摘要
[目的]液化天然气(LNG)接收站通常需要耗费大量的水资源和电能来实现天然气的气化输送,合理地选择取排水方案对于实现节能减碳具有重要意义。[方法]充分利用临近已建电厂的温排水资源,并提出海域取排水、电厂明渠取排水和电厂明渠取水海域排水三种不同的取排水方案,从工程建设难度、经济和社会效益等维度对各个取排水方案进行比较和探讨。[结果]方案比选结果表明:与传统的海域取排水方案相比,利用电厂温排水的取排水方案能够减少约5.6%的基础建设投资,减少约41%的LNG接收站开架式气化器(ORV)用水量,节省年运行耗电量约547.1万kWh,相当于每年至少可以减少1000 MW超超临界发电机组约3548.3 t的二氧化碳排放量。此外,此取排水方案还大大节约了用海面积和减少了工程取排水对海洋生态的影响。[结论]本研究提出的LNG接收站利用电厂温排水的取排水方案具有较好的社会、经济和环境效益,能够为其他工程充分整合资源、进一步提高节能节水水平和减少碳排放提供借鉴。
[Introduction]Liquefied natural gas(LNG)terminal usually consume a lot of water resources and electric power to gasify and transport the gas.Reasonable selection of water intake and drainage schemes is of great significance to save energy and reduce carbon emissions.[Method]In order to make full use of the thermal drainage resources from the neighboring existing power plants,three different water intake and drainage schemes were proposed:Simultaneously draw and drain water from the ocean,simultaneously draw and drain water from the power plant open channel,and draw water from the power plant open channel and drain water to the ocean.All water intake and drainage schemes were compared and discussed on their engineering construction schemes,economic,and social benefits,etc.[Result]The results of the comparison and selection of the schemes show that compared with the traditional scheme of taking and drainage water from the ocean,those of taking water from the power plant could reduce the infrastructure investment by about 5.6%,reduce the water consumption of open rack vaporizer(ORV)by about 41%,and save about5.471 million kWh of annual operating power consumption,which was equivalent to reducing carbon dioxide emissions from 1000 MW ultra-supercritical generator sets by at least 3548.3 tons per year.In addition,this water intake and drainage scheme also greatly saves the sea area and reduces the impact of water intake and drainage on marine ecology.[Conclusion]The new water intake and drainage scheme proposed in this study has good social,economic,and environmental benefits and provides some guidance for other projects to fully integrate energy,further improves energy and water conservation,and reduces carbon emissions from LNG terminal.
作者
冯道荣
刘元向
邓小明
姜华军
FENG Daorong;LIU Yuanxiang;DENG Xiaoming;JIANG Huajun(Guangdong Huizhou LNG Co.,Ltd.,Huizhou 516000,Guangdong,China;China Energy Engineering Group Guangdong Electric Power Design Institute Co.,Ltd.,Guangzhou 510663,Guangdong,China)
出处
《南方能源建设》
2022年第S01期36-42,共7页
Southern Energy Construction
基金
中国能建广东院科技项目“发电厂取排水建(构)筑物系列设计导则”(ER05891W)
关键词
LNG接收站
取排水工程
电厂温排水
循环水综合利用
碳减排
LNG terminal
water intake and drainage engineering
power plant thermal drainage
circulating water comprehensive utilization
carbon emission reduction
