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首页> 外文会议>International Pittsburgh Coal Conference >INVESTIGATION OF THE IMPACT OF THE CONTAMINANTS PRODUCED BY CO-GASIFICATION OF CAOL AND BIOMASS ON THE COMMERCIAL FISCHER-TROPSCH AND WATER-GAS-SHIFT CATALYSTS
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INVESTIGATION OF THE IMPACT OF THE CONTAMINANTS PRODUCED BY CO-GASIFICATION OF CAOL AND BIOMASS ON THE COMMERCIAL FISCHER-TROPSCH AND WATER-GAS-SHIFT CATALYSTS

机译：煤与生物质煤和生物质协同污染物对商业费 - 托和水 - 液移催化剂的影响研究

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In the co-gasification of coal and biomass, it is anticipated that ash, sulfur species, trace toxic metals, halides, and nitrogen species will be present. But the concentrations of these contaminants will be much lower in the synthesis gas generated by co-gasification compared to coal alone. The poisoning effects of heteroatoms (e.g., sulfur, nitrogen and oxygen) as well as halides and trace metals, are well-documented for the Water Gas Shift (WGS) and Fischer Tropsch (F-T) catalysts. Nevertheless, the impact of these contaminants must be re-evaluated at the reduced concentrations predicted for the CBTL application. In addition, the biomass feedstock will introduce a different spectrum of contaminants, including the vapors of alkali metals (such as sodium and potassium compounds) and their respective salts (e.g., KC1 and NaCl), ammonia and phosphorous that could render the WGS and FT catalysts inactive. TDA Research, Inc with Department of Energy (DOE) funding is carrying out an investigation of the effects of coal and biomass contaminants on the performance (activity and selectivity) and life of the Water Gas Shift (WGS) and Fischer Tropsch (F-T) catalysts. In this study, we have first used thermodynamic modeling tools to identify contaminants that are most likely to react with the active phase and promoters used in the WGS and F-T catalysts. We then carried out screening experiments utilizing generic and commercial catalysts to measure changes in activity and selectivity due to exposure to contaminant species under representative conditions. In this paper, we will present the preliminary results from the catalyst development and contaminant evaluations done at TDA.
机译：在煤和生物质的共气化中，预计灰分，硫种类，痕量有毒金属，卤化物和氮物质将存在。但是，与单独的煤相比，这些污染物的浓度将在共气化产生的合成气中较低。杂原子（例如，硫，氮气和氧气）以及卤化物和痕量金属的中毒作用是良好地记录的水气体换档（WGS）和Fischer托（F-T）催化剂。然而，必须在对CBTL申请预测的浓度下重新评估这些污染物的影响。此外，生物质原料将引入不同光谱的污染物，包括碱金属（如钠和钾化合物）的蒸汽及其各自的盐（例如，KC1和NaCl），氨和磷，可以使WG和FT呈现催化剂无活性。能源部（DOE）资金的TDA研究正在进行煤炭和生物质污染物对水煤气变换（WGS）和费氏托（FT）催化剂的效果和寿命的影响。在这项研究中，我们首先使用热力学建模工具来鉴定最有可能与WGS和F-T催化剂中使用的活性相和启动子反应的污染物。然后，我们利用普通和商业催化剂进行筛选实验，以测量由于在代表性条件下暴露于污染物物种而导致的活性和选择性的变化。在本文中，我们将介绍TDA催化剂发育和污染物评估的初步结果。

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