CN114110616A - HCL concentration emission control method and HCL concentration emission control system for garbage incinerator - Google Patents
HCL concentration emission control method and HCL concentration emission control system for garbage incinerator Download PDFInfo
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- CN114110616A CN114110616A CN202111382553.4A CN202111382553A CN114110616A CN 114110616 A CN114110616 A CN 114110616A CN 202111382553 A CN202111382553 A CN 202111382553A CN 114110616 A CN114110616 A CN 114110616A
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- 238000000034 method Methods 0.000 title claims abstract description 33
- 239000002002 slurry Substances 0.000 claims abstract description 116
- 238000004364 calculation method Methods 0.000 claims abstract description 12
- 238000004422 calculation algorithm Methods 0.000 claims description 10
- 238000005457 optimization Methods 0.000 claims description 8
- 238000012821 model calculation Methods 0.000 claims description 7
- 238000013528 artificial neural network Methods 0.000 claims description 5
- 238000003064 k means clustering Methods 0.000 claims description 5
- 239000002245 particle Substances 0.000 claims description 5
- 238000002922 simulated annealing Methods 0.000 claims description 5
- 239000002699 waste material Substances 0.000 claims description 5
- 239000000126 substance Substances 0.000 claims 1
- VEXZGXHMUGYJMC-UHFFFAOYSA-N Hydrochloric acid Chemical compound Cl VEXZGXHMUGYJMC-UHFFFAOYSA-N 0.000 description 74
- 229910000041 hydrogen chloride Inorganic materials 0.000 description 74
- IXCSERBJSXMMFS-UHFFFAOYSA-N hydrogen chloride Substances Cl.Cl IXCSERBJSXMMFS-UHFFFAOYSA-N 0.000 description 74
- 230000007613 environmental effect Effects 0.000 description 4
- 238000010586 diagram Methods 0.000 description 3
- ZAMOUSCENKQFHK-UHFFFAOYSA-N Chlorine atom Chemical compound [Cl] ZAMOUSCENKQFHK-UHFFFAOYSA-N 0.000 description 2
- 239000000460 chlorine Substances 0.000 description 2
- 229910052801 chlorine Inorganic materials 0.000 description 2
- 230000007547 defect Effects 0.000 description 1
- 230000004069 differentiation Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000010354 integration Effects 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23G—CREMATION FURNACES; CONSUMING WASTE PRODUCTS BY COMBUSTION
- F23G5/00—Incineration of waste; Incinerator constructions; Details, accessories or control therefor
- F23G5/50—Control or safety arrangements
Abstract
The invention provides a method and a system for controlling HCL concentration emission of a garbage incinerator, wherein the control method comprises the following steps: establishing a database according to historical data of the incinerator; determining the HCL emission concentration within a preset HCL emission concentration range as a first HCL emission concentration; carrying out big data clustering on the slurry flow in the database by taking the first HCL discharge concentration as a center, and determining the slurry flow corresponding to each first HCL discharge concentration as a first slurry flow; establishing a model according to the first HCL discharge concentration and the first slurry flow; optimizing and solving each model coefficient of the model to obtain the value of each model coefficient; acquiring a proportion phi that HCL discharge concentration is smaller than a preset threshold value in the previous hour, and acquiring a slurry flow calculation compensation coefficient alpha according to a preset phi-alpha relation; and acquiring a target value of the slurry amount, and adjusting the real-time slurry flow according to the target value of the slurry. And establishing a calculation model of HCI discharge concentration and slurry flow to realize safe, environment-friendly and stable operation of the HCL discharge control of the incinerator.
Description
Technical Field
The invention relates to the technical field of control of garbage incinerators, in particular to a method and a system for controlling HCL (hydrogen chloride) concentration emission of a garbage incinerator.
Background
The HCL generation sources in the operation of the incinerator are mainly organic chlorine and inorganic chlorine in garbage components, but due to the fact that garbage characteristic changes are complex, component compositions of garbage entering the incinerator in each season, each month and even each moment are different to a certain degree, HCL generation concentration fluctuation is large, regularity is weak, manual control and traditional PID (proportion integration differentiation) are poor in deacidification control effect of the garbage incinerator, and material waste is serious.
Disclosure of Invention
The invention aims to overcome the defects and shortcomings in the prior art and provide a method and a system for controlling the HCL concentration discharge of a garbage incinerator.
