CN104034687B - A kind of Semen Maydis oil acid value Online Monitoring Control System - Google Patents
A kind of Semen Maydis oil acid value Online Monitoring Control System Download PDFInfo
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- CN104034687B CN104034687B CN201410223782.5A CN201410223782A CN104034687B CN 104034687 B CN104034687 B CN 104034687B CN 201410223782 A CN201410223782 A CN 201410223782A CN 104034687 B CN104034687 B CN 104034687B
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- acid value
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Abstract
The invention discloses a kind of Semen Maydis oil acid value Online Monitoring Control System, including the crude oil storage tank to be processed, blender, separation equipment and the finished product storage tank that are sequentially connected with by transmission pipeline, crude oil storage tank to be processed is between blender, and separation equipment is respectively equipped with a sample extraction and analytical equipment and No. two sample extraction and analytical equipment on the transmission pipeline between finished product storage tank, after Semen Maydis oil crude oil sample acid value is carried out extraction and analysis, acid value data are sent to PLC.Crude oil storage tank to be processed is provided with electronic flowmeter to the transmission pipeline between sample extraction and analytical equipment, sends the crude oil data on flows measured to PLC；Adjuvant temporary storage tank is connected with blender by electronic metering pump；Acid value data and crude oil data on flows are calculated by PLC, control electronic metering pump and are controlled adjuvant addition.The present invention realizes acid value by the interpolation of on-line monitoring Semen Maydis oil acidity controlled complement and automatically controls.
Description
Technical field
The present invention relates to acid value of lipids monitoring field, particularly relate to a kind of Semen Maydis oil acid value Online Monitoring Control System, this
Invention is equally applicable to the edible oil field of deep of same process.
Background technology
Acid value of lipids also known as acid value of oil and fat, it be fixed etc. the elementary item of the edible oil such as Semen Maydis oil, Oleum Arachidis hypogaeae semen, soybean oil it
One, it is the important indicator of oil and fat refining degree and storage stability, when being also oil alkali refining deacidification, calculates the foundation of alkali charge, because of
This, measure acid value of lipids rapidly and accurately and have certain realistic meaning.Traditional method is utilized in the change that laboratory is carried out
Method, both wasted time and energy, and easily pollutes environment because using chemical reagent again, operator are required height, can not realize online
Analyze.
Traditional test in laboratory assay method can only carry out intermittent operation, cannot realize accurate and quick online inspection
The problems such as survey, this system can shorten the detection cycle, and achieves acid value on-line checking and regulation and control in course of oil processing.Semen Maydis hair
In the oil course of processing, the addition of adjuvant in degumming and deacidifying process flow process is played a decisive role by the acid value of crude oil, native system
By on-line monitoring to preprocessing crude oil acid value can automatically calculate and control the addition of adjuvant.
Summary of the invention
In order to overcome in prior art the deficiency of chemical assay acid value method in existing commercial production, the present invention provides a kind of
Semen Maydis oil acid value Online Monitoring Control System, realizes acid value by the interpolation of on-line monitoring Semen Maydis oil acidity controlled complement and automatically controls
System.
For achieving the above object, the present invention adopts the following technical scheme that:
A kind of Semen Maydis oil acid value Online Monitoring Control System, is deposited including the crude oil to be processed being sequentially connected with by transmission pipeline
Storage tank, blender, separation equipment and finished product storage tank, the Semen Maydis oil crude oil of crude oil storage tank to be processed storage is defeated through transmission pipeline
Delivering to blender, Semen Maydis oil crude oil is carried out being delivered to separation equipment, separation equipment pair after adjuvant adds chemical reaction by blender 7
Semen Maydis oil crude oil after adjuvant adds carries out waste liquid isolated Semen Maydis oil finished product, and is delivered to finished product storage tank and stores.
Crude oil storage tank to be processed is between blender, and separation equipment is on the transmission pipeline between finished product storage tank
It is respectively equipped with a sample extraction and analytical equipment and No. two sample extraction and analytical equipment, a sample extraction and analytical equipment
After Semen Maydis oil crude oil sample acid value being carried out extraction and analysis with No. two sample extraction and analytical equipment, acid value data are sent to PLC
Controller.
