Method and system for judging maturity of coke in coke oven

Abstract

The invention discloses a method and system for judging the maturity of coke in a coke oven, and the method comprises the steps: obtaining a current heating strategy of the coke oven, and determining the representation characteristics and heating condition parameters of the coke in each stage when the coke is coked in the coke oven according to the current heating strategy; determining a theoretical maturation stage of the coke based on the heating condition parameters, the representation characteristics and the maturation mark indexes of the coke, and collecting coking coal data in the theoretical maturation stage; determining a pyrolysis degree index of the coking coal according to the coking coal data, and determining a material maturity value of the coke through a preset coking coal maturity prediction model based on the pyrolysis degree index; according to the method, the smoke state parameters in the theoretical maturity stage are detected, the environment-friendly maturity value of the coke is determined according to the smoke state parameters, the coke maturity is comprehensively judged according to the environment-friendly maturity value and the material maturity value, and the coking maturity of the coke can be objectively, rapidly and accurately evaluated according to the combustion attribute and the sample coking data. And the reliability and the high precision of the evaluation result are improved.

Description

Technical Field

[0001] The present invention relates to the technical field, and in particular to a method and system for determining the maturity of coke in a coke oven. Background Art

[0002] Coke oven coking is the core process for the efficient conversion of coke resources. Its core goal is to achieve the best maturity of coke (especially coking coal) by precisely controlling the coking process, so as to ensure that the coke quality (such as strength, reactivity) meets the metallurgical requirements. Traditional determination methods rely on empirical parameters and off-line detection, and are subjectively judged by artificial visual observation such as the color of the furnace top flame and the smoking condition of the coal charging hole, and cannot be quantitatively determined. There are problems such as poor real-time performance, insufficient accuracy, resulting in energy waste, coke quality fluctuations and excessive pollutant emissions. There is an urgent need for an online, intelligent and high-precision technology for determining the maturity of coke in a coke oven to optimize process control and reduce the environmental load. Summary of the Invention

[0003] In view of the problems shown above, the present invention provides a method and system for determining the maturity of coke in a coke oven to solve the problems in the background art that the traditional determination method relies on empirical parameters and off-line detection, and is subjectively judged by artificial visual observation such as the color of the furnace top flame and the smoking condition of the coal charging hole, and cannot be quantitatively determined. There are problems such as poor real-time performance, insufficient accuracy, resulting in energy waste, coke quality fluctuations and excessive pollutant emissions.

[0004] A method for determining the maturity of coke in a coke oven includes the following steps:

[0005] Obtain the current heating strategy of the coke oven, and determine the appearance characteristics and heating condition parameters at each stage when the coke is coked in the coke oven according to the current heating strategy;

[0006] Based on the heating condition parameters, appearance characteristics and maturity marking indexes of the coke, determine the theoretical maturity stage of the coke, and collect coking coal data at the theoretical maturity stage;

[0007] Determine the pyrolysis degree index of the coking coal according to the coking coal data, and determine the material maturity value of the coke based on the pyrolysis degree index through a preset coking coal maturity prediction model;

[0008] Detect the smoke state parameters at the theoretical maturity stage, determine the environmental protection maturity value of the coke according to the smoke state parameters, and comprehensively determine the maturity of the coke according to the environmental protection maturity value and the material maturity value.

[0009] Preferably, the step of obtaining the current heating strategy of the coke oven and determining the appearance characteristics and heating condition parameters at each stage when the coke is coked in the coke oven according to the current heating strategy includes:

[0010] Determine the current heating mode of the coke oven, obtain the temperature and pressure change parameters under the current heating mode, and determine the current heating strategy based on the temperature and pressure change parameters;

[0011] Determine the physical and chemical stages that the coke undergoes during the coking process in the coke oven according to the current heating strategy, and obtain the temperature requirements and heating rate parameters for each physical and chemical stage;

[0012] Determine the heating condition parameters for the coke under each physical and chemical stage according to the temperature requirements and heating rate parameters;

[0013] Obtain the state change characteristics of the coke under each physical and chemical stage and determine the appearance characteristics of the coke under each physical and chemical stage based on its physical or chemical reaction parameters under each physical and chemical stage.

[0014] Preferably, determine the theoretical maturity stage of the coke based on the heating condition parameters, appearance characteristics, and maturity marker indicators of the coke, and collect coking coal data at the theoretical maturity stage, including:

[0015] Determine the morphological change parameters of the coke at each stage according to the heating condition parameters and appearance characteristics, and determine the coking progress of the coke at each stage according to the morphological change parameters;

[0016] Determine the current maturity indicators of the coke at each stage according to the coking progress, obtain mature coke samples and conduct measurements, and obtain the maturity marker indicators according to the measurement results;

[0017] Match the current maturity indicators of the coke at each stage with the maturity marker indicators of the mature coke samples, and confirm the target stage with the highest matching degree as the theoretical maturity stage of the coke;

[0018] Collect coking samples of the coke at the theoretical maturity stage, and analyze the coking samples of the coke to obtain coking coal data.

