摘要:
A process is provided for the production of xylenes from reformate. The process is carried out by methylating under conditions effective for the methylation, the benzene/toluene present in the reformate outside the reforming loop, to produce a resulting product having a higher xylenes content than the reformate. Greater than equilibrium amounts of para-xylene can be produced by the process.
摘要:
A system and process for producing xylene and other alkylated aromatics includes one or more fluidized bed reaction zones that provide contact between the reactants (i.e., an aromatic reactant and an alkylating reagent). Improved conversion and selectivity is realized when the alkylating reagent is stagewise injected into the fluidized bed at one or more locations downstream from the location of aromatic reactant introduction into the fluidized bed. Preferably, the alkylating reagent is introduced at a plurality of locations along the axial direction of the fluidized bed reaction zone, or at plural locations between a plurality of different fluidized bed reaction zones.
摘要:
A multi-bed process of removing sulfur oxides and/or other combustible sulfur-containing compounds from a gas stream including combusting the other combustible sulfur-compounds when present in the gas stream with air or oxygen to convert such sulfur-containing compounds to sulfur oxide and form a sulfur oxide enriched gas stream. The sulfur oxide enriched gas stream is contacted with first and second serially connected solid adsorbent beds for adsorbing the sulfur oxides in the form of inorganic sulfates and/or sulfur oxides. A third adsorbent bed is contacted with a reducing gas stream to regenerate the bed by reducing the retained inorganic sulfates and/or sulfur oxides to hydrogen sulfide and/or sulfur dioxide, to thereby form a hydrogen sulfide and/or sulfur dioxide bearing stream. The feeds to each of the beds are realigned to place the second and third beds in series with the sulfur oxide and/or sulfur dioxide enriched stream being fed to the second bed and to place the first bed in a regenerative mode. Thereafter, the foregoing steps are repeated whereby each of the three beds are sequentially placed in an initial bed mode in the series, a regenerative mode, and a second bed mode in the series.
摘要:
A hydrocarbon feed containing C4-C7 olefins and/or paraffins is converted to light olefins, by contacting the feed with a catalyst containing ZSM-5 and/or ZSM-11, having an initial silica to alumina ratio greater than about 300:1, and phosphorus.
摘要:
Apparatuses and processes for converting an oxygenate feedstock, such as methanol and/or dimethyl ether, in a fluidized bed containing a catalyst to hydrocarbons, such as gasoline boiling components, olefins and aromatics are provided herein.
摘要:
Apparatuses and processes for converting an oxygenate feedstock, such as methanol and dimethyl ether, in a fluidized bed containing a catalyst to hydrocarbons, such as gasoline boiling components, olefins and aromatics are provided herein.
摘要:
The present invention provides an automated research seed planting system, method, and apparatus. The system, method, and apparatus may include a planter configured for planting a research plot and comprising a seed package assembly handling device configured to receive a seed package assembly containing a research seed sample, and a controller configured to communicate with the seed package assembly handling device. The controller is configured to automatically control the seed package assembly handling device to release the research seed sample. In various embodiments, the research seed planter may include a positional data acquisition system configured to acquire position data associated with one or more research seed planting events.
摘要:
A package assembly for automated aliquot and/or dispersal processes is provided. Embodiments of the present invention include, but are not limited to: first and second portions which cooperate to contain the aliquot, wherein a pair of flexure channels are defined in opposing sides of at least one of the first or second portions, the flexure channels cooperating to define a flexure axis extending through the pair of flexure channels. Thus, embodiments of the present invention may allow at least one of first and second portions of the package assembly to flex about the flexure axis in response to a force exerted on the package assembly such that the first and second portions separate in response to the force.
摘要:
A photocurable composition comprising: (a) a cationically curable component preferably formed from one or more epoxy compound(s), (b) an acrylate component having no or a low amount of hydroxy groups preferably dipentaerythritol hexaacrylate, (c) a polyol component, preferably a polyether polyol, (d) a cationic photoinitiator; and (e) a free radical photoinitiator. The composition may produce when cured three-dimensional articles with high clarity and improved mechanical properties.
摘要:
A package assembly for automated aliquot and/or dispersal processes is provided. Embodiments of the present invention include, but are not limited to: first and second portions which cooperate to contain the aliquot, wherein a flexure channel is defined in each of opposite sides of at least one of the first or second portions, the flexure channels cooperating to define a flexure axis extending through the pair of flexure channels. Thus, embodiments of the present invention may allow at least one of first and second portions of the package assembly to flex about the flexure axis in response to an opening force exerted on the package assembly such that the first and second portions separate in response to the opening force.