JP7044456B2 - Cooking oil manufacturing system and cooking oil manufacturing method - Google Patents

Description

The present invention relates to an edible oil production system and a method for producing edible oil. More specifically, the present invention relates to a manufacturing system for performing decolorization treatment and a method for decolorization treatment in the process of refining edible oil.

Generally, edible oil is produced through an oil extraction step of extracting edible oil crude oil from edible oil raw materials such as soybeans and rapeseed, and a refining step of refining the obtained edible oil crude oil. Here, as the oil sampling process, a squeezing process, an extraction process, and the like are known. On the other hand, as the purification step, a degumming step, a deoxidizing step, a decoloring step, a dewazing step, a deodorizing step and the like are known.

Crude edible oil obtained through the oil extraction process contains a large amount of impurities and is therefore unsuitable as edible oil as it is. Therefore, it is necessary to remove various impurities contained in the crude cooking oil by the refining process.

By the way, as one of the refining steps of edible oil, a decoloring step of removing coloring components such as chlorophyll from deoxidized oil is known. Generally, in the decolorization step, an adsorbent such as activated clay is brought into contact with the deoxidized oil to remove coloring components such as chlorophyll to produce decolorized oil. Then, after the decolorization treatment, the decolorizing oil and the like are removed from the adsorbent by filtration or the like. Here, if the adsorbent remains in the decolorized oil after filtration, the quality of the edible oil may be adversely affected. Therefore, Patent Document 1 discloses that an ICP emission spectrometry system is used to detect leakage of an adsorbent into a decolorizing oil.

However, as disclosed in Patent Document 1, in the measurement using the ICP emission spectrometry system, it was necessary to sample the decolorized oil and measure the ICP by the emission spectrometry system. Therefore, when the adsorbent leaks to the decolorizing oil, there is a problem that it cannot be dealt with promptly. Further, since the ICP issuance analysis system is not non-destructive analysis, there is a problem that it cannot be incorporated in the production line.

JP 2002-80885

An object of the present invention is to provide a manufacturing system and a manufacturing method capable of rapidly detecting leakage of an adsorbent to a bleaching oil in a edible oil manufacturing process, particularly in a bleaching process in a refining step. ..

A decolorizing part that is decolorized by bringing an adsorbent into contact with the fat and oil,
A filtration unit that separates the adsorbent from the mixture of the fat and oil supplied from the decolorization unit and the adsorbent,
An edible oil manufacturing system including a fine particle measuring instrument for measuring the presence or absence of fine particles in the decolorized oil supplied from the filtration unit.
Further, according to a preferred aspect of the present invention,
Further provided with a connecting means connected to the filtration unit,
The fine particle measuring instrument can provide the above system for measuring the presence or absence of fine particles in the decolorizing oil flowing through the connecting means.
Further, according to a preferred embodiment of the present invention, the system for measuring the presence or absence of the fine particles by measuring the number of particles of the fine particles and / or the particle size distribution of the fine particles by the fine particle measuring instrument. Can be provided.
Further, according to a preferred aspect of the present invention,
The fine particle measuring instrument generates a measurement result signal indicating the result of the measurement, and the particle measuring instrument generates a measurement result signal.
It is possible to provide the system further comprising a control device which is connected to the fine particle measuring instrument and controls the operation of the system according to the measurement result signal.
Also, according to another preferred embodiment of the present invention.
Decolorized oil is obtained through a treatment in which the adsorbent is brought into contact with the fat and oil, and further a treatment in which the adsorbent is removed from the fat and oil.
A process for detecting the residual adsorbent in the decolorizing oil using a fine particle measuring instrument.
It is possible to provide a method for producing an edible oil, including.
Further, according to a preferred embodiment of the present invention, it is possible to provide the above method in which the detection of the residual adsorbent is performed in-line using the fine particle measuring instrument.
Further, according to a preferred embodiment of the present invention, it is possible to provide the above method for detecting the residual of the adsorbent by measuring the number of particles and / or the particle size distribution of the fine particles in the decolorizing oil. can.
Further, according to a preferred embodiment of the present invention, when the residual adsorbent is detected, the decolorization treatment is stopped, or the decolorizing oil is removed from the adsorbent in any of the steps prior to the treatment. The above method of returning can be provided.

