CN118112999A - Joint debugging and joint control method and device of desulfurization system, storage medium and electronic equipment - Google Patents
Joint debugging and joint control method and device of desulfurization system, storage medium and electronic equipment Download PDFInfo
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- 238000006477 desulfuration reaction Methods 0.000 title claims abstract description 238
- 230000023556 desulfurization Effects 0.000 title claims abstract description 238
- 238000000034 method Methods 0.000 title claims abstract description 48
- 239000010440 gypsum Substances 0.000 claims abstract description 266
- 229910052602 gypsum Inorganic materials 0.000 claims abstract description 266
- 239000002002 slurry Substances 0.000 claims abstract description 202
- 238000004065 wastewater treatment Methods 0.000 claims abstract description 63
- 230000018044 dehydration Effects 0.000 claims abstract description 25
- 238000006297 dehydration reaction Methods 0.000 claims abstract description 25
- 230000033228 biological regulation Effects 0.000 claims abstract description 24
- 239000007788 liquid Substances 0.000 claims description 94
- VEXZGXHMUGYJMC-UHFFFAOYSA-M Chloride anion Chemical compound [Cl-] VEXZGXHMUGYJMC-UHFFFAOYSA-M 0.000 claims description 85
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 58
- 238000011144 upstream manufacturing Methods 0.000 claims description 47
- 230000001105 regulatory effect Effects 0.000 claims description 34
- 230000001276 controlling effect Effects 0.000 claims description 31
- 230000001502 supplementing effect Effects 0.000 claims description 21
- 238000004590 computer program Methods 0.000 claims description 12
- 239000002351 wastewater Substances 0.000 description 46
- 230000003009 desulfurizing effect Effects 0.000 description 18
- 239000000706 filtrate Substances 0.000 description 13
- RAHZWNYVWXNFOC-UHFFFAOYSA-N Sulphur dioxide Chemical compound O=S=O RAHZWNYVWXNFOC-UHFFFAOYSA-N 0.000 description 12
- 230000007547 defect Effects 0.000 description 12
- 238000004891 communication Methods 0.000 description 7
- 230000008569 process Effects 0.000 description 7
- 235000019738 Limestone Nutrition 0.000 description 5
- 238000004364 calculation method Methods 0.000 description 5
- 238000010586 diagram Methods 0.000 description 5
- 239000006028 limestone Substances 0.000 description 5
- 238000007599 discharging Methods 0.000 description 4
- 239000000463 material Substances 0.000 description 4
- 150000003839 salts Chemical class 0.000 description 4
- 230000005236 sound signal Effects 0.000 description 4
- 238000010521 absorption reaction Methods 0.000 description 3
- 238000006243 chemical reaction Methods 0.000 description 3
- 230000007423 decrease Effects 0.000 description 3
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- 230000008859 change Effects 0.000 description 2
- 239000000428 dust Substances 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 230000007613 environmental effect Effects 0.000 description 2
- 238000001704 evaporation Methods 0.000 description 2
- 230000008020 evaporation Effects 0.000 description 2
- 238000011010 flushing procedure Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000003647 oxidation Effects 0.000 description 2
- 238000007254 oxidation reaction Methods 0.000 description 2
- 238000012545 processing Methods 0.000 description 2
- 230000003068 static effect Effects 0.000 description 2
- KLDZYURQCUYZBL-UHFFFAOYSA-N 2-[3-[(2-hydroxyphenyl)methylideneamino]propyliminomethyl]phenol Chemical compound OC1=CC=CC=C1C=NCCCN=CC1=CC=CC=C1O KLDZYURQCUYZBL-UHFFFAOYSA-N 0.000 description 1
- NINIDFKCEFEMDL-UHFFFAOYSA-N Sulfur Chemical compound [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 description 1
- 230000004913 activation Effects 0.000 description 1
- 230000002411 adverse Effects 0.000 description 1
- 238000013475 authorization Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000000460 chlorine Substances 0.000 description 1
- 229910052801 chlorine Inorganic materials 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- 239000000470 constituent Substances 0.000 description 1
- 238000011217 control strategy Methods 0.000 description 1
- 238000012937 correction Methods 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 201000001098 delayed sleep phase syndrome Diseases 0.000 description 1
- 208000033921 delayed sleep phase type circadian rhythm sleep disease Diseases 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000004090 dissolution Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000003344 environmental pollutant Substances 0.000 description 1
- 238000005189 flocculation Methods 0.000 description 1
- 230000016615 flocculation Effects 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 230000003287 optical effect Effects 0.000 description 1
- 231100000719 pollutant Toxicity 0.000 description 1
- 238000004062 sedimentation Methods 0.000 description 1
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- 239000011593 sulfur Substances 0.000 description 1
- 229910052717 sulfur Inorganic materials 0.000 description 1
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Classifications
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P90/00—Enabling technologies with a potential contribution to greenhouse gas [GHG] emissions mitigation
- Y02P90/02—Total factory control, e.g. smart factories, flexible manufacturing systems [FMS] or integrated manufacturing systems [IMS]
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Abstract
The disclosure relates to a joint debugging joint control method and device of a desulfurization system, a storage medium and electronic equipment, and relates to the technical field of desulfurization control. The method for joint adjustment and joint control of a desulfurization system comprises the steps of: determining regulation and control parameters of the desulfurization system; and adjusting the gypsum slurry discharge amount in the gypsum discharge system, the dehydration system and the desulfurization wastewater treatment system according to the regulation parameters so as to maintain the overall gypsum slurry discharge amount of the desulfurization system in an equilibrium state in unit time.
Description
Technical Field
The disclosure relates to the technical field of desulfurization control, in particular to a joint debugging joint control method and device of a desulfurization system, a storage medium and electronic equipment.
Background
In the prior art, desulfurization systems are designed to be operated in a discontinuous mode (discontinuous operation) for the purpose of energy saving and to exhibit the device performance of three systems. Namely, when the density of gypsum slurry and the concentration of chloride ions reach certain conditions, the desulfurization system is started at one time and keeps running at maximum output. And stopping the system after the density and the chloride ion concentration of the gypsum slurry are reduced, and starting the system again after the density and the chloride ion concentration of the slurry are enriched. The consequences of the severity of the operating environment and the failure of equipment defects in the systems are not fully considered.
Disclosure of Invention
In order to solve the technical problems, the disclosure provides a joint debugging joint control method and device of a desulfurization system, a storage medium and electronic equipment.
To achieve the above object, in a first aspect, the present disclosure provides a joint control method of a desulfurization system, an upstream of the desulfurization system is a gypsum discharge system, a midstream of the desulfurization system is a dewatering system, and a downstream of the desulfurization system is a desulfurization wastewater treatment system, the method comprising:
determining regulation and control parameters of the desulfurization system;
And adjusting the gypsum slurry discharge amount in the gypsum discharge system, the dehydration system and the desulfurization wastewater treatment system according to the regulation parameters so as to maintain the overall gypsum slurry discharge amount of the desulfurization system in an equilibrium state in unit time.
Optionally, the regulatory parameter comprises a compensation amount of gypsum slurry discharge;
The adjusting of the gypsum slurry discharge in the gypsum discharge system, the dewatering system and the desulfurization wastewater treatment system according to the adjustment parameters comprises:
adjusting the gypsum slurry discharge amount of the system to be the current gypsum slurry discharge amount minus the offset amount in the case where the system is a high load with respect to the gypsum discharge system, the dewatering system, and the desulfurization wastewater treatment system;
When the system is at a low load, the gypsum slurry discharge of the system is adjusted to the current gypsum slurry discharge plus the offset.
Optionally, determining the regulation parameters of the desulfurization system includes:
Determining the average load of the desulfurization system in all days according to the scheduling curve of the desulfurization system;
Respectively determining a first gypsum slurry discharge amount corresponding to the average load and a second gypsum slurry discharge amount corresponding to the real-time load of the desulfurization system;
And calculating a difference between the second gypsum slurry discharge and the first gypsum slurry discharge as a compensation amount for the gypsum slurry discharge.
