365 results about "Side stream" patented technology

A virtual stream (VS) in a basic service set (BSS) in a wireless local area network (WLAN) that exists solely within the medium access control (MAC) sublayer of the WLAN. The VS includes a unidirectional path in the wireless network between a station sourcing a quality of service (QoS) session and at least one station receiving the QoS session in the same BSS. The VS is defined by a VS identifier (VSID) that is unique within and local to the BSS, an address of the sourcing station, and an address of the at least one receiving station. The VS can be a virtual down-stream (VDS), a virtual up-stream (VUS) or a virtual side-stream (VSS). The VS can be a unitcast or a multicast VS.

A metal distribution system for the simultaneous production of a plurality of logs or round billets from molten metal comprising: 1) a trough for the introduction of molten metal; 2) a plurality of side streams extending from the trough and each of the side streams including a plurality of opposing apertures each of the apertures including a thimble for the shaping of molten metal passing through the trough and the side streams and into the thimbles. A uniform flow of molten metal into the side streams and the individual apertures is provided by the controlled negative angular orientation of the most upstream opposing pair of apertures thereby providing relative uniformity of the temperature of molten metal reaching each of the plurality of apertures. A unique unitized thimble configuration and trough damming arrangement are also described.

A method and a system are disclosed for providing quality of service (QoS)-driven channel access within a basic service set (BSS) in a wireless network. A point coordinator (PC) station determines whether at least one of upstream traffic and side-stream traffic is scheduled to be transmitted from at least one non-PC station At least one available TO is allocated to each selected non-PC having at least one traffic to transmit. A multipoll frame containing information relating to at least two allocated TOs is then sent from the PC station containing information relating to each allocated TO.

A preferred process arrangement utilizes the enthalpy of the flue gas, which can be supplemented if need be, to convert urea (30) into ammonia for SCR. Urea (30), which decomposes at temperatures above 140 ° C., is injected (32) into a flue gas stream split off (28) after a heat exchanger (22), such as a primary superheater or an economizer. Ideally, the side stream would gasify the urea without need for further heating; but, when heat is required it is far less than would be needed to heat either the entire effluent (23) or the urea (30). This side stream, typically less than 3% of the flue gas, provides the required temperature and residence time for complete decomposition of urea (30). A cyclonic separator can be used to remove particulates and completely mix the reagent and flue gas. This stream can then be directed to an injection grid (37) ahead of SCR using a blower (36). The mixing with the flue gas is facilitated due to an order of magnitude higher mass of side stream compared to that injected through the AIG in a traditional ammonia-SCR process.

A method and a system are disclosed for setting up, modifying and tearing down a side-stream communication session in a basic service set (BSS) in a wireless network so that the communication session has a defined Quality of Service (QoS). Regarding setting up a side-stream communication session, a first Path message and a first Resv message (Path/Resv message) of a RSVP protocol is detected at a designated subnet bandwidth manager (DSBM) in a station having a point coordinator (PC). The first Resv message originates from a RSVP agent of a destination non-PC station in the BSS and requests resource reservation for setting up a side-stream session between a source non-PC station and at least one destination non-PC station in the same BSS. The DSBM extracts a QoS parameter set and a classifier from the first Path/Resv message for the session.

A side-stream respiration monitoring sensor includes a body having a first end, a second end, and a detecting section disposed between the respective ends. The detecting section includes a first port and a second port positioned on generally opposite sides of a restricting member. The restricting member extends into a flow path formed through the body such that a pressure differential is generated between the first port and the second port. A sampling port is positioned downstream relative to a patient from the first and the second port and configured to acquire a respiration sample. The sensor is constructed to monitor respiration performance of premature infants “preemies”, or the like.

The present invention is an aftertreatment system for lean burn internal combustion engines. The present invention provides a multiple branch lean NOx trap, or LNT, with a diverter valve operable to selectively direct lean exhaust flow to one portion of the LNT while another portion of the LNT regenerates in a low oxygen environment. Additionally, the present invention employees a continuously operating side stream exhaust fuel reformer that delivers a reductant, such as partially oxidized (POx) gas or reformate, to the LNT for regeneration. The present invention also provides a method of exhaust aftertreatment of a lean burn internal combustion engine utilizing the system provided.