[0019] Preferably, determine the pyrolysis degree index of the coking coal according to the coking coal data, and determine the material maturity value of the coke based on the pyrolysis degree index through a preset coking coal maturity prediction model, including:

[0020] Determine multiple pyrolysis products during the coking process of the coke and the concentration data of each pyrolysis product according to the coking coal data;

[0021] Determine the pyrolysis degree index of the coking coal according to the multiple pyrolysis products and the concentration data of each pyrolysis product, and construct a preset coking coal maturity prediction model based on historical data and machine learning algorithms;

[0022] Determine the current mapping relationship between the pyrolysis degree index and the preset coking coal maturity prediction model, and determine the maturity value of the coke according to the current mapping relationship;

[0023] Collect the sample image of coke at the theoretically mature stage, extract the coking characteristics of coke according to the sample image, and determine the material maturity value of coke according to the maturity value and coking characteristics of coke.

[0024] Preferably, detect the smoke state parameters at the theoretically mature stage, determine the environmental protection maturity value of coke according to the smoke state parameters, and comprehensively judge the maturity of coke according to the environmental protection maturity value and the material maturity value, including:

[0025] Determine the existence form of each gas component during the coking process of coke, determine the detection method according to the existence form, and detect each gas component and its concentration through the detection method;

[0026] Determine the smoke state parameters according to the detected gas components and their concentrations, determine the environmental impact factor based on the smoke state parameters, and determine the environmental protection maturity value of coke according to the environmental impact factor;

[0027] Calculate the comprehensive maturity of coke according to the environmental protection maturity value, the material maturity value and their respective weights, and confirm whether the comprehensive maturity meets the standard;

[0028] If not, determine the harmful gas volatilization trend when coke continues to coke according to the environmental protection maturity value, determine the coking continuation duration according to the harmful gas volatilization trend, and continue to coke the coke based on the coking continuation duration until the comprehensive maturity meets the standard.

[0029] A system for judging the maturity of coke in a coke oven, the system includes:

[0030] The first determination module is used to obtain the current heating strategy of the coke oven and determine the appearance characteristics and heating condition parameters of each stage when coke cokes in the coke oven according to the current heating strategy;

[0031] The second determination module is used to determine the theoretically mature stage of coke based on the heating condition parameters, appearance characteristics and maturity marking indexes of coke, and collect the coking coal data at the theoretically mature stage;

[0032] The third determination module is used to determine the pyrolysis degree index of coking coal according to the coking coal data, and determine the material maturity value of coke based on the pyrolysis degree index through a preset coking coal maturity prediction model;

[0033] The judgment module is used to detect the smoke state parameters at the theoretically mature stage, determine the environmental protection maturity value of coke according to the smoke state parameters, and comprehensively judge the maturity of coke according to the environmental protection maturity value and the material maturity value.

[0034] Preferably, the first determination module includes:

[0035] The first determination sub-module is used to determine the current heating mode of the coke oven, obtain the temperature and pressure change parameters under the current heating mode, and determine the current heating strategy according to the temperature and pressure change parameters;

[0036] The second determination sub-module is used to determine the physical and chemical stages experienced by the coke during the coking process in the coke oven according to the current heating strategy, and obtain the temperature requirements and heating rate parameters for each physical and chemical stage;

[0037] The third determination sub-module is used to determine the heating condition parameters of the coke under each physical and chemical stage according to the temperature requirements and heating rate parameters;

[0038] The fourth determination sub-module is used to obtain the state change characteristics of the coke under each physical and chemical stage and determine the appearance characteristics of the coke under each physical and chemical stage according to its physical or chemical reaction parameters under each physical and chemical stage of the coke.

[0039] Preferably, the second determination module includes:

[0040] The fifth determination sub-module is used to determine the morphological change parameters of the coke in each stage according to the heating condition parameters and appearance characteristics, and determine the coking progress of the coke in each stage according to the morphological change parameters;

[0041] The measurement sub-module is used to determine the current maturity index of the coke in each stage according to the coking progress, obtain a mature coke sample and conduct measurements, and obtain the mature marker index according to the measurement results;

[0042] The matching sub-module is used to match the current maturity index of the coke in each stage with the mature marker index of the mature coke sample, and confirm the target stage with the highest matching degree as the theoretical mature stage of the coke;

[0043] The analysis sub-module is used to collect the coke coking samples in the theoretical mature stage, and analyze the coke coking samples to obtain coking coal data.

