CN114911191A - Automatic control system is synthesized in industrial kiln SOx/NOx control - Google Patents
Automatic control system is synthesized in industrial kiln SOx/NOx control Download PDFInfo
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- CN114911191A CN114911191A CN202210691749.XA CN202210691749A CN114911191A CN 114911191 A CN114911191 A CN 114911191A CN 202210691749 A CN202210691749 A CN 202210691749A CN 114911191 A CN114911191 A CN 114911191A
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- QGZKDVFQNNGYKY-UHFFFAOYSA-N Ammonia Chemical compound N QGZKDVFQNNGYKY-UHFFFAOYSA-N 0.000 claims abstract description 59
- 229910021529 ammonia Inorganic materials 0.000 claims abstract description 29
- 239000007789 gas Substances 0.000 claims abstract description 27
- UIIMBOGNXHQVGW-UHFFFAOYSA-M Sodium bicarbonate Chemical compound [Na+].OC([O-])=O UIIMBOGNXHQVGW-UHFFFAOYSA-M 0.000 claims abstract description 22
- 238000006477 desulfuration reaction Methods 0.000 claims abstract description 20
- 230000023556 desulfurization Effects 0.000 claims abstract description 20
- 238000005507 spraying Methods 0.000 claims abstract description 19
- VHUUQVKOLVNVRT-UHFFFAOYSA-N Ammonium hydroxide Chemical compound [NH4+].[OH-] VHUUQVKOLVNVRT-UHFFFAOYSA-N 0.000 claims abstract description 15
- 235000011114 ammonium hydroxide Nutrition 0.000 claims abstract description 15
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 claims abstract description 14
- 239000003546 flue gas Substances 0.000 claims abstract description 14
- XKMRRTOUMJRJIA-UHFFFAOYSA-N ammonia nh3 Chemical compound N.N XKMRRTOUMJRJIA-UHFFFAOYSA-N 0.000 claims abstract description 11
- 229910000030 sodium bicarbonate Inorganic materials 0.000 claims abstract description 11
- 235000017557 sodium bicarbonate Nutrition 0.000 claims abstract description 11
- 238000007781 pre-processing Methods 0.000 claims abstract description 10
- 238000000513 principal component analysis Methods 0.000 claims abstract description 9
- 239000000843 powder Substances 0.000 claims abstract description 8
- 238000002955 isolation Methods 0.000 claims abstract description 6
- 238000002347 injection Methods 0.000 claims description 24
- 239000007924 injection Substances 0.000 claims description 24
- 238000004364 calculation method Methods 0.000 claims description 11
- 230000003009 desulfurizing effect Effects 0.000 claims description 6
- 230000001105 regulatory effect Effects 0.000 claims description 6
- 238000012843 least square support vector machine Methods 0.000 claims description 4
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 claims description 3
- 239000001301 oxygen Substances 0.000 claims description 3
- 229910052760 oxygen Inorganic materials 0.000 claims description 3
- 239000004071 soot Substances 0.000 claims description 3
- 238000000034 method Methods 0.000 abstract description 3
- WBHQBSYUUJJSRZ-UHFFFAOYSA-M sodium bisulfate Chemical compound [Na+].OS([O-])(=O)=O WBHQBSYUUJJSRZ-UHFFFAOYSA-M 0.000 abstract description 2
- 229910000342 sodium bisulfate Inorganic materials 0.000 abstract description 2
- 238000002485 combustion reaction Methods 0.000 description 6
- MWUXSHHQAYIFBG-UHFFFAOYSA-N nitrogen oxide Inorganic materials O=[N] MWUXSHHQAYIFBG-UHFFFAOYSA-N 0.000 description 5
- 238000010586 diagram Methods 0.000 description 4
- BIGPRXCJEDHCLP-UHFFFAOYSA-N ammonium bisulfate Chemical compound [NH4+].OS([O-])(=O)=O BIGPRXCJEDHCLP-UHFFFAOYSA-N 0.000 description 2
- 239000003054 catalyst Substances 0.000 description 2
- 230000004069 differentiation Effects 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 230000010354 integration Effects 0.000 description 2
- 235000008247 Echinochloa frumentacea Nutrition 0.000 description 1
- 240000004072 Panicum sumatrense Species 0.000 description 1
- 229940122605 Short-acting muscarinic antagonist Drugs 0.000 description 1
- 238000004458 analytical method Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000010531 catalytic reduction reaction Methods 0.000 description 1
- 238000011217 control strategy Methods 0.000 description 1
- 230000001276 controlling effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 230000002779 inactivation Effects 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 239000000779 smoke Substances 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
- 238000012546 transfer Methods 0.000 description 1
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Classifications