According to the present invention, the leakage of the adsorbent into the decolorizing oil can be quickly detected by using the fine particle measuring instrument. Moreover, since it can be incorporated in the production line, it can be continuously detected.

It is a flow chart which shows the whole production process of cooking oil in Embodiment 1. FIG. It is a block diagram which shows the system which concerns on the deoxidizing step and the decoloring step in Embodiment 1. FIG.

Hereinafter, the best mode for carrying out the present invention will be described in detail with reference to the accompanying drawings, but the following description shows one embodiment of the present invention and does not deviate from the gist of the present invention. Can be modified in.

(Embodiment 1)
In the edible oil manufacturing system and manufacturing method according to the present embodiment, in the bleaching process in the edible oil refining process, a fine particle measuring instrument is arranged to quickly detect leakage of the adsorbent to the bleaching oil. ..

<Manufacturing process of fats and oils>
First, the entire manufacturing process of fats and oils will be described with reference to FIG. As shown in FIG. 1, the oil and fat manufacturing process includes an oil extraction step P1 for producing cooking oil crude oil 11 from an oil extraction raw material 10 and a refining step P2 for producing refined oil 12 from cooking oil crude oil 11.

The oil sampling raw material 10 is not particularly limited, but soybean, palm, rapeseed, corn, cottonseed, safflower, sunflower, peanut, flax, rice bran, grape seed and the like can be used.

The cooking oil crude oil 11 is obtained by extracting oil from the oil extraction raw material 10, and refers to the oil before undergoing the refining process. Further, the refined oil 12 refers to a product obtained by refining the cooking oil crude oil 11. In the present invention, unless otherwise specified, the fat and oil shall include both crude cooking oil and refined oil.

In the present embodiment, the oil sampling step P1 includes steps such as squeezing and extraction. Further, the purification step P2 includes a degumming step, a deoxidizing step, a decoloring step, a dewazing step, and a deodorizing step.

Next, with reference to FIG. 2, the decolorization step in the purification step P2 of the present embodiment will be described.

FIG. 2 is a block diagram showing a manufacturing system 20 for a deoxidizing step and a decoloring step according to the first embodiment of the present invention. The system shown in FIG. 2 includes a crude oil tank 201, a deoxidizing treatment unit 202, a deoxidizing oil tank 203, a temperature adjusting unit 204, a decolorizing unit 205, a filtering unit 206, a fine particle measuring instrument 207, a decolorizing oil tank 208, and a control. Includes device 209. Here, the system in which the cooking oil crude oil tank 201, the deoxidized oil tank 203, the temperature control unit 204, the decolorization unit 205, the filtration unit 206, the fine particle measuring instrument 207, the decolorization oil tank 208, and the control device 209 are related to the decolorization process. Is. Further, each of them is connected to each other by a connecting means such as a pipe shown by a solid line in FIG. Then, the oil and fat flow from the cooking oil crude oil tank 201 toward the decolorizing oil tank 211. The system related to the deoxidizing step and the decoloring step of the present invention is not limited to the one shown in FIG. 2, and is shown in FIG. 2 in order to use other well-known deoxidizing and decoloring steps. It is also possible to omit a part of the tank, the processing unit, the adjusting unit, and the device. For example, the cooking oil crude oil tank 201, the deoxidizing treatment unit 202, the deoxidizing oil tank 203, the temperature adjusting unit 204, and the decolorizing oil tank 208 can be deleted as necessary. Similarly, a tank, processing unit, adjusting unit, device, etc. can be added to the system shown in FIG. 2 in order to use another well-known deoxidizing step. In FIG. 2, the oil and fat used in the decolorization step is deoxidized oil, but crude oil, degumming oil, deodorizing oil and the like may be used.

In FIG. 2, the cooking oil crude oil tank 201 holds the cooking oil crude oil obtained in the oil sampling process.

The deoxidizing unit 202 adds phosphoric acid or an alkaline aqueous solution to the cooking oil crude oil supplied from the cooking oil crude oil tank 201 and treats it (deoxidizing treatment) to separate and remove impurities in the cooking oil crude oil. The deoxidizing treatment includes, for example, a degumming treatment and an alkaline deoxidizing treatment. The crude cooking oil that has been deoxidized by the deoxidizing unit 202 is supplied to the deoxidizing oil tank 203 as deoxidizing oil.

