CN115141899A - A balanced control system for filtered juice subsides clarification fast - Google Patents
A balanced control system for filtered juice subsides clarification fast Download PDFInfo
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- CN115141899A CN115141899A CN202210701771.8A CN202210701771A CN115141899A CN 115141899 A CN115141899 A CN 115141899A CN 202210701771 A CN202210701771 A CN 202210701771A CN 115141899 A CN115141899 A CN 115141899A
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- 235000011389 fruit/vegetable juice Nutrition 0.000 title claims abstract description 165
- 238000005352 clarification Methods 0.000 title claims abstract description 26
- 239000000463 material Substances 0.000 claims abstract description 39
- 238000000034 method Methods 0.000 claims abstract description 36
- 230000008569 process Effects 0.000 claims abstract description 28
- 238000004062 sedimentation Methods 0.000 claims abstract description 23
- 238000010438 heat treatment Methods 0.000 claims abstract description 14
- NBIIXXVUZAFLBC-UHFFFAOYSA-N Phosphoric acid Chemical compound OP(O)(O)=O NBIIXXVUZAFLBC-UHFFFAOYSA-N 0.000 claims description 63
- 229910000147 aluminium phosphate Inorganic materials 0.000 claims description 33
- 239000004571 lime Substances 0.000 claims description 26
- 235000008733 Citrus aurantifolia Nutrition 0.000 claims description 23
- 235000011941 Tilia x europaea Nutrition 0.000 claims description 23
- 239000008394 flocculating agent Substances 0.000 claims description 21
- 235000013336 milk Nutrition 0.000 claims description 19
- 239000008267 milk Substances 0.000 claims description 19
- 210000004080 milk Anatomy 0.000 claims description 19
- 239000007788 liquid Substances 0.000 claims description 15
- 230000001105 regulatory effect Effects 0.000 claims description 10
- 230000001276 controlling effect Effects 0.000 claims description 3
- 230000005540 biological transmission Effects 0.000 claims description 2
- 230000000694 effects Effects 0.000 abstract description 20
- 230000009467 reduction Effects 0.000 abstract description 9
- 238000004519 manufacturing process Methods 0.000 abstract description 8
- 239000012535 impurity Substances 0.000 abstract description 4
- 239000006185 dispersion Substances 0.000 abstract 1
- 235000000346 sugar Nutrition 0.000 description 7
- QORWJWZARLRLPR-UHFFFAOYSA-H tricalcium bis(phosphate) Chemical compound [Ca+2].[Ca+2].[Ca+2].[O-]P([O-])([O-])=O.[O-]P([O-])([O-])=O QORWJWZARLRLPR-UHFFFAOYSA-H 0.000 description 7
- 210000000481 breast Anatomy 0.000 description 6
- 239000001506 calcium phosphate Substances 0.000 description 5
- 229910000389 calcium phosphate Inorganic materials 0.000 description 5
- 235000011010 calcium phosphates Nutrition 0.000 description 5
- 238000004134 energy conservation Methods 0.000 description 4
- 230000006872 improvement Effects 0.000 description 4
- 239000000047 product Substances 0.000 description 4
- BHPQYMZQTOCNFJ-UHFFFAOYSA-N Calcium cation Chemical compound [Ca+2] BHPQYMZQTOCNFJ-UHFFFAOYSA-N 0.000 description 3
- 229910001424 calcium ion Inorganic materials 0.000 description 3
- 230000008859 change Effects 0.000 description 3
- 238000001914 filtration Methods 0.000 description 3
- 235000021552 granulated sugar Nutrition 0.000 description 3
- 239000013049 sediment Substances 0.000 description 3
- 230000003749 cleanliness Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000005189 flocculation Methods 0.000 description 2
- 230000016615 flocculation Effects 0.000 description 2
- 238000012544 monitoring process Methods 0.000 description 2
- 239000002245 particle Substances 0.000 description 2
- 239000002244 precipitate Substances 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- 235000007201 Saccharum officinarum Nutrition 0.000 description 1
- 240000000111 Saccharum officinarum Species 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 239000000654 additive Substances 0.000 description 1
- 230000000996 additive effect Effects 0.000 description 1
- 239000000084 colloidal system Substances 0.000 description 1
- 238000004042 decolorization Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 238000007689 inspection Methods 0.000 description 1
- 239000000049 pigment Substances 0.000 description 1
- 238000001556 precipitation Methods 0.000 description 1