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- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05B—CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
- G05B19/00—Programme-control systems
- G05B19/02—Programme-control systems electric
- G05B19/04—Programme control other than numerical control, i.e. in sequence controllers or logic controllers
- G05B19/05—Programmable logic controllers, e.g. simulating logic interconnections of signals according to ladder diagrams or function charts
- G05B19/058—Safety, monitoring
-
- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05B—CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
- G05B2219/00—Program-control systems
- G05B2219/10—Plc systems
- G05B2219/14—Plc safety
- G05B2219/14006—Safety, monitoring in general
-
- 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]
Abstract
The invention discloses a desulfurization and denitrification comprehensive automatic control system for an industrial kiln, which comprises a parameter acquisition module, an isolation transmitter, a PLC control cabinet, a main PID regulator, an auxiliary PID regulator, an industrial personal computer, a parameter setting module, an outlet NOx concentration setting submodule and an outlet SO 2 Concentration setting submodule, ammonia nitrogen molar ratio setting submodule, gas-powder ratio setting submodule, inlet gas concentration pre-estimating module, principal component analysis submodule, data preprocessing module submodule, feedforward signal obtaining module, actuator, ammonia water flow control valve and NaHCO 3 A supply amount controller; the invention provides an ammonia spraying and sodium bisulfate spraying automatic control system capable of being put into operation in the whole process, which improves the automatic control level and can ensure that NOx and SO at a flue gas outlet 2 The content is controlled within +/-10; the consumption of ammonia water and sodium bicarbonate can be saved by 20-30%, and the direct cost can be saved by more than 1000 yuan per day; greatly reducing the escape amount of ammonia in the discharged flue gas; the related power consumption of ammonia spraying and sodium bicarbonate spraying is reduced.
Description
Technical Field
The invention relates to the technical field of automatic control, in particular to a comprehensive automatic control system for desulfurization and denitrification of an industrial kiln.
Background
SCR, i.e. selective catalytic reduction, process for removing impurities from existing kilns
The system mostly adopts an SCR form, the ammonia injection control adopts a constant value control mode, and although the constant value control mode has a simple structure and is easy to set and test, the system has the following defects: firstly, when the combustion condition in the kiln furnace changes, the ammonia injection amount can not correspond to the removal amount required by the NOx value in the smoke, so that N at the outlet of the SCR is causedThe fluctuation of the value of Ox is large, so that the emission concentration of nitrogen oxides cannot meet the environmental protection requirement; secondly, excessive ammonia spraying is easily caused by constant value control, so that ammonium bisulfate is generated, and the ammonium bisulfate is a substance with strong viscosity and can be adsorbed on the surface of the catalyst to cause inactivation of the catalyst, so that the denitration efficiency is seriously reduced; and thirdly, the desulfurization system adopts a mode of directly spraying sodium bicarbonate powder into the desulfurization tower, the spraying amount of sodium bicarbonate also adopts a fixed value mode, the sodium bicarbonate can not adapt to variable working condition operation, and the sodium bicarbonate is very sensitive to external interference.
Disclosure of Invention
The invention aims to provide a comprehensive automatic control system for desulfurization and denitrification of an industrial kiln, which aims to solve the problems in the background technology.
In order to achieve the purpose, the invention provides the following technical scheme: the utility model provides an industrial kiln SOx/NOx control synthesizes automatic control system, includes parameter acquisition module, parameter acquisition module electric connection has the isolation changer, keeps apart changer electric connection and has the PLC switch board, PLC switch board electric connection has industrial computer and executor.
