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Study on Carbon Emission of Sulfate Wood Pulping Process Based on Different Cooking Techniques
Received:June 11, 2023  
DOI：10.11980/j.issn.0254-508X.2023.08.003
Key Words:chemical wood pulp  pulping method  carbon emission  energy consumption
Fund Project:广西自然科学基金（2020JJA160061）；广西博世科环保科技股份有限公司国家企业技术中心开放基金项目（GXU-BFY-2020-031）。
Author NameAffiliationPostcode
WANG Yang College of Light Industry and Food Engineering， Guangxi University， Nanning， Guangxi Zhuang Autonomous Region， 530004
Guangxi Key Lab of Clean Pulp & Papermaking and Pollution Control， Nanning， Guangxi Zhuang Autonomous Region， 530004 		530004
JIA Yanlong College of Light Industry and Food Engineering， Guangxi University， Nanning， Guangxi Zhuang Autonomous Region， 530004
Guangxi Key Lab of Clean Pulp & Papermaking and Pollution Control， Nanning， Guangxi Zhuang Autonomous Region， 530004 		530004
LI Bolun College of Light Industry and Food Engineering， Guangxi University， Nanning， Guangxi Zhuang Autonomous Region， 530004
Guangxi Key Lab of Clean Pulp & Papermaking and Pollution Control， Nanning， Guangxi Zhuang Autonomous Region， 530004 		530004
WANG Mengyan College of Light Industry and Food Engineering， Guangxi University， Nanning， Guangxi Zhuang Autonomous Region， 530004
Guangxi Key Lab of Clean Pulp & Papermaking and Pollution Control， Nanning， Guangxi Zhuang Autonomous Region， 530004 		530004
LIU Jiang College of Light Industry and Food Engineering， Guangxi University， Nanning， Guangxi Zhuang Autonomous Region， 530004
Guangxi Key Lab of Clean Pulp & Papermaking and Pollution Control， Nanning， Guangxi Zhuang Autonomous Region， 530004 		530004
YIN Yongjun* College of Light Industry and Food Engineering， Guangxi University， Nanning， Guangxi Zhuang Autonomous Region， 530004
Guangxi Key Lab of Clean Pulp & Papermaking and Pollution Control， Nanning， Guangxi Zhuang Autonomous Region， 530004 		530004
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Abstract:In this paper， the calculation model of carbon emission and carbon intensity in pulping production process was established， and three typical cooking technologies of Displacement Digester System（DDS）， Kamyr and Pandia steaming system were analyzed. The results showed that the carbon intensity of DDS was lower than that of Kamyr and Pandia. The three pulping technologies were all “zero carbon”， which had certain carbon reduction ability. Among them， the carbon reduction amount of the pulping system based on DDS （1531.48 kgCO2 e/adt） was stronger than that of Kamyr （1141.77 kgCO2e/adt） and that of Pandia （924.52 kgCO2e/adt）. The energy generated by alkali recovery system met the whole pulping process such as cooking， screen washing and bleaching. The carbon emission of cooking and alkali recovery systems accounted for 26.78% and 65.85%， which were the main targets of carbon reduction.
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