Coal tar hydrogenation process and its research progress
Based on the analysis of the characteristics of coal tar,the purpose and characteristics of coal tar hydrogenation were introduced.The differences between coal tar hydrogenation and petroleum distillate hydrogenation were compared,and the characteristics and research progress of coal tar fixed-bed hydrogenation technology,delayed coking-hydrocracking technology and suspension bed hydrogenation technology were described in detail.The above three hydrogenation technologies were compared.It was concluded that the suspension bed hydrogenation technology could process full distilled coal tar and realize the long-term operation of the plant.The hydrogenation products had high yield,good quality and better economic benefits.
coal tarfixed-bed hydrogenation technologydelayed coking-hydrocracking technologysuspension bed hydrogenation technology