Method for recovering sucralose tin powder
The invention discloses a method for recovering sucralose tin powder, and belongs to the technical field of sucralose production. The method comprises the following steps: S1, carrying out water separation distillation; s2, recycling organic tin; s4, water separation and impurity removal are conduct...
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| creator | ZHENG XUELIAN XU CHENGGANG WANG SHUZHI QIAN QINGXI XU LIWU XU CHUANJIU |
| description | The invention discloses a method for recovering sucralose tin powder, and belongs to the technical field of sucralose production. The method comprises the following steps: S1, carrying out water separation distillation; s2, recycling organic tin; s4, water separation and impurity removal are conducted, specifically, S41, cyclohexane and DMF are added into the crude tin powder obtained in the step S3, standing and layering are conducted, and a cyclohexane phase 1 is obtained; s42, sequentially adding anhydride and water into the cycloethane phase 1, uniformly mixing, and stirring for layering to obtain a cycloethane phase 2; s43, adding DMF (Dimethyl Formamide) and water into the cycloethane phase 2, washing and layering to obtain a cycloethane phase 3; and S44, distilling the cyclohexane phase 3 to obtain cyclohexane and a tin ester phase. The obtained dibutyltin oxide is high in purity and can be directly recycled, the problems that in existing sucralose production, the recycled dibutyltin oxide is not high |
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The method comprises the following steps: S1, carrying out water separation distillation; s2, recycling organic tin; s4, water separation and impurity removal are conducted, specifically, S41, cyclohexane and DMF are added into the crude tin powder obtained in the step S3, standing and layering are conducted, and a cyclohexane phase 1 is obtained; s42, sequentially adding anhydride and water into the cycloethane phase 1, uniformly mixing, and stirring for layering to obtain a cycloethane phase 2; s43, adding DMF (Dimethyl Formamide) and water into the cycloethane phase 2, washing and layering to obtain a cycloethane phase 3; and S44, distilling the cyclohexane phase 3 to obtain cyclohexane and a tin ester phase. 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The method comprises the following steps: S1, carrying out water separation distillation; s2, recycling organic tin; s4, water separation and impurity removal are conducted, specifically, S41, cyclohexane and DMF are added into the crude tin powder obtained in the step S3, standing and layering are conducted, and a cyclohexane phase 1 is obtained; s42, sequentially adding anhydride and water into the cycloethane phase 1, uniformly mixing, and stirring for layering to obtain a cycloethane phase 2; s43, adding DMF (Dimethyl Formamide) and water into the cycloethane phase 2, washing and layering to obtain a cycloethane phase 3; and S44, distilling the cyclohexane phase 3 to obtain cyclohexane and a tin ester phase. The obtained dibutyltin oxide is high in purity and can be directly recycled, the problems that in existing sucralose production, the recycled dibutyltin oxide is not high</abstract><oa>free_for_read</oa></addata></record> |
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| subjects | ACYCLIC, CARBOCYCLIC OR HETEROCYCLIC COMPOUNDS CONTAININGELEMENTS OTHER THAN CARBON, HYDROGEN, HALOGEN, OXYGEN, NITROGEN,SULFUR, SELENIUM OR TELLURIUM CHEMISTRY METALLURGY ORGANIC CHEMISTRY |
| title | Method for recovering sucralose tin powder |
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