Closed-loop impregnation system

  • 13-Mar-2009 04:20 EDT
ultrasealwnclosedloop.jpg

Ultraseal's closed-loop, effluent-free impregnation system reduces the effluent associated with conventional impregnation systems by 99%. The recyclable sealants are recovered during the cold wash process and returned to the autoclave for reuse. This system provides the benefits of reduced sealant usage, decreased effluent production, and reduced fresh water usage. The hot-cure effluent is also recycled by pumping solution from the hot-cure tank to a distillation unit, where the hot-cure water is purified. This clean water is then returned to the cure tank for reuse. A specialized chemical is dosed into the system to ensure that the distillation process is kept clean. The highly concentrated waste (usually less than 1% by volume) is collected separately for subsequent disposal. This hot-cure recycling results in water savings by not having to replace the tank volume on a regular basis, provides energy savings due to not having to reheat the replacement water, results in effluent savings due to reduction of the effluent stream by up to 99%, and creates manufacturing savings by not having to stop the machine and lose production while changing the water.

For more information, visit booth 1654 at the SAE 2009 World Congress.

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