Carbon number distribution pyrolysis products

Figure 6.22 Carbon number distribution of products of the catalytic cracking of oil obtained by the pyrolysis of PE. (Reproduced with permission from Elsevier)...

If the temperatures and pressures of the pressurized carbonization are not high enough, less solids will emerge and a high amount of liquid will be obtained [103]. With higher pressure, the carbon number distribution of products shifts to lower molecular weights. At lower temperatures, the co-pyrolysis of plastics has been shown to produce different products compared to when individual polymers... 

Table 26.9 shows the properties of pyrolysis oil and distilled oils. The pyrolysis oil is the fully condensed oil before distillation. The distillation characteristics of product oils are shown in Fignre 26.14. Figure 26.15 shows the carbon number distribution (NP gram) of the pyrolysis oil and distilled oils. Table 26.10 shows the standard specifications TS Z 0025, that will apply to the waste plastics pyrolysis oils in energy recovery applications, effective in 2005 in Japan. The analysis results shown in Table 26.9 indicate that all distilled oils satisfy the specifications of Table 26.10. 

Vacuum Pistillate Fractions. Pyrolysis of the saturate fraction for 30 minutes at 450°C gave the n-alkane and 1-alkene product distribution shown in Figure 3. This same data in tabulated form is compared in Table I with the starting material. The comparison indicates a net loss in concentration for the n-alkanes C16 and larger and a net gain for those with 14 or less carbons. The 1-alkenes exhibit a similar relationship with carbon number. For this pyrolysis time, the yield of small... 

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