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置换蒸煮过程H-因子在线计算方法研究与实现 |
Research and Implementation of On-line Calculation Method of H-Factor in Displacement Digester Systems |
收稿日期: |
DOI:10.11980/j.issn.0254-508X.2014.04.010 |
关键词: 置换蒸煮 H-因子 蒸煮终点 |
Key Words:Displacement Digester Systems H-Factor cooking endpoint |
基金项目:受国家国际科技合作项目(2010DFB4366)和陕西省科技计划项目(2011KW 11-2)资助。 |
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摘要:针对置换蒸煮终点难以在线判断这一难题,在与传统判别方法分析比较的基础上,结合蒸煮有效温度处理机制,提出了分阶段计算H-因子的在线计算方法。避免了因为仪表故障引起的错误动作,减少了H-因子的计算误差。以STEP7和WinCC为软件开发平台,开发了H-因子在线计算方法的西门子PLC软件,并完成了硬件配置和程序编写,实现了置换蒸煮终点的有效预测。 |
Abstract:Aiming at the difficulties of judging the endpoint of pulping in Displacement Digester Systems, the on-line calculation method of H-Factor was studied. To reduce the calculation errors, combining the processing mechanism of H-Factor was calculated in a phased way effective cooking temperature, avoiding the wrong action caused by instrument failure. SIEMENS PLC software for H-Factor on-line calculation was developed by using STEP7 and WINCC as hardware development platform. Finally, control the cooking endpoint of Displacement Digester Systems effectively. |
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