Upcycling of plastics into fuels and value-added chemicals

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A single-step thermal depolymerization process addresses the challenge of processing unsorted plastic waste by converting it into valuable hydrocarbons, achieving efficient and cost-effective conversion of plastic waste into fuels and chemicals.

WO2025062423A1 Publication Date: 2025-03-27SATISH KUMAR BV +1

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Patent Information

Application Number: PCT/IN2024/051779
Authority / Receiving Office: WO · WO
Patent Type: Applications
Current Assignee / Owner
Priority Date: 2023-09-19
Filing Date: 2024-09-18
Publication Date: 2025-03-27

Application Information

Patent Timeline

19 Sep 2023

Priority

18 Sep 2024

Application

PCT/IN2024/051779

27 Mar 2025

Publication

WO2025062423A1

IPC: B09B3/40; B09B101/75; C08J11/06; C10G3/00; C10B53/07; F23G7/12; F23G5/44

CPC: B09B3/40; B09B2101/75; C10B53/07; F23G5/44; F23G7/12; C10G1/10; C10B47/06; C10K1/04

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Application Domain

Transportation and packaging Solid waste disposal

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AI Technical Summary

Technical Problem

The growing global plastic waste problem, particularly in emerging markets lacking adequate waste management infrastructure, necessitates efficient technologies for processing mixed plastic waste into valuable fuels and chemicals.

Method used

A single-step thermal depolymerization process converts unsorted plastic waste into valuable hydrocarbons, which can be used directly as fuel oils or further processed into chemicals, without the use of catalysts or external pressure.

Benefits of technology

This process effectively converts plastic waste into high-value hydrocarbon fractions that can be used as specialty chemicals, plastic intermediates, or fuels, while being environmentally friendly and cost-effective.

✦ Generated by Eureka AI based on patent content.

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Abstract

The present invention relates to a system and method for the conversion of plastics to hydrocarbons in a single-step process. The plastics may include industrial plastics or municipal waste plastics. The system comprises a series of kilns, hot condensers, cool condensers, gas distributors and receptacles. Waste plastics freed of moisture and oxygen, are slowly heated upto 400°C. Initially, the fraction containing hydrocarbons below C20 is separated. The hydrocarbon fraction of C14 to C20 is then cracked to yield C7 - C10 and C10 - C14 fractions. The hydrocarbon fraction lighter than C14 is further cracked and C7 to C10 hydrocarbon fraction is collected. C10 hydrocarbon stream is then separated into C9 and C8 hydrocarbons. Lighter hydrocarbons of C5 to C7 are further collected. Said system does not use any catalyst and no induced pressure is used beyond ambient pressure.

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