Flammable non-condensible gases (NCG’s), usually referred to as Total Reduced Sulfur compounds (TRS) or Dilute Vent Gases, are byproducts of the wood pulping process. These gases, mostly sulfurous, are extremely malodorous and flammable. 

Health and pollution regulations prohibit the release of these gases into the atmosphere. They are usually eliminated by passing them through an incinerator or by using them as fuel in the burner of a boiler or kiln.

Most pulp mill managers have serious concerns about the safe incineration of these non-condensable gases collected from digesters, reactors and other sources in the pulping process. The only certain way to guard against fires and explosions is to use continuous flammable gas monitoring system.

Because of its unique construction and operating technology, our flammability analyzers provide the optimum system for monitoring non-condensable gases in paper and pulp mills, for five key reasons, today let's discuss the first:

  • Straight-Through Flow Design Ideal for TRS Mist Samples

Because most sensors can only operate at ambient, as opposed to process temperatures, they are positioned far away from incinerators, using a snaking pipe arrangement and pumps to cool samples. This convoluted network can lead to many sample delivery and maintenance problems, particularly when the Total Reduced Sulfur (TRS) compounds in the pulp mill process, are in a mist state.

The PrevEx Flammability Analyzers, Model SNR674's, simple flow system has no capillaries that can clog or pumps that can fail, even with TRS compounds samples in a mist state. 

Because the sensor operates at high temperature, water droplets and mists are maintained in a vapor state throughout the sampling process, which is essential to getting an accurate reading.

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