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Technical analysis of spiral steel pipe
DataTime:[2016-12-27]
Superior structural characteristics of spiral steel pipe determines its power, chemical, petroleum and nuclear industry and other fields increasingly widely used.
Spiral steel pipe technology in the heat, mix in many fields such as chemical is widely used to obtain good results. But the spiral technique in mass separation of the application up to now is still relatively small. In recent years, many people will spiral technology used in microfiltration, nanofiltration, osmotic membrane distillation and mass transfer of hollow fiber membrane separation process, have achieved good results. This is because the coil may be formed inside the pipe perpendicular to the axial direction of the tube of the secondary flow, which secondary flow and axial spiral mainstream combined into forward movement of such mass transfer layer of the fluid, which not only depend on the fluid The radial diffusion, as well as the role of the secondary flow radially, is equivalent to the boundary layer destruction, mass transfer surface profile. Enhances the movement of fluid in laminar flow mixing to enhance mass transfer. Spiral will also improve the outflow tube type, ie a flow-type shell. Increasing radial mixing liquid tube, shell reduce channeling and dead zone, and due to the proximity crossflow, the surface of the fiber mass constantly updated, the shell side mass transfer coefficient is further increased. Spiral universal superiority lies in this. But it is in many other aspects of the practical application of the special role.
Spiral steel pipe technology in the heat, mix in many fields such as chemical is widely used to obtain good results. But the spiral technique in mass separation of the application up to now is still relatively small. In recent years, many people will spiral technology used in microfiltration, nanofiltration, osmotic membrane distillation and mass transfer of hollow fiber membrane separation process, have achieved good results. This is because the coil may be formed inside the pipe perpendicular to the axial direction of the tube of the secondary flow, which secondary flow and axial spiral mainstream combined into forward movement of such mass transfer layer of the fluid, which not only depend on the fluid The radial diffusion, as well as the role of the secondary flow radially, is equivalent to the boundary layer destruction, mass transfer surface profile. Enhances the movement of fluid in laminar flow mixing to enhance mass transfer. Spiral will also improve the outflow tube type, ie a flow-type shell. Increasing radial mixing liquid tube, shell reduce channeling and dead zone, and due to the proximity crossflow, the surface of the fiber mass constantly updated, the shell side mass transfer coefficient is further increased. Spiral universal superiority lies in this. But it is in many other aspects of the practical application of the special role.
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