Crude oil storage tank to be processed is additionally provided with electronic flowmeter on the transmission pipeline between sample extraction and analytical equipment,
The crude oil data on flows measured is sent to PLC by electronic flowmeter；Blender is provided with adjuvant temporary storage tank, adjuvant temporary storage tank
It is connected with blender by electronic metering pump；PLC utilizes existing formula to enter acid value data and crude oil data on flows
Row calculates, and obtains required adjuvant addition, controls electronic metering pump and is controlled adjuvant addition.
Further, sample extraction device and sample automatic analyzer, described sample extraction device is in transmission pipeline acid
Extracting oil sample at valency monitoring point and be delivered to sample automatic analyzer, oil sample acid value is entered by described sample automatic analyzer
Acid value data are sent to PLC after analyzing by row.
Sample extraction device is the plumbing installation of provided with electromagnetic valve, and this plumbing installation one end is arranged on the monitoring of transmission pipeline acid value
At Dian, the other end is connected with sample automatic analyzer, and centre is provided with electromagnetic valve, controls this pipeline by electromagnetic valve and fills
Put opened/closed.Plumbing installation is the colourless transparent glass pipeline of length 10cm, its a diameter of 2cm, this pipe diameter and length
Degree setting is more beneficial for oils and fats sample extraction and extracted amount controls；Electromagnetic valve is controlled it by PLC output electromagnetic pulse and opens
Opening and closing conjunction, and open the time interval between Guan Bi, described PLC processes according to the data of sample automatic analyzer
Rate-adaptive pacemaker controls the electromagnetic pulse of electromagnetic valve.
Sample automatic analyzer is near-infrared oils and fats analyser, and sample extraction device is extracted by near-infrared oils and fats analyser
Oil sample carries out near-infrared spectrum analysis, obtains oil sample acid value data, sends to PLC.
Further, No. two sample extraction and analytical equipment are provided with feedback to the transmission pipeline between finished product storage tank
Mouthful, described feedback port is communicated to crude oil storage tank to be processed by feedback channel.
Further, feedback channel is provided with a solenoid electric valve, the conveying pipe between feedback port to finished product storage tank
Road is provided with No. two solenoid electric valves, PLC according to acid value data and crude oil data on flows control a solenoid electric valve and
The opened/closed of No. two solenoid electric valves.
Further, PLC judges whether the acid value data of No. two sample extraction and analytical equipment conveying meet
Finished product requirement, i.e. less than 0.5mgKOH/g, if so, opens No. two solenoid electric valves, closes a solenoid electric valve；Otherwise, close
Closing No. two solenoid electric valves, open a solenoid electric valve, the Semen Maydis oil crude oil after being separated by separation equipment waste liquid is through feedback pipe
Road is delivered to crude oil storage tank to be processed.
Further, adjuvant temporary storage tank storage adjuvant is the NaOH aqueous solution of liquid 18-20Be °.
Beneficial effect: (1) present invention achieves acid value on-line checking and regulation and control in course of oil processing, shortens detection week
Phase, and reduce manual operation factor guarantee constant product quality, and reduce cost of labor.(2) present invention uses closed loop control system
System, carries out the double sampling after adjuvant interpolation, and meets finished product requirement by solenoid electric valve control output Semen Maydis oil crude oil
Semen Maydis oil crude oil, improve control accuracy, and ensure end product quality.
Accompanying drawing explanation
A kind of Semen Maydis oil acid value Online Monitoring Control System structural representation that Fig. 1 provides for the present invention.
Fig. 2 is the sample extraction in Fig. 1 and analytical equipment structural representation.
A kind of Semen Maydis oil acid value Online Monitoring Control System workflow diagram that Fig. 3 provides for the present invention.
Detailed description of the invention
Below in conjunction with the accompanying drawings the present invention is further described.
As it is shown in figure 1, a kind of Semen Maydis oil acid value Online Monitoring Control System that the present invention provides, deposit including crude oil to be processed
Storage tank 1, blender 7, separation equipment 6 and finished product storage tank 5, the Semen Maydis oil crude oil of crude oil storage tank 1 to be processed storage is through transmission
Pipeline is delivered to blender 7, carries out being delivered to separation equipment 6 after adjuvant adds chemical reaction at blender 7, and separation equipment 6 enters
Semen Maydis oil finished product is delivered to finished product storage tank 5 after separating and stores by row waste liquid.