Preferably, the parameter signals collected by the parameter collecting module comprise outlet NOx concentration, particulate matters, oxygen content and outlet SO 2 Concentration, SCR inlet flue gas pressure, SCR inlet flue gas temperature, soot blower pressure, the temperature and gas pressure of two groups of combustors, upper segment gas outlet pressure, upper segment gas outlet temperature, lower segment gas outlet pressure, lower segment gas outlet temperature, main pipe pressure, furnace bottom temperature, currents of two ammonia water pumps, flow of an ammonia water flowmeter, opening value of an ammonia water regulating valve, inlet air pressure of a desulfurizing tower and desulfurizing sodium bicarbonate spraying pressure.
Preferably, a main PID regulator and an auxiliary PID regulator are arranged in the PLC control cabinet.
Preferably, the industrial personal computer comprises a parameter setting module, an inlet gas concentration pre-estimation module and a feedforward signal acquisition module, and the feedforward signal acquisition module is respectively in data connection with the parameter setting module and the inlet gas concentration pre-estimation module.
Preferably, the parameter setting module includes outlet NOx enrichmentDegree setting submodule and outlet SO 2 A concentration setting submodule, an ammonia nitrogen molar ratio setting submodule and a gas-powder ratio setting submodule.
Preferably, the inlet gas concentration estimation module comprises a principal component analysis submodule, the principal component analysis submodule is in data connection with a data preprocessing module submodule, and the data preprocessing module submodule is in data connection with an inlet NOx concentration estimation submodule and an inlet SO 2 And a concentration estimation submodule.
Preferably, the inlet NOx concentration predictor module and the inlet SO 2 The concentration estimation submodule adopts a least square support vector machine.
Preferably, the feed-forward signal acquisition module comprises an ammonia injection amount calculation submodule and NaHCO injection submodule 3 And a metering operator module.
Preferably, the operational formula of the ammonia injection amount calculation submodule is as follows:
Q＝C×n×q
wherein Q is theoretical ammonia injection amount, C is optimal ammonia nitrogen molar ratio, n is inlet NOx concentration estimated value, and Q is inlet flue gas flow.
Preferably, the actuator comprises an ammonia flow control valve and NaHCO 3 A supply amount controller.
Compared with the prior art, the invention has the beneficial effects that:
1. provides an ammonia spraying and sodium bisulfate spraying automatic control system which can be put into operation in the whole course, improves the automatic control level, and can ensure that NOx and SO at the flue gas outlet 2 The content is controlled within +/-10;
2. the consumption of ammonia water and sodium bicarbonate can be saved by 20-30%, and the direct cost can be saved by more than 1000 yuan per day;
3. greatly reducing the escape amount of ammonia in the discharged flue gas;
4. the related power consumption of ammonia spraying and sodium bicarbonate spraying is reduced.
Drawings
FIG. 1 is a block diagram of the system of the present invention;
FIG. 2 is a system flow diagram of the present invention;
FIG. 3 is a schematic diagram of a denitration cascade control;
FIG. 4 is a diagram of denitration control SAMA;
FIG. 5 is a general denitration technology roadmap;
FIG. 6 is a general technical roadmap for desulfurization;
in the figure: 1. a parameter acquisition module; 2. isolating the transmitter; 3. a PLC control cabinet; 30. a master PID regulator; 31. a secondary PID regulator; 4. an industrial personal computer; 40. a parameter setting module; 400. an outlet NOx concentration setting submodule; 401. outlet SO 2 A concentration setting submodule; 402. ammonia nitrogen molar ratio setting submodule; 403. a gas-powder ratio setting submodule; 41. an inlet gas concentration estimation module; 410. a principal component analysis submodule; 411. a data preprocessing module submodule; 412. an inlet NOx concentration estimation submodule; 413. inlet SO 2 A concentration estimation submodule; 42. a feedforward signal acquisition module; 420. an ammonia injection amount calculation submodule; 421. NaHCO spraying 3 A metering operator module; 5. an actuator; 50. an ammonia flow control valve; 51. NaHCO 2 3 A supply amount controller.