Abstract:
A universal switch, comprising a plurality of terminals and a plurality of interconnected independently switchable switches coupled to the terminals, where the plurality of interconnected switches are configurable to connect any subset of the terminals to any other subset of the terminals, and optionally, to disconnect all the terminals. One implementation includes a first terminal, a second terminal, a third terminal, and a plurality of interconnected switches coupled to the terminals. The plurality of interconnected switches are configurable to implement a variety of interconnections between the terminals, including: the first terminal connected only to the second terminal, the first terminal connected only to the third terminal, the second terminal connected only to the third terminal, the first terminal connected to the second terminal and the third terminal, and optionally, all three terminals disconnected.
Abstract:
A process for selectively converting a dialkyl ether to the corresponding alkene and alkanol comprises contacting a feed containing at least one dialkyl ether with a catalyst comprising a mixed metal oxide which comprises at least one metal selected from Group 4 of the Periodic Table of Elements and at least one metal selected from Group 3 (including the Lanthanides and Actinides) and Group 6 of the Periodic Table of Elements.
Abstract:
A selectivated molecular sieve, e.g., ZSM-22 or ZSM-23, is used as olefin oligomerization catalyst to provide product, e.g., octenes and dodecenes from butene, having a low degree of branching and hindered double bonds.
Abstract:
This invention relates to a method of making an olefin from a dialkyl ether comprising (a) introducing an ether having a formula CxH2x+1CyH2y+1 into a thermal or catalytic cracking unit processing a hydrocarbon feedstock; and (b) decomposing at least a portion of the ether to form an olefin having a formula CxH2x and/or CyH2y and an alcohol having a formula CxH2x+1 and/or CyH2y+1OH, wherein x and y independently range from about 1 to about 30. This invention also relates to a method of reducing coking in a thermal or catalytic cracking unit comprising (a) introducing an ether, having a formula CxH2x+1OCyH2y+1, into the cracking unit processing a hydrocarbon feedstock in an amount effective to reduce coke formation relative to processing the hydrocarbon feedstock in the absence of the ether, wherein x and y independently range from about 1 to about 30.
Abstract translation:本发明涉及一种由二烷基醚制备烯烃的方法,该方法包括:(a)引入具有式C x 2 H 2 x + 1 C y的醚, / 2> 2y + 1< / 2>到处理烃原料的热或催化裂化装置; 和(b)分解至少一部分醚以形成具有式C x H 2 H 2和/或C y H的烯烃 2y和具有式C x H 2 x + 1和/或C y y H的醇, 2y + 1H OH,其中x和y独立地在约1至约30的范围内。本发明还涉及在热或催化裂化单元中还原焦化的方法,其包括(a)引入具有式 C x 2 x + 1 O 2 H 2 y + 1 N,进入裂化装置中处理烃原料 相对于在不存在醚的情况下相对于处理烃原料而有效降低焦炭形成的量,其中x和y独立地为约1至约30。
Abstract:
A dimensionally flexible sparse matrix comprising multiple ports connected to a plurality of interconnected universal switches is disclosed. Each universal switch has at least three terminals and is switchable to connect any pair or all three terminals together. The plurality of interconnected universal switches are independently switchable to connect any one or more ports of the sparse matrix to any subset of the other ports. The sparse matrix may also be configurable to duplicate the connectivity of a variety of dimensionally different switch matrices by designating a first subset of the multiple ports as row ports and a second subset of the remaining ports as column ports with the added flexibility of connecting row-to-row and/or column-to column. The small physical size of signal stubs in the universal switches results in a signal path between any pair of terminals that may be suitable for the transmission of signal frequencies greater than approximately 500 mega-hertz.
