Recycled gas control system suitable for thermal intensity control of coke production

Abstract

The present invention discloses a return gas control system suitable for controlling the thermal intensity of coke production, relates to the technical field of coke production, and solves the technical problem in the prior art that corresponding control cannot be performed according to the signal of the production line in the coke production process, and the gas control efficiency cannot be optimized. Specifically, the system comprises a real-time coal type production evaluation unit, which generates a high-impact signal or a low-impact signal according to coefficient comparison; a real-time production efficiency analysis unit generates an inefficient trend signal or a stable trend signal according to information analysis; a temperature control impact analysis unit generates a low-accuracy signal, a low-efficiency signal, a low-feasibility signal or a high-efficiency control signal according to parameter analysis; a temperature control efficiency analysis unit, which is used to collect control impact information and regulated impact information, and generates a temperature control low-impact signal and a temperature control high-impact signal according to information processing; and a situational control unit controls the return gas in combination with various types of signals generated by a control platform.

Description

Technical Field

[0001] The invention relates to the technical field of coke production, in particular to a return gas control system suitable for controlling thermal intensity of coke production. Background Art

[0002] The steel industry is a pillar industry, and coke is the key raw material for smelting steel. In addition to providing thermal energy, coke also plays a role in supporting the skeleton and acting as a reducing agent in the smelting process. From the perspective of current ironmaking processes and technologies, the status of coke as a key raw material for blast furnace ironmaking will not change for a long time in the future.

[0003] However, in the existing technology, coke production cannot infer the need for return gas control in current coke production from the two aspects of coal type evaluation and production line analysis, so it is impossible to accurately perform gas control. At the same time, it is impossible to analyze the temperature control efficiency and temperature control impact of gas control on the current coke production line, and it is impossible to accurately infer the current gas control efficiency. In addition, it is impossible to perform corresponding control according to the signals of the production line during the coke production process, and it is impossible to optimize the gas control efficiency.

[0004] In view of the above technical defects, a solution is now proposed. Summary of the invention

[0005] The purpose of the present invention is to solve the above-mentioned problems and to propose a return gas control system suitable for thermal intensity control of coke production.

[0006] The purpose of the present invention can be achieved through the following technical solutions:

[0007] A return gas control system suitable for controlling the thermal intensity of coke production includes a control platform, and the control platform is connected to a thermal intensity control terminal and a gas control terminal in communication;

[0008] The heat control terminal is connected with:

[0009] A real-time coal production assessment unit is used to collect coal assessment information and obtain coal production assessment coefficients, and generate high-impact signals or low-impact signals based on coefficient comparison;

[0010] Real-time production efficiency analysis unit collects temperature maintenance information and cycle information, and generates inefficient trend signals or stable trend signals based on information analysis;

[0011] Gas control terminal connections are:

[0012] A temperature control impact analysis unit is used to collect temperature control scale parameters and temperature adjustment trend parameters, and generate low accuracy signals, low efficiency signals, low feasibility signals or high efficiency control signals according to parameter analysis;

[0013] A temperature control efficiency analysis unit, used to collect adjustment impact information and adjusted impact information, and generate a temperature control low impact signal and a temperature control high impact signal according to information processing;

[0014] The situational control unit controls the return gas in combination with various types of signals generated by the control platform.

[0015] As a preferred embodiment of the present invention, the coal type evaluation information includes the speed-to-time ratio of the increase rate of the number of coal types and the duration of coal type alternation production, the increase value of the furnace temperature numerical adjustment control frequency corresponding to the coal type alternation stage, the standard coking time delay span corresponding to the furnace temperature continuous control frequency increase stage, and the growth range of the temperature deviation value corresponding to the real-time set coking temperature and the actual required coking temperature.

[0016] As a preferred embodiment of the present invention, if the coal type production assessment coefficient exceeds the coal type production assessment coefficient threshold, a high impact signal is generated; if the coal type production assessment coefficient does not exceed the coal type production assessment coefficient threshold, a low impact signal is generated.