[0044] Preferably, the third determination module includes:

[0045] The sixth determination sub-module is used to determine multiple pyrolysis products of the coking coal during the coking process and the concentration data of each pyrolysis product according to the coking coal data;

[0046] The construction sub-module is used to determine the pyrolysis degree index of the coking coal according to multiple pyrolysis products and the concentration data of each pyrolysis product, and construct a preset coking coal maturity prediction model based on historical data and machine learning algorithms;

[0047] The seventh determination sub-module is used to determine the current mapping relationship between the pyrolysis degree index and the preset coking coal maturity prediction model, and determine the maturity value of the coke according to the current mapping relationship;

[0048] The eighth determination sub-module is used to collect the sample image of the coke in the theoretical maturity stage, extract the coking characteristics of the coke according to the sample image, and determine the material maturity value of the coke according to the maturity value and coking characteristics of the coke.

[0049] Preferably, the determination module includes:

[0050] The detection sub-module is used to determine the existence form of each gas component during the coking process of the coke, determine the detection method according to the existence form, and detect each gas component and its concentration through the detection method;

[0051] The ninth determination sub-module is used to determine the smoke state parameter according to the detected gas component and its concentration, determine the environmental impact factor based on the smoke state parameter, and determine the environmental protection maturity value of the coke according to the environmental impact factor;

[0052] The calculation sub-module is used to calculate the comprehensive maturity of the coke according to the environmental protection maturity value, the material maturity value and their respective weights, and confirm whether the comprehensive maturity meets the standard;

[0053] The tenth determination sub-module is used to, if not, determine the harmful gas volatilization trend when the coke continues to coke according to the environmental protection maturity value, determine the coking continuation duration according to the harmful gas volatilization trend, and continue to coke the coke based on the coking continuation duration until the comprehensive maturity meets the standard.

[0054] Other features and advantages of the present invention will be described in the following specification, and part of them will become obvious from the specification, or be understood by implementing the present invention. The objectives and other advantages of the present invention can be achieved and obtained through the structures specifically pointed out in the written specification and the drawings.

[0055] The technical solution of the present invention will be further described in detail below through the drawings and embodiments. Description of the Drawings

[0056] The drawings are used to provide a further understanding of the present invention, and constitute a part of the specification. They are used to explain the present invention together with the embodiments of the present invention, and do not constitute a limitation to the present invention.

[0057] Figure 1 It is a working flow chart of a method for determining the maturity of coke in a coke oven provided by the present invention;

[0058] Figure 2 It is another working flow chart of a method for determining the maturity of coke in a coke oven provided by the present invention;

[0059] Figure 3 Structural schematic diagram of a coke maturity determination system provided by the present invention in a coke oven;

[0060] Figure 4 Structural schematic diagram of the determination module in a coke maturity determination system provided by the present invention in a coke oven. Detailed implementation manners

[0061] Here, the exemplary embodiments will be described in detail, and the examples are shown in the drawings. When the following description refers to the drawings, unless otherwise indicated, the same numbers in different drawings represent the same or similar elements. The implementation manners described in the following exemplary embodiments do not represent all implementation manners consistent with the present disclosure. On the contrary, they are merely examples of devices and methods consistent with some aspects of the present disclosure as detailed in the appended claims.

[0062] Coke making in a coke oven is the core process for the efficient conversion of coke resources. Its core goal is to make the coke (especially coking coal) reach the optimal maturity by precisely controlling the coking process, so as to ensure that the coke quality (such as strength, reactivity) meets the metallurgical requirements. Traditional determination methods rely on empirical parameters and off-line detection, and subjectively observe through manual visual inspection such as the color of the furnace top flame and the smoke situation at the coal charging hole, which is highly subjective and cannot be quantitatively determined. There are problems such as poor real-time performance, insufficient accuracy, resulting in energy waste, fluctuations in coke quality, and excessive pollutant emissions. To solve the above problems, this embodiment discloses a method for determining the maturity of coke in a coke oven from multiple aspects based on intelligent model prediction.

[0063] A method for determining the maturity of coke in a coke oven, as Figure 1 shown, includes the following steps:

[0064] Step S101: Obtain the current heating strategy of the coke oven, and determine the appearance characteristics and heating condition parameters of each stage when the coke is coked in the coke oven according to the current heating strategy;

[0065] Step S102: Determine the theoretical maturity stage of the coke based on the heating condition parameters, appearance characteristics, and maturity marking indicators of the coke, and collect the coking coal data at the theoretical maturity stage;

[0066] Step S103: Determine the pyrolysis degree index of the coking coal according to the coking coal data, and determine the material maturity value of the coke based on the pyrolysis degree index through a preset coking coal maturity prediction model;

[0067] Step S104: Detect the smoke state parameters at the theoretical maturity stage, determine the environmental protection maturity value of the coke according to the smoke state parameters, and comprehensively determine the maturity of the coke according to the environmental protection maturity value and the material maturity value.

[0068] In this embodiment, each stage includes:

[0069] Stage 1: Drying stage;

[0070] Appearance characteristics: Moisture on the surface of the coke evaporates, and the temperature gradually rises.

