CN107544288A - A kind of denitration optimal control method and system - Google Patents
A kind of denitration optimal control method and system Download PDFInfo
- Publication number
- CN107544288A CN107544288A CN201710884835.1A CN201710884835A CN107544288A CN 107544288 A CN107544288 A CN 107544288A CN 201710884835 A CN201710884835 A CN 201710884835A CN 107544288 A CN107544288 A CN 107544288A
- Authority
- CN
- China
- Prior art keywords
- ammonia
- model
- consumption rate
- amount
- boiler combustion
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Abstract
The invention belongs to gas denitrifying technology field, there is provided a kind of denitration optimal control method and system, comprise the following steps：S1, obtain the burning data of boiler combustion system；S2, boiler combustion model is established according to the burning data, according to amount of nitrogen oxides caused by the boiler combustion model pre-estimating future；S3, ammonia Controlling model is established according to the amount of nitrogen oxides, the ammonia spraying amount of valve is predicted according to the ammonia Controlling model；S4, the aperture of simultaneously control valve is calculated according to the ammonia spraying amount.Present invention, avoiding influence of the amount of nitrogen oxides measurement delay to control system, the promptness of denitration control is realized, the escaping of ammonia is reduced by optimal ammonia consumption rate, realizes the accurate control to exporting nitrogen oxides.
Description
Technical field
The invention belongs to gas denitrifying technology field, and in particular to a kind of denitration optimal control method and system.
Background technology
Existing denitration control still based on PID control, for automatically adjusting model for ammonia, is typically first preset one and taken off
Nitre efficiency, then by CEMS instrument measurement SCR reactor inlet NOx concentrations, it is computed drawing required ammonia flow, with
CEMS instrument measurement SCR reactor outlet NOx concentrations are compared, then supply ammonia regulating valve by a PI adjusting meanss control.
Problems be present in this regulative mode：
(1) the flue gas flow value of regulating calculation foundation forms (non-measured data) by the conversion of boiler total blast volume, and considers
Flue gas is uniformly distributed the reactor (exhaust gas volumn actually in the reactor of both sides can not possibly divide equally) into both sides, this 2 points inclined
Difference will cause theoretical calculation misalignment to a certain extent, directly affect and automatically adjust.
(2) SCR reactor inlets, the exit NOx concentration of regulating calculation foundation are CEMS instrument measured values, data acquisition
In the presence of certain hysteresis quality (5~10min delay), and there is a certain degree of error in CEMS instrument measurements, to automatically adjusting
In the presence of certain influence.
(3) flue gas flow rate distribution will not very uniformly in SCR reactors, therefore the sample point of CEMS instrument may not possess representative
Property, also certain influence be present to automatically adjusting.
(4) when boiler combustion fluctuation is larger, PID control can not suppress to export the larger fluctuation of nitrogen oxides.
Thus existing PID control：The serious hysteresis of denitration control, and cause NOx fluctuations violent, cause the escaping of ammonia shadow
Ring.
The content of the invention
For the deficiency of problem above, a kind of denitration optimal control method of the present invention and system, avoid nitrogen oxides and contain
Measurement postpones the influence to control system, realizes the promptness of denitration control, the escaping of ammonia is reduced by optimal ammonia consumption rate,
Realize the accurate control to exporting nitrogen oxides.
A kind of denitration optimal control method of the present invention, comprises the following steps：
S1, obtain the burning data of boiler combustion system；
S2, boiler combustion model is established according to the burning data, produced according to the boiler combustion model pre-estimating is following
Amount of nitrogen oxides；
S3, ammonia Controlling model is established according to the amount of nitrogen oxides, valve is predicted according to the ammonia Controlling model
Ammonia spraying amount；
S4, the aperture of simultaneously control valve is calculated according to the ammonia spraying amount.
Preferably, the step S2 is also included by CEMS instrument measurement inlet nitrogen oxides concentration and by the entrance nitrogen
Oxide concentration feeds back to the boiler combustion model, and the boiler combustion model is modified, uses hard measurement result pair
The prediction result of hard measurement is confirmed and corrected, and recurrence goes out a relatively accurate and timely hard measurement prediction result.
