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一种基于碳循环的新型能源交换系统被认为是零CO2排放。这种能源系统被称为活性碳循环能源系统,简称ACRES。基于热力学对炼铁系统使用活性碳循环能源系统的可行性进行了讨论。活性碳循环能源系统包含三个部分,即CO2的回收、分离,以及从CO2中进行碳材料的再生和再生碳材料的使用。活性碳循环能源系统使用初级能源,不会释放CO2,这如同可再生能源和核能。在活性碳循环能源系统中含碳物质作为能源载体,并被重复循环使用。与使用氢能源系统相比,活性碳循环能源系统在热力学方面是可行的。CO的能量密度高于氢气,而且CO与传统炼铁工艺具有较高的兼容性。因此,在活性碳循环能源系统中,CO是适宜的循环介质。用碳作为介质的活性碳循环能源系统其可行性是基于热焓分析来评估的。CO的有效再生是建立活性碳循环能源系统的一个关键技术。评价了基于CO2氢化而获得CO再生方法的能源平衡,该再生过程需要超过800℃的热量输入。高温过程产生的800℃左右的剩余热量可用于反应。高温气体冷却反应堆可作为一种备用的初级能源。探讨了用氢还原CO2的活性碳循环能源系统在炼铁系统中应用的可行性。活性碳循环能源系统有望成为新型低CO2排放炼铁工艺的基础。
A new type of energy exchange system based on carbon cycling is considered as zero CO2 emissions. This energy system is known as activated carbon cycle energy system, referred to as ACRES. The feasibility of using activated carbon circulating energy system in ironmaking system based on thermodynamics is discussed. Activated carbon cycle energy system consists of three parts, namely the recovery of CO2, separation, as well as from carbon dioxide regeneration of carbon materials and the use of recycled carbon materials. The activated carbon cycle energy system uses primary energy and does not release CO2, which is like renewable energy and nuclear energy. In activated carbon cycle energy system carbon material as an energy carrier, and was recycled. Compared with the use of hydrogen energy system, activated carbon cycle energy system is feasible in terms of thermodynamics. The energy density of CO is higher than that of hydrogen, and CO has higher compatibility with the traditional ironmaking process. Therefore, in activated carbon cycle energy system, CO is a suitable circulating medium. The viability of an activated carbon cycle energy system using carbon as a medium is evaluated on the basis of enthalpy analysis. The effective regeneration of CO is a key technology for establishing an activated carbon cycle energy system. The energy balance obtained on the basis of CO 2 hydrogenation to obtain a CO regeneration method was evaluated and the regeneration process required heat input exceeding 800 ° C. The remaining heat of about 800 ° C produced by the high temperature process can be used for the reaction. High-temperature gas-cooled reactors can be used as a backup primary energy source. The feasibility of using activated carbon cycle energy system to reduce CO2 with hydrogen in ironmaking system was discussed. The activated carbon cycle energy system is expected to be the basis for a new type of low CO2 emission ironmaking process.