A method for treating waste water from various sources, removing solids and pollutants and then either evaporating or recycling the treated water. Waste water is received at the treatment site where the solids are removed before entering the system for treatment. The treatment consists of injecting the pressurized waste water into the exhaust stream of a turbine which is at least 900 degrees Fahrenheit, capturing it in pipes to keep it at above 600 degrees Fahrenheit for at sufficient time, temperature and turbulence to dispose of any volatile organic compounds. The system continues to either immediate atmospheric venting of the remaining treated water or in collecting ponds or tanks for evaporation. If the water is to be recovered it is cooled, condensed and sparged to release exhaust gases and the exhausted and condensed water is recovered.

A system for generating a concentrated product from a feedstock includes a feedstock chamber to which the feedstock is provided, a heat exchanger assembly in thermal communication with the feedstock chamber, the heat exchanger assembly being configured to freeze the feedstock in the feedstock chamber, an output flow arrangement configured to carry liquid from the feedstock chamber as the feedstock thaws, the output flow arrangement comprising a flow controller, a sensor disposed along the output flow arrangement or the heat exchanger assembly, the sensor being configured to measure a characteristic of the liquid, the characteristic being indicative of a solute concentration level of the liquid or the heat exchanger assembly, and a processor responsive to the characteristic and configured to control the flow controller to, based on the solute concentration level, direct the liquid passing through the output flow arrangement to define a plurality of products at different concentration levels, the plurality of products comprising the concentrated product.

We provide an evaporation based method for water recovery from gasification wastewater to achieve zero liquid discharge. Grey water from a gasification system is processed by an evaporation system which recovers >99% of the influent water and generates a solid phase in a crystallizing reactor. The crystallizing reactor converts dissolved solids present as highly soluble species into alternative chemical forms that are amenable to precipitation and removal from the liquid phase to achieve zero liquid discharge.

The present application relates to a bisphenol A preparation apparatus and preparation method, and provides a bisphenol A preparation apparatus and preparation method, which can increase the overall energy efficiency of a process by using an internal heating source.

A processing unit for a liquid washing medium contaminated with sulphur oxides and/or nitrogen oxides, has an evaporation stage for concentrating the active components of the washing medium by an evaporator and/or by a heat exchanger, and has a collecting tank connected to the evaporator and/or to the heat exchanger. The collecting tank is configured as a crystallizer for removing sulfur oxides from the washing medium by crystallization of a sulphate, in particular of potassium sulphate. A separating device for carbon dioxide has a corresponding processing unit, and a method for processing a washing medium contaminated with sulphur oxides and/or nitrogen oxides uses a corresponding processing unit.

A method for purifying crystals in a glass or metal container. A hydrocarbon is introduced into feed material containing tetrahydrocannabinol (THC). The feed material and hydrocarbon is placed in a glass or metal container. The hydrocarbon is then removed within a few minutes after introduction, leaving at least some hydrocarbon in the feed material. Pressure is allowed to build within the container in an oven or in a jacketed vessel for 2-3 weeks. During this time, THC acid crystals precipitate out and fall to the bottom of the container. The contents of the container are poured into a Buchner funnel and a vacuum is applied thereto in order to pull terpenes into a beaker. The terpenes are placed into an oven in order to purge off any remaining solvent. The funnel is then scraped to acquire THC acid crystals.

A Reflux Rinsing method for purifying crystals using solvent vapor through dynamic equilibrium recrystallization. Feed material having tetrahydrocannabinol (THC) is inserted into a reaction vessel having walls, and upper portion, and a lower portion with a bottom surface. The feed material is exposed to a hydrocarbon liquid in the reaction vessel in a quantity sufficient to keep liquid present in equilibrium with gas in the reaction vessel through the recrystallization process, forming a raw extract having THC. The walls and bottom surface of the reaction vessel are coated with raw extract. The reaction vessel is heated and then the heating is discontinued. Vapor/thin-film DER is promoted in the reaction vessel for a predetermined length of time with no solvent reflux, resulting in formation of purified crystals of THC acid under pressure. The hydrocarbon solvent is reclaimed from the reaction vessel, leaving the purified crystals and impurities. When the reaction vessel is opened, the purified crystals and impurities are removed.

A resin containing a desirable compound is extracted from plant material and dissolved in a volatile non-polar solvent. The solvent is evaporated, cooling the solution and increasing the saturation level of the compound in the solution. A second volatile non-polar solvent, in which the compound is less soluble, is then added to the solution and evaporated. This again cools the solution and increases the saturation level until the compound has started to crystallize. The crystals are then filtered and rinsed. Crystallization is more rapid compared to traditional techniques. The resin is obtained from the plant material using an extraction solvent to form a solution, which is then floated above an immiscible liquid, where it is drawn off through a screen and the extraction solvent evaporated.

A Reflux Rinsing apparatus for purifying crystals using solvent vapor through dynamic equilibrium recrystallization. A pressure vessel contains a liquefied gas solvent, impure crystalline starting material initially, and a purified crystalline mass at the conclusion of the purifying process. A mechanism is provided for providing pressure to contents of the pressure vessel and for heating the lower portion thereof. A timer is also connected to the mechanism, the timer being set to heat the pressure vessel to drive vapors and reflux rinsing to remove impurities at the surface of an impure crystalline mass, to reclaim the solvent, leaving purified crystals and impurities in the pressure vessel, and to open the pressure vessel to remove the purified crystals from the vessel walls and bottom surface and to remove the impurities from the vessel. The angle of a crystal bed in the apparatus can be adjusted.

The present invention relates to a method for the purification of natural vanillin, comprising a step involving the stripping of a liquid flow F2 containing natural vanillin. The invention also relates to the natural vanillin that can be obtained using the method of the invention, as well as a device for purifying natural vanillin.