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

Displaying 1 - 20 of 53 stories.
June 16, 2014
Kobe Steel, Ltd. (Tokyo, Japan; www.kobelco.com) announces that its subsidiary company, Kobelco Machinery do Brazil Ltda., has begun full-scale marketing of nonstandard compressors in the South America. Based in Sao Paulo, Kobelco Machinery do Brazil (KMB) is Kobe Steel’s first location established in Brazil. In recent years, Brazil has been vigorously pursuing marine resource development. High...
http://www.che.com/processing_and_handling/liquid_gas_and_air_handling/compressors/Kobe-Steels-compressor-company-opens-in-Brazil_11886.html
June 1, 2014
Compressors for specialized chemical process industries (CPI) applications — particularly high-pressure applications (involving large- and medium-sized machines) and those calling for small compressor units — present particular challenges to system designers and operators. This article discusses a variety of engineering recommendations that should be considered to address these challenges. This...
http://www.che.com/processing_and_handling/liquid_gas_and_air_handling/compressors/Compressors-for-Specialized-Applications_11836.html
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
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
July 1, 2013
Launched in May, the new semi-hermetic, six-cylinder GEA Block piston compressor HG46 CO2 T has a displacement of 21.8 to 30.3 m3/h. It is said to be the biggest semi-hermetic compressor...
http://www.che.com/processing_and_handling/liquid_gas_and_air_handling/compressors/This-CO2-compressor-is-the-biggest-ever_10690.html
June 1, 2013
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
May 1, 2013
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
March 1, 2013
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
January 1, 2013
An industrial compressed-air system is expected to supply air of defined quality, required pressure and desired quantity to all the plant air and instrument air consumers. With air being one of the most critical utilities of a chemical plant, a compressed air system should function efficiently and cost effectively. Therefore, designers should consider parameters such as air quality, air consumption and...
http://www.che.com/processing_and_handling/liquid_gas_and_air_handling/compressors/Design-and-Specification-of-A-Compressed-Air-System_10085.html
December 1, 2012
When it comes to rotating machinery (pumps, compressors, gas turbines, steam turbines, turbo-expanders, and others) operating in the chemical process industries (CPI), installation, piping, support, pre-commissioning, commissioning and startup play crucial roles. Machinery maintenance and repair can be quite costly, and perhaps because of shortages of skilled manpower, particularly at remote site...
http://www.che.com/processing_and_handling/liquid_gas_and_air_handling/compressors/CPI-Machinery-Commissioning-Startup-and-Piping_9994.html
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
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
August 1, 2012
The OPK-341 Industrial Leak Detection Kit is designed to help locate fluid leaks in hydraulic equipment, compressors, engines, gearboxes, as well as fuel and other synthetic and petroleum-based...
http://www.che.com/processing_and_handling/liquid_gas_and_air_handling/compressors/A-detection-kit-for-oil-based-fluid-leaks_9565.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.che.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
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.che.com/processing_and_handling/liquid_gas_and_air_handling/compressors/Centrifugal-Compressors-for-CPI-Plants_9296.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.che.com/processing_and_handling/liquid_gas_and_air_handling/compressors/Condition-Monitoring-for-Rotating-Machinery_9073.html
February 1, 2012
  Screw compressors are widely used throughout the chemical process industries (CPI) and represent a substantial percentage of all positive-displacement compressors that are now sold and in operation in CPI facilities. In general, screw compressors are efficient, reliable, simple and compact compressors that are competitive from both an initial cost and an operating cost standpoint compared to other...
http://www.che.com/processing_and_handling/liquid_gas_and_air_handling/compressors/Choosing-Oil-injected-Screw-Compressors_8954.html
January 1, 2012
      Lubricants in rotating machines reduce friction and wear, dissipate heat, protect surfaces, keep out foreign contaminants and remove wear particles. Commonly used liquid lubricants fall into two main categories: mineral (petroleum-based) oils and synthetic oils. Mineral oils are produced by refining crude petroleum. They usually contain trace amounts of some unwanted substances. By...
http://www.che.com/processing_and_handling/liquid_gas_and_air_handling/compressors/Lubricating-Rotating-Machinery_8840.html
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