Gaseous and Particulate Emissions from a Chimneyless Biomass Cookstove Equipped with a Potassium Catalyst.
Gaseous and Particulate Emissions from a Chimneyless Biomass Cookstove Equipped with a Potassium Catalyst.
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DOI：
10.1016/j.apenergy.2018.10.122
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发表时间：
2019-02
期刊：
影响因子：
11.2
通讯作者：
Alex D. Paulsen;Tyler A. Kunsa;A. Carpenter;Ted J. Amundsen;Nicholas Schwartz;J. Harrington;Jackson Reed;Brett Alcorn;John M. Gattoni;Paul E. Yelvington
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文献类型：
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作者：
Alex D. Paulsen;Tyler A. Kunsa;A. Carpenter;Ted J. Amundsen;Nicholas Schwartz;J. Harrington;Jackson Reed;Brett Alcorn;John M. Gattoni;Paul E. Yelvington
大约有30亿人在明火或简陋的炉灶上使用固体燃料（主要是木材）做饭。这些传统的烹饪方法会产生颗粒物和一氧化碳，已知会造成严重的呼吸道健康问题，尤其是妇女和儿童，他们的接触量往往最高。在这项工作中，将一种廉价的钾基催化剂加入到无烟囱生物质炉灶中，通过催化氧化减少有害物质的排放。钛酸钾是一种有效的、稳定的氧化催化剂，能够氧化颗粒物和一氧化碳。在一个定制的火箭式改进炉灶中，使用堇青石整体石加入钛酸钾，与空白整体石的基准炉灶相比，颗粒物排放量减少了36%，与没有整体石的炉灶相比，减少了26%。此外，与精心照料的三石火相比，催化炉减少了82%的颗粒物排放，减少了70%的一氧化碳排放，提高了100%的效率。钛酸钾也被证明在低至500 °C的温度下氧化一氧化碳，或者当掺杂铜或钴时低至300 °C。
Approximately three billion people cook with solid fuels, mostly wood, on open fires or rudimentary stoves. These traditional cooking methods produce particulate matter and carbon monoxide known to cause significant respiratory health problems, especially among women and children, who often have the highest exposure. In this work, an inexpensive potassium-based catalyst was incorporated in a chimneyless biomass cookstove to reduce harmful emissions through catalytic oxidation. Potassium titanate was identified as an effective and stable oxidation catalyst capable of oxidizing particulate matter and carbon monoxide. Using a cordierite monolith to incorporate potassium titanate within a bespoke, rocket-style, improved cookstove led to a 36% reduction in particulate matter emissions relative to a baseline stove with a blank monolith and a 26% reduction relative to a stove with no monolith. Additionally, the catalytic stove reduced particulate matter emissions by 82%, reduced carbon monoxide emissions by 70%, and improved efficiency by 100% compared to a carefully tended, three-stone fire. Potassium titanate was also shown to oxidize carbon monoxide at temperatures as low as 500 °C, or as low as 300 °C when doped with copper or cobalt.