燃气技术GasTechnology doi:10.3969/j.ssn.16715152.2016.04.004
中小型液化天然气站冷能回收装置的设计及应用
口上海源天化工气体有限公司（201801）姚钰锋吴竺张冬露
摘要：本文介绍了一种适用于中小型单点直供式的液化天然气站冷能回收装置的设计及应用实
例，利用该装置可以替代空温、水浴等传统形式的气化器，装置收的冷能可以供给厂区工艺冷冻水或厂房、办公楼制冷等用。装置采用板壳式换热器两级换热，液化天然气的冷能由载冷剂带走，载冷剂再与冷冻水换热将冷能传递给冷冻水，过程中载冷剂通过蒸发和冷凝过程形成无动力的自主循环。该装置目前已在多个项目中得到应用，节能效果显著。
关键词：液化天然气冷能回收两级换热自主循环设计及应用
DesignandApplicationofSmallandMediumSizedLiquefiedNatural
GasStationColdEnergyRecoveryDevice
YaoYufeng,WuZhu,ZhangDongxia
Abstract:This paper introduces the design and application of small and medium sized liquefied natural
gas station cold energy recovery equipment, this equipment can replace the traditional vaporizers, such as air vaporizer and water bath vaporizer. The cold energy recovered by this equipment can be used to cooling the factory cold water or supply cold energy tofactory and its officebuilding.This equipment adopts plate shell heat exchanger and two-stage heat exchange, the cold energy of liquefied natural gas taken by refrigerant, then refrigerant transfer the cold energy to the cold water, in this process the refrigerant is running spontaneous circulation by its vaporization and condensation with no additional energy input. Currently, this equipment is a
Keywords:liquefied natural gas stationcold energyrecoverytwo-stageheat exchange
spontaneous circulationdesign and application
1概述
液化天然气（以下简称LNG）是将天然气经脱水、脱酸、去除重烃后降温液化而成的低温液体（常
241城市燃气2016/04总第494期万方数据
压下饱和温度约为-162℃），主要成分为甲烷，在使用时要经过气化装置吸热重新转化为常温气体供终端用气装置使用。近几年，随着我国大气污染防治计划以及各地煤改气政策的大力实施，尤其是LNG与管道