煤与木屑共液化的动力学模型

基于煤与木屑以及高分子的中间产物和最终产物结构的不均匀性及煤与木屑中包含大量的顺序和平行反应的事实，提出一个模拟煤与木屑共液化的反应动力学模型。该模型认为煤与木屑共液化经历了以下过程；煤与木屑裂解生成沥青烯、前沥青烯和小分子的气态产物；沥青烯与前沥青烯进一步转化生成油，反应的活化能分别为59.8KJ/mol、43.7KJ/mol和84.0KJ/mol。其中，在一定的反应条件下煤与木屑以及沥青烯与前沥青烯均分为两部分；即可反应部分和不可反应部分，由此得到的理论值与实验值能够较好地吻合。

Kinetic Model for Coliquefaction of Coal and Sawdust

According to the inhomogeneity of reaction mass structure consisting of coal, biomass wastes, macro molecule intermediates and oil products as well as the complexity of the liquefaction process interwoven by a series of consecutive and parallel reactions, a kinetic model is put forward to simulate the process of coliquefaction of coal and biomass waste. Such a route for coliquefaction in this model is based on that coal and biomass is first, through thermal cracking, converted parallely to form preasphaltene, asphaltene and low molecule gaseous products and then consecutively oil is formed from preasphaltene and asphaltene. Activation energies for these three reactions are 59.8kJ/mol, 43.7kJ/mol and 84.0kJ/mol respectively. Under specific reaction conditions, coal, biomass, preasphaltene and asphaltene , each can be described in this model to be composed of two fractions, one of which is convertible, the other is unconvertible . Calculated values from this model agree with the experimental data fairly well.