We've sent you several references, one most recently from WVU, confirming that waste automotive tires, and, by extension, other rubber, plastic and polymeric wastes; some, such as natural latex, renewable and thus inherently carbon recycling, can enhance and improve the process of coal conversion into raw materials suitable for manufacturing liquid fuels and plastics.
Herein, from the University of Utah, is yet more documentation of that fact:
"An Effective Coal Liquefaction Solvent Obtained from the Vacuum Pyrolysis of Waste Rubber Tires
Edward C. Orr, Yanlong Shi, Qin Ji, Lian Shao, Melizza Villanueva, and Edward M. Eyring
[Unable to display image]Department of Chemistry, University of Utah, Salt Lake City, Utah 84112
Energy Fuels, 1996, 10 (3), pp 573–578
May 21, 1996
Copyright © 1996 American Chemical Society
Oil derived from vacuum pyrolysis of waste rubber tires was used as a coal liquefaction solvent with a high-volatile A bituminous coal and a Mo catalyst. The vacuum-pyrolyzed tire oil along with the Mo catalyst was found to convert over 90% (daf) of the coal to gas, oil, and asphaltenes. Reactions were carried out in tubing reactors heated to 430 °C under 1000 psig (cold) of hydrogen gas. The vacuum-pyrolyzed tire oil (PTO) obtained from waste rubber tires contained various polyaromatic molecules which have been shown to be beneficial in coal liquefaction. Coal conversion was found to be hydrogen pressure dependent for reactions where coal and PTO were coprocessed together. Conversion results show that most of the coal reacted within the first 10 min of coprocessing. Electron probe microanalysis (EPMA) detected the presence of Mo inside coal particles after 20 min of coprocessing coal and PTO."
So, again, it is confirmed that "tire oil" can help to convert "over 90%" of coal into what are, essentially, crude petroleum products. And, we'll submit that substances very similar to such "tire oil", which can be so "beneficial in coal liquefaction", can be extracted from other materials, as well, including various waste plastics and, again, botanical, carbon-recycling latex.