摘要
天然气在一次能源中的应用率越来越高,液化天然气(LNG)行业也随之得到快速发展。以某LNG实际组分为例,利用HYSYS以及各种流态下的流体传热原理,通过对LNG物性、浸没燃烧式气化器(SCV)结构、流体传热以及管程压降等进行分析,对SCV进行了工艺设计计算,结果为:(1)SCV总传热系数可达763.41 W/(m^2·K)。(2)所需理论换热面积为854.62m2,设计结构下的实际换热面积为957.56m^2。(3)SCV管程压降为24.904kPa。计算结果表明此SCV换热效率较高、管内流体流态正常及设计结构合理,可满足换热要求。此设计结构与类似工况进口设备的换热面积及结构形式基本一致,结果可为SCV研发提供一定的基础数据,并对同类型设备的研发、优化设计以及使用操作具有参考意义。
The utility ratio of natural gas in primary energy is getting higher and higher. Main while, liquefied natural gas （LNG） industry is developing rapidly. To provide data reference and technical supports to LNG vaporization key equipments, and taking an actual LNG process unit as example, a submerged combustion vaporizer （SCV） has been studied. Using HYSYS process simulation software and the heat transfer principles for all kinds of flow states, through the analysis and calculation of LNG physical property, the structure of SCV, fluid heat transfer, and tube side pressure drop, it is found that, ①The overall heat transfer coefficient of the SCV is up to 763.41 W/（m^2·K）. ②The theory heat exchange area is about 854.62 m^2 , and the actual heat transfer area in this example is 957. 56 m^. ③The tube side pressure drop of the SCV is only 24. 904 kPa. It shows that the heat exchange efficiency is preferable, the fluid flow distribution is normal, the equipment structure is reasonable and it meets the requirements of heat exchange.These calculated results are consistent with those of the imported equipment. It provides the ba- sis for the research and development of SCV data reference and powerful technical support. It al- so has the reference significance to the research, development, optimization and operation of the similar equipment.
作者
芦德龙
张尚文
文晓龙
周少斌
李金波
武艳波
荀娇
吕甜甜
LU De-long ZHANG Shang-wen WEN Xiao-long ZHOU Shao-bin LI Jin-bo WU Yan-bo XUN Jiao LU Tian-tian(Lanpec Technologies Limited, Lanzhou 730070, China Shanghai Lanbin Petrochemical Equipment Co. Ltd. , Shanghai 201518, China)
出处
《石油化工设备》
CAS
2017年第4期17-22,共6页
Petro-Chemical Equipment
关键词
液化天然气
浸没燃烧式气化器
HYSYS
工艺计算
liquefied natural gas
submerged combustion vaporizer
HYSYS
process design and calculation
