A coalescer is installable on a flow path for a target liquid to be treated containing oil droplets. The coalescer includes sheets of metal mesh with, for example, a plain weave, twill weave, or thick weave stacked on one another to form mesh layers and interlayer portions between the layers. The metal mesh has a surface extending along a flow of the target liquid. Oil droplets come into contact with either or both of warp wires and weft wires to form an oil film that moves downstream with the target liquid flow. The oil film grows into larger droplet particles at downstream ends of the mesh layers. The larger droplet particles leave the coalescer with the flow of the target liquid.

The present invention relates to a system for the separation of oil/water emulsions by electrocoalescence having a fluid conduction means or tubing, at least one cathode, at least one electrode, at least one anode, at least one power source and at least one spark gap for a cathode and a spark gap for the anode. Furthermore, the present invention also relates to a method for the separation of oil/water emulsions by electrocoalescence carried out by a system according to the invention.

A water separating screen for a filter element in a liquid filter, the water separating screen including: a screen fabric having end faces; and a fabric carrier; a screen fabric arranged on the fabric carrier and encircling a longitudinal axis, the screen fabric having axial end faces, the longitudinal axis defining an axial direction; wherein the fabric carrier in an area between the end faces exclusively has longitudinal struts, which at least substantially extend in the direction of the longitudinal axis and which are elastic in a radial direction.

A system for separating a multiphase well stream into a solids fraction, a water fraction, an oil fraction and a gas fraction includes a transportable support surface; a solids separator which is mounted on the support surface and is configured to receive the multiphase well stream and separate the well stream into a first heavy fraction primarily comprising the solids fraction and a first light fraction primarily comprising the gas, oil and water fractions; and a multiphase fluid separator which is mounted on the support surface and includes a first separator section and a second separator section which is positioned vertically below and connected directly to the first separator section. The first separator section is configured to receive the first light fraction and separate the first light fraction into a second light fraction primarily comprising the gas fraction and a second heavy fraction primarily comprising the oil and water fractions. The second separator section is configured to receive the second heavy fraction and separate the second heavy fraction into a third light fraction primarily comprising the oil fraction and a third heavy fraction primarily comprising the oil fraction.

A subsea production unit for subsea treatment of oil has a frame that supports an onboard multiphase separation system for separating gas and water from a wellstream containing oil. The subsea production unit also includes an onboard water treatment system for cleaning oil from water that is produced by the separation system.

A coalescence method and related system are disclosed herein. A multiphase dispersion feed comprising first and second liquids (i.e. where droplets of the first liquid (dispersed phase) are dispersed in the second liquid (continuous phase)) is passed through a static mechanical droplet-coalescer comprising a channel characterized by a plurality of in-series segments, each segment characterized by a segment-specific-characteristic obstacle size and having geometric features disclosed herein. In embodiments of the invention, the static mechanical droplet-coalescer promotes coalescence between droplets of first liquid to form larger droplets of first liquid. Subsequently, after the dispersion exits the coalescer, the larger droplets are easier to remove from the second liquid (continuous phase) than the smaller droplets that coalesced into the larger droplets.

This disclosure relates to new filtration systems, granular substrates, granular media and processes that are highly effective for removing suspended oil, particulates and oily particulates from an oil-water mixture. The new filtration media comprises a microporous granular substrate having a combination of specified micro-porosity, hardness and additional characteristics, the substrate being modified by an infused or coated absorption composition. This resulting filtration media displays excellent filtration performance, including outstanding durability and robustness to sustain its excellent performance over a large number of backwash cycles.

A fuel-water separator includes a cartridge assembly and a bowl. The cartridge assembly receives a fuel-water mixture and provides a fuel. The cartridge assembly includes an endplate. The bowl is configured to store water separated from the fuel-water mixture. The bowl is coupled to the endplate. The endplate includes an air vent that receives air from the bowl. The air vent establishes a pressure equilibrium within the bowl and the cartridge assembly.

The invention relates to a retaining apparatus (1) having a filter element (3) in a fluid line (2) which can be flowed through in a flow direction (V) by a fluid (F) comprising a foreign fluid (X), having a volume flow control apparatus (5) by way of which the volume flow (S) through the fluid line (2) can be controlled, having a sensor device (6) by way of which the fraction of foreign fluid (X) in the fluid (F) can be determined, and having a control device (7) by way of which the volume flow (S) can be controlled by way of the volume flow control apparatus (5) in a manner dependent on the fraction of foreign fluid (X) in the fluid (F) as determined by way of the sensor device (6). The invention furthermore relates to a fuel tank filling installation having said retaining apparatus, and to a method for retaining foreign fluid from a fluid.

Provided is a liquid processing apparatus and a liquid processing method for reducing a waste amount of a high specific gravity liquid. The liquid processing apparatus includes: a supply pump; a bubble tank including an inflow port, an overflow port, and a return port; a microbubble generator disposed outside the bubble tank; a recovery tank having a recovery port to recover the processing liquid overflown from a first liquid level to the tank; a separation tank including a settling tank connected to the overflow port, and a floating tank connected to the settling tank at a lower portion, and an ejector having a inlet port connected to the supply pump, a suction port connected the suction body, and a discharge port connected to the return port.