[0017] As a preferred embodiment of the present invention, the temperature holding information and the cycle information are respectively a floating deviation value of the duration corresponding to when the production furnace temperature of the same type of coal reaches the coking temperature, and a floating value of the duration ratio before and after the furnace temperature reaches the coking temperature in the production cycle of the same type of coal;

[0018] If the temperature holding information exceeds the duration floating deviation value threshold, or the cycle information exceeds the duration ratio floating threshold, an inefficient trend signal is generated; if the temperature holding information does not exceed the duration floating deviation value threshold, and the cycle information does not exceed the duration ratio floating threshold, a stable trend signal is generated.

[0019] As a preferred embodiment of the present invention, the temperature control scale parameter and the temperature adjustment trend parameter are respectively the numerical ratio of the furnace temperature deviation temperature floating scale value to the actual deviation temperature during gas supply regulation, and the repeated adjustment frequency of the furnace temperature regulation trend during the gas supply regulation stage;

[0020] If the temperature control scale parameter exceeds the temperature value ratio threshold range, a low accuracy signal is generated;

[0021] If the temperature control scale parameter does not exceed the temperature value ratio threshold range, a low efficiency signal is generated;

[0022] If the temperature adjustment trend parameter exceeds the repeated adjustment frequency threshold, a low feasibility signal is generated;

[0023] If the temperature control scale parameter is within the temperature value ratio threshold range and the temperature adjustment trend parameter does not exceed the repeated adjustment frequency threshold, a high-efficiency control signal is generated.

[0024] As a preferred embodiment of the present invention, the adjustment influence information and the adjusted influence information are respectively the corresponding numerical ratio of the real-time setting adjustment amount floating span to the advance time length to reach the adjustment amount, and the reciprocating floating span value of the adjusted amount when the adjusted amount corresponding to the real-time adjustment amount is in the current environment;

[0025] If the adjustment impact information exceeds the span duration ratio threshold and the adjusted impact information does not exceed the floating span threshold, a temperature control low impact signal is generated; if the adjustment impact information does not exceed the span duration ratio threshold, or the adjusted impact information exceeds the floating span threshold, a temperature control high impact signal is generated.

[0026] As a preferred embodiment of the present invention, the process of the scene adjustment unit is as follows:

[0027] When the control platform receives low-impact signals and stable trend signals, the on-site control unit will dispatch according to the supply demand of the real-time gas supply network, and timely control the current return gas supply, and control the gas without affecting the coking efficiency;

[0028] When the control platform receives a low-impact signal or an inefficient trend signal, the on-site control unit will control the gas supply according to real-time production needs. If the control platform receives a low-accuracy signal, the gas supply adjustment unit will be reduced.

[0029] As a preferred embodiment of the present invention, after receiving the low efficiency signal, the reaction process of the current coal type is analyzed to infer whether the current coal gas supply is the only factor affecting the fluctuation of the coking temperature. If yes, the coal gas supply is increased; if not, other influencing factors are synchronously regulated when regulating the coal gas;

[0030] After receiving the low feasibility signal, the gas supply trend and temperature fluctuation trend of the current coal reaction process are analyzed. If no fluctuation occurs during the reaction of the coal and the coking temperature of the current coal is not reached, gas regulation will not be performed or other factors will be traced back and investigated first when temperature control is inefficient.

[0031] As a preferred embodiment of the present invention, after receiving a high-efficiency control signal, if a low-impact temperature control signal is received at the same time, the return gas control is continued according to the current control scheme; if a high-impact temperature control signal is received at the same time, the return gas control is first performed according to the current control scheme, and the impact on the surrounding environment of the production furnace is controlled simultaneously. If the temperature impact of the surrounding environment is controlled to within the normal range and the high-impact temperature control signal still appears, the current control scheme is modified and the impact on the surrounding environment is continuously controlled.

