CN207655078U - Pressure type lime milk concentration online detection and control system - Google Patents
Pressure type lime milk concentration online detection and control system Download PDFInfo
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- CN207655078U CN207655078U CN201721245043.1U CN201721245043U CN207655078U CN 207655078 U CN207655078 U CN 207655078U CN 201721245043 U CN201721245043 U CN 201721245043U CN 207655078 U CN207655078 U CN 207655078U
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Abstract
The utility model discloses a kind of pressure type lime milk concentration online detection and control systems that sugar refinery uses, the system includes sampler, pressure sensor, temperature sensor, controlling of sampling valve, purge control valve, blowdown control valve, lime blending bin, water storage tank, highly concentrated lime case, add water control valve, add ash control valve and controller, online automatic detection is carried out by the concentration to sugar refinery milk of lime, and lime milk concentration is controlled, stable lime milk concentration is conducive to neutralize the stability of stove drying workshop section, improve the effect of settling of juice, reduce heating incrustation, improve heat utilization rate, to improve product quality, simultaneously, also have great importance to energy-saving and emission-reduction.
Description
Technical field
The utility model is related to refine sugar and field of intelligent control technology, especially a kind of pressure type milk of lime that sugar refinery uses
Concentration online detection and control system.
Background technology
With the continuous improvement of living standards of the people, requirement of the consumer to food quality, food security is higher and higher, people
Higher standard also proposed to the quality of white granulated sugar.The feedstock processing process in sugar refinery is most passed through afterwards since milling shop
It is completed after crossing the multiple process processing in system refining workshop." sulfurous method " clarify production process due to its complexity, and with it is non-linear,
The characteristics such as time lag, and control pre- grey pH value due to mostly using manual operation greatly, in the actual production process due to cycle chemistry
Reaction needs the regular hour, the lag for causing PH to change, therefore, it is difficult to accurately control pre- grey pH value, in addition various auxiliary materials make
With being difficult to accurately change usage amount with operating mode so that juice pH value is unstable or range beyond requirement.
Milk of lime, chemical formula Ca (OH) 2 are commonly called as white lime, limewash or calcium hydroxide, and white solid is slightly soluble in water, water
Solution is frequently referred to limewash.Milk of lime is usually in calcium oxide plus water generates.Milk of lime is usually in calcium oxide plus water
It generates, because 2 solubility of calcium hydroxide Ca (OH) is not very big, the dissolubility table of the common acid-alkali salt of milk of lime dissolubility is at me
Have in the annex of each of middle school chemistry teaching material, it is collectively referred to as middle school with the periodic table of elements, metal activity series table
Three big tool tables in, it plays prodigious effect for high school chemistry teaching and student's learning chemistry.High three about from
It is pointed out when the essence of son reaction, can the ionic reaction in solution carry out to see whether reaction is conducive to ion concentration reduction,
This is just expanded in junior middle school according to whether generating on the basis of water, gas, precipitation are judged, so ionic reaction can occur
Metathesis reaction type not only have solable matter generate insoluble substance, it is also possible to microsolubility substance generate slightly solubility object
Matter, this should usually consider judging that ion coexists.Lime is that sugar refinery uses most common fining agent.Sulfurous method clarification process
In, milk of lime is added to sugarcane juice and SO2, phosphoric acid form calcium sulfite precipitation and calcium phosphate precipitation to by the glue in syrup
The non-sugar impuritiess such as body, pigment are adsorbed and are removed.Calcium sulfite precipitates the adsorption capacity to colloid pigment with calcium phosphate precipitation, directly
Influence clear decolorizing effect.On the other hand, due to the addition of lime, the content of calcium ion is increased, in subsequent reaction
In, calcium from response situation directly influence and hide the residual quantity of calcium ion in juice, finally influence whether the ash content of product and set
The incrustation situation of standby pipeline.So the fluctuation of lime milk concentration is unfavorable for itself and SO2, phosphoric acid chemical reaction, influence clarification
Effect, to influence the quality of product.
Up to now, detecting and controlling for sugar refinery lime milk concentration is carried out by artificial, manually adjusts lime
Newborn valve opening.And manual operation has by time-lag effect, has experience and judgement height, the conscientious low characteristic of height
Influence, this method there are the problem of be exactly that concentration of lime extremely unstable and concentration of lime shows not intuitive enough, lead to sugar refinery
Operative employee cannot be adjusted technological parameter according to the variation of lime milk concentration in time, and clarification neutralizes workshop section usually can be because of lime
The stability that the influence of fluctuations of newborn concentration is neutralized to stove drying, juice quality will be impacted so that product quality have it is larger
Fluctuation.
Invention content
The purpose of this utility model is to provide a kind of pressure type lime milk concentration online detection and control system, realizes to sugar refinery
Lime milk concentration is detected, and is controlled the lime milk concentration more than setting value, and stable lime milk concentration is conducive to
The stability for neutralizing stove drying workshop section improves the effect of settling of juice, reduces heating incrustation, heat utilization rate is improved, to improve
Product quality, meanwhile, also there is certain meaning to energy-saving and emission-reduction.
