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With the development of society , more and more cars a year will generate a lot of waste tires ; increasing traffic , increasing performance requirements on the use of asphalt pavement . If these waste tire rubber is cut into pieces , made ??of rubber asphalt mixture added to the asphalt , the asphalt road can significantly improve performance , and to solve the problem of waste tire processing . Production of rubber asphalt base asphalt heating temperature higher than ordinary asphalt mixes and SBS modified asphalt mix asphalt heating temperature project for asphalt heating equipment can not be in a short time the asphalt heated to process requirements temperature and energy consumption , fuel utilization is low, leading to an extension of time and huge economic losses . Furthermore , the rubber asphalt production equipment is no uniform standard , can not guarantee the quality of the rubber asphalt products . In view of the above reasons , the article compares the advantages and disadvantages of the different asphalt heating method , pointed out that currently works in the asphalt heating equipment can not be achieved through research and analysis , Asphalt rapid warming , due to the use of natural convection , overall , static heating asphalt . For this , we propose the use of thermal oil as the heat transfer medium , using forced convection , partial, the dynamic heating asphalt thought , designed spiral heat asphalt heating equipment , a heat transfer model deduced . Then using CFD software FLUENT to simulate the heat transfer process of the spiral heat asphalt heating equipment . The results show that the spiral plate asphalt heating equipment can be realized asphalt uniform, fast heating purposes . Simultaneous analysis of the fluid flow rate , flow patterns and the channel width of the asphalt heating equipment, spiral plate heat transfer effect . Finally , rubber asphalt production process , Siemens S7-200 PLC as controller using series Siemens PLC the programming software STEP7-Micro/WIN4.0 write of rubber asphalt automatic production control system program .
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