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

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

Displaying 1 - 20 of 746 stories.
June 1, 2013
Compressors: N2 Expands the Applicability of Dry Gas Seals
Ongoing advances in the design and use of dry gas seals (DGSs; [ 1]) — as an alternative to traditional oil-lubricated wet seals [ 2] — have helped to improve the reliability and efficiency of compressors throughout the chemical process industries (CPI). One of the major design considerations in mechanical seals is how to protect seal faces from wear, as one face rotates close to a static face...
http://www.che.com/processing_and_handling/liquid_gas_and_air_handling/compressors/Compressors-N2-Expands-the-Applicability-of-Dry-Gas-Seals_10582.html
June 1, 2013
Solving Vessel Equations: A Better Way
Calculating the volume of a liquid in a vessel of a complex shape is a common task for chemical engineers. However, there are several difficulties associated with accurately carrying out this calculation. In my own experience as a chemical engineer, I have become familiar with the complexities of calculations related to determining the volume of a liquid contained in a vessel with an irregular shape...
http://www.che.com/processing_and_handling/liquid_gas_and_air_handling/tanks_and_vessels/Solving-Vessel-Equations-A-Better-Way_10573.html
May 1, 2013
Compressors: Pursuing Lowest Cost of Ownership
A variety of technologies, methods and best practices are available to obtain the lowest total cost of ownership for compressors used in plants throughout the chemical process industries (CPI). This article discusses several critical areas in which concerted effort can help to reduce the overall cost of ownership.    Specifying compressors The ability to carry out proper shop-based performance...
http://www.che.com/processing_and_handling/liquid_gas_and_air_handling/compressors/Compressors-Pursuing-Lowest-Cost-of-Ownership_10473.html
May 1, 2013
Mag-drive pumps for challenging environments
This company’s magnetic-drive pumps now exceed driving power of 515 kW, with flowrates of 3,500 m3/h, delivery heads of 160 m and system pressures from PN 16 to 400. They can operate at temperatures of...
http://www.che.com/processing_and_handling/liquid_gas_and_air_handling/pumps/Mag-drive-pumps-for-challenging-environments_10478.html
May 1, 2013
Metering pumps that exceed API 675 performance standards
The Hydro-Cell Metering Solutions line is comprised of six metering pumps ranging in capacity from 0.32 to 894.6 gal/h (1.21 to 3,386.4 L/h), with pressure ratings from 50 to 2,599 psi (3.4–172 bars). These pumps use variable frequency-drive...
http://www.che.com/processing_and_handling/liquid_gas_and_air_handling/pumps/Metering-pumps-that-exceed-API-675-performance-standards_10486.html
May 1, 2013
Plastic makes these centrifugal pumps resist corrosives
Since 1962, this company has been manufacturing horizontal and vertical centrifugal pumps to handle corrosive and abrasive fluids. The pumps are made of various thermoplastics (PP, PVDF, PE-UHMW, PFA, PTFE) or stainless steel...
http://www.che.com/processing_and_handling/liquid_gas_and_air_handling/pumps/Plastic-makes-these-centrifugal-pumps-resist-corrosives_10490.html
May 1, 2013
A selection of pumps for handling viscous fluids
At AchemAsia, this company launched the new extrex EA, a localized extrusion pump suitable for most extrusion applications, delivering a differential pressure of up to 200 bars. The pumps are assembled in the company’s new facility in Shanghai...
http://www.che.com/processing_and_handling/liquid_gas_and_air_handling/pumps/A-selection-of-pumps-for-handling-viscous-fluids_10493.html
May 1, 2013
Control Valve Performance
Minimizing process variability is an important component of a plant’s profitability. The performance of control valves within process control loops has a significant impact on maintaining consistent processes. This refresher outlines some of the important aspects of control-valve performance, including parameters of both the static response and the dynamic response. Static response A valve’s...
http://www.che.com/processing_and_handling/liquid_gas_and_air_handling/valves/Control-Valve-Performance_10469.html
May 1, 2013
Bellows-sealed valves for really hazardous chemicals
For 40 years, this company has developed and manufactured bellows-sealed globe valves (photo) for hazardous applications in the chemical, petrochemical and nuclear industries. The...
http://www.che.com/processing_and_handling/liquid_gas_and_air_handling/valves/Bellows-sealed-valves-for-really-hazardous-chemicals_10492.html
May 1, 2013
A power tool for opening and closing valves
The EasiDrive portable valve actuator effortlessly opens and closes valves in petroleum refineries, power plants, paper mills and chemical processing plants. Generating a torque of up to 2,000 Nm, this tool enables a...
http://www.che.com/processing_and_handling/liquid_gas_and_air_handling/valves/A-power-tool-for-opening-and-closing-valves_10494.html
May 1, 2013
Focus on Mixing
