Overall demand is high thermal efficiency, low energy consumption, simple configuration, easy to control, small footprint, operating environment health and safety. At present, the salt industry to use more common drying equipment: rotary tube dryer, indirectly heated rotary driers, disc continuous dryer, air dryer (divided pulse stream, flow rotation, positive and negative two air drying ), spin flash dryer, rotary drum dryer, spray dryer (divided granulated, powdered, centrifugal, pressure), vibration fluidized bed dryer, the static vacuum dryer, hot air circulation oven, rake , paddle vacuum dryer, boiling dryer (horizontal, vertical) and the like.

These drying equipment for product quality to provide a guarantee, however, there are exhaust collect "dust" problem. Due to the increasing nanoscale products, more and more original fine particle size, water content of paste materials potentially improve, companies continue to add to the large scale development, enterprise desire combined drying equipment. In particular, some large-tonnage products, such as precipitated calcium carbonate, the current national production of 300 million tons, the smallest production line with an annual output of 10,000 tons, 100,000 tons of scale to five sets of drying equipment, Guangxi, a business plan to get 500,000 tons, At the current level of drying equipment, regardless exhaust area after the drying equipment or product revenue "dust" is a great amount.

According to the current industry commonly used pulse bag filter, the operating environment is very bad, we must take effective measures to solve them. We therefore hope that the device research and development unit focused on solving two problems, one object of fine high water content of paste and dried issue, and second, after the object dry exhaust collect "dust" industrial hygiene problems. Still calcium carbonate industry, for example, more than 200 companies in the drying equipment selection, basic use of indirectly heated rotary driers, disc continuous dryer, rotary tube dryer or the like, although the production efficiency are met, the energy consumption and exhaust revenue "dust" is not ideal, a calcium carbonate into the business, from the ground to the roof are covered with a layer of white calcium carbonate powder, even in the office furniture is a layer of white, there are management problems in this regard more important is dried exhaust collect "dust", but off. The industry has recently introduced a US company DuPont dust removal equipment, basically solved the problem.

Thus, the combination of drying equipment should include: providing a heat source equipment, and secondary drying equipment, exhaust collect "dust" and other equipment, you want the device manufacturing, research units fuss high thermal efficiency, low energy consumption, simple configuration, easy to control, etc. in a combination of drying equipment to make a fuss, serve others, develop their own. If the drying problem of calcium carbonate industry solved, realized device efficient, environmentally friendly, like other varieties of dried problem solved.

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