Characteristics Of Pyrolysis And Co-pyrolysis Of Liushuhe Oil Shale And PVC

Along with the development, energy and environment are two serious problems. Oil shale is considered as the most potential unconventional oil and gas resource. PVC is one of the most widely used plastic products, and since the content of Cl, it’s hard to handle. The co-pyrolysis of oil shale and PVC can solve the energy shortage of oil shale as well as the pollution of waste plastics.Use TGA to analysis pyrolysis and co-pyrolysis of Liushuhe oil shale f and PVC. The results showed that the pyrolysis of oil shale have three sections:one is from room temperature to about 230℃, the weight loss of water; One is decomposition of organic matter between 230℃ to 600℃; The last is the pyrolysis of minerals above 600℃. From the TG curve we saw that during the pyrolysis of organic, the weight loss of oil shale was the most obvious, and it was more obvious when the temperature increases. It was the same with PVC. By calculate the kinetic of the organic, it showed that as the temperature increased, the activation energy increased. With the addition of PVC, the actual activation energy was higher than the theories one, it meant that the reaction is more violent.Use the fixed bed with quartz reactor to study the pyrolysis and co-pyrolysis, and measure the influence of pyrolysis temperature (460 to 580℃), thermostatic time (5-25min), carrier flow(0.06-0.2L/min) and PVC content(5-20%) in N2 atmosphere. The oil productivity increased before decrease as the temperature and thermostatic time increased, with the highest yield at 500℃ and 20min; While the carrier flow increases and the PVC amount decreases, the productivity decreases. The best situation for Liushuhe oil shale was 500℃,20min, carrier flow at 0.06L/min and addition of 20% PVC, thus the oil yield is 17.70%. The gas yield will increase as the temperature increases and the addition of PVC, the same law with the content of CH4, CO, C2H4 and C2H6. The carbocoal yield will decrease as the temperature increased, the proximate and ultimate analysis showed that the ash content will increase and volatile content will decrease as the temperature increased. In the same condition, the addition of PVC increased the ash content and decreased the volatile content, which showed that PVC suppressed the transfer of the pyrolysis species to the carbocoal.