Front drying system used for multi-cylinder long mesh paper machine

Abstract

The invention discloses a front drying system used for a multi-cylinder long mesh paper machine, and belongs to the field of accessories of paper making equipment. The total number of drying cylinders of the front drying system is increased by 10%-50% than that of drying cylinders of a front drying portion of a traditional front drying system with the same width and the same vehicle speed. A reinforced drying device can be arranged at an outlet of a front drying portion; high padding paper pulp can be made into paper meeting standard requirements; the front drying system has the advantages that drying time is long, the drying effect is good, paper can be sufficiently dried and dehydrated, follow-up glue applying of paper is facilitated, and quality of finished product paper is high; problems of the traditional front drying system are solved; the front drying system is one of the important procedures in successful development of the multi-cylinder long mesh paper machine used for production of high padding paper pulp.

Description

technical field [0001] The invention discloses a pre-drying system used on a fourdrinier multi-cylinder paper machine, which belongs to the field of papermaking equipment accessories, is suitable for use on a fourdrinier multi-cylinder paper machine produced by high-filler paper, and is especially suitable for use on a fourdrinier multi-cylinder paper machine made of active silicon On the fourdrinier multi-cylinder paper machine with calcium acid as paper filler. Background technique [0002] The paper industry is one of the industries with high environmental costs and large actual demand in China (and the world) today. Although the Internet technology is advancing by leaps and bounds, with the rapid development of China's economy and the continuous advancement of the global economy, China and the world have a high demand for paper products. The total demand of China has not changed, but also increased slightly. The demand for paper products means the demand for paper pulp, ...

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Problems solved by technology

[0008] 1. The wet paper sheet stays in the front drying system area for a short time, the drying temperature is low, and the degree of paper drying and dehydration is insufficient, which is not conducive to the subsequent sizing of the paper, and cannot guarantee the long-term stable operation of the entire paper machine system

[0009] 2. Since the calcium silicate filler in the high-filler pulp has a loose pore structure, the moisture is not easy to volatilize directly by heating, and the direct heating and drying method of the double-row dryer used in the traditional pre-drying system leads to the dehydration speed of the high-filler paper Slow, the paper stretch rate is large, the paper drying effect is poor, which is not conducive to the follow-up treatment such as paper sizing

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