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首页> 外文会议>TAPPI pulping conference >First Mill Scale Experiences of the Water Jet Pulpstone Conditioning System at UPM-Kymmene Voikkaa and Rauma Paper Mill
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First Mill Scale Experiences of the Water Jet Pulpstone Conditioning System at UPM-Kymmene Voikkaa and Rauma Paper Mill

机译：芬欧汇川Kymmene Voikkaa和劳马造纸厂水喷射纸浆调理系统的初选规模经验

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In the optimization of groundwood pulp quality, maintaining the pulpstone at a constant sharpness has been a major problem. As an alternative to metallic sharpening burrs, Water Jet stone conditioning offers a new approach to this problem.In this conditioning system, a jet of high pressure water, up to 2500 bar, is aimed at the stone surface. The advantage of this method, which keeps the stone clean and maintains its porosity, is that the force of the treatment can be adjusted accurately by controlling the jet pressure and the number of treatment cycles. This greatly improves the repeatability of stone conditioning.The result is easier grinder control and a substantial decrease in the variation of the freeness and quality of pit pulp. This, in turn, enhances the controllability of the screening room and ultimately produces more uniform pulp quality.This paper presents the first mill-scale experiences with Water Jet conditioning. The first section of the findings focuses on the grinder controls at the Voikkaa Paper Mill. The effect of water jet conditioning on the pulp quality and screening room control at the Rauma Paper Mill is discussed in the second section of the results.Briefly, the results can be summarized as follows. The variation in grinder control decreased in all the main control categories, and grinder production increased. Pulp quality improved, and there was a corresponding decrease in the variation in groundwood pulp quality.
机译：在优化磨木浆质量中，将纸浆保持恒定的清晰度一直是主要问题。作为金属锐化毛刺的替代方法，喷水石材修整技术提供了解决此问题的新方法。 在这种调节系统中，高达2500 bar的高压水射流对准石头表面。该方法可保持石材清洁并保持其孔隙率，其优点是可以通过控制喷射压力和处理周期数来精确调整处理力。这大大提高了石材调理的可重复性。 结果是更容易控制研磨机，并大大减少了矿浆的游离度和质量的变化。反过来，这增强了筛选室的可控性，最终产生了更均匀的纸浆质量。 本文介绍了水喷射调节技术在造纸厂的首次使用经验。研究结果的第一部分重点介绍了Voikkaa造纸厂的研磨机控制装置。结果的第二部分讨论了射流调节对劳马造纸厂纸浆质量和筛选室控制的影响。 简要地，结果可以总结如下。在所有主要控制类别中，磨床控制的变化都减小了，磨床产量增加了。纸浆质量得到改善，而磨木浆质量的变化也相应减少。

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