Introduction of fiber demister :

The fiber demister also known as a fiber mist eliminator or fiber bed filter, is a device used to remove fine liquid droplets or mist from a gas stream. It plays a crucial role in separating entrained liquids from process gases in a variety of industries.

The fiber demister consists of two concentric screens or parallel flat screens filled with compressed fiber pads.

Fiber demister are individually designed and manufactured with enclosures made of a variety of alloys, thermoformed plastics or fiberglass reinforced plastics. The compressed fiber bed is made of special glass, ceramic, polypropylene, teflon or polyester. It turns out that this type of mist eliminator is very suitable for sulfuric acid plants, nitric acid plants and hot phosphoric acid plants; Chlorine and other chemical plants; Pulp mill; Textile mills; Asphalt saturation tower; Food processing; Chrome plating process; Turbine lubrication tank exhaust pipe and plastic molding. Applications containing fluoride, high pH or steam can use specially made carbon fibers.

Characteristics of fiber demisters:

Fiber Bed Construction:

Fiber demisters utilize a packed bed of fine, randomly oriented fibers, typically made from materials like glass, metal, or polymers.

The tortuous flow path through the fiber bed enables efficient droplet capture and coalescence.

Droplet Removal Mechanism:

As the gas stream passes through the fiber bed, liquid droplets collide with the fibers and coalesce into larger droplets.

Gravity and inertial forces then cause the coalesced droplets to separate from the gas flow.

Structure of fiber demister :

The typical fiber demister is composed of tubular fiber bed element (size is customized according to the working condition), bracket, flange, outer cover pressure vessel and other components.

Classification of fiber demister :

According to the trapping mechanism of fiber demister, fiber demister can be divided into low-speed type and high-speed type.

The low-speed fiber demister is an efficient fiber demister based on Brown diffusion trapping, which is characterized by low gas velocity, between 0.08 and 0.2m/s, and is used to trap fog particles with an average of less than 1μm, and the trapping efficiency is between 94% and 99.7%. For fog particles larger than 3μm, the capture efficiency is 100%.

Features of fiber demister :

Reduce or eliminate visible chimney plume.

Design capacity can be adjusted without limitation.

Ensure that the pressure drop is less than 40 mm (1.5 ") W.G.

Interchangeable with existing fiber pad equipment.

Capture submicron particles with a diameter of 0.1 micron or less.

Property of fiber demister :

The selection of fiber demister should be accurately calculated according to the gas flow, pressure and temperature under the actual working conditions of the enterprise to confirm the size, form, number and placement of the demister components to ensure that the national standards for pollutant emission in relevant industries are fully met.

Application of fiber demister :

Fiber demister is specially used to remove various fog particles in the air stream, not only can remove large particles in the air stream (diameter > 3μm), but also very effective for removing sub-particles (diameter < 1μm). Has a certain self-cleaning ability, can achieve zero maintenance.

It can be widely used in the industrial production process to remove sub-micron liquid droplets and soluble solid particles in the gas, to protect downstream equipment, purify process gas, recover available solvents and oils, and eliminate air pollution.