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Preparation method for dehydrated castor oil

A dehydrated castor oil, castor oil technology, applied in the direction of fat oil/fat refining, chemical instruments and methods, dry oil, etc., can solve the problem that dehydrated castor oil cannot meet international standards, and achieve stable color, stable hydroxyl value, iodine The effect of value stabilization

Inactive Publication Date: 2014-04-23
ZIBO CHUANGYE BIOLOGICAL TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

The dehydrated castor oil obtained by the existing water castor oil preparation method in China can not meet the international standard

Method used

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  • Preparation method for dehydrated castor oil

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Experimental program
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Effect test

Embodiment 1

[0016] a) Check the vacuum degree of the reaction kettle, the pipeline has no air leakage, the nitrogen gas is unblocked, and the heat transfer oil is unblocked, and the total mass of castor oil in the material tank is weighed to 300kg;

[0017] b) Catalyst preparation: extract 30kg of castor oil from the material tank, put it into the catalyst tank, vacuumize the catalyst tank twice and fill it with nitrogen, then vacuum again to keep the vacuum degree -0.096MPa, and put 0.15kg of 98% to 99% concentrated Sulfuric acid is diluted with water to 70%, and slowly put into the catalyst tank under normal temperature and pressure for standby;

[0018] c) Extract 270kg of castor oil in the material tank, put it into the reaction kettle, add 0.135kg of antioxidant 1010 and 0.81kg of dehydrating agent sodium bisulfite, vacuumize the reaction kettle twice and fill it with nitrogen, then pump it again Vacuum and maintain a vacuum degree of -0.098MPa. Turn on the agitator when the temperat...

Embodiment 2

[0021] a) Check the vacuum degree of the reaction kettle, the pipeline has no air leakage, the nitrogen gas is unblocked, and the heat transfer oil is unblocked, and the total mass of castor oil in the material tank is weighed to 400kg;

[0022] b) Catalyst preparation: extract 40kg of castor oil from the material tank, put it into the catalyst tank, vacuumize the catalyst tank twice and fill it with nitrogen, then vacuum again to keep the vacuum degree -0.098MPa, and put 0.16kg of 98% to 99% concentrated Sulfuric acid is diluted with water to 70%, and slowly put into the catalyst tank under normal temperature and pressure for standby;

[0023] c) Extract 360kg of castor oil from the material tank, put it into the reactor, add 0.27kg of antioxidant 1010 and 0.72kg of dehydrating agent sodium bisulfite, vacuumize the reactor twice and fill it with nitrogen, then vacuumize again And keep the vacuum at -0.099MPa, turn on the agitator when the temperature rises to 65°C, and when t...

Embodiment 3

[0026] a) Check the vacuum degree of the reaction kettle, the pipeline has no air leakage, the nitrogen gas is unblocked, and the heat transfer oil is unblocked, and the total mass of castor oil in the material tank is weighed to 950kg;

[0027] b) Catalyst preparation: extract 95kg of castor oil from the material tank, put it into the catalyst tank, vacuumize the catalyst tank twice and fill it with nitrogen, then vacuum again to keep the vacuum degree -0.099MPa, and put 0.38kg of 98% to 99% concentrated Sulfuric acid is diluted with water to 70%, and slowly put into the catalyst tank under normal temperature and pressure for standby;

[0028] c) Extract 855kg of castor oil from the material tank, put it into the reaction kettle, add 0.855kg of antioxidant 1010 and 2.565kg of dehydrating agent sodium bisulfite, vacuumize the reaction kettle twice and fill it with nitrogen, then evacuate again and keep the vacuum Temperature -0.099~-0.096MPa, turn on the agitator when the temp...

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Abstract

The invention relates to a preparation method for dehydrated caster oil and belongs to the field of technical modification of castor oil. The preparation method includes taking castor oil accounting for 10% of the total mass as solvent, diluting 98% of concentrated sulfuric acid to be 70-75% of sulfuric acid as a composite catalyst, adding the composite catalyst into a reactor, subjecting the composite catalyst and castor oil accounting for 90% of the total mass to dehydration reaction under action of antioxidants and dehydration additives for the temperature ranging from 245 DEG C to 255 DEG C, and then preserving heat for 4-6 hours. The dehydrated castor oil prepared by the method is light and stable in color, low in hydroxyl value and stable in iodine value; and the Fe-Co colorimetry is 4-5#.

Description

technical field [0001] The invention discloses a preparation method of dehydrated castor oil, which belongs to the technical modification field of castor oil. Background technique [0002] Dehydrated castor oil is one of the deep-processing products of castor oil. Dehydrated castor oil has good drying performance. The coating produced with dehydrated castor oil has the characteristics of no yellowing, no change, no back sticking, wear resistance and strong adhesion. 50% of castor oil produced in the United States is used in the paint industry. At present, 25% of castor oil in Japan is used in the paint industry in the form of dehydrated castor oil. China is a major producer of castor oil, and the production and export of dehydrated castor oil has a good market prospect. However, the quality of the existing domestic dehydrated castor oil can not meet the quality requirements of developed countries. The domestic preparation method of dehydrated castor oil still stays in the ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09F5/06C11B3/04
Inventor 苗百泉
Owner ZIBO CHUANGYE BIOLOGICAL TECH CO LTD
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