SU1472486A1 - Method of automatic control of process of neutralizing oils in alkaline soap solution - Google Patents

Abstract

The invention relates to the food and chemical industries, primarily oil and fat, and can be used to control the continuous alkaline process of neutralizing the free fatty acids of vegetable oils and fats and separating the phases in a soap-alkaline environment. In order to increase the yield of the target product, the method provides for regulating the supply of alkali depending on the content of free alkali in the soap-alkaline solution, regulating the selection of the soap-alkaline solution according to the level of separation of the media, regulating the performance of the neutralizer according to the maximum permissible established loss of oil solution by changing the amount of product to be taken when comparing the flow of soap-alkaline solution with a predetermined allowable value and regulating the supply oil in the neutralizer on the level of the finished product. 1 il.

Description

The invention relates to the food and chemical industries, preferably oil and fat, and can be used in the management of a continuous alkaline process of neutralizing free fatty acids. . -acids from vegetable oils and fats and separation of the phases in a 1-base alkaline medium.

The purpose of the invention is to increase the yield of the target product.

The drawing shows a diagram illustrating a method for automatically controlling the process of neutralizing fats in a soap-alkaline solution,

The installation consists of a neutralizer 1, pipelines 2-5 for supplying fat and an alkali solution for neutralization, for removing the soap-alkaline solution and neutralized oil. A sensor 6 is installed on line 4, which controls the content of free alkali in the discharged soap-alkaline solution and through the secondary device 7 and the regulator 8 acts on the actuator 9 with a control valve installed on the pipe 3 supplying the alkali solution to the neutralizer 1,

Regulation of the phase separation level M) The alkaline solution — the neutralized oil is carried out by the sensor 10 with the secondary device 11 connected to the controller 12, which controls the actuator

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13 of the control valve installed on the pipe 4 of the exhaust of the spent alkaline solution from the neutralizer 1,

The amount of oil loss is proportional to the amount of soap-alkaline solution withdrawn and for each specific neutralizer is a functional dependence, Consequently, to limit these losses at a known level, it is necessary to limit the flow of the alkaline solution, respectively alkali solution. , 15 And the amount of alkaline solution supplied at a constant concentration is determined by the amount of incoming fatty acids in the composition of the oil for neutralization, i.e. number and 20

acidity. Therefore, to limit the loss of oil at a known acceptable level can be a corresponding restriction of the supply of oil to neutralize and the selection of the finished product. For this purpose, a sensor 14 is installed at the top of the neutralizer 1 for measuring the level of neutralized oil, the signal from which is fed to the secondary device 15 and the regulator 16, the control actuator 17 of the control valve installed in the fat supply pipe 2 to the neutralizer 1 .

A flow meter 18 is installed on the pipe 4 for discharging the soap-alkaline solution, which is connected via the secondary device 19 to the first input of the controller 20. The output of the controller 20 is connected to the actuator 21 of the control valve installed on the pipe 5 for the neutralization of oil. The second input of the regulator 20 receives a signal from the setting device 22, the maximum allowable for the consumption of soap and alkaline solution.

The method of automatic control of the neutralizer is carried out as follows.

The pipeline 2 in the neutralizer 1 enters the oil through the pipeline. water 3 - alkali solution. In the lower part of the neutralizer is

soap-alkaline solution, top

the level of which is measured by the GO sensor. In the upper part there is a neutralized oil, which is discharged to the pipeline 5. Removal of the soap-alkaline solution is carried out through pipeline 4 and adjust, depending on the level of the section, the alkaline solution — the neutralized oil measured by the sensor, 10 n signal from the latter through The secondary device 11 enters the regulator 12, which controls the actuator 13 of the control valve of the soap-alkaline solution and maintains the level of media separation constant. The signal from the sensor of the neutralized oil level 14 through the secondary device 15 is fed to the regulator 16 controlling the actuator 17 of the oil control valve for neutralization, i.e. regulate the oil supply for neutralization depending on the level of the neutralized oil and thereby maintain constant. The signal from the sensor 6 installed in the pipeline 4, which changes the content of free alkali in the discharged soap-alkaline solution, through the secondary device 7 enters the regulator 8, which controls the actuator of the alkali supply control valve, i.e. adjusting the alkali supply depending on the content of free alkali in the soap-alkaline solution and maintaining the content of free alkali at the required level.

The signal from the flow meter 18 of the spent lye-alkaline solution through the secondary device 19 is fed to the first input of the regulator 20, to the second input of which the signal from the setting device 22 receives the maximum permissible flow rate of the alkaline solution, i.e. maximum allowable loss of oil.

The output of the regulator 20 is connected to the actuator 21, which regulates the discharge of neutralized oil, depending on the consumption of the discharged soap-alkaline solution. While the signal of the flow meter 18 at the first input of the regulator 20 does not exceed the signal at the second input from the setting device 22, the output signal of the regulator 20 opens the control valve completely. In this case, the capacity of the neutralizer is fully determined by the current selection of the neutralized oil, followed by 1m technology.

