Simulation Research On Patching Coke Oven Based On FLUENT

The coke oven gunning lengthens the coke oven life in many kinds of technology to be the most economical and suitable one. At present, the most widely used technology is the semi-dry gunning techniques. However, in the process of gunning, gunning coke oven equipment will leak air because the sealing surface wear, which diffuse gunning dust in the air, thus the environment and operated worker's health have the very big threat. In order to solve this problem, it is necessary to make the essential improvement for the present widespread used gunning machine.The new idea is installing a suction feeder gunning in the discharge hole of gunning machine, using compressed air nozzles arising out adsorption jet, so that in the powder hopper was being sucked into a vacuum nozzle condition and sent to the spray gun. This approach has been to eliminate the possibility of blowing dust, because of the sealing surface does not involve the issue of greater wear and increase service life of machine gunning.This paper applied FLUENT to carry on the numerical simulation and the simulation analysis to the compressed air spray nozzle spraying flow field. Modeling and simulation by optimizing the internal structure of the nozzle to study high-pressure air nozzle parameters on the spray nozzle of the impact and changes of the fluid. Specific studies are as follows:(1)The idea of the new dustless gunning machine's structure is formed. In view of the active duty semi-dry process for gunning machine pollute environment and harm worker's health. The author installs the injection suction feeder underneath the outlet. And high-pressure air from the air intake under the feeder to attract on the suction nozzle. Using high pressure air jet adsorption gunning material so that the attraction of negative pressure into the injection suction feeder. Make dustless gunning possible.(2) Use GAMBIT as a pre-processing software to establish the nozzle internal flow field of three-dimensional model. Use FLUENT for high-pressure air nozzle internal flow field in the simulation analysis. Analysis of the nozzle shape and size parameters on the nozzle internal flow field.(3) High-pressure air nozzle to spray the outside of the simulation process. Analysis of injection pressure and speed the process of change. Analysis of the nozzle jet flow field characteristics of the jet.(4) Through the pressure of the nozzle jet flow field velocity map and comparative analysis to study the injection pressure of the flow field characteristics were studied in ambient air at the same time the movement of media to find a different inlet pressure in the nozzle under the conditions of jet formation the greatest negative value.(5) Through the simulation, calculated pressure 0.2MPa, 0.3MPa, 0.4MPa, 0.5MPa four cases, the nozzle pressure and the nozzle away from the mouth the relationship between the curve. These relationships show that: the greater the pressure of injection, then the largest value the smaller the negative pressure, and the greater the distance between the nozzle mouth.(6) In this paper, Gunning measured resistance is expected to decline in 0.012MPa, according to simulation analysis, suction feeder gunning to meet the requirements only for some regions. This article find the distribution of the region.