Preferably, the step S3 also includes exporting nitrous oxides concentration and by the outlet nitrogen by CEMS instrument measurements
Oxide concentration feeds back to the ammonia Controlling model, and the ammonia Controlling model is modified, improves the precision of prediction
With the accuracy of denitration control.
Preferably, the ammonia Controlling model is established based on optimal ammonia consumption rate region, is realized dense to outlet nitrogen oxides
The accurate control of degree, the optimal ammonia consumption rate region are calculated by the analysis to ammonia consumption rate.
Preferably, ammonia consumption rate=k (inlet nitrogen oxides concentration-outlet nitrous oxides concentration) × boiler smoke/ammonia
Throughput, the k are ammonia/nitrogen oxides mol ratio；The ammonia consumption rate is the consumption of chemical reaction amount and ammonia of reactor ammonia
The ratio of total straying quatity, the optimal ammonia consumption rate region, the ammonia consumption rate position are calculated by the analysis to the ammonia consumption rate
When the optimal ammonia consumption rate region, the escaping of ammonia is minimum.
Preferably, the valve includes left side valve and right side valve, and the ammonia consumption rate includes left side ammonia consumption rate and right side
Ammonia consumption rate；
Prediction includes the prediction left side ammonia spraying amount of valve and the spray ammonia of right side valve for the ammonia spraying amount of ammonia valve door in the S3
Amount, by analyzing and matching the left side ammonia spraying amount of valve and the ammonia spraying amount of right side valve, realize left side ammonia consumption rate and right side ammonia consumption
Rate is balanced, reduces the escaping of ammonia rate.
Preferably, the boiler combustion model and the ammonia Controlling model are modified using genetic algorithm, are passed through
The continuous evolution Model of genetic algorithm, make model constantly close to real system, the precision of implementation model.
A kind of denitration Optimal Control System, including：
Data input module, obtain the burning data of boiler combustion system；
Boiler combustion model module, boiler combustion model is established according to the burning data, according to the boiler combustion mould
Type estimates amount of nitrogen oxides caused by future；
Ammonia Controlling model module, ammonia Controlling model is established according to the amount of nitrogen oxides, controlled according to the ammonia
Model prediction supplies the ammonia spraying amount of ammonia valve door；
Output module is controlled, is calculated according to the ammonia spraying amount and controls the aperture of spray ammonia valve door.
From such scheme, beneficial effects of the present invention are：Avoid amount of nitrogen oxides measurement delay is to control
The influence of system, the promptness of denitration control is realized, the escaping of ammonia is reduced by optimal ammonia consumption rate, realized to exporting nitrogen oxidation
The accurate control of thing.
Brief description of the drawings
, below will be in embodiment or description of the prior art in order to illustrate more clearly of technical scheme
The required accompanying drawing used is briefly described.
Fig. 1 is the flow chart of denitration optimal control method in the present embodiment；
Fig. 2 is the structural representation of denitration Optimal Control System in the present embodiment.
Embodiment
Embodiments of the invention are described in detail below in conjunction with accompanying drawing.Following examples are only used for clearer
Ground illustrates the product of the present invention, therefore be intended only as example, and can not be limited the scope of the invention with this.
Embodiment：
A kind of denitration optimal control method of embodiment provided by the invention, as shown in figure 1, comprising the following steps：
S1, obtain the burning data of boiler combustion system；
S2, boiler combustion model is established according to the burning data, produced according to the boiler combustion model pre-estimating is following
Amount of nitrogen oxides；By CEMS instrument measurement inlet nitrogen oxides concentration and by the inlet nitrogen oxides concentration feedback to institute
Boiler combustion model is stated, the boiler combustion model is modified, the prediction result of hard measurement is entered using hard measurement result
Row confirmation and amendment, recurrence go out a relatively accurate and timely hard measurement prediction result.
