NUMERICAL SIMULATION OF UNDERGROUND COAL GASIFICATION USING THE CRIP METHOD
煤炭是一种化石燃料，目前提供了世界总能源需求的四分之一，要么直接用作熔炉中的燃料，要么被气化为可燃气体的混合物。目前大多数可用于煤气化的技术都使用表面反应器。本文采用控制回缩注入点技术（CRIP）对地下煤气化过程进行了数值模拟。地下煤气化炉是地表煤气化炉的替代品，无需采矿，可用于深层、不可开采的煤层。本文包括从热量和质量传输的角度对UCG过程进行三维模拟的研究。利用CRIP技术对煤层燃烧过程中的化学动力学进行了研究。目的是提供一种使用综合多孔介质流动方法的模拟方法，以了解UCG过程的重要方面。
Abstract
Coal, a fossil fuel, currently provides one-fourth of the total energy demand of the world that is either used directly as a fuel in furnaces or is gasified to a mixture of flammable gases. Most of the currently available technologies for coal gasification use a surface reactor. This paper presents the numerical simulation of underground coal gasification (UCG) using the controlled retraction injection point technique (CRIP) method. The underground coal gasifier is an alternative to surface gasifiers that eliminates the need for mining and can be used in deep, unminable coal seams. The paper includes the study of a 3-dimensional simulation of the UCG process in terms of heat and mass transport. Chemical kinetics in a coal seam during coal combustion were also studied using the CRIP technique. The aim was to provide a simulation methodology using a comprehensive porous media flow approach in order to understand the vital aspects of the UCG process.
