SBIR Phase I: High Temperature NOx Abatement Catalyst for Natural Gas Fired Power Plants

该小型企业创新研究(SBIR)第一阶段项目包括开发一种新型高温NOx消减催化剂和催化工艺，用于控制天然气发电厂的NOx、NH3、CO和非甲烷烃排放。该催化剂被设计为在余热蒸汽发生器(HRSG)的上游运行，从而在550℃至620℃之间的温度下运行。这里描述的催化过程包括将沸石基催化剂定制为在指定的温度范围内运行，并采用分层床结构的催化剂。分层床结构设计为在过量NH3的情况下运行，从而提高了NOx的减排效率。为床层入口区设计的催化剂负责以最小的NH3分解实现NOx的降低。位于床层出口区的催化剂设计用于减少剩余的NOx，分解多余的NH3，并氧化CO和非甲烷烃类。该催化剂的开发将为发电行业提供一种简单、低成本的手段，以满足日益严格的排放要求。由于与改造和新安装相关的资本成本更低，运营效率更高，以及与废催化剂相关的处置负担减少，能够在余热锅炉以外运行的催化剂能够超过排放要求，预计将迅速获得市场接受。

This Small Business Innovation Research (SBIR) Phase I project involves developing a novel high temperature NOx abatement catalyst and catalytic process for the control of NOx, NH3, CO and non-methane-hydrocarbon emissions from natural gas fired power plants. The catalyst is designed to be operated up-stream of the heat recovery steam generator (HRSG), thereby operating at temperatures between 550 C and 620 C. The catalytic process described herein involves tailoring a zeolite-based catalyst to operate within the specified temperature regime, and employing the catalyst in a layered bed configuration. The layered bed configuration is designed to operate with excess NH3, thereby increasing NOx abatement efficiency. The catalyst designed for the inlet region of the bed is responsible for achieving NOx reduction with minimal NH3 decomposition. The catalyst located in the outlet region of the bed is designed to reduce the remaining NOx, decompose the excess NH3, and oxidize CO and non-methane hydrocarbons. Development of said catalyst will provide the power generation industry with a simple, low cost means of meeting increasingly stringent emissions requirements. A catalyst capable of exceeding emissions requirements while operating outside the HRSG is expected to rapidly gain market acceptance due to lower capital costs associated with retrofit and new installation, increased operating efficiency, and reduced disposal burdens associated with the spent catalyst.