A kind of capsanthin solvent extraction liquid evaporation method and evaporation equipment

An extraction solution and capsanthin technology, applied in evaporation, separation methods, chemical instruments and methods, etc., can solve the problems of unpleasant capsanthin extract concentration, small processing capacity, long desolvation time, etc., and achieve easy continuous industrial production. , The evaporation temperature is low, and the desolvation effect is good.

Active Publication Date: 2019-03-22
CHENGUANG BIOTECH GRP CO LTD
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AI Technical Summary

Problems solved by technology

[0004] In the patent with the publication number CN102504947A, the solvent in the cottonseed mixed oil is recovered by using a rising film evaporator connected to a short-range evaporator, but because there are many impurities in the capsanthin solvent extract, when the solvent content is low, using a rising film evaporator is easy to cause Blockage, this process is not suitable for the concentration of capsanthin extract
In the research on the improvement of capsanthin extraction process (the influence of solvent extraction of capsanthin on the absorbance ratio, Su Guangping, China Food Additives, 2014 (4)), the capsanthin extract was evaporated using a rising film evaporator, and the second evaporation was performed using a thin film The evaporator and the three steams are refined by nitrogen desolvation. Because nitrogen desolventization is a tank group operation, there are problems such as long desolventization time, small processing capacity, high energy consumption, and large loss of color value.
In the paper "Effect of Solvent Extraction of Capsanthin on Absorption Ratio", falling film evaporation, rising film evaporation, and thin film evaporation were used in sequence to evaporate the extract solution. The residue is still high, which will cause mixed pollution of different solvents in the subsequent treatment
In conclusion, traditional solvent evaporation has various disadvantages and is not an ideal process for large-scale industrial production of capsanthin.

Method used

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  • A kind of capsanthin solvent extraction liquid evaporation method and evaporation equipment

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0040] Capsanthin solvent extract evaporation equipment includes sequentially connected rising film evaporators, falling film evaporators, and rotary thin film evaporators.

[0041] Capsicum granule is extracted with the normal hexane and acetone mixed solvent of volume ratio 8:2, by the solid-liquid ratio of 1kg:3L and obtains capsanthin solvent extract,

[0042] 1) The capsanthin solvent extract with a color value of 7.85 is 11 ± 0.2m 3 The / h flow rate is measured by the rotameter flow rate 101, and the centrifugal pump is pumped into the 150㎡ rising film evaporator tube side to exchange heat with the hot water at 65±1℃ in the rising film shell side, and the pressure in the rising film tube side is controlled at -0.05±0.005MPa, the gas phase outlet temperature of the rising film evaporation is controlled at 54±1°C, the extraction liquid enters the flash tank through the gas balance pipe on the upper part of the rising film, evaporates in the flash tank, and the solvent vapo...

Embodiment 2

[0049] see figure 1 , Capsanthin solvent extract evaporation equipment, comprising a rising film evaporator 1, a falling film evaporator 2, a rotary thin film evaporator 3 and a molecular distillation evaporator 4 connected in sequence,

[0050] The upper part of the rising film evaporator 1 is connected with a rising film evaporation flash box 102 through a gas balance pipe, and a liquid outlet is arranged at the bottom of the rising film evaporation flash box 102;

[0051] The upper part of the falling film evaporator 2 is connected with a falling film evaporation flash box through a gas balance pipe 203, and a liquid outlet is arranged at the bottom of the falling film evaporation flash box;

[0052] The upper part of the rotary film evaporator 3 is connected to a rotary film evaporation flash box through a gas balance pipe, and a liquid outlet is arranged at the bottom of the rotary film evaporation flash box;

[0053] The discharge pipeline of the rotary thin film evapor...

Embodiment 3

[0059] Adopt the equipment of embodiment 2. Capsicum granules are extracted with a mixed solvent of n-hexane and acetone at a volume ratio of 8:2 to obtain capsanthin solvent extract by a solid-liquid ratio of 1:3.

[0060] 1) The capsanthin solvent extract with a color value of 7.85 is 11 ± 0.2m 3 / h flow rate, measured by the rotameter flow rate, pumped into the 150㎡ rising film evaporator tube side by the centrifugal pump, and heat exchange with the hot water at 65±1℃ in the rising film shell side, the pressure in the rising film tube side is controlled at -0.05±0.005MPa, the gas phase outlet temperature of the rising film evaporation is controlled at 54±1°C, the extraction liquid enters the flash tank through the gas balance pipe on the upper part of the rising film, evaporates in the flash tank, and the solvent vapor is condensed and recovered through the pipeline for recycling , the red capsicum is discharged to the liquid receiving tank through the discharge pipe at th...

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PUM

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Abstract

The invention provides a capsanthin solvent extracting solution evaporation method. The method comprises the following steps that 1, a capsanthin solvent extracting solution enters a climbing film evaporator at first, and vacuum evaporation is performed; 2, a liquid phase obtained after flashing is performed in the step 1 enters a falling film evaporator, flows from top to bottom in the tube pass of the falling film evaporator, and is subjected to heat exchange with hot water under the temperature of 70-80 DEG C inside the shell pass of the falling film evaporator; 3, the liquid phase drained by the falling film evaporator enters a rotary film evaporator, and vacuum evaporation is performed; 4, the liquid phase at the bottom of the rotary film evaporator enters a molecular distillation evaporator, and distillation is performed under the vacuum condition. According to the method, climbing film evaporation, falling film evaporation, rotary film evaporation and molecular distillation evaporation equipment and operation technological conditions are reasonably set, the evaporation temperature is low, energy consumption is lowered, the treatment efficiency is high, the solvent consumption is small, the cost is greatly lowered, and continuous industrial production is achieved easily.

Description

technical field [0001] The invention belongs to the field of extraction of vegetable raw materials, and in particular relates to an extraction method using evaporation equipment. Background technique [0002] As a natural pigment, paprika has the characteristics of strong coloring ability, bright color, good stability and high safety. It is widely used in meat products, flour products, soy products and pickled vegetables, and is the most widely used natural oil-soluble pigment at present. [0003] Solvent extraction is generally used in the industrial production of capsanthin. The traditional capsanthin solvent evaporation process has the disadvantages of small processing capacity, high temperature, high loss of capsanthin, unsatisfactory precipitation effect, and high solvent consumption. The main component of capsanthin is oil, but its extract has many impurities and is a heat-sensitive substance, which puts forward higher requirements for the processing technology. Ther...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09B61/00B01D1/22B01D3/14
CPCB01D1/22B01D3/14C09B61/00Y02P20/10
Inventor 卢庆国韩文杰李贵祯李俊和齐立军褚延伟
Owner CHENGUANG BIOTECH GRP CO LTD
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