CN103574580B - Thermal power generating unit NOx discharge monitoring method and system - Google Patents
Thermal power generating unit NOx discharge monitoring method and system Download PDFInfo
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Abstract
The invention discloses a thermal power generating unit NOx discharge monitoring method and system. The method comprises the following steps: boiler operation parameters in a real-time database are read through a database server; correlation coefficients between the boiler operation parameters and boiler efficiency and NOx discharge are calculated through the database server, and boiler operation parameters which accord with conditions of the correlation coefficients are selected; the boiler efficiency and the NOx discharge are calculated by the database server according to the selected boiler operation parameters which accord with the conditions of the correlation coefficients, and the boiler operation parameters which accord with the conditions of the correlation coefficients, the boiler efficiency and the NOx discharge are transmitted to monitoring equipment for monitoring; when the calculated boiler efficiency and the NOx discharge do not accord with conditions, the monitoring equipment adjusts operating parameters of a boiler according to the boiler operation parameters which accord with conditions of the boiler efficiency and the NOx discharge. The thermal power generating unit NOx discharge monitoring method and system can realize real-time monitoring of the boiler operation parameters and optimize the NOx discharge of a thermal power generating unit, thereby reducing operating cost of the thermal power generating unit.
Description
Technical field
The present invention relates to field of thermal power, particularly, relate to a kind of fired power generating unit NOx emission method for supervising and system.
Background technology
In field of thermal power, the boiler of current fired power generating unit all have employed low NOx combusting technology substantially, and fired power generating unit economizer exit NOx can control at 600mg/Nm by the low NOx combusting technology that China adopts at present
3left and right, this concentration of emission does not meet the requirement of national environmental protection cloth promulgated by the ministries or commissions of the Central Government " fossil-fuel power plant atmospheric pollutant emission standard ", because " fossil-fuel power plant atmospheric pollutant emission standard " requires that firepower fired power generating unit performs NOx emission concentration and is less than 100mg/Nm
3standard.
In order to meet the requirement of above-mentioned national standard, for conventional thermal power plant, can realize as below: increase stove outer denitrating system, such as selective catalytic reduction (SCR); Carry out low-NOx combustor (LNB) system reform, make the discharge of improved low-NOx combustor meet national standard; By combustion control, final NOx emission concentration is made to meet the requirement of national standard.
For firepower fired power generating unit, single LNB technology is adopted to be difficult to the requirement be up to state standards, therefore need to increase SCR equipment, but in order to the requirement making final concentration of emission meet national standard, need the concentration of emission optimizing LNB, thus for the normal work of SCR equipment and the NOx that discharge meets national standard provide safeguard, but LNB discharge is not monitored and LNB and SCR is coordinated the implementation monitored at present.
Summary of the invention
The object of this invention is to provide a kind of fired power generating unit NOx emission method for supervising and system, to optimize the NOx discharge of fired power generating unit.
To achieve these goals, the invention provides a kind of fired power generating unit NOx emission method for supervising, the method comprises: database server reads the boiler operating parameter in real-time data base; Described database server calculates described boiler operating parameter and the coefficient correlation between boiler efficiency and NOx discharge, selects the described boiler operating parameter meeting coefficient correlation condition; Described database server calculates described boiler efficiency and described NOx discharge according to the selected described boiler operating parameter meeting described coefficient correlation condition, and the described database server described boiler operating parameter that meets coefficient correlation condition by described and described boiler efficiency and described NOx discharge are sent to watch-dog to monitor; Calculated described boiler efficiency and described NOx discharge ineligible time, described watch-dog is according to the operational factor of described boiler operating parameter adjustment boiler meeting described boiler efficiency and described NOx discharge condition.
Preferably, described boiler operating parameter comprises boiler load, main steam flow, main steam temperature, main steam pressure, feed temperature, feedwater flow, fuel quantity, air output, pressure fan electric current, absorbing quantity, air-introduced machine electric current, pressure fan baffle opening, air-introduced machine baffle opening, exhaust gas temperature, fire box temperature, hot blast temperature, primary air pressure, combustion chamber draft, secondary wind pressure, reheat temperature, desuperheating water of superheater amount, reheating spray water flux, coal pulverizer coal-supplying amount, secondary air damper aperture, primary air flow, coal pulverizer ventilation, enter the total coal amount of stove, and enter in stove total air at least both.
Preferably, the method also comprises: described database server reaches the described boiler operating parameter of rule rejecting abnormalities according to Rye.
