Transformation and Applications of Nitrogen Sealing for Patchhole of Oxygen Lance of Converter
In this paper,the sealing device for patchhole of oxygen lance is redesigned based on the infinite space submerged turbulent jet theory and characteristic test of dominant frequency of oscillation for double-hole jet aiming at such phenomena as spill over of flue gas and flare-up often occurred at nitrogen sealing at oxygen lance of gasification cooling flue for converter. The new nitrogen sealing device adopts the design of seal chamber and double row of inclined holes are set on nitrogen seal seat as well as the aperture and angle of inclined hole are reasonably designed combining with theoretical calculations. It is applied on new 1# converter of Steel-making Plant of Baotou Steel,in which the phenomenon of"smoking"in process of converting at oxygen lance as well as the frequency of cleaning and changing nitrogen seal cap for operators are reduced so that recovery amount of coal gas is improved. The engineering applications show that the modi-fied sealing device is with such advantages as reasonable design,simple equipment and safe operations.
万方数据
维普
