Filter Separator

Filter Separator

Overview

As an efficient gas-solid-liquid filtration and separation device, the filter separator is applicable to natural gas, coalbed methane and other media. It removes solid particles such as dust and rust as well as liquid droplets from gas, reducing damage caused by impurity-laden gas to compressors, flow meters, burners, instruments and other equipment during transmission. High-performance filter separators play a vital role in protecting precision instruments and equipment within gas processing and transmission systems.

Working Principle

Gas carrying solid particles and liquid droplets enters the filter separator and first passes through filter elements for primary filtration. Solid particles are trapped while liquid droplets are coalesced. Owing to the structural features of filter elements, solid particles are retained on the outer surface of or accommodated inside the filter elements. Liquid particles coalesce into larger droplets and flow into the liquid storage tank.

Gas after primary filtration flows into the separation chamber. Mist-like liquid entrained in the gas is captured by a mist eliminator, continuously coalescing on its inner surface to form larger droplets, which separate from the gas under gravity.

Technical Parameters

Design Standard: GB/T150-2024 Pressure Vessel

Structure Type: Vertical, Horizontal

End Cover Type: Quick-opening Door, Flange Cover

Connecting Flange Standard: HG/T20592 ~ HG/T20615-2009 or ANSI B16.5, etc.

Filter Element Material: Polyester Fiber

Performance Indicators

Design Pressure: ≤10 MPa

Design Temperature: -40℃ ~ 80℃

Initial Pressure Drop: ≤5 kPa

Filtration & Separation Accuracy and Efficiency:

Solid: ≤1 μm, 99%

Liquid: ≤5 μm, 98%

Filtration & Separation Accuracy Grades: 0.3 μm, 1 μm, 3 μm, 5 μm, 10 μm, 20 μm, 50 μm

Application Scope

For filtration and separation of natural gas, coalbed methane and biogas;

Removal of desiccant particles and liquid droplets downstream of drying beds;

Removal of catalyst powder and liquid droplets downstream of catalyst beds;

Gas filtration and separation before metering and pressure regulating stations;

Gas filtration and separation for urban gas distribution systems.

Structure Type

Type K, Type F

Type K — Quick-opening Type

Type F — Flange Cover Type

Installation Type

Type V, Type H

Type V — Vertical Installation

Type H — Horizontal Installation

Specification Definition

Example: DN250/DN100 – Main shell diameter DN250, inlet and outlet diameter DN100

Installation and Connection Method

Filter separators can be installed horizontally or vertically. For horizontal installation, the horizontal tolerance of the main axis of the equipment shall be less than 5/1000. For vertical installation, the verticality tolerance of the main axis of the equipment shall be less than 3/1000. The equipment adopts flange connection and is equipped with vent valve, safety valve, pointer differential pressure gauge, liquid level gauge and pressure gauge.

Structural Dimension Table for FH Type and KH Type Filter (Unit: mm)