Optionally, the regulation parameters comprise liquid level values in a box body of the gypsum discharge system, the dehydration system and the desulfurization wastewater treatment system;
The adjusting of the gypsum slurry discharge in the gypsum discharge system, the dewatering system and the desulfurization wastewater treatment system according to the adjustment parameters comprises:
controlling valve ports of water supplementing valves of other boxes upstream of the boxes in the desulfurization system to be opened to adjust the increase of gypsum slurry discharge amount of the other boxes upstream of the boxes under the condition that the liquid level value in the boxes is lower than the liquid level lower limit value for the boxes in the gypsum discharge system, the dehydration system and the desulfurization wastewater treatment system;
and under the condition that the liquid level in the box body is higher than the liquid level upper limit value, controlling valve ports of water supplementing valves of other box bodies upstream of the box body in the desulfurization system to be reduced or closed so as to adjust the gypsum slurry discharge amount of the other box bodies upstream of the box body to be reduced.
Optionally, the control parameters include chloride ion concentration of slurry or solution in a tank of the gypsum discharge system, the dewatering system, and the desulfurization wastewater treatment system;
The adjusting of the gypsum slurry discharge in the gypsum discharge system, the dewatering system and the desulfurization wastewater treatment system according to the adjustment parameters comprises:
Controlling the valve ports of water replenishing valves of other tanks upstream of the tank in the desulfurization system to be opened to adjust the increase of gypsum slurry discharge amount of the other tanks upstream of the tank when the chloride ion concentration of slurry or solution in the tank is higher than the chloride ion concentration upper limit value for the tanks in the gypsum discharge system, the dehydration system and the desulfurization wastewater treatment system;
And under the condition that the chloride ion concentration of the slurry or solution in the box body is lower than the lower limit value of the chloride ion concentration, controlling the valve ports of water supplementing valves of other box bodies upstream of the box body in the desulfurization system to be reduced or closed so as to adjust the gypsum slurry discharge amount of the other box bodies upstream of the box body to be reduced.
Optionally, the method further comprises:
determining a gypsum slurry density of a desulfurization tower in said gypsum discharge system;
And determining a target operation mode according to the gypsum slurry density, and controlling the gypsum discharge system to execute the target operation mode so as to drive the dewatering system and the desulfurization wastewater treatment system to operate, wherein the target operation mode comprises one of a high-density operation mode, a medium-density operation mode and a low-density operation mode.
Optionally, the determining a target operating mode according to the gypsum slurry density includes:
Determining a high density mode as a target operating mode if the gypsum slurry density is in a first density interval; or alternatively
Determining a medium density mode as a target operating mode when the gypsum slurry density is in a second density interval; or alternatively
And determining a low-density mode as a target operation mode when the gypsum slurry density is in a third density interval, wherein the lower limit value of the first density interval is greater than the upper limit value of the second density interval, and the lower limit value of the second density interval is greater than the upper limit value of the third density interval.
In a second aspect, the present disclosure provides a joint debugging joint control device of a desulfurization system, an upstream of the desulfurization system is a gypsum discharge system, a midstream of the desulfurization system is a dehydration system, a downstream of the desulfurization system is a desulfurization wastewater treatment system, the device comprising:
A determination module configured to determine a regulatory parameter of the desulfurization system;
a control module configured to adjust the gypsum slurry discharge in the gypsum discharge system, the dewatering system, and the desulfurization wastewater treatment system according to the regulation parameters so that the overall gypsum slurry discharge of the desulfurization system maintains an equilibrium state for a unit time.
In a third aspect, the present disclosure provides a non-transitory computer readable storage medium having stored thereon a computer program which, when executed by a processor, implements the steps of a joint debugging method of the desulfurization system.
In a fourth aspect, the present disclosure provides an electronic device comprising:
a memory having a computer program stored thereon;
And the processor is used for executing the computer program in the memory to realize the steps of the joint debugging joint control method of the desulfurization system.
Through above-mentioned technical scheme, this disclosure possesses following beneficial effect at least:
And adjusting the discharge amount of the gypsum slurry in the gypsum discharge system, the dehydration system and the desulfurization wastewater treatment system according to the regulation and control parameters of the desulfurization system so as to ensure that the total discharge amount of the gypsum slurry of the desulfurization system is in a position balance state in unit time. The gypsum discharge system, the dehydration system and the desulfurization wastewater treatment system are driven to stably operate through the upward and downward opening of the gypsum slurry discharge amount, and the gypsum discharge system, the dehydration system and the desulfurization wastewater treatment system are adjusted to be in a continuous operation mode, so that the problem of reduced equipment reliability in each system caused by frequent start and stop of the system is avoided.
Additional features and advantages of the present disclosure will be set forth in the detailed description which follows.
Drawings
The accompanying drawings are included to provide a further understanding of the disclosure, and are incorporated in and constitute a part of this specification, illustrate the disclosure and together with the description serve to explain, but do not limit the disclosure. In the drawings:
Fig. 1 is a schematic diagram showing the composition of a conventional desulfurization system.
Fig. 2 is a flowchart illustrating a joint debugging joint control method of a desulfurization system according to an exemplary embodiment of the present disclosure.
Fig. 3 is a logic sequence diagram of joint debugging joint control shown according to an exemplary embodiment of the present disclosure.
Fig. 4 is a flow chart illustrating mode selection according to an exemplary embodiment of the present disclosure.
Fig. 5 is a graph illustrating a regulation graph according to an exemplary embodiment of the present disclosure.
Fig. 6 is another flow chart illustrating a joint control method of a desulfurization system according to an exemplary embodiment of the present disclosure.
Fig. 7 is a block diagram of a joint control apparatus of a desulfurization system according to an exemplary embodiment of the present disclosure.
Fig. 8 is a block diagram of an electronic device, shown in accordance with an exemplary embodiment of the present disclosure.
Detailed Description
Specific embodiments of the present disclosure are described in detail below with reference to the accompanying drawings. It should be understood that the detailed description and specific examples, while indicating and illustrating the disclosure, are not intended to limit the disclosure.
It should be noted that, all actions for acquiring signals, information or data in the present disclosure are performed under the condition of conforming to the corresponding data protection rule policy of the country of the location and obtaining the authorization given by the owner of the corresponding device.
As the background technology is adopted, the desulfurization tower in the desulfurization system works at the maximum flow, and the desulfurization system stops working when the concentration of chloride ions is too low, the concentration of gypsum is too low or the liquid level is too low; when the concentration of chloride ions exceeds the limit, the gypsum density reaches the standard or the liquid level is too high, the desulfurization system is started. Frequent start-stop causes defects of all parts of the rotating equipment, influences the safety and reliability of the equipment, and causes defects and faults of the equipment due to severe operating conditions of the operating environment. And poor device reliability can cause the system to cycle through to a crash of the operating system. A large number of engineering practices prove that the defects of a gypsum discharge system, a dehydration system and a desulfurization wastewater treatment system of the desulfurization system after 3-5 years of operation are more than 70% -80% of the total desulfurization system, and the existing desulfurization system is not fully considered with the results caused by the severe operating environment and the defect faults of the equipment.
It should be noted that, referring to fig. 1, the desulfurization system includes a gypsum discharge system 100, a dewatering system 200, and a desulfurization wastewater treatment system 300 (hereinafter, referred to as three systems), which respectively regulate and control: the reaction density of the desulfurization gypsum, the liquid level of the desulfurization tower and the enrichment degree of chloride ions in a desulfurization system. The three systems are mutually independent and related, and are important constituent guarantees for normal operation of the desulfurization system.
The gypsum discharge system 100 is composed of a desulfurizing tower 01, a gypsum discharge pump 02, a gypsum discharge control valve 03, and a gypsum cyclone station 04.
