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南非DRYTECH闪蒸干燥机介绍

信息来源: | 发布日期: 2013-01-18 | 浏览量:
关键词:DRYTECH闪蒸干燥机,南非DRYTECH

高容量,可用性,热效率高,占地小,非常大的处理能力。

操作:
闪蒸干燥机使用加热的气体气动传达了一个闪光管,并进入一个主空气分离装置的进料;常用的旋风分离器。空气诱导或强制进料区,通过热气体发生器,它带走的饲料和闪烁的水分,因为它传达。的产品被送入进料区的喉部以可控的方式。该颗粒在80%的输送速度的顺序达到的速度。优良的产品,如多级,布袋除尘器,洗涤器和静电除尘器二次扬尘收集所需要的。

进料/放电:
自动和连续的。电动按摩棒,螺旋给料机,旋转气闸,双瓣阀,重力槽。返混是有效的污泥。饲料粉碎机技术引入气流通过文丘里管或使用。

饲料特点:
泥浆,糊剂,和污泥(所有的返混),易碎的滤饼,粉剂,颗粒剂。饲料需求相对一致的颗粒大小。非常大的颗粒提出了挑战。由低到高的进给率

热源:
蒸汽,电力,煤炭,液体燃料,或气体

曝光:
大多直接。流是当前合作。

停留时间:
极短的时间(秒)。通过增加在旋风的时间,停留时间可以改变。

提取:
通常情况下引起的。系统可以燃烧,强迫和诱导风机进行操作。

除尘:
旋风,布袋除尘器,洗涤器,静电除尘器。系统需要大量的粉尘收集,因为这是产品的回收机制。

控制:
PLC,很少固态控制器。系统控制排气温度。可以调节能量和饲料。

优点:
非常亲密的接触空气/气体流
很棒的能量转移
理想的热敏感,易爆或反应产物
小型房地产需求
闪光管是灵活的,可以在植物约束路由
维护成本低 - 几乎没有运动部件
高温作业

限制:
断电,将导致产品陷入干燥机底部
可能会导致由于磨损和冲击的大小减少
高能源成本的球迷和集尘
这项技术,显示高度结合的水分的产品可能不适合
可能会受到高磨损,如果使用不当占

High volume, availability and thermal efficiency covering small to extremely large throughputs.

Operation:
Flash drying uses a heated gas to pneumatically convey the feed up a flash tube and into a primary air separation device; most commonly a cyclone. Air is induced or forced into the feed area through a hot gas generator where it entrains the feed and flashes off the moisture as it conveys. The product is fed into the throat of the feed area in a controlled fashion. The particles attain a velocity in the order of 80% of the conveying velocity. Secondary dust collection such as multiclones, baghouses, scrubbers and electrostatic precipitators are required for fine products.

Feeding / discharge:
Automatic and continuous. Vibrators, screw feeders, rotary airlocks, double flap valves, gravity chutes. Backmixing is most effective on sludge's. Feed introduced into airstream via venturi or use of disintegrator technology.

Feed Characteristics:
Slurries, pastes, and sludges (all with back mixing), friable filter cakes, powders, granules. Feed needs relatively consistent particle size. Very large particles present challenges. Low to high feed rates

Heat Source:
Steam, electrical, coal, liquid fuels, or gas

Exposure:
Mostly Direct. Flow is co-current.

Residence time:
Extremely short (seconds). Residence time can be altered by increasing hold up times in cyclone.

Extraction:
Normally induced. Systems can have combustion, forced and induced draft fans for operation.

Dust Collection:
Cyclones, baghouses, scrubbers, Electrostatic precipitators. Systems require significant dust collection since this is the product collection mechanism.

Control:
PLC, infrequently solid state controllers. System controls on discharge temperature. Can modulate energy and feed.

Benefits:
Very intimate contact with air/gas stream
Excellent transfer of energy
Ideal for heat sensitive, explosive or reactive products
Small real estate requirements
Flash tube is flexible, can be routed within plant constraints
Low maintenance - few moving parts
High temperature operation

Limitations:
Loss of power will cause product to fall into dryer base
May cause size reduction due to attrition and impact
High energy costs for fans and dust collection
Products displaying a high degree of bound moisture may not be suitable for this technology
May be susceptible to high wear if improperly accounted for

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