The present invention is between crude oil storage tank 1 to be processed to blender 7, and separation equipment 6 arrives between finished product storage tank 5
Transmission pipeline on two monitoring points are set, each monitoring point uses a sample extraction and analytical equipment 3 to carry out oil sample
Extract and acid value analysis, respectively No. one sample extraction and analytical equipment 3 and No. two sample extraction and analytical equipment 3.Such as Fig. 2 institute
Showing, sample extraction and analytical equipment 3 include that sample extraction and analytical equipment 3 include that sample extraction device 10 and sample automatically analyze
Instrument 11, described sample extraction device 10 extracts oil sample at transmission pipeline acid value monitoring point and is delivered to sample automatic analyzer
11, acid value data are sent to PLC after being analyzed oil sample acid value by described sample automatic analyzer 11.Sample
Extraction element 10 is the plumbing installation of provided with electromagnetic valve, and this plumbing installation one end is arranged at transmission pipeline acid value monitoring point, another
End is connected with sample automatic analyzer 11, and centre is provided with electromagnetic valve 12, controls this plumbing installation by electromagnetic valve 12
Opened/closed.Plumbing installation is the colourless transparent glass pipeline of length 10cm, its a diameter of 2cm；Described electromagnetic valve 12 is by PLC
Controller output electromagnetic pulse controls it and opens, closes, and opens the time interval between Guan Bi, described PLC root
Process rate-adaptive pacemaker according to the data of sample automatic analyzer 11 and control the electromagnetic pulse of electromagnetic valve 12.Sample automatic analyzer 11 is
Near-infrared oils and fats analyser, the oil sample that sample extraction device 10 is extracted by described near-infrared oils and fats analyser carries out near-infrared
Spectrum analysis, obtains oil sample acid value data, sends to PLC.
In the degumming deacidifying process of oils and fats, the change of acid value is by adding adjuvant (NaOH), warp after mixing in oils and fats
Separate to qualified products and the accessory such as impurity, soap stock.Calculating for the ease of adjuvant addition, the present invention is at crude oil to be processed
Storage tank 1 is additionally provided with electronic flowmeter 2 on the transmission pipeline between sample extraction and analytical equipment 3, and electronic flowmeter 2 is same
The crude oil data on flows measured is sent to PLC.PLC utilizes existing formula and crude oil data on flows, acid value
Data can try to achieve the addition of adjuvant.Adjuvant temporary storage tank 9 is arranged on blender 7 by electronic metering pump 8 and carries out adjuvant and add
Adding, adjuvant addition is controlled by PLC by controlling electronic metering pump 8.
Additionally it is provided with feedback port, described feedback on present invention conveyance conduit after No. two sample extraction and analytical equipment 3
Mouth connects feedback channel extremely crude oil storage tank 1 to be processed, and feedback channel is provided with a solenoid electric valve 4, and feedback port is deposited to finished product
Conveyance conduit between storage tank 5 is provided with No. two solenoid electric valves 4.PLC receives No. two sample extraction and analytical equipment 3 passes
The acid value data sent, if acid value meets finished product requirement, open No. two solenoid electric valves 4, close a solenoid electric valve 4；If no
Meeting, close No. two solenoid electric valves 4, open a solenoid electric valve 4, the crude oil after being separated by separation equipment 6 carries again
To crude oil storage tank 1 to be processed, repeat said process and again carry out adjuvant interpolation, until the crude oil finished product acid value obtained conforms to
Ask.
Operation principle: Semen Maydis oil acid value Online Monitoring Control System uses said apparatus, installs after connection puts in place by equipment,
System components is carried out configuration by PLC configuration software wincc, programming software program each system module, be adapted
After this system can complete in grease processing technique, the oil acid value detection of degumming deacidification workshop section and control.
