摘要:
The present invention generally relates to systems and methods for pressure driven flow crystallization. In some embodiments, the system comprises a comprising a cavity and a mixing mechanism. In some embodiments, one or more inlets facilitate the transfer of one or more reagent streams to the cavity. In some such embodiments, the mixing mechanism mixes the first and second reagent streams such that a continuous crystallization and/or generation of a product (e.g., solid particles) in the fluid.
摘要:
A dynamic process for purifying dicyclopentadiene from a mixed liquid hydrocarbon stream comprising dicyclopentadiene and one or more of a C 5 paraffin, a C 5 olefin, co-dimers, cyclopentadiene, benzene, vinyl norbornene, bicyclononadiene, propenyl noibornene, isopropenyl norbornene, methylbicyclononadiene, methyldicyclopentadiene, and various minor organic impurities is introduced, wherein the dicyclopentadiene is separated from the mixed liquid hydrocarbon stream by melt crystallizing sweating and collecting dicyclopentadiene.
摘要:
A solvent recovery method and system. Contaminated solvent is alkalized to provide an alkalized contaminated solvent. Crystals including a component of the contaminant are formed from the alkalized contaminated solvent, resulting in purified solvent. The purified solvent is filtered through the crystals, resulting in filtered solvent. The system includes a vessel with heat exchangers and other features for localizing crystal formation and filtering the purified solvent through the crystals.
摘要:
An equipment assembly for preparing, harvesting and collecting particles is disclosed. The assembly comprises a tandem filter system with one or more high pressure filters, one or more low pressure filters and one or more collection vessel. Particles can be prepared, harvested and collected continuously, semi-continuously or in a batch-type operation. A tandem filter system and its method of use are also disclosed. Particles made with the assembly and according the instant methods are also disclosed. The assembly provides improved particle harvesting and collection over other systems and permits continuous particle formation, in particular by dispersion of a solute-containing process fluid within a supercritical anti-solvent.
摘要:
A process for increasing the purity of organic compounds is described, wherein the organic compound is crystallized from a stable emulsion comprising water, hydrocarbon and a surfactant. Preferably the emulsion consists of water, n-heptane and sodium bis(2- ethylhexyl)sulfosuccinate.
摘要:
The invention is directed to a process for the recovery or removal of one or more crystallizable compounds from an aqueous solution containing, apart from the said crystallizable compounds, one or more organic or inorganic scale- forming or scale-inducing materials having a lower solubility in water than the said crystallizable compounds, said process comprising subjecting the said solution to at least one eutectic freeze crystallization step with recovery of ice and said one or more crystallizable compounds in crystalline form, recycling at least part of the mother liquor formed in the said eutectic crystallization step and subjecting the said recycle to a treatment with seed crystals for said scale forming or scale inducing compounds, removing at least part of the solid material obtained in said treatment step and recycle of the aqueous liquid thus obtained to the eutectic freeze crystallization step or to the feed thereto.
摘要:
Es wird ein Verfahren zur Herstellung kristalliner Wirkstoffpartikel bereitgestellt, bei dem Wirkstoff aus einer übersättigten Lösung an der Oberfläche von Partikeln des Wirkstoffs kristallisiert, wobei in einem ersten Modul eine Suspension von Wirkstoffpartikeln in einer übersättigten Lösung des Wirkstoffs einem Naßmahlen unterworfen wird, zumindest ein Teil der Suspension von Wirkstoffpartikeln in einem zweiten Modul gekühlt und gleichzeitig mit Ultraschall beaufschlagt wird, das zweite Modul mit Wirkstoffpartikelsuspension aus dem ersten Modul gespeist und die Wirkstoffpartikelsuspension nach dem Kühlen und Beaufschlagen mit Ultraschall in das erste Modul zurückgeführt wird, wobei der Suspension Wirkstofflösung und gegebenenfalls Antilösungsmittel zugeführt und Wirkstoffpartikel sowie flüssige Phase entnommen werden, wobei die relative Übersättigung des Wirkstoffs in der flüssigen Phase der Suspension, bezogen auf die gesamte flüssige Phase ≤ 90 % ist und die entnommenen Wirkstoffpartikel eine mittlere Partikelgröße d 50 von 10 - 500 µm aufweisen.