Mechanism and engineering technology development of hydrocarbons pyrolysis to produce carbon black
Introduction to the history of human manufacturing and utilization of carbon black(CB)as well as the characteristics of CB,this paper simulated and calculated a series of parameters related to the formation of quasi graphite microcrystals(GMCs)and the final formation of CB particles during the process of hydrocarbon pyrolysis,where carbon atoms formed a six carbon ring and undergo one-dimensional(1D),two-dimensional(2D)and three-dimensional(3D)growth.The latest achievements for the growth mechanism of quasi graphite microcrystals in CB and basic research on particle structure as well as its relationship with properties such as particle hardness and conductivity were introduced.Based on the research results of carbon atomic structure and basic physicochemical properties in CB,the molecular formula of CB was proposed.The structural reasons why CB had a hardness of up to 30GPa,the activity of reinforcing rubber and unique conductivity were interpreted based on testing data.This article also calculated the chemical reaction heat of several typical hydrocarbons used to produce CB through thermal cracking from the perspective of bond energy changes.It explained the reason why the yield of coal-based feedstock oil was 10％higher than that of petroleum based-feedstock oil during CB production.The article focused on introducing the engineering technology of modern hydrocarbons pyrolysis to produce CB in terms of raw materials,reactors,refractory materials,large-scale equipment,comprehensive resource utilization technology with equipment achieved and the development process of China becoming the largest country in CB manufacturing.This article summarized the latest requirements for energy conservation and environmental protection in the CB industry,looked forward to the future of the industry,and put forward suggestions for the key directions and research content of its technological progress.
万方数据
维普