- 238000004886 process control Methods 0.000 description 1
- 238000001179 sorption measurement Methods 0.000 description 1
- 238000005406 washing Methods 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Images
Classifications
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- C—CHEMISTRY; METALLURGY
- C13—SUGAR INDUSTRY
- C13B—PRODUCTION OF SUCROSE; APPARATUS SPECIALLY ADAPTED THEREFOR
- C13B20/00—Purification of sugar juices
- C13B20/02—Purification of sugar juices using alkaline earth metal compounds
-
- C—CHEMISTRY; METALLURGY
- C13—SUGAR INDUSTRY
- C13B—PRODUCTION OF SUCROSE; APPARATUS SPECIALLY ADAPTED THEREFOR
- C13B20/00—Purification of sugar juices
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- Chemical & Material Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Biochemistry (AREA)
- Organic Chemistry (AREA)
- Paper (AREA)
Abstract
The invention discloses a balanced control system for rapid sedimentation and clarification of filtered juice, which comprises a filtered juice storage tank, a heater, a steam dispersion tank, a buffer tank, a filtered juice rapid settler and a PLC control system for controlling the whole filtered juice sedimentation and clarification process, wherein the PLC control system mainly comprises a PC configuration operation panel, a PLC main control module, a filtered juice flow balanced control unit, a filtered juice heating control unit and an auxiliary material addition constant ratio control unit. The invention solves the technical problems that the impurity settling effect is not ideal and the stable control of a single auxiliary material can only be realized due to unbalanced filtered juice conveying in the prior filtered juice clarification process, and the like, and has the advantages of high product quality, energy saving, consumption reduction and production cost reduction by utilizing a flow grading and balancing control method.
Description
Technical Field
The invention belongs to the technical field of control of a juice filtering and clarifying process for sugar production of sugarcane.
Background
With the rapid development of new technology and new equipment in sugar industry, in order to reduce the pressure of production and environmental protection, reduce the pollution of washing and filtering water and achieve the purposes of energy conservation and emission reduction, sugar mills widely use a filter cloth-free vacuum suction filter to treat mud juice from a settler, and the filtered juice generated by the vacuum suction filter is clarified by a rapid sedimentation process.
The traditional filter cloth-free filtered juice rapid sedimentation process mainly comprises the steps of heating filtered juice to 85-95 ℃, enabling the filtered juice to flow into a steam dispersing box, enabling the filtered juice to enter a rapid sedimentation device for sedimentation, adding a flocculating agent into a pipeline between the steam dispersing box and the rapid sedimentation device, and trapping various suspended particles to obtain clear filtered juice.
In order to obtain better filtered juice quality, phosphoric acid is added in some sugar mills on the basis of the traditional filtered juice quick-settling process, colloidal substances and pigments in the filtered juice are further adsorbed, precipitated and removed by utilizing the decolorization and adsorption action of calcium phosphate, and the clear filtered juice is obtained, but because the residual calcium ions in the filtered juice are insufficient, the formed calcium phosphate sediments are few, and the color value and the turbidity of the filtered juice are still not ideal.
According to the technical requirements of filtered juice quick sedimentation, in order to realize stable control of the process, some sugar mills implement balanced and stable control on the flow of filtered juice and the addition of auxiliary materials (flocculant and phosphoric acid), and are provided with an electromagnetic flowmeter, an electric regulating valve, a liquid level meter and the like, so that the filtered juice quantity enters a quick sedimentation device to be relatively stable and gentle, and the addition of the auxiliary materials is relatively stable, thereby reducing the problem of unstable control of the process caused by manual control.