[0071] Heating condition parameters: Temperature: 100°C - 200°C, Heating rate: Slowly raise the temperature to avoid rapid heating causing coke cracking.

[0072] Stage 2: Pyrolysis stage;

[0073] Appearance characteristics: The coke begins to pyrolyze, releasing volatile components, producing tar and gas.

[0074] Heating condition parameters: Temperature: 200°C - 500°C, Heating rate: Medium heating rate to ensure sufficient pyrolysis.

[0075] Stage 3: Condensation polymerization stage;

[0076] Appearance characteristics: The organic substances in the coke further condense to form semi-coke.

[0077] Heating condition parameters: Temperature: 500°C - 800°C, Heating rate: Relatively fast heating rate to promote the condensation polymerization reaction.

[0078] Stage 4: Coke formation stage;

[0079] Appearance characteristics: The semi-coke is further converted into coke, and the structure becomes densified.

[0080] Heating condition parameters: Temperature: 800°C - 1000°C, Heating rate: Maintain at high temperature to ensure the quality of the coke.

[0081] The working principle of the above technical solution is as follows: Obtain the current heating strategy of the coke oven, determine the appearance characteristics and heating condition parameters of each stage when the coke is coked in the coke oven according to the current heating strategy; determine the theoretical maturity stage of the coke based on the heating condition parameters, appearance characteristics and the maturity marking index of the coke, and collect the coking coal data at the theoretical maturity stage; determine the pyrolysis degree index of the coking coal according to the coking coal data, and determine the material maturity value of the coke based on the pyrolysis degree index through a preset coking coal maturity prediction model; detect the smoke state parameters at the theoretical maturity stage, determine the environmental protection maturity value of the coke according to the smoke state parameters, and comprehensively judge the coke maturity according to the environmental protection maturity value and the material maturity value.

[0082] The beneficial effects of the above technical solution are as follows: By determining the theoretical maturity stage of coke according to the heating strategy, the maturity stage can be roughly predicted based on the combustion temperature parameter, and then the coking coal data at the corresponding stage can be collected to determine the material maturity value and environmental protection maturity value through the intelligent model. The coking maturity of coke can be quickly and accurately evaluated objectively based on the combustion properties and sample coking data, improving the reliability and high precision of the evaluation results, and solving the problems mentioned in the prior art that the traditional determination method relies on empirical parameters and off-line detection, and the subjective judgment is strong through artificial visual observation such as the color of the furnace top flame and the smoke situation of the coal charging hole, and it cannot be quantitatively determined. There are problems of poor real-time performance, insufficient accuracy, resulting in energy waste, fluctuations in coke quality, and excessive pollutant emissions.

[0083] In this embodiment, after determining the appearance characteristics and heating condition parameters at each stage when the coke is coked in the coke oven, it further includes:

[0084] Determine the initial combustion maturity curve of the coke at each stage according to the appearance characteristics and heating condition parameters at each stage;

[0085] Obtain the reaction characteristic system at each stage, and determine the maturity influencing factors and the influence weights of each influencing factor according to the reaction characteristic system;

[0086] Determine the correction parameter based on multiple influencing factors and the influence weights of each influencing factor, and correct the initial combustion maturity curve at each stage according to the correction parameter to obtain the target combustion maturity curve;

[0087] Determine the maturity label at each stage when the coke is coked in the coke oven based on the target combustion maturity curve, and determine the coke maturity decision index at each stage according to the maturity label;

[0088] Determine the decision elements corresponding to each coke maturity decision index, and determine the mutual qualitative relationship between the decision elements based on the decision elements according to the analytic hierarchy process;

[0089] Determine the quantitative conversion rule between the decision elements according to the qualitative relationship between the decision elements, and determine the vector response value of other decision elements under the fixed value of a single decision element vector based on the quantitative conversion rule;

[0090] Determine the basic decision element and high-order decision element of the maturity at each stage according to the vector response value of other decision elements under the fixed value of a single decision element vector;

[0091] Determine the decision behavior parameters of the basic decision element and the high-order decision element respectively, and formulate the maturity evaluation rule at each stage when the coke is coked in the coke oven according to the decision behavior parameters;

[0092] Determine the maturity indexes of each stage during the coking of coke in the coke oven according to the maturity evaluation rules, and use the maturity indexes as comparison indexes to compare with the maturity marking indexes of the coke to determine the theoretical maturity stage of the coke.

[0093] The beneficial effects of the above technical solution are as follows: By formulating the maturity evaluation rules for each stage during the coking of coke in the coke oven, the maturity indexes of each stage during the coking of coke in the coke oven can be accurately determined according to the reaction characteristics and maturity decision indexes of each stage of the coke, thereby laying a foundation for subsequent maturity evaluation and improving the practicability and stability.

