Energy-saving spray drying device based on waste heat recovery heat pump technology

Abstract

The invention discloses a waste heat recovery heat pump technology-based energy-efficient spray drying device including a degassing tank, a filter, a spray drying tower, a cyclone separator and a material receiving little splitter; pulp enters through the vacuum pump function into the degassing tank, and then enters into the filter for filtration, the filtered pulp enters through the vacuum pump function into the spray drying tower, electric heated hot air is introduced into the spray drying tower, dried particles and the hot air enter into the cyclone separator, under the effect of an air supply fan, the separated particles enter into the material receiving little splitter, finally product is collected from the material receiving little splitter; the device also includes a heat source supply cycle, a refrigeration loop cycle and an air and pulp preheating cycle. The energy consumption can be effectively reduced by the efficient use of the heat source cycle, production cost is reduced, and the environment is protected.

Description

technical field [0001] The invention relates to an energy-saving spray drying device based on waste heat recovery heat pump technology, which belongs to the technical field of drying equipment. Background technique [0002] Spray drying technology has a history of more than 100 years. In 1865, since spray drying was first used for egg processing, this process of changing from liquid to solid powder in a short time after atomization and drying. By the 1930s and 1940s, spray drying technology had been widely used in the production of dairy products, detergents, dehydrated foods, fertilizers, dyes, and cement. At present, the common instant coffee, milk powder, and instant food soups are produced by spray drying. The product obtained is dried. The dairy industry was the first to use spray drying for industrial scale production in my country, followed by detergent and dye industries. At present, it has been widely used in all industries involved, especially in the ceramic and ...

AI Technical Summary

Problems solved by technology

[0003] There are also shortcomings in the current spray drying technology. During the drying process, hot air needs to be continuously provided to dry the slurry, and a large amount of water will evaporate in the middle, resulting in a large amount of energy consumption.

And in the traditional spray drying method, the dried hot air and hot steam are directly discharged into the air through the chimney, which not only causes a large amount of heat energy loss, but also eliminates a lot of harmful dust particles, which brings damage to our living environment.

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