The unbalanced conveying of the filtered juice causes the impurity settling effect to be unsatisfactory, once the filtered juice storage tank is pumped out, air enters the centrifugal pump and is crushed into very fine bubbles by the rotating centrifugal pump blades, the fine bubbles are attached to the surface of precipitated particles, precipitates are easy to float to form scum, the quality of the filtered juice and the balanced stability of production are influenced, and the reasonable control of the flow of the filtered juice is the key of a filtered juice fast settling system.
The effective control of the temperature of the filtered juice directly influences the clarification effect of the filtered juice, the temperature control has good flocculation effect of the filtered juice when being optimal, the sedimentation speed of the sediment is high, and the cleanliness of the filtered juice is high, so the stable control of the temperature plays an important role in the clarification effect of the filtered juice.
The traditional clarification process of the filtered juice only adds auxiliary materials such as flocculant and phosphoric acid, the addition of the auxiliary materials in the clarification process of the filtered juice can only realize the stable control of a single auxiliary material, and when the pH value of the filtered juice is low, the phosphoric acid can be added in a very small amount or not, so that the formed calcium phosphate salt is less in sedimentation, and the clarification effect of the filtered juice is not ideal.
The domestic patent database discloses a plurality of similar technical reports of cane juice clarification process control systems in recent years: CN201620376163.4 and CN205710774U, which disclose a balanced control device for a filtered juice quick settler in a sugar refinery, the device comprises a buffer tank, an air dispersing tank, a mixing tank and a filtered juice quick settler, wherein the buffer tank is connected with the air dispersing tank through a flowmeter and an adjusting valve, a stop valve is arranged between an outlet of the buffer tank and an inlet of the air dispersing tank, and an overflow pipe is arranged at the upper part of the buffer tank and connected with the air dispersing tank; after the air dispersing box is connected with the mixing box, the filtered juice quick settler is connected. However, the device can only solve the problems of stable feeding of filtered juice and stable feeding of phosphoric acid and flocculating agent, when the flow set value of the filtered juice is changed, the additive amount of the auxiliary material needs manual intervention to give parameters again to realize linkage control on the process, and the problem of constant ratio addition of the auxiliary material after the flow change of the filtered juice cannot be solved.
Disclosure of Invention
The invention provides a balanced control system for rapid sedimentation and clarification of filtered juice, which has the advantages of high product quality, energy conservation, consumption reduction and production cost reduction, and solves the technical problems that the impurity sedimentation effect is not ideal and only the stable control of a single auxiliary material can be realized due to unbalanced filtered juice conveying in the conventional filtered juice clarification process.
The invention provides a balanced control system for filtered juice rapid sedimentation and clarification, which comprises a filtered juice storage tank, a heater, an air dispersing tank, a buffer tank, a filtered juice rapid settler and a PLC control system for controlling the whole filtered juice sedimentation and clarification process, wherein the PLC control system mainly comprises a PC configuration operation panel, a PLC main control module, a filtered juice flow balanced control unit, a filtered juice heating control unit and an auxiliary material adding constant ratio control unit.
The filtered juice flow balance control unit comprises a filtered juice storage box, a liquid level meter, a filtered juice pump, a filtered juice flow meter and a pipeline, wherein the liquid level meter is arranged in the filtered juice storage box, the lower end of the filtered juice storage box is connected with the filtered juice pump through the pipeline, the outlet of the pump is connected with a heater through the pipeline, and the filtered juice flow meter is installed on the pipeline.
The juice filtering and heating control unit comprises a heater, a steam electric regulating valve and a pipeline, wherein the upper end of the heater is connected with a steam pipeline, and the steam electric regulating valve is installed on the steam pipeline.
The auxiliary material adds constant ratio control unit include the phosphoric acid storage tank, the phosphoric acid pump, the phosphoric acid flowmeter, lime breast storage tank, lime breast pump, lime breast flowmeter, the flocculating agent storage tank, the flocculating agent pump, flocculating agent flowmeter and pipeline, phosphoric acid storage tank lower extreme is by pipe connection to phosphoric acid pump, the pump export has pipe connection to surge-tank pipeline entrance, install the phosphoric acid flowmeter on the pipeline, lime breast storage tank lower extreme is by pipe connection to lime breast pump, the pump export has the pipe connection to in the surge-tank, install lime breast flowmeter on the pipeline, flocculating agent storage tank lower extreme is by pipe connection to flocculating agent pump, the pump export has pipe connection to filtered juice quick settling pipe pipeline entrance, install the flocculating agent flowmeter on the pipeline.