[0094] In one embodiment, as Figure 2 shown, obtain the current heating strategy of the coke oven, and determine the appearance characteristics and heating condition parameters of each stage during the coking of coke in the coke oven according to the current heating strategy, including:

[0095] Step S201: Determine the current heating mode of the coke oven, obtain the temperature and pressure change parameters under the current heating mode, and determine the current heating strategy according to the temperature and pressure change parameters;

[0096] Step S202: Determine the physical and chemical stages experienced by the coke during the coking process in the coke oven according to the current heating strategy, and obtain the temperature requirements and heating rate parameters of each physical and chemical stage;

[0097] Step S203: Determine the heating condition parameters of the coke under each physical and chemical stage according to the temperature requirements and heating rate parameters;

[0098] Step S204: Obtain the state change characteristics of the coke under each physical and chemical stage and determine the appearance characteristics of the coke under each physical and chemical stage according to its physical or chemical reaction parameters under each physical and chemical stage.

[0099] The beneficial effects of the above technical solution are as follows: By determining each physical and chemical stage and their respective temperature requirements and heating rate parameters to determine the heating condition parameters, reasonable heating condition parameters can be configured based on the combustion heating requirements of each physical and chemical stage, thereby ensuring stability within each physical and chemical stage. Further, by determining the appearance characteristics according to the state change characteristics and reaction parameters of the coke, the appearance characteristics can be accurately determined from the perspective of the mapping between the morphology and reaction changes, ensuring the reliability, reference value, and actual compliance of the obtained characteristics.

[0100] In one embodiment, determine the theoretical maturity stage of the coke based on the heating condition parameters, appearance characteristics, and maturity marking indexes of the coke, and collect the coking coal data under the theoretical maturity stage, including:

[0101] Determine the morphological change parameters of coke at each stage according to the heating condition parameters and surface characteristics, and determine the coking progress of coke at each stage according to the morphological change parameters;

[0102] Determine the current maturity index of coke at each stage according to the coking progress, obtain mature coke samples and conduct measurements, and obtain the mature marking index according to the measurement results;

[0103] Match the current maturity index of coke at each stage with the mature marking index of the mature coke sample, and confirm the target stage with the highest matching degree as the theoretical mature stage of coke;

[0104] Collect coke coking samples at the theoretical mature stage, and analyze the coke coking samples to obtain coking coal data.

[0105] The beneficial effects of the above technical solution are: By determining the theoretical mature stage in the way of index matching, the coking mature stage of coke can be quickly determined according to the index change parameters, improving the accuracy and efficiency of determination.

[0106] In one embodiment, determining the pyrolysis degree index of coking coal according to the coking coal data, and determining the material maturity value of coke based on the pyrolysis degree index through a preset coking coal maturity prediction model includes:

[0107] Determine multiple pyrolysis products of coke during the coking process and the concentration data of each pyrolysis product according to the coking coal data;

[0108] Determine the pyrolysis degree index of coking coal according to multiple pyrolysis products and the concentration data of each pyrolysis product, and construct a preset coking coal maturity prediction model based on historical data and machine learning algorithms;

[0109] Determine the current mapping relationship between the pyrolysis degree index and the preset coking coal maturity prediction model, and determine the maturity value of coke according to the current mapping relationship;

[0110] Collect sample images of coke at the theoretical mature stage, extract the coking characteristics of coke according to the sample images, and determine the material maturity value of coke according to the maturity value and coking characteristics of coke.

[0111] The beneficial effects of the above technical solution are: By determining the material maturity value of coke according to the pyrolysis degree index combined with the intelligent maturity prediction model, the maturity can be quickly predicted according to the basic pyrolysis reaction of coke, improving the prediction accuracy. Further, by conducting synchronous evaluation according to the sample images, the accuracy and reliability of maturity evaluation can be more accurately controlled, improving the practicality.

[0112] In one embodiment, the method for detecting the smoke state parameters at the theoretical maturity stage, determining the environmental protection maturity value of coke according to the smoke state parameters, and comprehensively judging the maturity of coke according to the environmental protection maturity value and the material maturity value includes:

[0113] Determine the existence forms of various gas components during the coking process of coke, determine the detection method according to the existence forms, and detect various gas components and their concentrations through the detection method;

[0114] Determine the smoke state parameters according to the detected gas components and their concentrations, determine the environmental impact factor based on the smoke state parameters, and determine the environmental protection maturity value of coke according to the environmental impact factor;

[0115] Calculate the comprehensive maturity of coke according to the environmental protection maturity value, the material maturity value, and their respective weights, and confirm whether the comprehensive maturity meets the standard;

[0116] If not, determine the harmful gas volatilization trend when the coke continues to be coked according to the environmental protection maturity value, determine the coking continuation duration according to the harmful gas volatilization trend, and continue to coke the coke based on the coking continuation duration until the comprehensive maturity meets the standard.

