SBIR Phase II: Photochemical Process for Transformation of Ozone-Depleting Substances into Environmentally Benign and Commercially Valuable Products

SBIR第二阶段项目将导致一项新技术的全面商业化，该新技术能够将现有的臭氧消耗物质(氯氟化碳和哈龙)库存转化为环境可接受和具有商业价值的产品。拟议的光氢脱卤化(PHD)技术利用了通过将紫外线(UV)辐射与还原大气相结合而获得的协同效应。UV Fight通过碳卤键的断裂促进链的启动。长链自由基反应会导致理想产物的形成。第一阶段的研究已经证明了可行性。对三种具有代表性的氯氟烃的实验结果令人信服且毫不含糊地表明，PHD工艺可以实现选择性和高转化率，转换后的氟氯化碳的成本不到1美元/磅，低于目前的任何销毁技术。第二阶段的主要目标是设计、建造和使用用于实地演示的中试规模的原型。为实现这一目标，制定了三项任务工作计划。它包括：(A)氟氯化碳和哈龙延伸的实验室规模研究，并辅之以化学动力学模型；(B)设计和建造一个试点规模的原型；(C)实地示范和绩效评估。第二阶段的成功完成最终将导致第三阶段的商业化。这一过程应产生一种“绿色”技术，将臭氧消耗物质转化为具有商业价值的产品，对环境无害。目前估计有45亿磅的氯氟化碳库存，这构成了一个严重的处置问题，将成为生产高价值产品的重要原料。根据初步成本估计，现有的库存代表着巨大的环境责任，可以在这个过程中转化为约40亿美元的可销售产品。

This SBIR Phase II project will lead to a full-scale commercialization of a novel technology capable of transforming existing stockpiles of ozone-depleting substances (chlorofluorocarbons (CFCs) and Halons) into environmentally acceptable and commercially valuable products. The proposed Photo-Hydro-Dehalogenation (PHD) technology exploits a synergistic effect obtained by combining ultraviolet (UV) radiation with a reducing atmosphere. UV fight promotes chain initiation by carbon-halogen bond cleavage. Long-chain radical reactions lead to formation of desirable products. Phase I research has already proven feasibility. Experimental results with three representative chlorofluorocarbons have convincingly and unambiguously demonstrated that the PHD process can achieve selective and high conversion at a cost of less than $ 1/lb of CFC converted, which is lower than any current destruction technology. The primary objective of Phase II is to design, construct and employ a pilot-scale prototype for a field demonstration. To meet this objective, a three-task work plan has been developed. It includes: (a) bench-scale studies of CFCs and extension to Halons, supplemented by chemical kinetic modeling, (b) design and construction of a pilot-scale prototype, and (c) field demonstration and performance evaluation. Successful completion of Phase II will ultimately lead to Phase III commercialization. This process should lead to a `green` technology for environmentally safe transformation of ozone-depleting substances into commercially valuable products. The current stockpile of estimated 4.5 billion pounds of CFCs, which poses a serious disposal problem, will become a vital feedstock to produce high value products. Based on preliminary cost estimates, the existing stockpile which represents a huge environmental liability can be turned with the process into about 4 billion dollars of salable products.