One embodiment of the invention provides a method for controlling the emission of HCL concentration of a garbage incinerator, which comprises the following steps:
s1, establishing a database according to the historical data of the incinerator; wherein the historical data comprises HCL discharge concentration and slurry flow rate;
s2, determining the HCL emission concentration in the database within a preset HCL emission concentration range as a first HCL emission concentration; carrying out big data clustering on the slurry flow in the database by taking the first HCL discharge concentration as a center, and determining the slurry flow corresponding to each first HCL discharge concentration as a first slurry flow;
s3, establishing a model according to the first HCL discharge concentration and the first slurry flow;
wherein, YModel (model)Representing the first slurry flow rate, XHCLRepresenting the first HCL emission concentration, A, B, C and D are model coefficients;
s4, carrying out optimization solution on each model coefficient of the model to obtain the value of each model coefficient;
s5, obtaining the proportion phi of HCL discharge concentration smaller than a preset threshold value in the previous hour, and obtaining a slurry flow calculation compensation coefficient alpha according to a preset phi-alpha relation;
s6, obtaining a target value Y of the slurry amountTarget＝YModel (model)And x alpha, and adjusting the real-time slurry flow according to the target slurry value.
Compared with the prior art, the method for controlling the HCL concentration discharge of the garbage incinerator has the advantages that the database is built according to historical data, the model is built according to the relation between the HCL discharge concentration in the historical data and the slurry flow, the target value of the slurry amount is obtained according to the proportion phi with the HCL discharge concentration smaller than the preset threshold value in the previous hour and the slurry flow in the model, the real-time slurry flow is adjusted according to the target value of the slurry, and the safety, the economy, the environmental protection performance and the economy of control operation can be effectively improved.
Further, in S5, obtaining a slurry flow calculation compensation coefficient α according to a preset Φ - α relationship, includes the following steps:
if phi is greater than 0.95, alpha is 1;
if 0.90< Φ <0.95, α is 1.05;
if 0.85< phi <0.9, alpha is 1.1;
if 0.80< phi <0.85, alpha is 1.15;
if 0.75< Φ <0.80, α is 1.2;
if 0.70< phi <0.75, alpha is 1.4.
Further, if phi is less than 0.7, repeating the steps S1-S4, calculating model coefficients A, B, C and D, and obtaining an updated model.
Further, the preset HCL emission concentration range is 10mg/m3-45mg/m3At an interval of 5mg/m3。
Further, the historical data is data for at least one year. The accuracy in constructing the model is improved by improving the data volume of the historical data.
Further, the database is based on an enterprise DCS system, new data are continuously acquired, and old data exceeding the storage amount are deleted. And updating the old data with the new data in time so as to keep the accuracy of the obtained target value of the slurry.
Further, in step S2, with the first HCL discharge concentration as a center, performing big data clustering on the slurry flow rates in the database, and determining the slurry flow rate corresponding to each first HCL discharge concentration as a first slurry flow rate, which may be implemented by a vector machine, a K-means clustering method, or a neural network clustering method. And carrying out big data clustering by using a vector machine, a K-means clustering method or a neural network clustering method so as to obtain the slurry flow corresponding to the first HCL discharge concentration.
Further, in step S4, the model coefficients of the model are optimized to obtain values of the model coefficients, which may be implemented by a particle swarm algorithm or a simulated annealing algorithm. And optimizing and solving each model coefficient through a particle swarm algorithm or a simulated annealing algorithm to obtain each optimal model coefficient.
The invention also provides a system for controlling the HCL concentration discharge of the garbage incinerator, which comprises: the system comprises a database module, a data classification module, a model calculation module, a parameter optimization module, an output compensation module and a slurry valve PID module;
the database module is used for establishing a database according to historical data of the incinerator; wherein the historical data comprises HCL discharge concentration and slurry flow rate;
the data classification module is used for determining the HCL emission concentration in the database within a preset HCL emission concentration range as a first HCL emission concentration; carrying out big data clustering on the slurry flow in the database by taking the first HCL discharge concentration as a center, and determining the slurry flow corresponding to each first HCL discharge concentration as a first slurry flow;
the model calculation module is used for establishing a model according to the first HCL discharge concentration and the first slurry flow;
wherein, YModel (model)Representing the first slurry flow rate, XHCLRepresenting the first HCL emission concentration, A, B, C and D are model coefficients;
the parameter optimizing module is used for carrying out optimizing solution on each model coefficient of the model so as to obtain the value of each model coefficient;
the output compensation module is used for acquiring the proportion phi of HCL discharge concentration smaller than a preset threshold value in the previous hour, and acquiring a slurry flow calculation compensation coefficient alpha according to a preset phi-alpha relation;
the slurry valve PID module is used for obtaining a slurry amount target value YTarget＝YModel (model)And x alpha, and adjusting the real-time slurry flow according to the target slurry value.