The deoxidized oil tank 203 holds the deoxidized oil supplied from the deoxidizing treatment unit 202.

The temperature adjusting unit 204 adjusts the temperature of the deoxidized oil supplied from the deoxidized oil tank 203 to the set temperature. The temperature adjusting unit 204 is not particularly limited, but for example, a heat exchanger using steam can be used. In this case, the temperature of the deoxidized oil can be adjusted by adjusting the amount of steam supplied to the heat exchanger.

<Processing to bring the adsorbent into contact with fats and oils>
The decolorizing portion 205 brings the adsorbent into contact with deoxidized oil to remove coloring components such as chlorophyll. The decolorizing unit 205 is not particularly limited, and may include, for example, a mixer 2051, a mixing tank 2052, and a decolorizing can 2053.

The mixer 2051 rapidly mixes the adsorbent with the deoxidized oil supplied from the temperature control unit 204. The mixer 2051 is not particularly limited, but for example, a jet mixer can be used. The adsorbent is not particularly limited, but for example, clay clay, acid clay clay, activated clay clay, or activated carbon can be used. The mixer 2051 rapidly mixes the deoxidized oil and the adsorbent, so that the deoxidized oil and the adsorbent come into contact with each other. As a result, coloring components such as chlorophyll are removed from the deoxidized oil. In the present embodiment, the edible oil after being mixed with the adsorbent by the mixer 2051 is referred to as bleaching oil.

The mixing tank 2052 further holds the mixture of the decolorized oil and the adsorbent rapidly mixed by the mixer 2051 with stirring for a predetermined time. As a result, the adsorption of coloring components such as chlorophyll by the adsorbent further progresses. The mixture of the decolorizing oil and the adsorbent is stirred and held in the mixing tank 2052 for a predetermined time, and then sent to the decolorizing can 2053.

The decolorizing can 2053 further holds the mixture of the decolorizing oil supplied from the mixing tank 2052 and the adsorbent under vacuum for a predetermined time. As a result, the adsorption of coloring components such as chlorophyll by the adsorbent further progresses. The mixture of the decolorizing oil treated in the decolorizing can 2053 and the adsorbent is sent to the filtration unit 206.

<Process to remove adsorbent from fats and oils>
The filtration unit 206 separates the mixture of the decolorizing oil and the adsorbent supplied from the decolorizing can 2053 into the decolorizing oil and the adsorbent. The filtration unit 206 is not particularly limited, but a well-known filtration device such as a filter press or a leaf filter can be used. Further, as the filtration unit 206, in addition to the well-known filtration device described above, a well-known dust collector such as a cartridge filter can also be used in combination. The decolorizing oil from which the adsorbent has been removed is sent to the fine particle measuring instrument 207 as decolorizing oil. On the other hand, the removed adsorbent is treated as a waste adsorbent.

Although FIG. 2 shows a system having a decolorizing unit 205 and a filtering unit 206 separately, in another embodiment, the decolorizing unit 205 and the filtering unit 206 can be integrated. As an example, the adsorbent is held in the filter section in advance, and the deoxidized oil passes through the filter section so that the adsorbent can be brought into contact with the adsorbent.

<Processing to detect using a fine particle measuring instrument>
The fine particle measuring device 207 detects the presence or absence of leakage (residual) of the adsorbent in the decolorized oil from which the adsorbent has been removed by the filtration unit 206. For example, the fine particle measuring device 207 measures the presence or absence of fine particles in the decolorizing oil. More specifically, the fine particle measuring device 207 can be configured to measure the number of fine particles in the decolorizing oil and the particle size distribution of the fine particles. In the present embodiment, it is preferable that the measuring unit of the fine particle measuring device 207 has a configuration capable of directly measuring the decolorized oil flowing in the connecting means such as a pipe connecting the filtration unit 206 and the decolorizing oil tank 208. That is, it is preferable that the fine particle measuring instrument 207 is arranged in a so-called in-line manner. The fine particle measuring device 207 is not particularly limited, but for example, a particle counter capable of measuring the number of fine particles and the particle size in the decolorizing oil by using a laser beam can be used.

