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首页> 外文期刊>Paper Technology: The Official Journal of the Paper Industry Technical Association >Finnish system clears surface contamination from drying cylinders and improves heat transfer
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Finnish system clears surface contamination from drying cylinders and improves heat transfer

机译：芬兰系统清除干燥缸表面的污染并改善热传递

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摘要

The combar the drying problems caused by surface contamination,a ReDoc system has been developed to clean and maintain the surface of drying cylinders.In a Finnish speciality mill,after 250 hours of operation,ReDoc removed a 3.3 micrometer layer of pigments and fibre from the surface of Cylinder NO4.The layer had been insulating the cylinder and impairing heat transfer to the paper web.Surface contamination is an increasing problem because of the high steam pressures and closed cycles of a modern papermaking line.Conventional doctoring systems are not achieving the required degree of cleanliness;and,they can leave dirt streaks on the cylinder surface-streaks which lead to deviations in both surface temperature and web moisture profiles.
机译：为解决由于表面污染而引起的干燥问题，开发了ReDoc系统以清洁和维护干燥筒的表面。在芬兰的一家特种工厂中，运行250小时后，ReDoc从表面去除了3.3微米的颜料和纤维层。 NO4汽缸的表面已经隔离了汽缸，并阻碍了向纸幅的传热。由于高蒸汽压力和现代造纸生产线的封闭循环，表面污染正成为一个日益严重的问题。传统的刮刀系统无法满足要求清洁度;并且，它们可能会在滚筒表面条纹上留下灰尘条纹，从而导致表面温度和幅材湿度曲线均出现偏差。

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