Low carbonyl value soybean oil preparation method
A technology of soybean oil and carbonyl value, which is applied in the direction of fat oil/fat refining and fat production, and can solve the problem of high carbonyl value
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
Method used
Image
Examples
preparation example Construction
[0026] A kind of preparation method of low carbonyl value soybean oil provided by the present invention, described method specifically comprises the steps:
[0027] S100, passing the pretreated soybean oil into the first container, and adding the adsorbent into the first container under vacuum conditions to obtain a mixture;
[0028] Specifically, please refer to figure 1 After the soybean oil is desoaped, it is passed into a drying tank and dried under vacuum conditions. The dried soybean oil is put into a pre-decolorization reaction tank, and the soybean oil is heated to 70-120°C under vacuum conditions. Add the adsorbent under stirring condition, stir to obtain the mixture of soybean oil and adsorbent, and wait for filtration. The vacuum condition is that the degree of vacuum is less than -680mmHg.
[0029] In some embodiments, the adsorbent includes activated clay and / or activated carbon. In terms of mass percentage, the added amount of the adsorbent accounts for 0.5%-7...
Embodiment 1
[0043] Soybean oil after chemical alkali refining is put into the pre-bleaching reaction tank after vacuum drying at 70°C. Add 4.5% activated clay at 110°C and the system vacuum is -720mmHg, and flow into the decolorization tank for 30 minutes. This process is accompanied by direct steam stirring, and the decolorization is completed. After filtering through the filter, the filter sheet needs to be pre-coated before filtering. Diatomaceous earth or perlite is mixed with the oil in the pre-coating tank and then circulated through the filter until the oil is clear and transparent after passing through the filter. After the pre-coating is completed After filtering, there will be a small amount of residual oil in the clay filter cake that needs to be blown out with steam. This part of the oil is more seriously oxidized and concentrated and purged to the residual oil tank as ordinary soybean oil. The oil after decolorization and filtration is in the The deodorization temperature is d...
Embodiment 2
[0045]Soybean oil that has undergone chemical alkali refining is vacuum-dried at 80°C and put into the pre-decolorization reaction tank. At 85°C and the system vacuum is -720mmHg, add 1.0% bleaching clay and 0.5% activated carbon into the decolorization tank for 30 minutes. The process is accompanied by Stir directly with steam, and filter through a filter after decolorization is completed. Before filtering, the filter sheet needs to be pre-coated. Diatomaceous earth or perlite is mixed with the oil in the pre-coating tank and then circulated through the filter until the oil is clear after passing through the filter. Transparent, after the pre-coating is completed, filter. After filtering, there will be a small amount of residual oil in the clay filter cake that needs to be blown out with steam. This part of the oil is more oxidized and concentrated and purged to the residual oil tank as ordinary soybean oil. The grease after decolorization and filtration was directly steam str...
PUM
Login to View More Abstract
Description
Claims
Application Information
Login to View More