The dewatering system 200 is composed of a gypsum dewatering machine 05, a gypsum silo 06, a gypsum transport vehicle 07, a filtrate tank 08, a filtrate swirl pump 09, a filtrate swirl control valve 10, a wastewater swirl station 11, a wastewater tank 12, a first wastewater discharge pump 13, and a wastewater discharge control valve 14.
The desulfurization wastewater treatment system 300 is composed of a wastewater collection tank 15, a second wastewater discharge pump 16, a first wastewater regulating valve 17, an electronic flocculation generator 18, a pretreatment water tank 19, a third wastewater discharge pump 20, a wastewater second water regulating valve 21, a decrement concentration device 22, a decrement concentration water tank 23, a fourth wastewater discharge pump 24, a third wastewater regulating valve 25, an evaporation crystallizer 26, a fourth wastewater regulating valve 27, a wet slag conveyor 28, a fifth wastewater regulating valve 29, a flue bypass evaporation tower 30, and a desulfurization wastewater zero-discharge attachment 31.
In view of this, the present disclosure changes three systems into continuous operation mode to solve the problem of reduced equipment reliability caused by frequent start-stop of equipment in the desulfurization system, aiming at the shortcomings of the existing desulfurization systems. If all variable factors are considered, the three-system logic control model becomes very complex, the dynamic calculation data size is large, the DCS (Distributed Control System ) control system has unstable calculation force, and the joint adjustment and control program design is not easy. Therefore, the method and the device preferably take a single variable parameter (namely gypsum slurry discharge flow) as a core center from multiple variables, and adopt important regulation and control parameters to compare, judge, calculate and the like with the gypsum slurry discharge, so as to generate corresponding control instructions, thereby ensuring the stable regulation and control of the three systems and the economic and environmental protection operation.
The present disclosure provides a joint adjustment joint control method of a desulfurization system, wherein an upstream of the desulfurization system is a gypsum discharge system as shown in fig. 1, a midstream of the desulfurization system is a dehydration system, and a downstream of the desulfurization system is a desulfurization wastewater treatment system, and as shown in fig. 2, the joint adjustment joint control method of the desulfurization system may include:
in step S11, the control parameters of the desulfurization system are determined.
It should be understood that the regulatory parameters may include parameters that affect the discharge of gypsum slurry, such as gypsum slurry density, chloride ion concentration, liquid level in each of the tanks in the three-system, and the like. As shown in fig. 1, the tanks in the three systems may include a desulfurizing tower 01, a filtrate tank 08, a waste water tank 12, a waste water collecting tank 15, a pretreatment water tank 19, a decrement concentration water tank 23, and the like.
It is noted that there is a density deviation between the measured value of the gypsum slurry density and the count value of the gypsum slurry density, when the density deviation is < 20% (and the two parameter deviation is < 15mg/Nm 3), based on the density measured value. The density deviation is more than 20% (and the deviation of two parameters is less than 25mg/Nm 3), and the small value between the measured value and the count value is taken for control. The density deviation was > 20% (and the two parameters were > 25mg/Nm 3), based on the calculated values. When the density deviation is more than 20%, the density is manually tested (and the instrument is calibrated, and the gypsum density is input by an open interface for control).
It should be appreciated that for gypsum slurry densities, if the gypsum slurry density is too high, the limestone slurry dissolution efficiency decreases, the reaction rate with sulfur dioxide decreases, the desulfurization efficiency decreases, the pollutant emission concentration increases, resulting in a significant increase in the desulfurization system scaling and equipment wear rate. If the gypsum slurry liquid density is too low, the sulfur dioxide absorbing capacity is insufficient, the desulfurization efficiency is reduced, and environmental protection emission indexes are affected. The gypsum slurry density may be controlled to 1130Kg/m 3-1140Kg/m3 in embodiments of the present disclosure.
It is worth to say that, if the liquid level of any box body in the desulfurization system is too high, overflow is easy to occur, so that the environment is polluted; the liquid level of each box body is too low, so that cavitation is easily generated in the slurry pump, and the safe and stable operation of the slurry pump is endangered. If the liquid level of the desulfurizing tower 01 is too high, overflow is easy to occur to pollute the environment; too low a liquid level can easily cause cavitation of the slurry pump, and the safe and stable operation of the slurry pump is endangered. The liquid level capacity of each box in the desulfurization system can be controlled according to the capacity of each box. In general, it is preferable to control the liquid level of each tank to 9m to 11 m.
It should be appreciated that if the chloride ion concentration in the desulfurization system is too high, the reaction process of the limestone slurry with sulfur dioxide is easily destroyed and the corrosion rate of the equipment is increased. In the embodiment of the disclosure, the concentration of chloride ions can be controlled to 10000PPm-15000PPm.
In step S12, the gypsum slurry discharge amounts in the gypsum discharge system, the dewatering system, and the desulfurization waste water treatment system are adjusted according to the regulation parameters so that the overall gypsum slurry discharge amount of the desulfurization system is maintained in an equilibrium state for a unit time.
It is worth noting that the gypsum slurry discharge directly determines the liquid level and chloride ion concentration of the various tanks of the downstream system. Thus, embodiments of the present disclosure provide for the upward and downward flow of gypsum slurry discharge to drive the upstream and downstream systems to various balances of materials, heat, water and salt levels.
It is worth to say that, in the joint debugging and joint control process of the desulfurization system, an alarm value and a linkage value can be preset, so that the alarm and the linkage control in the joint debugging and joint control process of the desulfurization system are realized.
For example, the gypsum slurry density may have a high alarm value of 1180Kg/m3 and a low alarm value of 1050Kg/m3. The gypsum slurry density was less than 1080Kg/m3 to initiate locking.
The high alarm value of the liquid level of the desulfurizing tower can be 12m (the strong closing of the water supplementing valve and the locking of the desulfurizing tower are opened), and the normal liquid level of the desulfurizing tower can be 9-10 m. The high alarm value of the liquid level of the filtrate tank can be 5m (strongly closed water supplementing valve), and the liquid level of the filtrate tank can be maintained to be 3-3.5 m normally. The high alarm of the concentration of the chloridion in the desulfurizing tower can be 20000PPm, and the concentration of the chloridion in the desulfurizing tower can be maintained to be 10000 PPm-15000 PPm normally. The concentration of chloride ions in the desulfurizing tower is 25000PPm, and a request for strongly starting a gypsum discharge pump is sent out so that the gypsum discharge amount can be operated according to the maximum output.
The high alarm value of the liquid level of the waste water tank can be 5m (strongly closing the water supplementing valve), and the liquid level of the waste water tank can be maintained to be 3-3.5 m normally. The high alarm value of the liquid level of the wastewater collection tank can be 4m, the low alarm value can be 1.2m, and the liquid level of the wastewater collection tank can be maintained at 3m normally.
The high alarm value of the liquid level of the pretreatment water tank can be 4m, the low alarm value can be 1.2m, and the liquid level of the pretreatment water tank can be maintained to be 3m normally.
The liquid level of the decrement concentration water tank can be 3.5m, the liquid level of the decrement concentration water tank can be 1m, and the liquid level of the decrement concentration water tank can be maintained to be 2.5m.
In the embodiment of the disclosure, the gypsum slurry discharge amount (single-side amount) is used as a control core of the three-system, and the gypsum slurry discharge amount in the three-system is regulated by regulating parameters, so that a logic control program becomes simple, practical and efficient. Compared with the traditional control mode, the gypsum slurry discharge amount cannot adopt the control mode of high density, large flow and high discharge, and a peak staggering discharge mode (namely high load, low load and multiple rows, and balance of gypsum slurry density in unit time) is needed to be adopted, so that the balance relation among three systems is effectively maintained, defects generated by rotating parts of equipment in a desulfurization system caused by frequent start and stop of the desulfurization system are avoided, the safety and reliability of the equipment are influenced, the problem that the equipment is unreliable due to frequent start and stop of the system is solved, the equipment defects and failure rate are reduced, and the automatic regulation and control capability and the safe, economic and environment-friendly operation level of the desulfurization system are improved.
