基于热化学储热的废气余热回收

doi:10.3976/j.issn.1002-4026.20240086

山东科学 ›› 2025, Vol. 38 ›› Issue (4): 118-129.doi: 10.3976/j.issn.1002-4026.20240086

基于热化学储热的废气余热回收

董兆一¹^,²(), 王聪³^,^*()

1.内蒙古中电储能技术有限公司,内蒙古呼和浩特 010020
2.国能信控互联技术有限公司,北京 102209
3.齐鲁工业大学(山东省科学院) 能源研究所,山东济南 250014

收稿日期:2024-07-13 出版日期:2025-08-20 发布日期:2025-08-05
通信作者: 王聪 E-mail:cupwangcong@163.com;wangc100@qlu.edu.cn
作者简介:董兆一(1976—),男,博士,研究方向为综合能源系统集成与开发。E-mail: cupwangcong@163.com
基金资助:
国家自然科学基金(52076113);山东省自然科学基金(ZR2021QE025)

Research on waste heat recovery using thermochemical heat-storage materials

DONG Zhaoyi¹^,²(), WANG Cong³^,^*()

1. Inner Mongolia CEES Energy Storage Technology Co., Ltd.,Hohhot 010020, China
2. CHN Energy I &C Interconnection Technology Co., Ltd.,Beijing 102209, China
3. Energy Research Institute, Qilu University of Technology (Shandong Academy of Sciences),Jinan 250014, China

Received:2024-07-13 Online:2025-08-20 Published:2025-08-05
Contact: WANG Cong E-mail:cupwangcong@163.com;wangc100@qlu.edu.cn

摘要/Abstract

摘要：

为解决能源短缺的问题,余热资源的回收和利用受到越来越多的重视,其中工业低品位余热尤为突出。传统整体式余热吸附床传热缓慢、升温不均等问题严重影响和制约了余热存储的效率,由此提出了一种错位交叉吸附床,利用热化学水合盐储热的方法对低品位余热进行回收。结果表明,该吸附床的储热速率是传统吸附床的3倍。在传热方面有效抑制了吸附床前后部分材料受热时长不均的问题;在传质方面,多方向传质能减少水蒸气与材料的接触时间,规避了水蒸气与储热材料二次水合的条件。因此,错位交叉吸附床具有独特的热传质优势,本研究为废弃余热回收的吸附储热吸附床的设计和改进提供一种新的思路。

关键词: 低品位余热, 水合盐, 储热, 热传质

Abstract:

To address the energy shortages problem, in addition to developing new and renewable energy sources, the recovery and utilization of waste heat resources have gained increasing attention, particularly low-grade industrial waste heat. Traditional integrated waste heat adsorption beds suffer from slow heat transfer and uneven temperature distribution, severely limiting the efficiency of waste heat storage. This study proposes a staggered adsorption bed that utilizes thermochemical hydration salts for low-grade waste heat recovery. Results show that the heat-storage rate of this adsorption bed is three times that of traditional adsorption beds. In terms of the heat transfer, it effectively mitigates the issue of uneven heating duration of materials across the adsorption bed. In terms of the mass transfer, a multidirectional mass transfer reduces the contact time between water vapor and materials, avoiding conditions for the secondary hydration of heat-storage materials. Therefore, the “staggered adsorption bed” has unique advantages in heat and mass transfer, providing a novel approach for the design and improvement of adsorption heat-storage beds for waste heat recovery.

Key words: low-grade waste heat, hydrated salts, heat storage, heat and mass transfer

中图分类号:

TK02

董兆一, 王聪. 基于热化学储热的废气余热回收[J]. 山东科学, 2025, 38(4): 118-129.

DONG Zhaoyi, WANG Cong. Research on waste heat recovery using thermochemical heat-storage materials[J]. Shandong Science, 2025, 38(4): 118-129.

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项目名称	域单元/个	边界单元/个	边单元/个	吸附床中心点温度/K	吸附床中心点速度/(m·s^-1)
Case1	57 956	7 872	727	358.45	0.045 2
Case2	80 270	9 356	810	358.73	0.045 5
Case3	127 346	16 908	1 114	358.85	0.045 7
Case4	182 988	15 560	1 028	358.90	0.045 8

基于热化学储热的废气余热回收

Research on waste heat recovery using thermochemical heat-storage materials

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