[0032] Compared with the prior art, the present invention has the following beneficial effects:

[0033] 1. In the present invention, the processed coal types of the coke production line are analyzed and evaluated, and the current coking efficiency is inferred whether it is suitable for the current production process through the real-time processed coal types, so as to avoid the real-time change of the coke type during the processing process, resulting in the continuous fluctuation of the coking efficiency and affecting the control of the coking temperature, so that the temperature control efficiency of the coke production cannot be reasonably inferred;

[0034] Conduct real-time production efficiency analysis on coke processing, infer whether the current coke processing efficiency meets the actual coking demand through real-time processing to ensure real-time processing efficiency, accurately judge the current processing status through real-time coke processing quality and coal type impact assessment, so as to facilitate reasonable regulation and control. In abnormal situations, gas regulation can improve coking quality. In normal situations, gas regulation can reduce actual investment costs without affecting coking quality.

[0035] 2. In the present invention, the temperature control efficiency of gas regulation is analyzed, and whether the temperature control efficiency of the current regulation stage meets the coking regulation is determined by gas regulation, so as to ensure that the temperature fluctuation brought by gas regulation can meet the coking demand, and avoid gas regulation failing to effectively perform temperature control regulation, so that it cannot promote coking, but increases the cost of gas scheduling, and reduces the coke processing efficiency;

[0036] Conduct temperature control impact analysis in combination with the current production environment to infer whether real-time temperature control impact exists during the current gas regulation and temperature control. Perform gas regulation and rectification based on the real-time temperature control impact analysis to ensure the efficiency of gas regulation. At the same time, conduct temperature impact analysis during gas regulation to ensure the accuracy of real-time temperature control and ensure that the coke can reach the coking temperature in time.

[0037] 3. In the present invention, the return gas is regulated according to the signal stored in the control platform, so as to improve the coke production efficiency by regulating according to the production demand of the heat intensity control end and the adjustment demand of the gas control end and combining the scene. BRIEF DESCRIPTION OF THE DRAWINGS

[0038] In order to facilitate understanding by those skilled in the art, the present invention is further described below with reference to the accompanying drawings.

[0039] Figure 1 It is the overall principle block diagram of the present invention;

[0040] Figure 2 This is a principle block diagram of Embodiment 1 of the present invention;

[0041] Figure 3 This is a principle block diagram of Embodiment 2 of the present invention;

[0042] Figure 4 This is a principle block diagram of Embodiment 3 of the present invention. DETAILED DESCRIPTION

[0043] In order to enable those skilled in the art to better understand the scheme of the present invention, the technical scheme in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0044] Reference to "embodiments" herein means that a particular feature, structure, or characteristic described in conjunction with the embodiments may be included in at least one embodiment of the present invention. The appearance of the phrase in various places in the specification does not necessarily refer to the same embodiment, nor is it an independent or alternative embodiment that is mutually exclusive with other embodiments. It is explicitly and implicitly understood by those skilled in the art that the embodiments described herein may be combined with other embodiments.

[0045] See also Figure 1 As shown, a return gas control system suitable for thermal intensity control of coke production includes a control platform, which is communicatively connected with a thermal intensity control terminal and a gas control terminal. In this system, the thermal intensity control terminal is used to perform real-time thermal intensity control on coke production, and the thermal intensity of coke can be inferred to meet the real-time coking demand through real-time return production; the gas control terminal is used to control the return gas required for coking of coke during return production, and the temperature control evaluation is performed according to the existing processing equipment to ensure the control efficiency of the return gas;

[0046] Embodiment 1

[0047] See also Figure 2 As shown, the heat intensity control end of the control platform bidirectionally communicates with a real-time coal production evaluation unit and a real-time production efficiency analysis unit; the real-time coal production evaluation unit is used to collect coal evaluation information and obtain coal production evaluation coefficients, and generate high-impact signals or low-impact signals according to coefficient comparison; the real-time production efficiency analysis unit collects temperature maintenance information and cycle information, and generates low-efficiency trend signals or stable trend signals according to information analysis;

