使用 10 千瓦时加压流化床燃烧器的纯氧燃料燃烧和排放特性实验研究

IF 2.9 4区 工程技术 Q2 CHEMISTRY, MULTIDISCIPLINARY
Dong-Won Kim, Jong-Min Lee, Gyu-Hwa Lee, Kyoungil Park
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引用次数: 0

摘要

加压富氧燃烧(POFC)是一种前景广阔的碳捕集与封存技术,因为它能够以相对较低的成本高效捕集和封存二氧化碳。然而,与考虑大气条件的实验研究相比,考虑加压条件的实验研究非常有限。因此,有必要进一步研究全氧燃烧的性能和环境排放。本研究使用 10 kWth 的流化床燃烧(FBC)试验台,在 3 至 8 bar (g) 的压力下进行了全氧燃烧实验。研究了燃烧压力、氧气浓度以及与不同燃料共燃对燃烧温度、未燃碳、燃烧效率以及硫氧化物和氮氧化物排放的影响。实验结果表明,在所有 POFC 方案中,烟气中的二氧化碳浓度都超过了 90%,从而促进了碳捕集过程。此外,通过增加燃烧压力,飞灰中的未燃碳和 CO 浓度降低,从而提高了燃烧效率。此外,还测量了 NO、NO2、N2O 和 SO2 排放量的变化,以评估其对环境的影响。此外,在加压富氧燃料条件(5 巴(g),30% O2:70% CO2)下使用生物质进行的联合燃烧测试表明,与其他在流化床中燃烧煤和生物质混合物生产能源的燃烧方法相比,这些条件更具环境可持续性和效率。
本文章由计算机程序翻译,如有差异,请以英文原文为准。

Experimental Study of Oxy-fuel Combustion and Emission Characteristics Using a 10 kWth Pressurized Fluidized Bed Combustor

Experimental Study of Oxy-fuel Combustion and Emission Characteristics Using a 10 kWth Pressurized Fluidized Bed Combustor

Pressurized oxy-fuel combustion (POFC) is a promising carbon capture and storage technology because of its ability for efficient CO2 capture and storage at a relatively low cost. However, the experimental studies conducted on this technology considering pressurized conditions are limited compared with those conducted considering atmospheric conditions. Thus, further investigation on the performance and environmental emissions of oxy-fuel combustion is necessary. In this study, oxy-fuel combustion experiments were conducted using a 10 kWth fluidized bed combustion (FBC) test rig at pressures ranging from 3 to 8 bar (g). The effects of combustion pressure, oxygen concentration, and cofiring with different fuels on combustion temperature, unburned carbon, combustion efficiency, as well as SOx and NOx emissions were examined. The experimental results showed that the CO2 concentration in the flue gas exceeds 90% in all POFC scenarios, thus facilitating the carbon capture process. In addition, by increasing the combustion pressure, the unburned carbon and CO concentrations in the fly ash are reduced, thereby improving combustion efficiency. Furthermore, the variations in NO, NO2, N2O, and SO2 emissions were measured to assess their environmental impact. Moreover, cofiring tests using biomass under pressurized oxy-fuel conditions (5 bar (g), 30% O2:70% CO2) showed that these conditions are more environmentally sustainable and efficient than other combustion methods for producing energy in a fluidized bed by burning a mixture of coal and biomass.

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来源期刊
Korean Journal of Chemical Engineering
Korean Journal of Chemical Engineering 工程技术-工程:化工
CiteScore
4.60
自引率
11.10%
发文量
310
审稿时长
4.7 months
期刊介绍: The Korean Journal of Chemical Engineering provides a global forum for the dissemination of research in chemical engineering. The Journal publishes significant research results obtained in the Asia-Pacific region, and simultaneously introduces recent technical progress made in other areas of the world to this region. Submitted research papers must be of potential industrial significance and specifically concerned with chemical engineering. The editors will give preference to papers having a clearly stated practical scope and applicability in the areas of chemical engineering, and to those where new theoretical concepts are supported by new experimental details. The Journal also regularly publishes featured reviews on emerging and industrially important subjects of chemical engineering as well as selected papers presented at international conferences on the subjects.
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