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Mist Eliminators (Demisters)

Mist Eliminators (Demisters)

KnitMesh Technologies’ Mist Eliminators, also referred to as Demisters, are renowned for their cost-effectiveness, versatility, and efficiency in removing liquid droplets from gas streams.

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Introducing KnitMesh Technologies’ Innovative Mist Eliminators

KnitMesh Technologies produces Mist Eliminators using a bed of knitted mesh. This design creates a twisted path and a large surface area that helps capture droplets in a gas stream. The droplets then combine and drain on the mesh filaments, achieving separation.

There are various installation options available, but typically gas flow is either upward, with the liquid draining against the gas flow, or horizontal, with the liquid draining perpendicular to the gas flow.

For routine applications, KnitMesh Technologies offers standardised designs that have excellent separation efficiency, effective for droplet sizes as small as 2 microns. The pressure drop is typically less than 2.5mbar.

Each Mist Eliminator is customised to fit the dimensions of the vessel or housing it will be installed in. Most Mist Eliminators come with rigid support grids, allowing for direct installation on supports like beams and rings within the vessel. The sectional installation makes handling and access through vessel manways easier. If needed, accessories such as tie wire, bolting, clamps, and support beams can be provided.

 

Typical Applications for Mist Eliminators

 

In many industrial processes, gases and liquids come into contact and create a mist. When the gas moves too quickly, the liquid droplets cannot settle due to gravity and end up suspended in the gas or vapour. It is crucial to remove this entrainment to purify the gas and prevent contamination of the process or the environment.

Oil and Gas Production

 

In the oil and gas industry, Mist Eliminators are primarily used to remove liquid droplets in the form of mist or aerosols from gas streams. These liquid droplets can be present in the form of oil, water, or other chemicals, and their removal is crucial to ensure the efficiency and safety of downstream processes.

  • Three phase separators
  • Inlet scrubbers
  • Compressor systems
  • Cold separators
  • Glycol dehydration
  • Amine absorption columns

Chemical Industry

 

Chemical processes often involve hazardous substances and by-products, and when these substances are in the form of a mist, they can pose significant health risks if inhaled or released into the environment. Mist Eliminators help to prevent the dispersion of these harmful substances by capturing and removing the mist particles.

  • Distillation
  • Gas absorption and stripping
  • Condensation
  • Gas compression
  • Dehumidification and drying
  • Spray removal and desalination
  • Seawater desalination plan

Petrochemicals and Petroleum Refineries

 

Mist Eliminators are essential in petrochemical plants and petroleum refineries to separate liquid droplets from gas streams, ensuring compliance with environmental regulations and maintaining operational efficiency.

  • Olefin and methanol production
  • Oxo alcohols and derivatives
  • Condensation from liquefied petroleum gas
  • Crude oil distillation
  • Catalytic cracking

Power Generation

 

The presence of liquid droplets in gas streams can lead to corrosion of equipment, fouling of heat exchangers, and erosion of turbine components. Mist Eliminators are employed to capture and remove these liquid contaminants before they can cause damage or decrease the efficiency of power generation systems.

  • Steam drums
  • Seawater desalination plant
  • Flue gas desulphurisation
  • Compressor systems

Green Hydrogen

 

During electrolysis, gas streams can contain small liquid particles that need to be removed to ensure the purity and safety of the hydrogen product. Mist Eliminators are employed to capture and separate these liquid droplets, preventing contamination and potential damage to downstream equipment.

  • Water electrolysis
  • Pipeline systems
  • Downstream components
  • Fuel cells

Inorganic Chemicals Industry

 

In the production of inorganic chemicals, Mist Eliminators are deployed to effectively remove liquid droplets or mists from process gas streams. These droplets can arise from various sources such as chemical reactions, cooling, condensation, or interfacial contact.

  • SO3 absorption and air drying
  • NO2 absorption and nitric acid concentration
  • HCl and chlorine absorption
  • Air discharges
  • Urea from gas discharges
  • Fertiliser production
  • Gas scrubbing systems

Separation Performance of KnitMesh Technologies’ Mist Eliminators

 

Features and Benefits

  • Efficient removal of liquid entrainment: ensures cleaner gas streams with reduced re-entrainment risk. 
  • Cost-effective solution: low-cost and high-performance mist elimination method.
  • Versatility: suitable for a wide range of applications and process environments.
  • Optimised performance: ensures effective separation even for small droplet sizes, enhancing overall process efficiency.
  • Tailored solution: customised to fit specific vessel dimensions and configurations.
  • Accessibility and maintenance: sectional construction allows for easy access and handling during installation and maintenance.
  • Easy installation: pre-manufactured mesh pads and support grids simplify the installation process.
  • Reliable and durable: constructed with high-quality materials to withstand corrosive process environments.
  • Precise performance prediction: sophisticated modelling techniques ensure optimal mist elimination performance.
  • Quality assurance: ISO 9001 accreditation ensures consistent quality and performance standards.

Suitable Materials for Mist Eliminators (Demisters)