S3, ammonia Controlling model is established according to the amount of nitrogen oxides, valve is predicted according to the ammonia Controlling model
Ammonia spraying amount；Nitrous oxides concentration is exported by CEMS instrument measurements and the outlet nitrous oxides concentration is fed back into the ammonia
Controlling model, the ammonia Controlling model is modified, improves the precision of prediction and the accuracy of denitration control.
S4, the aperture of simultaneously control valve is calculated according to the ammonia spraying amount.
Boiler combustion model described in the present embodiment and the ammonia Controlling model are modified using genetic algorithm, are led to
The continuous evolution Model of the genetic algorithm is crossed, makes model constantly close to real system, the precision of implementation model.
Burning data described in the present embodiment includes coal-supplying amount, boiler capacity, primary air flow, oxygen amount etc., passes through these
Data establish boiler combustion model, judge following variable quantity of nitrogen oxides, are controlled in advance according to the variable quantity that nitrogen oxides is following
The spray ammonia valve opening of denitrating system processed, so avoid the problem of nitrogen oxides measurement postpones.
The present embodiment constantly relatively and is corrected by genetic algorithm to reality output and model output, to realize track reference
Value.Using rolling strategy, long-range optimization is regarded as the continuous rolling optimized in the recent period, the overall situation is realized on the basis of local optimum
Optimization；Using feedback compensation, solve the uncertain problems such as system interference, realize the optimization of denitration control, solve
The delay issue and boiler combustion moving of CEMS instrument measurements cause denitration control disturbance problem.
The ammonia Controlling model in wherein S3 is established based on optimal ammonia consumption rate region, is realized to exporting nitrogen oxides
The accurate control of concentration, the optimal ammonia consumption rate region are calculated by the analysis to ammonia consumption rate.The ammonia consumption rate=k (enters
Mouth nitrous oxides concentration-outlet nitrous oxides concentration) × boiler smoke/ammonia flow, the k is ammonia/nitrogen oxides mol ratio；
The ammonia consumption rate is the consumption of chemical reaction amount of reactor ammonia and the ratio of the total straying quatity of ammonia, by the ammonia consumption rate
The optimal ammonia consumption rate region is calculated in analysis, and when the ammonia consumption rate is positioned at the optimal ammonia consumption rate region, the escaping of ammonia is minimum.
The ammonia consumption rate includes left side ammonia consumption rate and right side ammonia consumption rate, and the valve in S3 includes left side valve and right side
Valve, in the S3 prediction include the prediction left side ammonia spraying amount of valve and the ammonia spraying amount of right side valve for the ammonia spraying amount of ammonia valve door,
By analyzing and matching the left side ammonia spraying amount of valve and the ammonia spraying amount of right side valve, realize that left side ammonia consumption rate and right side ammonia consumption rate are equal
Weighing apparatus, reduce the escaping of ammonia rate.
A kind of denitration Optimal Control System based on the above method, as shown in Fig. 2 including：
Data input module, obtain the burning data of boiler combustion system；
Boiler combustion model module, boiler combustion model is established according to the burning data, according to the boiler combustion mould
Type estimates amount of nitrogen oxides caused by future；
Ammonia Controlling model module, ammonia Controlling model is established according to the amount of nitrogen oxides, controlled according to the ammonia
Model prediction supplies the ammonia spraying amount of ammonia valve door；
Output module is controlled, is calculated according to the ammonia spraying amount and controls the aperture of spray ammonia valve door.
The control system that the present embodiment is applied to denitration utilizes original DCS control systems, improves system operation reliability,
Equipment investment is reduced, is easy to field conduct, the present embodiment uses realizes that the data of the system obtain by being communicated with DCS system data
Output is taken and instructed, retains all operations of former DCS system and the method for operation, passes through the method for operation set up in original operator station
Selection key, is automatically controlled switching of the mode in original control mode and the system control mode, and the control for passing through the system
Mode processed obtains more excellent more precise control.According to the accurate control of the system in this implementation, higher rational reactor is obtained
Denitration rate, denitration outlet NOx discharge are less than 50mg/m；Stable reactor outlet NOx emission concentration, boiler load change not
Environment-friendlydenitration denitration outlet NOX amplitudes of variation are less than 10 ± mg/m when big；Start and stop coal pulverizer exports environmentally friendly NOX with denitration during agc mode
Amplitude of variation is less than 15 ± mg/m；Environmentally friendly nitrous oxides concentration measuring point and reactor outlet nitrous oxides concentration measuring point is eliminated in time
Deviation；Control is steady to reduce amount of ammonia slip, so as to reduce air preheater blocking caused by ammonia crystallization, and the pollution to air；Reduce
The consumption of denitration ammonia, improve denitration economy；After implementing denitrating system optimal control, boiler load changes>It is environmentally friendly when 25%
Examine the original control system index of nitrous oxides concentration fluctuation ratio and reduce 50% or so.