The utility model is achieved through the following technical solutions：
A kind of pressure type lime milk concentration online detection and control system, the system include sampler, pressure sensor, temperature
Sensor, controlling of sampling valve, purge control valve, blowdown control valve, lime blending bin, water storage tank, highly concentrated lime case plus water management
Valve plus ash control valve and controller；
Pressure sensor and temperature sensor are installed in sampler；Purge control valve is installed in Cleaning pipes, in blowdown
Blowdown control valve is installed on pipeline；Lime blending bin is connect by controlling of sampling valve with sampler；Water storage tank is by adding water management
Valve is connect with lime blending bin；Highly concentrated lime case is by adding ash control valve to be connect with lime blending bin；
Pressure sensor, temperature sensor and above-mentioned all control valves are connect by controlling cable with controller.
Controller is PLC control system, and presets GPRS wireless telecommunication functions.
Controller automatically switches the sampling water quality of sampled point according to sampled point parameters of detection time, and is joined according to scavenging period
It is several that all the sensors are cleaned automatically.
Controller makes milk of lime according to the lime milk concentration measured by controlling the addition of clear water or highly concentrated lime
Concentration is stablized in the range of setting.
The control system is connect by wireless communication mode with external automated system, and by GPRS wireless networks into
Row remote monitoring and alarm realize that lime milk concentration online detection and control process automation is information-based.
The control mode of the system is：
After system operation, controller automatically opens controlling of sampling valve and is sampled, and after sampler generates overflow, is mounted on
The pressure signal measured is sent to controller by the pressure sensor on sampler, and controller will according to built-in conversion formula
Pressure signal is converted into lime milk concentration, and when lime milk concentration is higher than setting value, controller output signal is opened on water storage tank
Plus water control valve add water to be diluted toward lime blending bin, when lime milk concentration reaches setting value, controller sends out letter
Number close plus water control valve；When lime milk concentration is less than setting value, controller output signal opens adding on highly concentrated lime case
Ash control valve is added highly concentrated lime toward lime blending bin and is reconciled, when lime milk concentration reaches setting value, controller hair
Go out signal-off and adds ash control valve.
Controller be equipped with automatic scavenging period, when purged between then, controller sends out Automatic shutting-down of signal controlling of sampling
Valve opens blowdown control valve, and after the milk of lime in device to be sampled is all discharged, controller sends out signal-off blowdown control
Valve opens purge control valve, is cleaned toward sampler injected clear water, and cleaning finishes, and controller sends out signal-off cleaning control
Valve processed opens simultaneously blowdown control valve by after the raffinate in sampler all discharge, closes blowdown control valve, then open sampling control
Valve processed is sampled and is measured to milk of lime again, and during cleaning, system locks lime milk concentration data, avoids
Control is caused to be fluctuated due to causing the variation of data when cleaning.
The utility model has the advantages that：
1, realize to the online automatic detection of sugar refinery lime milk concentration, and to the lime milk concentration beyond range of set value into
Row automatically controls, and lime milk concentration is made to stablize in certain range, and stable lime milk concentration is conducive to neutralize stove drying workshop section
Stability improves the effect of settling of juice, reduces heating incrustation, improves heat utilization rate, to improve product quality, together
When, also there is certain meaning to energy-saving and emission-reduction；
2, system has automatic cleaning function, does that incrustation ability is strong, adapts to the production requirement of industry spot completely, and
Good accuracy can be kept under rugged environment；System man-machine interface is friendly, and simple and clear, easy to operate, maintenance is few, no
Consume sample.
3, this system is at low cost, and consumptive material is few, and produce effects height, if the sugar manufacturing industry in China is promoted the use of, it will gives entire row
Industry brings huge economic and energy saving emission reduction benefit.
Description of the drawings
Fig. 1 is a kind of pressure type lime milk concentration online detection and control system structural schematic diagram of the utility model；
Wherein, figure label and entitled：Including sampler 1, pressure sensor 2, temperature sensor 3, controlling of sampling valve
4, purge control valve 5, blowdown control valve 6, lime blending bin 7, water storage tank 8, highly concentrated lime case 9, add water control valve 10, add grey control
Valve 11 and controller 12 processed.
Specific implementation mode
The utility model is described further below in conjunction with the accompanying drawings.
A kind of pressure type lime milk concentration online detection and control system, the system include sampler, pressure sensor, temperature
Sensor, controlling of sampling valve, purge control valve, blowdown control valve, lime blending bin, water storage tank, highly concentrated lime case, add water management
Valve adds ash control valve and controller.Pressure sensor and temperature sensor are installed in sampler；Cleaning is installed in Cleaning pipes
Control valve installs blowdown control valve on blow-off line；Lime blending bin is connect by controlling of sampling valve with sampler；Water storage tank
By adding water control valve to be connect with lime blending bin；Highly concentrated lime case is by adding ash control valve to be connect with lime blending bin；
Above-mentioned is connect by controlling cable with controller in line pressure sensor, temperature sensor and control valve.