The PC configuration operation panel control system is configured by a computer, the PLC master control module calculates various analog data, and data transmission, storage and display are carried out between the computer and the PLC; the filtered juice flow balance control unit adopts a hierarchical balance control method, and the PLC master control module automatically adjusts the given value of the filtered juice flow according to the filtered juice flow requirement and the liquid level height of the filtered juice storage tank; the filtered juice heating control unit fuzzifies the detected filtered juice temperature and the set temperature value according to deviation and deviation rate by adopting fuzzy control, and the auxiliary material adding constant ratio control unit calculates the required auxiliary material adding amount through constant ratio.
The invention utilizes a flow grading and balancing control method to control the flow and simultaneously control the liquid level to participate in the protection control, the given value of the filtered juice flow is adjusted according to the liquid level of the filtered juice storage tank, different liquid levels correspond to different flow given values, the flow given value is uniformly increased or reduced, the fluctuation caused by sudden increase or reduction of the flow is prevented, meanwhile, the empty tank or the filtered juice is prevented from overflowing, a system PLC outputs a control signal to a filtered juice pump frequency converter after PID operation according to the filtered juice flow feedback value and the given value, the rotating speed of a filtered juice pump motor is adjusted, the purpose of adjusting the flow is achieved, and the precision of the flow meter in the flow full flow range is 0.3 level.
The effective control of the temperature of the filtered juice directly influences the clarification effect of the filtered juice, the temperature control has good flocculation effect of the filtered juice when being optimal, the sedimentation speed of the sediment is high, and the cleanliness of the filtered juice is high, so the stable control of the temperature plays an important role in the clarification effect of the filtered juice. Because the system is complex and has too many variables, the invention adopts a fuzzy control method to fuzzify the detected juice temperature and the temperature set value according to the deviation and the deviation rate, carries out reasoning according to the fuzzy programming suitable for the juice heating process control, converts the obtained fuzzy output quantity into an actual control signal, and finely adjusts the opening of the steam valve in a closed-loop control mode through the fine adjustment function of the variable frequency motor, the feedback quantity of the valve opening and the detected temperature signal so as to control the juice temperature in a required range.
The invention adopts a constant ratio control system, namely, the parameters of the three auxiliary materials can be automatically controlled by maintaining a certain ratio relation, the system adopts a mode of combining stroke adjustment and frequency adjustment of a metering pump to control the conveying of the auxiliary materials, the constant ratio adding mode that the adding amount of the three auxiliary materials can be changed along with the change of the flow of the filtered juice is realized, the stability of the process effect is ensured, and the problems of difficult cost control, large process effect fluctuation and the like caused by improper adding of the auxiliary materials are effectively avoided.
In the traditional clarification treatment process of the filtered juice, only auxiliary materials such as flocculating agent, phosphoric acid and the like are added, and when the pH value of the filtered juice is low, the phosphoric acid can be added in a very small amount or not added, so that the formed calcium phosphate salt is deposited little, and the clarification effect of the filtered juice is not ideal; the method has the advantages that the lime milk auxiliary material is added, more calcium ions are provided for the cane juice, more calcium phosphate precipitates are generated, and a lot of non-sugar, colored substances and colloids in the network cane juice can be adsorbed and removed together through sedimentation in the calcium phosphate precipitation generation process, so that the filtered juice quality is better; when the quality of the filtered juice is worse, the addition amount of the phosphoric acid and the lime milk can be adjusted by constant ratio, so that the phosphoric acid and the calcium ions react more fully, and the clarification effect of the filtered juice is greatly improved by utilizing the decoloration effect of the calcium phosphate.