Silverson Machines A laboratory mixer that supplies data for scaleup The L5 Series laboratory mixers are suitable for R&D, quality analysis and standard laboratory work. The mixers have a capacity range from 1 mL up to 12 L, and are able to mix inline with flowrates up to 20 L/min. Each machine is constructed with wetted parts in grade 316L stainless steel. The L5M-A laboratory mixer features...
http://www.che.com/processing_and_handling/liquid_gas_and_air_handling/mixing/Focus-on-Mixing_10461.html
April 1, 2013
Focus on Seals & Gaskets
Avoid pipe corrosion with this spacer Trelleborg Group Flexspacer has been developed to effectively create an air gap between topside pipelines and thermal insulation, thereby avoiding the corrosion that can occur when using traditional insulation systems such as mineral wool. By stopping direct contact between the insulation and the pipe, Flexspacer prevents any damage to the corrosion protection on the...
http://www.che.com/processing_and_handling/liquid_gas_and_air_handling/seals_gaskets_and_packing_materials/Focus-on-Seals-and-Gaskets_10381.html
April 1, 2013
These actuators are designed for large pressures
Promation Engineering Designed for use on rising-stem globe control valves, the PL Series actuators (photo) provide up to 4,400 lb of force and up to 3.9 in. of travel. This increased up-and-down force, the company says...
http://www.che.com/processing_and_handling/liquid_gas_and_air_handling/valves/These-actuators-are-designed-for-large-pressures_10385.html
April 1, 2013
The Direct Integration Method: A Best Practice for Relief Valve Sizing
What if someone were to tell you that there is one method available for sizing relief valves that applies to virtually every situation, including two-phase flow and supercritical fluids? And what if they told you that method is more accurate and easier to use than traditional methods or formulas? As it turns out, both of these statements are true. The approach described here — the Direct Integration...
http://www.che.com/processing_and_handling/liquid_gas_and_air_handling/valves/The-Direct-Integration-Method-A-Best-Practice-for-Relief-Valve-Sizing_10394.html
March 1, 2013
Integrating Gas Turbines Into CPI Facilities
To realize the best possible thermal efficiency, gas turbines should be integrated into chemical process industries (CPI) plants, but doing so can be difficult and requires special consideration. Specifically, in some CPI units, while the turbine’s shaft is driving an equipment component (such as a compressor), the hot exhaust gas from the gas turbine can be connected to furnace burners or...
http://www.che.com/processing_and_handling/liquid_gas_and_air_handling/compressors/Integrating-Gas-Turbines-Into-CPI-Facilities_10295.html
March 1, 2013
New coolant connections for high-flowrate applications
Coolant circuits must dissipate heat from applications such as welding or power-electronics installations. This requires high flowrates within a compact space. This company...
http://www.che.com/processing_and_handling/liquid_gas_and_air_handling/piping_and_tubing/New-coolant-connections-for-high-flowrate-applications_10283.html
March 1, 2013
Focus on Pumps
Dickow Pump No cooling water needed for these hot-water pumps This company offers a wide range of hot-water pumps for temperatures up to 530°F and design pressures up to 1,160 psi. Due to high vapor pressures, standard mechanical seals cannot be used for higher temperatures. Although cooled mechanical seals are the easiest solution, the required cooling water adds additional costs. An alternative is a...
http://www.che.com/processing_and_handling/liquid_gas_and_air_handling/pumps/Focus-on-Pumps_10286.html
March 1, 2013
A clean steam separator for pristene processing
The CS10 Clean Steam Separator with enhanced surface finish has been engineered to overcome problems associated with wet steam and ensures the correct quality of steam is supplied to the point of use...
http://www.che.com/processing_and_handling/liquid_gas_and_air_handling/steam_traps/A-clean-steam-separator-for-pristene-processing_10274.html
March 1, 2013
Valve position indicators that tell more than just on or off
  The 2040 digital position indicator uses a colored light signal, visible from a distance, to show the open or closed position of a valve. Four different color signals are used: open and closed by...
http://www.che.com/processing_and_handling/liquid_gas_and_air_handling/valves/Valve-position-indicators-that-tell-more-than-just-on-or-off_10266.html
March 1, 2013
Direct-acting solenoid valves for use in harsh environments
Introduced last month, these two intrinsically safe solenoid valves (photo) have Ex ia IIC T6 certification. The solenoid operators are designed for use on the 327 range of direct-operated solenoid...
http://www.che.com/processing_and_handling/liquid_gas_and_air_handling/valves/Direct-acting-solenoid-valves-for-use-in-harsh-environments_10273.html
Pages:  [1] 2 3 4 5 6 7 8 9 10 Next »

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

Join us on...
Twitter LinkedIn

Subscribe to:
Print & Digital Issues
Official Publication of:

LinkedIn Groups

Our LinkedIn group is now 10,000 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...