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Processing & Handling

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Focus on Pumps

Neptune Chemical Pump This self-priming pump is available for water and wastewater processing The Series 7000 mechanically actuated, diaphragm metering pumps (photo) can handle viscosities in excess of 5,000 cP and can pump chemicals that tend to off-gas (such as…

Hydrogen Production By Steam Reforming

Steam reforming of natural gas at petroleum refining facilities is the predominant means of producing hydrogen in the chemical process industries (CPI). Areas where hydrogen is heavily consumed include ammonia production, the cryogenics industry and methanol production (Table 1)[1]. Because…

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Commercial production of carbon nanotubes

This month, Showa Denko K. K. (Tokyo, Japan; www.sdk.co.jp) will begin marketing its carbon-nanotube (CNT) product, tradenamed VGCF-X. The company produces the CNTs in its new, 400-ton/yr production plant at its Oita facility, and plans to ramp up production to…

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Measurement guide for replacement seals

Mechanical seals play a pivotal role in the chemical process industries (CPI). As the sealing interface between rotating process equipment and the materials contained inside, these devices prevent product leakage and fugitive emissions, while permitting process machines, pumps and compressors…

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Mechanical Design Aspects for High-Performance Agitated Reactors

The stirred tank reactor with rotating mixers remains the backbone of the chemical process industries (CPI). While mixing is considered a mature technology, it is clear that continued technological development is necessary to achieve the state-of-the-art design demanded by ever-increasing…

Steam Tracer Lines and Traps

Steam tracer lines are designed to maintain the fluid in a primary pipe at a designated uniform temperature. In most cases, these tracer lines are used outdoors, which makes ambient weather conditions a critical consideration. The primary purpose of steam…

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Solubility of Water in Benzene Derivatives

The solubility of water in the hydrocarbons that comprise crude oil is an increasingly important issue in view of processing, safety and environmental considerations surrounding product quality and equipment sustainability. Water in the reacting hydrocarbon species may result in the…

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Seal selection for handling and storage of biofuels

Results of 12-mo immersion tests in biodiesel and bioethanol of a range of elastomer polymers typically used in fuel-handling equipment show that the seals are prone to significant swelling, which leads to failure in valves and other equipment, according to…

Focus on Mixing

Uniformly blend batches with this inline mixer Munson Machinery Company This Inline Miniature Rotary Batch Mixer gently blends batches of up to 5.0 ft3 in parts as small as one-per-million with complete uniformity in less than 3 min, evacuates the…

Pump User’s Symposium 2010

The 26th International Pump Users Symposium will be held from March 15–18, 2010 at the George R. Brown Convention Center in Houston. This international meeting will emphasize pump technology and troubleshooting. The symposium is one of two annual gatherings sponsored…