中国电机工程学报
中國電機工程學報
중국전궤공정학보
ZHONGGUO DIANJI GONGCHENG XUEBAO
2013年
29期
49-56
,共8页
钙基吸收剂%煅烧%碳酸化%CO2捕集%太阳能
鈣基吸收劑%煅燒%碳痠化%CO2捕集%太暘能
개기흡수제%단소%탄산화%CO2포집%태양능
Ca-based sorbent%calcination%carbonation%CO2 capture%solar power
控制和减缓化石能源燃烧所排放的 CO2对于缓解全球气候变暖具有重要意义。以某超超临界1000 MW火力发电机组为例，建立了钙基吸收剂循环煅烧/碳酸化法捕集CO2的系统流程，基于Aspen Plus软件得到了系统的热力性能，分析了太阳能集热和煤富氧燃烧驱动 CaCO3煅烧反应对系统热力性能的影响。结果表明，与煤富氧燃烧方案相比，太阳能集热方案增加了发电功率，发电标准煤耗率降低1/3，但其发电热效率降低3.8个百分点；太阳能集热方案的等效太阳能热发电效率为28.36%，高于塔式太阳能热发电的峰值效率；提升太阳能集热方案性能的关键是提高集热器场的能量利用效率ηsol-avi，当ηsol-avi高于75%时，太阳能集热方案比煤富氧燃烧方案发电热效率高。所得结论为低能耗减排CO2、高效利用太阳能提供了新途径。
控製和減緩化石能源燃燒所排放的 CO2對于緩解全毬氣候變暖具有重要意義。以某超超臨界1000 MW火力髮電機組為例，建立瞭鈣基吸收劑循環煅燒/碳痠化法捕集CO2的繫統流程，基于Aspen Plus軟件得到瞭繫統的熱力性能，分析瞭太暘能集熱和煤富氧燃燒驅動 CaCO3煅燒反應對繫統熱力性能的影響。結果錶明，與煤富氧燃燒方案相比，太暘能集熱方案增加瞭髮電功率，髮電標準煤耗率降低1/3，但其髮電熱效率降低3.8箇百分點；太暘能集熱方案的等效太暘能熱髮電效率為28.36%，高于塔式太暘能熱髮電的峰值效率；提升太暘能集熱方案性能的關鍵是提高集熱器場的能量利用效率ηsol-avi，噹ηsol-avi高于75%時，太暘能集熱方案比煤富氧燃燒方案髮電熱效率高。所得結論為低能耗減排CO2、高效利用太暘能提供瞭新途徑。
공제화감완화석능원연소소배방적 CO2대우완해전구기후변난구유중요의의。이모초초림계1000 MW화력발전궤조위례，건립료개기흡수제순배단소/탄산화법포집CO2적계통류정，기우Aspen Plus연건득도료계통적열력성능，분석료태양능집열화매부양연소구동 CaCO3단소반응대계통열력성능적영향。결과표명，여매부양연소방안상비，태양능집열방안증가료발전공솔，발전표준매모솔강저1/3，단기발전열효솔강저3.8개백분점；태양능집열방안적등효태양능열발전효솔위28.36%，고우탑식태양능열발전적봉치효솔；제승태양능집열방안성능적관건시제고집열기장적능량이용효솔ηsol-avi，당ηsol-avi고우75%시，태양능집열방안비매부양연소방안발전열효솔고。소득결론위저능모감배CO2、고효이용태양능제공료신도경。
Capturing CO2 from fossil fuel combustion is of importance in the CO2-constrained world for mitigation of climate warming. Take an ultra-supercritical 1000MW power plant as an example, the flow sheet of CO2 capture system with Ca-based sorbent cyclic calcination/carbonation reaction was built, and the thermodynamic performance of CO2 capture system was obtained by the help of Aspen Plus software. The influence of CaCO3 calcination reaction heat supplied by concentrated solar power or coal oxy-fired on thermodynamic performance was also analyzed. The results show that compared with coal oxy-fired scheme, concentrated solar power scheme increases the output power, decreases standard coal consumption rate by 1/3, but thermal efficiency of power generation is decreased by 3.8 percentage points. The equivalent solar thermal power efficiency of concentrated solar power scheme is 28.36%, which is higher than peak efficiency of solar tower power plant. The key factor to increase thermodynamic performance of concentrated solar power scheme is energy utilization efficiency (ηsol-avi) of the solar collector field. Asηsol-avi>75%, power generation efficiency of concentrated solar power scheme is higher than that of coal oxy-fired scheme. The conclusions supply new schemes for low energy consume of CO2 capture and high efficiency utilization of solar power.
