A process and system to control the final product quality in a system for separating olefins and paraffins in a membrane system. A small finishing membrane stage is added to an existing membrane system that takes a slip stream from the product, purifies it to a very high concentration of propylene and blends it back into the product stream.

The present application provides a method for extracting an extractable component from a feed liquid using a porous membrane. One embodiment of the method includes temperature-swing solvent extraction of water from saline water using a porous membrane.

A flue gas extraction system provides extraction, collection, cooling, enriching and distributing flue gas from a vent stack of a stationary flue gas generator to carbon dioxide consuming crops, orchards, and other photosynthetic organisms. The collected flue gas is processed through the system to achieve optimal temperature, pressure, flowrate, water content and carbon dioxide concentration for application to plants for increasing plant productivity and sequestering the carbon dioxide. The gas distribution network may have one or more membrane modules which receive a low pressure gas mixture, where the membrane modules are utilized to enrich the CO2 concentration and to separate out a nitrogen rich component from the flue gas. Application of carbon dioxide may be supplemented by providing additional components to the plants which maintain a level of fertilization and irrigation suitable for the increased biomass and water utilization efficiency of the plants resulting from the increased intake of carbon dioxide.

Method for treating impurities contained in exhaust gases of ships to reduce sulphur oxide and other emissions. In order for the method to purify wash water exiting from an exhaust gas scrubber sufficiently enough to be directly dischargeable to sea, and in order for a purification unit used to be small enough to be easily placed onboard a ship, exhaust gases are scrubbed in the exhaust gas scrubber and wash water containing impurities and exiting from the scrubber is supplied to the purification unit, circulated in an effluent circuit, and filtered through a semipermeable membrane of a filter to obtain purified effluent and a residue containing impurities, when necessary, the pH value of the purified effluent is adjusted to be at least 6.5, after which it is discharged into the sea or recycled to the scrubber while the residue containing impurities is led back to the effluent circuit.

Method for treating impurities contained in exhaust gases of ships to reduce sulphur oxide and other emissions. In order for the method to purify wash water exiting from an exhaust gas scrubber sufficiently enough to be directly dischargeable to sea, and in order for a purification unit used to be small enough to be easily placed onboard a ship, exhaust gases are scrubbed in the exhaust gas scrubber and wash water containing impurities and exiting from the scrubber is supplied to the purification unit, circulated in an effluent circuit, and filtered through a semipermeable membrane of a filter to obtain purified effluent and a residue containing impurities, when necessary, the pH value of the purified effluent is adjusted to be at least 6.5, after which it is discharged into the sea or recycled to the scrubber while the residue containing impurities is led back to the effluent circuit.

An embodiment of this disclosure provides a liquid treatment device, including: a housing 10 having a housing body 16 and a cover body 11, wherein the housing body 16 is open at one end in a length direction and is close at the other end, the cover body 11 is matched with the one end of the housing body 16 for sealing the one end, and the cover body 11 is provided with an inlet 13 for a liquid to flow into the cover body 11; a reverse osmosis membrane unit 20 located in an accommodation space enclosed by the housing body 16 and the cover body 11, the reverse osmosis membrane unit 20 including a reverse osmosis membrane 24 for performing reverse osmosis treatment on the liquid, a collector tube 27 collects a purified liquid obtained by the reverse osmosis treatment, and a support rod 22 supporting the reverse osmosis membrane 24, wherein the reverse osmosis membrane 24 includes a liquid inlet 21 at one end in the length direction; and a filter 30 arranged in the cover body 11 and located between the liquid inlet 21 and the inlet 13 and is used to filter the liquid entering the cover body 11 via the inlet 13, the filtered liquid entering the reverse osmosis membrane 24 via the liquid inlet. According to this disclosure, by providing the filter in the space between the cover body of the liquid treatment device and the support rod, the liquid entering the reverse osmosis membrane may be preprocessed, spaces may be saved, installation is convenient, and cost is relatively low.

A method for producing products, advantageously solvents, is by fermentation, advantageously multi-stage fermentation. The fermentation is complemented with pervaporation as in situ product recovery technology, combined with a multistage condensation of the permeate. The condensates are separately introduced in the downstream processing to recover the produced products, advantageously solvents. The method for producing products, advantageously solvents, by fermentation is simplified and has an overall improved energy efficiency. A related system uses method for producing products, advantageously solvents, is by fermentation.

A method for producing products, advantageously solvents, is by fermentation, advantageously multi-stage fermentation. The fermentation is complemented with pervaporation as in situ product recovery technology, combined with a multistage condensation of the permeate. The condensates are separately introduced in the downstream processing to recover the produced products, advantageously solvents. The method for producing products, advantageously solvents, by fermentation is simplified and has an overall improved energy efficiency. A related system uses method for producing products, advantageously solvents, is by fermentation.

A method for highly concentrating aqueous solutions containing thermally sensitive organic constituents and with or without mineral constituents, wherein firstly, a major portion of the water is extracted by membrane filtration from the solution for pre-concentration and is discharged from the process and the solution which is pre-concentrated is then subjected to a freeze concentration procedure, in which, in the form of separated ice crystallisate, further water is extracted from the solution. To promote results, that concentration may be effected in the freeze concentration procedure until a viscosity of the mother solution of at least 0.0002 m.sup.2/s is achieved, and in that the separated ice crystallisate from the freeze concentration with the mother solution adhering thereto as a suspension is returned to the membrane filtration upstream of the membrane filtration or after melting of the ice crystallisate.

The disclosure relates to a Cannabis seed processing method and system comprising ultrasonic treatment of Cannabis seeds coupled to a membrane extraction system for efficient recovery of hemp seed oil.