Ash fusion behavior modification mechanisms of high-calcium coal by coal blending and its ash viscosity predication

Li，Fenghai1,2,4; Zhou，Meijie2; zhao，Wei3; Liu，Xuefei2; Yang，Ziqiang2; Fan，Hongli1; Han，Guopeng1; Li，Junguo4; Xu，Meiling1; Fang，Yitian5

2024-02-01

10.1016/j.energy.2023.129829

Energy   影响因子和分区

0360-5442

In this paper, the ash fusion temperature (AFT) modification of high calcium Huolinhe lignite (HLH) with the addition of high aluminum Datong coal (DTC) and their corresponding mechanisms were investigated by an AFT tester, X-ray diffractometer, Raman spectrometer, and FactSage software. The AFTs of HLH mixtures increased gradually with the increasing DTC mass ratio due to their corresponding decrease in the total basic oxide content of CaO, MgO, FeO, NaO, and KO. The formations and content increases of high melting-point minerals (anorthite, cordierite, and mullite), the gradual decrease in the ratios of no bridging-oxide bond/bridging-oxide bond (NBO/BO), and an increase in the R (R = (Q + Q)/(Q + Q)) value resulted in the increases in the AFT and ash viscosity. Considering the variations in the characteristics of AFT and ash viscosity, the 40.0–50.0 % DTC mass ratio might be suitable for HLH entrained-flow bed (EFB) gasification. The combination of AFT measurement and ash viscosity predication using FactSage provided a simple method to determine whether ash characteristics of coal were suitable for EFB gasification.

Ash behaviors Coal blending Modification mechanisms Viscosity predication

SCI ; EI

英语

通讯

ENGINEERING

2-s2.0-85178115637

Scopus

1.School of Chemistry and Chemical Engineering,Heze University,Heze,274015,China
2.College of Chemistry and Chemical Engineering,Henan Polytechnic University,Jiaozuo,454003,China
3.State Key Laboratory of High-efficiency Utilization of Coal and Green Chemical Engineering,College of Chemistry and Chemical Engineering,Ningxia University,Yinchuan,750021,China
4.School of Innovation and Entrepreneurship,Southern University of Science and Technology,Shenzhen,518055,China
5.Institute of Coal Chemistry,Chinese Academy of Sciences,Taiyuan,030001,China

Li，Fenghai,Zhou，Meijie,zhao，Wei,et al. Ash fusion behavior modification mechanisms of high-calcium coal by coal blending and its ash viscosity predication[J]. Energy,2024,288.

Li，Fenghai.,Zhou，Meijie.,zhao，Wei.,Liu，Xuefei.,Yang，Ziqiang.,...&Fang，Yitian.(2024).Ash fusion behavior modification mechanisms of high-calcium coal by coal blending and its ash viscosity predication.Energy,288.

Li，Fenghai,et al."Ash fusion behavior modification mechanisms of high-calcium coal by coal blending and its ash viscosity predication".Energy 288(2024).