Compared with the prior art, the system for controlling the HCL concentration discharge of the garbage incinerator can establish a database according to historical data, establish a model according to the relation between the HCL discharge concentration and the slurry flow in the historical data, and obtain a slurry amount target value according to the proportion phi and the slurry flow in the model, wherein the HCL discharge concentration in the previous hour is smaller than a preset threshold value, so that the real-time slurry flow can be adjusted according to the slurry target value, and the safety, the economy, the environmental protection and the economy of control operation can be effectively improved.
In order that the invention may be more clearly understood, specific embodiments thereof will be described hereinafter with reference to the accompanying drawings.
Drawings
Fig. 1 is a flowchart of a method for controlling the emission of HCL concentration in a garbage incinerator according to an embodiment of the present invention.
Fig. 2 is a logic diagram of a method for controlling emission of HCL concentration in a garbage incinerator according to an embodiment of the present invention.
Fig. 3 is a block diagram of a system for controlling the emission of HCL concentration from a garbage incinerator according to an embodiment of the present invention.
1. A database module; 2. a data classification module; 3. a model calculation module; 4. a parameter optimizing module; 5. an output compensation module; 6. a slurry valve PID module; 7. and a model updating module.
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 to 2, fig. 1 is a flowchart illustrating a method for controlling concentration emission of HCL from a garbage incinerator according to an embodiment of the present invention, and fig. 2 is a logic diagram illustrating a method for controlling concentration emission of HCL from a garbage incinerator according to an embodiment of the present invention, the method comprising the steps of:
s1, establishing a database according to the historical data of the incinerator; wherein the historical data comprises HCL discharge concentration and slurry flow rate;
s2, determining the HCL emission concentration in the database within a preset HCL emission concentration range as a first HCL emission concentration; carrying out big data clustering on the slurry flow in the database by taking the first HCL discharge concentration as a center, and determining the slurry flow corresponding to each first HCL discharge concentration as a first slurry flow;
s3, establishing a model according to the first HCL discharge concentration and the first slurry flow;
wherein, YModel (model)Representing the first slurry flow rate, XHCLRepresenting the first HCL emission concentration, A, B, C and D are model coefficients;
s4, carrying out optimization solution on each model coefficient of the model to obtain the value of each model coefficient;
s5, obtaining the proportion phi of HCL discharge concentration smaller than a preset threshold value in the previous hour, and obtaining a slurry flow calculation compensation coefficient alpha according to a preset phi-alpha relation;
wherein, the slurry flow calculation compensation coefficient alpha can also be directly input by a user.
S6, obtaining a target value Y of the slurry amountTarget＝YModel (model)And x alpha, and adjusting the real-time slurry flow according to the target slurry value.
Compared with the prior art, the method for controlling the HCL concentration discharge of the garbage incinerator has the advantages that the database is built according to historical data, the model is built according to the relation between the HCL discharge concentration in the historical data and the slurry flow, the target value of the slurry amount is obtained according to the proportion phi with the HCL discharge concentration smaller than the preset threshold value in the previous hour and the slurry flow in the model, the real-time slurry flow is adjusted according to the target value of the slurry, and the safety, the economy, the environmental protection performance and the economy of control operation can be effectively improved.
In a possible embodiment, in S5, obtaining the slurry flow calculation compensation coefficient α according to a preset Φ - α relationship includes the following steps:
if phi is greater than 0.95, alpha is 1;
if 0.90< Φ <0.95, α is 1.05;
if 0.85< phi <0.9, alpha is 1.1;
if 0.80< phi <0.85, alpha is 1.15;
if 0.75< Φ <0.80, α is 1.2;
if 0.70< phi <0.75, alpha is 1.4.
In one possible embodiment, if φ is less than 0.7, the steps S1-S4 are repeated, model coefficients A, B, C, D are calculated, and an updated model is obtained.
In one possible embodiment, the predetermined HCL emission concentration range is 10mg/m3-45mg/m3At an interval of 5mg/m3. At this time, the corresponding slurry flow rates are tabulated as follows:
| serial number | HCL emission concentration (mg/m)3) | Slurry flow (L/H) |
| 1 | 10 | 0.4 |
| 2 | 15 | 0.6 |
| 3 | 20 | 0.8 |
| 4 | 25 | 1 |
| 5 | 28 | 1.3 |
| 6 | 30 | 1.5 |
| 7 | 35 | 1.8 |
| 8 | 40 | 2.0 |
| 9 | 45 | 2.2 |
TABLE 1 correspondence between HCL discharge concentration and slurry flow
In one possible embodiment, the historical data is at least one year of data. The accuracy in constructing the model is improved by improving the data volume of the historical data.