Preferably, described database server calculates described boiler operating parameter and the coefficient correlation between described boiler efficiency and described NOx discharge comprises: described database server calculates the coefficient correlation between described boiler operating parameter and described boiler efficiency and the coefficient correlation between described boiler operating parameter and described NOx discharge according to following formula:
wherein ρ
ijfor boiler operating parameter x
iwith boiler efficiency or NOx discharge y
jbetween coefficient correlation,
for boiler operating parameter x
iaverage,
for boiler efficiency or NOx discharge y
javerage, i, j are positive integer.
Preferably, described database server selects the described boiler operating parameter meeting described coefficient correlation condition to comprise: the described boiler operating parameter that described database server is selected the coefficient correlation between described boiler operating parameter and described boiler efficiency to be greater than the first preset value and the coefficient correlation between described boiler operating parameter and described NOx discharge to be greater than the second preset value.
Preferably, described database server calculates described boiler efficiency according to the selected described boiler operating parameter meeting described coefficient correlation condition and described NOx discharge comprises: described database server builds the neutral net comprising input layer, hidden layer and output layer; Described database server will meet the node value of described boiler operating parameter as described input layer of described coefficient correlation condition; Described database server goes out the value of described boiler efficiency as output layer node and described NOx discharge by described neural computing.
Preferably, the method also comprises: boiler operating parameter, described boiler efficiency and described NOx discharge described in described database server normalization.
Preferably, the method also comprises: described database server calculates the ammonia consumption of SCR equipment needs according to described NOx discharge.
Preferably, the method also comprises: described database server utilizes NH
3at least one correction denitration efficiency in/NO mol ratio, flue-gas temperature, flue gas flow ratio and the escaping of ammonia rate.
Preferably, the method also comprises: described database server utilizes wet flue gas flow correction ammonia consumption in the CONCENTRATION DISTRIBUTION of NOx in SCR equipment flue and/or SCR equipment flue.
The invention provides a kind of fired power generating unit NOx emission monitoring system, this system comprises: real-time data base, for storing boiler operating parameter; Database server, for reading the boiler operating parameter in real-time data base; Calculate described boiler operating parameter and the coefficient correlation between boiler efficiency and NOx discharge, select the described boiler operating parameter meeting coefficient correlation condition; And calculate described boiler efficiency and described NOx discharge according to the selected described boiler operating parameter meeting described coefficient correlation condition; Watch-dog, for receive described database server send described in meet the described boiler operating parameter of coefficient correlation condition and described boiler efficiency and described NOx discharge to monitor; Calculated described boiler efficiency and described NOx discharge ineligible time, according to the operational factor of described boiler operating parameter adjustment boiler meeting described boiler efficiency and described NOx discharge condition.
Preferably, boiler operating parameter comprises boiler load, main steam flow, main steam temperature, main steam pressure, feed temperature, feedwater flow, fuel quantity, air output, pressure fan electric current, absorbing quantity, air-introduced machine electric current, pressure fan baffle opening, air-introduced machine baffle opening, exhaust gas temperature, fire box temperature, hot blast temperature, primary air pressure, combustion chamber draft, secondary wind pressure, reheat temperature, desuperheating water of superheater amount, reheating spray water flux, coal pulverizer coal-supplying amount, secondary air damper aperture, primary air flow, coal pulverizer ventilation, enter the total coal amount of stove, and enter in stove total air at least both.
Preferably, described database server is also for reaching the described boiler operating parameter of rule rejecting abnormalities according to Rye.
Preferably, described database server is used for calculating the coefficient correlation between described boiler operating parameter and described boiler efficiency and the coefficient correlation between described boiler operating parameter and described NOx discharge according to following formula:
wherein ρ
ijfor boiler operating parameter x
iwith boiler efficiency or NOx discharge y
jbetween coefficient correlation,
for boiler operating parameter x
iaverage,
for boiler efficiency or NOx discharge y
javerage, i, j are positive integer.
Preferably, the described database server boiler operating parameter that is greater than the second preset value for selecting the coefficient correlation between described boiler operating parameter and described boiler efficiency to be greater than the first preset value and the coefficient correlation between described boiler operating parameter and described NOx discharge.
Preferably, described database server is for building the neutral net comprising input layer, hidden layer and output layer; The node value of described boiler operating parameter as input layer of described coefficient correlation condition will be met; The value of described boiler efficiency as output layer node and described NOx discharge is gone out by described neural computing.
Preferably, described database server is used for boiler operating parameter, described boiler efficiency and described NOx discharge described in normalization.
