压力容器安全阀的计算选型及经济性分析
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摘要
以国内某海洋油气开采平台油水分离模块中关键压力容器的安全阀计算选型为例,分析了选择不同性能的保温材料对安全阀计算选型及整体成本的影响,提出了一种经济性分析方法。采用HYSYS静态模拟方法,计算火灾工况下压力容器安全阀的工艺泄放量,根据不同保温材料的导热系数值,计算得到该泄放温度下的环境因子F值,用于矫正最大泄放量数值,最终选型得到不同尺寸的安全阀、阀前管线及工艺阀门。询价并比较成本价格后,选择了低成本的方案进行设计、采购和制造。分析结果表明:选择硅酸铝棉为保温材料可以显著减小环境因子F值,从而降低阀门及管线的采购成本。但是由于硅酸铝棉材料相对价格较高,具体工作应按照经济性分析方法进行计算,找到最佳的方案。
Taking the calculation and selection of pressure relief valve in the key pressure vessel on the oil-water separator module at some offshore platform as example,this paper analyzes the impacts of insulation materials with different performances on the calculation and selection of pressure relief valve and overall cost. It presents an economic analysis method. HYSYS static simulation is adopted to calculate the process relief capacity of the safety valve of pressure vessel under fire conditions. According to the coefficient of thermal conductivity of different insulation materials,the value of environmental factor F under such relief temperature is obtained through calculation. This value is used to correct the maximum relief capacity. Safety valves,valve lines and process valves of different sizes are selected finally. After making inquiries and comparing the cost price,a low-cost solution is chosen for design,procurement and manufacturing. The results show that selecting aluminium silicate wool as the insulation material can decrease the value of environmental factor F obviously. Thus,the procurement cost of valves and pipelines are decreased relevantly. However,the cost of aluminium silicate wool is comparatively high,so the best solution shall be determined according to the economic analysis method introduced in this paper.
Taking the calculation and selection of pressure relief valve in the key pressure vessel on the oil-water separator module at some offshore platform as example,this paper analyzes the impacts of insulation materials with different performances on the calculation and selection of pressure relief valve and overall cost. It presents an economic analysis method. HYSYS static simulation is adopted to calculate the process relief capacity of the safety valve of pressure vessel under fire conditions. According to the coefficient of thermal conductivity of different insulation materials,the value of environmental factor F under such relief temperature is obtained through calculation. This value is used to correct the maximum relief capacity. Safety valves,valve lines and process valves of different sizes are selected finally. After making inquiries and comparing the cost price,a low-cost solution is chosen for design,procurement and manufacturing. The results show that selecting aluminium silicate wool as the insulation material can decrease the value of environmental factor F obviously. Thus,the procurement cost of valves and pipelines are decreased relevantly. However,the cost of aluminium silicate wool is comparatively high,so the best solution shall be determined according to the economic analysis method introduced in this paper.
引文
[1]API STD 521-2014 Pressure-relieving and depressuring systems[S].
[2]杨天宇,朱海山,郝蕴,等.压力容器火灾工况安全泄放质量流量的动态研究[J].石油与天然气化工,2014,43(2):208-212.
[3]刘茜,李春磊.海洋平台压力容器安全阀最大泄放量的确定[J].船海工程,2013,42(3):182-187.
[4]陈文峰,刘培林,郭洲,等.复杂物系压力容器安全阀泄放过程的HYSYS动态模拟[J].天然气与石油,2010,28(6):55-58.
[5]冯传令,杨勇.原油容器安全阀火灾工况泄放量动态模拟[J].石油工程建设,2006,32(6):46-48.
[6]王江峰.超临界压力下火灾工况安全阀泄放量的计算[J].化工设计,2010,20(1):29-32.
[7]曹颜玉.换热器管程破裂工况下安全阀泄放量计算[J].石油化工设计,2015,32(2):10-12.
[8]张建华,高耸.特殊工况安全阀泄放量的计算[J].石油化工安全环保技术,2012,28(5):21-22.
[9]李宏君,杨宗焜,杨玉楠,等.节能建筑的防火安全问题[J].节能技术,2011,29(3):285-288.
[10]李雅侠,田晓行.列表法计算发电厂蒸汽管道双层保温经济厚度[J].节能技术,2006,24(6):566-568.
[11]GB 50264—2013工业设备及管道绝热工程设计规范[S].北京:中国计划出版社,2013.
[2]杨天宇,朱海山,郝蕴,等.压力容器火灾工况安全泄放质量流量的动态研究[J].石油与天然气化工,2014,43(2):208-212.
[3]刘茜,李春磊.海洋平台压力容器安全阀最大泄放量的确定[J].船海工程,2013,42(3):182-187.
[4]陈文峰,刘培林,郭洲,等.复杂物系压力容器安全阀泄放过程的HYSYS动态模拟[J].天然气与石油,2010,28(6):55-58.
[5]冯传令,杨勇.原油容器安全阀火灾工况泄放量动态模拟[J].石油工程建设,2006,32(6):46-48.
[6]王江峰.超临界压力下火灾工况安全阀泄放量的计算[J].化工设计,2010,20(1):29-32.
[7]曹颜玉.换热器管程破裂工况下安全阀泄放量计算[J].石油化工设计,2015,32(2):10-12.
[8]张建华,高耸.特殊工况安全阀泄放量的计算[J].石油化工安全环保技术,2012,28(5):21-22.
[9]李宏君,杨宗焜,杨玉楠,等.节能建筑的防火安全问题[J].节能技术,2011,29(3):285-288.
[10]李雅侠,田晓行.列表法计算发电厂蒸汽管道双层保温经济厚度[J].节能技术,2006,24(6):566-568.
[11]GB 50264—2013工业设备及管道绝热工程设计规范[S].北京:中国计划出版社,2013.