The invention optimizes the technical scheme of clarifying the filtered juice, ensures that the filtered juice flow balance control, the filtered juice temperature stability control and the auxiliary material addition constant ratio control in the treatment process of the filtered juice rapid sedimentation clarification process have good effects, promotes the product quality to be improved, and has better effects on energy conservation and consumption reduction; after the improvement, the addition of the auxiliary materials is more stable and constant; the method has more obvious guidance effect on the optimal production selection process scheme in different periods and when materials change, solves the technical problems of poor rapid settling and impurity removal effect of the conventional filtered juice, high color value of the filtered juice, high turbidity and the like, and has the advantages of high product quality, energy conservation, consumption reduction and production cost reduction.
Drawings
FIG. 1 is a schematic diagram of the system architecture of the present invention.
Wherein: 101-PC configuration operation panel, 102-PLC main control module, 103-filtered juice flow balance control unit, 104-filtered juice heating control unit, 105-auxiliary material addition constant ratio control unit, 1-filtered juice storage tank, 2-level meter, 3-filtered juice pump, 4-filtered juice flowmeter, 5-heater, 6-steam electric regulating valve, 7-steam dispersing tank, 8-buffer tank, 9-filtered juice quick settler, 10-phosphoric acid storage tank, 11-phosphoric acid pump, 12-phosphoric acid flowmeter, 13-lime milk storage tank, 14-lime milk pump, 15-lime flowmeter, 16-flocculant storage tank, 17-flocculant pump, 18-flocculant flowmeter.
Detailed Description
The invention is further illustrated by the following specific figures and examples.
As shown in fig. 1, the device comprises a filtered juice storage tank 1, a heater 5, a steam dispersing tank 7, a buffer tank 8, a filtered juice rapid settler 9, and a PLC control system for controlling the whole filtered juice sedimentation and clarification process, wherein the PLC control system mainly comprises a PC configuration operation panel 101, a PLC main control module 102, a filtered juice flow equalization control unit 103, a filtered juice heating control unit 104, and an auxiliary material addition constant ratio control unit 105.
The filtered juice flow balance control unit 103 comprises a filtered juice storage tank 1, a liquid level meter 2, a filtered juice pump 3, a filtered juice flow meter 4 and a pipeline, wherein the liquid level meter 2 is arranged in the filtered juice storage tank 1, the lower end of the filtered juice storage tank 1 is connected with the filtered juice pump 3 through the pipeline, the outlet of the pump is connected with a heater 5 through the pipeline, and the filtered juice flow meter 4 is installed on the pipeline.
The filtered juice heating control unit 104 comprises a heater 5, a steam electric regulating valve 6 and a pipeline, wherein the upper end of the heater is connected with a steam pipeline, and the steam electric regulating valve 6 is installed on the steam pipeline.
The auxiliary material adding constant ratio control unit 105 comprises a phosphoric acid storage tank 10, a phosphoric acid pump 11, a phosphoric acid flow meter 12, a lime milk storage tank 13, a lime milk pump 14, a lime milk flow meter 15, a flocculating agent storage tank 16, a flocculating agent pump 17, a flocculating agent flow meter 18 and a pipeline, wherein the lower end of the phosphoric acid storage tank 10 is connected to the phosphoric acid pump 11 through a pipeline, a pump outlet is connected to the inlet of the pipeline of the buffer tank 8 through a pipeline, the phosphoric acid flow meter 12 is installed on the pipeline, the lower end of the lime milk storage tank 13 is connected to the lime milk pump 14 through a pipeline, a pump outlet is connected to the inside of the buffer tank 8 through a pipeline, the lime milk flow meter 15 is installed on the pipeline, the lower end of the flocculating agent storage tank 16 is connected to the flocculating agent pump 17 through a pipeline, the pump outlet is connected to the inlet of the pipeline of the filtered juice quick settler 9 through a pipeline, and the flocculating agent flow meter 18 is installed on the pipeline.
