桦甸油页岩和废轮胎的共热解反应行为及协同效应

为了提高油页岩热解制油的效率和半焦的利用价值，将桦甸油页岩和废轮胎共热解，采用热重分析仪和铝甑反应器考察共热解的失重行为、产物产率和组成性质，基于实验值和计算值的差异分析协同效应。结果表明，共热解可以促进挥发分的释放，500 ℃时实际失重量比计算值高，当废轮胎占比为80 % 时二者差值为2.86 %; 共热解过程存在“增油减水”效应，废轮胎占比为50 % 时实际油产率为32.91 %，比计算值高约1.5 %，实际水产率比计算值低1.20 % ~1.77 %，同时使热解油中大于350 ℃的重质组分含量升高; 废轮胎热解的半焦发热量达30.43 MJ/kg，热解气中C₁—C₄烃类含量更高，使共热解半焦和热解气的热值高于油页岩热解。

Reaction behaviors and synergistic effects for co-pyrolysis of Huadian oil shale and waste tire

In order to improve the efficiency of oil shale pyrolysis and the utilization value of semi-coke, this paper co-pyrolyzed Huadian oil shale and waste tire.The weight loss behavior, product yield and composition properties of co-pyrolysis were investigated by thermogravimetric analyzer and aluminum retort reactor.The synergistic effect was analyzed based on the difference between experimental and calculated values.The results show that co-pyrolysis can promote the release of volatile matter, the actual weight loss is higher than the calculated value at 500 ℃, and reaches the maximum value of 2.86 % when the proportion of waste tire is 80 %.The mixed pyrolysis of oil shale and waste tire has the effect of "increasing oil and reducing water".When the waste tire accounts for 50 %, the actual oil yield is 32.91 %, which is 1.5 % higher than the calculated value, and the actual water yield is 1.20 % to 1.77 % lower than the calculated value.Meanwhile, the content of heavy components with boiling point higher than 350 ℃ in the pyrolysis oil increases.There is higher yield of C₁~C₄ hydrocarbons from waste tire pyrolysis, and the calorific value of semi-coke is up to 30.43 MJ/kg.Co-pyrolysis can also improve the calorific value of pyrolysis gas and semi-coke.