A series of vertically oriented filters of decreasing pore size is sealed from the atmosphere. Pressurized gas is used to force the liquid to be filtered through the filters. The filter stages are thermally insulated from ambient temperatures in order to maintain the liquid passing through at a reduced temperature. Each filter stage has a removable lid, which provides convenient access for replacing the filter cartridge, allowing it to be changed without disturbing the thermally insulated sidewalls of the filter stage.

A process and an apparatus for the purification of a crude acrylic acid composition containing maleic anhydride as an impurity comprising the following steps: (a) carrying out at least one dynamic melt crystallization stage (14, 14a, 14b, 14c, 14d) with the crude acrylic acid composition to prepare a first purified acrylic acid composition and a first residue containing at least 3.5% by weight maleic anhydride, (b) adding a solvent (26) which is capable of dissolving maleic anhydride to the first residue in an amount that the weight ratio of the solvent to the maleic anhydride is 0.3 or more to prepare a ratio-adjusted residue and (c) carrying out at least one further dynamic melt crystallization stage and/or at least one static melt crystallization stage (18, 18a, 18b) with the ratio-adjusted residue to prepare a second purified acrylic acid composition and a second residue.

The present invention refers to an apparatus and method of collecting moisture and/or trichomes from fresh tea leaves or other fresh produces in general. It is a technique in tea manufacturing technology field, for assembling the ingredients rich of nutrient but ignored as waste, eliminating dust and enhancing the quality of finished product. A hood, a fluid container, and a pipe with proper length and shape work as a housing for trichome(s) and moisture to be either not filtered or filtered, chilled, condensed, and collected. An air pressure gradient is generated by an air suction/blowing device inscribed into a general tubular-shaped housing to inhale moisture and trichomes through the hood. If desired, one or more filters with suitable mesh size(s) can be installed at suitable location(s) along the housing for preventing clotting and collecting trichomes. A chilling device is installed in a suitable location in the housing for condensing moisture into fluid to be collected by a fluid container.

A system for debinding a green body in the form of an orthodontic appliance may include a pressure vessel configured to contain a supercritical fluid. A source of a fluid chemical may be coupled to the pressure vessel to supply the fluid chemical to the pressure vessel. A heat source may be configured to heat the fluid chemical. A pump may pressurize the fluid chemical to at least the supercritical pressure. A collection vessel is coupled to the pressure vessel to capture the binder removed from the green bodies as at least the pressure of the supercritical fluid is reduced. A method of manufacturing an orthodontic appliance includes exposing green bodies including particles and a binder to a supercritical fluid to remove at least some of the binder from the green bodies, and collecting the removed binder from the supercritical fluid as the supercritical fluid transitions to a non-supercritical fluid.

A system for debinding a green body in the form of an orthodontic appliance may include a pressure vessel configured to contain a supercritical fluid. A source of a fluid chemical may be coupled to the pressure vessel to supply the fluid chemical to the pressure vessel. A heat source may be configured to heat the fluid chemical. A pump may pressurize the fluid chemical to at least the supercritical pressure. A collection vessel is coupled to the pressure vessel to capture the binder removed from the green bodies as at least the pressure of the supercritical fluid is reduced. A method of manufacturing an orthodontic appliance includes exposing green bodies including particles and a binder to a supercritical fluid to remove at least some of the binder from the green bodies, and collecting the removed binder from the supercritical fluid as the supercritical fluid transitions to a non-supercritical fluid.

A methodology for cleaning and upgrading any kind of tires (cars, motorcycles, trucks, etc.), any kind of waste lubricants (internal combustion engines, industrial parts), any kind of oils as well as plant and animal fats by means of removal of the inorganic elements (potassium, sodium, chlorine, sulfur, phosphorus and heavy metals such as Pb, Cu, Cd, Zn, Hg, Mn, etc.) and the simultaneous addition of new such as calcium, magnesium and ammonium, in order to produce a clean and upgraded rubber material, lubricant as well as fat/oil, which can be used as raw material in thermochemical conversion processes such as flash (t<1 sec)/fast pyrolysis.

An apparatus for extracting an oil from plant material includes an extraction chamber for plant material. The plant material is exposed to a heated gas stream with a temperature sufficient to volatilize on oil from the plant material. The gas stream is rapidly cooled to liquefy the oil into entrained droplets. The oil is collected with a collection solvent.

Systems and processes for hydrotreating, splitting, and extracting a gasoil feed to produce a saturate-rich feedstock for olefin pyrolysis are provided. A gasoil feed is provided to a hydrotreating section to produce an ultralow sulfur distillate (ULSD) stream. The ULSD stream is provided to a splitter section to produce a light distillate stream and a heavy bottom stream. The light distillate stream is provided to an extraction section to produce an aromatic-rich extract phase and a saturate-rich raffinate phase. The raffinate phase is mixed with the heavy bottom stream to produce an olefin pyrolysis feedstock having a reduced BMCI as compared to the gasoil feed stream and the ULSD stream.

The disclosure relates to a method for extraction of plant essential oils from plant material using a water/water miscible extraction solvent or a water/hydrophobic extraction medium/water mixture as an extraction mixture.

Embodiments may also include a system for reducing a solvent concentration in a plurality of microparticles. The system may include a solvent extraction tank. In the solvent extraction tank, a mixture including the plurality of microparticles and the solvent may be contacted with water to form an aqueous suspension. A first portion of the solvent may dissolve into the water of the aqueous suspension to reduce the solvent concentration in the plurality of microparticles. The system may also include a concentration unit in fluid communication with the solvent extraction tank. The concentration unit may further reduce the solvent concentration in the plurality of microparticles. A microparticle concentrate may be formed. The system may further include a washing unit. In the washing unit, the microparticle concentrate may be contacted with a washing solution and may form an amalgam of washed particles.