摘要
大规模风电由于风能的随机性和间歇性而难以并网利用,风电的就地消纳是解决大规模非并网风电利用的途径之一。文中从系统集成的角度对风电-煤气化岛的集成方案进行了研究,提出了松散集成系统和耦合集成系统2个方案,考虑到系统复杂度以及H2与CO2合成甲烷和甲醇工艺的成熟度,耦合集成系统更具有可行性。为了分析系统集成程度对耦合集成系统的影响,定义系统集成度表示耦合系统的集成程度。模拟结果表明:当风电-煤气化岛的系统集成度为15%时,对天然气1×109m3/a规模,煤耗减少了10%,空分氧气消耗减少了23.5%,CO2排放量减少了14.8%,就地利用风电电量1.808×109kW·h/a;对甲醇90×104t/a规模,煤耗减少了10%,空分氧气消耗减少了23.6%,CO2排放量减少了17.2%,就地利用风电电量0.872×109kW·h/a。
Because of the randomicity and intermittency nature of the wind power,the in-situ conversion is considered as one of the effective ways in the utilization of large-scale non-grid-connected wind power. The integration of the wind power and coal gasification island was investigated. Two integration systems（ loose and coupled） were proposed. By taking the system complexity and the technology maturity of production methane and methanol from H2＋ CO2 into account,the coupled integration system is more feasible. The system integration degree of the wind power-coal gasification island system was adopted to investigate the effects of coupled degree on the performance of the coupled integration system. When the system integration degree is 15%,the results show that for a 1 billion m^3/a coal to natural gas system,the coal consumption,the O2 consumption and the CO2 emission of the coupled integration system are reduced by 10%,23. 5% and 14. 8%,respectively,and about1. 808 billion kW·h /a wind power electricity can be utilized; for a 0. 9 million t /a coal to methanol system,the coal consumption,the O2 consumption and the CO2 emission of the coupled integration system are reduced by10%,23. 6% and 17. 2%,respectively,and about 0. 872 billion kW·h /a wind power electricity can be utilized.
出处
《化学工程》
CAS
CSCD
北大核心
2014年第9期12-15,36,共5页
Chemical Engineering(China)
基金
中国工程院"甘肃省新能源发展战略研究"
国家重点基础研究发展计划项目(973项目)(2010CB227000)
关键词
风电
电解水
煤制合成气
系统集成度
wind power
water electrolysis
coal to syngas
system integration degree
