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首页> 外文会议>TAPPI(Technical Association of the Pulp and Paper Industry) Engineering, Pulping amp; Environmental Conference; 20061105-08; Atlanta,GA(US) >LONG FEEDBACK COMPENSATED KAPPA FACTOR CONTROL: PART II OF PROCESS OPTIMIZATION AT ROCK-TENN COMPANY, DEMOPOLIS ALABAMA MILL
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LONG FEEDBACK COMPENSATED KAPPA FACTOR CONTROL: PART II OF PROCESS OPTIMIZATION AT ROCK-TENN COMPANY, DEMOPOLIS ALABAMA MILL

机译：长时间反馈补偿的Kappa因子控制：阿拉巴马州DEMOPOLIS MILL ROCK TENN公司的过程优化第二部分

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Rock-Tenn Mill Company, LLC in Demopolis Alabama has two fiberlines: one dedicated to HWD pulping & bleaching and the other dedicated to SWD pulping & bleaching. The mill installed an online Kajaani Kappa Analyzer and implemented Compensated Kappa Factor Control for the D0 and Dl stages for both fiberlines. On the Hardwood fiberline, because its production rate is more than three times the Softwood production, the mill installed filtrate pistons for pH control in every bleach stage and an inline brightness sensor (a Cormec-I after the Dl stage to the Hardwood HD Bleached Storage). Also on the Hardwood fiberline, the soon-to-be obsolete inline Brightness and Residual sensors were upgraded to I-series sensors feeding the D0 and Dl stages. The mill plans to make the same modifications to the Softwood fiberline. After bleach plant process optimization and implementation of Kajaani long feedback control strategies (CEKappa feedback control to D0 ClO_2 dosage for both fiberlines and Dl final brightness feedback control to Dl dosage for HWD bleaching), the mill realized 11.6% C1O_2 and 24% Caustic savings from baseline while bleaching HWD pulp and 16.8% C1O_2 and 24% Caustic savings from baseline while bleaching SWD pulp. This paper describes the evolution in bleaching measurements and controls at Demopolis that have resulted in placing Demopolis among the lowest cost bleach plants for both HWD and SWD manufacturing in North American benchmarking.
机译：位于阿拉巴马州Demopolis的Rock-Tenn Mill Company，LLC有两条纤维生产线：一条专门用于HWD制浆和漂白，另一条专门用于SWD制浆和漂白。该工厂安装了在线Kajaani Kappa分析仪，并为两条纤维线的D0和Dl级实施了补偿Kappa因子控制。在硬木纤维线上，由于其生产率是软木产量的三倍以上，因此工厂在每个漂白阶段都安装了用于控制pH的滤液活塞和一个在线亮度传感器（Dl阶段之后的Cormec-I到Hardwood HD漂白存储设备） ）。同样在硬木纤维线上，即将过时的在线亮度和残差传感器已升级为向D0和D1级供料的I系列传感器。该厂计划对软木纤维生产线进行相同的修改。漂白厂工艺优化并实施了Kajaani长期反馈控制策略（将CEKappa反馈控制用于纤维生产线的D0 ClO_2剂量和Dl最终亮度反馈控制用于HWD漂白的Dl剂量）后，该厂实现了11.6％的C1O_2和24％的苛性碱节省漂白HWD纸浆时达到基线，而漂白SWD纸浆时则比基线节省16.8％的C1O_2和24％的苛性碱。本文介绍了Demopolis漂白测量和控制技术的发展，这使得Demopolis成为北美基准中HWD和SWD生产成本最低的漂白设备。

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