Fast Pyrolytic Solid Waste Remediation for Small Contingency Base Camps

ABSTRACT: Mainstream Engineering Corporation (MEC) proposes developing a pyrolytic solid waste remediation system (py-SWRS) for processing mixed waste at small contingency base camps. The proposed py-SWRS unit is an updated and improved version of a portable pyrolysis reactor already under development at MEC for greenwaste processing at landfills located on large, fixed DoD installations. MEC"s portable fast pyrolysis unit includes proprietary reactor design features to improve yield and energetics. In Phase I, an existing pilot reactor was demonstrated with a mixed waste stream representative of solid waste generated at small contingency bases. Key components of the py-SWRS process were designed and experimentally tested. In addition, a high-fidelity design including 3D layout and sizing/costing of capital components was performed. In Phase II, process improvements will be made to fully integrate the feedstock handling, improve maintainability, and make the process self-sustaining. A second-generation py-SWRS technology demonstrator will be fabricated and fully characterized. Phase II will culminate in demonstration of the py-SWRS unit in a high-fidelity demonstration environment. BENEFIT: The enormous amount of solid waste generated by deployed forces is typically disposed of by burning in open burn pits or burn boxes. This practice potentially exposes troops to air toxics. Backhauling of waste exposes drivers in the convoys to the potential threat of ambush. The proposed py-SWRS unit improves warfighter safety by converting mixed solid waste (mostly from field feeding) to clean combustion products and a small amount of sterile inorganic ash. The process is also capable of exporting bio-oil that can be used for production of heat and/or power; an option which is more attractive at larger bases. The portable pyrolysis technology behind the py-SWRS also has strong dual-use commercial potential for conversion of agricultural residues to a renewable fuel oil. MEC is aggressively pursuing commercial markets for this technology in an effort to increase sales volumes and drive down costs.