Offshore Communications
AccountGuest Edition My Account My Che.com Log In

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

Displaying 1 - 20 of 795 stories.
April 1, 2014
In an integrally geared centrifugal compressor (Figure 1), several impellers are mounted on the ends of high-speed pinion shafts, which are rotated by a bull-gear. Each impeller’s casing is mounted directly on the horizontally split gear casing. As is the case for any turbomachinery type used in the chemical processing industries (CPI), there are advantages and disadvantages associated with the use...
http://www.che.com/processing_and_handling/liquid_gas_and_air_handling/compressors/Integrally-Geared-Compressors-in-the-CPI_11626.html
April 1, 2014
Pressure variations resulting from the oscillatory flow patterns found in positive-displacement machinery, especially reciprocating compressors, are referred to as “pulsations.” Found in both liquid- and gas-handling systems, pulsations are a common phenomenon in the chemical processing industries (CPI). Operational problems associated with pulsations include resonance conditions, high...
http://www.che.com/processing_and_handling/liquid_gas_and_air_handling/compressors/Protecting-Against-Compressor-Pulsations_11629.html
March 1, 2014
New Mono-Stack fume exhaust fans provide pollution abatement, re-entrainment prevention, odor control and energy recovery in chemical, pharmaceutical and wastewater-treatment...
http://www.che.com/processing_and_handling/liquid_gas_and_air_handling/fans_and_blowers/These-fume-exhaust-fans-have-no-belts-or-couplings_11522.html
March 1, 2014
Dilute-phase pneumatic conveying systems must be operated in a certain sequence and have sufficient instrumentation and operating controls to assure reliable operation and prevent problems. This article discusses two subjects that are important for successful dilute-phase conveying. Discussed below are design guidelines for instrumentation and controls that can prevent operating problems, such as pipeline...
http://www.che.com/processing_and_handling/liquid_gas_and_air_handling/fans_and_blowers/Dilute-phase-Pneumatic-Conveying-Instrumentation-and-Conveying-Velocity_11537.html
March 1, 2014
APSPG tubing is specially formulated to withstand the repeated compression and release actions of peristaltic pumps and offers consistent performance in pharmaceutical, biopharmaceutical and laboratory uses. Made of...
http://www.che.com/processing_and_handling/liquid_gas_and_air_handling/piping_and_tubing/Translucent-tubing-for-peristaltic-pumps-in-high-purity-operations_11527.html
March 1, 2014
This company has been awarded a contract to develop special vacuum pumps for the ITER fusion reactor (photo) — a multinational project to further fusion power plants. In order...
http://www.che.com/processing_and_handling/liquid_gas_and_air_handling/pumps/Special-vacuum-pumps-developed-for-fusion-reactor_11525.html
March 1, 2014
These vacuum inlet traps protect pumps across many applications, from laboratory settings to scalable production systems. The inlet vacuum traps feature user-selectable filter elements for removing the...
http://www.che.com/processing_and_handling/liquid_gas_and_air_handling/pumps/Protect-vacuum-pumps-from-contamination-with-these-traps_11534.html
March 1, 2014
The CSF Steam Water Mixer provides a reliable source of hot water that is delivered at the correct temperature and pressure. The mixer is a safe and...
http://www.che.com/processing_and_handling/liquid_gas_and_air_handling/valves/Mix-steam-and-water-for-safe-wash-downs_11518.html
March 1, 2014
The portfolio of Neles ceramic E-Series control valves (photo), recognized for being extremely erosion resistant, has now been expanded to NPS 8 in. (DN 200) in pressure Class 300 (PN40). The E-series valve is the most...
http://www.che.com/processing_and_handling/liquid_gas_and_air_handling/valves/Size-extension-for-this-erosion-resistant-control-valve_11526.html
March 1, 2014
This company now offers its new SQEx.2 part-turn actuator  — the explosion-proof version of its SQ actuator, which was introduced at the beginning of 2013. In line with qualification requirements for hazardous...
http://www.che.com/processing_and_handling/liquid_gas_and_air_handling/valves/New-explosion-proof-actuator-for-chemical-applications_11530.html
March 1, 2014
This multi-port valve block from the iComLine Series is made of ultra-pure PVDF and features innovative seat-diaphragm technology with PTFE. This combination allows very heavy-duty...
http://www.che.com/processing_and_handling/liquid_gas_and_air_handling/valves/Precise-dosing-with-multi-port-fluoroplastic-valve-blocks_11532.html
March 1, 2014
How big can a fermenter get? And what would the biggest fermenter look like? The answers to these questions depend upon how the requirements of heat transfer, mass transfer (gas-to-liquid), and momentum transfer (mixing) are met. In an earlier article (Heat Transfer for Huge-Scale Fermentation, Chem. Eng., November 2013, pp. 44–46) the authors described how heat-transfer requirements can cause...
