Abstract: The present disclosure relates to a method of refining waste plastic pyrolysis oil, the method including the steps of: S1) pyrolyzing waste plastics to produce pyrolysis oil; S2) separating monomers from a depolymerization product recovered by depolymerizing polyethylene terephthalate (PET) with alcohol and adding a remaining depolymerization residue to the pyrolysis oil; S3) mixing the depolymerization residue with the pyrolysis oil to produce refined pyrolysis oil; and S4) separating the refined pyrolysis oil and the depolymerization residue. The refined pyrolysis oil may have a reduced content of impurities, such as nitrogen. Also provided is a method of removing nitrogen in pyrolysis oil by mixing, with pyrolysis oil, a residue generated during a recycling process of polyethylene terephthalate (PET), which should be disposed of as waste, and exhibits an effect of significantly reducing a content of nitrogen in pyrolysis oil.

Abstract: A method and associated system for producing refined hydrocarbons from waste plastics. The method and associated system provide for pretreating waste plastics; a producing a pyrolysis gas by introducing the waste plastics pretreated in the pretreatment process into a pyrolysis reactor; producing in a lightening process a pyrolysis oil by introducing the pyrolysis gas into a hot filter; dehydrating a first mixed solution, obtained by mixing the produced pyrolysis oil with washing water and a demulsifier, by applying a voltage to the first mixed solution; hydrotreating a second mixed solution obtained by mixing the dehydrated first mixed solution with a sulfur source to produce a refined pyrolysis oil from which impurities are removed; and coking the refined pyrolysis oil, wherein a liquid condensed in the hot filter is re-introduced into the pyrolysis reactor.

Abstract: A method and associated system for producing syngas containing hydrogen from waste plastics. The method and system provide for pretreating waste plastics; producing a pyrolysis gas by introducing the waste plastics pretreated in the pretreatment process into a pyrolysis reactor; producing from a lightening reaction a pyrolysis oil by introducing the pyrolysis gas into a hot filter; dehydrating a first mixed solution, obtained by mixing the produced pyrolysis oil with washing water and a demulsifier, by applying a voltage to the first mixed solution; hydrotreating a second mixed solution obtained by mixing the dehydrated first mixed solution with a sulfur source to produce a refined pyrolysis oil from which impurities are removed; and gasifying the refined pyrolysis oil, wherein a liquid condensed in the hot filter is re-introduced into the pyrolysis reactor.

Abstract: A method and associated system for producing refined hydrocarbons from waste plastics. The method and system provide for: pretreating waste plastics; producing pyrolysis gas by introducing the waste plastics pretreated in the pretreatment process into a pyrolysis reactor, producing in a lightening process pyrolysis oil by introducing the pyrolysis gas into a hot filter; and dewaxing the pyrolysis oil, wherein a liquid condensed in the hot filter is re-introduced into the pyrolysis reactor. The system produces refined hydrocarbons from the waste plastics.

Abstract: A method and associated system for producing refined hydrocarbons from waste plastics. The method and system provide for: pretreating waste plastics; producing pyrolysis gas by introducing the waste plastics pretreated in the pretreatment process into a pyrolysis reactor; producing in a lightening process pyrolysis oil by introducing the pyrolysis gas into a hot filter; and subjecting the pyrolysis oil to secondary pyrolysis, wherein a liquid condensed in the hot filter is re-introduced into the pyrolysis reactor. The system produces refined hydrocarbons from the waste plastics.

Abstract: A method and associated system for producing refined hydrocarbons from waste plastics. The method and system provide for pretreating waste plastics; producing a pyrolysis gas by introducing the waste plastics pretreated in the pretreatment process into a pyrolysis reactor; producing in a lightening process a pyrolysis oil by introducing the pyrolysis gas into a hot filter; dehydrating a first mixed solution, obtained by mixing the produced pyrolysis oil with washing water and a demulsifier, by applying a voltage to the first mixed solution; hydrotreating a second mixed solution obtained by mixing the dehydrated first mixed solution with a sulfur source to produce a refined pyrolysis oil from which impurities are removed; and alkylating a third mixed solution obtained by mixing the refined pyrolysis oil and olefins, wherein a liquid condensed in the hot filter is re-introduced into the pyrolysis reactor.

Abstract: A method and associated system for producing refined hydrocarbons from waste plastics. The method and system provide for: pretreating waste plastics; producing pyrolysis gas by introducing the waste plastics pretreated in the pretreatment process into a pyrolysis reactor; producing in a lightening process pyrolysis oil by introducing the pyrolysis gas into a hot filter; and a coking process of coking the pyrolysis oil, wherein a liquid condensed in the hot filter is re-introduced into the pyrolysis reactor. The system produces refined hydrocarbons from the waste plastics.

Abstract: A method and associated system for producing syngas containing hydrogen from waste plastics. The method and system provide for: pretreating waste plastics; producing pyrolysis gas by introducing the waste plastics pretreated in the pretreatment process into a pyrolysis reactor; producing in a lightening process pyrolysis oil by introducing the pyrolysis gas into a hot filter; and gasifying the pyrolysis oil, wherein a liquid condensed in the hot filter is re-introduced into the pyrolysis reactor. The system produces syngas containing hydrogen from the waste plastics.

Abstract: A method and associated system for producing refined hydrocarbons from waste plastics. The method and system provide for: pretreating waste plastics; producing pyrolysis gas by introducing the waste plastics pretreated in the pretreatment process into a pyrolysis reactor; producing in a lightening process pyrolysis oil by introducing the pyrolysis gas into a hot filter; and a reforming process of reforming the pyrolysis oil, wherein a liquid condensed in the hot filter is re-introduced into the pyrolysis reactor. The system produces refined hydrocarbons from the waste plastics.

