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Oil Coalescence In India

Separation of the various crude fractions for purification or commercialization is done in downstream oil and gas activities. During the separation process, many liquids and gases are separated from the hydrocarbon mixture in separating units. One example is the separation of gas-oil, fuel-gas, and water-gas. The coalescer is a crucial piece of equipment in this process.

What is Coalescence?

A coalescer is a piece of industrial equipment used in the oil and gas processing and petrochemical industries to achieve coalescence. The process of causing liquid aerosols to agglomerate (combine) into larger droplets large enough to be drained away gravitationally is known as coalescence. An emulsifier, which creates emulsions, works in the opposite manner as a coalescer.


A coalescer can be used alone or as part of a larger separation system. The sort of equipment to use will be determined by the nature of the substance to be separated. An oil coalescer or fuel coalescer, for example, can be used to separate gases from gas-fuel or gas-water emulsions, while a gas coalescer can be used to recover oil or fuel from a water-oil mix.

Oil Coalescence in India

Application of Coalescence:

Coalescers are commonly used in downstream oil and gas operations in the petrochemical industry for liquid-liquid or liquid-gas separation during product refining processes. In the downstream industry, liquid-gas coalescers, for example, are used to ensure high product purity by separating water vapour and liquid hydrocarbons from natural gas streams.


Coalescers can also be used to prevent corrosion in refining equipment. Coalescers are used in the petrochemical sector as part of filtering systems to remove water vapour from products before storage.

How does Coalescence work?


The separating mechanism is usually made up of a series of baffle walls or filters placed throughout the system. The system is set up so that the various components of the mixture are trapped at different intervals by the separating devices. When it comes to water-oil separation, baffle fibres separate the denser oil molecules while allowing water molecules to permeate and congregate beneath the baffle walls, where they can be physically drained.



  • Electrostatic coalescer

Electrostatic coalescers use electric charges (DC or AC, or a combination of both) to cause liquid molecules to coalesce onto the surface of a collection tank. They're used on offshore production rigs and are particularly useful in water-hydrocarbon emulsions. The electrostatic charges aid in the destabilisation of the emulsion by increasing the size of the molecules, causing them to sink to the bottom of the tank.

  • Mechanical Coalescer

Mechanical coalescers extract water/hydrocarbon condensate from emulsions and coalesce them into bigger molecules using a series of baffle walls or coalescing filters. Water separation from liquid hydrocarbons or natural gas is a popular application.

What is a Coalescing filter?

A coalescing filter is a device that separates vapours, liquids, soluble particles, or oil from another fluid using the coalescing action. Because of its increased weight, the coalescence effect occurs when liquid aerosols combine to form a larger whole that is easier to filter out of the system.


The filter is made up of several layers, each of which performs a particular task, such as eliminating solid particles from a gas flow or separating liquid molecules from a gas flow. Coalescing filters are commonly made of borosilicate microfibers and semi-permeable membranes. A coalescing filter for natural gas eliminates water vapour and other impurities to improve product purity.

How does a Coalescing filter work?

The following steps are usually followed when employing a coalescing filter to separate emulsions:


  • The result passes through two or more filter components in the coalescer at various locations.

  • The elements are separated into phases by the coalescing filters, which capture one material while allowing the other to flow through to collecting sites.

  • The fluid passes through and coalesces into larger, heavier particles that are mechanically drained away. The quality of the coalescing media determines the effectiveness of coalescence (and the purity of the resultant fluid).

Product Separation Made Easy & Reliable with IFS

For the oil and gas industry, Integrated Flow Solutions specialises in the design and manufacturing of modular, engineered to order process systems. To meet the most demanding standards for product purity, we provide a variety of modular fluid filtering and fuel gas conditioning systems.


All of the equipment has been performance-engineered and quality-assured to meet international quality and reliability standards. We also have a team of professionals available to provide consulting services to your company.

Our Coalescor You Can Buy


The SIEBEC coalescors are ideal to recover floating oil in a liquid. The system can recover from 1 to 100 liters of oil per day. The pressure technology has a low space floor and is easy to install while the gravitational technology enables the best separation for difficult applications. 

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