气流干燥机简介

气流干燥机利用高速流动的热气流使湿淀粉悬浮在其中,在气流流动过程中干燥。具有传热系数高,传热面积大,干燥时间短等特点。气流干燥机也称“瞬间干

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气流干燥机技术

GEA Barr-Rosin气流干燥机

  GEA Barr-Rosin气流干燥机是一种气动系统,主要用于干燥产品,需要去除游离水分的。干燥发生在几秒钟的事。湿材料被分散到一个流的热空气(或气体),把它传送通过一个干燥管。
  从气流中使用的热,因为它被输送的材料干燥。产品采用旋风分离和/或袋式过滤器。通常情况下,旋风分离器随后通过洗涤器或袋式过滤器作最后清洗的废气,以满足目前的排放要求。
  因为闪烁熄灭,即刻的表面水分的干燥气体进行冷却,而不明显地增加了产品的温度,升高干燥温度,可用于许多产品。
  对于更大的热效率和惰性需要的地方,回收废气的都可以使用。这可以实现我们所有的气流干燥系统和翻新改造,对客户现有的干燥作业。
  许多在世界上最大的气流干燥机- 一些在单个系统中的水分蒸发量每小时超过20吨。进气口温度范围从200 - 1400°F(100℃ - 650℃),而气流可以超过12万立方英尺(200000立方米)。
  气流干燥机已用于干燥产品在许多行业中,包括食品,化工,矿物和聚合物。一个广泛的范围内的进料,包括粉剂,蛋糕,颗粒,薄片,糊剂,凝胶,淤浆可以被处理。对于泥浆,糊剂,或粘性物料,返混的湿饲料干燥产品的部分,以产生一个合适的空调材料是必需的。
  这种技术也可以用于冷却应用。
  GEA Barr-Rosin研究与发展中心配备了中试规模的气流干燥机进行试验。
The GEA Barr-Rosin Flash Dryer is a pneumatic system primarily used to dry products requiring the removal of free moisture. Drying takes place in a matter of seconds. Wet material is dispersed into a stream of heated air (or gas) which conveys it through a drying duct.
Using the heat from the airstream, the material dries as it is conveyed. Product is separated using cyclones, and/or bag filters. Typically, cyclones are followed by scrubbers or bag filters for final cleaning of the exhaust gases to meet current emission requirements.
Elevated drying temperatures can be used with many products since the flashing off of surface moisture instantly cools the drying gas without appreciably increasing the product temperature.
For even greater thermal efficiency and where inertisation is required, recycling of exhaust gases can be used. This can be implemented on all our airstream drying systems and retrofitted on customer's existing drying operations.
Many of the largest dryers in the world are flash dryers - some exceeding 20 tons of water evaporation per hour in a single system. Inlet air temperature ranges from 200- 1400°F (100oC -650oC) while airflows can exceed 120,000 cfm (200,000 m3/hr).
Flash dryers have been used to dry products in many industries including food, chemical, mineral and polymer. A broad range of feed materials including powders, cakes, granules, flakes, pastes, gels, and slurries can be processed. For slurries, pastes, or sticky materials, backmixing of the wet feed with a portion of dry product to produce a suitable conditioned material is required.
This technology can also be used for cooling applications.
The GEA Barr-Rosin Research and Development Center is equipped with a pilot scale flash dryer for conducting trials.

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