[0048] During the coke production and processing, the control platform generates a heat intensity control instruction and sends it to the heat intensity control end. After receiving the instruction, the heat intensity control end generates a real-time coal type production evaluation signal and sends the real-time coal type production evaluation signal to the real-time coal type production evaluation unit. After receiving the real-time coal type production evaluation signal, the real-time coal type production evaluation unit analyzes and evaluates the processed coal types of the coke production line, and infers whether the current coking efficiency is suitable for the current production process through the real-time processed coal types, so as to avoid the real-time change of coke types during the processing process, resulting in continuous fluctuation of coking efficiency, and affecting the control of coking temperature, so that the temperature control efficiency of coke production cannot be reasonably inferred;

[0049] In the coke processing process, the real-time increase rate of the number of coke coal types and the duration of alternating production of different coal types are obtained, and the speed-to-time ratio is calculated based on the ratio. The ratio calculation of data in two different units only affects the numerical fluctuation of the data, and does not consider the problem of inconsistent units. The speed-to-time ratio calculated based on the ratio is marked as VSB;

[0050] In the coke processing process, the increase value of the control frequency of the furnace temperature numerical adjustment corresponding to the coal type alternation stage and the standard coking time delay span corresponding to the furnace temperature continuous control frequency increase stage are obtained, and the increase value of the control frequency of the furnace temperature numerical adjustment corresponding to the coal type alternation stage and the standard coking time delay span corresponding to the furnace temperature continuous control frequency increase stage are marked as PZ and SY respectively;

[0051] When the coal types are alternately produced during the coke processing process, the real-time set coking temperature and the actual required coking temperature in the coal type alternating production stage are obtained, and the growth range of the corresponding temperature deviation value is collected, and the growth range of the temperature deviation value corresponding to the real-time set coking temperature and the actual required coking temperature is marked as WZF;

[0052] The above data are uniformly marked as coal type assessment information, and substituted into the formula to obtain the coal type production assessment coefficient in the coke processing process, where the formula is: , where G is the coal production evaluation coefficient, hj1, hj2, hj3 and hj4 are preset proportional coefficients, e is a natural constant, β is an error correction factor, and its value is 0.97; the role of the preset proportional coefficient is the same as that of the dimensionless coefficient in the prior art, and the preset proportional coefficient is combined with the experience of personnel in this field during the setting process, which can effectively avoid the large difference in the corresponding values ​​of the collected multiple data, so that the influence of the small value data on the current processing process is negligible, resulting in accurate deviations in data processing. For example, the two data SY and PZ in the formula have a proportional influence on the coefficient. If SY takes a value of 1000 and PZ takes a value of 0.1, the fluctuation of the coefficient can be ignored by the fluctuation of PZ, but the fluctuation of PZ itself does affect the current coefficient. Therefore, the above situation is prevented by setting the preset proportional coefficient;

[0053] Compare the coal production assessment coefficient during coke processing with the coal production assessment coefficient threshold:

[0054] If the coal type production evaluation coefficient during the coke processing exceeds the coal type production evaluation coefficient threshold, it is inferred that the coal type production impact during the coke processing is high, a high impact signal is generated and the high impact signal is sent to the thermal intensity control end; if the coal type production evaluation coefficient during the coke processing does not exceed the coal type production evaluation coefficient threshold, it is inferred that the coal type production impact during the coke processing is low, a low impact signal is generated and the low impact signal is sent to the thermal intensity control end;

[0055] At the same time, a real-time production efficiency analysis signal is generated and sent to the real-time production efficiency analysis unit. After receiving the real-time production efficiency analysis signal, the real-time production efficiency analysis unit performs real-time production efficiency analysis on the coke processing, and infers whether the current coke processing efficiency meets the actual coking demand through real-time processing to ensure the real-time processing efficiency. The current processing state is accurately judged through real-time coke processing quality and coal type impact assessment, so that reasonable regulation can be carried out. In abnormal situations, gas regulation is carried out to improve the coking quality. In normal situations, gas regulation can reduce the actual investment cost without affecting the coking quality.

