Biomass co-firing options on the emission reduction and electricity generation costs in coal-fired power plants
Biomass co-firing options on the emission reduction and electricity generation costs in coal-fired power plants
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DOI：
10.1016/j.renene.2010.06.039
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发表时间：
2011-01-01
期刊：
影响因子：
8.7
通讯作者：
Leon, Mathias A.
中科院分区：
文献类型：
--
作者：
Basu, Prabir;Butler, James;Leon, Mathias A.
混合燃烧为减少传统化石燃料发电厂的CO（2）排放提供了一个短期解决方案。目前正在讨论长期减少CO（2）技术的可行替代方案，如CO（2）封存、富氧燃烧和碳环燃烧，但所有这些技术仍处于发展的早期至中期阶段。通过在几乎所有燃煤电厂中立即实施生物质混合燃烧，以最小的修改和适度的投资，可以实现二氧化碳减排的增量收益，使混合燃烧成为温室气体排放问题的近期解决方案。如果世界各地运行的大多数燃煤锅炉采用混合燃烧系统，那么二氧化碳排放量的总体减少将是巨大的。它是最有效的生物质发电方式，因此它提供的CO（2）避免成本低于现有发电厂的CO（2）封存成本。本分析研究了几种混合燃烧的选择，包括一种新的选择外部（间接）燃烧使用燃烧或气化在现有的燃煤或燃油发电厂的资本和运营成本，这样的外部单位计算，以确定投资回报。这些间接共烧选项中的两个被分析沿着与在粉碎米尔斯中直接共烧生物质的选项，以比较它们的操作优点和与气化选项的成本优势。(c)2010爱思唯尔有限公司版权所有。
Co-firing offers a near-term solution for reducing CO(2) emissions from conventional fossil fuel power plants. Viable alternatives to long-term CO(2) reduction technologies such as CO(2) sequestration, oxy-firing and carbon loop combustion are being discussed, but all of them remain in the early to mid stages of development Co-firing, on the other hand, is a well-proven technology and is in regular use though does not eliminate CO(2) emissions entirely. An incremental gain in CO(2) reduction can be achieved by immediate implementation of biomass co-firing in nearly all coal-fired power plants with minimum modifications and moderate investment, making co-firing a near-term solution for the greenhouse gas emission problem. If a majority of coal-fired boilers operating around the world adopt co-firing systems, the total reduction in CO(2) emissions would be substantial. It is the most efficient means of power generation from biomass, and it thus offers CO(2) avoidance cost lower than that for CO(2) sequestration from existing power plants. The present analysis examines several co-firing options including a novel option external (indirect) firing using combustion or gasification in an existing coal or oil fired plant Capital and operating costs of such external units are calculated to determine the return on investment. Two of these indirect co-firing options are analyzed along with the option of direct co-firing of biomass in pulverizing mills to compare their operational merits and cost advantages with the gasification option. (c) 2010 Elsevier Ltd. All rights reserved.