An energy-saving assessment approach for hood retrofitting in multi-cylinder dryer sections

Yin, Yongjun; Li, Jigeng; Liu, Huanbin; Chen, Xiaobin

doi:10.1080/07373937.2016.1142452

Cited by 4 publications

(6 citation statements)

References 10 publications

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“…Generally, from the perspective of energy utilization, drying section can be divided into steam condensate system and ventilation system [7], as shown in Fig. 1.…”

Section: System Configuration Of a Typical Ventilation Systemmentioning

confidence: 99%

“…So, as new technologies or upgraded production lines adopted, how to further reduce the energy consumption and improve the energy efficiency is an urgent problem for papermaking workers. Drying section is the largest energy consumption part in the papermaking process, accounting for more than 67% of the total energy consumption [6,7], and its energy efficiency has an important influence on the energy consumption of papermaking process. Ventilation system is used to remove the evaporated vapor around the sheet to maintain a high drying rate.…”

Section: Introductionmentioning

confidence: 99%

“…found that the drying rate mainly depends on the heat transfer on the paper surface, and transferring hot air to the drying surface effectively can improve the drying rate [13]. Kong [14] and Nejad [7] studied the effects of different operating parameters (input dryness and temperature, supply air temperature, exhaust humidity, etc.) on drying performance.…”

Section: Introductionmentioning

confidence: 99%

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Modeling of Ventilation’s Influence on Energy Consumption in Multi-cylinder Dryer Section Part1: Theoretical Model

Yin

Liu

Wang

et al. 2022

Int J Comput Intell Syst

Self Cite

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Ventilation system affects the water evaporation rate, energy consumption and the paper quality, which is considered as the largest optimization potential part of multi-cylinder dryer section. Energy consumption of drying system is divided into three parts: steam consumption of cylinders, steam consumption of air heaters, power consumption of blowers and exhaust fans. An energy consumption model of drying system integrating steam condensation system and ventilation system is constructed according to the control logic and process flow of the actual ventilation system, by combining the established models of each module and energy consumption indexes. It is the premise to realize the intelligent control of paper drying process. The research results perfects the mechanism of ventilation system for assisted drying, which can promote the improvement of the monitoring, and enable intelligent computing technology to play a greater role in optimizing drying operation and reducing drying energy consumption.

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“…Generally, from the perspective of energy utilization, drying section can be divided into steam condensate system and ventilation system [7], as shown in Fig. 1.…”

Section: System Configuration Of a Typical Ventilation Systemmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Modeling of Ventilation’s Influence on Energy Consumption in Multi-cylinder Dryer Section Part1: Theoretical Model

Yin

Liu

Wang

et al. 2022

Int J Comput Intell Syst

Self Cite

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“…[162][163][164][165][166][167] Exergy analysis was use to increase waste heat recovery reducing the energy use by 4.6%, [162] optimizing the process parameters for a newsprint machine reduced steam consumption by 8%, [163] a detailed static model of the paper dryer showed that the air supply temperature could be reduced from 112 to 100 C resulting in a specific heat reduction by 3.3%. [164] Chen et al [165][166][167] performed a similar detailed analysis of the dryer section showing that the total steam consumption for one machine could be reduced from 1.82 to 1.50 ton of steam per ton of water evaporated. One reason for this rather large reduction is the high initial steam consumption indicating a nonenergy optimized paper dryer operation.…”

Section: Energy Usementioning

confidence: 99%

“…One reason for this rather large reduction is the high initial steam consumption indicating a nonenergy optimized paper dryer operation. By modifying a hood from semiclosed to closed, Yin et al [167] showed that the steam consumption could be reduced by 12.9% and the power consumption by 14.2% for a specific dryer.…”

Section: Energy Usementioning

confidence: 99%

Drying of paper: A review 2000–2018

Stenström

2019

Drying Technology

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Drying of paper during 2000-2018 is reviewed. The review includes new drying processes, multi-cylinder dryers, tissue and impingement drying, TAD-drying, infrared drying and energy use for drying of paper. It includes general aspects of infrared dryers but not drying of coated papers. Paper quality aspects, paper shrinkage and paper isotherms are not included. Impingement drying has been the most successful new technology with several applications while others such as impulse drying has not been commercialized mainly due to problems with paper quality parameters. One promising development is the introduction of steel instead of cast iron cylinders with increased heat transfer reducing the number of cylinders. Future research should focus on modeling the internal transport phenomena and to couple these phenomena to paper shrinkage and quality parameters. The influence of the fabric for the drying process needs more attention, understanding the drying process for new components such as microfibrillar cellulose in the stock and reducing energy use and increasing the amount of renewable energies for drying of paper.

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Techno-economic assessment for black liquor concentration system of chemical pulp integrating mechanical vapor recompression

Liu,

Yang,

Jia

et al. 2023

Sustainable Energy Technologies and Assessments

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An energy-saving assessment approach for hood retrofitting in multi-cylinder dryer sections

Cited by 4 publications

References 10 publications

Modeling of Ventilation’s Influence on Energy Consumption in Multi-cylinder Dryer Section Part1: Theoretical Model

Modeling of Ventilation’s Influence on Energy Consumption in Multi-cylinder Dryer Section Part1: Theoretical Model

Drying of paper: A review 2000–2018

Techno-economic assessment for black liquor concentration system of chemical pulp integrating mechanical vapor recompression

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