Preferably, described database server is used for the ammonia consumption calculating SCR equipment needs according to described NOx discharge.
Preferably, described database server is used for utilizing NH
3at least one correction denitration efficiency in/NO mol ratio, flue-gas temperature, flue gas flow ratio and the escaping of ammonia rate.
Preferably, described database server is for utilizing wet flue gas flow correction ammonia consumption in the CONCENTRATION DISTRIBUTION of NOx in SCR equipment flue and/or SCR equipment flue.
The present invention can realize the real-time monitoring to boiler operating parameter, and can optimize the NOx discharge of fired power generating unit, thus saves the operating cost of fired power generating unit, reaches the effect that economic benefit combines with social benefit.
Other features and advantages of the present invention are described in detail in detailed description of the invention part subsequently.
Accompanying drawing explanation
Accompanying drawing is used to provide a further understanding of the present invention, and forms a part for description, is used from explanation the present invention, but is not construed as limiting the invention with detailed description of the invention one below.In the accompanying drawings:
Fig. 1 is fired power generating unit NOx emission provided by the invention monitoring flow chart;
Fig. 2 is neutral net schematic diagram provided by the invention;
Fig. 3 is fired power generating unit NOx emission monitoring system figure provided by the invention;
Fig. 4 is watch-dog user interface schematic diagram provided by the invention.
Description of reference numerals
Detailed description of the invention
Below in conjunction with accompanying drawing, the specific embodiment of the present invention is described in detail.Should be understood that, detailed description of the invention described herein, only for instruction and explanation of the present invention, is not limited to the present invention.
In order to realize the monitoring in NOx emission process, the invention provides and monitor flow process as shown in Figure 1, specifically comprise: database server reads the boiler operating parameter (step 101) in real-time data base; Described database server calculates described boiler operating parameter and the coefficient correlation between boiler efficiency and NOx discharge, selects the described boiler operating parameter (step 103) meeting coefficient correlation condition; Described database server calculates described boiler efficiency and described NOx discharge according to the selected described boiler operating parameter meeting described coefficient correlation condition, and the described database server described boiler operating parameter that meets coefficient correlation condition by described and described boiler efficiency and described NOx discharge are sent to watch-dog to carry out monitoring (step 105); Calculated described boiler efficiency and described NOx discharge ineligible time, described watch-dog is according to the operational factor (step 107) of described boiler operating parameter adjustment boiler meeting described boiler efficiency and described NOx discharge condition.The so-called described boiler operating parameter meeting described boiler efficiency and described NOx discharge condition refers to the boiler operating parameter corresponding when boiler operating efficiency and NOx discharge meet pre-conditioned herein.In fired power generating unit, boiler operating parameter is very many, such as boiler operating parameter can comprise boiler load, main steam flow, main steam temperature, main steam pressure, feed temperature, feedwater flow, fuel quantity, air output, pressure fan electric current, absorbing quantity, air-introduced machine electric current, pressure fan baffle opening, air-introduced machine baffle opening, exhaust gas temperature, fire box temperature, hot blast temperature, primary air pressure, combustion chamber draft, secondary wind pressure, reheat temperature, desuperheating water of superheater amount, reheating spray water flux, coal pulverizer coal-supplying amount, secondary air damper aperture, primary air flow, coal pulverizer ventilation, enter the total coal amount of stove, enter stove total air etc.It should be noted that, the boiler operating parameter herein enumerated only makes example and unrestricted, can also comprise other boiler operating parameter.
Because boiler operating parameter is very many, and the balance between boiler efficiency and NOx discharge is mainly laid particular emphasis on for the control of NOx discharge, make in the guaranteed situation of boiler efficiency, reducing NOx discharge as best one can.For this reason, need to choose available boiler operating parameter from many boiler operating parameters.In order to increase the validity of calculating and accelerate the speed of calculating, the described boiler operating parameter of rule rejecting abnormalities first can be reached according to Rye.It should be noted that, the boiler operating parameter of rejecting abnormalities non-invention is necessary, because when the boiler operating parameter of rejecting abnormalities, the present invention also can be implemented.
In order to calculate boiler operating parameter and the coefficient correlation between described boiler efficiency and described NOx discharge, can following formula be used:
wherein ρ
ijfor boiler operating parameter x
iwith boiler efficiency or NOx discharge y
jbetween coefficient correlation,
for boiler operating parameter x
iaverage,
for boiler efficiency or NOx discharge y
javerage, i, j are positive integer.
