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

Displaying 161 - 180 of 824 stories.
July 1, 2012
Among all the engineers who will be involved in the purchase of a mixer or blender next year, roughly half will welcome a change in their production method. The other half will be determined to prevent it. Searching for the right equipment to make a new product or boost current production, about 50% of users will conduct open-eyed tests in the laboratory of a mixing equipment manufacturer.1 They will test...
http://www.chemengonline.com/processing_and_handling/liquid_gas_and_air_handling/mixing/The-Unexpected-Rewards-of-Testing-a-Mixer_9456.html
June 27, 2012
Kobe Steel, Ltd. (Tokyo, Japan; www.kobelco.com) says it will establish two 100% owned companies in July, one in Europe and the other in the Middle East, to expand the global marketing and servicing of its compressors. Kobelco Machinery Europe GmbH will be set up in Munich, Germany to strengthen the marketing of Kobe Steel’s nonstandard compressors in Europe. It will also procure parts for use in the...
http://www.chemengonline.com/processing_and_handling/liquid_gas_and_air_handling/compressors/Kobe-Steel-to-set-up-compressor-companies-in-Europe-and-the-Middle-East_9472.html
June 1, 2012
Compressible flow in pipes is common in the chemical process industries (CPI) and is typically associated with density changes in gases that are subjected to pressure variations. Gas flow conditions can be described using an adiabatic or isothermal flow equation. For conservative piping design, the isothermal model is favored, but it overpredicts mass flux through pipes. The conventional isothermal model...
http://www.chemengonline.com/processing_and_handling/liquid_gas_and_air_handling/A-Novel-Equation-for-Isothermal-Pipe-Flow_9393.html
June 1, 2012
Throughout the chemical process industries (CPI), the need to drain a tank or process vessel arises. In batch-type plants, it is a regular occurrence and is one factor that affects the total cycle time per batch and ultimately the entire production capacity of the plant itself.  Figure 1. In a vertical cylindrical, flat-bottom tank, liquid is flowing into the outlet nozzle (point 1) located at x...
http://www.chemengonline.com/processing_and_handling/liquid_gas_and_air_handling/tanks_and_vessels/Draining-Vessels_9398.html
May 1, 2012
The growth in use of centrifugal compressors in chemical process industries (CPI) applications in recent decades has been brought about by four factors: 1) advances in dry gas seal technology; 2) modern aerodynamic, rotor-dynamic and thermodynamic knowledge and techniques; 3) advanced manufacturing methods to producing accurate rotating parts and various complex components with reasonable costs; and 4) the...
http://www.chemengonline.com/processing_and_handling/liquid_gas_and_air_handling/compressors/Centrifugal-Compressors-for-CPI-Plants_9296.html
May 1, 2012
Failures of piping due to vibration-induced fatigue are a serious problem in the chemical process industries (CPI) and a matter of concern for the safety and reliability of plant operations. Due to the complexity of flow-induced vibrations in pipes, no closed-form design solutions — those that can be expressed in terms of well-known functions — are available. In this article, we present a...
http://www.chemengonline.com/processing_and_handling/liquid_gas_and_air_handling/piping_and_tubing/A-method-for-quantifying-pipe-vibrations_9271.html
May 1, 2012
Peristaltic pumps work by compressing a tube against a circular pump housing with rollers on a rotating arm. The fluid that is ahead of the roller gets pushed forward, while new fluid is drawn into the tube by the vacuum generated as the tube returns to its relaxed state. Peristaltic pumps are a type of positive displacement pump that can be used in industrial chemical dosing applications and others...
http://www.chemengonline.com/processing_and_handling/liquid_gas_and_air_handling/piping_and_tubing/Tubing-for-peristaltic-dosing-pumps_9300.html
May 1, 2012
Use these pumps where product containment is important Wilden This company recently announced the availability of its PX800 Advanced Series Stainless Steel AODD Pump (photo). The new PX800 design is center-ported and features a full 51-mm (2-in.) flow path and threaded 51-mm horizontal fluid connections. This construction makes the PX800 pump well suited for liquid-transfer applications where product...
http://www.chemengonline.com/processing_and_handling/liquid_gas_and_air_handling/pumps/Focus-on-Pumps_9278.html
May 1, 2012
Drilling-mud mixers from this company feature high-efficiency gearboxes designed specifically for agitator service and have configurations for application requirements that are...
http://www.chemengonline.com/processing_and_handling/liquid_gas_and_air_handling/mixing/These-drilling-mud-mixers-have-advanced-gearboxes_9285.html
April 1, 2012
The Model TG-300 variable-speed low-flow pump is a positive displacement gear pump designed for smooth, continuous flows from 0 to 400 mL/min...
