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应用能源技术
doi:10.3969/j.issn.10093230.2013.10.009
2013年第10期(总第190期)
热泵技术在火电厂CO,减排中的应用研究
张冰
(辽宁建筑职业学院,辽宁辽阳111000)
摘要:二氧化碳气体被普遍认为是导致全球气候变暖的重要原因之一。我国的一次能源是以煤炭为主,燃煤的电力和热力企业的二氧化碳排放量约占一半。利用热泵技术国收汽轮机乏汽余热,将热量用于MEA溶液的再生,可以降低火电厂的碳捕捉成本。以600MW机组为例,安装改进型碳捕提装置的机组热效率与安装原碳捕提装置的机组相比,得到安装改进型破捕提装置的机组热效率有明显提高。对于改进型碳捕捉系统,碳捕提率为90%时所需的抽汽量为 317.04/h,热效率下降7.35%,比传统的方法提高5.41%。随着碳捕提率的变化,湿冷机组效率变化曲线的斜率比直接空冷机组大,但随着碳捕提率的增大,二者的差距越来越小。
关键词:二氧化碳捕捉;余热利用;热泵技术;经济性分析中图分类号:TK227.6
文献标志码:B
文章编号:10093230(2013)10-003207
TheAppliedResearchaboutHeatPumpTechnologyUsedforCarbon
EmissionReductioninThermalPowerPlant
ZHANG Bing
(LiaoningJianzhuVocationalUniversity,Liaoyang111000,China)
Abstract: The carbon dioxide gas was revealed generally one of substantial cause global climate warming. The main primary energy of our country is coal, and the enterprises'carbon dioxide discharge composes half approximately. The turbine exhaust steam afterheat may be used by heat pump technology, and the heat is used for the regeneration of MEA solution to reduce the carbon capture cost.As 600MW units for example, through comparing the thermal efficiency of the unit installed advanced carbon seizure device and the unit installed advanced carbon seizure device, the result indicates the original carbon seizure device, the result indicates the thermal efficiency of installed advanced carbon seizure device have distinct enhancement. For the advanced carbon system the steam extraction quantity is 317. 04 h when the carbon capture rate is 90% , and the thermal efficiency drops 7. 35%, enhancing 5. 41% compared to the traditional method. Along with the carbon captures rate changing, the slope of the wet cold unit efficiency change curve is bigger than the direct air cooled unit, but the two's disparity gets smaller along with carbon capture rate enlargement.
Key words: Carbon capture; Waste heat utilization; Heat pump technology; Efficient analysis
0引言
我国是世界上最大的发展中国家,由于我国的快速发展,国家的能源消耗及二氧化碳排放逐
收稿日期:2013-07-18
修订日期:2013-0820
作者简介:张冰(1979-),女,硕士,讲师,主要从事供热通
风与空气调节方面的科研与教学工作。
万方数据
年上升的较快,温室效应气体排放量已居世界第二,到2030年,我国的排放量将达到全球排放量的33%,面临控制温室气体排放的巨大压力[1]。以化石燃料为主要能源的火电厂是CO,的一个集中排放源,占其排放总量的30%左右[2]。研究