The controller is PLC control system, and presets communication function.
The control mode of system is：
（1）After system comes into operation, automatically opens controlling of sampling valve and sampled, after sampler generates overflow, installation
The pressure signal measured is sent to PLC controller in line pressure sensor on sampler, controller is according to conversion formula
Pressure signal is converted into lime milk concentration, when lime milk concentration is higher than setting value, PLC controller output signal opens water storage
On case plus water control valve adds water to be diluted toward lime blending bin, when lime milk concentration reaches setting value, PLC controller
It sends out signal-off and adds water control valve；When lime milk concentration is less than setting value, PLC controller output signal opens highly concentrated lime
On case plus ash control valve is added highly concentrated lime toward lime blending bin and is reconciled, when lime milk concentration reaches setting value,
PLC controller sends out signal-off and adds ash control valve.
（2）System be equipped with automatic scavenging period, when purged between then, PLC controller send out Automatic shutting-down of signal sampling
Control valve opens blowdown control valve, and after the milk of lime in sampler is all discharged, PLC controller sends out signal-off
Blowdown control valve opens purge control valve, is cleaned toward sampler injected clear water, cleaning finishes, and PLC controller sends out signal
Purge control valve is closed, blowdown control valve is opened simultaneously by after the raffinate in sampler all discharge, closes blowdown control valve, then
Controlling of sampling valve is opened, milk of lime is sampled and measured again, during cleaning, system carries out lime milk concentration data
Locking avoids causing control to be fluctuated due to causing the variation of data when cleaning.
The controller substitutes into formula scales at lime milk concentration, by controlling clear water or height according to the pressure measured
The addition of dense lime makes lime milk concentration stablize in the range of setting.
This control system can be connect by communication modes with the automated information system of full factory or even group, realize sugar
Factory's whole process automated information.
Claims (5)
1. a kind of pressure type lime milk concentration online detection and control system, which is characterized in that the system includes sampler（1）, pressure
Force snesor（2）, temperature sensor（3）, controlling of sampling valve（4）, purge control valve（5）, blowdown control valve（6）, lime mixing
Case（7）, water storage tank（8）, highly concentrated lime case（9）Plus water control valve（10）Plus ash control valve（11）And controller（12）；
In sampler（1）Pressure sensor is installed（2）And temperature sensor（3）；Purge control valve is installed in Cleaning pipes
（5）, blowdown control valve is installed on blow-off line（6）；Lime blending bin（7）Pass through controlling of sampling valve（4）With sampler（1）Even
It connects；Water storage tank（8）By adding water control valve（10）With lime blending bin（7）Connection；Highly concentrated lime case（9）By adding ash control valve
（6）With lime blending bin（7）Connection；
The pressure sensor（2）, temperature sensor（3）With above-mentioned all control valves by controlling cable and controller
（12）Connection.
2. pressure type lime milk concentration online detection and control system according to claim 1, which is characterized in that the controller
（12）For PLC control system, and preset GPRS wireless telecommunication functions.
3. pressure type lime milk concentration online detection and control system according to claim 1, which is characterized in that the controller
（12）Automatically switch the sampling water quality of sampled point according to sampled point parameters of detection time, and according to scavenging period parameter to all biographies
Sensor is cleaned automatically.
4. pressure type lime milk concentration online detection and control system according to claim 1, which is characterized in that the controller
（12）Lime milk concentration is set to stablize by controlling the addition of clear water or highly concentrated lime according to the lime milk concentration measured
In the range of setting.
5. pressure type lime milk concentration online detection and control system according to claim 1, which is characterized in that the control system
It is connect with external automated system by wireless communication mode, and remote monitoring and alarm is carried out by GPRS wireless networks,
Realize that lime milk concentration online detection and control process automation is information-based.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201721245043.1U CN207655078U (en) | 2017-09-27 | 2017-09-27 | Pressure type lime milk concentration online detection and control system |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721245043.1U CN207655078U (en) | 2017-09-27 | 2017-09-27 | Pressure type lime milk concentration online detection and control system |
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| Publication Number | Publication Date |
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| CN207655078U true CN207655078U (en) | 2018-07-27 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108057392A (en) * | 2017-09-27 | 2018-05-22 | 钦州市创华工控设备有限公司 | Pressure type lime milk concentration online detection and control system |
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2017
- 2017-09-27 CN CN201721245043.1U patent/CN207655078U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108057392A (en) * | 2017-09-27 | 2018-05-22 | 钦州市创华工控设备有限公司 | Pressure type lime milk concentration online detection and control system |
| CN108057392B (en) * | 2017-09-27 | 2024-08-09 | 钦州市创华工控设备有限公司 | Pressure type lime milk concentration on-line detection control system |
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