Engineering Simulation And Optimization On Flame Adjustment Of 5000t/d Cerment Rotary Kiln

In the process of cement production, the new dry process cement production technology has become one of the world’s most widely used technology in China and the world’s advanced cement production. The new dry cement production is mainly about "two grinding burn" : "two grinding" is for raw mill and cement mill, and "One burning" is the burning of the clinker. Clinker burning is a production process step and a key link in the cement production for the connection of preparation for the raw meal and the cement. And the new dry process cement rotary kiln is an indispensable part and the most important production equipment of the burning process. The operation of rotary kiln is directly related to the quality of cement products. Therefore, how to maintain a good running of the rotary kiln of the production of cement is a very important significance.The operation of rotary kiln cannot do without the burners. The normal operation of the rotary kiln is closely related to the distribution of flame and the distribution of flame directly affects the temperature distribution in the kiln, while, the temperature in the kiln has a direct relationship with the quality of cement clinker and refractory materials. Because of the rotary kiln refractory material protection, the level of the temperature in the kiln directly affect the firebrick of damage degree, and the flame temperature of the kiln head is the main influence factors for the kiln temperature. Clinker burning quality and kiln head flame regulation also have a close relationship, so flame regulation plays a vital role in applying of the kiln refractory as well as its quality and quantity of clinker production.Considering the problems above, engineering simulation was applied for the operation of the rotary kiln flame during the combustion process. The effect of different air volume of the nozzles on flame distribution and the corresponding furnace running state under each condition was analyzed, as well as, the experiments on the quality and strength of the clinker under each condition were compared and analyzed. Analysis results shown that in the air volume adjusting range, only when the outer shaft wind is 310m/s and the inside tornado wind speed is 116m/s, the flame shape and the kiln inner temperature meet the production requirements, the cylinder temperature reaches the optimum state, and the compressive strength and the bending strength of the cement clinker corresponding to the condition is optimal. Through engineering simulation of rotary kiln in different air influence on the flame analysis, can establish a set of effective refractory brick protective measures, to extend the running time of the refractory brick, effectively reduce the rotary kiln shutdown times, ensure the kiln operation rate, and improve the quality of cement products. It has a very positive effect on reducing the cost of cement industry.