With a certain equipment, at a certain flow rate of the neutralized oil being withdrawn, the sensor 14 measures its level and through the secondary device 15 and the controller 16 acts on the control valve of the oil supply to - neutralization, which ensures the level stability. The free alkali content sensor 6 in the discharged soap-Q alkaline solution through the secondary device 7 and the regulator 8 acts on the alkaline solution supply control valve for neutralization to maintain the free alkali content 15 at a predetermined level. The medium level sensor 10 neutralized oil - soap-alkaline solution through the secondary device 11 and the regulator 12 acts on the control valve 20 13 for discharging the spent soap-alkaline solution and maintains the level of medium separation constant.

Let the selection of neutralized oil now increase, and the acidity 25 of the oil supplied to neutralize will remain the same. At the same time, the level of neutralized oil will decrease, which will be sensed by the sensor 14 and through the secondary device 15 acts on the controller 16, at the output of which the control signal of the increase in the oil supply regulates. Sensor 6 will detect a decrease in the content of free alkali in

discharged soap-alkaline solution and through the secondary device 7 acts on the regulator 8, which by means of a control valve will increase the supply of alkali to neutralization. An increase in the level of media separation will take the sensor 10 and, through the secondary device 11, acts on the regulator 12, which by means of a control valve will increase the drainage of the spent soap and alkaline solution. If the signal from the secondary device 19 of the flow meter 18 at the first input of the regulator 20 exceeds the signal at the second input from the setting device 22, i.e.

If the flow rate of the soap-alkaline solution of the HEP is high, the permissible level of loss of entrained oil, then at the output of the regulator 20, the signal to reduce the selection of neutralized oil is given, g is fed to the actuator 21 of the control valve. After that, the sensor of the 14 level neutralized oil through the secondary device

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15, the regulator 16 and the regulating cap reduce the supply of oil for neutralization, the sensor 6 of free alkali content in the discharged soap-alkaline solution through the secondary device 7, the regulator 8 and the control valve will reduce the supply of alkali solution, and the sensor 10 of the media separation level through the secondary device .11, the regulator 12 and the control valve will reduce the discharge of the spent soap-alkaline solution, i.e. returns the loss of oil to the downstream limits. As the acidity of the incoming oil increases, the amount of alkali required to neutralize it also increases, and, consequently, the amount of soap-alkaline solution removed. In this case, the operation algorithm of the control device will be similar.

This automatic control method provides the required value of the current capacity of the neutralizer as an integral part of the continuous oil processing line, the performance change depending on the specific production conditions while maintaining the high quality of the neutralization process and limiting it to the maximum possible level as much as possible. losses of oil, which is achieved by a new sequence of control actions implemented with the help of and additionally installed to control, measuring and control devices and actuators. The device can be used to control any type of continuous neutralizer.

The formula of the invention. A method for automatically controlling the process of neutralizing fats in a soap-alkaline solution, which involves measuring the flow rate of a discharging soap-alkaline solution, regulating alkali supply depending on the content of free alkali in a soap-alkaline solution, and regulating the supply of oil for neutralization differing in that, in order to increase the yield of the target pro-; Due to the improvement of the quality of control, the level of medium separation is measured by a soap-alkaline solution — neutralized oil and the level of neu -1472486

depending on the flow rate of the soap-alkaline solution and the soap-alkaline solution, depending on the level

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The media section of the soap-alkaline solution is a neutralized oil, and the regulation of the oil supply for neutralization is carried out depending on the level of the neutralized oil.

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Claims (1)

The formula and the valve will increase the drainage of the spent soap-alkaline solution. If the signal from the secondary device 19 of the flow meter 18 at the first input of the controller 20 exceeds the signal at the second input from the setter 22, i.e. soap-alkaline solution flow rate will exceed the allowable level for loss of entrained oil, then at the output of the regulator 20 a signal will appear to reduce the selection of neutralized oil supplied to the actuator 21 of the control valve, After that, the sensor 14 for the level of neutralized oil through a secondary 'device 45 A method for automatically controlling the process of neutralizing fats in a soap-alkaline solution, which includes measuring the flow rate of the removed soap-alkaline solution, adjusting the alkali supply depending on the content of free alkali in the soap-alkaline solution, and regulating the oil supply for neutralization ^ characterized in that , from 55 in order to increase the yield of the target product by improving the quality of management, measure the level of separation of mediums of a soap-alkaline solution of neutralized oil and the level of 7 neutralized oil, regulate the discharge of neutralized oil depending on the flow rate of the soap-base solution and soap-alkaline solution, depending on the level of medium separation soap-alkaline solution - neutralized oil, and regulation of oil supply for neutralization is carried out depending on the level of neutralized oil.