公开(公告)号：US20230146205A1

公开(公告)日：2023-05-11

申请号：US17981133

申请日：2022-11-04

申请人： UNIVERSITY OF UTAH RESEARCH FOUNDATION

发明人： Joshua R. Malzahn ,  Eric G. Eddings

IPC分类号： C10B53/07 ,  C10B57/00 ,  C10B57/02

CPC分类号： C10B53/07 ,  C10B57/005 ,  C10B57/02

摘要： Methods and systems for producing mesophasic (between liquid and solid phases) carbon materials from plastic waste. The method and system includes a 2-stage pyrolysis reactor, including first and second pyrolysis stages where a carbon feedstock material is subjected to pyrolysis. The first pyrolysis stage may subject the carbon feedstock material to pyrolysis at a first temperature in a range of 500° C. to 700° C., and the second pyrolysis stage may operate at a second temperature in a range of 800° C. to 1000° C., providing secondary gas phase reactions (SGR). A residence time of the carbon feedstock material in the reactor may be no more than 10 seconds. After pyrolysis and SGR, a sparging and thermal treatment stage may convert pyrolysis tar products to an anisotropic pitch product suitable for use in production of carbon fiber or bulk graphite for use in fabrication of graphite electrodes.