燃气机组和“近零排放”燃煤机组对大气环境的影响对比——以F电厂为例

该文从定量角度分析燃气机组和“近零排放”燃煤机组常规大气污染物排放水平差异,采用AERMOD模型预测不同燃料机组对大气环境的影响程度。燃煤机组执行“近零排放”标准后,污染物允许排放量较燃气机组更小,模拟污染物刚好达到排放限值时,发现各常规大气污染因子对大气环境影响均不大,说明燃煤机组执行“近零排放”标准后不再是对环境污染严重的发电模式。实际排放情景下,燃气机组的烟尘、SO_(2)、NO_(x)的排放量均小于燃煤机组,模拟实际排放结果显示,“近零排放”燃煤机组SO_(2)日均、年均浓度贡献值占标率比天然气分别多1.99%、0.18%,而NO_(2)日均、年均浓度贡献值占标率比天然气分别少0.54%、0.23%。

锅炉全燃煤气的探讨与应用

通过对锅炉实施技术改造，优化锅炉燃料结构，实现锅炉全燃煤气。

神华湄洲湾港电储一体化项目储煤基地工程定位探讨

神华集团拟在湄洲湾东吴港区建设港电储一体化项目。本文对项目建设的煤炭市场现状、吞吐量预测等进行分析。提出储煤基地合理的功能定位、建设规模及特点,可为今后类似工程的规划建设提供参考。

Exergy life cycle assessment model of “CO_2 zero-emission” energy system and application

An exergy life cycle assessment(ELCA) model based on life cycle assessment(LCA) and exergy methodology was developed to assess a 2×300 MW coal-fired power plant,and the results indicated that the exergy input in operation phase of power plant accounts for 99.89% of the total input and only 0.11% in construction and decommission phases. Direct and indirect exergy inputs account for 93.03% and 6.97%,respectively. Compared with coal-fired power generation system before carbon emission reduction,exergy input-output ratio of life cycle "CO2 zero-emission" energy system and exergy efficiency are about 5.563 and 17.97%,respectively,which increases by 62.47% and declines by 11.21% approximately. The model quantifies the energy,resource consumption and pollutant emissions of system life cycle using exergy as the basic physical parameter,which will make the assessment more objective and reasonable.

新技术

美发明新型“干性”燃料电池，澳大利亚、日本联合研制零排放燃煤电厂。