摘要: |
浸没燃烧式气化器(SCV)作为LNG接收站运行成本最高的装置,其运行效率计算和能耗成本核算备受关注。为此,首先以BWRS方程为基础求得SCV入口LNG和出口NG的焓值。然后,在焓值计算基础上,根据正割迭代法确定外输高压天然气经绝热降压后作为燃料气的温度,以获得燃料气加热器所提供的能耗。之后,计算出燃料气发热量,并根据能量守恒定律求得SCV效率和能耗成本。最后,为了方便LNG接收站使用,将此计算方法设计成一款计算软件以满足其需求;同时,通过实际运行数据对其可靠性进行了验证,并给出了能耗成本核算实例。结果 证明,软件能较为准确地计算SCV运行效率和能耗,可为SCV的运行计算提供相应帮助和指导。 |
关键词: 浸没燃烧式气化器 LNG接收站 运行效率 能耗成本 核算 BWRS方程 计算软件 |
DOI:10.3969/j.issn.1007-3426.2014.05.009 |
分类号:TE626 |
基金项目: |
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Operation efficiency and cost check of energy consumption of submerged combustion vaporizer |
Jiao Yueming1, Chen Shuai2, Yang Li1, Zhou Hua2, Wang Zhe2, Li Qiang2
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1.Xinjiang Hualong Oilfield Technology Company Limited;2.PetroChina Dalian Liquefied Natural Gas Company Limited
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Abstract: |
Submerged Combustion Vaporizer (SCV), as an equipment with the highest operating costs of LNG terminal, its calculation of operation efficiency and cost check of energy consumption are of much concern. Therefore, firstly, the enthalpy of inlet LNG and outlet NG of SCV was obtained based on BWRS function. Then, based on enthalpy calculation, according to Secant Iteration Method to confirm the temperature of fuel gas achieved from transportation high-pressure natural gas through adiabatic buck, the energy consumption supplied by fuel gas heater is obtained. Afterwards, the calorific value of fuel gas is calculated and according to the law of energy conservation, efficiency and energy costs of SCV are acquired. Finally, in order to facilitate the use of LNG terminal, this calculation method is designed to a calculation software to meet the needs; simultaneously, its reliability with the actual operating data and examples of costing accounting of energy consumption are verified. The results proved that the software can calculate SCV operation efficiency and energy consumption accurately, and provide help and guidance for SCV operation and calculation. |
Key words: submerged combustion vaporizer LNG terminal operation efficiency energy consumption cost check BWRS function calculation software |