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Referring to fig. 1-6, an embodiment of the present invention is shown: a desulfurization and denitrification integrated automatic control system for an industrial kiln comprises a parameter acquisition module 1, wherein the parameter acquisition module 1 is electrically connected with an isolation transmitter 2, the isolation transmitter 2 is electrically connected with a PLC control cabinet 3, and the PLC control cabinet 3 is electrically connected with an industrial personal computer 4 and an actuator 5; the parameter signals collected by the parameter collecting module 1 comprise outlet NOx concentration, particulate matters, oxygen content and outlet SO 2 Concentration, SCR inlet flue gas pressure, SCR inlet flue gas temperature, soot blower pressure, temperatures and gas pressures of two groups of burners, upper segment gas outlet pressure, upper segment gas outlet temperature, lower segmentThe device comprises a gas outlet pressure, a lower segment gas outlet temperature, a main pipe pressure, a furnace bottom temperature, currents of two ammonia water pumps, flow of an ammonia water flowmeter, an opening value of an ammonia water regulating valve, an inlet air pressure of a desulfurizing tower and a desulfurizing sodium bicarbonate spraying pressure; a main PID regulator 30 and an auxiliary PID regulator 31 are arranged in the PLC control cabinet 3; the industrial personal computer 4 comprises a parameter setting module 40, an inlet gas concentration pre-estimation module 41 and a feedforward signal acquisition module 42, wherein the feedforward signal acquisition module 42 is respectively in data connection with the parameter setting module 40 and the inlet gas concentration pre-estimation module 41; the parameter setting module 40 includes an outlet NOx concentration setting submodule 400, an outlet SO 2 A concentration setting submodule 401, an ammonia nitrogen molar ratio setting submodule 402 and a gas-powder ratio setting submodule 403; the inlet gas concentration estimation module 41 comprises a principal component analysis submodule 410, the principal component analysis submodule 410 is in data connection with a data preprocessing module submodule 411, and the data preprocessing module submodule 411 is in data connection with an inlet NOx concentration estimation submodule 412 and an inlet SO 2 A concentration estimation submodule 413; inlet NOx concentration estimator module 412 and inlet SO 2 The concentration estimation submodule 413 adopts a least square support vector machine; the feed forward signal acquisition module 42 includes an ammonia injection amount calculation submodule 420 and NaHCO injection 3 A metering operator module 421; the actuator 5 comprises an ammonia water flow control valve 50 and NaHCO 3 A supply amount controller 51; the operation formula of the ammonia injection amount calculation submodule 420 is:
Q＝C×n×q
wherein Q is theoretical ammonia injection amount, C is optimal ammonia nitrogen molar ratio, n is inlet NOx concentration estimated value, and Q is inlet flue gas flow.
The working principle is as follows: when the automatic desulfurization and denitrification device is used for automatic desulfurization and denitrification, 24 parameters related to kiln combustion and related parameters of denitrification and desulfurization are collected by the parameter collection module 1, are respectively transmitted to the PLC control cabinet 3 by the isolation transmitter 2 and then transmitted to the industrial personal computer 4 for analysis and processing, and the principal component analysis submodule 410 in the inlet gas concentration estimation module 41 influences the concentration of nitric oxide and SO when finding variable load 2 The main factor of concentration fluctuation, and transmits to the data preprocessing module sub-module 411 for preprocessing, and then transmits to the inlet NOx concentration estimationSubmodule 412 and inlet SO 2 And a concentration estimation submodule 413 for establishing inlet NOx and SO suitable for different combustion conditions by using a least square support vector machine 2 The predicted value of the concentration is transmitted to the feed-forward signal acquisition module 42, and the ammonia injection amount calculation submodule 420 and the NaHCO injection amount calculation submodule are used for combining the optimal ammonia nitrogen molar ratio and the flue gas flow under different working conditions 3 The calculation is performed by the calculation operator module 421 to obtain the theoretical ammonia injection amount and the theoretical NaHCO injection amount 3 Quantity, i.e. feed forward signal; outlet NOx and SO 2 The concentration value and the set value are transmitted to a main PID regulator 30 for operation, and then a feedforward signal is added to the concentration value and the set value and transmitted to an auxiliary PID regulator 31 to correct the set value of the ammonia injection amount, the ammonia flow and NaHCO 3 The flow rate is used as a negative feedback signal of the auxiliary PID regulator 31, the auxiliary PID regulator 31 sends a control instruction to the actuator 5 after operation, and the ammonia water flow control valve 50 and the NaHCO are respectively controlled 3 The supply quantity controller 51 makes the corresponding adjustment; wherein the sub-module 400, the outlet SO, may be set by the outlet NOx concentration in the parameter setting module 40 2 The concentration setting submodule 