一种船用吸收法碳捕集系统及其优化方法

By optimizing the marine absorption carbon capture system, utilizing flue gas pretreatment and waste heat recovery units to recover sensible heat from engine flue gas, and combining the absorption CO2 capture unit and CO2 compression and drying unit, the high energy consumption problem in existing technologies is solved, achieving efficient CO2 capture and treatment, which is suitable for marine environments.

CN121891927BActive Publication Date: 2026-07-17SHANGHAI JIAOTONG UNIV
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
SHANGHAI JIAOTONG UNIV
Filing Date
2026-03-25
Publication Date
2026-07-17

AI Technical Summary

Technical Problem

Existing marine carbon capture systems using absorption methods are energy-intensive and struggle to fully utilize the sensible heat from ship engine exhaust without the need for external fuel or additional electric heating sources, resulting in low energy efficiency and poor overall system economy and engineering feasibility.

Method used

By optimizing a marine absorption carbon capture system without introducing external fuel or additional electric heating sources, the system utilizes flue gas pretreatment and waste heat recovery units to recover the sensible heat of high-temperature flue gas discharged from marine engines. Combined with an absorption CO2 capture unit and a CO2 compression and drying unit, a multi-objective optimization algorithm is used to optimize the structural parameters and operating variables of the absorption tower and desorption tower, thereby achieving a heat-self-sufficient integrated system.

Benefits of technology

It significantly reduces the overall energy consumption of marine carbon capture systems, improves carbon capture efficiency, and achieves efficient capture, desorption, and compression drying of CO2, making it suitable for space-constrained marine environments.

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Abstract

本申请公开了一种船用吸收法碳捕集系统的优化方法，所述方法包括以下步骤：建立所述船用吸收法碳捕集系统的热力学模型，所述热力学模型模拟所述吸收法CO2捕集单元的基于溶剂的吸收解吸反应循环；基于所述热力学模型，采用多目标优化算法对所述系统的吸收塔和解吸塔的结构参数进行第一层优化；在所述吸收塔与解吸塔的结构参数确定后，采用遗传算法以船用碳捕集效率度为目标函数对所述系统的关键操作变量进行第二层优化，从而获得船用碳捕集效率度最大值，该方法通过在在不引入外部燃料或额外电加热源的约束条件下进行船用吸收法碳捕集系统优化，获得能够充分利用船舶发动机烟气余热、实现吸收法CO2捕集与压缩过程热量自给的集成系统。
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Citation Information

Patent Citations

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