Finally it should be noted that：The above embodiments are merely illustrative of the technical solutions of the present invention, rather than its limitations；Although
The present invention is described in detail with reference to foregoing embodiments, it will be understood by those within the art that：It is still
Technical scheme described in foregoing embodiments is modified, and either which part or all technical characteristic are equally replaced
Change；And these modifications or replacement, the essence of appropriate technical solution is departed from the model of various embodiments of the present invention technical scheme
Enclose, it all should cover among the claim of the present invention and the scope of specification.
Claims (8)
1. a kind of denitration optimal control method, it is characterised in that comprise the following steps：
S1, obtain the burning data of boiler combustion system；
S2, boiler combustion model is established according to the burning data, according to nitrogen caused by the boiler combustion model pre-estimating future
Oxide amount；
S3, ammonia Controlling model is established according to the amount of nitrogen oxides, the spray ammonia of valve is predicted according to the ammonia Controlling model
Amount；
S4, the aperture of simultaneously control valve is calculated according to the ammonia spraying amount.
2. a kind of denitration optimal control method according to claim 1, it is characterised in that the step S2 also includes passing through
CEMS instrument measurement inlet nitrogen oxides concentration simultaneously gives the inlet nitrogen oxides concentration feedback to the boiler combustion model, right
The boiler combustion model is modified, and the prediction result of hard measurement is confirmed and corrected using hard measurement result, recurrence
Go out a relatively accurate and timely hard measurement prediction result.
3. a kind of denitration optimal control method according to claim 1, it is characterised in that the step S3 also includes passing through
CMES instrument measurements export nitrous oxides concentration and the outlet nitrous oxides concentration are fed back into the ammonia Controlling model, right
The ammonia Controlling model is modified, and improves the precision of prediction and the accuracy of denitration control.
4. a kind of denitration optimal control method according to claim 1, it is characterised in that the ammonia Controlling model is based on
Optimal ammonia consumption rate region is established, and realizes the accurate control to exporting nitrous oxides concentration, and the optimal ammonia consumption rate region passes through
Analysis to ammonia consumption rate is calculated.
A kind of 5. denitration optimal control method according to claim 4, it is characterised in that the ammonia consumption rate=k (entrance nitrogen
Oxide concentration-outlet nitrous oxides concentration) × boiler smoke/ammonia flow, the k is ammonia/nitrogen oxides mol ratio；It is described
Ammonia consumption rate is the consumption of chemical reaction amount of reactor ammonia and the ratio of the total straying quatity of ammonia, passes through the analysis to the ammonia consumption rate
The optimal ammonia consumption rate region is calculated, when the ammonia consumption rate is positioned at the optimal ammonia consumption rate region, the escaping of ammonia is minimum.
6. a kind of denitration optimal control method according to claim 5, it is characterised in that the valve includes left side valve
With right side valve, the ammonia consumption rate includes left side ammonia consumption rate and right side ammonia consumption rate；
Prediction includes the prediction left side ammonia spraying amount of valve and the ammonia spraying amount of right side valve for the ammonia spraying amount of ammonia valve door in the S3, leads to
Analysis and the proportioning left side ammonia spraying amount of valve and the ammonia spraying amount of right side valve are crossed, realizes that left side ammonia consumption rate and right side ammonia consumption rate are equal
Weighing apparatus, reduce the escaping of ammonia rate.
