The invention is a high-salt waste water air powered low temperature evaporating device and method of use. A tray is mounted on a lifting platform; an air inlet and a water inlet are on the tray. Air distributing pipes are arranged at the center of the nested column tubes (33). A groove (4) is installed at the top of the tray, and mounting points are accompanied by multiple nested column tubes (33). The nested column tubes (33) are connected with the air inlet. An atomizer is arranged inside the air distributing pipes; and the atomizer is connected with the water distributing pipes. Using air power evaporates concentrated waste water multiple times so that the salt in the wastewater reaches saturated concentration, and therefore, the wastewater temperature is reduced, salt is crystallized and separated out, liquid is continuously evaporated, and the wastewater can be completely treated.

A method for the recovery paraxylene with reduced crystallization. Paraxylene is recovered from a mixture of C8 aromatic hydrocarbons in a pressure swing adsorption zone and a crystallization zone. The invention provides for lower throughput through the crystallization zone, resulting in lower capital costs, reduced electricity in operating separation equipment, as well as reduced refrigeration duty.

A method for recovering paraxylene from a mixture of aromatic hydrocarbons. The process uses a pressure swing adsorption zone followed by a paraxylene recovery zone. The invention provides for lower throughput through the paraxylene recovery zone, resulting in lower capital costs and operating costs.

A method for filtering solids from a slurry includes placing a filter assembly into a filtration tank containing the slurry. The filter assembly includes a plurality of filter cells each having a filter medium at an exterior and a cavity at an interior. The solids are filtered by moving the slurry through the filter mediums into the interiors of the filter cells to form a filter cake at the exteriors of the filter cells. The filter assembly is moved while applying a vacuum to the interiors of the filter cells through a vacuum transfer system including a mobile part and a stationary part. The mobile part moves along with the filter assembly and is sealed with respect to the stationary part.

The present invention is directed to a method of producing active pharmaceutical ingredients (APIs). The method includes subjecting a reaction mixture with an API precursor to solvent extraction to produce a reactant stream with the API precursor. The method includes concentrating the API precursor in the reactant stream using at least one membrane. The method includes carrying out a reaction in a membrane reactor. The method includes separating the API precursor from the reaction stream using a separator. The method includes crystallizing the API precursor using a crystallizer to produce APIs.

A method includes supplying a supersaturated brine stream having a plurality of minerals and anti-scalant from a water treatment system to a gypsum removal system disposed within a mineral removal system. The gypsum removal system includes a gypsum reactor that may receive the supersaturated brine, may deactivate the anti-scalant such that gypsum precipitates from the supersaturated brine, and may generate a gypsum slurry having a mixture of desupersaturated brine, precipitated gypsum, and the anti-scalant in solution with the desupersaturated brine. The method also includes supplying gypsum seed crystals to the gypsum reactor. The gypsum seed crystals may precipitate the gypsum from the supersaturated brine to generate the gypsum slurry. The method also includes directing a first portion of the gypsum slurry from the gypsum reactor to a gypsum settler. The gypsum settler may reactivate the anti-scalant such that the anti-scalant absorbs onto the precipitated gypsum to remove the anti-scalant from the desupersaturated brine and may generate anti-scalant-gypsum crystals and a desupersaturated overflow having at least a portion of the plurality of minerals. The method further includes generating the gypsum seed crystals supplied to the gypsum reactor using the anti-scalant-gypsum crystals.

Disclosed herein are plinabulin polymorphs, compositions, their use and preparation as therapeutic agents. In particular, some embodiments relate to plinabulin monohydrate in a crystalline form.

A method of forming lithium carbonate from a lithium-bearing solution including:

evaporating the lithium-bearing solution to precipitate a first group of impurities;
removing the first group of impurities to form a first purified solution; and
performing a flash crystallisation step within a predetermined temperature range to crystallise a second group of impurities from the first purified solution;
removing the second group of impurities from the first solution to form a second purified solution, wherein at least 90 wt % of lithium is recovered from the first purified solution; and
reacting the second purified solution with a metal carbonate to form lithium carbonate of at least 90 wt % purity.

The present invention relates to the production of lithium from liquid resources such as natural and synthetic brines, leachate solutions from clays and minerals, and recycled products.

Disclosed is an external circulating slurry reactive crystallizer, including a riser, a degassing zone and a downcomer. A lower end of the riser is communicated with a gas inlet pipe, a liquid inlet pipe and a solid feeding pipe, while an upper end of the riser is communicated with a lower end of the degassing zone. An upper end of the downcomer is integrally fixed to a sidewall of the degassing zone. At least one hydrocyclone is arranged at a lower end of the downcomer. The hydrocyclone is provided with an overflow port at an upper end thereof and an underflow port and a valve at a lower end thereof. The overflow port is communicated with the riser. The crystallizer can simultaneously realize reaction, crystallization and separation for continuous production with low cost, regulating and controlling the particle size distribution and morphology of crystals.