A passive cyclone separator to treat a fluid in a microgravity environment to separate a liquid phase of the fluid from a gas phase of the fluid, comprising a tubular body having a longitudinal axis and internally defining a separation chamber within which the gas phase of the fluid is separable, in use, from the liquid phase of the fluid; an inlet opening through which the fluid is injectable, in use, into the separation chamber along an injection axis; a liquid phase outlet opening, through which the liquid phase separated from the gas phase exits, in use, the separation chamber; and a gas phase outlet opening, through which the gas phase separated from the liquid phase exits, in use, the separation chamber; the injection axis is inclined towards the liquid phase outlet opening so as to define a non-zero fluid injection angle with a direction orthogonal to the longitudinal axis.

Provided is a carbon dioxide recovery device including an absorption part that produces a compound of carbon dioxide and an amine contained in an absorbing solution, and a regeneration part that includes an anode that desorbs the carbon dioxide from the compound to produce a complex compound of the amine, and a cathode that is electrically connected to the anode and regenerates the amine from the complex compound.

Provided is a carbon dioxide recovery device including an absorption part that produces a compound of carbon dioxide and an amine contained in an absorbing solution, and a regeneration part that includes an anode that desorbs the carbon dioxide from the compound to produce a complex compound of the amine, and a cathode that is electrically connected to the anode and regenerates the amine from the complex compound.

A method for recovering a distillable, anhydrous methane-sulfonic acid (MSA) liquid phase from an anhydrous 2-phase gas-liquid mixture wherein the anhydrous 2-phase gas-liquid mixture is generated by sulfonating methane (CH.sub.4) with sulfur trioxide (SO.sub.3) in an MSA-forming reactor, or reactor system, according to a radical chain reaction wherein the method comprises (i) separating the gas phase from the liquid phase, (ii) passing the separated liquid phase into a stripping column, and (iii) recovering the stripped anhydrous liquid phase.

A method and apparatus for supplying insulating liquid to form an insulating coating layer on an electrode is disclosed herein. In some embodiments, an apparatus includes a storage tank for storing an insulating liquid; a coating die for coating the insulating liquid on an electrode; a supply line which supplies the insulating liquid from the storage tank to the coating die; a pump connected to the supply line; a defoaming tank connected to the storage tank and supplies defoamed insulating liquid to the storage tank; a vacuum pump which defoams bubbles of the insulating liquid by applying vacuum to the defoaming tank; a bubble sensor connected to the supply line, wherein the bubble sensor senses generation of bubbles in the supply line in real time; and a controller for adjusting an operating condition of the apparatus based on an amount of bubbles sensed by the bubble sensor.

An apparatus and method for flow management and CO.sub.2-recovery from a CO.sub.2 containing hydrocarbon flow stream, such as a post CO.sub.2-stimulation flowback stream. The apparatus including a flow control zone, a gas separation zone, a pretreatment zone, and a CO.sub.2-capture zone. The CO.sub.2-capture zone is in fluid communication with the pretreatment zone to provide CO.sub.2-capture from a pretreated flowback gas stream and output a captured CO.sub.2-flow stream. The CO.sub.2-capture zone includes a first CO.sub.2-enricher and at least one additional CO.sub.2 enricher disposed downstream of the first CO.sub.2 enricher and in cascading relationship to provide a CO.sub.2-rich permeate stream, the CO.sub.2-capture zone further including at least one condenser to condense the enriched CO.sub.2-stream and output the captured CO.sub.2-flow stream.

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 filtering device and a filtering method are provided. The filtering device includes a bubble filtering system. The bubble filtering system at least includes a first bubble filtering system and a second bubble filtering system. The first bubble filtering system configured for performing a first bubble filtration in the solution. The second bubble filtering system configured for performing a second bubble filtration in the solution. Filter fineness of the second bubble filtering system is higher than filter fineness of the first bubble filtering system.

Systems and methods for separation of hydrocarbon containing fluids are provided. More particularly, the disclosure is relevant to separating fluids having a gas phase, a hydrocarbon liquid phase, and an aqueous liquid phase using indirect heating. In general, the system uses a first gas separation followed by pressure reduction and then a second gas separation. Indirect follows the second gas separation and then three-phase separation.

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.