In order to facilitate a better understanding of the co-modulation and co-control method of the desulfurization system provided by the present disclosure, the relevant steps involved in the method are illustrated in detail below.
In an implementation manner, the joint control method of the desulfurization system may further include:
Determining the gypsum slurry density of the desulfurizing tower in the gypsum discharge system;
A target operation mode is determined according to the density of the gypsum slurry, and the gypsum discharge system is controlled to execute the target operation mode, thereby driving the dewatering system and the desulfurization wastewater treatment system to operate, wherein the target operation mode comprises one of a high-density operation mode, a medium-density operation mode and a low-density operation mode.
It should be appreciated that when the three systems are continuously and stably operated, the gypsum slurry density is approximately equivalent to the linear trend of chloride ion concentration enrichment, so that the chloride ion concentration can be indirectly controlled by controlling the gypsum slurry density. The joint debugging and joint control of the desulfurization system is divided into three states, namely a starting state, a stopping state and a normal running state. Wherein the start state and the stop state belong to special working conditions and need to be considered independently. In order to ensure continuous and stable operation of the three systems, key elements such as material balance, energy balance, water balance, salt balance and the like of the whole system must be considered.
It should be noted that, as shown in fig. 3, the gypsum slurry density is affected by factors such as the unit load, the SO2 absorption level, the limestone supply, and the dust of the dust remover, which are important factors in determining the system start-up, stop, and normal adjustment. Determining a target operation mode of the desulfurization system according to the density of the gypsum slurry, and controlling the desulfurization system to execute the target operation mode; the desulfurization system is subjected to joint adjustment and joint control according to the discharge amount of gypsum slurry, the liquid level in each box body and the chloride ion concentration in the three systems in the sequence of the gypsum discharge system, the dehydration system and the desulfurization wastewater treatment system, so that various materials, heat, water and salt in the desulfurization system are balanced.
It is worth noting that it is possible to determine whether to activate the gypsum discharge system based on the gypsum slurry density and chloride ion concentration. If the density of the gypsum slurry is greater than the density start threshold and the chloride ion concentration is greater than the concentration start threshold, the gypsum discharge system is started. It is also possible to determine whether to start the gypsum discharge system based on the gypsum slurry density without an on-line chloride ion or chloride ion concentration value in the desulfurization system. If the gypsum density is greater than the density activation threshold, the gypsum discharge system is activated. The density starting threshold and the concentration starting threshold can be preset according to the actual running state of the desulfurization system, the density starting threshold can be 1080Kg/m 3 in the method, and the concentration starting threshold can be 5000ppm.
Wherein, the deviation value exists in the judging process of the gypsum slurry density, the deviation value can be delta +/-20 mg/Nm 3, and the measured value is specifically used as the reference; if the deviation value is exceeded, the calculated value is used as the reference. The gypsum slurry density can be calculated from the relevant factors. And taking the calculated value/the test value of the chloride ion concentration as a correction coefficient to participate in the regulation and control of the desulfurization system.
As an example, as shown in fig. 4, the gypsum slurry density and chloride ion concentration in the desulfurizing tower are obtained; judging that the density of the gypsum slurry is more than 1080Kg/m 3 and the chloride ion concentration is more than 5000ppm. If yes, starting a gypsum discharge system; if not, locking is started.
It is worth to say that, when desulfurization waste water treatment system trouble is shut down, need fully consider chloride ion enrichment trend change, correct the compensation to chloride ion concentration. The influence of the desulfurizing tower liquid level on the gypsum slurry discharge amount (the desulfurizing tower liquid level is controlled by the desulfurizing tower flushing and spraying program balance) is not considered. Only the effect of gypsum slurry discharge on the fluid of each tank of the wastewater treatment system is considered. When the joint adjustment and joint control are carried out according to the liquid level, control requests (except for a protection tripping value) for increasing or decreasing the water inflow are sent to an upstream system step by step from the tail end of the wastewater advanced treatment system.
It is worth to say that the desulfurization is started after the maintenance of the unit, and the gypsum density is more than 1130mg/Nm3. At the initial start-up (which may be within 4 hours), control is still in the low density mode. After 4 hours, the system automatically switches to a high density mode of operation. If the concentration of chloride ions is more than 20000ppm during the desulfurization start-up, the desulfurization waste water treatment system can be operated in a mode of maximum output according to the maximum slurry discharge amount at the initial stage of the start-up. Until the chloride ion concentration was reduced to 5000ppm and below, the system was automatically switched to high density mode of operation (within 4 hours).
It is worth noting that the desulfurization system is allowed to be stopped when the desulfurization system cannot normally operate or the safety of personal equipment is endangered. For example, the density of the desulfurization tower is reduced to 1060mg/Nm 3, and the desulfurization tower runs for a long time under low load (more than 8 hours), so that the gypsum discharging system and the dehydration system can be controlled to stop running, and the desulfurization wastewater treatment system can be controlled to stop running after wastewater treatment is finished. The ultra-low limit alarm of the liquid level of the absorption tower is (leakage of the body, etc.), and can control the operation of the gypsum discharging system and the dehydration system, and control the desulfurization wastewater treatment system to stop after the wastewater treatment is finished.
In one achievable embodiment, determining a target operating mode based on the gypsum slurry density may include:
Determining a high density mode as a target operating mode when the gypsum slurry density is in a first density interval; or alternatively
Determining the medium density mode as a target operation mode under the condition that the gypsum slurry density is in a second density interval; or alternatively
And determining the low-density mode as a target operation mode when the gypsum slurry density is in a third density interval, wherein the lower limit value of the first density interval is larger than the upper limit value of the second density interval, and the lower limit value of the second density interval is larger than the upper limit value of the third density interval.
Wherein, the gypsum discharge amounts corresponding to the first density section, the second density section, the third density section and the respective sections can be seen in table 1.
TABLE 1
It should be noted that the high-density operation mode, the medium-density operation mode, and the low-density operation mode can be determined according to the density range of the on-line measurement of the desulfurization slurry (i.e., the discharge amount of the small slurry is controlled).
Wherein, in a high-density operation mode, the density of the gypsum slurry is automatically regulated and controlled according to 1150Kg/m 3; in the medium density operation mode, automatically regulating and controlling according to 1125Kg/m3 of gypsum slurry density; in the low-density operation mode, the density of the gypsum slurry is automatically regulated and controlled according to 1100Kg/m 3. To ensure that no sedimentation occurs in the slurry pipeline, the minimum flow is not less than 30m3/h.
As an example, referring to fig. 4, after the gypsum discharge system is started, the gypsum slurry density in the desulfurizing tower is obtained; judging a density interval in which the gypsum slurry density is located, wherein the target operation mode is a high-density operation mode when the gypsum slurry density is in the interval (1140-1180 Kg/m 3), the target operation mode is a medium-density operation mode when the gypsum slurry density is in the interval (1110-1140 Kg/m 3), and the target operation mode is a low-density operation mode when the gypsum slurry density is in the interval (1080-1100 Kg/m 3.
It is worth to say that, when the desulfurization system is operating normally, the desulfurization system defaults to a high-density operation mode; under the condition that the chloride ion concentration is more than 20000ppm, automatically switching to a medium-density operation mode; under the conditions that the desulfurization system is started and the density of gypsum slurry in a desulfurization tower in the desulfurization system is less than or equal to 1080Kg/m 3, automatically switching to a low-density operation mode; and under the accident condition of the desulfurization system, the joint debugging joint control is automatically released, and the control is manually performed by an operator.
In one possible embodiment, the regulatory parameters may include an offset to the gypsum slurry discharge;
in step S12, adjusting the gypsum slurry discharge in the gypsum discharge system, the dewatering system, and the desulfurization waste water treatment system according to the adjustment parameters may include:
aiming at a gypsum discharge system, a dehydration system and a desulfurization wastewater treatment system, under the condition that the system is under high load, adjusting the gypsum slurry discharge amount of the system to be the value of subtracting the compensation amount from the current gypsum slurry discharge amount;
When the system is at low load, the gypsum slurry discharge of the system is adjusted to the current gypsum slurry discharge plus the offset.