401, the ammonia nitrogen molar ratio setting submodule 402 and the gas-powder ratio setting submodule 403 carry out parameter setting; the invention adopts a strategy of cascade and feedforward, the cascade PID control can quickly overcome internal disturbance and adapt to the load change of the unit in time, and the feedforward control can reflect the regulated quantity to the regulator in advance, thereby overcoming the influence of a large delay link, improving the control quality and outputting the NOx concentration and SO 2 The concentration is a main adjusting parameter; ammonia gas flow and NaHCO 3 The supply amount is a secondary regulation parameter, and the feedforward control signal and the feedback control signal jointly form the ammonia injection amount and NaHCO injection 3 Real-time set value of the amount, ammonia injection amount and NaHCO injection 3 The actual value of the amount quickly tracks the set value, the optimal ammonia nitrogen molar ratio and gas-powder ratio are ensured, and the problems of ammonia spraying and NaHCO spraying can be overcome through cascade control 3 Nonlinear ammonia spraying amount and NaHCO spraying of opening of regulating valve 3 The amount of disturbance improves the dynamic characteristics of the system, and the NOx concentration and SO at the outlet can be effectively reduced 2 The concentration is stabilized at a set value; to overcome various uncertain factors on NOx concentration and SO at SCR outlet 2 Influence of concentration to ensure its operation near set valueThe method adopts a data-driven self-adaptive closed-loop control strategy, a set value disturbance experiment is carried out on site, object parameters are identified by using a particle swarm algorithm, transfer function models of a denitration control system are respectively established under different combustion conditions, corresponding PID (proportion integration differentiation) parameters are respectively set, a main regulator is made into a self-adaptive regulator by using the ideas of self-adaptive control and nonlinear control, the parameters of the regulator can be self-adaptively regulated along with the change of load, SO that the optimal control effect can be always ensured under the condition of the change of a combustion form, and in addition, an outlet SO (SO) is formed 2 The concentration measurement is designed behind the denitration system; according to the technical scheme, the big delay of the denitration system is overcome through a cascade and feedforward strategy and inlet NOx dynamic prediction, and the control is carried out in advance when the phenomenon of influencing NOx fluctuation is generated, SO that the problems of outlet NOx concentration fluctuation and standard exceeding caused by untimely control are solved, the problem of the mismatch between a PID (proportion integration differentiation) parameter and an object model caused by load change is solved through a closed-loop self-adaptive strategy, the optimal PID control effect can be generated under each combustion condition, the full-day investment automation of the desulfurization and denitration control system is realized, the workload of operators is reduced, and the NOx and SO discharged by a unit can be used for controlling the unit to be in advance 2 The concentration is stable within the national regulation standard.
It will be evident to those skilled in the art that the invention is not limited to the details of the foregoing illustrative embodiments, and that the present invention may be embodied in other specific forms without departing from the spirit or essential attributes thereof. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.
Claims (10)
1. The utility model provides an industrial kiln SOx/NOx control synthesizes automatic control system, includes parameter acquisition module (1), its characterized in that: parameter acquisition module (1) electric connection has isolation changer (2), keeps apart changer (2) electric connection and has PLC switch board (3), PLC switch board (3) electric connection has industrial computer (4) and executor (5).
2. The integrated automatic control system for desulfurization and denitrification of industrial kilns as claimed in claim 1, is characterized in that: the parameter signals collected by the parameter collecting module (1) comprise outlet NOx concentration, particulate matters, oxygen content and outlet SO 2 Concentration, SCR inlet flue gas pressure, SCR inlet flue gas temperature, soot blower pressure, the temperature and gas pressure of two groups of combustors, upper segment gas outlet pressure, upper segment gas outlet temperature, lower segment gas outlet pressure, lower segment gas outlet temperature, main pipe pressure, furnace bottom temperature, currents of two ammonia water pumps, flow of an ammonia water flowmeter, opening value of an ammonia water regulating valve, inlet air pressure of a desulfurizing tower and desulfurizing sodium bicarbonate spraying pressure.
