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[1]胡恒进,张东明,高星星,等.调峰型LNG工厂碳排放核算及减排对策建议[J].油气储运,2024,43(08):1-14.
　HU Hengjin,ZHANG Dongming,GAO Xingxing,et al.Carbon emission accounting and emission reduction countermeasures for peak-shaving LNG plants[J].Oil & Gas Storage and Transportation,2024,43(08):1-14.
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调峰型LNG工厂碳排放核算及减排对策建议

《油气储运》[ISSN:1000-8241/CN:13-1093/TE] 卷: 43 期数: 2024年08期 页码: 1-14 栏目: 出版日期: 2024-08-25
Title:
Carbon emission accounting and emission reduction countermeasures for peak-shaving LNG plants
作者:
胡恒进; 张东明; 高星星; 王大为
Author(s):
HU Hengjin; ZHANG Dongming; GAO Xingxing; WANG Dawei
关键词:
调峰型LNG工厂; 排放源; 排放因子; 碳平衡法; 动态核算体系; 减排对策
Keywords:
peak-shaving LNG plant;  emission source;  emission factor;  carbon balance method;  dynamic accounting system;  emission reduction strategy
分类号:
TE991.1
文献标志码:
A
摘要:
【目的】“双碳”目标对LNG产业提出了更高的降碳与环保要求，在此形势下，精准掌握LNG产业链碳排放水平，充分了解影响因素以制定切实可行的减排方案尤为重要。【方法】从典型的天然气液化工艺出发，采用“生产系统-工业过程-排放设施”3层分级的方法对调峰型LNG工厂的碳排放源进行识别与归类，分析了基本生产系统投入产出关系。在此基础上构建了以碳平衡法为主，排放因子法为辅的碳排放动态核算体系，以弥补目前碳排放体系核算结果不精准、无法核算逃逸碳排放的问题。以国内某大型调峰型LNG工厂2022年实际生产运行情况为例，测算其全年碳排放量，分析碳排放结构与各排放源的影响因素。【结果】该工厂2022年碳排放总量为15.43×104 t，液化过程碳排放强度为0.51 t CO2/t LNG，气化过程为1.37 t CO2/（104 m3），其中电力间接排放占比最高，达到66.95%，其次是燃料燃烧排放、工艺过程排放、火炬燃烧排放，分别占比18.42%、12.58%及1.79%，逃逸排放占比0.27%。【结论】针对该工厂的碳排放结构与强度特征，从应用冷能发电技术辅以外购绿色电力、实施节能减排措施进行节能改造、优化火炬系统密封气源并增设BOG作为燃料气系统补充气源、增加碳捕集回收利用装置等4个方面提出了碳减排对策建议，为LNG产业的低碳化发展提供合理建议和参考方向。
Abstract:
The "dual carbon" goal puts forward higher carbon reduction and environmental protection requirements for the LNG industry. In this situation, it is particularly important to accurately grasp the carbon emission level of the LNG industry chain and fully understand the influencing factors to develop feasible emission reduction plans. Therefore, starting from the typical natural gas liquefaction process, this paper adopts the three-tiered classification method of "production system-industrial process - emission facility" to identify and classify the carbon emission sources of peaking LNG plants, analyzes the input-output relationship of basic production systems, and builds a dynamic carbon emission accounting system based on carbon balance method and supplemented by emission factor method. It makes up for the problem that the accounting results of the current carbon emission system are not accurate enough to account for escaped carbon emissions. Taking the actual production and operation of a large peak-regulating LNG plant in China in 2022 as an example, the annual carbon emissions were calculated, and the carbon emission structure and influencing factors of each emission source were analyzed. The research results show that the total carbon emission of the plant in 2022 is 15.43×104 t, the carbon emission intensity of the liquefaction process is 0.51t CO2/t LNG, and the gasification process is 1.37t CO2/104 m3, among which the indirect emission of electricity accounts for the highest proportion. It reached 66.95%, followed by fuel combustion emission, process emission and torch combustion emission, accounting for 18.42%, 12.58% and 1.79% respectively, and escape emission accounted for 0.27%. According to the carbon emission structure and intensity characteristics of the plant, carbon emission reduction countermeasures and suggestions were put forward from four aspects: application of cold energy power generation technology supplemented by purchasing green power, implementation of energy-saving and emission reduction measures for energy-saving transformation, optimization of sealed air source of torch system, addition of BOG as supplementary air source of fuel gas system, and increase of carbon capture and recycling device. Therefore, it provides feasible technical path and scientific decision-making support for the low-carbon development of LNG industry.

相似文献/References:

[1]胡恒进 张东明 高星星 王大为.调峰型LNG工厂碳排放核算及减排对策建议[J].油气储运,2024,43(06):1.
　HU Hengjin,ZHANG Dongming,GAO Xingxing,et al.Carbon emission accounting and emission reduction countermeasures for peak-shaving LNG liquefaction plants[J].Oil & Gas Storage and Transportation,2024,43(08):1.
[2]胡恒进,张东明,高星星,等.调峰型LNG工厂碳排放核算及减排对策建议[J].油气储运,2024,43(06):632.[doi:10.6047/j.issn.1000-8241.2024.06.004]
　HU Hengjin,ZHANG Dongming,GAO Xingxing,et al.Carbon emission accounting for peak-shaving LNG plant and suggestions on emission reduction countermeasures[J].Oil & Gas Storage and Transportation,2024,43(08):632.[doi:10.6047/j.issn.1000-8241.2024.06.004]

更新日期/Last Update: 2024-04-10