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| New Type of Cleaning Principle of High Consistence Pulp from Waste Paper with Adding Dissolved Air Water |
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| DOI：10.11981/j.issn.1000-6842.2017.02.33 |
| Key Words:waste paper pulp; dissolved air water; high consistence cleaning principle; high consistence conical cleaner; pulp and impurities densities difference |
| Fund Project:南京林业大学江苏省制浆造纸科学与技术重点实验室开放基金（201522）；江苏高校优势学科建设工程资助项目(PAPD)；江苏省研究生培养创新工程项目（1343）。 |
| Author Name | Affiliation | | 李金苗1,2 | 1.南京林业大学江苏省制浆造纸科学与技术重点实验室,江苏南京,210037；2.南京林业大学江苏省林业资源高效加工利用协同创新中心,江苏南京,210037 | | 李娇娇1,2 | 1.南京林业大学江苏省制浆造纸科学与技术重点实验室,江苏南京,210037；2.南京林业大学江苏省林业资源高效加工利用协同创新中心,江苏南京,210037 | | 何 晶1,2 | 1.南京林业大学江苏省制浆造纸科学与技术重点实验室,江苏南京,210037；2.南京林业大学江苏省林业资源高效加工利用协同创新中心,江苏南京,210037 | | 皮成忠1,2 | 1.南京林业大学江苏省制浆造纸科学与技术重点实验室,江苏南京,210037；2.南京林业大学江苏省林业资源高效加工利用协同创新中心,江苏南京,210037 | | 张 辉1,2,* | 1.南京林业大学江苏省制浆造纸科学与技术重点实验室,江苏南京,210037；2.南京林业大学江苏省林业资源高效加工利用协同创新中心,江苏南京,210037 |
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| Abstract: |
| It is great significant to study the efficient cleaning principles or methods of the pulp from waste paper, as waste paper has accounted for more than 65% of fiber raw material used in China’s paper industry. On the basis of analysis of the existing waste paper pulp cleaning principles and methods, a new type high consistence waste paper pulp cleaning system by adding dissolved air water was developed. The cleaning efficiencies of two typical waste paper pulps, OCC and ONP, were studied through simulation experiments. The results showed that the cleaning efficiency of the novel cleaning principles and methods was improved compared with the traditional methods. When waste paper pulp consistence was 1%~4%, working pressure was 0.2~0.5 MPa, pressure drop was 0.20~0.45 MPa, the adding proportion of dissolved air water was 60% based on the water contained in the pulp, the separation efficiency of the impurities increased by 18.4%~27.2%. Under the same conditions, due to the density of OCC pulp suspension was about 13.4% lower than ONP pulp suspension, and its cleaning efficiency was about 4.2% higher than ONP pulp suspension. |
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