The delta compensation amount is reduced at high load and increased at low load, and the balance state (no great trend of variation) can be effectively maintained in unit time such as total discharge amount of gypsum slurry, gypsum slurry density, chloride ion concentration, etc.
It should be understood that the desulfurization system can determine the gypsum slurry discharge amount for different loads, different densities, and different sulfur content based on actual operational data. And then, correcting and regulating according to the delta compensation amount discharged by the gypsum slurry with average load, so as to ensure the overall balance of materials, water quantity, salt and the like in unit time.
Illustratively, high load: when the average load or the sulfur dioxide concentration at the inlet of the desulfurization system is increased (i.e. a feedforward signal), the valve opening amplitude of the gypsum discharge control valve is increased, and the opening amplitude of the gypsum discharge control valve can be determined according to a calculation instruction and the linear relation between the valve and the flow. And gradually adjusting and controlling the discharge amount of the gypsum slurry (calculating the discharge amount-delta compensation amount) according to the default control of the gypsum slurry density, the calculation of the delta compensation amount, the flow limit value and the like. Low load: when the average load or the sulfur dioxide concentration at the inlet of the desulfurization system is reduced (i.e. the feedforward signal), the valve opening amplitude of the gypsum discharge control valve is reduced, and the opening amplitude of the gypsum discharge control valve can be determined according to the calculation instruction and the linear relation between the valve and the flow. Then according to the default control gypsum slurry density, calculating delta compensation quantity and flow limit value, etc., gradually regulating and controlling gypsum slurry discharge quantity (calculating discharge quantity + [ delta ] compensation quantity).
In one implementation, determining the regulation parameters of the desulfurization system may include:
determining the average load of the desulfurization system in all days according to the scheduling curve of the desulfurization system;
Respectively determining a first gypsum slurry discharge amount corresponding to the average load and a second gypsum slurry discharge amount corresponding to the real-time load of the desulfurization system;
The difference between the second gypsum slurry discharge and the first gypsum slurry discharge is calculated as a compensation amount for the gypsum slurry discharge.
The method is characterized in that a dispatching curve of the desulfurization system can be a unit dispatching curve issued by a power grid dispatching center, and the DCS can calculate the average load of the desulfurization system in all days according to the dispatching curve.
As an example, referring to fig. 5, the average load may be calculated from the load of each segment in the scheduling curve and the run time:
(400x7+550x1+600x1.5+700x1.5+800x2.5+900x2+1000x8.5)/24＝716MW。
it is worth noting that the compensation amount delta of the gypsum slurry discharge amount can be a key compensation parameter of peak-shifting adjustment, and the compensation amount delta can be calculated according to the average load and the real-time load.
In an implementation manner, the regulation parameters can include liquid level values in a box body of the gypsum discharging system, the dewatering system and the desulfurization wastewater treatment system;
in step S12, adjusting the gypsum slurry discharge in the gypsum discharge system, the dewatering system, and the desulfurization waste water treatment system according to the adjustment parameters may include:
Aiming at the boxes in the gypsum discharge system, the dehydration system and the desulfurization wastewater treatment system, under the condition that the liquid level value in the box is lower than the liquid level lower limit value, controlling the valve ports of water supplementing valves of other boxes at the upstream of the box in the desulfurization system to be opened so as to adjust the gypsum slurry discharge amount of the other boxes at the upstream of the box to be increased;
and under the condition that the liquid level in the box body is higher than the upper limit value of the liquid level, controlling the valve ports of water supplementing valves of other box bodies upstream of the box body in the desulfurization system to be reduced or closed so as to adjust the gypsum slurry discharge amount of the other box bodies upstream of the box body to be reduced.
It should be noted that the liquid level of the desulfurizing tower 01 can be controlled by a demister flushing water system and a system water supplementing valve. When the liquid level of the desulfurizing tower 01 is low, a water supplementing valve is opened; when the liquid level of the desulfurizing tower 01 is high, water supplementing is reduced or a closed water supplementing valve is opened, and the like.
It should be understood that after the gypsum discharge system is started, the level balance control of the downstream system tanks can be regulated around the gypsum slurry discharge and limit the process makeup valves external to the tanks. The liquid level of each box body can be regulated by sending out a request command step by step from bottom to top according to the balance relation between the water inlet quantity and the water outlet quantity of the upstream and downstream systems of the box body in the desulfurization system.
As an example, when the liquid level of the target tank is low, a water discharge increasing request is sent to an upstream system of the target tank, and the valve opening of a water supplementing valve of other tanks upstream of the tank in the desulfurization system is controlled to be opened so as to adjust the increase of the gypsum slurry discharge amount of the other tanks upstream of the tank; on the contrary, when the liquid level of the target tank body is higher, a water drainage reducing request is sent to an upstream system of the target tank body, and the valve ports of water supplementing valves of other tank bodies upstream of the tank body in the desulfurization system are controlled to be reduced or closed so as to adjust the gypsum slurry discharge amount of the other tank bodies upstream of the tank body to be reduced.
In one possible embodiment, the control parameters may include chloride ion concentration of slurry or solution in the housing of the gypsum discharge system, dewatering system, and desulfurization wastewater treatment system;
in step S12, adjusting the gypsum slurry discharge in the gypsum discharge system, the dewatering system, and the desulfurization waste water treatment system according to the adjustment parameters may include:
Aiming at the boxes in the gypsum discharge system, the dehydration system and the desulfurization wastewater treatment system, under the condition that the chloride ion concentration of the slurry or solution in the box is higher than the upper limit value of the chloride ion concentration, controlling the valve ports of water supplementing valves of other boxes at the upstream of the box in the desulfurization system to be opened so as to adjust the gypsum slurry discharge amount of the other boxes at the upstream of the box to be increased;
And under the condition that the chloride ion concentration of the slurry or solution in the box body is lower than the lower limit value of the chloride ion concentration, controlling the valve ports of the water supplementing valves of other box bodies upstream of the box body in the desulfurization system to be reduced or closed so as to adjust the gypsum slurry discharge amount of the other box bodies upstream of the box body to be reduced.
It should be appreciated that the greater the gypsum slurry discharge, the greater the amount of chloride ions treated by the desulfurization waste water, the lesser the rate of chloride ion enrichment in the desulfurization tower, i.e., the lower the chloride ion concentration, is, the more advantageous the operation of the desulfurization system, since chloride ions are readily soluble in the slurry solution. Therefore, the control of chloride ions can be performed by utilizing the correspondence between the gypsum slurry discharge amount and the desulfurization wastewater treatment amount.
As shown in fig. 6, the joint control method of the desulfurization system is described in a complete example:
A. And obtaining the density of the gypsum slurry and the chloride ion concentration of the desulfurization absorption tower, and judging that the density of the gypsum slurry is more than 1080Kg/m 3 and the chloride ion concentration is more than 5000ppm. If yes, executing the step B; if not, the dewatering system is not started.
B. Starting a dehydration system, correcting the chloride ion concentration and the gypsum slurry density according to a unit load signal and the inlet SO 2 concentration, and when the density is more than or equal to 1140Kg/m 3 and the chloride ion concentration is more than 15000ppm at 1180Kg/m 3, the target operation mode is a high-density operation mode, and the flow rate Q is more than 25t/h; the density is more than or equal to 1110Kg/m 3 at 1140Kg/m 3 and more than or equal to 10000ppm at 15000ppm and more than or equal to chloride ion concentration, the target operation mode is a medium density operation mode, and 15t/h is more than or equal to Q and less than or equal to 25t/h; when the density is more than or equal to 1110Kg/m 3 and more than or equal to 1080Kg/m 3, and the chloride ion concentration is more than or equal to 10000ppm, the target operation mode is a low-density operation mode, and at the moment, the speed of 5t/h is more than or equal to Q and less than or equal to 15t/h. The dewatering system is controlled to operate in a target mode of operation.