After above-mentioned Calculation of correlation factor, the described boiler operating parameter coefficient correlation between boiler operating parameter and described boiler efficiency can being selected to be greater than the first preset value (such as 0.3) and the coefficient correlation between described boiler operating parameter and described NOx discharge be greater than the second preset value (0.3).In order to convenience of calculation, selected boiler operating parameter can be normalized, such as, pass through following formula:
wherein x
ijrepresent the value of a jth attribute of the i-th sample data, min
jrepresent the minimum of a value of a jth attribute, max
jrepresent the maximum of a jth attribute, x
ij' be the data after standardization.Also corresponding normalized can be carried out for boiler efficiency and NOx discharge.
After have selected suitable boiler operating parameter, boiler efficiency and NOx discharge can be calculated by these boiler operating parameters.When carrying out this calculating, various ways can be adopted to realize, the present invention selects neutral net to calculate.Neutral net provided by the invention as shown in Figure 2, comprise input layer, hidden layer and output layer, the node value of input layer is boiler operating parameter, and the node value of output layer is boiler efficiency and NOx discharge, can there are weights in neutral net between each node.For neutral net structure and run can be realized by prior art, the present invention is no longer described in detail.
In order to carry out monitoring NOx discharge capacity, database server can receive the described boiler operating parameter and boiler efficiency that meet described coefficient correlation condition and described NOx discharge is sent to watch-dog, and corresponding data carry out showing or controlling accordingly by watch-dog.
By above-mentioned optimal control, the boiler operating parameter that can reduce NOx discharge can be obtained, when boiler efficiency and described NOx discharge do not meet default condition, then control appliance can adjust according to the boiler operating parameter of this boiler operating parameter to low-NOx combustor, thus realizes the optimization of NOx discharge.After being combined with SCR equipment, the NOx of discharge will enter SCR equipment and reduce.When SCR equipment reduces, need using ammonia as reducing agent, therefore need database server to calculate the ammonia consumption of SCR equipment needs according to described NOx discharge.Because the CONCENTRATION DISTRIBUTION of NOx in SCR equipment flue is uneven, therefore database server can be revised by the CONCENTRATION DISTRIBUTION of NOx in SCR equipment flue; The concrete technical scheme of correction liquefied ammonia consumption of the present invention has two, and one is according to specific reactor situation, the CONCENTRATION DISTRIBUTION field of analog computation NOx, adopts integral and calculating to deviate or modifying factor; Another is by setting up liquefied ammonia stock, consuming track database, adopts material balance principle to verify liquefied ammonia consumption in real time, guarantees that liquefied ammonia consumption is accurate.
Denitration efficiency is one of important indicator of denitrating system performance, and in order to reaction denitration efficiency exactly, database server can utilize at least one in NH3/NO mol ratio, flue-gas temperature, flue gas flow ratio and the escaping of ammonia rate to denitration efficiency correction.After SCR goes into operation, the major endogeneous affecting denitration efficiency is the activated state of catalyst, in view of ensureing that effective lifetime (being generally more than 30,000 hours) inner catalyst activity is in a stable attenuation process, it is gather SCR entrance relevant parameters in real time by acquisition module that the present invention calculates denitration efficiency basic scheme, outlet relevant parameters, and the escaping of ammonia situation, in conjunction with NH3/NO mol ratio, set up molecular balance equation, computational analysis in real time draws catalyst activity sexual state and corresponding denitration efficiency, this efficiency is exactly best denitration efficiency corresponding to SCR, operations staff will be instructed to adjust boiler in time, and the relevant operational factor of SCR, guarantee that boiler plant is in safety all the time, environmental protection, economical operation state.
The above-mentioned ammonia consumption calculated can be sent to watch-dog by database server, and control appliance can control the amount of the ammonia entering SCR equipment according to the ammonia consumption calculated.Similarly, the above-mentioned denitration efficiency calculated can also be sent to watch-dog for monitoring by database server.
Watch-dog provided by the present invention can be the terminal being provided with software, such as computer or work station.By the user interface that software can realize as described in Figure 3, be provided with many monitoring modulars on the surface, such as boiler efficiency monitoring modular M1, flue gas flow monitoring modular M2, air preheater pressure reduction monitoring modular M3, liquefied ammonia consumption monitoring modular M4, catalyst activity monitoring modular M5, the escaping of ammonia monitoring modular M6, deduster secondary current monitoring modular M7, pressure fan M8, air-introduced machine M9, dilution air M10, flue gas blender M11 etc., if database server sends over relevant data, data can be added up by software accordingly, after user clicks corresponding monitoring modular, can be shown by the mode of curve or numeral on screen in real time.