[0117] The beneficial effects of the above technical solution are as follows: Through dual evaluation, both the material maturity can be ensured and the environmental protection form can be emphasized, ensuring the pollution-free and safety of coke after coking, improving the stability. Further, by continuing to coke the coke to remove harmful gases, the environmental protection can be further ensured, and at the same time, the coking maturity of coke can be maximally ensured.

[0118] In one embodiment, this embodiment also discloses a system for determining the maturity of coke in a coke oven, as Figure 3 shown. The system includes:

[0119] A first determination module 301, configured to obtain the current heating strategy of the coke oven, and determine the appearance characteristics and heating condition parameters of each stage when the coke is coked in the coke oven according to the current heating strategy;

[0120] A second determination module 302, configured to determine the theoretical maturity stage of the coke based on the heating condition parameters, the appearance characteristics, and the maturity marking index of the coke, and collect the coking coal data at the theoretical maturity stage;

[0121] A third determination module 303, configured to determine the pyrolysis degree index of the coking coal according to the coking coal data, and determine the material maturity value of the coke based on the pyrolysis degree index through a preset coking coal maturity prediction model;

[0122] The determination module 304 is configured to detect the smoke state parameters in the theoretically mature stage, determine the environmental protection maturity value of the coke according to the smoke state parameters, and comprehensively determine the coke maturity according to the environmental protection maturity value and the material maturity value.

[0123] The working principle and beneficial effects of the above technical solution have been described in the method embodiment and will not be elaborated here.

[0124] In one embodiment, the first determination module includes:

[0125] The first determination sub-module is configured to determine the current heating mode of the coke oven, obtain the temperature and pressure change parameters in the current heating mode, and determine the current heating strategy according to the temperature and pressure change parameters;

[0126] The second determination sub-module is configured to determine the physical and chemical stages experienced by the coke during the coking process in the coke oven according to the current heating strategy, and obtain the temperature requirements and heating rate parameters for each physical and chemical stage;

[0127] The third determination sub-module is configured to determine the heating condition parameters of the coke in each physical and chemical stage according to the temperature requirements and heating rate parameters;

[0128] The fourth determination sub-module is configured to obtain the state change characteristics of the coke in each physical and chemical stage and determine the appearance characteristics of the coke in each physical and chemical stage according to its physical or chemical reaction parameters in each physical and chemical stage of the coke.

[0129] In one embodiment, the second determination module includes:

[0130] The fifth determination sub-module is configured to determine the morphological change parameters of the coke in each stage according to the heating condition parameters and the appearance characteristics, and determine the coking progress of the coke in each stage according to the morphological change parameters;

[0131] The measurement sub-module is configured to determine the current maturity index of the coke in each stage according to the coking progress, obtain a mature coke sample and perform measurements, and obtain the mature sign index according to the measurement results;

[0132] The matching sub-module is configured to match the current maturity index of the coke in each stage with the mature sign index of the mature coke sample, and confirm the target stage with the maximum matching degree as the theoretically mature stage of the coke;

[0133] The analysis sub-module is configured to collect the coke coking samples in the theoretically mature stage, and analyze the coke coking samples to obtain the coking coal data.

[0134] In one embodiment, the third determination module includes:

[0135] The sixth determination sub-module is used to determine multiple pyrolysis products of coke during the coking process according to the coking coal data and the concentration data of each pyrolysis product;

[0136] The construction sub-module is used to determine the pyrolysis degree index of coking coal according to multiple pyrolysis products and the concentration data of each pyrolysis product, and construct a preset coking coal maturity prediction model based on historical data and machine learning algorithms;

[0137] The seventh determination sub-module is used to determine the current mapping relationship between the pyrolysis degree index and the preset coking coal maturity prediction model, and determine the maturity value of coke according to the current mapping relationship;

[0138] The eighth determination sub-module is used to collect a sample image of coke in the theoretical maturity stage, extract the coking characteristics of coke according to the sample image, and determine the material maturity value of coke according to the maturity value and coking characteristics of coke.

[0139] In one embodiment, as Figure 4 shown, the determination module 304 includes:

[0140] The detection sub-module 3041 is used to determine the existence form of each gas component in the coking process of coke, determine the detection method according to the existence form, and detect each gas component and its concentration through the detection method;

[0141] The ninth determination sub-module 3042 is used to determine the smoke state parameter according to the detected gas component and its concentration, determine the environmental impact factor based on the smoke state parameter, and determine the environmental protection maturity value of coke according to the environmental impact factor;

[0142] The calculation sub-module 3043 is used to calculate the comprehensive maturity of coke according to the environmental protection maturity value, the material maturity value and their respective weights, and confirm whether the comprehensive maturity meets the standard;

[0143] The tenth determination sub-module 3044 is used to, if not, determine the harmful gas volatilization trend when coke continues to coke according to the environmental protection maturity value, determine the coking continuation duration according to the harmful gas volatilization trend, and continue to coke coke based on the coking continuation duration until the comprehensive maturity meets the standard.