Abstract: A method and associated system for producing refined hydrocarbons from waste plastics. The method and system provide for: pretreating waste plastics; producing pyrolysis gas by introducing the waste plastics pretreated in the pretreatment process into a pyrolysis reactor; producing in a lightening process pyrolysis oil by introducing the pyrolysis gas into a hot filter; and a hydrotreating process of hydrotreating the pyrolysis oil, wherein a liquid condensed in the hot filter is re-introduced into the pyrolysis reactor. The system produces refined hydrocarbons from the waste plastics.

Abstract: A method and associated system for producing refined hydrocarbons from waste plastics. The method and system provide for: pretreating waste plastics; producing pyrolysis gas by introducing the waste plastics pretreated in the pretreatment process into a pyrolysis reactor; producing in a lightening process pyrolysis oil by introducing the pyrolysis gas into a hot filter; and subjecting the pyrolysis oil to solvent extraction, wherein a liquid condensed in the hot filter is re-introduced into the pyrolysis reactor. The system produces refined hydrocarbons from the waste plastics.

Abstract: A method and associated system for producing refined hydrocarbons from waste plastics. The method and system provide for pretreating waste plastics; producing a pyrolysis gas by introducing the waste plastics pretreated in the pretreatment process into a pyrolysis reactor; producing pyrolysis oil by introducing the pyrolysis gas into a hot filter; dehydrating a first mixed solution, obtained by mixing the produced pyrolysis oil with washing water and a demulsifier, by applying a voltage to the first mixed solution; hydrotreating a second mixed solution obtained by mixing the dehydrated first mixed solution with a sulfur source to produce a refined pyrolysis oil from which impurities are removed; and dewaxing the refined pyrolysis oil, wherein a liquid condensed in the hot filter is re-introduced into the pyrolysis reactor.

Abstract: A method and associated system for producing refined hydrocarbons from waste plastics. The method and system provide for pretreating waste plastics; producing a pyrolysis gas by introducing the waste plastics pretreated in the pretreatment process into a pyrolysis reactor; producing a pyrolysis oil by introducing the pyrolysis gas into a hot filter; dehydrating a first mixed solution, obtained by mixing the produced pyrolysis oil with washing water and a demulsifier, by applying a voltage to the first mixed solution; hydrotreating a second mixed solution obtained by mixing the dehydrated first mixed solution with a sulfur source to produce a refined pyrolysis oil from which impurities are removed; and isomerizing the refined pyrolysis oil, wherein a liquid condensed in the hot filter is re-introduced into the pyrolysis reactor. The system produces refined hydrocarbons from waste plastics.

Abstract: A method and associated system for producing refined hydrocarbons from waste plastics. The method includes: pretreating waste plastics; producing pyrolysis gas by introducing the waste plastics pretreated in the pretreatment process into a pyrolysis reactor; producing in a lightening process pyrolysis oil by introducing the pyrolysis gas into a hot filter; and isomerizing the pyrolysis oil, wherein a liquid condensed in the hot filter is re-introduced into the pyrolysis reactor. The system produces refined hydrocarbons from the waste plastics.

Abstract: A method and associated system for producing refined hydrocarbons from waste plastics. The method and system provide for: pretreating waste plastics; producing pyrolysis gas by introducing the waste plastics pretreated in the pretreatment process into a pyrolysis reactor; producing in a lightening process pyrolysis oil by introducing the pyrolysis gas into a hot filter; and alkylating a mixed solution obtained by mixing the pyrolysis oil and olefins, wherein a liquid condensed in the hot filter is re-introduced into the pyrolysis reactor. The system produces refined hydrocarbons from the waste plastics.

Abstract: Embodiments of the present disclosure relate to a method of producing pyrolysis oil that may reduce a content of impurities in pyrolysis oil. In the method of producing pyrolysis oil according to the present disclosure, in order to recycle polyethylene terephthalate (PET), monomers are recovered by depolymerizing polyethylene terephthalate with alcohol, and then a remaining depolymerization residue is used as an additive in pyrolysis production of waste plastics, such that a content of impurities in pyrolysis oil may be reduced.

Abstract: Provided is a method of removing an earphone noise of a portable terminal includes: recognizing a connection of an earphone through an interface unit; applying power to a mike bias port in case the earphone is recognized; sensing a signal which indicating a detachment of the earphone from the interface unit during applying power to the mike bias port; and discharging the power of the mike bias port when the detachment occurs.

Abstract: Provided is a method of removing an earphone noise of a portable terminal includes: recognizing a connection of an earphone through an interface unit; applying power to a mike bias port in case the earphone is recognized; sensing a signal which indicating a detachment of the earphone from the interface unit during applying power to the mike bias port; and discharging the power of the mike bias port when the detachment occurs.

Abstract: Provided is a method of removing an earphone noise of a portable terminal includes: recognizing a connection of an earphone through an interface unit; applying power to a mike bias port in case the earphone is recognized; sensing a signal which indicating a detachment of the earphone from the interface unit during applying power to the mike bias port; and discharging the power of the mike bias port when the detachment occurs.

Abstract: The apparatus to control an image output position of a flexible display moves a position of an image output area in a screen area when the flexible display is rotated. The apparatus may include: a bending measurement unit to measure a bending degree of the flexible display; a rotation measurement unit to measure a rotation degree and a rotation direction of the flexible display; and a controller to output an image at an image output area, and move a position of the image output area.