7. a kind of denitration optimal control method according to claim 1, it is characterised in that the boiler combustion model and institute
State ammonia Controlling model to be modified using genetic algorithm, by the continuous evolution Model of the genetic algorithm, make model continuous
Close to real system, the precision of implementation model.
A kind of 8. denitration Optimal Control System of method according to claim 1, it is characterised in that including：
Data input module, obtain the burning data of boiler combustion system；
Boiler combustion model module, boiler combustion model is established according to the burning data, it is pre- according to the boiler combustion model
Estimate amount of nitrogen oxides caused by future；
Ammonia Controlling model module, ammonia Controlling model is established according to the amount of nitrogen oxides, according to the ammonia Controlling model
Ammonia spraying amount of the prediction for ammonia valve door；
Output module is controlled, is calculated according to the ammonia spraying amount and controls the aperture of spray ammonia valve door.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710884835.1A CN107544288B (en) | 2017-09-26 | 2017-09-26 | Denitration optimization control method and system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710884835.1A CN107544288B (en) | 2017-09-26 | 2017-09-26 | Denitration optimization control method and system |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN107544288A true CN107544288A (en) | 2018-01-05 |
| CN107544288B CN107544288B (en) | 2021-06-04 |
Family
ID=60964528
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710884835.1A Active CN107544288B (en) | 2017-09-26 | 2017-09-26 | Denitration optimization control method and system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107544288B (en) |
Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108664006A (en) * | 2018-07-02 | 2018-10-16 | 大唐环境产业集团股份有限公司 | It is a kind of that ammonia optimization method and system are intelligently sprayed based on the SCR denitration of zonal control and Dynamic matrix control |
| CN108680704A (en) * | 2018-04-23 | 2018-10-19 | 华北电力科学研究院有限责任公司 | The equal values determination method of SCR denitration device the escaping of ammonia based on ammonium hydroxide reducing agent and system |
| CN108837698A (en) * | 2018-07-02 | 2018-11-20 | 大唐环境产业集团股份有限公司 | Based on advanced measuring instrumentss and the SCR denitration of advanced control algorithm spray ammonia optimization method and system |
| CN108837699A (en) * | 2018-07-02 | 2018-11-20 | 大唐环境产业集团股份有限公司 | It is a kind of that ammonia optimization method and system are intelligently sprayed based on the SCR denitration of hard measurement and PREDICTIVE CONTROL |
| CN111425881A (en) * | 2020-03-30 | 2020-07-17 | 国家能源(山东)工程技术有限公司 | Method and system for reducing disturbance of start and stop of double-inlet and double-outlet coal mill on denitration 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 |
| CN112418284A (en) * | 2020-11-16 | 2021-02-26 | 华北电力大学 | Control method and system for SCR denitration system of full-working-condition power station |
| CN112933913A (en) * | 2021-02-08 | 2021-06-11 | 国家能源集团国源电力有限公司 | Ammonia injection control method and device and coal combustion system |
| CN114019823A (en) * | 2021-09-17 | 2022-02-08 | 华能巢湖发电有限责任公司 | Boiler four-tube overhaul diagnosis system based on three-dimensional virtual simulation |
| CN114534466A (en) * | 2020-11-11 | 2022-05-27 | 台泥资讯股份有限公司 | Method for controlling nitrogen oxide emission by control system |
| CN114878745A (en) * | 2022-04-25 | 2022-08-09 | 北京市生态环境保护科学研究院 | Gas boiler nitrogen oxide prediction monitoring system based on support vector machine |
| US11853023B2 (en) | 2020-11-11 | 2023-12-26 | Tcc Information Systems Corp. | Method of controlling coal management system for reducing coal usage |
Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0828249A (en) * | 1994-07-14 | 1996-01-30 | Tokyo Electric Power Co Inc:The | Denitration control device |
