Air Clean-Up
New Air Pollution Control Website… a Resource for Visitors
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info@ps-pub.com Acid Fume Treatment Project in Central Asia
Anguil Environmental Systems (USA) launch a new interactive website that further defines their position as a pollution control thought leader and information resource for clients. The fully redesigned website,
http://anguil.com/, focuses on information efficiency, quality content and effortless navigation.
Marketing Manager Kevin Summ says: “Anguil strives to be a resource for consultants, engineers and end users in need of air pollution control and energy recovery systems. We designed the new website with that objective in mind.” Anguil Environmental Systems case studies are now searchable by the 16 different industries they serve. With the launch of the new website, Summ goes onto say, “I’m confident that visitors will continue coming back to
anguil.com for their oxidiser and energy questions and applications.”
Reader Reply Card No 60
ERG (Air Pollution Control) (UK) has completed a £300k project to supply an acid fume scrubber to Kazakhstan. The client is the petrochemical giant, Tengizchevroil, which is a joint venture between Chrevron, Exxon Mobil, and local Kazakh operators KazMunaiGas and LukArco.
a 50m3
fumes is 20o between -40o
The client needed the scrubber to treat hydrochloric acid (HCl) fumes which are given off from storage tank containing concentrated HCl. The normal operating temperature range of the C to 44o
C and +75o
C, but Tengizchevroil specified an operating range for the fume scrubber C to allow for extreme Kazakh weather conditions in addition to an
operating margin. To add to the technical challenge, the client also specified that the scrubber should be capable of handling pressures up to 6 atmospheres.
Under normal operation, the concentration of HCl in the extracted fumes is 130,000 ppm, but this can rise to in excess of 500,000 ppm at the extreme operating limits. The ERG designed scrubber reduces the HCl content down to less than 2ppm – an impressive extraction efficiency of more than 99.99%.
The key part of the scrubbing system is a packed tower scrubber. This uses water as a scrubbing liquor to capture the displaced HCl fumes that are expelled as the storage tank is filled.
The scrubber is mounted on a 3.4m3 recirculation tank, and along with a recirculation pump and
Mobile Activated Carbon Filters for Purification of Air
associated pipe-work, the complete system is supplied on a 304L stainless steel skid. The pump re-circulates the scrub liquor water from the tank to the packed tower. Mains water is supplied to the recirculation tank to make up evaporation losses. To monitor the build up of HCl in the scrubbing liquor, samples are taken by means of a safe sampling valve that can be linked to a conductivity or pH instrument. The unit also allows ambient air to be drawn into the tank as the HCl is drawn off for use.
The cleaned fumes containing <2ppm HCl pass through a pad type demister before being discharged to atmosphere.
The unit was built in the UK adn left in October 2010 on its 4,000+ mile 6-week overland journey across Europe and Russia to the refinery site at Atyrau on the Caspian Sea.
Reader Reply Card No 61
Air Filter Sales in Asia Soar Past $2 Billion
Asia is the fastest growing market for air filters and purifiers. One third of the 2011 sales of $6.6 billion will be in Asia. This is the latest forecast in the McIlvaine Air Filtration and Purification World Markets.
Nearly half the market will be for medium efficiency filters, rated F 5-9 (approx. MERV 8-15). These are filters similar to the 3M electrets filter as opposed to lower efficiency furnace filters with the G1-4 rating. The high efficiency and gas phase segments are still comparatively small.
Activated carbon is a micro porous inert carbon with a large internal surface (up to 1500m²/gr). On this surface organic molecules from liquids or gases can adsorb. Adsorption is the natural phenomenon in which molecules from the gas- or liquid phase are attached to the surface of the solid.
The AIRCON® -H is a mobile interchangeable activated
carbon adsorption filter, specially developed for the treatment and purification of air and gases. This mobile filter is adsorber and transport vessel in one.
DESOTEC (Belgium) developed the AIRCON® -system (AIR-
CON-tainer) specially for use in industrial air and gas purification applications, e.g. deodourisation, solvent removal, tank venting, industrial gas and exhaust treatment (e.g. for spray paint). The capacity goes up to 40000m³/h.
The AIRCON® -H is normally delivered pre-filled on-site by a
DESOTEC truck. The frame of the filter allows it to be placed on a flat and hard surface.
The filter is operated until saturation of the activated carbon. Once the activated carbon is saturated, the entire filter is replaced by another unit, filled with fresh carbon. This eliminates the need for spent activated carbon disposal by the user and minimises manipulation and transport costs. Once the mobile filter is returned to DESOTEC, it is discharged of spent carbon, cleaned, checked and refilled with new carbon.
The AIRCON® and quick fixations. The AIRCON®
-H is normally connected with flexible hosing -H is used in a simple and
economical way as single filter or in series or in parallel. As an alternative also a vertical mobile filter is possible (AIRCON®
-V). Reader Reply Card No 63 Reader Reply Card No 64 New Literature Release UltraTemp product bulletin from Tri-Mer (USA) describes new hot gas filtration system for capturing fine,
submicron and ultrafine particulate, and for scrubbing acid gases and controlling NOx. Also discussed is a new technology for low-density ceramic filter tubes, which are the heart of the UltraTemp system. Bulletin discusses removal efficiencies for all contaminants. For PM, performance is to less than 0.001
grains/dscf. For the efficient scrubbing of SO2, HCl and other gases, typical results are 90-97% removal. For NOx, typical results are up to 95% removal. UltraTemp is distinctive in that it operates up to 1650o
F.
There is a relative high penetration of gas phase filters in Japan where applications even include bathrooms. But generally throughout Asia the penetration is less than in America. Japan is also a significant market for electronic filters but not the rest of Asia. The HEPA (microfiber glass) filter media with the H10-17 rating is a growing segment of the market due to the construction of electronic facilities in the region.
The commercial use exceeds any other application. One only has to look out of a high rise window in Shanghai to view the thousands of new tall buildings under construction. This segment of the market is growing very rapidly.
The metals segment includes cabin air filters in automobiles but not the engine air filters. The Other Industries segment is the largest and
includes HVAC filters in many different types of industrial facilities. The Bioclean segment includes hospitals, dental offices, animal research laboratories and the pharmaceutical industry.
The market is international in all respects. Many U.S. and European media manufacturers have set up manufacturing operations in Asia. This allows them to not only serve the local markets but to export roll goods to the rest of the world. A number of companies such as 3M are vertically integrated and make both the media and final filter. Clarcor just acquired TransWeb who had been a long time supplier of media for Clarcor filters.
Despite the presence of some very large players, the market is not dominated by them. There are thousands of air filter companies who have niches which are geographic, product, or application specific.
Reader Reply Card No 62
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www.pollutionsolutions-online.com • February / March 2011
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