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| 硅胶对油脂极性组分的吸附特性 |
| Adsorption properties of silica gel for polar components in oil |
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| DOI： |
| 中文关键词: 油脂 硅胶 吸附特性 极性组分 品质 |
| 英文关键词:oil silica gel adsorption property polar component quality |
| 基金项目: |
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| 中文摘要: |
| 考察了硅胶对油脂中金属离子、皂和油脂氧化产物等极性组分的吸附特性。结果表明：添加0.15%（以油质量计，下同）的硅胶就能脱除毛油中95%以上的钙离子和镁离子；添加0.09%的硅胶能完全脱除水洗中和油中的皂杂质；添加0.20%的硅胶能脱除碱炼中和油中88.8%的皂杂质，油中皂含量为29.70 mg/kg，达到工厂对水洗中和油皂含量（≤50 mg/kg）的要求；添加足量的硅胶，还能脱除油脂在储存和加工过程中产生的部分氧化产物，提高产品稳定性。硅胶复配活性白土脱色，能降低活性白土用量，减少中性油损失，同时减少成品油的返酸现象。 |
| 英文摘要: |
| The adsorption properties of silica gel for polar components such as metal ions, soap and oil oxidation products in oil were investigated. The results showed that more than 95% of calcium ions and magnesium ions in crude oil could be removed by 0.15% silica gel(based on the oil mass). The soap impurities in the washed neutralized oil could be completely removed by 0.09% silica gel. About 88.8% soap from the neutralized oil could be removed by 0.20% silica gel, and the soap content in oil was 29.70 mg/kg, which met the requirement of soap content (≤50 mg/kg) in the washed neutralized oil in factory. Partial oxidation products of oil produced during the storage and processing could be removed with the addition of enough silica gel and the stability of the product could also be improved. Silica gel combined with activated clay could reduce the amount of activated clay, the loss of neutral oil and the acid reversion of refined oil. |
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