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Removing Chlorine from Plastic using Thermochemical Pretreatment

Award Information
Agency: Department of Energy
Branch: N/A
Contract: DE-SC0023736
Agency Tracking Number: 0000273082
Amount: $249,998.00
Phase: Phase I
Program: SBIR
Solicitation Topic Code: C56-26d
Solicitation Number: DE-FOA-0002903
Timeline
Solicitation Year: 2023
Award Year: 2023
Award Start Date (Proposal Award Date): 2023-07-10
Award End Date (Contract End Date): 2024-07-09
Small Business Information
200 Yellow Place
Rockledge, FL 32955-5327
United States
DUNS: 175302579
HUBZone Owned: No
Woman Owned: No
Socially and Economically Disadvantaged: No
Principal Investigator
 Alex Paulsen
 (321) 631-3550
 apaulsen@mainstream-engr.com
Business Contact
 Michael Rizzo
Phone: (321) 631-3550
Email: mar@mainstream-engr.com
Research Institution
N/A
Abstract

Approximately 380 million tons of plastic is produced every year and over 75% of plastic is discarded as waste after a single use. Only 8% of waste plastic is recycled and 76% is landfilled. Many plastics are simply unrecyclable and many products use multiple materials that prevent recycling. Moreover, recyclable plastics need to be free of contaminants, but cross-contamination from polymer mixtures and additives is common. As a result, recycled plastics are often low value with less desirable properties. Gasification represents a feedstock agnostic process that can convert plastic and other wastes into a syngas that can be upgraded to fuels and chemicals. However, gasifying halogenated plastics (e.g., PVC) will produce harmful gases (e.g., hydrochloric acid, chlorine gas, and dioxins) that should not be released to the environment. Existing post-gasification treatment methods are expensive. Therefore, we need to develop feedstock pretreatment methods to remove chlorine prior to gasification. Our hydrothermal pretreatment process has the capability to preferentially remove chlorine from mixed plastics and produce a feedstock ideal for gasification processes.

* Information listed above is at the time of submission. *

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