An improved delayed coking process utilizing a coking unit and a coking unit product fractionating column which includes the steps of:

• • heating a mixture of a fresh whole crude oil feedstream and the bottoms from the coking unit product fractionator in a furnace to a coking temperature in the range of 480° C. to 530° C./896° F. to 986° F.;
  • introducing the heated mixed whole crude oil and bottoms feedstream directly into the delayed coking unit;
  • optionally passing the vaporized liquid and gaseous coking unit product stream into a flash unit;
  • recovering a light product gas stream that includes H₂S, NH₃ and C1 to C4 hydrocarbons from the flash unit;
  • transferring the bottoms from the flash unit to the coking unit product fractionating column;
  • recovering as separate side streams from the fractionating column naphtha, light gas oil and heavy gas oil;
  • recycling a portion of the heavy gas oil by introducing it into the fractionating column optionally with the bottoms from the flash unit;
  • mixing the fractionating column bottoms with the whole crude oil feedstream to form the mixed feedstream; and
  • introducing the mixed whole crude oil and fractionating column bottoms feedstream into the furnace.

Processing and use of whole fruits and vegetables or side-stream ingredients of juice extraction, paste, or ketchup process, or canning industry, in particular, the processing of the by-products, including pomace, and its use in beverage and food products.

The invention relates to a method for measuring tobacco-specific nitrosamines (TSNAs for short) by using a super efficient liquid chromatogram-tandem mass spectrum combined method, and belongs to a method for detecting TSNAs. The method comprises the following steps of: adding internal standard-containing aqueous solution of ammonium acetate into a filter sheet after trapping smoke and cigarette filters smoked completely under standard conditions or tobacco shreds, performing ultrasonic extraction, transferring 1 to 2mL of extract into a small solid-phase extraction column taking N-vinyl pyrrolidone-benzene sulfonic acid copolymer as filler, flushing the small column by using aqueous solution of methanoic acid and methanol, finally eluting the small column by using solution of aqueous ammonia and methanol solution, analyzing the eluant by using an ultra performance liquid chromatography-mass spectrometer/mass spectrometer (UPLC-MS/MS), and quantifying according to the area ratio of a component peak to an isotope internal standard peak. The detecting method can be used for detecting the TSNAs in cured and hybrid cigarette mainstream smoke, cigarette side-stream smoke, filter tip intercepting smoke and tobacco shreds, and has the advantages of simple pretreatment, accurate quantification, high instrument analysis speed, low detection limit, high sample treatment flux and the like.

A preferred apparatus arrangement utilizes the enthalpy of the flue gas, which can be supplemented if need be, to convert urea (30) into ammonia for SCR. Urea (30), which decomposes at temperatures above 140.degree. C., is injected (32) into a flue gas stream split off (28) after a heat exchanger (22), such as a primary superheater or an economizer. Ideally, the side stream would gasify the urea without need for further heating; but, when heat is required it is far less than would be needed to heat either the entire effluent (23) or the urea (30). This side stream, typically less than 3% of the flue gas, provides the required temperature and residence time for complete decomposition of urea (30). A cyclonic separator can be used to remove particulates and completely mix the reagent and flue gas. This stream can then be directed to an injection grid (37) ahead of SCR using a blower (36). The mixing with the flue gas is facilitated due to an order of magnitude higher mass of side stream compared to that injected through the AIG in a traditional ammonia-SCR process.

This invention relates generally to the treatment of NOx in combustion flue gas. In certain embodiments, the invention relates to the use of a regenerative heat exchanger (RHE) to convert urea to ammonia in a side stream of flue gas. Ammonia and/or other urea decomposition products exit the heat exchanger, are mixed with the rest of the flue gas, and enter a selective catalytic reduction (SCR) unit for reduction of NOx in the flue gas. The use of an RHE significantly improves the thermal efficiency of the overall process. More particularly, in certain embodiments, the regenerative heat exchanger is a dual chamber RHE.

A process for the production of ethanol wherein a hydrolyzed lignocellulosic biomass is fermented in the presence of a stillage residue. The fermentation of cellulosic hydrolysates is improved by adding prior to and/or during fermentation a stillage residue side stream from a corn starch-to-ethanol process as a nutrient source for the yeast organisms used in the fermentation. Stillage residues from the grain dry mill ethanol producing process, including the whole stillage, wet cake, thin stillage, and/or syrup are added to assist as a nitrogen and nutrient source for the fermentive processes. The stillage residue is produced by any grain-to-ethanol process.

The invention is directed to methods, apparatuses, and systems for treatment of a liquid flow comprising addition of a chemical treatment at at least two locations along a side stream of a main flow of said liquid, in which the dosing by such additions is sufficient to treat the entire main flow upon return of the side stream to the main flow. Algorithms are utilized to control the additions at the locations of addition of chemical treatments. In a typical embodiment, one chemical addition is principally proportional to the flow rate of the liquid flow, and the other chemical addition is principally adjusted based on signals from a primary measuring device that measures a parameter in the flow after one or both chemical additions. The addition of chlorine dioxide as the chemical treatment, to disinfect wastewater, is discussed.

A liquid-loop compound recuperator is disclosed for high-ε heat exchange between a first shell-side fluid stream and a second shell-side fluid stream of similar thermal capacity rates (W/K). The compound recuperator is comprised of at least two fluid-to-liquid (FL) recuperator modules for transfer of heat from a shell-side fluid, usually a gas, to an intermediary tube-side heat transfer liquid (HTL). Each FL module includes a plurality of thermally isolated, serially connected, adjacent exchanger cores inside a pressure vessel. The cores are rows of finned tubes for cross-flow transfer of heat, and they are arranged in series to effectively achieve counterflow exchange between the HTL and the shell-side stream. The HTL may be water, an organic liquid, a molten alloy, or a molten salt.

The invention discloses a method for collecting and detecting aerosol in side-stream smoke, which is applicable to cigarettes having different concentrations of tar. The method comprises the following steps: organically combining with a mixing and diluting device to greatly extend the range of the system in diluting the smoke, particularly extend the range of dilution to 3.6:1-600:1; and organically setting the multistage diversions and multi-layer parameters of the system to lead the system to simultaneously meet the standard requirements that the tail-end flow rate of a sample reaches 10L/min-40L/min and the front-end ambient air velocity reaches 170mm/s-230mm/s in the detection of the side-stream smoke of the cigarettes having different concentrations of tar and ensure that the detection result is reliable and sensitive. Therefore, the method of the invention is suitable for the detection of cigarette samples with the tar content span ranging from 0.5mg to 80mg per cigarette and achieves the detection of the aerosol in the side-stream smoke of various types of cigarettes by the same system for the first time.

A method for producing polyisocyanurate insulation foams, the method comprising contacting an A-side stream of reactants that includes an isocyanate with a B-side stream of reactants that include a polyol and a blowing agent, where the blowing agent includes isopentane and n-pentane in a substantial absence of cyclopentane.

One exemplary embodiment can be a system for separating a plurality of naphtha components. The system can include a column, an overhead condenser, and a side condenser. Generally, the column includes a dividing imperforate wall with one surface facing a feed and another surface facing at least one side stream. Typically, the wall extends a significant portion of the column height to divide the portion into at least two substantially vertical, parallel contacting sections. Typically, the overhead condenser receives an overhead stream including a light naphtha from the column. Usually, a side condenser receives a process stream from the column and returns the stream to the column to facilitate separation. A cooling stream may pass through the overhead condenser and then the side condenser.

A process for producing acetic acid is disclosed in which the water concentration is controlled in the side stream between two columns. Controlling the water concentration by the liquid light phase recycle controls the hydrogen iodide concentration in the side stream to be less than or equal to 50 wppm.