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Technology news Filtration+Separation May/June 2011
Mini centrifuge has double capacity UK-based provider of electrophoresis and related products Cleaver Scientific has developed a mini centrifuge which it says provides twice the capacity of traditional mini centrifuges. The multifuge features a duoROTOR design that enables the simultaneous spinning of 12 microtubes and 4 PCR strips which effectively doubles its capacity compared to most conventional mini centrifuges. It also eliminates the need to change rotors when switching
US$21 billion investment in air pollution upgrades There are 340 large air pollution upgrade projects outside China due to be completed in 2011, with a utility investment of more than US$21 billion, says McIlvaine in its most recent air pollution database, Utility Environmental Upgrade Tracking System.
between microtubes and PCR strips. The multifuge has a nearly silent operation and a fixed speed that produces 2,000× g. The unit quickly ramps up to 5500 rpm and can also quickly decelerate to enable removal of samples.
The projects in question are retrofits of air pollution control equipment at existing plants, and there is an equally active market for air pollution control equipment for new plants.
The multifuge can accommodate smaller 0.5 and 0.6 ml tubes and can also be used with lowcost optional adapters. It is 14cm wide × 11cm high and weighs 1.1kg. www.cleaverscientific.com
Cleaver Scientific has developed the multifuge, a mini centrifuge.
Growing demand for filters in China Demand for filters in China is projected to grow 13.5% annually to 66.2 billion yuan in 2014, according to a new report by market analysts The Freedonia Group, Filters in China. According to the report, this demand will be supported by a rapid growth in motor vehicle and other transportation equipment production and stocks, and government policies that promote energy conservation and emission reductions. Motor vehicles will remain the largest filter market in China through 2014, when sales will reach 24.6 billion yuan due to the high volume of air intake, oil and fuel filters sold. Currently, internal combustion engine filters account for the majority of Chinese filter demand and will post the strongest gains at 14% annually through 2014, driven by growth in the production and stock of motor vehicles and other transportation equipment, Freedonia says. Sales of fluid filters will be fueled by the growth in nonagricultural water use and expanding urbanisation, and
Table 1: Filter demand in China (million yuan) % Annual Growth Item
2004
2009
2014
20042009
20092014
Filter demand
14300
35200
66200
19.7
13.5
Internal combustion engine filters
6600
17800
34300
21.9
14.0
Fluid filters
5050
10300
18400
15.3
12.3
Air filters
2650
7100
13500
21.8
13.7
sales of air filters are projected to rise 13.7% per year through 2014. Demand will be spurred by rising manufacturing output of HVAC equipment, metal products and building construction materials, and chemicals and pharmaceuticals. Many of these manufactured products are either equipped with air filters or produced in manufacturing facilities with high air purification requirements. Filter demand in the manufacturing sector will benefit from increases in manufacturing activity. Utility filter market gains will be supported by the implementation of stricter air and water pollution regulations, and the construction of
numerous new power plants, water and wastewater treatment facilities and waste incinerators. As income levels grow, more people in China will be able to afford home water and air purification equipment, and rising demand for higher quality and extended life filters are likely to boost overall market value. Growth will be aided by increased demand for newer products such as motor vehicle cabin air filters and by the development of a significant aftermarket for these items. The demand for filters in consumer and other markets will be fueled by increasing personal income levels and rising concerns about air and water quality. www.freedoniagroup.com
In general, the retrofit activity for flue gas desulphurisation (FGD) and particulates is in the US and Eastern Europe. In the US, the retrofits will be modest this year, but there are hundreds of projects projected to take place in 2012, with the promulgation of a new utility air toxic rule. In the 2012-14 period, the US will be the leading purchaser of air pollution control equipment. In India, while there are some retrofit projects, there are many projects associated with new coalfired boilers. The main investment in air pollution control in FGD is wet scrubbing using ground limestone, which will require big investments in rotating items such as ball mills, pumps and fans. There are few suppliers of this large equipment, and, as a result, in the past when orders have surged, it is these items which have led to delays. The amount of readily available high quality limestone is also diminishing as existing users have contracted for the supplies available. Some of the particulate projects will involve upgrades of existing electrostatic precipitators, while others involve replacing the precipitators with fabric filters. This allows more flexibility in fuel selection while still making it possible to meet emission requirements. www.mcilvainecompany.com