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Energy-saving Optimization and Application Practice of Compressed Air System for Papermaking Enterprises
Received:August 19, 2025  Revised:September 28, 2025
DOI：10.11980/j.issn.0254-508X.2025.11.028
Key Words:compressed air system  energy-saving  household paper  economic benefits
Author NameAffiliationPostcode
WU Daxu* China CEC Engineering Corporation,Changsha, Hu’nan Province, 410114 410114
LI Wenbin China CEC Engineering Corporation,Changsha, Hu’nan Province, 410114 410114
LI Defang School of Chemistry and Pharmaceutical Engineering, Changsha University of Science & Technology, Changsha, Hu’nan Province, 410114 410114
LIN Yahui School of Chemistry and Pharmaceutical Engineering, Changsha University of Science & Technology, Changsha, Hu’nan Province, 410114 410114
WANG Yulong* School of Chemistry and Pharmaceutical Engineering, Changsha University of Science & Technology, Changsha, Hu’nan Province, 410114 410114
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Abstract:As the core power source in the production process of household paper enterprises， the energy consumption of compressed air systems has become increasingly prominent. This paper took a large household paper enterprise as an example and analyzed the existing problems in its compressed air system， including equipment efficiency， drying system configuration， and intelligent control. In response to these issues， a hierarchical optimization plan had been proposed， including measures such as the adoption of high-efficiency permanent magnet variable frequency air compressors， zero-gas-consumption compression heat dryers， and intelligent control systems. After optimization and upgrading， the average specific power of the system decreased from 7.9 kW/(m3·min) to 5.6 kW/(m3·min)， achieving an energy-saving rate of 29.1%. The annual electricity savings reached 5.002 million kWh， generating annual benefits of 3.501 million yuan， with significant energy-saving and economic benefits.
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