摘要:
A spray nozzle manifold comprising a first co-axial passage for supply of an atomization gas, a second co-axial passage present in said first passage for supply of a liquid, more than one laterally spaced nozzle for atomization and spraying liquid in a direction away from the longitudinal axis of the manifold attached to the first passage, said nozzles having an inlet for liquid fluidly connected to said second passage, an inlet for atomization gas fluidly connected to the first passage, a mixing chamber wherein atomization gas and liquid mix and an outlet for a mixture of atomization gas and liquid, wherein the nozzle has an opening for discharge of atomization gas which opening is in fluid communication with the first passage at a position upstream of the mixing chamber and wherein a shield is fixed to the first passage surrounding the nozzle.
摘要:
Waste heat boiler (1) being an elongated vessel comprising a co-axial positioned tubular channel (4) for hot gas, said channel further being provided with an inlet (11) for hot gas and an outlet for cooled gas, wherein a gas pathway (6) is defined between said inlet and outlet of said tubular channel and wherein in the gas pathway one or more bundles of tubular cooling surfaces are present, said tubular cooling surfaces (7) positioned co-axial with the channel, wherein the tubular channel is closed at one end (8), thereby forming a gas reversal chamber (9), and wherein the gas inlet is an opening in the wall of the tubular channel positioned between the gas reversal chamber and the gas pathway, wherein the inlet for hot gas is connected to an inlet conduit (11), which conduit is positioned under an angle α with said tubular channel and wherein at the hot gas inlet in the tubular channel a diverter plate (12) is present.
摘要:
Gasification reactor vessel, comprising a combustion chamber in the upper half of the vessel, provided with a product gas outlet at the bottom end of the combustion chamber, a burner positioned such that, in use, it fires into the combustion chamber, said burner provided with at least supply conduits for an oxidiser gas and a carbonaceous feed, wherein between the wall of the combustion chamber and the wall of vessel an annular space is provided, and wherein the wall of the combustion chamber comprises an arrangement of interconnected tubes (vertical arranged or helical coiled), and wherein two burner openings are present in the wall of the combustion chamber, which burner openings are located at the same horizontal level and are positioned diametrical relative to each other and wherein in the burner opening a burner is present.
摘要:
A gasification reactor comprising a pressure shell, a reaction zone partly bounded by a vertically oriented tubular membrane wall, a horizontally directed burner having a burner head at which, in use, a combustion flame is discharged into said reaction zone, said burner protruding into the vertical wall part of the membrane wall via a burner muffle, said burner muffle comprising several vertically oriented, concentric and interconnected rings, wherein each successive ring has an increasing diameter relative to the preceding ring resulting in that the burner muffle has a muffle opening for the burner head at one end and a larger opening at its other—flame discharge—end, the rings comprising a conduit having an inlet end for a cooling medium and an outlet for used cooling medium and wherein the muffle opening for the burner head is located between the pressure shell and the membrane wall and wherein the burner muffle protrudes into the reaction zone.
摘要:
A method and a rapper device for cleaning a heat exchange surface in a pressure vessel. The rapper device includes a striker rod which has one end contacting the heat exchange surface in the pressure vessel and one end projecting out of the pressure vessel via a passage opening. The rapper device also includes an impacting device for impacting the projecting end of the striker rod. A section of the striker rod is slideably supported in a pressure chamber adjacent the passage opening. The pressure chamber is connected to a sealing gas supply maintaining the pressure in the pressure chamber at a higher level than the pressure in the pressure vessel. A bellows defines a pressure chamber around at least a section of the striker rod.
摘要:
A gasification reactor (1) and a process for the production of syngas by gasification of a carbonaceous feed. The reactor comprises a gasifier unit with a discharge channel (4) for discharging a stream of slag-loaded hot syngas and a quencher (5) for supplying a flow of quench gas into the discharge channel (4). At least one blaster (10) is arranged comprising at least one blast nozzle (12), such as a blast lance, in line with the flow direction of the quench gas. The blaster (10) can be connected to a source of pressurized gas, such as syngas, nitrogen, carbon dioxide, steam or the like. The blaster can be actuated periodically to blast away slag deposits.
摘要:
A heat exchange device comprising at least one heat exchange surface (2), wherein the heat exchange surface comprises one or more parallel tubular lines (3), a rapper device and an impact area for the rapper device. The impact area comprises an impact block (6) with one or more inner channels (7) through which coolant flows bridging opposite open ends (5) of an interrupted tubular line of the heat exchange surface. The impact block (6) enforces the impact area of the heat exchange surface and translates impact energy caused by a rapper device very effectively into mechanical waves through the heating surface, resulting in an improved cleaning effect.
摘要:
A quenching vessel being, in use, vertically elongated and provided with an inlet for gas at its upper end, an outlet for cooled gas at its lower end defining a pathway for a gas flow directed downwardly, the vessel being provided at its upper end with a first internal tubular wall part which wall part has an opening fluidly connected to the inlet for gas and wherein the tubular wall part is connected at its lower end with a divergent conical part having walls which are inclined outwardly in the direction of the pathway for gas, wherein an arrangement of more than one nozzle for atomisation and spraying a liquid quench medium in a downward direction into the pathway for the gas flow are present in the space enclosed by the divergent conical part.
摘要:
A flame retardant polymer fiber, a process for making such a fiber, and a material containing such fibers are provided. The flame retardant polymer fiber is a high tenacity fiber formed of a poly(trimethylene terephthalate) co-polymer containing a trimethylene terephthalate monomer and a phosphorous containing flame retardant monomer. The flame retardant PTT co-polymer fiber is produced by a process in which the trimethylene terephthalate monomer or its precursors and the phosphorous containing flame retardant monomer or its precursors are combined to form the PTT co-polymer in one or more pre-polymerization and polymerization steps, and the PTT co-polymer is spun into a fiber. Materials including such flame retardant PTT co-polymer fibers, e.g. carpets and textiles, are also provided.
摘要:
A gasification reactor comprising a vessel (1), provided at its upper end with a downwardly directed burner (2), and provided with supply conduits for an oxidizer gas (3), a carbonaceous feed (4) and a moderator gas (5), a combustion chamber (6) in the upper half of the vessel provided with a product gas outlet (7) at its bottom end and an opening for the outlet of the burner (2) at its top end, wherein between the wall of the combustion chamber (6) and the wall of the vessel (1) an annular space (9) is provided, and wherein the wall of the combustion chamber (6) comprises an arrangement of interconnected parallel arranged tubes (10) resulting in a substantially gas-tight wall running from a common lower arranged distributor (12) to a higher arranged common header (11), said distributor (12) provided with a cooling water supply conduit (14) and said header (11) provided with a steam discharge conduit (13) and wherein the steam discharge conduit (13) and the water supply conduit (14) are fluidly connected to a steam drum (29) and wherein the steam drum (29) is provided with a supply conduit (32) for fresh water and wherein the steam drum (29) is positioned at a higher elevation than the common header (11).