http://www.chemengonline.com/processing_and_handling/liquid_gas_and_air_handling/pumps/This-gear-pump-delivers-smooth-flows-up-to-5-galmin_9202.html
April 1, 2012
The Atlas Syringe Pump XL allows automated volumetric dosing from 100 µL/min to 200 mL/min. The pump features two syringes that can be independently controlled or combined to enable...
http://www.chemengonline.com/processing_and_handling/liquid_gas_and_air_handling/pumps/Dose-chemical-reactors-at-high-flowrates-with-this-syringe-pump_9215.html
April 1, 2012
The HydroWhirl S tank washing nozzle range has been expanded to include ATEX-certified versions for use in atmospheres that are potentially...
http://www.chemengonline.com/processing_and_handling/liquid_gas_and_air_handling/tanks_and_vessels/Now-you-can-wash-tanks-in-hazardous-zones-with-this-nozzle_9210.html
April 1, 2012
A three-piece, stainless-steel ball valve features this company’s Smart Connect feature for joining pipes without welding. The ball valves are available in two grades of stainless-steel...
http://www.chemengonline.com/processing_and_handling/liquid_gas_and_air_handling/valves/This-ball-valve-has-pressed-end-connections_9192.html
March 7, 2012
Metso Corp. (Helsinki, Finland; www.metso.com) strengthens its offering for customers in oil-and-gas and power industries by acquiring a globe valve technology and service company, Valstone Control Inc. (Valstone; Chungju, South Korea; www.valstone.com). The acquisition enables Metso to expand its offering for the oil-and-gas and power industries with globe valve technology that plays a key role in most...
http://www.chemengonline.com/processing_and_handling/liquid_gas_and_air_handling/valves/Metso-acquires-a-globe-valve-technology-company-in-South-Korea_9101.html
March 1, 2012
The Nikuradse-Prandtl-von Karman (NPK) equation is the most widely used expression to determine friction factors for fluid flow in smooth pipes [1–3]. It implicitly relates the friction factor (expressed here as f; sometimes called λ) to the Reynolds number, Re. It is shown in Equation (1).   ( 1)     Because the friction factor appears on both sides of the equation, an...
http://www.chemengonline.com/processing_and_handling/liquid_gas_and_air_handling/Simplifying-the-Use-of-Pipe-flow-Friction-Factors_9045.html
March 1, 2012
To optimize process control and overall plant performance, magnetic flowmeters (mag meters) are the most widely used devices in many industrial flow-measurement applications. Mag meters are used to measure the flow of water and other conductive liquids by applying a magnetic field to the flowing liquid. Following Faraday’s law of electromagnetic induction, conductive liquid flowing through the...
http://www.chemengonline.com/processing_and_handling/liquid_gas_and_air_handling/Selecting-Two-and-Four-wire-Magnetic-Flowmeters_9050.html
March 1, 2012
Head loss due to friction for fluids traveling through pipes, tubes and ducts is a critical parameter for solving turbulent-flow problems in the chemical process industries. The Colebrook equation is used to assess hydraulic resistance for turbulent flow in both smooth- and rough-walled pipes. The equation contains a dimensionless fluid-flow friction coefficient that must be calculated for the properties...
http://www.chemengonline.com/processing_and_handling/liquid_gas_and_air_handling/Determining-Friction-Factors-in-Turbulent-Pipe-Flow_9059.html
March 1, 2012
Rotating machines, such as pumps, compressors, gas turbines, steam turbines and electric motors, play crucial roles in most chemical process industries (CPI) facilities. Increasingly, advanced condition monitoring is being used to improve the operation and maintenance of these workhorse components. The use of well-designed condition-monitoring systems, predictive-maintenance strategies and failure...
http://www.chemengonline.com/processing_and_handling/liquid_gas_and_air_handling/compressors/Condition-Monitoring-for-Rotating-Machinery_9073.html
March 1, 2012
The Axxair range of pipe cutting, beveling and welding machines has been added to this company’s range of products. By simply exchanging...
http://www.chemengonline.com/processing_and_handling/liquid_gas_and_air_handling/piping_and_tubing/Cut-bevel-and-weld-pipe-with-a-single-machine_9056.html
March 1, 2012
The Endura Series Dual Split Flange (DSF) swivel joint is specially designed to transfer acids, solvents, petrochemicals and other toxic fluids. The combination of the DSF swivel technology with user-friendly...
http://www.chemengonline.com/processing_and_handling/liquid_gas_and_air_handling/piping_and_tubing/This-swivel-joint-is-made-for-toxic-fluids_9062.html
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