C. The liquid level and the chloride ion concentration in the filtrate tank 08 are obtained, and whether the chloride ion concentration is more than 5000ppm and the liquid level is more than 500mm is judged. If yes, executing the step D; if not, the filtrate cyclone pump 09 is controlled to stop running.
D. And E, starting a filtrate cyclone pump 09 to open a regulating valve, correcting the chloride ion concentration and the gypsum slurry density according to the unit load signal and the inlet SO 2 concentration, and executing the step E. And under the condition that the liquid level is smaller than 2000mm, increasing the discharge amount of the upper-level wastewater, increasing the flow of the gypsum discharge pump, and returning to the step B.
E. According to the chloride ion liquid level concentration and the liquid level, the valve of the filtrate cyclone pump 09 is regulated, and under the condition that the chloride ion concentration is more than 15000ppm and the liquid level is more than 4500mm, the opening of the valve of the filtrate cyclone pump 09 is controlled, so that the flow Q of the valve is more than 50t/h; when the concentration of the chloride ions is more than or equal to 15000ppm and more than or equal to 10000ppm and the liquid level is more than or equal to 2500mm, controlling the opening of a valve of the filtrate cyclone pump 09 so that the flow rate of the valve is more than or equal to 50t/h and more than or equal to Q is more than 30t/h; when the concentration of chlorine ions is more than or equal to 10000ppm and the liquid level is more than or equal to 2500mm and is more than 500mm, the opening of a valve of the filtrate cyclone pump 09 is controlled, so that the flow rate of the valve is more than or equal to 30t/h and Q is more than or equal to 10t/h.
F. The liquid level and chloride ion concentration in the waste water tank 12 are obtained, and it is judged whether the chloride ion concentration is greater than 5000ppm and the liquid level is greater than 500mm. If yes, executing the step G; if not, the first waste water discharge pump 13 is controlled to stop operation.
G. the first waste water discharge pump 13 is started to open the regulating valve, and step H is performed. And when the liquid level is larger than 4000mm, reducing the water quantity of the upper stage, and when the liquid level is smaller than 2000mm, increasing the water quantity of the upper stage, and returning to the step B and the step D.
H. the liquid level and the chloride ion concentration in the wastewater collection tank 15 are obtained, and whether the chloride ion concentration is more than 5000ppm and the liquid level is more than 1000mm is judged. If yes, executing the step I; if not, the second waste water discharge pump 16 is controlled to stop operating.
I. Starting a second wastewater discharge pump 16 to open a regulating valve, regulating a valve of the second wastewater discharge pump 16 according to the chloride ion liquid level concentration and the liquid level, and controlling the opening of the valve of the second wastewater discharge pump 16 under the condition that the chloride ion concentration is more than 15000ppm and the liquid level is more than 2000mm so that the flow rate of the valve is more than 40t/h and more than 15t/h; when the concentration of chloride ions is more than or equal to 15000ppm and the liquid level is more than or equal to 2000mm and is more than 500mm, controlling the opening of a valve of the second wastewater discharge pump 16 so that the flow rate of the valve is more than or equal to 15t/h and Q is more than or equal to 5t/h; step J is performed. And reducing the water inflow of the upper stage when the liquid level is larger than 4000mm, increasing the water inflow of the upper stage when the liquid level is smaller than 2000mm, and returning to the step B and the step G.
J. The liquid level and chloride ion concentration in the pretreatment water tank 19 were obtained, and the chloride ion concentration was judged to be > 5000ppm and the liquid level was judged to be > 500mm. If yes, executing the step K; if not, the third water discharge pump 20 is controlled to stop operating.
K. Controlling the third waste water discharge pump 20 to open a regulating valve, regulating the valve of the third waste water discharge pump 20 according to the chloride ion liquid level concentration and the liquid level, and controlling the opening of the valve of the third waste water discharge pump 20 under the condition that the chloride ion concentration is more than 20000ppm and the liquid level is more than 2000mm, so that the flow rate of the valve is 20t/h more than Q more than 12t/h; when 20000ppm is more than or equal to the chloride ion concentration of more than 15000ppm and the liquid level is more than 2000mm, controlling the opening of a valve of the third water discharge pump 20 so that the flow rate of the valve is more than or equal to 12t/h and more than or equal to Q is more than 8t/h; when the concentration of chloride ions is more than or equal to 15000ppm and the liquid level is more than 2000mm, controlling the opening of a valve of the third waste water discharge pump 20 to ensure that the flow rate of the valve is more than or equal to 8t/h and Q is more than or equal to 4t/h; step L is performed. And reducing the water inflow of the upper level when the liquid level is larger than 4000mm, increasing the water inflow of the upper level when the liquid level is smaller than 2000mm, controlling the water inflow of the upper level system to be 40t/h & gtQ & gt15 t/h (the water inflow of the upper level system is 15t/h & gtQ & gt5 t/h by default), and returning to the step B and the step I.
L, acquiring the liquid level and the chloride ion concentration in the decrement concentration water tank 23, judging that the chloride ion concentration is more than 5000ppm and the liquid level is more than 500mm, and if yes, executing the step M; if not, the fourth waste water discharge pump 24 is controlled to stop operation.
M, starting a fourth wastewater discharge pump 24 to open a regulating valve, and regulating a valve of the fourth wastewater discharge pump 24 according to the chloride ion liquid level concentration and the liquid level, wherein under the condition that the chloride ion concentration is more than 40000ppm and the liquid level is more than 2000mm, the opening of the valve of the fourth wastewater discharge pump 24 is controlled, so that the flow rate of the valve is 10t/h & gtQ & gt6 t/h; when 40000ppm is more than or equal to the chloride ion concentration of more than 30000ppm and the liquid level is more than 2000mm, controlling the opening of a valve of the fourth wastewater discharge pump 24 to ensure that the flow rate of the valve is more than or equal to 6t/h and Q is more than 3t/h; when the concentration of chloride ions is more than or equal to 30000ppm and the liquid level is more than 2000mm, controlling the opening of a valve of the fourth wastewater discharge pump 24 to ensure that the flow rate of the valve is more than or equal to 3t/h and Q; step N is performed.
And N, discharging the desulfurization wastewater discharged by the upstream system into a desulfurization wastewater zero-discharge auxiliary device 31.
In summary, after the gypsum discharge is started, according to a built-in formula, the gypsum slurry discharge amount is calculated and an instruction is output by combining a scheduling curve, operation environment parameters and the like. The desulfurization system guides the balance adjustment between the limestone slurry supply and the gypsum discharge amount according to the change conditions of average load, inlet SO 2 concentration and the like according to a default high-density 1150mg/Nm 3 mode. The dewatering system is executed according to normal sequential control logic; the desulfurization wastewater treatment system is started according to the liquid level sequential control of the wastewater tank and adjusts the wastewater treatment capacity to operate by combining the dispatching curve and the duty ratio of the actual load and the average load.
In the adjusting process, if the chloride ion concentration is more than 20000ppm, the desulfurization system is automatically switched into a medium density control mode, namely, the wastewater discharge is increased, the pH value is reduced, the limestone slurry supply is reduced, the fresh process water supply is increased, and the like for adjustment.
In the adjusting process, if the gypsum density is less than 1080mg/Nm3, the desulfurization system is automatically switched into a low-density control mode, namely, the gypsum discharge amount is reduced, the pH value is increased, the oxidation air quantity is increased, forced oxidation is carried out, and the like.
The desulfurization system in the embodiment of the disclosure can execute the joint debugging joint control and continuous stable operation mode, thereby reducing defects or hidden dangers caused by frequent start and stop of each device in the desulfurization system, improving the safety and reliability of the device and laying a foundation for full-automatic sequential control adjustment. And a composite control strategy of 'gypsum slurry density + chloride ion concentration + liquid level' is adopted to comprehensively integrate the sequential control logic design of the whole system, so that the safe, economic and environment-friendly index operation of the three systems is always maintained, and further the adverse effects caused by manual intervention and poor operation quality are relieved.
