海上LNG气化器壳程结构优化数值模拟  

Numerical simulation of shell side structure optimization of offshore LNG vaporizer

作　　者：陈海平[1,2] 王振波[2] 黄宇[1] 李强[2] CHEN Haiping;WANG Zhenbo;HUANG Yu;LI Qiang(CNOOC Gas&Power Group,Beijing 100028,China;College of New Energy,China University of Petroleum(East China),Qingdao 266580,Shandong,China)

机构地区：[1]中海石油气电集团有限责任公司,北京100028 [2]中国石油大学(华东)新能源学院,青岛山东266580

出　　处：《天然气化工—C1化学与化工》2022年第5期145-152,共8页Natural Gas Chemical Industry

基　　金：中海石油气电集团有限责任公司科技项目(QIDKY-2020-YFZX-06)。

摘　　要：针对海上液化天然气(LNG)气化器壳程气液两相流掠过换热管束的流动与换热,建立了数值计算模型;通过Fluent软件模拟,分析了壳程流场分布与换热特性;从定性和定量的角度,考察了换热管束排列方式、有无水堰挡板、排气孔孔径及数量等单一结构参数对壳程气液两相流流动与换热的影响。结果表明,相同条件下,叉排换热管束、安装水堰挡板、设置排气孔孔径为20 mm、排气孔数量为5时,壳程换热效果最好。A numerical calculation model was established for the flow and heat exchange of gas-liquid two-phase flow across heat exchange tube bundle in the shell side of the offshore liquefied natural gas(LNG) vaporizer. The ffow field distribution and heat exchange characteristics of the shell side were analyzed through the simulation of Fluent software. From the qualitative and quantitative point of view, the effects of single structural parameters, such as the arrangement of heat exchange tube bundles, the presence or absence of water weir baffles, and the diameter and number of vent holes, on the ffow and heat exchange of gas-liquid two-phase ffow in the shell side were investigated. The results show that under the same conditions, the shell side has the best heat exchange effect when the heat exchange tube bundle is staggered, the water weir baffle is installed, the vent hole diameter is 20 mm,and the number of vent holes is 5.

关 键 词：海上LNG气化器 气液两相流 数值模拟 结构优化 

分 类 号：TE977[石油与天然气工程—石油机械设备] TE83