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One Minute Filtrationsm Articles

The One Minute Filtrationsm Article is a feature of the AFS monthy eNewsletter.  Each month a new short information sheet is produced on filtration and separations.  To receive the AFS monthly eNewsletter just sign-in to the form above.

The Recovery of Hydrocarbon Aerosols from Natural Gas Streams

Liquid/Air Separations in the Oil & Gas Industry - The Recovery of Hydrocarbon Aerosols from Natural Gas Streams

Removing liquids and solids from a gas stream is very important in refining and gas processing applications. Effective removal of these contaminants can prevent costly problems and downtime with downstream equipment like compressors, turbines, and burners. In addition, hydrocarbons and solid contaminants can induce foaming in an amine contactor tower and can contribute to premature catalyst change-outs in catalytic processes. In compressors that use oil to lubricate cylinders, the lube oil often gets into the discharge gas causing contamination downstream.

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Every Filtration Media has a Purpose

There are eight major material categories for filtration media: ceramics, filter aids, monofilament nonwoven fabrics, membranes, fabricated metals, porous plastics and wet-laid fibers. Moreover, there are other types and many variants of these eight major categories.

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Gas Monetization: How are we doing? (Part 2 of 2)

This article is Part 2 of a series on Gas Monetization. Gas Monetization refers to activities related to domestic natural gas production. In Part 1, liquefied natural gas (LNG) for export was discussed.  In Part 2, we will explore activities in the remaining three application areas:
1.    Electrical power generation
2.    Motor fuel for transportation
3.    Chemical production

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Winding Pattern: An Effective Tool to Improve Performance of Wound Filters

Wound filters are mostly used as pre-filters nevertheless they can be considered as an essential part of any water purification system and can be produced using filter winders. These winders may be operating on any suitable winding mode; controlled mechanically or electronically. Despite mechanical system being cheaper the electronically controlled system on such filter winder can provide more flexibility.

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Advances in Polymer Filtration

Metal fiber media used extensively in polymer production have been significantly improved in recent years. Familiar geometries, such as flat packs, pleated packs, leaf discs and pleated candles, continue to be offered, and metal fiber media deployed in a pleated candle form remains the most common filtration method for various polymer producers.

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Simulation and the Future of Filter Design

The vision of many filter media makers and filter manufacturers is to remain competitive by fulfilling their client’s requirements of low pressure drop, high filter efficiency, and long filter lifetime, while incorporating innovative filter materials quickly and at low cost. Nothing would be better than to hone in on a few promising designs and restrict costly lab tests to these few designs.

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Dust and Filtration in Space

space-filterDid you know that filtration is alive and essential in space? Air filtration, while ubiquitous on earth, is essential for the confined and closed spaces found in space habitats. The required air cleaning and filtration systems not only need to remove a broad size range of particles, such as skin flakes, hair and clothing fibers, and other substances from food and hygiene operations, but they must also remove any extraterrestrial planetary dust tracked into the habitat by the crew returning from exploration, as well as debris from operating machinery and equipment inside the habitat – all without make-up air or venting.

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Aerosol Filtration in Nanofiber Filter Media

nano fibersNanofiber filter media are used in air filter applications where a compact filtration system with very high overall and fractional efficiency and low initial pressure drop  is required.  Moreover, because the aerodynamic drag force on nanofibers is very low compared to the drag on the large dust particles collected on the nanofiber media, this media is ideal for application to self-cleaning filtration.  The particles can be easily detached by applying reverse airflow or just shaking the filter.

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Removal of Hydrocarbon Droplets from Produced Water Streams

Liquid/Liquid Separations in the Oil & Gas Industry - The Removal of Hydrocarbon Droplets from Produced Water Streams

In the Oil and Gas Industry, the efficient removal of hydrocarbons from produced water streams is essential. While it is well known that two immiscible, or insoluble, liquids will separate naturally if given enough time, this process may take days.  This article discusses the settling law governing the separation of immiscible liquids and the role of coalescing devices.

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Gas Monetization: How are we doing? (Part 1 of 2)

The hydraulic fracturing (“fracking”) technology at the center of the North American energy revolution qualifies as a “disruptive” technology.  The United States was constructing plants to import LNG as late as 2008. Now, gas consuming markets in the United States are being challenged to consume the natural gas that the energy industry can produce domestically, an activity called “Gas Monetization.” The activities are concentrated in four application areas:
1.    Liquefied natural gas (LNG) for export
2.    Electrical power generation
3.    Motor fuel for transportation
4.    Chemical production

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