The acid value of crude oil oils and fats the most to be processed is generally 5-6(mgKOH/g), the present invention is hair after degumming deacidifying process is processed
The acid value of oil requires to control at 0.5(mgKOH/g) below, adjuvant is the NaOH aqueous solution of liquid 18-20Be °.PLC connects
Receive the crude oil flow V that electronic flowmeter 2 gathers, a sample extraction and analytical equipment 3 and No. two sample extraction and analytical equipment 3
Acid value data S1 of detection, S2, utilize existing formula, wherein, VAFor hair
Oleic acid valency, VA=S1-S2, G0Quality of crude oil, is multiplied by acquisition time according to crude oil flow V and calculates, and C is NaOH solution
Mass fraction, thus try to achieve adjuvant addition, and be converted to the flow control signal of adjuvant interpolation electronic metering pump 8, carry out auxiliary
Material adds.I.e. PLC crude oil flow V and acid value data S1 of two detections, S2 are as 3 variablees of system, and system is defeated
Output is the flow control signal that adjuvant adds electronic metering pump.
As it is shown on figure 3, native system is typical closed loop robot control system(RCS).Treated by a sample extraction and analytical equipment 3
Processing oils and fats carries out primary sample, and by sample automatic analyzer to sample analysis, by a sample extraction and analytical equipment 3
The analog data signal of output, by data line transfer to PLC, exports control signal by preset pid control parameter,
After electronic metering pump 8 accepts PLC output signal, adjuvant flow, simultaneously No. two sample extraction and analytical equipment 3 are added in regulation output
Crude oil after adding adjuvant is carried out secondary sample, repeats flow process noted earlier, control to adjust after element calculates by computer and PLC
The output flow of whole dosing pump, it is achieved the acid value of processing raw corn oil controls, when No. two sample extraction and analytical equipment 3 acid value accord with
Composite requirement, i.e. at 0.5(mgKOH/g) below, open No. two solenoid electric valves 4, close a solenoid electric valve 4；If no
Meeting, close No. two solenoid electric valves 4, open a solenoid electric valve 4, the crude oil after being separated by separation equipment 6 carries again
To crude oil storage tank 1 to be processed, adjust the output flow of dosing pump, until the crude oil finished product acid value obtained meets the requirements.
The above is only the preferred embodiment of the present invention, it should be pointed out that: for the ordinary skill people of the art
For Yuan, under the premise without departing from the principles of the invention, it is also possible to make some improvements and modifications, these improvements and modifications also should
It is considered as protection scope of the present invention.
Claims (8)
1. a Semen Maydis oil acid value Online Monitoring Control System, it is characterised in that: this system includes being connected successively by transmission pipeline
Crude oil storage tank 1 to be processed, blender 7, separation equipment 6 and the finished product storage tank 5 connect, described crude oil storage tank 1 to be processed is deposited
The Semen Maydis oil crude oil of storage is delivered to blender 7 through transmission pipeline, and described blender 7 carries out adjuvant and adds chemistry Semen Maydis oil crude oil
Being delivered to separation equipment 6 after reaction, the Semen Maydis oil crude oil after adjuvant is added by described separation equipment 6 carries out waste liquid isolated jade
Miyou finished product, and be delivered to finished product storage tank 5 and store；
Described crude oil storage tank to be processed 1 arrives between blender 7, and separation equipment 6 arrives the transfer tube between finished product storage tank 5
A sample extraction and analytical equipment 3 and No. two sample extraction and analytical equipment 3, a described sample extraction it is respectively equipped with on road
And Semen Maydis oil crude oil sample acid value is carried out acid value after extraction and analysis by analytical equipment 3 and No. two sample extraction and analytical equipment 3
Data send to PLC；
Described crude oil storage tank 1 to be processed is additionally provided with electronic flow on the transmission pipeline between sample extraction and analytical equipment 3
Meter 2, the crude oil data on flows measured is sent to PLC by described electronic flowmeter 2；It is temporary that described blender 7 is provided with adjuvant
Depositing tank 9, described adjuvant temporary storage tank 9 is connected with blender 7 by electronic metering pump 8；Described PLC is according to acid value data
Control electronic metering pump 8 with crude oil data on flows adjuvant addition is controlled；
Described sample extraction and analytical equipment 3 include sample extraction device 10 and sample automatic analyzer 11, described sample extraction
Device 10 extracts oil sample at transmission pipeline acid value monitoring point and is delivered to sample automatic analyzer 11, and described sample divides automatically
Acid value data are sent to PLC after being analyzed oil sample acid value by analyzer 11.