| CN104607042A (en) * | 2014-12-26 | 2015-05-13 | 东南大学 | Selective catalytic reduction (SCR) denitration system and method based on constraint predictive control |
| CN104932265A (en) * | 2015-06-07 | 2015-09-23 | 陈亮 | Control system for flue gas denitration based on mathematical model |
| CN105597537A (en) * | 2015-10-26 | 2016-05-25 | 烟台龙源电力技术股份有限公司 | Predication control technology-based denitration control method and denitration system thereof |
| CN105629738A (en) * | 2016-03-24 | 2016-06-01 | 内蒙古瑞特优化科技股份有限公司 | SCR (Selective Catalytic Reduction) flue gas denitration system control method and apparatus |
| CN105786035A (en) * | 2016-03-29 | 2016-07-20 | 东南大学 | Thermal power set SCR denitration optimization control system based on heuristic prediction control technology |
| CN106621738A (en) * | 2016-12-09 | 2017-05-10 | 吉林电力股份有限公司科技开发分公司 | Control device for reducing escaped ammonia in denitration process |
| CN106681381A (en) * | 2017-01-03 | 2017-05-17 | 华北电力大学 | SCR denitration system ammonia spraying quantity optimal control system and method based on intelligent feedforward signals |
| CN107168055A (en) * | 2017-05-15 | 2017-09-15 | 东南大学 | A kind of ammonia process of desulfurization optimal control method based on umlti-variable finite elements |
-
2017
- 2017-09-26 CN CN201710884835.1A patent/CN107544288B/en active Active
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0828249A (en) * | 1994-07-14 | 1996-01-30 | Tokyo Electric Power Co Inc:The | Denitration control device |
| CN104607042A (en) * | 2014-12-26 | 2015-05-13 | 东南大学 | Selective catalytic reduction (SCR) denitration system and method based on constraint predictive control |
| CN104932265A (en) * | 2015-06-07 | 2015-09-23 | 陈亮 | Control system for flue gas denitration based on mathematical model |
| CN105597537A (en) * | 2015-10-26 | 2016-05-25 | 烟台龙源电力技术股份有限公司 | Predication control technology-based denitration control method and denitration system thereof |
| CN105629738A (en) * | 2016-03-24 | 2016-06-01 | 内蒙古瑞特优化科技股份有限公司 | SCR (Selective Catalytic Reduction) flue gas denitration system control method and apparatus |
| CN105786035A (en) * | 2016-03-29 | 2016-07-20 | 东南大学 | Thermal power set SCR denitration optimization control system based on heuristic prediction control technology |
| CN106621738A (en) * | 2016-12-09 | 2017-05-10 | 吉林电力股份有限公司科技开发分公司 | Control device for reducing escaped ammonia in denitration process |
| CN106681381A (en) * | 2017-01-03 | 2017-05-17 | 华北电力大学 | SCR denitration system ammonia spraying quantity optimal control system and method based on intelligent feedforward signals |
| CN107168055A (en) * | 2017-05-15 | 2017-09-15 | 东南大学 | A kind of ammonia process of desulfurization optimal control method based on umlti-variable finite elements |
Cited By (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108680704A (en) * | 2018-04-23 | 2018-10-19 | 华北电力科学研究院有限责任公司 | The equal values determination method of SCR denitration device the escaping of ammonia based on ammonium hydroxide reducing agent and system |
| CN108664006A (en) * | 2018-07-02 | 2018-10-16 | 大唐环境产业集团股份有限公司 | It is a kind of that ammonia optimization method and system are intelligently sprayed based on the SCR denitration of zonal control and Dynamic matrix control |
| CN108837698A (en) * | 2018-07-02 | 2018-11-20 | 大唐环境产业集团股份有限公司 | Based on advanced measuring instrumentss and the SCR denitration of advanced control algorithm spray ammonia optimization method and system |
| CN108837699A (en) * | 2018-07-02 | 2018-11-20 | 大唐环境产业集团股份有限公司 | It is a kind of that ammonia optimization method and system are intelligently sprayed based on the SCR denitration of hard measurement and PREDICTIVE CONTROL |
| CN111425881B (en) * | 2020-03-30 | 2022-02-22 | 国家能源(山东)工程技术有限公司 | Method and system for reducing disturbance of start and stop of double-inlet and double-outlet coal mill on denitration system |
| CN111425881A (en) * | 2020-03-30 | 2020-07-17 | 国家能源(山东)工程技术有限公司 | Method and system for reducing disturbance of start and stop of double-inlet and double-outlet coal mill on denitration system |
