摘要:
A process and apparatus to enable the continuous isolation of an organometallic compound, such as trimethylindium from a liquid feedstock. The liquid feedstock is delivered to a distillation column having two heating zones to effect dissociation of the feed stock thereby liberating the organometallic compound, which is collected as a vapor from the top of the column.
摘要:
A method and apparatus for the bulk delivery of a precursor, such as an organometallic compound, from a bulk container, such as a bubbler (1) to a plurality of reactor sites (12, 14, 16, 18, 20) wherein a carrier gas (2) is introduced into the container (1) of the precursor to pick up the precursor to form a gaseous mixture. The gaseous mixture is then selectively distributed to one or more of a plurality of reactor sites (12, 14, 16, 18, 20). The gaseous mixture may be stored in a reservoir (9) and be drawn by means of a pressure differential or under vacuum to each of the reactor sites, when required.
摘要:
A process and apparatus for the continuous production of organometallic compounds from a metal precursor and an alkylating agent. The reactants are delivered separately to a reaction centre (26) in a distillation column (2) wherein the reaction is maintained at a predetermined temperature to allow collection of the vaporised organometallic compound from the top of the column and removal of the waste products from the bottom of the column.
摘要:
A bubbler (2) for delivering liquid or solid metalorganic compounds to a reactor site. The bubbler has an inner and outer chamber and has a member (14) positioned between its inlet (6) and outlet (8) that is provided with a plurality of apertures therein. The member (14) is preferably in the form of a perforated disc having a predefined density of apertures therein to provide optimum pick up and flow of carrier gas through the bubbler.
摘要:
A bubbler (2) for delivering liquid or solid metalorganic compounds to a reactor site. The bubbler has an inner and outer chamber and has a member (14) positioned between its inlet (6) and outlet (8) that is provided with a plurality of apertures therein. The member (14) is preferably in the form of a perforated disc having a predefined density of apertures therein to provide optimum pick up and flow of carrier gas through the bubbler.
摘要:
The present invention relates to a non yeast-leavened fine bakery product with increased shelf life and to a process for increasing the shelf life of intermediate and high moisture fine bakery products. The fine bakery product comprises an intermediate or high moisture baked product having a water activity aw>0.8. Its surface has deposited thereon an effective amount of natamycin, which is sufficient to keep the product mould free when packaged for a storage time of 2 weeks or more at ambient temperature. In the process the outer surface of a baked product is sprayed with natamycin to deposit an effective amount of natamycin thereon, whereafter the sprayed product is packaged in a protective envelope.
摘要:
The invention provides an improved means of purifying water which comprises a water treatment apparatus comprising a treatment housing (10, 60) having an inlet (18, 65) for the water to be treated, an outlet (25, 67) for the treated water, a heater (17, 76) within the housing to come into direct contact with the water and a filter (22, 23, 78, 79) between the heater and the outlet, characterised in that means (38, 81) are provided to fill the housing with water up to a maximum level which leaves a headspace (10A, 80A) between the water and the roof (14, 61) of the housing, the entrance to the outlet being below the operating water level (10B, 80).
摘要:
A highly reliable and safe, modular automatic refill (bulk delivery) system for ultra-high purity pyrophoric metalorganic chemicals employing: a manifold that insures contamination-free operation; a liquid-level detection system with fail-safe redundancy; and an evacuation system which leaves the system's manifold and transfer lines relatively free of chemical fire hazards; leaves them free of oxygen contamination; and leaves the composition of the system's carrier gas unaffected, between refills.
摘要:
A system and method for facilitating infrared (IR) communications from a first device, such as a set top box, to a second device, such as a remote control, in the presence of an IR noise generating device, such as a plasma television, by using at least one of the first device and the second device to actively reduce a level of IR noise being generated by the IR noise generating device during an IR transmission from the first device to the second device.
摘要:
An in-line digital cable television adapter and method for receiving and converting digital television signals to an analog format for display on an analog television set. Dual-capable video decryption and decoding is available to support a television, VCR, and a picture-in-picture independently and simultaneously. Dual-BTSC audio and video frequency modulators are available for output. A bypass switch selectively switches between television channels for modulation and for passing an analog supplied television signal directly to the analog television set. An infrared transceiver integrated with the digital cable adapter receives infrared frequencies from a compatible infrared remote control and stimulates input to a target infrared receiver.