Method for removing chlorine from pyrolysis process of waste plastic
AssigneesSK Innovation Co., Ltd., SK Geo Centric Co., Ltd.
InventorsSanghwan Jo, Sookil Kang, Sangick Lee, Jaeheum Jung
Life of this patent
Estimating the term…
Abstract
Provided is a method for removing chlorine from a waste plastic. The method includes a) reacting a waste plastic with a neutralizing agent; and b) reacting the product of step a) with a copper compound. 95% by weight or more of chlorine is removed based on the total weight of the waste plastic.
Claims15
A method for removing chlorine from a waste plastic, the method comprising a pretreatment step of the waste plastic and a pyrolysis step of the waste plastic to produce a waste plastic pyrolysis oil, wherein steps a) and b) as follows are independently performed in at least one step selected from the pretreatment step and the pyrolysis step:
- a) reacting the waste plastic with a neutralizing agent;
- and
- b) reacting the product in step a) with a copper compound,
- wherein 95% by weight or more of chlorine is removed based on the total weight of the waste plastic.
A method for removing chlorine from a waste plastic, the method comprising a pretreatment step of a waste plastic as a recycled feed and a pyrolysis step of the waste plastic as the recycled feed to produce a waste plastic pyrolysis oil, wherein steps a) and b) as follows are independently performed in at least one step selected from the pretreatment step and the pyrolysis step:
- a) reacting the waste plastic as the recycled feed with a neutralizing agent;
- and
- b) reacting the product in step a) with a copper compound,
- wherein 95% by weight or more of chlorine is removed based on the total weight of the waste plastic.
Dependencies are inferred from the claim text.