Abstract:
In a process for preparing an alkylaromatic hydrocarbon composition an olefinic hydrocarbon mixture and an aromatic compound are contacted under alkylation conditions with an aromatic alkylation catalyst selected from a homogeneous acid catalyst and heterogeneous acid catalyst comprising a molecular sieve having an X-ray diffraction pattern including d-spacing maxima at 12.4±0.25, 6.9±0.15, 3.57±0.07 and 3.42±0.07 Angstroms. The olefinic hydrocarbon mixture comprises at least 5 wt % by weight of mono-olefin oligomers of the empirical formula: CnH2n wherein n is greater than or equal to 10, the mono-olefin oligomers comprising at least 20 percent by weight of olefins having at least 12 carbon atoms, and the olefins having at least 12 carbon atoms having an average of from 0.8 to 2.0 C1-C3 alkyl branches per carbon chain. Sulfonation of the alkylaromatic hydrocarbon product produces an alkylaryl sulfonate mixture that exhibits advantageous properties, such as biodegradability and hard and cold water performance.
Abstract translation:在制备烷基芳族烃组合物的方法中,烯烃混合物和芳族化合物在烷基化条件下与选自均相酸催化剂的芳族烷基化催化剂和包含具有包括d的X射线衍射图的分子筛的多相酸催化剂接触 最大值为12.4±0.25,6.9±0.15,3.57±0.07和3.42±0.07埃。 烯烃混合物包含至少5重量%的以下经验式的单烯烃低聚物:<?in-line-formula description =“In-line Formulas”end =“lead”?> C n 其中n大于或等于10,单烯烃低聚物包含:其中n大于或等于10,其中n大于或等于10,单烯烃低聚物包含 至少20重量%的具有至少12个碳原子的烯烃,并且具有至少12个碳原子的烯烃具有平均0.8-2.0℃-1-3C 3 >每个碳链的烷基支链。 烷基芳族烃产物的磺化产生显示出有利性质的烷基芳基磺酸盐混合物,例如生物降解性和冷水和冷水性能。
Abstract:
This invention relates to a process for the production of an alcohol, the process comprising (a) reacting an olefin and water in the presence of a catalyst under conditions sufficient to form a crude alcohol stream comprising alcohol, and a dialkyl ether; (b) separating at least a portion of the crude alcohol stream into an alcohol-containing stream and a dialkyl ether stream; (c) contacting at least a portion of the dialkyl ether stream with an ether decomposition catalyst, the ether decomposition catalyst comprising a mixed metal oxide having the following composition XmYnZpOq where X is at least one metal selected from Group 4 of the Periodic Table of Elements, Y is at least one metal selected from Group 3 (including the Lanthanides and Actinides) and Group 6 of the Periodic Table of Elements and Z is at least one metal selected from Groups 7, 8, and 11 of the Periodic Table of Elements; m, n, p, and q are the atomic ratios of their respective components and, when m is 1, n is from about 0.01 to about 0.75, p is from 0 to about 0.1, and q is the number of oxygen atoms necessary to satisfy the valence of the other components, to form a crude dialkyl ether decomposition stream comprising alcohol and olefin; (d) recovering at least a portion of the olefin from the crude dialkyl ether decomposition stream; and (e) recycling at least a portion of the olefin recovered in step (d) to step (a).
Abstract:
A device for warming and illuminating pre-packaged, pre-wetted disposable towels is provided. The unit also secures a plastic canister of disposable towels so that the towels may be dispensed with one hand. A cup sized to enclose the canister in an upper sector has a supporting dish, upon the upper surface of which is provided a series of lips to engage various diameter plastic canisters containing the towels. The dish has a recessed bowl at its center in which one or more small incandescent light bulbs are mounted to warm the fluid pool within the canister and to provide illumination through a translucent window portion of the cup. The top of the dispenser is capped to retain the container from above, while the dish is spring mounted within the cup to assure a snug vertical fit of the container within the cup. A dispenser opening is provided in the cap of the unit, through which the towels from the container are pulled out. A suction cup at the base of the cup secures the entire unit to another surface to assure that the dispenser does not move as towels are being dispensed.