A protein powder drying system and drying method

Abstract

The invention discloses an albumen powder drying system. The albumen powder drying system comprises a flash evaporation bin, a first-level cyclone separator, a material drying pipe and at least one second-level cyclone separator, all of which are sequentially in communication. A pulverizer is arranged in the flash evaporation bin, and a material inlet and a first hot air inlet are formed in the side wall of the flash evaporation bin. The top of the first-level cyclone separator is connected with an induced draft fan so that damp and hot tail gas in the first-level cyclone separator can be exhausted. A connecting pipeline between the material drying pipe and the first-level cyclone separator is provided with a second hot air inlet. The bottom of the first-level cyclone separator and the bottoms of the second-level cyclone separators are fixedly connected with air closing devices, and the bottoms of the second-level cyclone separators are provided with material collecting barrels. The invention further discloses a method utilizing the drying system for drying albumen powder. Compared with the prior art, the drying system is high in drying speed and high in energy utilization rate.

Description

technical field [0001] The invention relates to the technical field of airflow drying systems, in particular to a protein powder drying system and a drying method. Background technique [0002] At present, whether it is a laboratory or a factory in China, the drying method of protein powder is mostly adopted by spray drying. This drying method is to atomize the protein powder solution in a centrifugal or high-pressure manner, and spray it in a drying tower with a high inlet air temperature. Let the high-temperature air flow take away the water in the solution, so as to obtain dry protein powder. Protein powder is a kind of material that is susceptible to moisture and corruption. It has strict requirements on moisture content. In order to ensure that the moisture content is low enough during the spray drying process of protein powder, the exhaust air temperature is usually higher than 80°C, which consumes a lot of energy. It is suitable for laboratory production. Take sample...

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Problems solved by technology

When the flash dryer is used to dry protein powder, when the exhaust temperature is set at a high level, the energy consumption will be large and the material loss will be high. When the setting is low, the protein powder will have a high moisture content, which does not meet the product requirements.

[0004] Chinese patent CN201510743452.3 discloses a rice protein powder drying equipment, which includes a blower, an air heater, a pulse dryer, a cyclone separator, a bag filter and an exhaust device connected in sequence, and the combination of the cyclone separator and the bag filter There is a material collector at the bottom, a material feed port is provided on the connecting pipe between the air heater and the pulse dryer, a screw feeder is provided on the material feed port, the air heater is provided with at least 3 hot air outlets, and the hot air outlet Both are connected with the dry air inlet of the pulse dryer, and the hot air outlet is equipped with an electromagnetic regulating valve. The material inlet is equipped with a sensor for detecting the amount of material fed and controlling the opening and closing of the above electromagnetic regulating valve. The air inlet of the blower is also set. There is an air filter, although it has the function of automatically adjusting the drying wind energy according to the feed amount, but the hot tail air of the whole system is directly discharged, and the energy utilization rate is low

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