[0144] Those skilled in the art should understand that the first and second in the present invention refer to different application stages.

[0145] Other embodiments of the present disclosure will be readily apparent to those skilled in the art in view of the specification and practice of the disclosure herein. This application is intended to cover any variations, uses, or adaptations of the disclosure following the general principles of the disclosure and including known common general knowledge or conventional technical means in the art not disclosed herein. The specification and examples are to be considered exemplary only, and the true scope and spirit of the disclosure are indicated by the following claims.

[0146] It should be understood that the present disclosure is not limited to the exact structures described above and shown in the drawings, and various modifications and changes can be made without departing from its scope. The scope of the present disclosure is limited only by the appended claims.

Claims

1. A method for determining the maturity of coke in a coke oven, characterized in that, It includes the following steps: Obtain the current heating strategy of the coke oven, and determine the appearance characteristics and heating condition parameters at each stage when the coke is coked in the coke oven according to the current heating strategy; Based on the heating condition parameters, appearance characteristics, and the maturity marking index of the coke, determine the theoretical maturity stage of the coke, and collect the coking coal data at the theoretical maturity stage; Determine the pyrolysis degree index of the coking coal according to the coking coal data, and determine the material maturity value of the coke based on the pyrolysis degree index through a preset coking coal maturity prediction model; Detect the smoke state parameters at the theoretical maturity stage, determine the environmental protection maturity value of the coke according to the smoke state parameters, and comprehensively judge the maturity of the coke according to the environmental protection maturity value and the material maturity value.

2. The method for determining the maturity of coke in a coke oven according to claim 1, characterized in that, The obtaining of the current heating strategy of the coke oven and determining the appearance characteristics and heating condition parameters at each stage when the coke is coked in the coke oven according to the current heating strategy includes: Determine the current heating mode of the coke oven, obtain the temperature and pressure change parameters under the current heating mode, and determine the current heating strategy according to the temperature and pressure change parameters; According to the current heating strategy, determine the physical and chemical stages experienced by the coke during the coking process in the coke oven, and obtain the temperature requirements and heating rate parameters for each physical and chemical stage; Determine the heating condition parameters of the coke at each physical and chemical stage according to the temperature requirements and heating rate parameters; Obtain the state change characteristics of the coke at each physical and chemical stage and determine the appearance characteristics of the coke at each physical and chemical stage according to its physical or chemical reaction parameters at each physical and chemical stage.

3. The method for determining the maturity of coke in a coke oven according to claim 1, characterized in that, The determining of the theoretical maturity stage of the coke based on the heating condition parameters, appearance characteristics, and the maturity marking index of the coke, and collecting the coking coal data at the theoretical maturity stage includes: Determine the morphological change parameters of the coke at each stage according to the heating condition parameters and appearance characteristics, and determine the coking progress of the coke at each stage according to the morphological change parameters; Determine the current maturity index of the coke at each stage according to the coking progress, obtain a mature coke sample and conduct measurements, and obtain the maturity marking index according to the measurement results; Match the current maturity index of the coke at each stage with the maturity marking index of the mature coke sample, and confirm the target stage with the highest matching degree as the theoretical maturity stage of the coke; Collect the coking samples of the coke at the theoretical maturity stage, and analyze the coking samples of the coke to obtain the coking coal data.

4. The method for determining the maturity of coke in a coke oven according to claim 1, characterized in that, The determining of the pyrolysis degree index of the coking coal according to the coking coal data and determining the material maturity value of the coke based on the pyrolysis degree index through a preset coking coal maturity prediction model includes: Determine multiple pyrolysis products during the coking process of the coke and the concentration data of each pyrolysis product according to the coking coal data; Determine the pyrolysis degree index of the coking coal according to the multiple pyrolysis products and the concentration data of each pyrolysis product, and construct a preset coking coal maturity prediction model based on historical data and machine learning algorithms; Determine the current mapping relationship between the pyrolysis degree index and the preset coking coal maturity prediction model, and determine the maturity value of the coke according to the current mapping relationship; Collect sample images of coke at the theoretical maturity stage, extract the coking characteristics of coke according to the sample images, and determine the material maturity value of coke based on the maturity value and coking characteristics of coke.