[0056] During the coke processing, when the production furnace temperature of the same type of coal reaches the coking temperature and lasts for a period of time, the duration floating deviation value is obtained. At the same time, during the coke processing, the duration ratio floating value before and after the furnace temperature reaches the coking temperature within the production cycle of the same type of coal is collected, and the duration floating deviation value of the coking temperature and the duration ratio floating value before and after the furnace temperature reaches the coking temperature are marked as temperature holding information and cycle information, respectively, and compared with the duration floating deviation value threshold and the duration ratio floating threshold, respectively:

[0057] If the duration floating deviation value exceeds the duration floating deviation value threshold, or the duration ratio floating value before and after the furnace temperature reaches the coking temperature exceeds the duration ratio floating threshold, it is inferred that the coke production efficiency in the current coke processing process is decreasing, and an inefficient trend signal is generated and sent to the heat intensity control end;

[0058] If the duration floating deviation value does not exceed the duration floating deviation value threshold, and the duration ratio floating value before and after the furnace temperature reaches the coking temperature does not exceed the duration ratio floating threshold, it is inferred that the coke production efficiency in the current coke processing process does not show a decreasing trend, and a stable trend signal is generated and sent to the thermal intensity control end;

[0059] The heat intensity control terminal stores the received high impact signals, low impact signals, low efficiency trend signals and stable trend signals in real time and sends them to the control platform synchronously;

[0060] Embodiment 2

[0061] See also Figure 3As shown, the control platform is connected to the gas control end through a temperature control impact analysis unit and a temperature control efficiency analysis unit; the temperature control impact analysis unit is used to collect temperature control scale parameters and temperature adjustment trend parameters, and generate low accuracy signals, low efficiency signals, low feasibility signals or high efficiency control signals according to parameter analysis;

[0062] A temperature control efficiency analysis unit, used to collect adjustment impact information and adjusted impact information, and generate a temperature control low impact signal and a temperature control high impact signal according to information processing;

[0063] The control platform generates a gas control monitoring instruction to the gas control end. After receiving the instruction, the gas control end generates a temperature control efficiency analysis signal and sends the temperature control efficiency analysis signal to the temperature control efficiency analysis unit. After receiving the temperature control efficiency analysis signal, the temperature control efficiency analysis unit analyzes the temperature control efficiency of the gas control, and judges whether the temperature control efficiency of the current control stage meets the coke coking control through gas control, so as to ensure that the temperature fluctuation brought by the gas control can meet the coking demand, and avoid the gas control failing to effectively perform temperature control adjustment, so that it cannot promote coking, but increases the cost of gas scheduling, and reduces the coke processing efficiency;

[0064] When the gas supply is regulated, the numerical ratio of the furnace temperature deviation temperature floating scale value to the actual deviation temperature is collected, and at the same time, the repeated adjustment frequency of the furnace temperature regulation trend is collected during the gas supply regulation stage, wherein the temperature floating scale value is expressed as the unit amount of furnace temperature fluctuation during the gas regulation stage, such as 1 degree Celsius, 0.1 degree Celsius, etc.; the furnace temperature regulation trend is a cooling trend or a heating trend, and the repeated adjustment is expressed as the cooling trend being adjusted to the heating trend, or the heating trend being adjusted to the cooling trend;

[0065] The numerical ratio of the furnace temperature deviation floating scale value to the actual deviation temperature and the repeated adjustment frequency of the furnace temperature control trend are set as the temperature control scale parameter and the temperature control trend parameter, respectively, and compared with the temperature value ratio threshold range and the repeated adjustment frequency threshold, respectively:

[0066] If the ratio of the floating scale value of the furnace temperature deviation temperature to the actual deviation temperature exceeds the temperature value ratio threshold range, it is inferred that the temperature difference control accuracy during the current gas regulation is low, and a low accuracy signal is generated and sent to the gas regulation end, and then forwarded to the regulation platform;

[0067] If the numerical ratio of the furnace temperature deviation temperature floating scale value to the actual deviation temperature does not exceed the temperature numerical ratio threshold range, it is inferred that the temperature difference control efficiency is low during the current gas regulation, and a low efficiency signal is generated and sent to the gas regulation end, and then forwarded to the regulation platform;