The measurement result of the fine particle measuring device 207 is supplied to the control device 209 as a measurement result signal PS. In the present embodiment, the measurement result signal PS is not particularly limited, but includes, for example, information such as the number of detected fine particles and the particle size distribution of the detected fine particles. As described above, by using the fine particle measuring device 207, it is possible to obtain information such as the number of detected fine particles and the particle size distribution, which could not be obtained by an elemental analysis system such as a conventional ICP emission spectrometry system.

The decolorizing oil tank 211 holds the decolorizing oil supplied from the filtration unit 206 via the fine particle measuring device 207. The decolorized oil held in the decolorizing oil tank 211 is subsequently subjected to a dewazing treatment and a deodorizing treatment to become refined oil.

<Control process of decolorization process>
The control device 209 controls the decolorization process. In the present embodiment, for example, the control device 209 is a decolorization step when the fine particle measuring device 207 supplies the measurement result signal PS indicating that the fine particles are detected to the control device 209. Can be configured to stop or return the decolorized oil to the previous step of the filter until no fine particles are detected. In other embodiments, a predetermined threshold can be set using the number of particles and the particle size distribution of the fine particles. In this case, the control device 209 performs a predetermined calculation according to the measurement result signal 209, and when the obtained calculation result exceeds the threshold value, the decolorization process is stopped or the decolorization is performed until the threshold value is not exceeded. It can also be configured to return the oil to the process prior to the filter.

As shown in the above embodiments, in the cooking oil manufacturing system and the cooking oil manufacturing method, the leakage of the adsorbent into the decolorized oil can be quickly detected by using the fine particle measuring instrument 207. ..

In the above embodiment, the decolorization step has been described as an example, but the present invention is not limited thereto. For example, the present invention can be used in a manufacturing process other than the refining process of cooking oil.

10 Oil extraction raw material 11 Cooking oil crude oil 12 Refining oil P1 Oil extraction process P2 Refining process 201 Cooking oil crude oil tank 202 Deoxidizing processing unit 203 Deoxidizing oil tank 204 Temperature control unit 205 Decolorizing unit 2051 Mixer 2052 Mixing tank 2053 Decolorizing can 206 Filtering unit 207 Fine particle measurement Vessel 208 decolorizing oil tank 209 controller

Claims (7)

A decolorizing part that is decolorized by bringing an adsorbent into contact with the fat and oil,
A filtration unit that separates the adsorbent from the mixture of the fat and oil supplied from the decolorization unit and the adsorbent,
A fine particle measuring instrument that measures the presence or absence of an adsorbent in the decolorizing oil supplied from the filtration unit , and
A system for producing edible oil, which comprises stopping the decoloring process when the fine particle measuring instrument detects an adsorbent, or returning the decolorized oil to the process before the filtration unit until the adsorbent is no longer detected . Further provided with a connecting means connected to the filtration unit,
The system according to claim 1, wherein the fine particle measuring instrument measures the presence or absence of an adsorbent in the decolorizing oil flowing through the connecting means. The system according to any one of claims 1 or 2, wherein the fine particle measuring instrument measures the presence or absence of the adsorbent by measuring the number of particles of the adsorbent and / or the particle size distribution of the adsorbent . .. The fine particle measuring instrument generates a measurement result signal indicating the result of the measurement, and the particle measuring instrument generates a measurement result signal.
The system according to any one of claims 1 to 3, further comprising a control device in which the system is further connected to the fine particle measuring instrument and controls the operation of the system according to the measurement result signal. Decolorized oil is obtained through a treatment in which the adsorbent is brought into contact with the fat and oil, and further a treatment in which the adsorbent is removed from the fat and oil.
Includes a process of detecting the residual adsorbent in the decolorized oil using a fine particle measuring instrument.
When the residual adsorbent is detected, the decolorization treatment is stopped, or the decolorizing oil is returned to any of the steps prior to the treatment of removing the adsorbent from the fat and oil .
How to make cooking oil. The method according to claim 5, wherein the detection of the residual adsorbent using the fine particle measuring instrument is performed in-line. The method according to claim 5 or 6, wherein the residual adsorbent is detected by measuring the number of particles and / or the particle size distribution of the fine particles in the decolorizing oil.

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