Likun process

The Likun Process (China) uses a two-stage cracking process under normal pressures where the waste plastics are first pyrolyzed at 350-400°C in the pyrolysis reactor and then the hot pyrolytic gases flow to a catalyst tower where they undergo catalytic reforming over zeolite at 300-380°C. By having the catalyst in the second stage this overcomes the problems of rapid catalyst deactivation from coke deposits on the surface of the catalyst. 

The Likun process [40] is another two-step cracking process operated under normal pressure. The process is shown in Figure 28.6. Waste PE, PP and PS are used as raw materials for oil recovery. In the first phase, the plastics are pyrolyzed at 350-400°C. In the second phase, the cracked gases undergo catalytic reforming over zeolite at 300-380°C. The... 

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