Introduction of air drying method in filter press equipment

Due to the excessive speed of resource development in China in recent years, the resources of papermaking in China have dried up, so we are required to improve on resources and equipment, so as to continue to develop and use in the environment of “dry, exhausted and mixed” resources. Therefore, the mechanical equipment has been more vigorously developed, and thus has achieved today.

In the past ten years, China's excessive development of coal resources has been the most serious. As an important equipment in the coal industry, the filter press has become an indispensable part of the coal preparation equipment in the coal industry. It has the functions of filtration separation and drying. For today's China, the water in coal is not reduced by 1%, and the utilization rate of coal is increased by at least 5%, so that the limited resources are better used.

For the current filter press equipment, it is no longer a technology ten years ago, it is the water problem in the filter cake has been plagued by this line. But now it has been greatly improved, using the air blowing method, so that the filter cake of the filter press has dropped from the lowest 25% in the past to less than 10%. Then the anti-drying method (this method is generally used on the membrane filter press equipment). What is it?

It is also simple to say that when the filter cake in the filter chamber of the filter press reaches the design range, the advanced stop feed, the feed valve is automatically closed, the filter cake is pressed once by the conventional method, and then the reverse feed is high. Pressurized air (generally air compressor compressed air provides gas), so that the filter plate recess and the filter cake expand, the filter cake is pressed a second time, and the high-pressure air passes through the filter cloth to the moisture in the filter cake. Three dryings, and so-called dry drying. In this way, the moisture in the filter cake is effectively reduced, such as: mechanical water, adsorbed water, diaphragm water, capillary water, structural water. This achieves the filter cake equipment requirements for filter cake moisture.

The experiment shows that the filter plate 300 X 300mm, the thickness of the filter cake is 30mm, the rated pressure of the air compressor is 3000kpa, the gas volume is 20m'/h, the feed air is dried for 20min, and the moisture of the filter cake can be reduced to below 14%. Therefore, the blow drying method can effectively reduce the moisture in the filter cake.

The air drying method can significantly reduce the moisture of the filter cake of the filter press, which is conducive to improving the utilization rate of coal in China, and reducing the economic energy consumption rate of China, which benefits our children and grandchildren. Take the road to sustainable development.

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Zhuhai Mingke Electronics Technology Co., Ltd , https://www.mingke-tech.com