http://www.che.com/processing_and_handling/liquid_gas_and_air_handling/mixing/Mass-Transfer-in-Fermentation-Scaleup_11536.html
February 1, 2014
Compressible gas flow with significant variation in density along pipes is commonplace in the chemical processing industries (CPI). In designing these pipes for compressible flow, it is important to calculate the pressure loss or maximum gas-handling capacity for safety and economic reasons. Due to the complexity of the equations for compressible flow, which often require time-consuming iterations, current...
http://www.che.com/processing_and_handling/liquid_gas_and_air_handling/ducts_and_ventilation_systems/Compressible-Fluid-Flow-Calculation-Methods_11438.html
February 1, 2014
Would you like to make a quick mental calculation to determine approximate flowrate, velocity, or pipe and duct sizes for many common situations? This article presents two methods for estimating flow characteristics without the aid of charts, tables, calculators or software programs. One method applies to liquid flow in pipes, and the other to air flow in ducts. The techniques are intended to be simple...
http://www.che.com/processing_and_handling/liquid_gas_and_air_handling/ducts_and_ventilation_systems/Quick-Pipe-and-Duct-Flow-Calculations_11439.html
February 1, 2014
This company has developed helium recovery units that make it possible to recover and recycle the gas used in leak detection. The recovery of used helium is useful for meeting the...
http://www.che.com/processing_and_handling/liquid_gas_and_air_handling/pumps/Perform-leak-tests-without-wasting-helium_11422.html
February 1, 2014
Pressure to become more flexible and provide shorter cycle times have prompted chemical processors to examine their mixing operations to determine whether there is a way to increase process efficiency via mixing equipment. And, they just might be onto something, as modern mixing systems are designed for particular process requirements and mixing tasks, allowing them to operate efficiently. The greater...
http://www.che.com/processing_and_handling/liquid_gas_and_air_handling/mixing/Mixing-in-the-spotlight_11413.html
January 6, 2014
A new online Material Selection Guide is available from DeZURIK (Sartell, Minn.; www.dezurik.com). This convenient web application makes it quick and easy to determine which metals or elastomers are suggested as suitable for valves in...
http://www.che.com/processing_and_handling/liquid_gas_and_air_handling/valves/New-on-line-material-selection-guide-for-valves_11370.html
January 1, 2014
Pressure vessels are common in the chemical process industries (CPI) and they range widely in size and complexity. Process engineers may be tasked with inspecting a new pressure vessel or with witnessing hydrostatic testing of a vessel. In addition, engineers could be asked to witness repairs or alterations to a pressure vessel already in service, during day-to-day process and maintenance operations...
http://www.che.com/processing_and_handling/liquid_gas_and_air_handling/tanks_and_vessels/Pressure-Vessel-Quality-Control-Requirements_11363.html
December 1, 2013
Gear units play a critical role in a diverse array of chemical process industries (CPI) facilities, to match the speed of a selected driver with the speed of the driven equipment. Today, they are used extensively in pumps, turbines and compressors, in material-handling units (such as conveyers and stackers), and in other equipment, including mixers, kneaders and extruders. This article discusses...
http://www.che.com/processing_and_handling/liquid_gas_and_air_handling/compressors/Gear-Units-In-CPI-Plants_11281.html
November 1, 2013
Working in close proximity to the high pressures and temperatures commonly found in the chemical process industries (CPI) is cause enough for concern over a person’s wellbeing; but working in close proximity to chemicals that are considered toxic, hazardous or reactive escalates that concern to a higher degree (Figures 1 and 2). The dangers of such chemicals underline the paramount importance of...
http://www.che.com/processing_and_handling/liquid_gas_and_air_handling/piping_and_tubing/Piping-Design-for-Potentially-Lethal-Chemicals_11173.html
Pages:  [1] 2 3 4 5 6 7 8 9 10 Next »

Get more from Che.com
Get email updates in your inbox

 

Subscribe to:
Chemical Engineering Magazine

Chemical Engineering Magazine and Archives

Plant Cost Index

Join us on... Twitter LinkedIn

LinkedIn Groups

Our LinkedIn group is now over 21,000 members strong!

  1. Join other CPI professionals from all over the globe and share best practices, expertise, concerns and more.
  2. Provide feedback to Chemical Engineering Editors


Current members represent Worley Parsons, DuPont, SABIC, Fluor, Air Products, LyondellBasell, Nalco, Dow Chemical, Dow Corning, BASF, Jacobs Engineering, ExxonMobil, Shell, Chevron and more.

Join Now



We also offer the following subgroup for more targeted discussions:

Tools
Search the Buyers' Guide

Plant Cost Index

Facts at Your Fingertips (archive)

Ask the Experts

Back Issues
X
To access this area, please log in or create an account.
Username:
Password:
Forgot your password?
Request it now.
Processing...