GEA contact fluidizers for bulk chemicals drying
The GEA CONTACT FLUIDIZER is a two-stage system for bulk chemicals drying that keeps you in control of particle flow and final moisture content. Designed to give you confidence in reproducible processing at high capacity, our system can also help you reduce overall energy draw and allow you to reuse waste heat and recycle solvents, for a lower environmental footprint.
Proven technology for drying bulk s-PVC, HDPE, vitamins and much more
We have configured and installed more than 1100 industrial fluid bed plants for bulk chemical applications, including around 140 plants for s-PVC drying. We really do know a thing or two about designing systems for a broad range of applications, from commodity polymers such as s-PVC and HDPE, to dietary supplements including vitamins, and emerging or bespoke chemicals.
Contact fluidizer technology, in a nutshell …
The GEA CONTACT FLUIDIZER is a two-stage system that first evaporates surface water from the product feed in a back-mix chamber, and then removes remaining, internal water by evaporation in a dedicated true plug flow section.
Some of the bulk products suitable for drying using GEA CONTACT FLUIDIZER fluid bed technology:
- s-PVC
- HDPE
- Vitamins
- PAN
- ABS
- Sodium bicarbonate
- Dense sodium carbonate
- c-PVC
- MBS
- POM
- Modified lignin
乾燥工程
湿った粉末を CONTACT FLUIDIZER の完全混合部に供給すると、その場で蒸発が始まり、粉末がすぐに流動化します。独自の回転式フィードスプレッダーにより、完全混合部の「均質性」だけでなく、その性能を維持するのに欠かせない湿った供給材料の連続的な均一分配が保証されます。半乾きの粉末は、粉末の滞留時間が完全に管理されているプラグフロー部に送られます。最終段階として製品の冷却が必要な場合は、冷却パネルを内蔵したプラグフロー部を設けて流動床を拡張することができます。
粉末の流動化に必要なガスは個々のプラントに合わせたオーダーメイドの GILL PLATE によって分配され、床上にガスが均一に分配されるとともに、塊となった製品が適切に搬送され、シャットダウン時には流動床が効率的に空冷されます。
熱効率の面では、流動粉末層に加熱パネルを沈めることで、パネルからの熱が流動ガスによって効率よく粉末に伝わるようにするという設計が特徴的です。
機能:
- 水性の粉末飼料を扱うオープンシステム、あるいは有機溶剤をしみ込ませた粉末用の密閉システムとしてオーダー可能
- エネルギー原単位を削減
- 平均粒子サイズが 50～800 μm
- 製品の滞留時間が長く、乾燥が穏やか
- 完全混合部とプラグフロー部の組み合わせにより、乾燥プロファイルを最適化
- 加熱パネルの採用により空気消費率を削減
- 効率的な洗浄のために CIP システム非装備の仕様でもお求め可能
- フィルター内蔵仕様もあり
Optimize functionality and process parameters
Offering top performance and safety, our CONTACT FLUIDIZER is packed with GEA innovations to help enhance efficiency, reduce energy use, and ensure great product quality. Partner with us at GEA and we’ll use our dedicated small-scale platform to test and optimize process parameters for your products, so we can tailor the best CONTACT FLUIDIZER configuration for your application.
GEA CONTACT FLUIDIZER – GEA expertise supporting your business:
- Our dedicated small scale testing system lets us optimize process parameters
- Vertical fluid bed heating panels help to reduce energy use, improve efficiency, and prevent powder settling on surfaces
- The GEA NIRO® BARRIER GAS SYSTEM, installed as standard, prevents the formation of wet deposits and condensation on the internal drying chamber walls
- The controllable, proprietary GEA NIRO® ROTARY FEED DISTRIBUTOR for wet feed cake delivery, installed as standard, optimizes dispersion into the back-mix chamber
- GEA Niro TRUE PLUG FLOW compartments allow for control of powder residence time, air flow and depth
- Technology for heat recovery and/or organic solvent recycling can be included as standard
- Particle flow is controlled and directed through the back-mix chamber using customized GEA NIRO® GILL PLATE components that are also designed to transport powder lumps
- For challenging products the GEA NIRO® LUMP TRAP SYSTEM can also be installed
- Automated CIP units are user friendly, and feature dedicated nozzles optimized to maximize cleaning efficiency for individual fluid bed configurations
- Configurable closed loop cycle systems are available for processing toxic or hazardous products.
How does it work?
The GEA CONTACT FLUIDIZER comprises an initial back-mix chamber that contains an array of vertically oriented heating panels through which hot water or steam circulates, and which are completely submerged in the layer of wet particulate product to be dried. Gas blown through GEA’s unique GILL PLATES at the base of the chamber causes the particles to flow like fluid and come into direct contact with the heating panels. The surface moisture – which may be water, or a solvent - is then evaporated, collected and removed.
When the moisture in particles in the back-mix chamber has reduced to a certain level, these lighter weight particles are transported into the second, true plug flow section in which the drying process is continued to ensure that the desired final moisture content is achieved.
In contrast with other contact fluid bed designs, the plug flow section of the GEA CONTACT FLUIDIZER technology features discrete compartments, and directional gas flow to prevent back mixing. Controlled powder movement in the plug flow section also helps to prevent scorching and heat damage. Product height in the plug flow compartments can be automatically/remotely adjusted.
Dedicated GEA know-how for every application
GEA has decades of experience configuring CONTACT FLUIDIZER systems for a wide range of products. For commodity products, for example, s-PVC, the process of design and configuration can be fast and simple. If you need a more specialised solution, then we’ll sit down with you to learn about your products, challenges and expectations. We can then work together to design and fine-tune the best CONTACT FLUIDIZER technology for your needs.
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関連製品
流動床乾燥機 (静的)
GEA の静的流動床は、粉末、結晶、細粒の乾燥、冷却、か焼処理産業全体で広く使用されています。
SPRAY FLUIDIZER
SPARSPRAY FLUIDIZER™ は、非感熱性の給液 (液体、懸濁液、スラリーまたは溶融物) から固体を凝固することで、無塵で自由流動性の、高密度でコンパクトな細粒を生成するためのソリューションです。
VIBRO-FLUIDIZER® 流動床
後処理 (2 回目の乾燥・冷却) は、粉末製造に欠かせない部分です。VIBRO-FLUIDIZER™ 流動床は、それが微粒子でも、凝集体製品でも、その効率と優しい処理で認識されています。
従来型の噴霧乾燥機
従来型の噴霧乾燥機では、効率が非常に高い方法で、溶液を粉末にします。これは、酪農、食品、および化学産業というさまざまな分野で使用されており、そのパフォーマンスで名声を得ています。
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