Based on the same inventive concept, the disclosure further provides a joint adjustment and control device of a desulfurization system, wherein the upstream of the desulfurization system is a gypsum discharge system, the midstream of the desulfurization system is a dehydration system, the downstream of the desulfurization system is a desulfurization wastewater treatment system, and the joint adjustment and control device of the desulfurization system comprises a determination module 701 and a control module 702.
Wherein the determining module 701 is configured to determine a regulation parameter of the desulfurization system.
The control module 702 is configured to adjust the gypsum slurry discharge in the gypsum discharge system, the dewatering system, and the desulfurization waste water treatment system according to the regulation parameters so that the overall gypsum slurry discharge of the desulfurization system remains balanced for a unit time.
In the embodiment of the disclosure, the gypsum slurry discharge amount (single-side amount) is used as a control core of the three-system, and the gypsum slurry discharge amount in the three-system is regulated by regulating parameters, so that a logic control program becomes simple, practical and efficient. Compared with the traditional control mode, the gypsum slurry discharge amount cannot adopt the control mode of high density, large flow and high discharge, and a peak staggering discharge mode (namely high load, low load and multiple rows, and balance of gypsum slurry density in unit time) is needed to be adopted, so that the balance relation among three systems is effectively maintained, defects generated by rotating parts of equipment in a desulfurization system caused by frequent start and stop of the desulfurization system are avoided, the safety and reliability of the equipment are influenced, the problem that the equipment is unreliable due to frequent start and stop of the system is solved, the equipment defects and failure rate are reduced, and the automatic regulation and control capability and the safe, economic and environment-friendly operation level of the desulfurization system are improved.
In one possible embodiment, the regulatory parameters may include an offset to the gypsum slurry discharge;
a control module 702 configured to adjust the gypsum slurry discharge of the system to a current gypsum slurry discharge minus the offset for the gypsum discharge system, the dewatering system, and the desulfurization waste water treatment system, if the system is under high load;
When the system is at low load, the gypsum slurry discharge of the system is adjusted to the current gypsum slurry discharge plus the offset.
In an implementation manner, the determining module 701 is configured to determine an average load of the desulfurization system throughout the day according to a scheduling curve of the desulfurization system;
Respectively determining a first gypsum slurry discharge amount corresponding to the average load and a second gypsum slurry discharge amount corresponding to the real-time load of the desulfurization system;
The difference between the second gypsum slurry discharge and the first gypsum slurry discharge is calculated as a compensation amount for the gypsum slurry discharge.
In one possible embodiment, the control parameters may include liquid level values in the tanks of the gypsum discharge system, the dewatering system, and the desulfurization wastewater treatment system;
A control module 702 configured to control opening of valve ports of water replenishment valves of other tanks upstream of the tank in the desulfurization system to adjust an increase in gypsum slurry discharge amount of the other tanks upstream of the tank, in a case where a liquid level value in the tank is lower than a liquid level lower limit value for the tanks in the gypsum discharge system, the dehydration system, and the desulfurization wastewater treatment system;
and under the condition that the liquid level in the box body is higher than the upper limit value of the liquid level, controlling the valve ports of water supplementing valves of other box bodies upstream of the box body in the desulfurization system to be reduced or closed so as to adjust the gypsum slurry discharge amount of the other box bodies upstream of the box body to be reduced.
In one possible embodiment, the control parameters may include chloride ion concentration of slurry or solution in the housing of the gypsum discharge system, dewatering system, and desulfurization wastewater treatment system;
a control module 702 configured to control opening of valve ports of water replenishment valves of other tanks upstream of the tank in the desulfurization system to adjust an increase in gypsum slurry discharge amount of the other tanks upstream of the tank in the case where the chloride ion concentration of the slurry or solution in the tank is higher than an upper limit value of the chloride ion concentration for the tanks in the gypsum discharge system, the dehydration system, and the desulfurization wastewater treatment system;
And under the condition that the chloride ion concentration of the slurry or solution in the box body is lower than the lower limit value of the chloride ion concentration, controlling the valve ports of the water supplementing valves of other box bodies upstream of the box body in the desulfurization system to be reduced or closed so as to adjust the gypsum slurry discharge amount of the other box bodies upstream of the box body to be reduced.
In one implementation, the control module 702 is further configured to determine a gypsum slurry density of a desulfurization tower in a gypsum discharge system;
A target operation mode is determined according to the density of the gypsum slurry, and the gypsum discharge system is controlled to execute the target operation mode, thereby driving the dewatering system and the desulfurization wastewater treatment system to operate, wherein the target operation mode comprises one of a high-density operation mode, a medium-density operation mode and a low-density operation mode.
In one implementation, the control module 702 is configured to determine the high density mode to be a target operating mode if the gypsum slurry density is in a first density interval; or alternatively
Determining the medium density mode as a target operation mode under the condition that the gypsum slurry density is in a second density interval; or alternatively
And determining the low-density mode as a target operation mode when the gypsum slurry density is in a third density interval, wherein the lower limit value of the first density interval is larger than the upper limit value of the second density interval, and the lower limit value of the second density interval is larger than the upper limit value of the third density interval.
The specific manner in which the respective modules perform the operations of the joint control device for the desulfurization system in the above-described embodiment has been described in detail in the embodiment related to the method, and will not be described in detail herein.
Based on the same inventive concept, the present disclosure also provides an electronic device, including:
a memory having a computer program stored thereon;
And the processor is used for executing the computer program in the memory to realize the steps of the joint debugging joint control method of the desulfurization system.
In the embodiment of the disclosure, the gypsum slurry discharge amount (single-side amount) is used as a control core of the three-system, and the gypsum slurry discharge amount in the three-system is regulated by regulating parameters, so that a logic control program becomes simple, practical and efficient. Compared with the traditional control mode, the gypsum slurry discharge amount cannot adopt the control mode of high density, large flow and high discharge, and a peak staggering discharge mode (namely high load, low load and multiple rows, and balance of gypsum slurry density in unit time) is needed to be adopted, so that the balance relation among three systems is effectively maintained, defects generated by rotating parts of equipment in a desulfurization system caused by frequent start and stop of the desulfurization system are avoided, the safety and reliability of the equipment are influenced, the problem that the equipment is unreliable due to frequent start and stop of the system is solved, the equipment defects and failure rate are reduced, and the automatic regulation and control capability and the safe, economic and environment-friendly operation level of the desulfurization system are improved.
Fig. 8 is a block diagram of an electronic device 800, according to an example embodiment. As shown in fig. 8, the electronic device 800 may include: a processor 801, a memory 802. The electronic device 800 may also include one or more of a multimedia component 803, an input/output (I/O) interface 804, and a communication component 805.
The processor 801 is configured to control the overall operation of the electronic device 800 to perform all or part of the steps in the above-described joint debugging and control method of the desulfurization system. The memory 802 is used to store various types of data to support operation at the electronic device 800, which may include, for example, instructions for any application or method operating on the electronic device 800, as well as application-related data, such as contact data, messages sent and received, pictures, audio, video, and so forth. The Memory 802 may be implemented by any type or combination of volatile or non-volatile Memory devices, such as static random access Memory (Static Random Access Memory, SRAM for short), electrically erasable programmable Read-Only Memory (ELECTRICALLY ERASABLE PROGRAMMABLE READ-Only Memory, EEPROM for short), erasable programmable Read-Only Memory (Erasable Programmable Read-Only Memory, EPROM for short), programmable Read-Only Memory (Programmable Read-Only Memory, PROM for short), read-Only Memory (ROM for short), magnetic Memory, flash Memory, magnetic disk, or optical disk. The multimedia component 803 may include a screen and an audio component. Wherein the screen may be, for example, a touch screen, the audio component being for outputting and/or inputting audio signals. For example, the audio component may include a microphone for receiving external audio signals. The received audio signals may be further stored in the memory 802 or transmitted through the communication component 805. The audio assembly further comprises at least one speaker for outputting audio signals. The I/O interface 804 provides an interface between the processor 801 and other interface modules, which may be a keyboard, mouse, buttons, etc. These buttons may be virtual buttons or physical buttons. The communication component 805 is used for wired or wireless communication between the electronic device 800 and other devices. Wireless Communication, such as Wi-Fi, bluetooth, near Field Communication (NFC) for short, 2G, 3G, 4G, NB-IOT, eMTC, or other 5G, etc., or one or a combination of more of them, is not limited herein. The corresponding communication component 805 may thus comprise: wi-Fi module, bluetooth module, NFC module, etc.
