Flaxseed oil three-film absorption dewaxing method
A linseed oil and membrane adsorption technology, applied in the field of vegetable oil, can solve the problems of high fuel consumption, high energy consumption, and large equipment investment, and achieve the effects of reduced equipment investment, stable product quality, and no pollution
Active Publication Date: 2014-10-29
HOHHOT MENGGUXIANG BIOTECH CO LTD
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Problems solved by technology
Obviously, the dewaxing process has high energy consumption, large equipment investment, and large oil consumption.
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[0018] The present invention will be described in further detail below through specific implementation examples and in conjunction with the accompanying drawings.
[0019] In an embodiment of the present invention, a three-membrane adsorption dewaxing method for linseed oil is provided. The linseed oil is obtained by filtering the linseed oil through a polymer polypropylene membrane, a carbon fiber adsorption membrane and a microporous membrane in sequence.
[0020] After a large number of experiments, it was found that the combination of polymer polypropylene membrane, carbon fiber adsorption membrane and microporous membrane to filter linseed oil can absorb and intercept polar wax particles or wax molecular groups in linseed oil. Good dewaxing effect. Compared with centrifugal filtration and pressure filtration in the traditional process, this dewaxing method greatly reduces energy consumption, eliminates the process of heating and cooling linseed oil, and significantly redu...
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Abstract
The invention relates to the field of vegetable oil, and particularly relates to a flaxseed oil three-film absorption dewaxing method. The flaxseed oil three-film absorption dewaxing method comprises the following step: sequentially filtering flaxseed oil by virtue of a high-molecular polypropylene film, a carbon fiber adsorption film and a microporous filtering film. According to the flaxseed oil three-film absorption dewaxing method, wax particles or wax molecular groups which display polarity in the flaxseed oil are adsorbed and intercepted without entering dewaxed oil according to a similarity-intermiscibility principle by utilizing the characteristic that waxes display the polarity at normal temperature (about 25 DEG C); a filtering method which combines the high-molecular polypropylene film, the carbon fiber adsorption film and the microporous filtering film is selected to substitute for freezing crystallization, centrifugal filtration and pressure filtration in the traditional technical process according to a large quantity of tests, so that the energy consumption is greatly reduced, the process of increasing temperature and then reducing temperature of flaxseed oil is omitted, the equipment investment is obviously reduced, easiness and convenience for operation, simple process, no pollution and stabile product quality are achieved, and the wax content of the flaxseed oil is reduced to be less than 0.3 mg / kg after the adsorption filtration of the three films.
Description
technical field [0001] The invention relates to the field of vegetable oil, in particular to a three-membrane adsorption dewaxing method for linseed oil. Background technique [0002] The husk and cell wall of linseed contain a certain amount of wax, which is mixed into the oil during the oil making process. There are acyloxy groups in the wax molecule, which makes the wax slightly polar. Therefore, the wax is a lipophilic compound with a weak hydrophilic group. When the temperature is higher than 40 ° C, the polarity of the wax is weakened and dissolved in linseed oil; as the temperature drops, the viscosity of linseed oil increases, the mobility of wax molecules in the oil decreases, and the polarity of wax molecules increases , Especially when it is lower than 30°C, the crystal grains of the wax gradually become larger, forming a dispersion in the oil, that is, a turbid liquid. As time goes on, the wax will slowly settle down, making the upper layer of linseed oil clear...
Claims
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IPC IPC(8): C11B3/16C11B3/10
Inventor 刘军
Owner HOHHOT MENGGUXIANG BIOTECH CO LTD