Catalysing filter wins award

Catalysing filter wins award

14 Technology news Filtration+Separation January/February 2008 SSP air filter media Hybrid media to clean expensive oil field fluids Johns Manvil...

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14

Technology news

Filtration+Separation January/February 2008

SSP air filter media

Hybrid media to clean expensive oil field fluids

Johns Manville Filtration has developed air filtration media incorporating ‘Assurance’ self-supporting pleat (SSP) technology for residential HVAC, commercial and industrial applications.

DuPont’s Hybrid Membrane Technology (HMT) media has been specified by Total Separation Solutions (TSS) for filters that will be used to clean oil field completion fluids. TSS provides products and equipment to increased productivity and promote environmentally responsible processing of oil field fluids.

Assurance is a nonwoven composite media made of natural and synthetic fibres and can produce MERV 6 to 8 filters. Assurance media with SSP delivers low pressure drop and consistent mechanical filtration efficiency, the company says. Johns Manville says that using SSP technology eliminates the use of expanded metal, thus alleviating the manufacturing and consumer-safety incidents associated with the disposal and handling of sharp, expandedmetal filter structures. They can also remove a manufacturing step involving the lamination of the metal wire to the filtration media. Assurance media-enabled filters can meet stringent testing standards in mechanical air filtration, including the proposed ASHRAE Standard 52.2 test conditioning step. www.jm.com

Catalysing filter wins award US-based MemPro Ceramics Corp has won an innovation award for its ceramic nanofibre catalysing filter. The FilterHot, Soot Grabber and MaxoSurface filter technology filters hot gases and uses a catalyst in its nanofibres, which can help convert the pollutants produced in various industries. The filter technology can also be used in the automotive, energy, advanced materials, petrochemical and life science industries. The company plans to manufacturer quantities of the technology for marketing and distribution early in 2008. The 2007 NorTech Innovation Award was given to the company due to the ‘breakthrough innovation’ aspect of the technology. www.mempro.com

“The need for effective filtration of completion fluids is a key issue for the oil and gas industry, particularly in offshore drilling where unusable fluids must be stored in holding tanks at a significant expense for the driller,” asid Matthew L. Trerotola, vice president and general manager, DuPont Nonwovens. Completion fluids are expensive, high density, extremely clean fluids

used to do work on offshore wells when the fluid might contact the oil bearing formation. These bromide and formate fluids can weigh up to 20 pounds per gallon and cost up to US$4,000 per barrel. Typically, cleaners and tools are first used to clean the well. Then completion fluids are circulated in the well before any work is done to the formation. Throughout the industry, completion fluids are recycled to better manage costs and the potential environmental impact of disposal. It is important to capture as much debris as possible during the filtration process because recycled completion fluids with high levels of debris will eventually clog the routes by which the oil travels to the surface, shortening the lifespan of a well.

"DuPont HMT nanofibre has two advantages over existing filtration media. First, its flow rate allows completion fluids to be pumped at a higher rate,” said Kevin Smith, founder of TSS. “Additionally, these fluids are often contaminated and you need 0.5 micron filtration to remove particles.” DuPont HMT is comprised of continuous sub-micron polymeric filaments with a diameter of between 100 nanometers and 1 micron. The technology uses a proprietary spinning process that creates a membrane-like nonwoven sheet structure to deliver next-generation functionality across a wide range of microfiltration applications. www.dupont.com

Low-speed blood banking centrifuge Thermo Fisher Scientific has developed a low-speed centrifuge for blood banking, bio-processing and general sample processing applications. The Sorvall RC3BP Plus is an improved version of the company’s established Sorvall RC3BP centrifuge, with an

improved operator interface, a new electronic lid-latching system, and a more powerful motor and refrigeration system to increase operational efficiency. The Sorvall RC3BP Plus can process a range of bags, bottles and tubes at volumes up to twelve

blood bags or 6 x 1L of sample. The new model also features the Accumulated Centrifugal Effect (ACE), which compensatesfor variations between runs and instruments regardless of rotor load or acceleration. www.thermofisher.com

Flowmeter for difficult measurements Hawk Measurement Systems has developed the Sultan Flow, a flowmeter which is suitable for real time flow measurement of liquid materials. Featuring continuous 4-20mA output, alarm relays, failsafe relays and serial data via RS-485 with Modbus, the Sultan Flowmeasures head, flow rate and flow volume and rate totalization.

by the transducer and processed by the amplifier. After measuring the time between transmission of the signal and reception of the echo, the distance from the

transducer to the liquid being monitored is calculated using the speed of sound through air and is temperature compensated. www.hawk.com.au

The Sultan Flow is suitable for a variety of applications, including open channel flow, special requirements for unusual flow channels, water treatment, sewage treatment, irrigation, industrial waste and power waste. The company says that the Sultan Flow can monitor liquids even under the most difficult foaming conditions. The Sultan Flow operates by transmitting an acoustic wave signal from the transducer to the monitored liquid. The reflected echo or signal is then received

The Sultan Flow liquid measurement tool.