[0068] If the repetitive adjustment frequency of the furnace temperature control trend exceeds the repetitive adjustment frequency threshold, it is inferred that the feasibility of the temperature difference control during the current gas control is poor, a low feasibility signal is generated and sent to the gas control end, and then forwarded to the control platform;

[0069] If the numerical ratio of the furnace temperature deviation temperature floating scale value to the actual deviation temperature is within the temperature numerical ratio threshold range, and the repeated adjustment frequency of the furnace temperature control trend does not exceed the repeated adjustment frequency threshold, it is inferred that the temperature difference control efficiency during the current gas control is qualified, and an efficient control signal is generated and sent to the gas control end, and then forwarded to the control platform;

[0070] At the same time, a temperature control impact analysis signal is generated and sent to the temperature control impact analysis unit. After receiving the temperature control impact analysis signal, the temperature control impact analysis unit performs temperature control impact analysis in combination with the current production environment, infers whether there is a real-time temperature control impact when the current gas is adjusted and controlled, and performs gas adjustment and rectification according to the real-time temperature control impact analysis to ensure the efficiency of gas adjustment. At the same time, a temperature impact analysis is performed during gas adjustment to ensure the accuracy of real-time temperature control and ensure that the coke can reach the coking temperature in time;

[0071] In the gas control stage, the real-time gas supply adjustment unit quantity and the corresponding furnace temperature fluctuation are obtained and marked as the adjustment quantity and the adjusted quantity respectively, and the adjustment quantity and the adjusted quantity correspond one to one. Specifically, when a set amount of gas is input, the furnace temperature reaches the set temperature, or when a certain amount of gas is added, the furnace temperature rises by a certain amount of temperature;

[0072] In the gas control stage, the numerical ratio of the floating span of the real-time set adjustment amount and the advance time to reach the adjustment amount is obtained, where the current numerical ratio only calculates the ratio of the floating span and the time value, and infers the impact of the floating of the two data values. At the same time, in the gas control stage, when the regulated amount corresponding to the real-time adjustment amount is in the current environment, the reciprocating floating span value of the regulated amount is obtained, and the numerical ratio of the floating span of the real-time set adjustment amount and the advance time to reach the adjustment amount and the reciprocating floating span value of the regulated amount are marked as adjustment impact information and regulated impact information, respectively, and compared with the span time ratio threshold and the floating span threshold, respectively:

[0073] If the ratio of the corresponding values ​​of the real-time set adjustment amount floating span and the advance time to reach the adjustment amount exceeds the span-time ratio threshold, and the reciprocating floating span value of the adjusted amount does not exceed the floating span threshold, it is inferred that the current temperature control impact analysis is qualified, and a temperature control low impact signal is generated and sent to the control platform;

[0074] If the ratio of the corresponding values ​​of the real-time set adjustment amount floating span and the advance time to reach the adjustment amount does not exceed the span time ratio threshold, or the reciprocating floating span value of the adjusted amount exceeds the floating span threshold, it is inferred that the current temperature control impact analysis is unqualified, and a temperature control high impact signal is generated and sent to the control platform;

[0075] After receiving the temperature control low impact signal and the temperature control high impact signal, the control platform stores them for use in situational control;

[0076] Embodiment 3

[0077] See also Figure 4 As shown, after the first and second embodiments are completed, this embodiment adds a scene-specific control unit according to the coefficient types generated by the first two embodiments; the scene-specific control unit controls the return gas in combination with various types of signals generated by the control platform;

[0078] The control platform generates a situational control instruction based on the real-time low signal received and sends the situational control instruction to the situational control unit. After receiving the situational control instruction, the situational control unit controls the return gas according to the signal stored in the control platform, so as to improve the coke production efficiency by controlling the production demand of the heat intensity control end and the adjustment demand of the gas control end in combination with the scene. The combination of scenes refers to the combination of actual production scenes, such as the actual coal type input amount, the actual carbon refining temperature value and the preset temperature deviation, and other real-time production scenes.