The control system of the PC configuration operation panel 101 can realize the manual and automatic switching given control of each auxiliary material pump, such as the operation and monitoring of an operator at a computer end, the actual flow value of filtered juice, the target value and the actual addition value of the auxiliary material addition, and the like through computer configuration; the start and stop operations of the field device can be monitored and controlled; and (5) modifying the control value of each auxiliary material. The flow of the filtered juice, the liquid level of the filtered juice storage tank, the running current and frequency of the phosphoric acid, the lime milk and the flocculating agent motor, the starting time, the stopping time, the running time and other process and equipment parameters of each pump can be recorded, and the inquiry and the tracing can be realized.
The PLC main control module 102 calculates various analog quantity data, transmits the data with a computer, receives external signals, and outputs corresponding control and display signals, equipment operation monitoring, fault alarming and the like; the flow balance control of the filtered juice, the stable control of the heating temperature of the filtered juice and the constant ratio control of the addition of various auxiliary materials are realized.
The filtered juice flow balance control unit 103 adopts a hierarchical balance control method, the PLC main control module 102 adjusts the given value of the filtered juice flow according to the filtered juice flow through the liquid level height of the filtered juice storage box 1, different liquid level sections correspond to different flow given values, the CPU outputs a control signal to the frequency converter after PID operation according to the filtered juice flow feedback value and the given value, and the rotating speed of the filtered juice pump 3 is adjusted through the frequency converter to achieve the purpose of adjusting the flow.
The filtered juice heating control unit 104 performs fuzzification processing on the detected filtered juice temperature and a set temperature value according to deviation and a deviation rate by adopting fuzzy control, converts the obtained fuzzy output into an actual control signal and feeds the actual control signal back to the variable-frequency electric regulating valve to regulate the opening degree of the steam electric regulating valve 6, and performs closed-loop control on the detected temperature signal, so that the filtered juice temperature is stably controlled within a process requirement range, and the difference between the control temperature and a target temperature is controlled within +/-1 ℃.
The auxiliary material adding constant ratio control unit 105 calculates the required auxiliary material adding amount through a constant ratio, the auxiliary material adding amount is converted into a control signal through a PLC program and transmitted to the frequency converter, the rotating speeds of the phosphoric acid pump 11, the lime milk pump 14 and the flocculating agent pump 17 are adjusted through the frequency converter, so that the flow of auxiliary materials (phosphoric acid, lime milk and flocculating agent) is adjusted, and the auxiliary material adding precision is higher than 0.5%. The implementation effect of the invention is as follows:
TABLE 1 comparison of data before and after improvement of clarification process of filtered juice
As can be seen from Table 1, the results of the inspection of the season production show that the color value of the filtered juice is reduced by about 12% and the turbidity of the filtered juice is reduced by 90% after the technology of the invention is used for process improvement.
TABLE 2 comparison table of quality of white granulated sugar product before and after improvement of filtered juice sedimentation process
As can be seen from Table 2, after the filtered juice sedimentation process is improved, the color value of the white granulated sugar is slightly reduced, and the turbidity of the white granulated sugar is reduced by 15%.