Below the preferred embodiment of the present invention is described in detail by reference to the accompanying drawings; but; the present invention is not limited to the detail in above-mentioned embodiment; within the scope of technical conceive of the present invention; can carry out multiple simple variant to technical scheme of the present invention, these simple variant all belong to protection scope of the present invention.
It should be noted that in addition, each the concrete technical characteristic described in above-mentioned detailed description of the invention, in reconcilable situation, can be combined by any suitable mode.In order to avoid unnecessary repetition, the present invention illustrates no longer separately to various possible combination.
In addition, also can be combined between various different embodiment of the present invention, as long as it is without prejudice to thought of the present invention, it should be considered as content disclosed in this invention equally.
Claims (18)
1. a fired power generating unit NOx emission method for supervising, is characterized in that, the method comprises:
Database server reads the boiler operating parameter in real-time data base;
Described database server calculates described boiler operating parameter and the coefficient correlation between boiler efficiency and NOx discharge, selects the described boiler operating parameter meeting coefficient correlation condition;
Described database server calculates described boiler efficiency and described NOx discharge according to the selected described boiler operating parameter meeting described coefficient correlation condition, and the described database server described boiler operating parameter that meets coefficient correlation condition by described and described boiler efficiency and described NOx discharge are sent to watch-dog to monitor;
Calculated described boiler efficiency and described NOx discharge ineligible time, described watch-dog according to the operational factor of described boiler operating parameter adjustment boiler meeting described boiler efficiency and described NOx discharge condition,
Wherein, described database server calculates the coefficient correlation between described boiler operating parameter and described boiler efficiency and the coefficient correlation between described boiler operating parameter and described NOx discharge comprises:
Described database server calculates the coefficient correlation between described boiler operating parameter and described boiler efficiency and the coefficient correlation between described boiler operating parameter and described NOx discharge according to following formula:
Wherein ρ
ijfor boiler operating parameter x
iwith boiler efficiency or NOx discharge y
jbetween coefficient correlation,
for boiler operating parameter x
iaverage,
for boiler efficiency or NOx discharge y
javerage, i, j are positive integer.
2. method according to claim 1, it is characterized in that, described boiler operating parameter comprises boiler load, main steam flow, main steam temperature, main steam pressure, feed temperature, feedwater flow, fuel quantity, air output, pressure fan electric current, absorbing quantity, air-introduced machine electric current, pressure fan baffle opening, air-introduced machine baffle opening, exhaust gas temperature, fire box temperature, hot blast temperature, primary air pressure, combustion chamber draft, secondary wind pressure, reheat temperature, desuperheating water of superheater amount, reheating spray water flux, coal pulverizer coal-supplying amount, secondary air damper aperture, primary air flow, coal pulverizer ventilation, enter the total coal amount of stove, and enter in stove total air at least both.
3. method according to claim 1, is characterized in that, the method also comprises:
Described database server reaches the described boiler operating parameter of rule rejecting abnormalities according to Rye.
4. method according to claim 1, is characterized in that, described database server selects the described boiler operating parameter meeting described coefficient correlation condition to comprise:
The described boiler operating parameter that described database server is selected the coefficient correlation between described boiler operating parameter and described boiler efficiency to be greater than the first preset value and the coefficient correlation between described boiler operating parameter and described NOx discharge to be greater than the second preset value.
5. method according to claim 1, is characterized in that, described database server calculates described boiler efficiency according to the selected described boiler operating parameter meeting described coefficient correlation condition and described NOx discharge comprises:
Described database server builds the neutral net comprising input layer, hidden layer and output layer;
Described database server will meet the node value of described boiler operating parameter as described input layer of described coefficient correlation condition;
Described database server goes out the value of described boiler efficiency as output layer node and described NOx discharge by described neural computing.
6. the method according to claim 1-5 any one, is characterized in that, the method also comprises:
Boiler operating parameter, described boiler efficiency and described NOx discharge described in described database server normalization.
7. the method according to claim 1-5 any one, is characterized in that, the method also comprises:
Described database server calculates the ammonia consumption of SCR equipment needs according to described NOx discharge.
8. method according to claim 7, is characterized in that, the method also comprises:
Described database server utilizes NH
3at least one correction denitration efficiency in/NO mol ratio, flue-gas temperature, flue gas flow ratio and the escaping of ammonia rate.