In an exemplary embodiment, the electronic device 800 may be implemented by one or more Application-specific integrated circuits (ASIC), digital signal Processor (DIGITAL SIGNAL Processor, DSP), digital signal processing device (DIGITAL SIGNAL Processing Device, DSPD), programmable logic device (Programmable Logic Device, PLD), field programmable gate array (Field Programmable GATE ARRAY, FPGA), controller, microcontroller, microprocessor, or other electronic component for performing the above-described joint modulation and control method of the desulfurization system.
In another exemplary embodiment, a computer readable storage medium is also provided that includes program instructions that, when executed by a processor, implement the steps of the joint debugging and control method of a desulfurization system described above. For example, the computer readable storage medium may be the memory 802 including program instructions described above, which are executable by the processor 801 of the electronic device 800 to perform the joint modulation and control method of the desulfurization system described above.
In another exemplary embodiment, a computer program product is also provided, the computer program product comprising a computer program executable by a programmable apparatus, the computer program having code portions for performing the joint control method of a desulfurization system as described above when executed by the programmable apparatus.
The preferred embodiments of the present disclosure have been described in detail above with reference to the accompanying drawings, but the present disclosure is not limited to the specific details of the embodiments described above, and various simple modifications may be made to the technical solutions of the present disclosure within the scope of the technical concept of the present disclosure, and all the simple modifications belong to the protection scope of the present disclosure.
In addition, the specific features described in the above embodiments may be combined in any suitable manner without contradiction. The various possible combinations are not described further in this disclosure in order to avoid unnecessary repetition.
Moreover, any combination between the various embodiments of the present disclosure is possible as long as it does not depart from the spirit of the present disclosure, which should also be construed as the disclosure of the present disclosure.
Claims (10)
1. The joint debugging and joint control method of the desulfurization system is characterized in that the upstream of the desulfurization system is a gypsum discharge system, the midstream of the desulfurization system is a dehydration system, and the downstream of the desulfurization system is a desulfurization wastewater treatment system, and the method comprises the following steps:
determining regulation and control parameters of the desulfurization system;
And adjusting the gypsum slurry discharge amount in the gypsum discharge system, the dehydration system and the desulfurization wastewater treatment system according to the regulation parameters so as to maintain the overall gypsum slurry discharge amount of the desulfurization system in an equilibrium state in unit time.
2. The method of joint control of a desulfurization system of claim 1, wherein the regulatory parameter comprises an offset to the gypsum slurry discharge;
The adjusting of the gypsum slurry discharge in the gypsum discharge system, the dewatering system and the desulfurization wastewater treatment system according to the adjustment parameters comprises:
adjusting the gypsum slurry discharge amount of the system to be the current gypsum slurry discharge amount minus the offset amount in the case where the system is a high load with respect to the gypsum discharge system, the dewatering system, and the desulfurization wastewater treatment system;
When the system is at a low load, the gypsum slurry discharge of the system is adjusted to the current gypsum slurry discharge plus the offset.
3. The joint debugging joint control method of a desulfurization system according to claim 2, wherein determining the regulation parameters of the desulfurization system comprises:
Determining the average load of the desulfurization system in all days according to the scheduling curve of the desulfurization system;
Respectively determining a first gypsum slurry discharge amount corresponding to the average load and a second gypsum slurry discharge amount corresponding to the real-time load of the desulfurization system;
And calculating a difference between the second gypsum slurry discharge and the first gypsum slurry discharge as a compensation amount for the gypsum slurry discharge.
4. The joint control method of desulfurization systems according to claim 1, wherein the control parameters include liquid level values in the gypsum discharge system, the dewatering system, and a tank in the desulfurization wastewater treatment system;
The adjusting of the gypsum slurry discharge in the gypsum discharge system, the dewatering system and the desulfurization wastewater treatment system according to the adjustment parameters comprises:
controlling valve ports of water supplementing valves of other boxes upstream of the boxes in the desulfurization system to be opened to adjust the increase of gypsum slurry discharge amount of the other boxes upstream of the boxes under the condition that the liquid level value in the boxes is lower than the liquid level lower limit value for the boxes in the gypsum discharge system, the dehydration system and the desulfurization wastewater treatment system;
and under the condition that the liquid level in the box body is higher than the liquid level upper limit value, controlling valve ports of water supplementing valves of other box bodies upstream of the box body in the desulfurization system to be reduced or closed so as to adjust the gypsum slurry discharge amount of the other box bodies upstream of the box body to be reduced.
5. The method of claim 1, wherein the control parameters include chloride ion concentration of slurry or solution in the gypsum discharge system, the dewatering system, and the desulfurization wastewater treatment system;
The adjusting of the gypsum slurry discharge in the gypsum discharge system, the dewatering system and the desulfurization wastewater treatment system according to the adjustment parameters comprises:
Controlling the valve ports of water replenishing valves of other tanks upstream of the tank in the desulfurization system to be opened to adjust the increase of gypsum slurry discharge amount of the other tanks upstream of the tank when the chloride ion concentration of slurry or solution in the tank is higher than the chloride ion concentration upper limit value for the tanks in the gypsum discharge system, the dehydration system and the desulfurization wastewater treatment system;
And under the condition that the chloride ion concentration of the slurry or solution in the box body is lower than the lower limit value of the chloride ion concentration, controlling the valve ports of water supplementing valves of other box bodies upstream of the box body in the desulfurization system to be reduced or closed so as to adjust the gypsum slurry discharge amount of the other box bodies upstream of the box body to be reduced.
6. The joint control method of a desulfurization system according to any one of claims 1 to 5, characterized in that the method further comprises:
determining a gypsum slurry density of a desulfurization tower in said gypsum discharge system;
And determining a target operation mode according to the gypsum slurry density, and controlling the gypsum discharge system to execute the target operation mode so as to drive the dewatering system and the desulfurization wastewater treatment system to operate, wherein the target operation mode comprises one of a high-density operation mode, a medium-density operation mode and a low-density operation mode.
7. The joint control method of a desulfurization system according to claim 6, wherein said determining a target operation mode based on said gypsum slurry density comprises:
Determining a high density mode as a target operating mode if the gypsum slurry density is in a first density interval; or alternatively
Determining a medium density mode as a target operating mode when the gypsum slurry density is in a second density interval; or alternatively
And determining a low-density mode as a target operation mode when the gypsum slurry density is in a third density interval, wherein the lower limit value of the first density interval is greater than the upper limit value of the second density interval, and the lower limit value of the second density interval is greater than the upper limit value of the third density interval.
8. The utility model provides a desulfurization system's joint debugging allies oneself with accuse device, its characterized in that, desulfurization system's upper reaches is gypsum discharge system, desulfurization system's midstream is dewatering system, desulfurization system's downstream is desulfurization wastewater treatment system, the device includes:
A determination module configured to determine a regulatory parameter of the desulfurization system;
a control module configured to adjust the gypsum slurry discharge in the gypsum discharge system, the dewatering system, and the desulfurization wastewater treatment system according to the regulation parameters so that the overall gypsum slurry discharge of the desulfurization system maintains an equilibrium state for a unit time.
9. A non-transitory computer readable storage medium having stored thereon a computer program, which when executed by a processor performs the steps of the method according to any of claims 1-7.
10. An electronic device, comprising:
a memory having a computer program stored thereon;
a processor for executing the computer program in the memory to implement the steps of the method of any one of claims 1-7.
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