Study on energy consumption distribution of parallel co⁃rotating twin⁃screw extruder pelletizing system

doi:10.19491/j.issn.1001-9278.2025.02.016

Abstract

Abstract:

In this paper， the energy consumption distribution of an extruder pelletizing component was systematically explored during the preheating and extruding stages. The findings indicated that the barrel set temperature was a pivotal factor influencing the energy consumption of the component during the preheating stage. In the normal extruding stage， the barrel set temperature， feed rate， and screw speed collectively exerted a significant impact on the energy consumption distribution of the extruder pelletizing component. To evaluate the impact of different speeds on the energy consumption of the component comprehensively， two working conditions were subdivided to be a small⁃range speed adjustment at a fixed feed rate and a large⁃range speed adjustment at a fixed main motor operating current.

Key words: twin?screw, extruder, energy consumption, specific energy consumption, energy conservation

CLC Number:

TQ320.5

BI Chao, ZHAO Chong, WANG Binyuan. Study on energy consumption distribution of parallel co⁃rotating twin⁃screw extruder pelletizing system[J]. China Plastics, 2025, 39(2): 86-90.

Figures/Tables 12

Fig.1. Energy consumption of the integrated equipment under different barrel set temperature

Fig.2. Heating energy consumption in the heating and heat preservation stages of the integrated equipment under different barrel set temperature

机筒设定温度/℃	升温阶段时长/s
180	920
190	1 035
200	1 060
210	1 120
220	1 400

Tab.1. Duration of the heating stage at different barrel set temperature

Fig.3. Specific energy consumption of the integrated equipment under different barrel set temperature

Fig.4. Distribution of specific energy consumption of the integrated equipment under different barrel set temperature

Fig.5. Specific energy consumption of the integrated equipment under different feed rate

Fig.6. Distribution of specific energy consumption of the integrated equipment at different feed rate

Fig.7. Specific energy consumption of the integrated equipment under different screw speed

Fig.8. Distribution of specific energy consumption of the indegrated equipment under different screw speed

螺杆转速/r·min^-1	喂料转速/ r·min^-1	喂料速度/kg·h^-1	实验时长/min
100	8.0	8.11	36.99
200	11.0	11.03	27.20
300	14.0	13.71	21.88
400	17.5	16.54	18.14
500	21.0	19.07	15.73
600	24.0	21.86	13.72

Tab.2. Corresponding relationship between screw speed， feeding speed， feed rate and experiment duration

Fig.9. Energy consumption of the integrated equipment under different screw speed

Fig.10. Energy consumption distribution of the integrated equipment under different screw speed

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