A kind of Semen Maydis oil acid value Online Monitoring Control System the most according to claim 1, it is characterised in that: described sample carries
It is the plumbing installation of provided with electromagnetic valve that fetching puts 10, and this plumbing installation one end is arranged at transmission pipeline acid value monitoring point, the other end
It is connected with sample automatic analyzer 11, and centre is provided with electromagnetic valve 12, control this plumbing installation by electromagnetic valve 12 and open
Open/close.
A kind of Semen Maydis oil acid value Online Monitoring Control System the most according to claim 2, it is characterised in that: described pipeline fills
It is set to the colourless transparent glass pipeline of length 10cm, its a diameter of 2cm；Described electromagnetic valve 12 is exported electromagnetism arteries and veins by PLC
Punching controls it and opens, closes, and opens the time interval between Guan Bi, and described PLC is according to sample automatic analyzer
The data of 11 process rate-adaptive pacemaker and control the electromagnetic pulse of electromagnetic valve 12.
A kind of Semen Maydis oil acid value Online Monitoring Control System the most according to claim 1, it is characterised in that: described sample is certainly
Dynamic analyser 11 is near-infrared oils and fats analyser, the oils and fats sample that sample extraction device 10 is extracted by described near-infrared oils and fats analyser
Product carry out near-infrared spectrum analysis, obtain oil sample acid value data, send to PLC.
A kind of Semen Maydis oil acid value Online Monitoring Control System the most according to claim 1, it is characterised in that: described No. two samples
Product extract and analytical equipment 3 is provided with feedback port to the transmission pipeline between finished product storage tank 5, and described feedback port is managed by feedback
Road is communicated to crude oil storage tank 1 to be processed.
A kind of Semen Maydis oil acid value Online Monitoring Control System the most according to claim 5, it is characterised in that: described feedback pipe
Road is provided with a solenoid electric valve 4, and the conveyance conduit between feedback port to finished product storage tank 5 is provided with No. two solenoid electric valves 4, institute
State PLC and control opening of a solenoid electric valve 4 and No. two solenoid electric valves 4 according to acid value data and crude oil data on flows
Open/close.
A kind of Semen Maydis oil acid value Online Monitoring Control System the most according to claim 6, it is characterised in that: described PLC is controlled
Device processed judges whether the acid value data of No. two sample extraction and analytical equipment 3 conveying meet finished product requirement, i.e. less than 0.5mgKOH/
G, if so, opens No. two solenoid electric valves 4, closes a solenoid electric valve 4；Otherwise, close No. two solenoid electric valves 4, open
A number solenoid electric valve 4, the Semen Maydis oil crude oil after being separated by separation equipment 6 waste liquid is delivered to crude oil to be processed through feedback channel and deposits
Storage tank 1.
A kind of Semen Maydis oil acid value Online Monitoring Control System the most according to claim 1, it is characterised in that: described adjuvant is temporary
Deposit tank 9 and store the NaOH aqueous solution that adjuvant is liquid 18-20Be °.
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| CN117660106A (en) * | 2023-12-29 | 2024-03-08 | 山东兴泉油脂有限公司 | Preparation monitoring method and system of nutritional healthy corn oil |
| CN117928655B (en) * | 2024-03-22 | 2024-07-05 | 济宁万生环保材料有限公司 | Material reaction instant acid value data on-line monitoring system |
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2014
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|---|---|---|---|---|
| JPH04127058A (en) * | 1990-09-19 | 1992-04-28 | Nippon Steel Corp | Method and apparatus for automatically analyzing acid value and saponification value of oil |
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| JP2011102703A (en) * | 2009-11-10 | 2011-05-26 | Nippon Steel Corp | Infrared absorption analysis method |
| CN201876413U (en) * | 2010-11-11 | 2011-06-22 | 哈尔滨商业大学 | Integrated automatic testing device based on computer vision for testing color and acid value of oil |
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Inventor after: Cheng Xinhang Inventor after: Wang Dai Inventor after: Wang Xiao Inventor after: Xing Jianbin Inventor after: Sun Shuhua Inventor after: Wang Shaozhen Inventor after: Du Jun Inventor before: Wang Dai Inventor before: Wang Xiao Inventor before: Xing Jianbin Inventor before: Sun Shuhua Inventor before: Wang Shaozhen Inventor before: Du Jun |
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