In one possible embodiment, the database is based on an enterprise DCS system, continuously acquiring new data and deleting old data that exceeds the amount of storage. And updating the old data with the new data in time so as to keep the accuracy of the obtained target value of the slurry.
In a possible embodiment, in step S2, the slurry flow rates in the database are clustered by using the first HCL discharge concentration as a center, and the slurry flow rate corresponding to each first HCL discharge concentration is determined as the first slurry flow rate, which may be implemented by a vector machine, a K-means clustering method, or a neural network clustering method. And carrying out big data clustering by using a vector machine, a K-means clustering method or a neural network clustering method so as to obtain the slurry flow corresponding to the first HCL discharge concentration.
In a possible embodiment, in step S4, the model coefficients of the model are optimally solved to obtain values of the model coefficients, which may be implemented by a particle swarm algorithm or a simulated annealing algorithm. And optimizing and solving each model coefficient through a particle swarm algorithm or a simulated annealing algorithm to obtain each optimal model coefficient.
For example, after the model is optimized according to the data in table 1, a is 0.03, B is 1.2, C is 0.03, and D is 0.10, so the expression of the model is:
referring to fig. 3, the present invention further provides a system for controlling HCL concentration discharge of a garbage incinerator, comprising: the system comprises a database module 1, a data classification module 2, a model calculation module 3, a parameter optimization module 4, an output compensation module 5 and a slurry valve PID module 6;
the database module 1 is used for establishing a database according to historical data of the incinerator; wherein the historical data comprises HCL discharge concentration and slurry flow rate;
the data classification module 2 is used for determining the HCL emission concentration in the database within a preset HCL emission concentration range as a first HCL emission concentration; carrying out big data clustering on the slurry flow in the database by taking the first HCL discharge concentration as a center, and determining the slurry flow corresponding to each first HCL discharge concentration as a first slurry flow;
the model calculation module 3 is used for establishing a model according to the first HCL discharge concentration and the first slurry flow;
wherein, YModel (model)Representing the first slurry flow rate, XHCLRepresenting the first HCL emission concentration, A, B, C and D are model coefficients;
the parameter optimizing module 4 is configured to perform optimizing solution on each model coefficient of the model to obtain a value of each model coefficient;
the output compensation module 5 is used for acquiring the proportion phi of HCL discharge concentration smaller than a preset threshold value in the previous hour, and acquiring a slurry flow calculation compensation coefficient according to a preset phi-relation;
if phi is greater than 0.95, 1;
if 0.90< Φ <0.95, 1.05;
if 0.85< Φ <0.9, ═ 1.1;
if 0.80< Φ <0.85, ═ 1.15;
if 0.75< Φ <0.80, ═ 1.2;
if 0.70< Φ <0.75, ═ 1.4.
The slurry valve PID module 6 is configured to obtain a target value of slurry amount, target Y ═ Y model × α, and adjust the real-time slurry flow rate according to the target value of slurry.
Preferably, the model updating module 7 is further included, the model updating module 7 statistically calculates the proportion phi of the HCL <50mg/m3 in the previous hour on line, if phi is less than 0.7, the model updating starts, the processes of data acquisition, data classification, parameter optimization and the like are completed, the updated model parameters are obtained, and the parameters are assigned to the model calculating module 3.
Compared with the prior art, the system for controlling the HCL concentration discharge of the garbage incinerator can establish a database according to historical data, establish a model according to the relation between the HCL discharge concentration and the slurry flow in the historical data, and obtain a slurry amount target value according to the proportion phi and the slurry flow in the model, wherein the HCL discharge concentration in the previous hour is smaller than a preset threshold value, so that the real-time slurry flow can be adjusted according to the slurry target value, and the safety, the economy, the environmental protection and the economy of control operation can be effectively improved.
In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like, indicate orientations or positional relationships based on those shown in the drawings, and are used only for convenience in describing the present invention and for simplicity in description, and do not indicate or imply that the referenced devices or elements must have a particular orientation, be constructed and operated in a particular orientation, and thus, are not to be construed as limiting the present invention. In the description of the present invention, "a plurality" means two or more unless otherwise specified.
