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首页> 外文会议>International Mechanical Pulping Conference; 20070506-09; Minneapolis,MN(US) >Increasing Flexibility for Time of Day Pulping at Alberta Newsprint Company
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Increasing Flexibility for Time of Day Pulping at Alberta Newsprint Company

机译：艾伯塔新闻纸公司在一天制浆过程中提高灵活性

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In 2005, Alberta Newsprint Company undertook a capital project, known as the "TMP Production Project", to increase the thermo-mechanical pulping (TMP) plant production rate in order to better manage electrical power costs and to improve the heat recovery from high consistency refining. The TMP plant in its previous configuration had more than adequate capacity to meet the day-to-day production requirements of the paper machine. However, ANC operates in a fully deregulated electrical power market and rigorously practices "Time of Day" (TOD) pulping to minimize electrical power costs. Specifically, this requires operating the TMP plant at high production rate during times when power costs are low and progressively reducing production as power prices rise and exceed predetermined threshold limits. In recent years, pulp demand had increased substantially due to increasing paper machine speed. The higher pulp demand increased refiner uptime resulting in a significant reduction in the flexibility and subsequent cost effectiveness of TOD pulping. The goals of the TMP Production Project were to de-bottleneck the TMP in order to increase the peak production rate from 800 bone dry metric tonnes per day (BDMT/D) to 900 BDMT/D, while fully utilizing mainline refiner generated steam for clean steam production, and improving operating stability. This paper will discuss the various unit operations impacted by the project scope, and review the results achieved to date in terms of financial savings, TMP production rates, pulp quality, operating efficiency improvements and heat recovery performance.
机译：2005年，艾伯塔新闻纸公司进行了一项资本项目，称为“ TMP生产项目”，以提高热机械制浆（TMP）工厂的生产率，以更好地管理电力成本并提高高稠度的热回收率。精制。先前配置的TMP工厂具有足够的产能来满足造纸机的日常生产要求。但是，ANC在完全放松管制的电力市场中运作，并严格实行“一天中的时间”（TOD）制浆，以最大程度地降低电力成本。具体而言，这需要在电力成本较低的时间段内以高生产率运行TMP工厂，并随着电力价格上涨并超过预定阈值限制而逐渐降低产量。近年来，由于造纸机速度的提高，纸浆需求已大大增加。更高的纸浆需求增加了磨浆机的正常运行时间，从而导致TOD制浆的灵活性和后续成本效益大大降低。 TMP生产项目的目标是消除TMP的瓶颈，以将峰值生产率从每天800骨干公吨（BDMT / D）提高到900 BDMT / D，同时充分利用主线精炼机产生的蒸汽进行清洁蒸汽生产，提高运行稳定性。本文将讨论受项目范围影响的各种单位运营，并从财务节省，TMP生产率，纸浆质量，运营效率改善和热回收性能方面回顾迄今为止取得的成果。

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