CO2 Emissions Reduction and Energy Efficiency Improvements in Paper Making Drying Process Control by Sensors
نویسندگان
چکیده
The drying process of paper has many production parameters that can influence both the energy consumed and the characteristics of paper produced. It was found that most of the previous studies conducted on this process assume that the conditions of the facilities are always appropriate. The control of the variables associated with air circulating inside the drying hood is essential to obtain a paper with adequate quality and obtain low ratios of energy consumption and CO2 emissions. This article proposes a new indirect method based on the study of the enthalpy of the airflows inside the production hall and thermographic images that helps to analyze the maintenance state of the enclosure hood drying section in a general process, whereby it can also estimate the emissions and energy losses. The combined use of sensors and equipment has helped to identify energy losses and potential savings in CO2 emissions. The developed method is applied to a paper manufacturing plant that has ratios of energy consumption and CO2 emissions very close to the product benchmark set by the European Authorities. The study corroborates that it can be identified as a significant energy loss in paper making drying process. Analyzing facilities that are in apparently good maintenance conditions, leaks are evident. These energy losses are very significant compared with the theoretical energy consumption, and it can affect the paper moisture profile.
منابع مشابه
Analysis of alternative secondary heat uses to improve energy efficiency – Case: mechanical pulp and paper mill
This paper discusses different possibilities to reduce primary energy consumption and CO2 emissions by increasing the energy efficiency of an integrated process plant. Firstly, possible opportunities for heat saving inside a mill were analyzed. After that, optional uses for the recovered amount of heat were identified. The effects of change were then evaluated. The primary evaluation criteria w...
متن کاملEstimation of potential energy saving and carbon dioxide emission reduction in China based on an extended non-radial DEA approach
In the process of setting operational targets to achieve sustainable development of economy, environment and natural resources, estimation of potential energy saving and potential CO2 emission reduction becomes extremely important. This estimation can be conducted based on the energy efficiency evaluation for different decision-making units (DMUs) by data envelopment analysis (DEA). Non-fossil ...
متن کاملComparative Energy and Exergy Analysis for the Utilization of Alternative Fuels in the Cement Kiln
The cement industry is one of the most energy and carbon-intensive industries. The energy and carbon reduction is an important issue in this industry. The present work considers the use of alternative fuels in the cement kilns. The amounts of excess air, the location of fuel and air entrance, as well as the amount of produced gas stacks, are the main design and operational variables in the kiln...
متن کاملUsing system dynamics approach to identify factors affecting energy consumption and CO2 emissions in urban transport: A Case Study of Tehran
The current trend of rising energy consumption in the world has hit mankind with two major crises: first, environmental pollution, and second, the acceleration of finishing energy supplies. Energy storage and reduction of pollutants in the city plays a crucial role in the process of maintaining existing energy. Meanwhile, the transportation sector needs attention due to its importance and posit...
متن کاملWireless Sensors and Networks for Advanced Energy Management
Numerous national studies and working groups have identified low-cost, very low-power wireless sensors and networks as a critical enabling technology for increasing energy efficiency, reducing waste, and optimizing processes. Research areas for developing such sensor and network platforms include microsensor arrays, ultra-low power electronics and signal conditioning, data/control transceivers,...
متن کامل