필터 개요 (Filter  Introduction)

 

필터(Filter)는 일반적으로 공정에 적용되는 유체는 통과하지만 사용자가

요구하는 크기의 고체 입자는 통과하지 않는 필터 카트리지를 삽입하여 유체에서

고체 입자(오염 물질)를 분리하는 기계적 장치입니다.

 

 

코어레서 개요 (Coalescers  Introduction)

 

Coalescer/Separator는 석유화학플랜트에서 용제를 추출하는 공정이나 정유플랜트에서 석유를 정제하는 공정에서 혼합될 수 없는 두 가지 액상의 물질을 침전 또는 안정화

방법으로 분리하는 장비입니다.

 

기본적으로 언급할 수 있는 주요 코어레서에는 2가지가 있습니다.

하나는 경유(등유) 등 기름에서 수분을 제거하는 등의 액체-액체 코어레서이고,

다른 하나는 기체에서 액체를 제거하는 기체-액체 코어레서입니다.

 

 

Depth Media Filter  Introduction

 

Sand, Walnut Shell and Activated Carbon are the typical types of deepbed-media employed depending on the purpose of their installation.

 

Besides the most commonly used media mentioned above, garnet, ilmenite, alumina, magnetite, anthracite and quartz can be considered for the performance and/or as a media support.
As the media depth filter involves the ability to retain the particles that penetrate throughout the medium channels, rather than on its surface, it requires a certain depth (height) of the media bed.

 

In case the bed is not deep enough and/or the flux rate is high, the particles may pass through the media bed all the way to the downstream, or may dislodge the particles which were previously retained in the channel.

 

 

Single Media Depth Filter

In general, the single media filter, represented by “Sand Filter”, employs only one grade of sand as a filtering media. Once it is backwashed, due to the density difference of each sand medium, the bigger and heavier sand medium falls on the bottom, while the finer media remain on top of the media bed.

In this case, the filtration performance will be weighted on top 100mm of the media, resulting in more frequent backwash requirement.

 

 

Multi Media Depth Filter

Besides the support gravel layer, 2 or 3 different types of media can be used in conjuction with one another.

Light in weight but larger sized media such as walnut shell or anthracite on the top layer acts as a coarse filtration. Heavier media with smaller size (dense) such as sand or garnet forms a layer under the first top layer, and retains the smaller particles that passed through the top media bed.

This allows the entire bed to act as a filter allowing much longer filter run times between backwash and more efficient particulate removal.