影响污泥烘干机性能的主要因素有哪些？

What are the main factors affecting the performance of bag filter?

污泥烘干机性能与滤袋上的粉尘层、滤料的特征、粉尘的特点、过滤风速等有密切关系。

The performance of the bag filter is closely related to the dust layer on the bag, the characteristics of the filter material, the characteristics of the dust and the filtering wind speed.

1、粉尘层的影响：

1. Impact of dust layer:

滤料净化含尘气体开始时，滤料上无粉尘层，捕集粉尘的能力较低; 当粉尘层形成后，对于粉尘有很好的捕集作用。

At the beginning of purifying the dust containing gas with filter material, there is no dust layer on the filter material, so the ability of collecting dust is low; when the dust layer is formed, it has a good effect on collecting dust.

2、粉尘特性的影响：

2. Influence of dust characteristics:

粉尘粒径对污泥烘干机过滤效率有很大影响。对于 1μm 尘粒，其分级过滤效率可达 95% ; 对于大于 1μm 尘粒，可稳定地获得 99% 以上的过滤效率。尘粒携带的荷电越多，其过滤效率越高，利用此特征，在污泥烘干机入口或入口前使用荷电，对于 1．6μm 以上尘粒的捕集效率可达 99． 99% 。

The particle size of dust has a great influence on the filtration efficiency of bag filter. For 1 μ m dust particles, the filtration efficiency can reach 95%; for more than 1 μ m dust particles, the filtration efficiency can be more than 99%. The more charge the dust carries, the higher the filtration efficiency. Using this feature, the collection efficiency of the dust above 1.6 μ M can reach 99.99% when the charge is used at or before the inlet of the bag filter.

3、滤料特性的影响：

3. Influence of filter material characteristics:

在织造滤布中，短纤维织物的表面绒毛多，容易形成稳定的一次粉尘，其过滤效率比长纤维织物高。

In the process of weaving filter fabric, there are many fluff on the surface of short fiber fabric, which is easy to form stable primary dust, and its filtering efficiency is higher than that of long fiber fabric.

4、过滤风速的影响：

4. Impact of filtering wind speed:

适当的过滤风速容易使粉尘在滤袋表面形成粉尘层，有利于粉尘的捕集。

Appropriate filtering wind speed is easy to form dust layer on the surface of filter bag, which is conducive to dust collection.