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| Study on the Application of Environment-friendly Hydrogen Peroxide Stabilizer |
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| DOI：10.11980/j.issn.0254-508X.2018.10.003 |
| Key Words:stabilizer chelator PHS pulp whiteness H2O2 residual |
| Author Name | Affiliation | | LI De-pin | Zhejiang Transfar Whyyon Chemical Co., Ltd., Hangzhou， Zhejiang Province， 311231 | | QU Ya-ping* | Zhejiang Transfar Whyyon Chemical Co., Ltd., Hangzhou， Zhejiang Province， 311231 | | YAO Sheng | Zhejiang Transfar Whyyon Chemical Co., Ltd., Hangzhou， Zhejiang Province， 311231 | | YANG Lei | Zhejiang Transfar Whyyon Chemical Co., Ltd., Hangzhou， Zhejiang Province， 311231 | | LIU Xiao-xiao | Zhejiang Transfar Whyyon Chemical Co., Ltd., Hangzhou， Zhejiang Province， 311231 |
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| Abstract:The hydrogen peroxide stabilizer PHS and other chelating agents were used for chelation test of calcium ion.The results showed that the ability of PHS to chelate calcium ions under alkaline condition could reach 580 mg/g and even more.Hydrogen peroxide stabilizer PHS and chelator EDTA were respectively used in the first and second stage bleaching of CTMP pulp under the optimum amount of hydrogen peroxide.The impacts on pulp whiteness and residual hydrogen peroxide in the raffinate were investigated.The results showed that， in the first stage bleaching， PHS and EDTA increased the whiteness of the pulp from 57.0% of control sample to 58.6% and 57.9%， respectively， and the content of residual H2O2 increased from 23.2% to 29.7% and 28.6%， respectively， the improvements were not obvious.But in the second stage bleaching， PHS could increase the whiteness of the pulp were from 71.9% to 78.0%， and the residual H2O2 content from 2.1% to 38.5%. Contrary the impacts of EDTA were still very limited the corresponding increases of whiteness and residual H2O2 content were 74.0% and 7.3%.When PHS was used as a hydrogen peroxide stabilizer to achieve the same whiteness of the pulp， the amount of H2O2 was reduced by 11.0%， which reduced the production cost of 16RMB per ton pulp． |
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