แนวคิดหลัก
This article proposes a theoretical dynamic model and energy management strategy for integrating electrified clay calcination plants into sustainable power grids, aiming to reduce emissions and operational costs in cement production.
บทคัดย่อ
The article explores the electrification of clay calcination, a key process in cement production, and presents a theoretical framework to enable its integration with sustainable power grids.
The key highlights are:
Dynamic Modeling of Electrified Clay Calcination Process:
A theoretical dynamic model is introduced to simulate the temperature profiles and energy usage of the electrified calcination process.
The model captures the physical and chemical aspects of the process, including material balances, reaction kinetics, and thermodynamics.
The dynamic model serves as a tool for optimizing parameters, estimating system behavior, and enabling model-based process control.
Energy Management System (EMS) for Cement Plants:
An EMS based on an Optimal Power Flow (OPF) algorithm is proposed to optimize the energy generation and usage within the cement plant.
The EMS considers the plant's power distribution network, flexible and non-flexible loads, and on-site renewable generation (e.g., PV, wind) and storage.
The EMS aims to minimize operational costs, emissions, and voltage deviations, while ensuring the fulfillment of production targets and technical requirements.
Integration of Dynamic Model and EMS:
The dynamic model of the clay calcination process and the EMS are integrated to link the power management of the plant with the electricity requirements of the electrified calcination process.
This framework enables the optimization of energy utilization, considering both the technical constraints of the calcination process and the broader power system dynamics.
The proposed approach aims to provide a pathway towards more sustainable cement production by addressing the technical and economic challenges associated with the electrification of clay calcination and its integration with renewable energy sources and smart energy management strategies.
สถิติ
The cement industry contributes to around 8.0% of the world's CO2 emissions.
Ordinary Portland Cement (CEM I) production emits 0.80 t CO2 / t cement, assuming a coal-fired system.
The calcination of limestone and fuel combustion are the main sources of CO2 emissions in cement production.
คำพูด
"The replacement of fuel combustion with full electrification can further reduce the CO2 footprint from composite cements."
"The use of energy management systems to control dispatchable units (i.e. flexible loads, storage and on-site generation) can help reduce emissions and operational costs."
"The employment of demand response (DR) strategies by the cement plant can help system operators to handle the intermittence of Renewable Energy Sources (RES), supporting the integration of such resources into the power grid."