Distillative process for obtaining ditrimethylolpropane from solutions includes separating ditrimethylolpropane from the solution in a first distillation unit into a first tops fraction comprising low-boiling compounds having a lower boiling point than ditrimethylolpropane and a first bottoms fraction; introducing the first bottoms fraction into a second distillation unit having at least 5 theoretical plates, said unit being configured as a thin-film evaporator with a column attachment and drawing off a second tops fraction comprising intermediate-boiling compounds having a lower boiling point than ditrimethylolpropane as well as withdrawing a second bottoms fraction from the second distillation unit and introducing the second bottoms fraction into a third distillation unit having at least 4 theoretical plates, said unit being configured as a thin-film evaporator with a column attachment, such that ditrimethylolpropane is obtained as a third tops fraction and high boilers are removed as a third bottoms fraction.

A process for conversion of a hydro-carbonaceous feed including ionic halides to a hydrocarbon product stream by hydrotreatment, wherein the stream is combined with wash water, the weight ratio between wash water and hydrocarbon product stream water is between 1:10 and 10:1, wherein the combined hydrocarbon product stream and wash water are separated in a non-polar stream of hydrocarbon product and a polar stream of wash water including ionic halides, such that from 50% of the ionic halides are transferred from the hydrocarbon product stream to the polar stream of wash water including ionic halides, wherein the polar stream of wash water is directed to a means of concentrating, to provide a stream of purified water and a stream of brine having a concentration of ionic halides being more than 2 times and less than 100 times above that of the polar stream of waste water including ionic halides.

A wastewater treatment system includes a circulating fluidized bed evaporator defining a longitudinal axis vertical with respect to gravity. The evaporator has a wastewater inlet to provide wastewater to the circulating fluidized bed evaporator. A heat inlet is axially below the wastewater inlet to provide heat to the circulating fluidized bed evaporator for evaporating the wastewater. An outlet is axially above the wastewater inlet and the heat inlet.

The present disclosure relates to isolating one or more cannabinoids from an input mixture. There is disclosed an apparatus that comprises a first reaction vessel, a volatizing unit, and a distillation unit. The first reaction vessel provides a derivatized input mixture that comprises one or more derivatized cannabinoids. The volatizing unit volatilizes the derivatized input mixture into a derivatized cannabinoid-containing vapor-stream and a residue. The distillation unit receives the derivatized cannabinoid-containing vapor stream and separates a first derivatized cannabinoid within the derivatized cannabinoid-containing vapor stream from at least a second cannabinoid. There is also a method that comprises the steps of derivatizing one or more cannabinoids in an input mixture; volatilizing the derivatized input mixture to provided a derivatized cannabinoid-containing vapor stream; conducting the derivatized cannabinoid-containing vapor stream to distillation unit; and collecting a product that comprises the first derivatized cannabinoid.

A method is disclosed for stripping in a stripper a urea synthesis solution received from a urea forming process wherein ammonia and CO2 are reacted under urea forming conditions. The shell space of the stripper comprises a continuous vertical zone.

Falling film evaporator systems, devices, and methods are disclosed in the present application. In some embodiments, the falling film evaporator system can include a hollow cylindrical glass tube configured to enclose the major parts of the falling film evaporator system. Furthermore, in some embodiments, inserted into the cylindrical glass tube is another hollow evaporator tube with a dispensing bowl at the top, a reservoir of the dispending bowl facing the inside top of the cylindrical glass tube. Inserted into the hollow evaporator tube is a heating element configured to heat the hollow evaporator tube such that an outside surface of the evaporator tube is heated. At the top of the hollow cylindrical glass is an inlet where liquid flows into the dispensing bowl, spilling over the edges of the bowl, generating a thin film of liquid that is evaporated as it falls down the outside surface of the evaporator tube.

The process of producing concentrated maple sap can include concentrating the maple sap using membrane filtration to a sugar content of approximately 30° Brix, circulating the maple through a maple sap passage of a membrane, wherein the membrane contains the maple sap in a vacuum cavity, and evaporating the water from the maple sap across the membrane into the cavity. The concentrated maple sap having a sugar content above 50° Brix.

The process of producing concentrated maple sap can include concentrating the maple sap using membrane filtration to a sugar content of approximately 30° Brix, circulating the maple through a maple sap passage of a membrane, wherein the membrane contains the maple sap in a vacuum cavity, and evaporating the water from the maple sap across the membrane into the cavity. The concentrated maple sap having a sugar content above 50° Brix.

A method for cleaning a vaporizer that vaporizes, at normal temperature and pressure, a source material in a liquid state, and supplies the vaporized source material to a reactor through a supply pipe, includes a cleaning step of passing the source material to the vaporizer while maintaining the source material in a liquid state to clean the vaporizer.

A method for cleaning a vaporizer that vaporizes, at normal temperature and pressure, a source material in a liquid state, and supplies the vaporized source material to a reactor through a supply pipe, includes a cleaning step of passing the source material to the vaporizer while maintaining the source material in a liquid state to clean the vaporizer.