[0079] When the control platform receives low-impact signals and stable trend signals, the on-site control unit will dispatch according to the supply demand of the real-time gas supply network, and timely control the current return gas supply, and control the gas without affecting the coking efficiency;

[0080] When the control platform receives a low-impact signal or an inefficient trend signal, the on-site control unit will control the gas supply according to the real-time production demand. If the control platform receives a low-accuracy signal, the gas supply adjustment unit will be reduced to ensure that the temperature control scale value corresponding to the gas control amount can fit the temperature difference value, avoid the temperature control scale value being too large and unable to be specifically controlled to the coking temperature, and match the current coal type with the current adjustment method;

[0081] After receiving the low efficiency signal, the reaction process of the current coal type is analyzed to infer whether the current gas supply is the only factor affecting the fluctuation of coking temperature. If yes, the gas supply is increased; if not, other influencing factors are synchronously regulated when the gas is regulated; other influencing factors are factors that affect the coking temperature other than the gas supply, such as the real-time pressure and air tightness of the carbon-making furnace and other factors that affect the coke output in the existing technology;

[0082] After receiving the low feasibility signal, the gas supply trend and temperature fluctuation trend of the current coal reaction process are analyzed to infer whether the temperature fluctuates during the current gas regulation. The fluctuation here means that the temperature fluctuation value or the duration of the fluctuation exceeds the set threshold, excluding the influence of natural fluctuation. If there is no fluctuation during the coal reaction, the current coal coking temperature has not been reached, and gas regulation is not performed first, or when the temperature control is inefficient, other factors are traced and checked first, and gas supply regulation is not performed first;

[0083] After receiving the high-efficiency control signal, if the temperature control low-impact signal is received at the same time, the return gas control will continue according to the current control plan;

[0084] If a high-impact temperature control signal is received at the same time, the return gas will be regulated according to the current control plan first, and the impact on the surrounding environment of the production furnace will be controlled simultaneously. If the high-impact temperature control signal still appears after the surrounding environmental temperature impact is controlled to the normal range, the current control plan will be modified and the surrounding environmental impact will be continuously controlled.

[0085] The above formulas are obtained by collecting a large amount of data for software simulation and selecting a formula close to the real value. The coefficients in the formula are set by technicians in this field according to actual conditions. In this application, a threshold comparison method is used to detect collected data, where the threshold settings are all empirical values ​​set by personnel in this field in the prior art. The data collected in the current processing scene is verified and compared through the empirical value setting;

[0086] The preferred embodiments of the present invention disclosed above are only used to help explain the present invention. The preferred embodiments do not describe all the details in detail, nor do they limit the invention to only specific implementation methods. Obviously, many modifications and changes can be made according to the content of this specification. This specification selects and specifically describes these embodiments in order to better explain the principles and practical applications of the present invention, so that those skilled in the art can understand and use the present invention well. The present invention is limited only by the claims and their full scope and equivalents.