5. The method for determining the maturity of coke in a coke oven according to claim 1, characterized in that Detect the smoke state parameters at the theoretical maturity stage, determine the environmental protection maturity value of coke according to the smoke state parameters, and comprehensively judge the maturity of coke according to the environmental protection maturity value and the material maturity value, including: Determine the existence forms of various gas components during the coking process of coke, determine the detection methods according to the existence forms, and detect various gas components and their concentrations through the detection methods; Determine the smoke state parameters according to the detected gas components and their concentrations, determine the environmental impact factor based on the smoke state parameters, and determine the environmental protection maturity value of coke according to the environmental impact factor; Calculate the comprehensive maturity of coke according to the environmental protection maturity value, the material maturity value and their respective weights, and confirm whether the comprehensive maturity meets the standard; If not, determine the harmful gas volatilization trend when coke continues to coke according to the environmental protection maturity value, determine the coking continuation duration according to the harmful gas volatilization trend, and continue to coke coke based on the coking continuation duration until the comprehensive maturity meets the standard.

6. A coke maturity determination system in a coke oven, characterized in that, The system includes: The first determination module is used to obtain the current heating strategy of the coke oven, and determine the appearance characteristics and heating condition parameters of each stage when coke is coked in the coke oven according to the current heating strategy; The second determination module is used to determine the theoretical maturity stage of coke based on the heating condition parameters, appearance characteristics and maturity marking indicators of coke, and collect coking coal data at the theoretical maturity stage; The third determination module is used to determine the pyrolysis degree index of coking coal according to the coking coal data, and determine the material maturity value of coke based on the pyrolysis degree index through a preset coking coal maturity prediction model; The determination module is used to detect the smoke state parameters at the theoretical maturity stage, determine the environmental protection maturity value of coke according to the smoke state parameters, and comprehensively judge the maturity of coke according to the environmental protection maturity value and the material maturity value.

7. The coke maturity determination system in the coke oven according to claim 6, characterized in that, The first determination module includes: The first determination sub-module is used to determine the current heating mode of the coke oven, obtain the temperature and pressure change parameters under the current heating mode, and determine the current heating strategy according to the temperature and pressure change parameters; The second determination sub-module is used to determine the physical and chemical stages experienced by coke during the coking process in the coke oven according to the current heating strategy, and obtain the temperature requirements and heating rate parameters of each physical and chemical stage; The third determination sub-module is used to determine the heating condition parameters of coke in each physical and chemical stage according to the temperature requirements and heating rate parameters; The fourth determination sub-module is used to obtain the state change characteristics of coke in each physical and chemical stage and determine the appearance characteristics of coke in each physical and chemical stage according to its physical or chemical reaction parameters in each physical and chemical stage.

8. The coke maturity determination system in the coke oven according to claim 6, characterized in that, The second determination module includes: The fifth determination sub-module is used to determine the morphological change parameters of coke in each stage according to the heating condition parameters and appearance characteristics, and determine the coking progress of coke in each stage; The measurement sub-module is used to determine the current maturity indicators of coke at each stage according to the coking progress, obtain mature coke samples for measurement, and obtain the maturity marker indicators according to the measurement results; The matching sub-module is used to match the current maturity indicators of coke at each stage with the maturity marker indicators of the mature coke samples, and confirm the target stage with the highest matching degree as the theoretical maturity stage of the coke; The analysis sub-module is used to collect coke coking samples at the theoretical maturity stage, and analyze the coke coking samples to obtain coking coal data.

9. The coke maturity determination system in the coke oven according to claim 6, characterized in that The third determination module includes: The sixth determination sub-module is used to determine multiple pyrolysis products of coke during the coking process and the concentration data of each pyrolysis product according to the coking coal data; The construction sub-module is used to determine the pyrolysis degree index of the coking coal according to multiple pyrolysis products and the concentration data of each pyrolysis product, and construct a preset coking coal maturity prediction model based on historical data and machine learning algorithms; The seventh determination sub-module is used to determine the current mapping relationship between the pyrolysis degree index and the preset coking coal maturity prediction model, and determine the maturity value of the coke according to the current mapping relationship; The eighth determination sub-module is used to collect sample images of coke at the theoretical maturity stage, extract the coking characteristics of the coke according to the sample images, and determine the material maturity value of the coke according to the maturity value and coking characteristics of the coke.

10. The coke maturity determination system in the coke oven according to claim 6, characterized in that, The determination module includes: The detection sub-module is used to determine the existence form of each gas component during the coking process of the coke, determine the detection method according to the existence form, and detect each gas component and its concentration through the detection method; The ninth determination sub-module is used to determine the smoke state parameters according to the detected gas components and their concentrations, determine the environmental impact factor based on the smoke state parameters, and determine the environmental protection maturity value of the coke according to the environmental impact factor; The calculation sub-module is used to calculate the comprehensive maturity of the coke according to the environmental protection maturity value, the material maturity value and their respective weights, and confirm whether the comprehensive maturity meets the standard; The tenth determination sub-module is used to, if not, determine the harmful gas volatilization trend when the coke continues to coke according to the environmental protection maturity value, determine the coking continuation duration according to the harmful gas volatilization trend, and continue to coke the coke based on the coking continuation duration until the comprehensive maturity meets the standard.

Images