循环瓦斯饱和度对系统供热影响的研究

Study on Effect of Cycle Gas Saturation on the Heating Situation of System

气体热载体干馏工艺技术的传质和传热过程,是研究油页岩干馏工艺的两个重要课题,长期以来,对全负压干馏工艺技术和半负压干馏工艺技术的争论交点,主要集中在不同饱和度的热循环瓦斯,作为热载体对干馏系统的供热能力上,一种观点认为高饱和度的热循环瓦斯所携带的水蒸气多,水蒸气的比热较大,供热能力比低饱和度的热循环瓦斯更强。本文通过对相同体积(工况)不同饱和度的瓦斯所携带的热量进行了理论计算,得出了热循环瓦斯饱和度对生产系统供热的影响,为干馏工艺技术的控制与优化提供参考。

Mass transfer process and heat transfer process of gas heat carder retorting technology, are two important topics in the study of shale retorting process. The argument intersection between all negative pressure retorting process and half negative pressure retorting process is mainly focused on the heating ability of different saturation thermal cycle gas as heat carrier for retorting system, a kind of view is that thermal cycle gas with high saturation can carry more water vapor, water vapor heat capacity is big, heating power is greater than thermal cycling gas with low saturation. In this article, under the same condition, heat carrying capacities of gas with different saturation were theoretically calculated, effect of cycle gas saturation on the heating situation of system was determined, which could provide reference for the control and optimization of the retorting process.