摘要:
A vapor-liquid contact tray (18) and downcomer assembly (24) is provided with ramps (140) which serve to impart a horizontal directional flow to the liquid exiting the downcomer and/or the vapor passing through the tray. The downcomer includes a bottom plate (30) which closes the outlet region of the downcomer and includes a plurality of ramps which redirect the downwardly flowing liquid to include a horizontal component in the direction of liquid flow across the underlying tray. The downcomer receiving area in the underlying tray can include valves (58) having floating caps (60) which shield the associated openings (62) in the tray (18) against liquid weeping and redirect the vertical movement of the vapor streams to a generally horizontal momentum.
摘要:
Improved low NO x formation gas burner apparatus and method in which the burner apparatus includes a refractory burner tile (30) having a base portion (32) and a wall portion (34), the wall portion extending into the furnace, surrounding a central area (40) of the base portion and having external sides (43) which are slanted. Means (48) are attached to the burner tile for mixing a portion of the fuel gas with the air and discharging the resulting mixture into a primary burning zone in the furnace from within the space defined by the wall portion (34) of the burner tile. At least one secondary fuel gas nozzle (70) positioned for discharging the remaining portion of the fuel gas adjacent to an external slanted side (43) of the wall portion whereby the fuel gas mixes with flue gases and air in the furnace and burns in a secondary burning zone therein.
摘要:
Procédé et colonne (12) gas-liquide ayant une élimination améliorée du brouillard et des embruns, en particulier pour le traitement de fluides corrosifs, consistant à introduire directement un liquid e provenant d'un distributeur (22) de liquide reposant sur une couche supérieure de garniture (24) structurée dans un passage d'écoulement vertical de la garniture structurée pour obtenir le contact initial entre le gas et le liquide dans la couche supérieure de garniture structurée, réduisant ainsi le brouillard et l'atomisation, cette colonne et ce procédé étant particulièrement utiles lorsqu'on utilise des fluides corrosifs.
摘要:
O A vapour-liquid contact grid apparatus which maximises the generation of small drops consists of multiple layered grids, each grid being formed of upright grid elements (30) and connectors (20). The grid elements (30) have vanes (32, 34, 36, 38) formed from the member itself by a process of slitting and bending, which vanes extend out into the region between the upright grid elements to restrict vapour passage and provide drip points to increasing the effective surface area for gas-liquid exchange. A method of manufacture pro- videsforthe grid elements (30) to be formed in a die press and to be provided with slots alternatingly along their top and bottom edges to receive the edges of connectors (20) which support a plurality of the guide elements and form with the said elements a simple yet sturdy, grid. The vanes may be defined by serrated cuts extending longitudinally of the grid elements.
摘要:
A mist eliminator (10) for removing liquid droplets from a gas stream, which includes a plurality of impingement baffles (50), the baffles (50) having a profile including a short inlet section (52), a lower angled section (58), a short interconnecting section (60), an upper angled section (62), and a short outlet section (64), the length of the lower angled section (58) being longer than the upper angled section (62), the upper angled section (62) having a greater angular inclination than the lower angled section (58), thereby providing for a mist eliminator (10) for use in a gas-liquid contact column (12) of higher gas throughput, low pressure drop, moderate removal efficiency, and low manufacturing cost, which is easily cleaned, and particularly suitable for wet scrubbing processes.
摘要:
Improved gas burner apparatus and methods of burning fuel gas-air mixtures are provided whereby flue gases having low NO X contents are formed. The burner apparatus includes a refractory burner tile (30) having an air discharge opening (34) therein and a wall (36) surrounding the opening which extends into the furnace space and provides a mixing zone therein. At least one passage (54) is formed in the burner tile which opens into the mixing zone and fuel gas is jetted through the passage whereby flue gases are drawn therethrough and a fuel gas-flue gases mixture is discharged into the mixing zone. The fuel gas-flue gases mixture is swirled in the mixing zone and mixes with air therein, and the resulting mixture is discharged and burned in a primary reaction zone in the furnace space.
摘要:
A radiant gas burner which includes a refractory burner tile (12) having an elongate passageway (28) extending therethrough and a fuel-air mixture burner tube (34) disposed within the passageway. The burner tube is of a one-piece elongate construction, includes a nozzle portion (40,42) at the interior end of the passageway and is connected to a manifold block (38) by a threaded connection positioned adjacent the exterior end of the passageway. Secondary fuel is discharged from the passageway at a location (86,88) adjacent the nozzle portion of the burner tube.
摘要:
A reaction with distillation structure (11) comprising a plurality of distillation trays (12) and interconnecting catalyst containers (18, 118) which provide a catalytic reaction zone (32) and a primary flow path for descending liquid streams. Catalytic reaction of the liquid streams within the catalyst reaction zone (32) formed in the containers (18, 118) occurs concurrently with fractionation of the reaction products on the distillation trays (12). The containers (18, 118) preferably extend continuously through the reaction zone of the distillation reactor (11) to allow for dump loading and removal of the solid particulate catalyst (20). Structure (144, 146) may also be provided within the containers (18, 118) to influence system hydraulics through the accumulation of liquid within the catalyst bed (32). This is done by providing an open area (147) interiorly of the catalyst bed (32) into which liquid on the distillation and fractionation tray (12) is radially driven. This open area (147) communicates with a liquid accumulation zone (149) wherein liquid accumulates until a sufficient liquid head drives the liquid radially outward for further contact with the catalyst bed (32).
摘要:
A reaction with distillation structure (11) comprising a plurality of distillation trays (12) and interconnecting catalyst containers (18, 118) which provide a catalytic reaction zone (32) and a primary flow path for descending liquid streams. Catalytic reaction of the liquid streams within the catalyst reaction zone (32) formed in the containers (18, 118) occurs concurrently with fractionation of the reaction products on the distillation trays (12). The containers (18, 118) preferably extend continuously through the reaction zone of the distillation reactor (11) to allow for dump loading and removal of the solid particulate catalyst (20). Structure (144, 146) may also be provided within the containers (18, 118) to influence system hydraulics through the accumulation of liquid within the catalyst bed (32). This is done by providing an open area (147) interiorly of the catalyst bed (32) into which liquid on the distillation and fractionation tray (12) is radially driven. This open area (147) communicates with a liquid accumulation zone (149) wherein liquid accumulates until a sufficient liquid head drives the liquid radially outward for further contact with the catalyst bed (32).