Heat integration with pyrolysis oil and a heat transfer medium for chemical facilities

A chemical recycling process, said process comprising:

• (a) providing a first heat transfer medium loop comprising a first heat transfer medium (HTM) and a second heat transfer medium loop comprising a second HTM, wherein the first heat transfer medium loop is disposed downstream of a liquification vessel and upstream of a pyrolysis reactor, and wherein the second heat transfer medium loop is disposed in the liquification vessel or upstream of the liquification vessel;
• (b) liquifying a solid waste plastic in the liquification vessel to thereby form a liquefied waste plastic, wherein the liquifying includes preheating at least a portion of the waste plastic via the second heat transfer medium loop using indirect heat exchange with a heated second HTM;
• (c) heating, via the first heat transfer medium loop, at least a portion of the liquefied waste plastic using indirect heat exchange with a heated first HTM to thereby provide a heated liquified waste plastic;
• (d) pyrolyzing at least a portion of the heated liquefied waste plastic in the a-pyrolysis reactor to thereby form a pyrolysis effluent;
• (e) separating at least a portion of the pyrolysis effluent to form a pyrolysis oil and a residual pyrolysis effluent comprising pyrolysis gas;
• (f) heating the first HTM and/or the second HTM to make the first heated HTM and/or the second heated HTM respectively, wherein the heating occurs within the first and/or second heat transfer medium loop via indirect heat exchange using heat energy from the pyrolysis effluent and/or the residual pyrolysis effluent;
• and
• (g) contacting at least a portion of the pyrolysis oil with the solid waste plastic in the liquification vessel.