Methods comprising contacting a residue comprising paraffinic, olefinic, and aromatic hydrocarbons with a polar solvent under conditions effective to extract at least a portion of the aromatic hydrocarbons from the residue into the polar solvent, thereby generating: an extract phase comprising the portion of aromatic hydrocarbons and the polar solvent; and, a raffinate phase comprising a majority of the paraffinic and olefinic hydrocarbons.

The present invention refers to a process for the purification of levulinic acid, an aqueous solution comprising levulinic acid and a process for the production of levulinic acid.

A method for cracking crude oil includes delivering the crude oil to a first tube group of a convection section of a cracking furnace for preheating and then performing vaporization to obtain a first gas phase and a first liquid phase; performing high-pressure extraction on the first liquid phase to obtain a non-asphalt oil and an asphalt; and mixing the first gas phase and the non-asphalt oil with water vapor respectively, or mixing the first gas phase with the non-asphalt oil prior to mixing with water vapor, then delivering the same to a second tube group of the convection section of the cracking furnace for heating, followed by delivering same to a radiation section of the cracking furnace for cracking to obtain a cracked product, and separating the cracked product to obtain low-carbon olefins.

Equipment to extract sludge (crud) from the interface (5) that is generated in a mixer-settler (mixer-settler) (1) in a solvent extraction process between an aqueous phase (3) and an organic phase (4) which allows continuous vacuum extraction and storage of said sludge, where the equipment comprises: a sludge collector (2) comprising: a transparent rigid tube (18), a plurality of floats (19) freely mounted along of said tube (18), a tube elbow (20) at a first end of the transparent rigid tube (18), a tube extension (20′), at the other end of the elbow (20), a suction nozzle (23) at the end of the tube extension (20′), an angle change handle (21) near a second end of the transparent rigid tube (18) to rotate the sludge catcher (2) according to the axis longitudinal (18′) of the transparent rigid tube (18), an extraction regulating valve (22) mounted on the gear change handle angle (21) that regulates the suction pressure inside the transparent rigid tube (18); a vacuum tank (6) that receives the sludge from the sludge collector (2); a vacuum system (7) that generates a vacuum inside the vacuum tank (6) to produce suction or vacuum suction in the sludge collector (2); and a pneumatic pump (8) that extracts the sludge from the tank vacuum (6) and transfers them to a plurality of containers (9) for storage; Method to extract lees (crud) from the interface that is generated in a mixer-decanter.

A process for the microfluidic extraction of molecules of interest from a vegetable oil, which utilizes a microfluidic chip with a double-Y-channel circuit, two inlets, two outlets, and a main channel, a first vessel including vegetable oil and a second vessel including ethanol for extraction, a pressure controller for pressurizing the vegetable oil and the ethanol, a first collector for the triglycerides-enriched vegetable oil and a second collector for molecules of interest-enriched ethanol. The extraction process includes: controlling the pressures to subject each of the vegetable oil and the ethanol to a pressure, so the interface between the two fluids is positioned at the junction point of inlets, bringing the vegetable oil and ethanol into contact with each other in the main channel for a time to enable extraction of the molecules of interest, collecting the molecules of interest-enriched ethanol, optionally, evaporating the ethanol, collecting the triglycerides-enriched vegetable oil.

The invention relates to a method of separating a first contaminant from a feed stream further comprising a condensation polymer. The invention further relates to a reactor system for carrying out the method, comprising at least one depolymerization vessel, configured for depolymerizing a condensation polymer into monomer, dimer, trimer and/or oligomer, which depolymerizing occurs in an alcoholic solvent, wherein said condensation polymer is provided as a feed stream further comprising a first contaminant, the reactor system comprising a separation stage, said separation stage comprising a separation vessel, downstream of the depolymerization vessel, configured for collecting a first contaminant, wherein said first contaminant is separated from the alcoholic solvent on the basis of a density separation so that the first contaminant is arranged on top of the alcoholic solvent.

A system for the extraction of essential oils from botanical matter housed within an extraction vessel, the system comprising: a transfer tank storing liquid and gaseous extraction fluid; a charge tank configured for storing liquid and gaseous extraction fluid, the charge tank being in fluid communication with the transfer tank; a transfer tank engagement valve selectively permitting fluid flow between the transfer tank and the charge tank; means for pressurizing the transfer tank; means for cooling the charge tank; wherein pressurizing the transfer tank transfers liquid phase extraction fluid to the charge tank, and cooling the charge tank increases a density of the liquid extraction fluid in the charge tank; wherein a transfer of extraction fluid from the charge tank to the extraction vessel occurs due to a pressure differential between the charge tank and the extraction vessel and without raising the temperature of the charge tank and without using a pump to transfer extraction fluid from the charge tank to the extraction vessel.

The present invention relates to a process for the electro extraction of molecules from a moving fluid donor phase into an acceptor phase, comprising the steps of: providing an electrically conductive donor phase moving at a first flow velocity and in electrically conductive contact with a first electrode, providing an electrically conductive acceptor phase in direct contact and immiscible with the donor phase, in electrically conductive contact with a second electrode; and providing a supporting or confining phase guide pattern to keep a defined interface between donor phase and acceptor phase, and (d) applying an electrical field between the first and the second electrode.

The present invention describes a process for the production of (−)-cannabidiol (CBD) from industrial hemp by means of an extraction followed by two alternative working processes: a process A which provides extraction with solvents first to an alkaline pH and then to acidic pH to isolate the carboxyl form of the CBD which is then subjected to decarboxylation and a process B which provides the elimination of waxes and pitches and then purification by chromatography. At the end of both alternative working processes the CBD is crystallized obtained in high purity crystalline form.

The present invention describes a process for the production of (−)-cannabidiol (CBD) from industrial hemp by means of an extraction followed by two alternative working processes: a process A which provides extraction with solvents first to an alkaline pH and then to acidic pH to isolate the carboxyl form of the CBD which is then subjected to decarboxylation and a process B which provides the elimination of waxes and pitches and then purification by chromatography. At the end of both alternative working processes the CBD is crystallized obtained in high purity crystalline form.