The above-mentioned embodiments only express several embodiments of the present invention, and the description thereof is more specific and detailed, but not construed as limiting the scope of the invention. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the inventive concept, which falls within the scope of the present invention.
Claims (9)
1. A method for controlling HCL concentration discharge of a garbage incinerator is characterized by comprising the following steps:
s1, establishing a database according to the historical data of the incinerator; wherein the historical data comprises HCL discharge concentration and slurry flow rate;
s2, determining the HCL emission concentration in the database within a preset HCL emission concentration range as a first HCL emission concentration; carrying out big data clustering on the slurry flow in the database by taking the first HCL discharge concentration as a center, and determining the slurry flow corresponding to each first HCL discharge concentration as a first slurry flow;
s3, establishing a model according to the first HCL discharge concentration and the first slurry flow;
wherein the content of the first and second substances,
is representative of the flow rate of the first slurry,
representing the first HCL emission concentration, A, B, C and D are model coefficients;
s4, carrying out optimization solution on each model coefficient of the model to obtain the value of each model coefficient;
s5, obtaining the proportion phi of HCL discharge concentration smaller than a preset threshold value in the previous hour, and obtaining a slurry flow calculation compensation coefficient alpha according to a preset phi-alpha relation;
and S6, acquiring a target value of the slurry amount, and adjusting the real-time slurry flow according to the target value of the slurry.
2. The refuse incinerator HCL concentration discharge control method according to claim 1, wherein said step of obtaining slurry flow calculation compensation factor according to a preset phi-relationship in S5, comprises the steps of:
if phi is greater than 0.95, = 1;
if 0.90< phi <0.95, = 1.05;
if 0.85< Φ <0.9, = 1.1;
if 0.80< Φ <0.85, = 1.15;
if 0.75< Φ <0.80, = 1.2;
if 0.70< phi <0.75, = 1.4.
3. The refuse incinerator HCL concentration discharge control method according to claim 2, wherein if Φ <0.7, repeating said steps S1-S4, calculating model coefficients a, B, C, D, and obtaining an updated model.
4. The method of controlling emission of HCL concentration in a waste incinerator according to claim 1, characterized in that: the preset HCL emission concentration range is 10mg/m3-45 mg/m3, and the interval is 5mg/m 3.
5. The method of controlling emission of HCL concentration in a waste incinerator according to claim 1, characterized in that: the historical data is data of at least one year.
6. The method of controlling emission of HCL concentration in a waste incinerator according to claim 1, characterized in that: and the database is based on the enterprise DCS system, continuously acquires new data and deletes old data exceeding the storage amount.
7. The method of controlling emission of HCL concentration in a waste incinerator according to claim 1, characterized in that: in step S2, with the first HCL discharge concentration as a center, performing big data clustering on the slurry flow rates in the database, and determining the slurry flow rate corresponding to each first HCL discharge concentration as a first slurry flow rate, which may be implemented by a vector machine, a K-means clustering method, or a neural network clustering method.
8. The method for controlling emission of HCL concentration from a refuse incinerator according to claim 1, wherein in step S4, the model coefficients of the model are optimized to obtain the values of the model coefficients, and the optimization can be achieved by a particle swarm algorithm or a simulated annealing algorithm.
9. A refuse incinerator HCL concentration emission control system characterized by comprising: the system comprises a database module, a data classification module, a model calculation module, a parameter optimization module, an output compensation module and a slurry valve PID module;
the database module is used for establishing a database according to historical data of the incinerator; wherein the historical data comprises HCL discharge concentration and slurry flow rate;
the data classification module is used for determining the HCL emission concentration in the database within a preset HCL emission concentration range as a first HCL emission concentration; carrying out big data clustering on the slurry flow in the database by taking the first HCL discharge concentration as a center, and determining the slurry flow corresponding to each first HCL discharge concentration as a first slurry flow;
the model calculation module is used for establishing a model according to the first HCL discharge concentration and the first slurry flow;
wherein representing the first slurry flow rate, representing the first HCL discharge concentration, A, B, C and D are model coefficients;
the parameter optimizing module is used for carrying out optimizing solution on each model coefficient of the model so as to obtain the value of each model coefficient;
the output compensation module is used for acquiring the proportion phi of HCL discharge concentration smaller than a preset threshold value in the previous hour, and acquiring a slurry flow calculation compensation coefficient according to a preset phi-relation;
and the slurry valve PID module is used for obtaining a target value Ytarget = Y model multiplied by alpha of the slurry amount and adjusting the real-time slurry flow according to the target value of the slurry amount.
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