Performance analysis of adsorbents for adsorptive storage of boil-off gas from shipborne LNG

LIN Qingshan; WEN Xin; ZHENG Qingrong; SU Jingyu; GUO Yifan

doi:10.12434/j.issn.2097-2547.20250503

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Performance analysis of adsorbents for adsorptive storage of boil-off gas from shipborne LNG

更新时间：2026-06-05

- Performance analysis of adsorbents for adsorptive storage of boil-off gas from shipborne LNG
- Pages: 1-11(2026)
- 作者机构：
  
  1.集美大学轮机工程学院福建省船舶与海洋工程重点实验室，福建厦门 361021
  2.集美大学海洋文化与法律学院，福建厦门 361021
- 作者简介：
- 基金信息：
- DOI：10.12434/j.issn.2097-2547.20250503
  CLC： TE8;O647.3
- Received：30 December 2025，
  
  Revised：2026-02-02，
  
  Online First：02 June 2026，
- 稿件说明：
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林青山,温馨,郑青榕等.船舶LNG蒸发气吸附储存用吸附剂的性能分析[J].低碳化学与化工,

LIN Qingshan,WEN Xin,ZHENG Qingrong,et al.Performance analysis of adsorbents for adsorptive storage of boil-off gas from shipborne LNG[J].Low-Carbon Chemistry and Chemical Engineering,
林青山,温馨,郑青榕等.船舶LNG蒸发气吸附储存用吸附剂的性能分析[J].低碳化学与化工, DOI：10.12434/j.issn.2097-2547.20250503.

LIN Qingshan,WEN Xin,ZHENG Qingrong,et al.Performance analysis of adsorbents for adsorptive storage of boil-off gas from shipborne LNG[J].Low-Carbon Chemistry and Chemical Engineering, DOI：10.12434/j.issn.2097-2547.20250503.

摘要

为提高船舶LNG的安全性和经济性，提出了对LNG蒸发气（BOG）进行吸附并将其作为船舶推进系统燃料供应主路的技术方案。选择内河运输的LNG船舶，就其配装的燃料供应系统及容量为5 m

的 C型储罐，运用HYSYS软件建立燃料供应系统模型，计算储罐充装率为20%~90%时BOG的温度和压力的变化曲线。选择AX-21活性炭、由溶剂热法制备的MIL-101(Cr)和HKUST-1试样，测试了77.15 K氮在试样上的吸/脱附等温线，并在与BOG对应的温度区间和压力范围内，测试了甲烷在试样上的吸附等温线。结合试样主要织构参数表征与XRD、SEM分析，并通过吸附模型预测精度分析，甲烷在试样上的极限吸附热、等量吸附热及可利用容量（UC）计算，比较了甲烷在试样上的吸附性能。结果表明，储罐内BOG温度和压力的变化趋势与充

装率有关，充装率由20%增大至90%时，储罐内BOG的安全存储时间延长了1.8倍；罐内BOG温度和压力的变化范围为160~163 K和0~1.1 MPa；对于BOG中甲烷在试样上的吸附平衡，相比D-A方程，Toth方程对吸附平衡数据的预测精度提高了约2.49倍；甲烷在MIL-101(Cr)上具有最大的吸附热和UC。对于船舶LNG中BOG的吸附储存，选择MIL-101(Cr)具有合理性。

Abstract

In order to improve the safety and economy of shipborne LNG

a technical scheme for adsorbing boil-off gas (BOG) from LNG and using it as the main fuel supply route of the ship propulsion system was proposed. An inland LNG transportation ship was selected

and based on its equipped fuel supply system and a C-type storage tank (in volume about 5 m

a fuel supply system model was established by using HYSYS to calculate the variation curves of BOG temperature and pressure when the tank filling ratio was 20%~90%. AX-21 activated carbon

as well as MIL-101(Cr) and HKUST-1 samples prepared by solvothermal method

were selected

and their nitrogen adsorption/desorption isotherms at 77.15 K were tested. Methane adsorption isotherms were also measured within the temperature and pressure ranges corresponding to those of the BOG. Combined with the characterization of the main textural parameters of the samples and XRD and SEM analyses

together with prediction accuracy analyses of adsorption models

the limit isosteric heat of adsorption

isosteric heat of adsorption and usable capacity (UC) of methane on the samples were calculated to compare the adsorption performances of methane on the samples. The results show that the variation trends of the temperature and pressure of the BOG in the storage tank are related to the filling ratio. When the filling ratio increases from 20% to 90%

the safe storage duration of BOG in the tank is prolonged by 1.8 times; the variation ranges of the temperature and pressure of the BOG in the tank are 160 K to 163 K and 0 MPa to 1.1 MPa

respectively. For the adsorption equilibrium of methane in BOG on the samples

compared with that of the D-A equation

the prediction accuracy of the Toth equation for adsorption equ

ilibrium data is improved by about 2.49 times. Methane on MIL-101(Cr) exhibits the largest adsorption heat and UC. For the adsorptive storage of BOG in shipborne LNG

selecting MIL-101(Cr) is reasonable.

关键词

Keywords

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