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| Study on Ozone Bleaching Process of Oxygen Bleached Eucalyptus Soda-AQ Pulp |
| Received:January 07, 2022 Revised:January 26, 2022 |
| DOI：10.11981/j.issn.1000-6842.2024.03.105 |
| Key Words:soda-AQ;eucalyptus chemical pulp;ozone;bleaching |
| Fund Project:国家自然科学基金（32101464）；济南市科技局项目（20233046）；泰山产业专家项目。 |
| Author Name | Affiliation | Postcode | | GAO Qichao | Key Lab of Pulp and Paper Science and Technology， Ministry of Education， Qilu University of Technology （Shandong Academy of Sciences）， Ji’nan， Shandong Province， 250353
School of Light Industry and Engineering， South China University of Technology， Guangzhou， Guangdong Province， 510640 | 510640 | | YANG Guihua | Key Lab of Pulp and Paper Science and Technology， Ministry of Education， Qilu University of Technology （Shandong Academy of Sciences）， Ji’nan， Shandong Province， 250353 | 250353 | | ZHANG Kai* | Key Lab of Pulp and Paper Science and Technology， Ministry of Education， Qilu University of Technology （Shandong Academy of Sciences）， Ji’nan， Shandong Province， 250353
Shandong Sunpaper Industry Joint Stock Co.， Ltd.， Ji’ning， Shandong Province， 272100
School of Light Industry and Engineering， South China University of Technology， Guangzhou， Guangdong Province， 510640 | 510640 | | ZHANG Wei | Shandong Sunpaper Industry Joint Stock Co.， Ltd.， Ji’ning， Shandong Province， 272100 | 270100 | | QIU Xiaoyan | Shandong Sunpaper Industry Joint Stock Co.， Ltd.， Ji’ning， Shandong Province， 272100 | 270100 | | LIU Zehua | Shandong Sunpaper Industry Joint Stock Co.， Ltd.， Ji’ning， Shandong Province， 272100 | 270100 | | CHEN Jiachuan* | Key Lab of Pulp and Paper Science and Technology， Ministry of Education， Qilu University of Technology （Shandong Academy of Sciences）， Ji’nan， Shandong Province， 250353 | 250353 |
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| Abstract: |
| In this study， ozone bleaching technology was introduced into bleaching process of soda-AQ pulp after oxygen delignification treatment. The effects of ozone concentration， temperature， type and dosage （relative to dry pulp weight） of protectant on the bleached pulp and physical properties of paper prepared were studied to preliminarily obtain the optimum bleaching parameters. The results showed that when 80 g/Nm3 of ozone was used in bleaching process with 1.0% of oxalic acid as protective agent at 10 ℃， the bleached pulp with 72.8% brightness was produced， the viscosity and Kappa number of it were 678 mL/g and 4.18， respectively. Besides， physical properties of paper prepared by bleached pulp were tested， the tensile index of paper was up to 78.9 N·m/g， and the burst index， tearing index and folding times were 4.99 kPa·m2/g， 5.96 mN·m2/g， 38 times， respectively. |
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