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Get immediate access to this interactive eLearning course online. Must be used within 30 days, expires 48 hours after launch.
Language: English Portuguese
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Environmental (Pulping) Series (Details)Includes 6 courses for $299/year. Pulping Library (Details)Includes 72 courses for $1,499/year.
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Training Time: 21 minutes
Compatibility: Desktop, Tablet, Phone
Based on: Industry Standards and Best Practices
Languages: English, Portuguese
Non-condensable gases, or NCGs, are a by-product of the kraft pulping process. NCGs are toxic, foul-smelling and potentially explosive. In the distant past these gases were largely discharged directly to the atmosphere. This is no longer allowed. The purpose of an NCG system is to collect, condition and safely deliver these gases to a location within the mill where they are disposed of by incineration. This module will focus primarily on the CNCG type collection system.
Process and Instrumentation Diagrams
View Course
Radiation Safety
Contaminated Condensate Systems
HVLC Systems
Wastewater - Secondary Treatment
The following key questions are answered in this module:
What is the upper explosive limit of a flammable gas and air mixture?It is the gas to air ratio above which the mixture will not burn.
What are NCGs?NCGs are Non-Condensable gases. They are compounds which have boiling points above the temperature of most mill water cooling systems.
What is flame speed?Flame speed is the rate at which a front will propagate through a flammable mixture.
How are steam ejectors used in an NCG system?Steam ejectors pull NCGs through the system and discharge them to an incineration point.
How do flame arrestors stop a flame?Flame arrestors absorb heat and cool a flammable mixture to below it's ignition temperature.
Below is a transcript of the video sample provided for this module:
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