Energy efficiency improvement for industrial boilers through a flue-gas condensing heat recovery system with nonlinear MPC approach

被引:8
|
作者
Rastegarpour, Soroush [1 ]
Mariotti, Andrea [2 ]
Ferrarini, Luca [3 ]
Aminyavari, Mehdi [4 ]
机构
[1] ABB Corp Res, Dept Automat Technol, S-72178 Vasteras, Sweden
[2] Dept Energy, Politecn Milano, I-20133 Milan, Italy
[3] Politecn Milan, Dipartimento Elettron Informaz & Bioingn, I-20133 Milan, Italy
[4] Cannon Grp Bono Energia SpA, I-20068 Peschiera Garda, Italy
关键词
Condensing heat exchanger; Constrained optimal observer; Energy efficiency; Heat accumulation system; Nonlinear MPC; MODEL-PREDICTIVE CONTROL; GLOBAL WASTE HEAT;
D O I
10.1016/j.applthermaleng.2023.120554
中图分类号
O414.1 [热力学];
学科分类号
摘要
Recovering waste heat from boiler's exhaust flue gas has proven to be an effective way to improve energy efficiency in industrial boilers. Generally, a hydraulic design based on Condensing heat exchangers (CHXs) that boosts startup efficiency by increasing feed-water temperature and condensation rate in the CHX is suggested. In this paper, an innovative coupled CHX and heat accumulation system is presented. A detailed 1-D reference model of the system is formulated and validated by experimental data. Although the mentioned innovative heat recovery system alone is able to enhance the boiler's efficiency, the optimal performance extremely depends on the way it is operated. Furthermore, accurately estimating and predicting the condensation heat of the CHX is crucial for enhancing efficiency, yet the task is challenging due to the vapor content's phase change in the flue gas. To address these issues, a Nonlinear Model Predictive Controller (NMPC) is implemented, which utilizes a constrained optimal observer to handle the system's hybrid behavior. The performance of the proposed NMPC is evaluated against Linear MPC and conventional PID control. Results show that the proposed approach provides 48 [kg/h] saving in fuel consumption, which is about 6% more than the heuristic approach and 3.5% more than linear MPC technique.
引用
收藏
页数:15
相关论文
共 50 条
  • [21] The Thermal Economy of a Circulating Medium and Low Temperature Waste Heat Recovery System of Industrial Flue Gas
    Wang, Xutong
    Zhang, Meng
    INTERNATIONAL JOURNAL OF HEAT AND TECHNOLOGY, 2021, 39 (05) : 1680 - 1688
  • [22] Waste heat and water recovery from natural gas boilers: Parametric analysis and optimization of a flue-gas-driven open absorption system
    Wang, Zhenying
    Zhang, Xiaoyue
    Han, Jianfeng
    Li, Zhen
    ENERGY CONVERSION AND MANAGEMENT, 2017, 154 : 526 - 537
  • [23] Energy efficiency improvement through MPC-based peripherals management for an industrial process test-bench
    Bermeo, Miguel A.
    Ocampo-Martinez, Carlos
    IFAC PAPERSONLINE, 2019, 52 (13): : 648 - 653
  • [24] Effect of flue gas condensing waste heat recovery and its pressure drop on energy saving and carbon reduction for refinery heating furnace
    Mu, Lianbo
    Wang, Suilin
    Lu, Junhui
    Liu, Guichang
    Zhao, Liqiu
    Lan, Yuncheng
    ENERGY, 2023, 279
  • [25] INDUSTRIAL HEAT-RECOVERY PROJECTS SUPPORTED THROUGH THE ENERGY EFFICIENCY DEMONSTRATION SCHEME
    TAYLOR, PB
    WADKIN, JW
    JOURNAL OF HEAT RECOVERY SYSTEMS, 1986, 6 (01): : 83 - 92
  • [26] INCREASING EFFICIENCY OF HEAT-TRANSFER ON COLD END OF A STEAM-GENERATOR WITHOUT CAUSING A RISK TO FLUE-GAS SYSTEM
    SCHINDLER, G
    ENERGIETECHNIK, 1977, 27 (10): : 379 - 380
  • [27] Energy efficiency improvement of a Kraft process through practical stack gases heat recovery
    Goortani, B. Mostajeran
    Mateos-Espejel, E.
    Moshkelani, M.
    Paris, J.
    APPLIED THERMAL ENGINEERING, 2011, 31 (17-18) : 4091 - 4096
  • [28] The Design and Experimental Study of a Deep-Condensing Waste Heat Recovery System for Boiler Flue Gas Based on Baoneng Heating Plant
    Zhang, Shaolin
    Shen, Miao
    Kang, Yuzhen
    Tang, Zhiwei
    PROCESSES, 2025, 13 (02)
  • [29] A decision support system for waste heat recovery and energy efficiency improvement in data centres
    Luo, Yang
    Andresen, John
    Clarke, Henry
    Rajendra, Matthew
    Maroto-Valer, Mercedes
    APPLIED ENERGY, 2019, 250 : 1217 - 1224
  • [30] An innovative method for waste heat recovery from flue gas treatment system through an additional economizer
    Iliev, Iliya krastev
    Kowalczyk, Tomasz
    Beloev, Hristo kvanov
    Terziev, Angel kostadinov
    Jesionek, Krzysztof jan
    Badur, Janusz
    ARCHIVES OF THERMODYNAMICS, 2022, 43 (02) : 37 - 59