油品储运系统工艺参数的关联分析和用能优化措施

Analysis for correlations among technical parameters and optimizing measures of energy use in oil storage and transportation system

基于储运节能的3项基本原则,建立了储罐散热、进罐油品携入显热、外供热源维温传热及其三者之间关联的数学模型,并对油品允许储存温度(tS)、进罐温度(tI)和储罐散热系数(K)等影响储运耗能的关键工艺参数进行了灵敏度分析。以北方地区某蜡油罐为例,归纳出储运系统关键工艺参数优化设计的简易图解方法和优化用能措施:以维温热耗最小和尽可能采用低温热水替代蒸汽维温为目标,在尽可能降低油品tS的同时尽可能提高油品的tI,并进一步优化储罐的保温状况,即降低其K值。

Based on the three energy saving principles of Oil Storage and Transportation System （OSTS）, the mathematical models of heat radiated from tank surface heat brought in by inlet oil, heat transferred by outside heat sources for maintaining tank temperature, and the correlation among them were established. The sensitivity analysis was performed for three key parameters of allowable lowest temperature ts, inlet temperature tI of oil, and heat transfer coefficient K of tank, to the energy consumption. Taking a wax oil tank in North China as an example, a simplified illustration method of optimum design and optimized energy use measures for key parameters of OSTS energy system was developed. According to the principle of having the lowest heat comsumption and using hot water instead of steam,ts should be lowered and tI raised as fax as possible, and the thermal insulation need to be optimized. The thermal duty and the fee for energy consumption were calculated and results exhibited obvious economic benefit of the measures.