Claims (2)
1. The utility model provides a balanced control system for filtered juice settles clarification fast, includes filtered juice storage tank (1), heater (5), steam dispersing box (7), baffle-box (8), filtered juice fast settling vessel (9), its characterized in that: the device also comprises a PLC control system for controlling the whole filtered juice sedimentation and clarification process, wherein the PLC control system mainly comprises a PC configuration operation panel (101), a PLC main control module (102), a filtered juice flow balance control unit (103), a filtered juice heating control unit (104) and an auxiliary material addition constant ratio control unit (105);
the filtered juice flow balance control unit (103) comprises a filtered juice storage box (1), a liquid level meter (2), a filtered juice pump (3), a filtered juice flow meter (4) and a pipeline, wherein the liquid level meter (2) is arranged in the filtered juice storage box (1), the lower end of the filtered juice storage box (1) is connected with the filtered juice pump (3) through the pipeline, the outlet of the pump is connected with a heater (5) through the pipeline, and the filtered juice flow meter (4) is installed on the pipeline;
the filtered juice heating control unit (104) comprises a heater (5), an electric steam regulating valve (6) and a pipeline, wherein the upper end of the heater is connected with a steam pipeline, and the electric steam regulating valve (6) is installed on the steam pipeline;
the auxiliary material adding constant ratio control unit (105) comprises a phosphoric acid storage tank (10), a phosphoric acid pump (11), a phosphoric acid flowmeter (12), a lime milk storage tank (13), a lime milk pump (14), a lime milk flowmeter (15), a flocculant storage tank (16), a flocculant pump (17), a flocculant flowmeter (18) and a pipeline; the lower end of the phosphoric acid storage tank (10) is connected to a phosphoric acid pump (11) through a pipeline, the pump outlet is connected to the inlet of the pipeline of the buffer tank (8) through a pipeline, and a phosphoric acid flowmeter (12) is arranged on the pipeline; the lower end of the lime milk storage tank (13) is connected to a lime milk pump (14) through a pipeline, the outlet of the pump is connected into the buffer tank (8) through a pipeline, and a lime milk flow meter (15) is installed on the pipeline; the lower end of the flocculating agent storage tank (16) is connected to a flocculating agent pump (17) through a pipeline, the outlet of the pump is connected to the inlet of the filtered juice quick settler (9) through a pipeline, and a flocculating agent flow meter (18) is arranged on the pipeline.
2. The equalizing control system for rapid sedimentation clarification of filtered juice according to claim 1, wherein: the control system of the PC configuration operation panel (101) is used for operating analog quantity data through a PLC main control module (102) through computer configuration, and data transmission, storage and display are carried out between a computer and a PLC; the filtered juice flow balance control unit (103) adopts a grading balance control method, and the PLC main control module (102) automatically adjusts the given value of the filtered juice flow according to the filtered juice flow requirement and the liquid level of the filtered juice storage tank (1); the filtered juice heating control unit (104) fuzzifies the detected filtered juice temperature and a set temperature value according to deviation and deviation rate by adopting fuzzy control; the auxiliary material addition constant ratio control unit (105) calculates the required auxiliary material addition amount through a constant ratio.
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| CN202210701771.8A CN115141899A (en) | 2022-06-21 | 2022-06-21 | A balanced control system for filtered juice subsides clarification fast |
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| CN202210701771.8A CN115141899A (en) | 2022-06-21 | 2022-06-21 | A balanced control system for filtered juice subsides clarification fast |
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Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105238886A (en) * | 2015-11-12 | 2016-01-13 | 南宁糖业股份有限公司 | Brown granulated sugar redissolution proportioning system |
| CN110669874A (en) * | 2018-12-21 | 2020-01-10 | 广东省生物工程研究所（广州甘蔗糖业研究所） | Efficient sugar juice cleaning method for high-quality white sugar production |
| CN217628437U (en) * | 2022-06-21 | 2022-10-21 | 南宁糖业股份有限公司 | A balanced control system for filtered juice subsides clarification fast |
-
2022
- 2022-06-21 CN CN202210701771.8A patent/CN115141899A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105238886A (en) * | 2015-11-12 | 2016-01-13 | 南宁糖业股份有限公司 | Brown granulated sugar redissolution proportioning system |
| CN110669874A (en) * | 2018-12-21 | 2020-01-10 | 广东省生物工程研究所（广州甘蔗糖业研究所） | Efficient sugar juice cleaning method for high-quality white sugar production |
| CN217628437U (en) * | 2022-06-21 | 2022-10-21 | 南宁糖业股份有限公司 | A balanced control system for filtered juice subsides clarification fast |
Non-Patent Citations (2)
| Title |
|---|
| 廖玉;: "糖厂无滤布吸滤机滤汁沉降工艺的改进", 广西糖业, no. 02, 30 April 2016 (2016-04-30), pages 25 - 26 * |
| 黄爽;叶权圣;秦健南;易豪武;秦会敏;李浩洋;陈骏佳;: "自动化控制在滤汁快沉系统中的应用", 轻工科技, no. 07, 31 July 2013 (2013-07-31), pages 28 - 29 * |
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