论文部分内容阅读
循环浆态床结合了浆态床良好的传热性能和气流床高效的传质性能。今对循环浆态床内气液传质系数和固体浓度分布进行了考察,结果表明随着循环流量的增大容积传质系数也增大,在相同循环量的情况下气量越大容积传质系数也越大,并且由于催化剂浆料在反应器内循环,因此当循环量在200 L·h-1、气量在2 L·min-1以上的情况下,整个床层的固体浓度分布已接近初始固含率。同时对循环浆态床反应器羟基合成反应工艺条件进行了考察,结果表明温度在240～260℃催化剂具有较好的活性,而反应压力的升高,气体流量的增加和浆料循环流量的增加都有利于羟基合成反应的进行。
The circulating slurry bed combines the good heat transfer performance of the slurry bed with the efficient mass transfer performance of the fluidized bed. The investigation of the gas-liquid mass transfer coefficient and solid concentration distribution in a circulating slurry bed shows that the volumetric mass transfer coefficient increases with the increase of the circulating flow rate, and the volumetric mass transfer The larger the coefficient is, and because the catalyst slurry circulates in the reactor, the solid concentration distribution of the entire bed is close to 200 L · h-1 when the circulation volume is 2 L · min-1 or more Initial solid content. At the same time, the technological conditions of the synthesis of hydroxyl in the recycle slurry bed reactor were investigated. The results show that the catalyst has good activity at 240 ~ 260 ℃, and the reaction pressure increases, the gas flow rate increases and the slurry circulation flow rate increases Are conducive to the progress of hydroxyl synthesis reaction.