稀相气力输送是输送物料常用的方法。
Dilute phase pneumatic conveying is a common method of conveying materials.
这个过程使用相对大量的空气来输送相对少量的材料，并且比密相系统的压力更低。材料在空气中悬浮的同时，通过系统高速运输。
This process uses a relatively large amount of air to transport a relatively small amount of material, and the pressure is lower than that of the dense phase system. While the materials are suspended in the air, they are transported through the system at high speed.
它通常被称为悬浮流，因为粒子在空气中被悬浮着，当它们被吹或吸过管道时。为了使物料保持悬浮状态，有必要保持小的输送空气速度，对于大多数物料来说，这个速度大约是2500 - 6000 fpm（约10-30m/s）。
It is often called suspended flow because particles are suspended in the air when they are blown or sucked through the pipe. In order to keep the material suspended, it is necessary to maintain a small conveying air speed. For most materials, this speed is about 2500 - 6000 FPM (about 10-30m / s).
稀相气力输送系统体系的特征是:
The characteristics of dilute phase pneumatic conveying system are:
高速输送，每分钟3200到8000英尺(约1000-2500米)
High speed transportation, 3200 to 8000 feet per minute (about 1000-2500 meters)
工作压力在5-12 PSIG(正)或4- 12”Hg的负压力范围内
The working pressure is within the range of 5-12 psig (positive) or 4-12 "Hg
高空气与固体的负载比(> 2.0)
High air to solid load ratio (> 2.0)
用稀相系统输送的物质范围几乎没有限制。通常以稀相体系输送的产品包括面粉、树脂、特殊化学品、饲料、颗粒状和托盘状产品。在各种类型的气力输送系统中，稀相系统的成本通常是低的。
The range of substances transported by dilute phase system is almost unlimited. Products usually transported in dilute phase system include flour, resin, special chemicals, feed, granular and tray products. In various types of pneumatic conveying systems, the cost of dilute phase system is usually low.
稀相气力输送系统限制
Limitation of dilute phase pneumatic conveying system
需要一个相对较高的风量和速度:所以功率要求也很高。较高的气流速度将有以下其他缺点:
A relatively high air volume and speed are required: therefore, the power requirements are also very high. Higher air velocity will have the following other disadvantages:
1.由于该产品对管道的磨损要大得多，因此该系统不适用于易降解和/或具有研磨性质的材料。
1. Since the product has much greater wear on the pipeline, the system is not suitable for materials that are easy to degrade and / or have abrasive properties.
2.产品可能会变形或被压碎，因此不建议将此工艺用于易碎产品。
2. The product may be deformed or crushed, so this process is not recommended for fragile products.
稀相体系的类型
Types of dilute phase systems
稀释相系统的设计方法有三种:
There are three design methods for dilution phase system:
1.正压稀相气力输送系统
1. Positive pressure dilute phase pneumatic conveying system
2.负压或真空稀相气力输送系统
2. Negative pressure or vacuum dilute phase pneumatic conveying system
3.正负压结合气力输送系统的组合
3. Combination of positive and negative pressure combined pneumatic conveying system
The above is a detailed introduction about Jiangsu pneumatic conveying equipment. I hope it will help you If you have any questions, please contact us We will provide you with professional service http://www.sddyfd.com/
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