摘要:
Conversion of heavy fossil hydrocarbons (HFH) to a variety of value-added chemicals and/or fuels can be enhanced using microwave (MW) and/or radio-frequency (RE) energy. Variations of reactants, process parameters, and reactor design can significantly influence the relative distribution of chemicals and fuels generated as the product. In one example, a system for flash microwave conversion of HFH includes a source concentrating microwave or RF energy in a reaction zone having a pressure greater than 0.9 atm, a continuous feed having HFH and a process gas passing through the reaction zone, a HFH-to-liquids catalyst contacting the HFH in at least the reaction zone, and dielectric discharges within the reaction zone. The HFH and the catalyst have a residence time in the reaction zone of less than 30 seconds. In some instances, a plasma can form in or near the reaction zone.
摘要:
A plasma reactor consisting of a plurality of elements placed between two or more plasma generating electrodes is presented. Said elements consisting of surfaces, conducting, and/or dielectric which allow for the dielectric isolation of the electrodes from each other and creating a plurality of dielectrically isolated spaces for plasma generation. This plasma reactor achieves a high surface area, with low capacitance allowing simplified construction and is suitable for high frequency operation.
摘要:
The present invention relates to a process for an epimerization of a saccharide in a microdevice consisting of a network of micron-sized channels in presence of molybdenum containing catalyst. It further relates to the use of a microdevice consisting of a network of micron-sized channels for the epimerization reaction of saccharides and the oligomerisation of the thus obtained epimerized saccharide, preferably into manno-oligosaccharides.
摘要:
The disclosed invention relates to a process for converting a reactant composition comprising H2 and CO to a product comprising at least one aliphatic hydrocarbon having at least about 5 carbon atoms, the process comprising: flowing the reactant composition through a microchannel reactor in contact with a Fischer-Tropsch catalyst to convert the reactant composition to the product, the microchannel reactor comprising a plurality of process microchannels containing the catalyst; transferring heat from the process microchannels to a heat exchanger; and removing the product from the microchannel reactor; the process producing at least about 0.5 gram of aliphatic hydrocarbon having at least about 5 carbon atoms per gram of catalyst per hour; the selectivity to methane in the product being less than about 25%. The disclosed invention also relates to a supported catalyst comprising Co, and a microchannel reactor comprising at least one process microchannel and at least one adjacent heat exchange zone.
摘要:
The invention relates to a method for upgrading heavy liquid fractions resulting from oil refining, by combustion in a fluidized-bed chemical looping process. The method according to the invention allows to produce energy by oxidizing totally the heavy liquid feeds while allowing direct capture of the CO2 emitted in the combustion fumes. The method according to the invention also allows a synthesis gas to be produced.
摘要:
There is provided a method of producing a microfluidic device including a substrate having a depressed portion and a cover member, whereby to reduce the dispersion of a geometric individual difference and the possibility that a non-joint area can occur in a joint portion between the substrate and the cover member. At the time of producing the microfluidic device, the depressed portion serving as a channel, a chamber and a reservoir is formed in advance in the substrate and a liquid-state energy ray curable resin is applied to the surface of the substrate in which the depressed portion is formed. The energy ray curable resin is cured by an energy ray irradiation unit and caused to serve as the cover on the depressed portion of the substrate, thereby to form the channel, chamber and reservoir.
摘要:
Macro- and microfluidic devices and related technologies, and chemical processes using such devices. More specifically, the devices may be used for a fully automated synthesis of radioactive compounds for imaging, such as by positron emission tomography (PET), in an efficient, compact and safe to the operator manner. In particular, embodiments of the present invention relate to an automated, multi-run, microfluidic instrument for the multi-step synthesis of radiopharmaceuticals, such as PET probes, comprising a remote shielded mini-cell containing radiation-handing components.
摘要:
A microfluidic reactor cartridge having glass capillary tubing wound in a coil and surrounded by a ceramic housing capable use in high temperatures and method for using same. In another embodiment, the microfluidic cartridge is a serpentine reactor cartridge with a serpentine microreactor channel formed in a ceramic housing. The serpentine reactor cartridge has an inlet tube attached to its inlet port and an outlet tube attached to its outlet port. The inlet port is a macro/micro interface and the outlet port is a micro/macro interface useful in gas phase reactions where solids must be used to produce a reactant. The method for using a microfluidic reactor cartridge includes two phases, the first phase for producing a radioactive labeled gas such as methyl iodide and the second phase is a methylation reaction.
摘要:
The disclosed invention relates to a process for converting a reactant composition comprising H2 and CO to a product comprising at least one aliphatic hydrocarbon having at least about 5 carbon atoms, the process comprising: flowing the reactant composition through a microchannel reactor in contact with a Fischer-Tropsch catalyst to convert the reactant composition to the product, the microchannel reactor comprising a plurality of process microchannels containing the catalyst; transferring heat from the process microchannels to a heat exchanger; and removing the product from the microchannel reactor; the process producing at least about 0.5 gram of aliphatic hydrocarbon having at least about 5 carbon atoms per gram of catalyst per hour; the selectivity to methane in the product being less than about 25%. The disclosed invention also relates to a supported catalyst comprising Co, and a microchannel reactor comprising at least one process microchannel and at least one adjacent heat exchange zone.
摘要:
Embodiments of a microchannel reactor comprise a microchannel housing comprising a plurality of channels and an upper microstructure disposed above the microchannel housing. The upper microstructure comprising a gas feed circuit, a liquid feed circuit, and at least one mixing cavity. The mixing cavity is in fluid communication with at least one reactive passage of the microchannel housing. The gas feed circuit comprises at least one gas feed inlet, and the liquid feed circuit comprises at least one liquid feed inlet and at least one liquid reservoir adjacent to the mixing cavity, wherein the liquid reservoir is operable to deliver a liquid feed into the mixing cavity.