Real-time in-line measurement of stickies in recycled pulp, 2014 PEERS Conference

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A real-time in-line stickies measurement suitable for mill environment is presented in this work. Stickies, in this context, are defined as contaminants in a pulp sample with at least one image attribute (such as translucency, hue, saturation, etc.) different from overall sample. Measurement trends from in-line sensor were validated against existing stickies measurements in multiple paper mills, before operating decisions were made entirely based on this real-time measurement. Mills where in-line stickies measurements have been implemented have on average, been able to make process decisions 8-10 hours faster than their previous laboratory measurements. ANDRITZ PulpVision is an in-line sensor, built on artificial intelligence based algorithm to detect and classify contaminants in a pulp stream. Detection accuracy is not affected by presence of bubbles, flocculation, and consistency variation in pulp samples.