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Significance of Yankee hood in tissue industry

2020-04-20 17:34:08
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Under the new normal of economy, China's industrial economy has entered a period of coordinated development of resources. Yankee hood not only needs to pay attention to economic benefits, but also needs to obtain the corresponding environmental protection effects through the rational allocation of resources. However, the investigation shows that the air consumption per ton of tissue paper is more than 3.5t in the production process of most of China's tissue paper factories. Compared with the same drying form in foreign countries, the energy consumption is more than 30% - 50%. On the one hand, it shows that the drying capacity of China's tissue paper machine has considerable potential. On the other hand, it also shows that there is a serious energy waste problem in the condition of not fully playing the performance of tissue machine. It can not meet the requirements of the concept of sustainable development. How to obtain higher capacity with lower energy consumption, or improve the control efficiency of energy conservation and emission reduction, and promote industrial innovation and development,  is the core issues faced by relevant departments.

Jinan Yankee hood

With the continuous deepening of the concept of sustainable development, rational use of energy and energy conservation has become a important influencing factor in the development of paper industry. At present, the tissue paper machine wants to flexibly use the drying optimization and energy saving technology. Yankee hood is the key to protect and optimize the drying environment, and to ensure product quality through the adjustment of air balance to help hood manufacturers reduce drying costs. Yankee hood itself is a kind of drying device which combines the paper contact drying and convection drying. Compared with the ordinary drying, its performance is about 4-10 times higher. Using the basic principles of contact drying and convection drying, the high temperature and high speed hot air can make the hot air produce strong convection heat transfer to the paper, blow the hot air vertically to the paper, reduce the thickness of the interface air film, even directly destroy the air film, improve the coefficient of heat and mass transfer, strengthen the evaporation in this way, improve the capacity of the paper machine and the drying efficiency of the drying cylinder, and in the sanitation Paper production plays an irreplaceable role, not only can effectively save energy, but also can improve the softness and loose thickness of tissue paper products.

Yankee hood equipment

The standard Yankee hood has been more and more popularized. It belongs to one of the hot air hoods of drying cylinder. It adopts impact drying. The air flow temperature in the operation process can reach about 200 ℃, and the gas flow rate is 50-160m / s. according to the actual demand, the mechanical structure from the transverse nozzle box to the pressure ventilation system can be reasonably designed. The Yankee hood can complete the drying work under high impact temperature. It can be divided into three independent areas, namely high temperature toe shaped area, mixing area and drying area. The temperature of the three areas can be adjusted according to the quality and production demand. However, in practical application, considering the specific situation of the tissue paper factory, the standard Yankee hood is usually improved and optimized to further improve the energy saving effect.

Shandong Yankee hood

In a word, tissue paper is very common in daily life. It needs to consume a lot of energy in the production process, so it is of great significance to do a good job in energy saving. Relevant practice shows that if the steel Yankee dryer and Yankee hood can be used together in tissue paper production, it can not only better meet the high-speed and high-quality operation requirements of high-speed tissue paper machine, but also improve the energy-saving effect, reduce the energy consumption per ton of paper by more than 30%, with more superior energy-saving effect. Not only that, with the progress of science and technology, the application of advanced technology can not only improve the energy-saving effect, reduce production costs, but also reduce the workload of employees and promote the improvement of work efficiency, which should be promoted and popularized.

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密闭气罩Address: Hi tech Industrial Park, Linqing City, Shandong Province (shilitun, Xinhua office)

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