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Method for simultaneously dephosphorizing and deacidifying grease

An oil and deacidification technology, which is applied in the field of deacidification, simultaneous dephosphorization and deacidification of oil, and simultaneous dephosphorization of oil by using chelating resin, which can solve the problems such as the inability to reuse EDTA, the increase of neutral oil loss, and the poor economy. Reach the effect of remarkable deacidification effect, cost dephosphorization and low cost

Active Publication Date: 2017-07-28
陕西安赛飞特科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The main disadvantages of this method are: ① The soapstock generated will inevitably entrain a part of neutral oil; ② When too much alkali is added or the local concentration is too high due to uneven stirring, the alkali will saponify with neutral oil reaction, further increasing the loss of neutral oil
This process has the following disadvantages: ① expensive EDTA cannot be reused, and the economy is poor; ② the dephosphorization effect mainly depends on the degree of dispersion of EDTA in oil, so sodium dodecyl sulfate (SDS) must be added and strong mechanical Stir or shear to promote the full contact and dispersion of the oil and water phases to form small water-in-oil droplets; ③The added SDS needs to be removed by subsequent processes

Method used

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  • Method for simultaneously dephosphorizing and deacidifying grease
  • Method for simultaneously dephosphorizing and deacidifying grease
  • Method for simultaneously dephosphorizing and deacidifying grease

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0052] Chelating resin Amberlite IRC748+ hydration dephosphorization used in rapeseed crude oil dephosphorization and deacidification experiment

[0053] The method used in this embodiment:

[0054] Take 20mL of rapeseed crude oil (phosphorus content: 384.2ppm, acid value: 2.38mg·KOH / g) in a shaker flask, and add 2g of Amberlite IRC748 chelating resin with IDA functional group (Rohm and Haas Company, USA) . Put the shaker into the shaker and shake at a constant temperature of 60°C and 200r / min for 6 hours. Then take out the oil phase, add 80°C, 5% vol demineralized hot water to the oil phase, shake at a constant temperature of 80°C, 200r / min for 30min; then centrifuge at 8000r / min for 20min to obtain refined oil.

[0055] The final phosphorus content after treatment was 0.9 ppm, and the acid value after treatment was 0.08 mg·KOH / g. See Table 1 and Table 4 for specific parameters.

[0056] Hydration and dephosphorization: For comparison, the crude rapeseed oil is directly hydrated an...

Embodiment 2

[0071] Chelating resin Amberlite IRC747+ hydration dephosphorization used in soybean crude oil dephosphorization and deacidification experiment

[0072] The method of the invention:

[0073] Take 20 mL of crude soybean oil (phosphorus content: 126.7 ppm, acid value: 2.16 mg·KOH / g) in a shake flask, and add 1 g of Amberlite IRC747 chelating resin (Rohm and Haas Company, whose functional group is aminophosphonic acid) United States), put the shaker in a shaker and shake at a constant temperature of 60°C and 200r / min for 6h. Then take out the oil phase, add 5% vol, 80°C softened hot water to the oil phase, shake at a constant temperature of 80°C, 200r / min for 30min; then centrifuge at 8000r / min for 20min to obtain refined oil.

[0074] The final phosphorus content after treatment by this method is 0.8 ppm, and the acid value after treatment is 0.39 mg·KOH / g. The specific parameters are shown in Table 5 and Table 8.

[0075] Hydration and dephosphorization: For comparison, the crude soyb...

Embodiment 3

[0088] Chelating resin Amberlite IRC748+ hydration dephosphorization for dephosphorization and deacidification experiment of pepper seed crude oil

[0089] Take 20mL of Amberlite IRC748 resin (Rohm and Haas Company, USA) into the column (column diameter 1cm, column length 25cm), and pump the crude oil (phosphorus content: 233.5ppm, acid value: 21mg·KOH / g) Into the column, the flow rate was 0.3mL / min, and the collection was stopped when the calcium ion leakage concentration at the outlet of the column reached 2ppm, and a total of 4500 mL of pepper seed oil was collected. Take 100 mL of the resin-treated prickly ash seed oil, add 80°C and 5% vol softened hot water, shake at a constant temperature of 80°C and 200 r / min for 30 minutes; then centrifuge at 8000 r / min for 20 minutes to obtain refined oil.

[0090] The final phosphorus content after treatment by this method is 0.5 ppm, and the acid value after treatment is 2.05 mg·KOH / g.

[0091] Regenerate the used resin, the specific proc...

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Abstract

The invention discloses a method for simultaneously dephosphorizing and deacidifying grease. The grease to be treated sufficiently contacts with chelate resin, and then phospholipid is removed by a hydrated dephosphorizing method to obtain dephosphorized and deacidified grease. According to the method, the grease is simultaneously dephosphorized and deacidified only by one section, and the process is more compact. Compared with a traditional alkali refining deacidification process, the process has the advantages that alkali refining deacidification is omitted, saponification side reaction of neutral oil is avoided, no soap stock is formed, and loss of the neutral oil due to entrainment by the soap stock is avoided, so that the yield of the neutral oil is improved. Compared with a SOFT dephosphorizing process, resin can be regenerated by inexpensive acid and alkali and then reused, no emulsifier is added in the operation process, and strong mechanical stirring or shearing is omitted in the operation process. In conclusion, compared with the prior art, the method has the advantages of short process flow, simplicity in operation, low cost and remarkable dephosphorizing and deacidifying effects.

Description

Technical field [0001] The invention belongs to the technical field of oil refining, and relates to a method for simultaneous dephosphorization and deacidification of fats and oils, in particular to a method for simultaneous dephosphorization and deacidification of fats and oils by using a chelating resin. Background technique [0002] Crude oil refers to the oil that is directly squeezed or extracted from oil crops without subsequent refining and processing, and its main component is a mixture of fatty acid triglycerides (ie, neutral oil). In addition, crude oil also contains phospholipids, metal ions, free fatty acids (FFA), proteins, pigments, moisture and other substances. The presence of these impurities can cause problems such as oxidative deterioration of oils and shortened storage periods. Therefore, it must It is removed by refining the oil. [0003] In addition, because the phosphorus in biodiesel can poison diesel engine exhaust catalysts and increase pollutant emission...

Claims

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Application Information

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IPC IPC(8): C11B3/02
CPCC11B3/02
Inventor 陈斌李蓉窦泽坤马晓迅
Owner 陕西安赛飞特科技有限公司
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