| 摘要 |
The invention relates, mainly to the petroleum and chemical industries. The inventive spiral nozzle provided with an unlimited module and coil number is arranged in a pile (the transport unit or a process structural space volume) in a parallel direction with respect to each other and according to a dense pattern. The adjacent and successive spirals can be embodied in the form of similar or mixed rotation spirals. The successive spirals can be optionally embodied in such a way that they are not coaxial, limited by angle turns of end faces and have non-modifiable characteristics. The inventive arrangement allows a passing flow to freely react to the spiral swirling action and to create the opposite or parallel transitional motion of the flows between the parallel spirals, thereby increasing the flow turbulisation, promoting the stabilisation of dispersed particle sectional distribution and to optimise the selection of a packer structural design for a process particular conditions. The spiral picketing increases the efficiency of use thereof for mixing, heat exchange, reaction, transport and other devices. In addition, the possibility of producing a large-volume spiral nozzle extends the scope thereof for countercurrent processes, for example for rectification, absorption, spray cooling and extraction and for processes which are carried out in fluidised mass, including the classification of solid dispersed particles, associated with the increased efficiency of said processes. Said nozzle coated with substances exhibiting catalytic properties can be efficiently used for purifying exhaust gases by means of improved hydrodynamic properties. The nozzle is produced by shaping smooth, ragged, perforated and webbed sheets or by moulding, using materials such metals, plastics, glass and ceramics. In order to extend the list of materials, the invention proposes to use composite materials, for example materials provided with graphite filler. The production of the spiral nozzle layers by sheet shaping makes it possible to organise the mass production of the large range thereof. The piling of the spiral nozzle layers results from the parallel arrangement thereof. The sheet nature of the layers solves problems for producing transport and processing packets which can be configured by conventional sizing. |
