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Thursday, September 20, 2012

#77 - Sample Preparation for Corrosive Gases

Exhaust gas analysis is frequently required for incinerators and other combustion processes that produce corrosive waste gases such as SO2 and HCl.

Some gases are inherently corrosive while others are soluble and can produce acids when dissolved in condensate that is formed as gases cool. If these gases do not require analysis, the best approach is to remove them before analysis.

Ideally, the sampling system in these cases should be designed to continuously extract, filter, and scrub the flue gas before it goes to the gas analyzer.

Our preferred approach is to filter the gas at the sample point while it is still hot. This ensures that the particulate is removed prior to formation of condensate. After that, condensate formation may occur freely without risk of creating a particulate slurry and plugging the sample lines.




The 7240 / 7300 Series Systems have been designed for this purpose. The sample gases are drawn into the high temp probe and continue on into the heated particulate filter. Next, they travel to the water wash system where they are cooled and scrubbed of corrosives. They are then sent to the gas analyzer cabinet for final analysis.

FEATURES
  • Economical and reliable sample gas cleaning system
  • Allows analysis of acidic flue gases
  • Can be used on samples with high particulate
  • Only small amount of 'make-up' water required

We have used these systems on medical waste incinerators, municipal waste gasifiers, and other processes that produce corrosive or aggressive gases.

For information on these and other gas analyzer systems, give Mike or Dave at Nova a call, or send us an e-mail.

1-800-295-3771
sales at nova-gas dot com
websales at nova-gas dot com
http://www.nova-gas.com/
https://twitter.com/NOVAGAS
http://www.linkedin.com/company/nova-analytical-systems-inc-
http://www.tenovagroup.com/

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Tuesday, September 11, 2012

#76 - Live Security Platinum Virus

My home computer was recently infected with a nasty virus called Live Security Platinum. This particular virus is carried into and installs on a computer via a Trojan horse virus. It seems to have loaded onto my computer while I was downloading a graphics pattern for a construction diagram that I was producing.

This rotten malware takes control of the computer and poses itself as an anti-virus program. It flashes the usual fake warnings about dangerous virus and malware infections. To be saved, all you have to do is purchase a key code. The ‘program’ will then remove all of the ‘infections’.


The particularly annoying thing about this virus is that it prevents many other programs from starting. It may also block internet links, claiming that they are not trustworthy. The Remove Program function in Windows Control Panel also does not seem to work.

Fixing the problem requires consulting the internet using another computer that is not infected.

Some websites have posted the activation key for this fake antivirus ‘program’.

http://www.im-infected.com/rogue/live-security-platinum.html
64C665BE-4DE7-423B-A6B6-BC0172B25DF2

http://malwaretips.com/blogs/live-security-platinum-virus/
AA39754E-715219CE

I forget which key I used. This key doesn’t actually remove the virus, but it does cause it to settle down a little and allow other programs to work.

To remove the virus, I used a free program called Chameleon by Malwarebytes. It worked quite well. It even resolved some other issues possibly caused by other viruses on the system.

http://www.malwarebytes.org/

This virus annoyed me because interfered with productivity and caused me to miss a minor deadline on a task. Thankfully, the fix was fairly simple and conclusive. There was a satisfying irony to using its own activation code to help deactivate and ultimately remove it.

Happy surfing!

NOVA Analytical Systems
1-800-295-3771
sales at nova-gas dot com
websales at nova-gas dot com
www.nova-gas.com
http://twitter.com/#!/NOVAGAS
http://www.tenovagroup.com/
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