9. method according to claim 7, is characterized in that, the method also comprises:
Described database server utilizes wet flue gas flow correction ammonia consumption in the CONCENTRATION DISTRIBUTION of NOx in SCR equipment flue and/or SCR equipment flue.
10. a fired power generating unit NOx emission monitoring system, is characterized in that, this system comprises:
Real-time data base, for storing boiler operating parameter;
Database server, for reading the boiler operating parameter in real-time data base; Calculate described boiler operating parameter and the coefficient correlation between boiler efficiency and NOx discharge, select the described boiler operating parameter meeting coefficient correlation condition; And calculate described boiler efficiency and described NOx discharge according to the selected described boiler operating parameter meeting described coefficient correlation condition;
Watch-dog, for receive described database server send described in meet the described boiler operating parameter of coefficient correlation condition and described boiler efficiency and described NOx discharge to monitor; Calculated described boiler efficiency and described NOx discharge ineligible time, according to the operational factor of described boiler operating parameter adjustment boiler meeting described boiler efficiency and described NOx discharge condition,
Wherein, described database server is used for calculating the coefficient correlation between described boiler operating parameter and described boiler efficiency and the coefficient correlation between described boiler operating parameter and described NOx discharge according to following formula:
Wherein ρ
ijfor boiler operating parameter x
iwith boiler efficiency or NOx discharge y
jbetween coefficient correlation,
for boiler operating parameter x
iaverage,
for boiler efficiency or NOx discharge y
javerage, i, j are positive integer.
11. systems according to claim 10, it is characterized in that, boiler operating parameter comprises boiler load, main steam flow, main steam temperature, main steam pressure, feed temperature, feedwater flow, fuel quantity, air output, pressure fan electric current, absorbing quantity, air-introduced machine electric current, pressure fan baffle opening, air-introduced machine baffle opening, exhaust gas temperature, fire box temperature, hot blast temperature, primary air pressure, combustion chamber draft, secondary wind pressure, reheat temperature, desuperheating water of superheater amount, reheating spray water flux, coal pulverizer coal-supplying amount, secondary air damper aperture, primary air flow, coal pulverizer ventilation, enter the total coal amount of stove, and enter in stove total air at least both.
12. systems according to claim 10, is characterized in that, described database server is also for reaching the described boiler operating parameter of rule rejecting abnormalities according to Rye.
13. systems according to claim 12, it is characterized in that, the boiler operating parameter that described database server is greater than the second preset value for selecting the coefficient correlation between described boiler operating parameter and described boiler efficiency to be greater than the first preset value and the coefficient correlation between described boiler operating parameter and described NOx discharge.
14. systems according to claim 12, is characterized in that, described database server comprises the neutral net of input layer, hidden layer and output layer for building; The node value of described boiler operating parameter as input layer of described coefficient correlation condition will be met; The value of described boiler efficiency as output layer node and described NOx discharge is gone out by described neural computing.
15. systems according to claim 10-14 any one, is characterized in that, described database server is used for boiler operating parameter, described boiler efficiency and described NOx discharge described in normalization.
16. systems according to claim 10-14 any one, is characterized in that, described database server is used for calculating according to described NOx discharge the ammonia consumption that SCR equipment needs.
17. systems according to claim 16, is characterized in that, described database server is used for utilizing NH
3at least one correction denitration efficiency in/NO mol ratio, flue-gas temperature, flue gas flow ratio and the escaping of ammonia rate.
18. systems according to claim 16, is characterized in that, described database server is for utilizing wet flue gas flow correction ammonia consumption in the CONCENTRATION DISTRIBUTION of NOx in SCR equipment flue and/or SCR equipment flue.
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| CN106765021A (en) * | 2016-12-15 | 2017-05-31 | 吉林省电力科学研究院有限公司 | A kind of method of the after-flame factor and bellows differential pressure factor corrdinated adjustment boiler performance |
| CN108038561A (en) * | 2017-09-21 | 2018-05-15 | 南京航空航天大学 | A kind of Multipurpose Optimal Method of SCR denitration preformed catalyst |
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| CN109404071B (en) * | 2018-12-17 | 2021-04-13 | 广西电网有限责任公司电力科学研究院 | Identification method for pressurized water reactor steam generator model time constant |
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| CN111589301A (en) * | 2020-05-29 | 2020-08-28 | 广东电科院能源技术有限责任公司 | Method, device, equipment and storage medium for predicting SCR denitration performance of coal-fired power plant |
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|---|
| 《燃煤锅炉效率与NOX排放混合建模研究》;吕玉坤等;《电力科学与工程》;20120531;第37-41页 * |
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