3. The integrated automatic control system for desulfurization and denitrification of industrial kilns as claimed in claim 1, is characterized in that: and a main PID regulator (30) and an auxiliary PID regulator (31) are arranged in the PLC control cabinet (3).
4. The integrated automatic control system for desulfurization and denitrification of industrial kilns as claimed in claim 1, is characterized in that: the industrial personal computer (4) comprises a parameter setting module (40), an inlet gas concentration estimation module (41) and a feedforward signal acquisition module (42), and the feedforward signal acquisition module (42) is respectively in data connection with the parameter setting module (40) and the inlet gas concentration estimation module (41).
5. The integrated automatic control system for desulfurization and denitrification of industrial kilns as claimed in claim 4, characterized in that: the parameter setting module (40) comprises an outlet NOx concentration setting submodule (400) and an outlet SO concentration setting submodule 2 A concentration setting submodule (401), an ammonia nitrogen molar ratio setting submodule (402) and a gas-powder ratio setting submodule (403).
6. The desulfurization and denitrification heald of the industrial kiln of claim 4Close automatic control system, its characterized in that: the inlet gas concentration estimation module (41) comprises a principal component analysis submodule (410), the principal component analysis submodule (410) is in data connection with a data preprocessing module submodule (411), and the data preprocessing module submodule (411) is in data connection with an inlet NOx concentration estimation submodule (412) and an inlet SO concentration estimation submodule (412) 2 And a concentration estimation submodule (413).
7. The integrated automatic control system for desulfurization and denitrification of industrial kilns as claimed in claim 6, characterized in that: the inlet NOx concentration estimator module (412) and inlet SO 2 The concentration estimation submodule (413) adopts a least square support vector machine.
8. The integrated automatic control system for desulfurization and denitrification of industrial kilns as claimed in claim 4, characterized in that: the feed-forward signal acquisition module (42) comprises an ammonia injection quantity calculation submodule (420) and an NaHCO injection submodule 3 And a quantity metering sub-module (421).
9. The integrated automatic control system for desulfurization and denitrification of industrial kilns as claimed in claim 8, characterized in that: the operational formula of the ammonia injection amount calculation submodule (420) is as follows:
Q＝C×n×q
wherein Q is theoretical ammonia injection amount, C is optimal ammonia nitrogen molar ratio, n is inlet NOx concentration estimated value, and Q is inlet flue gas flow.
10. The integrated automatic control system for desulfurization and denitrification of industrial kilns as claimed in claim 1, is characterized in that: the actuator (5) comprises an ammonia water flow control valve (50) and NaHCO 3 A supply amount controller (51).
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| CN202210691749.XA CN114911191A (en) | 2022-06-17 | 2022-06-17 | Automatic control system is synthesized in industrial kiln SOx/NOx control |
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| CN202210691749.XA CN114911191A (en) | 2022-06-17 | 2022-06-17 | Automatic control system is synthesized in industrial kiln SOx/NOx control |
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Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106474895A (en) * | 2016-12-29 | 2017-03-08 | 苏跃进 | A kind of method and device of deep removal sulfureous in flue gas oxide |
| CN107561941A (en) * | 2017-09-01 | 2018-01-09 | 华北电力大学（保定） | A kind of full working scope qualified discharge control method of fired power generating unit denitrating system |
| CN112316718A (en) * | 2020-11-13 | 2021-02-05 | 西安热工研究院有限公司 | Denitration ammonia injection control system and method for W-flame boiler |
-
2022
- 2022-06-17 CN CN202210691749.XA patent/CN114911191A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106474895A (en) * | 2016-12-29 | 2017-03-08 | 苏跃进 | A kind of method and device of deep removal sulfureous in flue gas oxide |
| CN107561941A (en) * | 2017-09-01 | 2018-01-09 | 华北电力大学（保定） | A kind of full working scope qualified discharge control method of fired power generating unit denitrating system |
| CN112316718A (en) * | 2020-11-13 | 2021-02-05 | 西安热工研究院有限公司 | Denitration ammonia injection control system and method for W-flame boiler |
Non-Patent Citations (1)
| Title |
|---|
| 朱高峰: "基于主导因素NOx含量的动态预估的控制逻辑优化", 《节能》 * |
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