硬质道路沥青的不同制备技术

发布时间：2018-04-20 01:23

  本文选题：硬质道路沥青 + 减压蒸馏　； 参考：《化工进展》2017年12期

【摘要】：以伊朗重质渣油为原料,对其采用减压深拔、溶剂脱沥青、溶剂脱沥青+调和组合工艺制备30#硬质道路沥青可行性进行考察。结果表明,减压深拔和溶剂脱沥青+调和工艺用来制备硬质道路沥青较为适宜。采用减压蒸馏工艺较为简单,适当提高蒸馏深度即可制备满足GB/T 15180—2010技术要求的30#硬质道路沥青,轻馏分油收率可增加8.1%;单独采用溶剂脱沥青工艺制备30#硬质沥青,尽管能制备出满足指标的30~#硬质沥青,但脱沥青油收率较低,仅为6.6%~16.0%,经济效益较差;采用溶剂脱沥青+渣油(高标号沥青)调和工艺,可以制备出高低温性能较优的30~#硬质沥青,适宜的操作条件为:丁烷为溶剂,抽提塔塔温度107℃,抽提压力3.8MPa,剂油质量比为2.9,此时脱沥青油收率为41.2%,残炭小于8%,金属含量小于30μg/g,满足催化裂化进料要求;硬质脱油沥青软化点为105.4℃,针入度为0,适宜的调和软组分选择春风渣油和90~#沥青。沥青混合料试验表明,相比70~#A级道路沥青,30~#硬质沥青混合料具有良好的抗车辙性能和水稳定性能,基本能够达到改性沥青的效果,可将其用于沥青路面的中下面层提高路面的抗车辙能力。
[Abstract]:Using Iranian heavy residuum as raw material, the feasibility of preparing 30# hard road asphalt by vacuum deep drawing, solvent deasphalting, solvent deasphalting and blending process was investigated. The results show that it is suitable to prepare hard road asphalt by vacuum deep drawing and solvent deasphalting. The vacuum distillation process is relatively simple, the 30# hard road asphalt can be prepared by properly increasing the distillation depth, and the yield of light distillate oil can be increased by 8.1%, and the 30# hard asphalt can be prepared by using solvent deasphalting process alone, which meets the technical requirements of GB/T 15180-2010. Although 30 # hard asphalt can be prepared, the yield of deasphalted oil is relatively low, which is only 6.6% 16.0, and the economic benefit is poor. The solvent deasphalting residuum (high grade asphalt) blending process is adopted. The high and low temperature high and low temperature high temperature performance 30 # hard asphalt can be prepared. The suitable operating conditions are as follows: butane as solvent, extraction tower temperature 107 鈩，

本文编号：1775614