No abstract

Catalytic Extraction Processing (CEP) is an innovative Elemental RecyclingTM technology that converts organic, organometallic, and inorganic waste, byproduct, or process streams into marketable commercial products:  industrial gases, metal alloys, and ceramics (e.g., inorganic oxides, halides, sulfides). Feed materials are injected into a molten metal bath where dissociation of molecular entities to their respective elements and reaction of these dissolved elemental intermediates to form products occur. Process chemistry is driven by reaction thermodynamics, solution equilibria, and metal catalysis, which allow specific partitioning of elements and conversion of feed materials to the desired products as predicted. Experimental results demonstrate CEP's capabilities for waste minimization (e.g., product formation) and environmental performance (e.g., minimum emissions). Examples include the processing of highly toxic toluene diisocyanate production wastes (EPA RCRA listed waste K027), chlorinated organics (EPA RCRA listed waste F024), and mixed metallic, plastic, and inorganic wastes (weapon componentry). Synthesis gas, hydrogen chloride, ceramic, and metal products were manufactured from these waste materials. CEP consistently demonstrates destruction removal efficiencies (DREs) exceeding 99.9999%, NO x and SO x below detection limits (typically 1 ppm to 100 ppm), and dioxins/furans nondetectable to the targeted regulatory limit of 0.1 ng/Nm3 2,3,7,8 TCDD toxicity equivalent (TEQ). Condensed-phase environmental quality was verified by ceramic phases passing toxicity characteristic leaching procedure (TCLP) and the absence of hazardous organic constituents in both metal and ceramic phases. CEP's environmental performance has been validated by the U.S. EPA's best demonstrated available technology (BDAT) equivalency designations, while its manufacturing capabilities have been confirmed by Massachusetts Department of Environmental Protection (MADEP) recycling certifications.

The feasibility of using a mechanical mixture of a Co/MgO/SiO 2 Fischer-Tropsch ll:atalystand a Cu-ZnO/Al20 3 water-gas-shift (WGS) catalyst for hydrocarbon synthesis in slurry reactor has been established. Such a mixture can combine the superior product :listribution from cobalt with the high activity for the WGS reaction characteristic of iron. Weight ratios of Co/MgO/SiO2 to Cu-ZnO/Al203 of 0.27 and 0.51 for the two catalysts were studied at 240°C, 0.79 MPa, and in situ H2/CO ratios between 0,8 and 3.0. Each catalyst mixture showed stable Fischer-Tropsch activity for about 400 hours-onstream at a level comparable to the cobalt catalyst operating alone. The Cu-ZrlO/A]203 catalyst exhibited a very slow loss of activity under these conditions, but when operated alone it was stable in a slurry reactor at 200-220°C, 0.79-1.48 MPa, and H2/CO in situ _ratios between 1.0 and 2.0. The presence of the water-gas-shift catalyst did not affect the long-term stability of the primary Fischer-Tropsch selectivity, but did increase the extent of secondary reactions, such as l-alkene hydrogenation and isomerization.

No abstract

No abstract