What are the working principles of fuel water separators?

The working principle of fuel water separators is mainly based on physical principles, usually separating oil and water according to their different densities. After the oily wastewater enters the separator, due to the lower density of oil compared to water, the oil will float on the water surface while the water sinks, thus achieving oil-water separation. In addition, oil-water separators can also use coalescence materials to aggregate small oil droplets into larger ones, making separation easier; Use a fine filter to intercept oil droplets and allow water to pass through; Separate oil and water using centrifugal force; Using adsorption materials to adsorb oil droplets and other methods. ‌

The working principle of different types of fuel water separators:

Automobile oil-water separator: Compressed air flows into the spiral pipeline through the side air inlet. Inside the oil-water separator, compressed air flows in a downward spiral space, and under the action of centrifugal force, the oil-water mixture and impurities are left on the guide plate. After flowing to the bottom of the spiral track, the compressed air will flow out through a vertical upward channel and the top outlet. At the same time, the oil-water mixture and impurities condensed on the guide plate will flow into the bottom collector along the downward spiral tube under the action of gravity.

Small scale oil-water separator for catering: After passing through the diffusion nozzle, large oil droplets float on the top of the oil collection chamber, and the sewage containing small oil droplets enters the lower part of the corrugated plate coalescer, where the aggregated oil droplets form larger oil droplets and enter the oil collection chamber. Wastewater containing smaller oil droplets is filtered through a fine filter to remove impurities from the water, and then sequentially enters a fiber aggregator to aggregate the small oil droplets into larger ones and separate them from the water.

Compressed air oil-water separator: utilizing the organic combination of cyclone and stainless steel wire mesh to capture mist, and employing mechanisms such as direct interception, inertial collision, Brownian diffusion, and condensation, it can effectively remove dust, water, and oil mist from compressed air. Large droplets fall to the bottom of the separator under the action of gravity, while misty small droplets are captured and condensed by the wire mesh into large droplets that fall to the bottom of the separator.

Application areas of fuel water separators:

• Industrial field: used for treating oily wastewater discharged.
• Catering industry: used for treating catering wastewater.
• The automotive industry: the first line of defense to ensure clean compressed air for braking systems.
• Shipbuilding industry: used to treat oily wastewater generated by ships.