Device and method for preparing pyrolysis oil by pyrolysis catalytic debromination of brominated flame retardant waste plastics
A technology of brominated flame retardancy and pyrolysis catalysis, which is applied in the direction of chemical instruments and methods, separation methods, refined hydrocarbon oil, etc., can solve the problem that the quality of pyrolysis oil cannot be further improved, bromine cannot be effectively removed, and there is no system Issues such as waste plastic raw material recycling and processing technology are given to achieve the effect of realizing waste resource utilization, avoiding secondary pollution, and economically beneficial resource utilization technology requirements
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Embodiment 1
[0066] Flame-retardant waste plastics were selected as the TV casing, the temperature of the fluidized bed reaction tower was 450°C, and the flow rate of the carrier gas was 5L / min. The reaction temperature in the catalytic debromination reactor is 150°C, and the constant temperature is 30 minutes. The added catalyst is HZSM-5 molecular sieve supported by iron (ie HZSM-5 molecular sieve supported by iron element). The concentration of the catalyst in the catalytic debromination reaction system is 0.01g / ml.
[0067] Table 1 shows the yields of various oils obtained in Example 1 and the content of bromine element in pyrolysis oils of various levels.
[0068] The content (wt %) of the bromine element (wt %) in the oil yield of pyrolysis oil of various stages and pyrolysis oil of various stages in table 1 embodiment 1
[0069] primary oil yield
Embodiment 2
[0071] Flame-retardant waste plastics were selected as the TV casing, the temperature of the fluidized bed reaction tower was 500°C, and the flow rate of the carrier gas was 5L / min. The reaction temperature in the catalytic debromination reactor was 200° C., and the temperature was kept constant for 30 minutes. The added catalyst was iron-based supported HZSM-5 molecular sieve, and the catalyst concentration was 0.01 g / ml.
[0072] Table 2 shows the yields of various levels of oil obtained in Example 2 and the content of bromine element in each level of pyrolysis oil.
[0073] The content of bromine element (wt %) in the oil yield of pyrolysis oil of various stages and pyrolysis oil of various stages in table 2 embodiment 2
[0074] primary oil yield
Embodiment 3
[0076] Flame-retardant waste plastics were selected as the TV casing, the temperature of the fluidized bed reaction tower was 500°C, and the flow rate of the carrier gas was 10L / min. The reaction temperature in the catalytic debromination reactor was 200° C., and the temperature was kept constant for 30 minutes. The added catalyst was iron-based supported HZSM-5 molecular sieve, and the catalyst concentration was 0.1 g / ml.
[0077] Table 3 shows the yields of various oils obtained in Example 3 and the content of bromine element in pyrolysis oils of various levels.
[0078] The content of bromine element (wt %) in the oil yield of each level of pyrolysis oil and each level of pyrolysis oil in table 3 embodiment 3
[0079] primary oil yield
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