Claims

1. A return gas control system suitable for controlling the thermal intensity of coke production, characterized in that: It includes a control platform, and the control platform is connected to a heat intensity control terminal and a gas control terminal; The heat control terminal is connected with: A real-time coal production assessment unit is used to collect coal assessment information and obtain coal production assessment coefficients, and generate high-impact signals or low-impact signals based on coefficient comparison; The real-time production efficiency analysis unit collects temperature holding information and cycle information, and generates an inefficient trend signal or a stable trend signal based on information analysis; the temperature holding information and cycle information are respectively the floating deviation value of the corresponding duration when the production furnace temperature of the same type of coal reaches the coking temperature, and the floating value of the duration ratio before and after the furnace temperature reaches the coking temperature within the production cycle of the same type of coal; If the temperature holding information exceeds the duration floating deviation value threshold, or the cycle information exceeds the duration ratio floating threshold, an inefficient trend signal is generated; If the temperature information does not exceed the duration floating deviation value threshold, and the cycle information does not exceed the duration ratio floating threshold, a stable trend signal is generated; Gas control terminal connections are: The temperature control impact analysis unit is used to collect temperature control scale parameters and temperature adjustment trend parameters, and generate low accuracy signals, low efficiency signals, low feasibility signals or high efficiency control signals according to parameter analysis; the temperature control scale parameters and temperature adjustment trend parameters are respectively the numerical ratio of the furnace temperature deviation temperature floating scale value to the actual deviation temperature, and the repeated adjustment frequency of the furnace temperature control trend; If the temperature control scale parameter exceeds the temperature value ratio threshold range, a low accuracy signal is generated; If the temperature control scale parameter does not exceed the temperature value ratio threshold range, a low efficiency signal is generated; If the temperature adjustment trend parameter exceeds the repeated adjustment frequency threshold, a low feasibility signal is generated; If the temperature control scale parameter is within the temperature value ratio threshold range, and the temperature adjustment trend parameter does not exceed the repeated adjustment frequency threshold, a high-efficiency control signal is generated; The temperature control efficiency analysis unit is used to collect the adjustment influence information and the adjusted influence information, and generate the temperature control low influence signal and the temperature control high influence signal according to the information processing; the adjustment influence information and the adjusted influence information are respectively the corresponding numerical ratio of the real-time set adjustment amount floating span and the advance time to reach the adjustment amount, and the reciprocating floating span value of the adjusted amount when the adjusted amount corresponding to the real-time adjustment amount is in the current environment; If the adjustment impact information exceeds the span duration ratio threshold, and the adjusted impact information does not exceed the floating span threshold, a temperature control low impact signal is generated; if the adjustment impact information does not exceed the span duration ratio threshold, or the adjusted impact information exceeds the floating span threshold, a temperature control high impact signal is generated; The situational control unit controls the return gas in combination with various types of signals generated by the control platform; when the control platform receives low-impact signals and stable trend signals, the situational control unit dispatches according to the supply demand of the real-time gas supply network, and controls the current return gas supply in a timely manner, and controls the gas without affecting the coking efficiency; When the control platform receives a low impact signal or an inefficient trend signal, the on-site control unit will control the gas supply according to the real-time production demand. If the control platform receives a low accuracy signal, the gas supply adjustment unit will be reduced; After receiving the low efficiency signal, the reaction process of the current coal type is analyzed to infer whether the current gas supply chain is the only factor affecting the fluctuation of coking temperature. If yes, the gas supply is increased; if not, other influencing factors are regulated synchronously when regulating the gas; After receiving the low feasibility signal, analyze the gas supply trend and temperature fluctuation trend of the current coal reaction process. If there is no fluctuation during the reaction of the coal, and the coking temperature of the current coal is not reached, do not control the gas or prioritize tracing other factors when the temperature control is inefficient. After receiving the high-efficiency control signal, if a low-impact temperature control signal is received at the same time, the return gas control will continue to be carried out according to the current control plan; if a high-impact temperature control signal is received at the same time, the return gas control will be carried out according to the current control plan first, and the impact of the surrounding environment of the production furnace will be controlled simultaneously. If the temperature impact of the surrounding environment is controlled to within the normal range and the high-impact temperature control signal still appears, the current control plan will be modified and the impact of the surrounding environment will continue to be controlled.

2. The return gas control system suitable for thermal intensity control of coke production according to claim 1 is characterized in that: The coal type assessment information includes the ratio of the speed of increase in the number of coal types to the duration of coal type alternation production, the increase in the frequency of control for adjusting the furnace temperature value corresponding to the coal type alternation stage, the delay span of the standard coking time corresponding to the stage of increasing the frequency of continuous furnace temperature control, and the growth range of the temperature deviation value corresponding to the real-time set coking temperature and the actual required coking temperature.

3. The return gas control system suitable for controlling the thermal intensity of coke production according to claim 2 is characterized in that: If the coal type production assessment coefficient exceeds the coal type production assessment coefficient threshold, a high impact signal is generated; if the coal type production assessment coefficient does not exceed the coal type production assessment coefficient threshold, a low impact signal is generated.

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