Leading Edge of Coal Utilization Technologies for Gasification and Cokemaking

Abstract

Coal is a very important resource for power generation and cokemaking. Moreover, coal is a very useful resource for producing city gas and chemical materials by gasification technology. Low grade coals are suitable for the coal gasification resources because they are easily decomposed and converted to generate gas in the gasifier. On the other hand, high quality coals such as good quality bituminous coals are required for producing metallurgical coke. Recently, the amount of high quality coals has been decreasing. The expansion of raw coal brands for producing metallurgical coke is very important. In this paper, the development of high energy efficiency gasification technology, ECORO ® , and new cokemaking technologies such as the DAPS and the SCOPE21 enabling the expansion of coal resources are introduced. These technologies are contributed to the expansion of coal resources and energy savings.

Recent Progress on Hydrogen-Rich Syngas Production from Coal Gasification

“…Currently, there are various gasification technologies, which can generally be divided into conventional and relatively new gasification technologies according to their development history [18]. Conventional gasification, e.g., fixed bed, fluidized bed, and entrained flow bed technologies, are technically mature, and they have achieved large-scale industrial applications [18,23]. To further improve energy conversion efficiency, obtain hydrogen-rich syngas, and reduce CO 2 emissions, a series of relatively new gasification technologies have been investigated, including supercritical water gasification, plasma gasification, chemicallooping gasification, and decoupling gasification [13,[24][25][26][27][28][29][30][31].…”

Effects of particle size on the flotation behavior of coal slime

“…Coal is the main energy source for power generation and coking in China (Kato and Matsueda, 2018), and it is also an important resource to promote the growth of the national economy (Chang et al, 2017). With the gradual depletion of high-quality coal resources, the demand for the washing of high-ash refractory coal is increasing (Ni et al, 2018).…”