The Optimum Design And Experimental Research On The Rotary Gas-solid Heat Exchange Device

Blast furnace slag is the main by-product during the process of steel production. Itcontains rich resources of high-grade sensible heat.Based on this, this paper develops aset of rotary gas solid heat exchanger, with the cold air as a heat exchangemedium, and high temperature slag particles, to make high temperature hot airfor providing the blast. In order to further optimize the results, improve the efficiencyof heat transfer device,I make the oretical analysis, numerical simulation andExperimental Research, and design the key structure dimensions of the device。At last Igain the movement rule of slag particles in the interior, the best conditionof slagparticles in the heat exchanger to discrete state.For the particle size in the rangeof1.5mm~2.5mm, when rotational speed is9rpm,15rpm，21rpm， and the windspeed reached6.53m/s，4.31m/s，2.13m/s，the particles reach into the discrete state. Butit is better when the speed in the15rpm and wind speed is4.31m/s.In this paper, maked the three-dimensional model withthree-dimensional software ProE, carried out numerical analysis aboutthe concentration distribution and the temperature distribution with finite elementanalysis software FLUENT，last getted the optimum operating condition. we can getthe hot air temperature about1050K,when rotating speed of15rpm, air volume is4.31m/s.In Qinggang group4#blast furnace，I maked the test research and validatedthe key parameters affecting the efficiency of heat transfer by experiment. We getthe basically consistentresults between the experimental data andnumerical simulation.