cover technology. OptiDome features a double web I-Beam for...
http://www.che.com/processing_and_handling/liquid_gas_and_air_handling/tanks_and_vessels/The-next-generation-in-dome-design-debuted-at-Weftec_9925.html
November 1, 2012
The Advanced Cylinder Management (ACM) system is an all-in-one solution for tracking and managing this gas supplier’s entire fleet of gas cylinders. Using specially designed tracking barcodes placed...
http://www.che.com/processing_and_handling/liquid_gas_and_air_handling/tanks_and_vessels/Barcodes-track-cylinders-from-this-company_9939.html
November 1, 2012
The new V Series modulating ball valve is designed for controlling pressure, temperature flow and level. The valve body...
http://www.che.com/processing_and_handling/liquid_gas_and_air_handling/valves/A-new-valve-series-for-control-applications_9919.html
November 1, 2012
By expanding the valve line to include drive sizes up to 130 mm, globe valves, angle seat and diaphragm valves of the Element Series can now be used to achieve fittings up to...
http://www.che.com/processing_and_handling/liquid_gas_and_air_handling/valves/A-new-larger-drive-size-added-to-this-modular-valve-series_9923.html
November 1, 2012
Manual operators are often included on solenoid valves to enable functional checking during startup and commissioning. These operators are then removed prior to the plant being handed...
http://www.che.com/processing_and_handling/liquid_gas_and_air_handling/valves/This-solenoid-valve-operator-is-removable-under-pressure_9935.html
November 1, 2012
The KMX-V Static Mixer is designed to generate superior mixing per unit length for laminar-flow and high- and low-viscosity applications. For extreme-viscosity fluids and extreme volume ratios, the most common...
http://www.che.com/processing_and_handling/liquid_gas_and_air_handling/mixing/Mix-extreme-viscosity-fluids-with-this-mixer_9945.html
October 1, 2012
Fans and blowers are common in air-handling and movement systems used in the chemical process industries (CPI). Two major uses of fans and blowers are in pneumatic conveying systems and in ventilation and air-pollution-control systems. Powering fans and blowers can contribute significantly to costs, and their efficient operation can be affected by the way plant operators select and run their systems...
http://www.che.com/processing_and_handling/liquid_gas_and_air_handling/fans_and_blowers/Fans-and-Blowers_9775.html
October 1, 2012
The QVF Supra-Line is compatible with two proven flange systems — the QVF/WPR2002 and the Schott/KF systems — and thus reduces the number of technically equivalent components required while providing the user with...
http://www.che.com/processing_and_handling/liquid_gas_and_air_handling/piping_and_tubing/A-smart-flange-system-for-increased-safety_9795.html
October 1, 2012
The new Pivotrol PTF4 is a high-capacity, pressure-powered condensate pump that covers a wider motive-pressure range. This new version can be operated by steam, air or other...
http://www.che.com/processing_and_handling/liquid_gas_and_air_handling/pumps/This-concentrate-pump-operates-with-steam-air-or-more_9805.html
October 1, 2012
Today’s chemical processors must cope with rising labor costs, increasing global competition, escalating fuel costs and more-stringent safety and environmental regulations. To improve productivity and reduce costs in today’s competitive environment, many facilities are operating leaner than even before. And, downsizing strategies have seen the reduction of maintenance staff, which often results...
http://www.che.com/processing_and_handling/liquid_gas_and_air_handling/steam_traps/A-Steamy-Situation_9765.html
October 1, 2012
The new RapidDraw3D Valve-model Generator is a free automated valve-assembly model generator that allows users to quickly generate realistic, to-scale three...
http://www.che.com/processing_and_handling/liquid_gas_and_air_handling/valves/A-Web-based-application-for-generating-valve-assemblies_9816.html
September 1, 2012
Sparging refers to the process of injecting a gas through a diffuser into a liquid phase. It is used in both physical and chemical process applications. In physical process applications, the gas is used to either dissolve gas into liquid (such as aeration and carbonation) or to remove contaminants from the liquid phase (such as oxygen stripping, volatile organic compound stripping and water stripping). In...
http://www.che.com/processing_and_handling/liquid_gas_and_air_handling/Gas-Sparging_9681.html
September 1, 2012
There are two main reasons why compressor capacity regulation is used. The most prevalent reason is to adjust the suction flow to match the process demand. The second reason is to save energy. As a rule, capacity control is determined by the compressor discharge pressure. Compressor capacity-control methods are utilized to maintain a required delivery under variable process conditions [1]. In this article...
http://www.che.com/processing_and_handling/liquid_gas_and_air_handling/compressors/Reciprocating-Compressors-Startup-and-Capacity-Control-Methods_9687.html
September 1, 2012
Two new diameters extend the diversity of this company’s modular-pipework system for handling bulk goods, dust extraction and exhaust air. Introducing these two new...
http://www.che.com/processing_and_handling/liquid_gas_and_air_handling/piping_and_tubing/Two-more-sizes-added-to-this-pipework-system_9672.html
September 1, 2012
The Compact Vertical Dosing (CVD) system features a modular design that makes it possible to add or replace fittings and components during, or even after commissioning and without cost-intensive modifications. The...
http://www.che.com/processing_and_handling/liquid_gas_and_air_handling/pumps/A-modular-dosing-system-built-to-match-the-task_9670.html
September 1, 2012
The new E-Series Plastic AODD (air-operated double diaphragm) pumps feature no mechanical seals or packing, thereby eliminating a critical leak point. Instead, these pumps have a stainless-steel containment ring...
http://www.che.com/processing_and_handling/liquid_gas_and_air_handling/pumps/Leaks-are-minimized-in-this-AODD-pump_9673.html
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