| CN114534466A (en) * | 2020-11-11 | 2022-05-27 | 台泥资讯股份有限公司 | Method for controlling nitrogen oxide emission by control system |
| US11853023B2 (en) | 2020-11-11 | 2023-12-26 | Tcc Information Systems Corp. | Method of controlling coal management system for reducing coal usage |
| CN114534466B (en) * | 2020-11-11 | 2024-03-22 | 台泥资讯股份有限公司 | Method for controlling nitrogen oxide emission by control 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 |
| CN112418284A (en) * | 2020-11-16 | 2021-02-26 | 华北电力大学 | Control method and system for SCR denitration system of full-working-condition power station |
| CN112933913A (en) * | 2021-02-08 | 2021-06-11 | 国家能源集团国源电力有限公司 | Ammonia injection control method and device and coal combustion system |
| CN114019823A (en) * | 2021-09-17 | 2022-02-08 | 华能巢湖发电有限责任公司 | Boiler four-tube overhaul diagnosis system based on three-dimensional virtual simulation |
| CN114878745A (en) * | 2022-04-25 | 2022-08-09 | 北京市生态环境保护科学研究院 | Gas boiler nitrogen oxide prediction monitoring system based on support vector machine |
Also Published As
| Publication number | Publication date |
|---|---|
| CN107544288B (en) | 2021-06-04 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN107544288A (en) | A kind of denitration optimal control method and system | |
| CN107561941B (en) | Full-working-condition standard-reaching emission control method for thermal power generating unit denitration system | |
| CN105597537B (en) | Denitration control method based on Prediction and Control Technology | |
| CN105797576B (en) | Denitration ammonia injection control method for coal-fired unit | |
| CN108664006A (en) | It is a kind of that ammonia optimization method and system are intelligently sprayed based on the SCR denitration of zonal control and Dynamic matrix control | |
| CN108837698A (en) | Based on advanced measuring instrumentss and the SCR denitration of advanced control algorithm spray ammonia optimization method and system | |
| CN202207547U (en) | Reducing agent spraying control device of flue gas selective non-catalytic reduction (SNCR) denitration system | |
| CN108628177A (en) | A kind of SCR denitration intelligence spray ammonia optimization method and system based on model adaptation PID | |
| CN104826493A (en) | Control method for selective catalytic reduction flue gas denitrification system | |
| CN110368808A (en) | A kind of the ammonia spraying amount control method and system of SCR flue gas denitrification system | |
| CN109603525B (en) | Denitration partition ammonia spraying control method based on non-uniformity judgment | |
| CN110501901B (en) | SCR ammonia injection regulation optimization method based on full-load accurate denitration requirement | |
| CN106621738A (en) | Control device for reducing escaped ammonia in denitration process | |
| CN106268239A (en) | The control method that the integration of thermal power plant's denitration control system separates | |
| CN111026017A (en) | Double-process combined denitration interlocking control system for tail gas treatment of waste incineration plant | |
| CN112221347A (en) | Accurate ammonia injection control method for SCR denitration system | |
| CN111880504A (en) | Intelligent dynamic partition ammonia injection control method and system | |
| CN108816043A (en) | A kind of denitration device and its autocontrol method | |
| CN112316718A (en) | Denitration ammonia injection control system and method for W-flame boiler | |
| CN114307627B (en) | Denitration adjusting method based on theoretical ammonia consumption | |
| CN105487377B (en) | A kind of fuzzy controller of denitration urea pyrolysis technique | |
| CN113578007A (en) | Coal-fired flue gas SCR denitration regulation and control system and method based on partitioned ammonia injection | |
| CN112783115B (en) | Online real-time optimization method and device for steam power system | |
| CN109833773A (en) | A kind of NO_x Reduction by Effective ammonia flow accuracy control method | |
| CN113419570A (en) | Control method of flue gas denitration system of waste incineration power plant |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |