Air conditioning wiring system

A wiring system for use in an air conditioning system comprising a printed circuit board having wiring receptacles and wiring connectors. In one aspect, at least some of the wiring receptacles comprise two or more wiring sub-receptacles, and each of the wiring sub-receptacles includes a slotted sub-receptacle connection pattern. Furthermore, the slotted sub-receptacle connection pattern of each of the wiring sub-receptacles is different from every other sub-receptacle connection pattern. Each of the wiring connectors includes a ridged connection pattern that is different from every other ridged connection pattern of the wiring connectors, such that a given wiring connector is receivable within only one of the wiring sub-receptacles. An air conditioning system and a method of manufacturing is also provided.

MULTIPLE PASS, PARALLEL FLOW DOWNCOMER TRAY FOR A MASS TRANSFER COLUMN

A multiple pass, parallel flow downcomer tray for a mass transfer column and method for liquid-vapor contacting in a mass transfer column is provided. The multiple pass, parallel flow downcomer tray has at least four mass transfer decks configured to provide contact between an ascending vapor passing upward through apertures on the tray surface and a traversing liquid on the tray surface. The tray further includes a central downcomers disposed near a central axis of the tray and two or more peripheral downcomers disposed near the edge of the tray and spaced apart from the central axis, wherein at least two of the four mass transfer decks are configured to discharge the traversing liquid into the peripheral downcomers and two of the four mass transfer decks are configured to discharge the traversing liquid into the central downcomer. 1. A multiple pass , parallel flow downcomer tray for a mass transfer column comprising:an annular tray having a tray surface;a plurality of mass transfer decks on the tray surface of the annular tray, each of the mass transfer decks having a plurality of apertures through the tray surface, and wherein each mass transfer deck being disposed adjacent to at least two other mass transfer decks and configured to provide contact between an ascending vapor passing through the apertures and a traversing liquid on the tray surface; anda plurality of downcomers configured for collecting and discharging the liquid from the mass transfer decks, including one or more central downcomers disposed proximate a central axis of the annular tray and two or more peripheral downcomers disposed proximate the periphery of the annular tray and spaced apart from the central axis,one or more ramp-like peripheral channels and one or more peripheral liquid receiving pans disposed on the tray surface, the ramp-like peripheral channels configured to direct descending liquid received by the one or more ramp-like peripheral channels to the one or more peripheral liquid ...

Contacting device and method

The present invention provides a vapor-liquid contact device for use in a distillation column and method incorporating the use of such a vapor-liquid contact device. The vapor-liquid contact device has arrays of elongated strips to support a falling film of a liquid and contact of a vapor with the film. The strips are supported in a structure having top and bottom sections connected to opposite ends of the strips. The top sections have apertures in registry with the strips so that liquid distributed to the top section seeps out of the apertures to initiate formation of the falling film. Openings are provided at the top and bottom sections, so that a vapor is able to pass through the support structure to contact the falling film to effect contact between the liquid and the vapor. Liquid distributors are associated with the top section to distribute the liquid to the apertures.

ANNULAR DIVIDED WALL COLUMN FOR AN AIR SEPARATION UNIT

An annular divided wall column for the cryogenic rectification of air or constituents of air is provided. The annular divided wall column includes a first annular column wall and a second annular column wall disposed within the first annular column wall and radially spaced therefrom to define an annulus column region as the space between the first annular column wall and the second annular column wall. An interior core column region is also defined by the interior space of the second annular column wall. The present annular divided wall column further includes a plurality of packing elements, plurality of trays or a heat exchange device disposed within the interior core column region; and a plurality of packing elements disposed within the annulus column region. 1. An annular column for cryogenic rectification of air or constituents of air , said column comprising:a first annular column wall;a second annular column wall radially spaced from the first annular column wall and disposed within a first interior space of the first annular column wall to define an annulus column region between the first annular column wall and the second annular column wall and to define an interior core column region as part or all of a second interior space of the second annular column wall; anda plurality of packing elements disposed within the annulus column region;wherein the interior core column region does not contain packing elements.2. The annular column of claim 1 , wherein a plurality of trays are disposed within the interior core column region.3. The annular column of claim 1 , wherein a heat exchange device or a phase separator device is disposed within the interior core column region.4. The annular column of claim 1 , wherein a plurality of trays and a heat exchange device are disposed within the interior core column region.5. The annular column of claim 1 , wherein the first annular column wall and the second annular column wall are concentrically disposed relative to one ...

Annular divided wall column for an air separation unit

An annular divided wall column for the cryogenic rectification of air or constituents of air is provided. The annular divided wall column includes a first annular column wall and a second annular column wall disposed within the first annular column wall and radially spaced therefrom to define an annulus column region as the space between the first annular column wall and the second annular column wall. An interior core column region is also defined by the interior space of the second annular column wall. The present annular divided wall column further includes a plurality of packing elements, plurality of trays or a heat exchange device disposed within the interior core column region; and a plurality of packing elements disposed within the annulus column region.

ANNULAR DIVIDED WALL COLUMN FOR AN AIR SEPARATION UNIT

An annular divided wall column for the cryogenic rectification of air or constituents of air is provided. The annular divided wall column includes a first annular column wall and a second annular column wall disposed within the first annular column wall to define an annulus column region and an interior core column region. The present annular divided wall column further includes structured packing elements disposed within at least the annulus column region as well as a ring-shaped cantilevered collector; and a ring-shaped distributor disposed in the annulus column region above or below the plurality of structured packing elements. The thermal expansion and contraction of the second annular column wall in a radial direction and in an axial direction is independent of the thermal expansion and contraction of the first annular column wall in the radial and axial directions. 1. An annular divided wall column for cryogenic rectification of air or constituents of air , said column comprising:a first annular column wall;a second annular column wall radially spaced from the first annular column wall and disposed within a first interior space of the first annular column wall to define an annulus column region between the first annular column wall and the second annular column wall and to define an interior core column region as part or all of a second interior space of the second annular column wall;a conical shaped transition wall connected to the second annular column wall proximate a top end of the second annular column wall and further connected to the first annular column wall and configured to isolate the annulus column region from the interior core column region proximate the top end of the second annular column wall;a plurality of structured packing elements or trays disposed within the interior core column region; anda plurality of structured packing elements disposed within the annulus column region;wherein thermal expansion and contraction of the second annular ...

ANNULAR DIVIDED WALL COLUMN FOR AN AIR SEPARATION UNIT HAVING A RING SHAPED SUPPORT GRID

An annular divided wall column for the cryogenic rectification of air or constituents of air is provided. The annular divided wall column includes a first annular column wall and a second annular column wall disposed within the first annular column wall to define an annulus column region and an interior core column region. The present annular divided wall column further includes structured packing elements disposed within at least the annulus column region as well as a ring-shaped cantilevered collector; and a ring-shaped distributor disposed in the annulus column region above or below the plurality of structured packing elements. The thermal expansion and contraction of the second annular column wall in a radial direction and in an axial direction is independent of the thermal expansion and contraction of the first annular column wall in the radial and axial directions. 1. An annular divided wall column for cryogenic rectification of air or constituents of air , said column comprising:a first annular column wall;a second annular column wall radially spaced from the first annular column wall and disposed within a first interior space of the first annular column wall to define an annulus column region between the first annular column wall and the second annular column wall and to define an interior core column region as part or all of a second interior space of the second annular column wall;a ring-shaped support grid having an inner annular edge member and an outer annular edge member, the ring-shaped support grid disposed in the annulus column region with the outer annular edge member attached to the first annular column wall and the inner annular edge member unattached to the second annular column wall, and wherein thermal expansion and contraction of the second annular column wall in a radial direction and in an axial direction is independent of the thermal expansion and contraction of the ring-shaped support grid and the first annular column wall in the radial ...

ANNULAR DIVIDED WALL COLUMN WITH RING SHAPED COLLECTORS AND DISTRIBUTERS FOR AN AIR SEPARATION UNIT

An annular divided wall column for the cryogenic rectification of air or constituents of air is provided. The annular divided wall column includes a first annular column wall and a second annular column wall disposed within the first annular column wall to define an annulus column region and an interior core column region. The present annular divided wall column further includes structured packing elements disposed within at least the annulus column region as well as a ring-shaped cantilevered collector; and a ring-shaped distributor disposed in the annulus column region above or below the plurality of structured packing elements. The thermal expansion and contraction of the second annular column wall in a radial direction and in an axial direction is independent of the thermal expansion and contraction of the first annular column wall in the radial and axial directions. 1. An annular divided wall column for cryogenic rectification of air or constituents of air , said column comprising:a first annular column wall;a second annular column wall radially spaced from the first annular column wall and disposed within a first interior space of the first annular column wall to define an annulus column region between the first annular column wall and the second annular column wall and to define an interior core column region as part or all of a second interior space of the second annular column wall;a plurality of structured packing elements disposed within the annulus column region;one or more ring-shaped cantilevered collectors disposed in the annulus column region above or below the plurality of structured packing elements, the one or more ring-shaped cantilevered collectors rigidly attached to one of the first annular column wall or second annular column wall and extending radially toward the other annular column wall; andone or more ring-shaped distributors disposed in the annulus column region above or below the plurality of structured packing elements;wherein thermal ...

MULTIPLE PASS, PARALLEL FLOW DOWNCOMER TRAY FOR A MASS TRANSFER COLUMN

A multiple pass, parallel flow downcomer tray for a mass transfer column and method for liquid-vapor contacting in a mass transfer column is provided. The multiple pass, parallel flow downcomer tray has at least four mass transfer decks configured to provide contact between an ascending vapor passing upward through apertures on the tray surface and a traversing liquid on the tray surface. The tray further includes a central downcomers disposed near a central axis of the tray and two or more peripheral downcomers disposed near the edge of the tray and spaced apart from the central axis, wherein at least two of the four mass transfer decks are configured to discharge the traversing liquid into the peripheral downcomers and two of the four mass transfer decks are configured to discharge the traversing liquid into the central downcomer. 1. A multiple pass downcomer tray for a mass transfer column comprising:an annular tray having a tray surface;an annular support ring attached to the tray;at least four mass transfer decks on the tray surface of the annular tray and each of the at least four mass transfer decks having a plurality of apertures through the tray surface, and wherein each mass transfer deck being disposed adjacent to at least two other mass transfer decks and configured to provide contact between an ascending vapor passing through the apertures and a traversing liquid on the tray surface; anda plurality of downcomers configured for collecting and discharging the liquid from the mass transfer decks, including one or more central downcomers disposed proximate a central axis of the annular tray and two or more peripheral downcomers disposed proximate the annular support ring and spaced apart from the central axis, wherein each of the downcomers defining a channel for a descending liquid flow;wherein at least two of the at least four mass transfer decks are configured to discharge the traversing liquid into the two or more peripheral downcomers and at least two ...

ANNULAR DIVIDED WALL COLUMN

An annular divided wall column for the cryogenic rectification of air or constituents of air is provided. The annular divided wall column includes a first annular column wall and a second annular column wall disposed within the first annular column wall to define an annulus column region and an interior core column region. The present annular divided wall column further includes structured packing elements disposed within at least the annulus column region as well as a ring-shaped cantilevered collector; and a ring-shaped distributor disposed in the annulus column region above or below the plurality of structured packing elements. The thermal expansion and contraction of the second annular column wall in a radial direction and in an axial direction is independent of the thermal expansion and contraction of the first annular column wall in the radial and axial directions. 120-. (canceled)21. An annular divided wall column for distillation or rectification of fluids , said column comprising:a first annular column wall;a second annular column wall radially spaced from the first annular column wall and disposed within a first interior space of the first annular column wall to define an annulus column region between the first annular column wall and the second annular column wall and to define an interior core column region as part or all of a second interior space of the second annular column wall;a conical shaped transition wall rigidly connected to the first annular column wall and an upper end of the second annular column wall and wherein the conical shaped transition wall is configured to isolate the annulus column region from the interior core column region proximate the upper end of the second annular column wall;a first plurality of structured packing elements or trays disposed within the interior core column region and a second plurality of structured packing elements disposed within the annulus column region;wherein the second annular column wall is hung from ...

ANNULAR DIVIDED WALL COLUMN WITH RING SHAPED COLLECTORS AND DISTRIBUTERS

An annular divided wall column for the cryogenic rectification of air or constituents of air is provided. The annular divided wall column includes a first annular column wall and a second annular column wall disposed within the first annular column wall to define an annulus column region and an interior core column region. The present annular divided wall column further includes structured packing elements disposed within at least the annulus column region as well as a ring-shaped cantilevered collector; and a ring-shaped distributor disposed in the annulus column region above or below the plurality of structured packing elements. The thermal expansion and contraction of the second annular column wall in a radial direction and in an axial direction is independent of the thermal expansion and contraction of the first annular column wall in the radial and axial directions. 117-. (canceled)18. An annular divided wall column for distillation or rectification of fluids , said column comprising:a first annular column wall;a second annular column wall radially spaced from the first annular column wall and disposed within a first interior space of the first annular column wall to define an annulus column region between the first annular column wall and the second annular column wall and to define an interior core column region as part or all of a second interior space of the second annular column wall;a plurality of structured packing elements disposed within the annulus column region;one or more ring-shaped cantilevered collectors disposed in the annulus column region above or below the plurality of structured packing elements, the one or more ring-shaped cantilevered collectors having a first collector wall rigidly attached to the first annular column wall, a second collector wall disposed proximate to but unattached to the second annular column wall, and a collector deck disposed between the first collector wall and the second collector wall, and wherein the one or more ...

COMBINED COLLECTOR AND DISTRIBUTOR

A combined collector and distributor for a distillation column that includes a collector portion connected to a distributor portion. The distributor portion includes a channel-like distributor to distribute liquid into an underlying packing. The collector portion has spaced rows of collection elements that cover the open spaces and distribution elements of the distributor portion and one or more rectangular sumps into which descending liquid drains from the collection elements. The liquid in turn drains from the rectangular sump or sumps into a pre-distribution box located within a header of the distributor portion. The collection elements that cover the open spaces are set at higher positions than the collection elements covering the distribution elements to form chimneys to allow the ascending vapor to escape from the collector portion. 1. A combined collector and distributor for collecting a descending liquid from an overlying packing bed within a distillation column and distributing the descending liquid to an underlying packing bed within the distillation column , the combined collector and distributor comprising:at least two arrays of a plurality of spaced-apart distribution channels, the plurality of distribution channels having an open top portion and a perforated bottom wall to distribute the descending liquid to the underlying packing bed within the distillation column, the at least two arrays of distribution channels defining open spaces between adjacent distribution channels for passage of an ascending vapor from the underlying packing bed within the distillation column;one or more headers connected to and disposed between the adjacent arrays of distribution channels, the one or more header having an open top portion and a perforated bottom wall and configured to feed the descending liquid to the plurality of distribution channels in the at least two arrays;at least one pre-distribution box having an open top portion and a perforated bottom wall disposed ...

Annular divided wall column

An annular divided wall column is provided. The annular divided wall column includes a first annular column wall and a second annular column wall disposed within the first annular column wall and radially spaced therefrom to define an annulus column region as the space between the first annular column wall and the second annular column wall. An interior core column region is also defined by the interior space of the second annular column wall. The present annular divided wall column further includes a plurality of packing elements, disposed within the interior core column region within the annulus column region having different surface area densities and optionally, also have different geometries.

COMBINED COLLECTOR AND DISTRIBUTOR

A combined collector and distributor for a distillation column that includes a collector portion connected to a distributor portion. The distributor portion includes a channel-like distributor to distribute liquid into an underlying packing The collector portion has spaced rows of collection elements that cover the open spaces and distribution elements of the distributor portion and one or more rectangular sumps into which descending liquid drains from the collection elements. The liquid in turn drains from the rectangular sump or sumps into a pre-distribution box located within a header of the distributor portion. The collection elements that cover the open spaces are set at higher positions than the collection elements covering the distribution elements to form chimneys to allow the ascending vapor to escape from the collector portion. 1. A combined collector and distributor for collecting and distributing descending liquid within a distillation column , said combined collector and distributor comprising:a collector portion connected to a distributor portion;the distributor portion including a channel-like distributor having two opposed arrays of spaced apart, parallel distribution channels, at least one header located between and feeding the descending liquid to the distribution channels, open spaces situated between the distribution channels for passage of the ascending vapor and at least one open pre-distribution box located within the at least one header, the distribution channels and the at least one header having perforate bottom walls to distribute the descending liquid across the distillation column and open top portions; and two rows of collection elements configured to collect the descending liquid within the distillation column and covering the open spaces and the open top portions of the distribution channels to prevent the descending liquid from by-passing the collector portion, the collection elements staggered so that the collection elements ...

Method for liquid-vapor contacting in a mass transfer column using multiple pass, parallel flow downcomer trays

A multiple pass, parallel flow downcomer tray for a mass transfer column and method for liquid-vapor contacting in a mass transfer column is provided. The multiple pass, parallel flow downcomer tray has at least four mass transfer decks configured to provide contact between an ascending vapor passing upward through apertures on the tray surface and a traversing liquid on the tray surface. The tray further includes a central downcomers disposed near a central axis of the tray and two or more peripheral downcomers disposed near the edge of the tray and spaced apart from the central axis, wherein at least two of the four mass transfer decks are configured to discharge the traversing liquid into the peripheral downcomers and two of the four mass transfer decks are configured to discharge the traversing liquid into the central downcomer.

Airflow-confirming hvac systems and methods with variable speed blower

Systems and methods are disclosed that involve controlling a variable-speed blower in a heating, ventilating, and air conditioning (HVAC) system to ensure the setting of a blower-proving switch to confirm airflow in a building. In one instance, a method involves ramping up the variable-speed blower so that the associated static pressure reaches a making point pressure of the blower-proving switch and then reducing the power to a desired power level. The method may also include maintaining the power level above a breaking point pressure. Other systems and methods are presented.

Impact modification of styrenic polymers with polyolefin acrylic polymers

Disclosed is an impact modified resin comprises a matrix polymer resin and an impact modifier. The impact modifier comprises particles of a crosslinked polyolefin elastomer having one or more (meth)acrylic monomers grafted to the crosslinked polyolefin elastomer particles. The matrix polymer resin is a styrenic polymer.

Polyolefin/(meth)acrylic composite polymer composition and method of preparing same

A composite polymer composition comprising: the emulsion polymerization product of: (i) an aqueous polyolefin dispersion comprising the melt kneading product of one or more polyolefins, from 0.5 to 25 wt% of one or more dispersion stabilizing agents and water, and (ii) one or more (meth) acrylic monomers; wherein the one or more polyolefins have a Tg equal to or less than 50 °C; wherein the melt kneading product (i) comprises polymer particles having a volume average particle size between 50 nm and 2000 nm dispersed in the water; wherein the one or more dispersion stabilizing agents comprises a fatty acid or fatty acid salt stabilizing agent; and wherein the one or more (meth)acrylic monomers graft onto the polymer particles form composite polymer particles is provide. Also provided is a method of making the composition and impact modifiers comprising the composition.

Annular divided wall column for an air separation unit

An annular divided wall column for the cryogenic rectification of air or constituents of air is provided. The annular divided wall column includes a first annular column wall and a second annular column wall disposed within the first annular column wall to define an annulus column region and an interior core column region. The present annular divided wall column further includes structured packing elements disposed within at least the annulus column region as well as a ring-shaped cantilevered collector; and a ring-shaped distributor disposed in the annulus column region above or below the plurality of structured packing elements. The thermal expansion and contraction of the second annular column wall in a radial direction and in an axial direction is independent of the thermal expansion and contraction of the first annular column wall in the radial and axial directions.

Combined collector and distributor

A combined collector and distributor for a distillation column that includes a collector portion connected to a distributor portion. The distributor portion includes a channel-like distributor to distribute liquid into an underlying packing The collector portion has spaced rows of collection elements that cover the open spaces and distribution elements of the distributor portion and one or more rectangular sumps into which descending liquid drains from the collection elements. The liquid in turn drains from the rectangular sump or sumps into a pre-distribution box located within a header of the distributor portion. The collection elements that cover the open spaces are set at higher positions than the collection elements covering the distribution elements to form chimneys to allow the ascending vapor to escape from the collector portion.

Air conditioning wiring system

A wiring system for use in an air conditioning system comprising a printed circuit board having a perimeter and wiring receptacles located proximate the perimeter and wiring connectors. In one aspect, at least some of the wiring receptacles comprise two or more wiring sub-receptacles, and each of the wiring sub-receptacles includes a slotted sub-receptacle connection pattern. Furthermore, the slotted sub-receptacle connection pattern of each of the wiring sub-receptacles is different from every other sub-receptacle connection pattern. Each of the wiring connectors includes a ridged connection pattern that is different from every other ridged connection pattern of the wiring connectors, such that a given wiring connector is receivable within only one of the wiring sub-receptacles. An air conditioning system and a method of manufacturing is also provided.

Annular divided wall column for an air separation unit having a ring shaped support grid

An annular divided wall column for the cryogenic rectification of air or constituents of air is provided. The annular divided wall column includes a first annular column wall and a second annular column wall disposed within the first annular column wall to define an annulus column region and an interior core column region. The present annular divided wall column further includes structured packing elements disposed within at least the annulus column region as well as a ring-shaped cantilevered collector; and a ring-shaped distributor disposed in the annulus column region above or below the plurality of structured packing elements. The thermal expansion and contraction of the second annular column wall in a radial direction and in an axial direction is independent of the thermal expansion and contraction of the first annular column wall in the radial and axial directions.

Annular divided wall column for an air separation unit having a ring shaped support grid

An annular divided wall column for the cryogenic rectification of air or constituents of air is provided. The annular divided wall column includes a first annular column wall and a second annular column wall disposed within the first annular column wall to define an annulus column region and an interior core column region. The present annular divided wall column further includes structured packing elements disposed within at least the annulus column region as well as a ring-shaped cantilevered collector; and a ring-shaped distributor disposed in the annulus column region above or below the plurality of structured packing elements. The thermal expansion and contraction of the second annular column wall in a radial direction and in an axial direction is independent of the thermal expansion and contraction of the first annular column wall in the radial and axial directions.

multi-pass lowering tray, mass transfer column, and method of liquid-vapor contact

a presente invenção apresenta a uma bandeja rebaixadora de fluxo paralelo de múltiplas passagens para uma coluna de transferência de massa e a um método para contato do líquido com vapor em uma coluna de transferência de massa. a bandeja rebaixadora de fluxo paralelo de múltiplas passagens tem ao menos quatro plataformas de transferência de massa configuradas para fazer com que um vapor ascendente que passa para cima através das aberturas na superfície da bandeja entre em contato com um líquido que percorre a superfície da bandeja. a bandeja inclui adicionalmente um rebaixador central disposto próximo ao eixo central da bandeja e dois ou mais rebaixadores periféricos dispostos próximos à borda da bandeja e espaçados em relação ao eixo central, sendo que ao menos duas das quatro plataformas de transferência de massa são configuradas para descarregar o líquido que escorre para dentro dos rebaixadores periféricos e duas das quatro plataformas de transferência de massa são configuradas para descarregar o líquido que escorre para dentro do rebaixador central.

Method and system for cutting puzzle cut petals in belts

An apparatus and method for cutting belt material to accurate dimensions and for forming the mating edges of a puzzle cut joint for joining the ends of the belt material to form a continuous belt for use in a document processing application. The workpiece is maintained in accurate registration a punch press by optical sensors at each station. A vacuum pickup is constructed to move the belt material from a precision cutter to a punch press and maintains the material in tensioned condition to facilitate accurate operation of the punch press.

Annular divided wall column with ring shaped collectors and distributers

An annular divided wall column for the cryogenic rectification of air or constituents of air is provided. The annular divided wall column includes a first annular column wall and a second annular column wall disposed within the first annular column wall to define an annulus column region and an interior core column region. The present annular divided wall column further includes structured packing elements disposed within at least the annulus column region as well as a ring-shaped cantilevered collector; and a ring-shaped distributor disposed in the annulus column region above or below the plurality of structured packing elements. The thermal expansion and contraction of the second annular column wall in a radial direction and in an axial direction is independent of the thermal expansion and contraction of the first annular column wall in the radial and axial directions.

Annular divided wall column

An annular divided wall column is provided. The annular divided wall column includes a first annular column wall and a second annular column wall disposed within the first annular column wall and radially spaced therefrom to define an annulus column region as the space between the first annular column wall and the second annular column wall. An interior core column region is also defined by the interior space of the second annular column wall. The present annular divided wall column further includes a plurality of packing elements, disposed within the interior core column region within the annulus column region having different surface area densities and optionally, also have different geometries.

split-wall annular column for the cryogenic rectification of air or its constituents.

A presente invenção apresenta uma coluna anular de parede dividida para a retificação criogênica do ar ou de seus constituintes. A coluna anular de parede dividida inclui uma primeira parede de coluna anular e uma segunda parede de coluna anular disposta dentro da primeira parede de coluna anular para definir uma região de coluna de ânulo e uma região de coluna central interna. A presente coluna anular de parede dividida inclui adicionalmente elementos de empacotamento estruturado dispostos dentro de ao menos a região de coluna de ânulo, bem como um coletor circular fixo em cantilever; e um distribuidor circular disposto na região de coluna de ânulo acima ou abaixo da pluralidade de elementos de empacotamento estruturado. A expansão e contração térmica da segunda parede de coluna anular em uma direção radial e em uma direção axial independe da expansão e contração térmica da primeira parede de coluna anular nas direções radial e axial. The present invention features a split wall annular column for the cryogenic rectification of air or its constituents. The split-wall annular column includes a first annular column wall and a second annular column wall disposed within the first annular column wall to define an annular column region and an inner central column region. The present split-wall annular column additionally includes structured packaging elements arranged within at least the annular column region, as well as a fixed circular cantilever collector; and a circular dispenser arranged in the annular column region above or below the plurality of structured packaging elements. The expansion and thermal contraction of the second annular column wall in a radial direction and in an axial direction does not depend on the expansion and thermal contraction of the first annular column wall in the radial and axial directions.

