CO<sub>2</sub>直接空气捕集用TVSA与S-TVSA循环的实验研究

赵俊德; 郑家乐; 周爱国; 葛天舒

doi:10.12434/j.issn.2097-2547.20240449

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CO₂直接空气捕集用TVSA与S-TVSA循环的实验研究

更新时间：2025-03-31

- CO₂直接空气捕集用TVSA与S-TVSA循环的实验研究
- Experimental study on TVSA and S-TVSA cycles for CO₂ direct air capture
- 低碳化学与化工 2025: 1-9.
- 作者机构：
  
  1.中国石油安全环保技术研究院有限公司，北京 102206
  2.上海交通大学制冷与低温工程研究所，上海 200240
- 作者简介：
  
  赵俊德（2000—），硕士研究生，研究方向为直接空气碳捕集过程中的热质传递，E-mail：zhaojunde@sjtu.edu.cn。
  周爱国（1963—），本科，教授级高级工程师，研究方向为CCUS全产业链技术，E-mail：zhou65@petrochina.com.cn；
  葛天舒（1982—），博士，教授，研究方向为直接空气碳捕集、固体除湿空调和低品位能源（太阳能）的高效转换和利用，E-mail：baby_wo@sjtu.edu.cn。
- 基金信息：
  
  国家自然科学基金(52376011);中国石油集团科技项目(2022DJ6607)
- DOI：10.12434/j.issn.2097-2547.20240449
  中图分类号： TQ116;X701
- 收稿日期：2024-11-07，
  
  修回日期：2024-12-06，
  
  网络出版日期：2025-03-27，
- 稿件说明：
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赵俊德,郑家乐,周爱国等.CO₂直接空气捕集用TVSA与S-TVSA循环的实验研究[J].低碳化学与化工,

ZHAO Junde,ZHENG Jiale,ZHOU Aiguo,et al.Experimental study on TVSA and S-TVSA cycles for CO₂ direct air capture[J].Low-carbon Chemistry and Chemical Engineering,
赵俊德,郑家乐,周爱国等.CO₂直接空气捕集用TVSA与S-TVSA循环的实验研究[J].低碳化学与化工, DOI：10.12434/j.issn.2097-2547.20240449.

ZHAO Junde,ZHENG Jiale,ZHOU Aiguo,et al.Experimental study on TVSA and S-TVSA cycles for CO₂ direct air capture[J].Low-carbon Chemistry and Chemical Engineering, DOI：10.12434/j.issn.2097-2547.20240449.

摘要

为实现“碳中和”目标，CO

直接空气捕集（DAC）技术获得越来越多的关注。设计并构建了吸附式直接空气捕集系统，选用伯胺嫁接类离子交换树脂CO

吸附剂，在采用相同吸附床工况下，针对变温真空吸附（TVSA）和蒸汽辅助吸附（S-TVSA）两种典型的热力循环开展了对比实验研究。结果表明，当环境温度为20~32 ℃时，两种循环模式均可实现大于50%的CO

捕集率，并获得纯度（物质的量分数）高于90%的CO

产品气。在100~120 ℃水蒸气以1 m

/h持续通入的脱附条件下，S-TVSA循环的CO

生产率可达0.33 kg/(kg·d)，远高于TVSA循环（再生温度70 ℃，真空压力为3 kPa）的生产率（0.15 kg/(kg·d)）。S-TVSA循环的再生能耗远低于TVSA循环，每产出1 t CO

，S-TVSA循环的再生能耗为3.56 GJ，仅

为TVSA循环的1/6。研究结果表明，采用所选固态胺吸附剂时，在相近环境条件和相同循环周期内，S-TVSA循环的传热传质效率更高，脱附过程相对彻底，吸附剂的吸附潜能充分发挥，相比TVSA循环更具优势。

Abstract

To achieve the goal of “carbon neutrality”

direct air capture (DAC) technology is receiving increasing attention. The adsorption-based direct air capture system was designed and constructed

utilizing a primary amine-grafted ion exchange resin as the CO

adsorbent. Under the same adsorption bed conditions

a comparative experimental study was conducted on two typical thermal cycles: Temperature vacuum swing adsorption (TVSA) and steam-assisted temperature vacuum swing adsorption (S-TVSA). The experimental results show that

at an ambient temperature of 20~32 ℃

both cycle modes can achieve more than 50% CO

capture ratio and obtain CO

product gas with purity (mole fraction) higher than 90%. Under the desorption condition of 100~120 ℃ continuous steam fed at a flow rate of 1 m

the product gas productivity of the S-TVSA cycle can reach 0.33 kg/(kg·d)

which is much higher than that of TVSA cycle under regeneration temperature of 70 ℃ and vacuum pressure of 3 kPa (0.15 kg/(kg·d)). The regeneration energy consumption of the S-TVSA cycle is much lower than that of the TVSA cycle

with 3.56 GJ per 1 t CO

output

which is only 1/6 of that of the TVSA cycle. The results indicate that when using the selected amine-adsorbent

under similar environmental conditions and the same cycle period

the heat and mass transfer efficiency of the S-TVSA cycle is higher

and the desorption process is relatively more thorough. The adsorption potential of the adsorbent in the S-TVSA cycle is fully utilized

which is more advantageous than the TVSA cycle.

关键词

Keywords

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CO2直接空气捕集用TVSA与S-TVSA循环的实验研究

Experimental study on TVSA and S-TVSA cycles for CO2 direct air capture

DOI：10.12434/j.issn.2097-2547.20240449

摘要

Abstract

关键词

Keywords

references

CO₂直接空气捕集用TVSA与S-TVSA循环的实验研究

Experimental study on TVSA and S-TVSA cycles for CO₂ direct air capture