中国HyperCoal清洁高值化应用研究现状与展望

Research status and prospect of clean and high-value utilization of HyperCoal in China

  • 摘要: 作为一个煤炭大国,煤炭在我国的能源结构中占据重要地位。然而,煤炭的过度使用不可避免的造成了环境污染和温室效应等问题。因此发展洁净煤技术是解决煤炭利用问题的重要方式,对于我国经济的可持续发展至关重要。HyperCoal(HPC)是通过溶剂萃取技术得到的一种煤衍生物,由于具有低灰、低水、高热值、高反应性、良好热塑性、环境友好等特性,在洁净煤技术中有着重要的应用。基于此,本文指出了目前我国对HPC的应用研究现状,并详细阐述了本研究团队在配煤炼焦和制备石墨电极领域的突破性研究进展。然而,目前HPC在推广和应用过程中还存在一些问题。在未来,还亟需解决HPC的规模化生产问题,并对HPC的萃取机理和作用机制开展更加深入的研究。

     

    Abstract: China is the world’s largest coal-producing country; coal is very important to Chinese energy structure. However, the excess use of coal has caused serious environmental pollution and the greenhouse effect. Therefore, an indispensable way to solve this coal utilization problem is the development of clean coal technology, which is also essential for the sustainable development of China’s economy. HyperCoal (HPC), a coal derivative obtained by solvent extraction with the properties of low ash content, low moisture, high calorific value, high reactivity, good thermoplasticity, and environmental friendliness, has excellent application in clean coal technology. In terms of combustion, HPC can be used as an advanced fuel for fuel cell and chemical cycle combustion for improving combustion efficiency. Regarding gasification and liquefaction, HPC can be used in the integrated coal gasification combined cycle technology to reduce catalyst loss and equipment damage. In terms of coking coal blending, HPC can be used as an additive in the coking process and a binder for hot-pressed coal briquettes, which can increase the strength of coke and replace scarce coking coal resources such as fat and main coking coals. In the preparation of high-grade carbon materials, HPC can be used to prepare the pitch-based carbon fiber, activated carbon, and graphite electrodes, which considerably improves the performance of carbon materials. Therefore, HPC is valuable in the clean and high-value utilization of coal. On this basis, this paper pointed out the current research status of HPC application in China and elaborated the breakthrough with considerable research results of our team concerning coking coal blending and the preparation of crystalline graphite. However, currently, there are still some problems in the spread and the application of HPC. In the future, large-scale production issues need to be urgently solved, and in-depth research on the extraction mechanism and the action mechanism of HPC should be conducted.

     

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