Oligomeric coagulation aid and dispersion aid

A composition for dispersing multilayer polymers has an oligomer prepared from at least one alkyl (meth)acrylate monomer in the presence of a chain transfer agent. The oligomer has a number average molecular weight of less than 10,000 g/mol and a glass transition temperature, Tg, as measured by DSC, less than a coagulation temperature of a composition comprising the oligomer and a multilayer polymer, wherein the coagulation temperature is based on an average particle diameter of 200 microns. A composition containing the oligomer and a multilayer polymer, such as an acrylic core-shell polymer or methacrylate butadiene styrene core-shell polymer, and a resin composition are also disclosed.

Impact modification of styrenic polymers with polyolefin acrylic polymers

Disclosed is an impact modified resin comprises a matrix polymer resin and an impact modifier. The impact modifier comprises particles of a crosslinked polyolefin elastomer having one or more (meth)acrylic monomers grafted to the crosslinked polyolefin elastomer particles. The matrix polymer resin is a styrenic polymer.

Low molecular weight oligomeric coagulation aid and dispersion aid

A composition for dispersing multilayer polymers has an oligomer prepared from at least one alkyl (meth)acrylate monomer in the presence of a chain transfer agent. The oligomer has a number average molecular weight of less than 2,500 g/mol. A composition containing the oligomer and a multilayer polymer, such as an acrylic core-shell polymer or methacrylate butadiene styrene core-shell polymer, and a resin composition are also disclosed.

Oligomeric coagulation aid and dispersion aid

A composition for dispersing multilayer polymers has an oligomer prepared from at least one alkyl (meth)acrylate monomer in the presence of a chain transfer agent. The oligomer has a number average molecular weight of less than 10,000 g/mol and a glass transition temperature, T g , as measured by DSC, less than a coagulation temperature of a composition comprising the oligomer and a multilayer polymer, wherein the coagulation temperature is based on an average particle diameter of 200 microns. A composition containing the oligomer and a multilayer polymer, such as an acrylic core-shell polymer or methacrylate butadiene styrene core-shell polymer, and a resin composition are also disclosed.

Low molecular weight oligomeric coagulation aid and dispersion aid

A composition for dispersing multilayer polymers has an oligomer prepared from at least one alkyl (meth)acrylate monomer in the presence of a chain transfer agent. The oligomer has a number average molecular weight of less than 2,500 g/mol. A composition containing the oligomer and a multilayer polymer, such as an acrylic core-shell polymer or methacrylate butadiene styrene core-shell polymer, and a resin composition are also disclosed.

Wässrige Polymerdispersionen mit hohem Gehalt an ungesättigtem Fliesshilfsmittel

Aqueous polymer dispersions with high unsaturated flow promoter content

Airflow-confirming HVAC systems and methods with variable speed blower

Systems and methods involve controlling a variable-speed blower in a heating, ventilating, and air conditioning (HVAC) system to ensure the setting of a blower-proving switch to confirm airflow in a building. In one instance, a method involves ramping up the variable-speed blower so that the associated static pressure reaches a making point pressure of the blower-proving switch and then reducing the power to a desired power level. The method may also include maintaining the power level above a breaking point pressure. Other systems and methods are presented.

Combined collector and distributor

A combined collector and distributor for a distillation column that includes a collector portion connected to a distributor portion. The distributor portion includes a channel-like distributor to distribute liquid into an underlying packing. The collector portion has spaced rows of collection elements that cover the open spaces and distribution elements of the distributor portion and one or more rectangular sumps into which descending liquid drains from the collection elements. The liquid in turn drains from the rectangular sump or sumps into a pre-distribution box located within a header of the distributor portion. The collection elements that cover the open spaces are set at higher positions than the collection elements covering the distribution elements to form chimneys to allow the ascending vapor to escape from the collector portion.