Study on the rheology of coal-oil slurries during heating at high pressure
Bingfeng Yan
摘要：Using the self-developed viscosity measuring device,the viscosity variations of coal-oil slurries with temperature increasing during coal-oil co-processing were studied.The results show that the viscosity of coal-oil slurries prepared by different kinds of oil varies differently during heating.The viscosity of the coal-oil slurry prepared by the catalytic cracking slurry (FCC) generally decreases during heating.However,the viscosity of the coal-oil slurry prepared by the high-temperature coal tar (CT) will peak at 338 ℃ during heating.The differences in viscosity variations of coal-oil slurries are analyzed.In addition to the temperature,the properties of the solvents and coal are the main influencing factors.Because the used coal contains a large number of polar functional groups,the swelling behavior of the coal in polar solvent (CT) is stronger than that in non-polar solvent (FCC).The swelling effect of the coal can result in the appearance of the viscosity peak.Therefore,before 100 ℃,the solvent molecules entering into the coal pores is the main influencing factor of coal-oil slurries viscosity variations.After 100 ℃,the increasing of particle size of coal particles is the main influencing factor of coal-oil slurries viscosity variations.
机标关键词：influencing factorscatalytic crackingswelling behaviorfunctional groupscoal particlesparticle sizecoal tar
资助基金：the International S&T Cooperation Program(2013DFA61660)the Technology Innovation Fund of CCRI(2016CX01)
论文发表日期：2017-01-01
在线出版日期：2025-08-15（本平台首次上网日期，不代表文献的发表时间）
页数：7( 274-280 )
英文信息