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Language: korean

Conflict of Interest: In relation to this article, we declare that there is no conflict of interest.

Publication history: Received November 7, 2006
Accepted December 13, 2006

This is an Open-Access article distributed under the terms of the Creative Commons Attribution Non-Commercial License (http://creativecommons.org/licenses/bync/3.0) which permits unrestricted non-commercial use, distribution, and reproduction in any medium, provided the original work is properly cited.

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제지공정 건조 실린더의 모델링 및 모사

Modeling and Simulation of Drying Cylinders in Paper Processes

이은호 곽기영 여영구^†

Eun Ho Lee Ki-Young Kwak Yeong-Koo Yeo^†

한양대학교 화학공학과, 139-791 서울시 성동구 행당동 17

Department of Chemical Engineering, Hanyang University, 17 Haengdang-dong, Seongdong-gu, Seoul 133-791, Korea

Korean Chemical Engineering Research, February 2007, 45(1), 17-24(8), NONE Epub 5 March 2007

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Abstract

본 연구의 목적은 제지공정에서 건조 실린더의 모델을 규명하고 입력변수들에 대한 공정의 응답 특성을 분석하는 것이다. 모델의 규명은 실제 공장의 운전 데이터에 근거하였는데 건조공정에서는 실린더로 공급되는 수증기의 압력이 주요 변수가 된다. 수증기 응축액으로부터 캔버스로의 열전달 계수는 실린더 및 웹과 펄프의 열 전도도와 운전 데이터에 근거하는 실험식으로 나타낼 수 있음이 밝혀졌다. 실린더 모델은 측정되는 수분함량과 웹 온도를 이용하여 검증하였으며 건조 공정의 안정성은 실린더 모델로부터 얻은 전달함수로부터 확인하였다.

The purpose of the present study is to identify the drying cylinder model in paper plants and to analyze characteristics of process responses for changes in input variables. The model developed in this work is based on actual plant operation data where the steam pressure applied to the cylinder behaves as the major variable. It is found that heat transfer coefficients from the condensate to the canvas could be represented as empirical relations based on heat conductivities and operation data. The effectiveness of the cylinder model is demonstrated by the measured moisture contents and web temperature. Stability of the drying process is analyzed based on the transfer functions derived from the cylinder model.

Keywords

Paper Process Drying Cylinder Heat Transfer Coefficient Simulation Stability

References

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