CN116200201A - Method, device and storage medium for obtaining standard temperature of carbonization chamber of coke oven - Google Patents

Abstract

The invention discloses a method, a device and a storage medium for obtaining the standard temperature of a carbonization chamber of a coke oven. According to the coking time, a preliminary standard temperature is formed through a mathematical model. After manual offset calibration, no intervention is required to ensure high reliability; At the same time, the standard temperature calculated by the mathematical model can better demonstrate the actual temperature demand of each carbonization chamber in the coke oven production process, has better dynamic response ability, and is more accurate. The fitting temperature of the whole furnace refers to the rising and falling flue path of the coke oven, coal charging sequence, fire falling time and coking index to form the final mathematical function, and the actual temperature is fitted. Factors such as coal moisture, calorific value, gas flow rate, ambient temperature, and actual coal loading in each carbonization chamber are corrected as feed-forward compensation to ensure real-time and accuracy in the adjustment process.

Description

Method, device and storage medium for obtaining standard temperature of carbonization chamber of coke oven

technical field

The invention belongs to the technical field of coke oven control, and in particular relates to a method, device and storage medium for obtaining the standard temperature of a carbonization chamber of a coke oven.

Background technique

The heating of the coke oven is a thermal process in which a single carbonization chamber is intermittent and the whole furnace is continuous, and it is disturbed by many factors at the same time. There are definite factors: measurable factors such as periodic coal loading and coking, moisture changes, and coal quality calorific value changes; there are also temperature characteristics in the heating process: such as hysteresis, nonlinearity, and time-varying characteristics.

At present, most enterprises adopt the method of artificial intermittent temperature measurement, and modify the gas pressure to control the coke oven temperature according to the operation experience. This method has shortcomings such as high labor intensity and untimely measurement and control; moreover, empirical judgments vary from person to person, making it difficult to be timely and accurate. waste.

For example, the existing standard temperature is formed by adding moisture and coal calorific value to the manual experience value. The standard temperature setting of the coke oven still relies on manual experience; the final effect varies from person to person and from environment to environment. The adaptability is not strong, and the investment rate is low.

For other similar schemes, the temperature fitting of the carbonization chamber of the coke oven is only a simple summary of the average temperature, and there is no functional relationship based on the coke oven's ascending and descending flue, coal charging sequence, fire falling time and coking index; the damage of individual temperature measuring components and coke oven reversing will cause the fitted temperature distortion.

Contents of the invention

The purpose of the present invention is to provide a method, device and storage medium for obtaining the standard temperature of the carbonization chamber of a coke oven. According to the coking time, a preliminary standard temperature is formed through a mathematical model. After manual offset calibration, no further intervention is required to ensure high reliability. At the same time, the standard temperature calculated by the mathematical model can better demonstrate the actual temperature demand of each carbonization chamber in the coke oven production process, and has better dynamic response ability and is more accurate.

In order to solve the above problems, the technical solution of the present invention is:

A method for obtaining the standard temperature of a carbonization chamber of a coke oven, comprising:

Arrange coded cables in the carbonization chamber of the coke oven, and set identifiable carbonization chamber numbers on the coded cables;

A data acquisition device is installed on the coal loading car or coke pushing car, and the data collecting device is used to collect the carbonization chamber number, coal charging action signal and coke pushing action signal data where the coal charging car or coke pushing car is located, and will collect The data is transmitted to the control device;

The control device calculates the coking time according to the number of the carbonization chamber, the coal loading action signal and the coke pushing action signal data;

According to the coking time, the standard carbonization chamber temperature curve was fitted by multi-order Gaussian function to obtain the standard temperature of the coke oven carbonization chamber.

According to an embodiment of the present invention, the fitting of the temperature curve of the standard carbonization chamber through a multi-order Gaussian function according to the coking time further includes:

The side furnace carbonization chamber and other carbonization chambers of the coke oven were fitted with standard temperature curves respectively.

According to an embodiment of the present invention, the side furnace carbonization chamber of the coke oven is fitted with a standard temperature curve as follows:

Y=a11*EXP(-((x-b11)/c11)*((x-b11)/c11))

+a12*EXP(-(((x-b12)/c12)*(x-b12)/c12))

+a13*EXP(-(((x-b13)/c13)*(x-b13)/c13))

+a14*EXP(-(((x-b14)/c14)*(x-b14)/c14))

Among them, x is the coking time, and a11~a14, b11~b14, c11~c14 are coefficients obtained by iterative calculation of multi-order Gaussian functions.

According to an embodiment of the present invention, the standard temperature curve fitting of the carbonization chamber except the side furnace carbonization chamber in the coking oven is as follows:

y=a1*EXP(-((x-b1)/c1)*((x-b1)/c1))

+a2*EXP(-(((x-b2)/c2)*(x-b2)/c2))

+a3*EXP(-(((x-b3)/c3)*(x-b3)/c3))

+a4*EXP(-(((x-b4)/c4)*(x-b4)/c4))

Among them, x is the coking time, and a1~a4, b1~b4, c1~c4 are coefficients obtained by iterative calculation of multi-order Gaussian functions.

According to an embodiment of the present invention, the method for obtaining the standard temperature of the carbonization chamber of the coke oven further includes obtaining the temperature of the entire coke oven:

Real-time collection of temperature data in the carbonization chamber, judging the air flow direction of the fire path, and obtaining the current type of fire path;

According to the temperature data collected in the carbonization chamber, the quality analysis of the temperature collection equipment is carried out to obtain effective temperature data;

Summarize the effective temperature data according to the coal loading sequence, and calculate the fitting temperature of each sequence;

Take the average value of the fitting temperature of all serial sequences to obtain the temperature of the whole furnace.

According to an embodiment of the present invention, the obtained temperature of the whole furnace is screened according to time, and the temperature at a preset time after the reversing of the fire channel is selected as the fitting temperature of the whole furnace.

According to an embodiment of the present invention, the preset time ranges from 5 minutes to 10 minutes.

According to an embodiment of the present invention, the compensation control of coal moisture, gas calorific value, gas flow rate, ambient temperature and coal loading is used to adjust the fitting temperature of the whole furnace, output the return gas pressure increment, and control the return gas pressure. The adjustment system compensates in real time.

A device for obtaining the standard temperature of a carbonization chamber of a coke oven, comprising:

The data collection module is used to collect the number of the carbonization chamber where the coal loading truck or the coke pushing truck is located, the data of the coal loading action signal and the coke pushing action signal, and transmit the collected data to the control module;

The control module calculates the coking time according to the number of the carbonization chamber, the coal charging action signal and the coke pushing action signal data;

The temperature fitting module fits the temperature curve of the standard carbonization chamber through a multi-order Gaussian function according to the coking time to obtain the standard temperature of the carbonization chamber of the coke oven.

A storage medium storing computer-readable instructions. When the computer-readable instructions are executed by one or more processors, one or more processors execute the standard temperature of the coke oven carbonization chamber in an embodiment of the present invention. Get the steps in the method.

Compared with the prior art, the present invention has the following advantages and positive effects due to the adoption of the above technical scheme:

The method for obtaining the standard temperature of the coke oven carbonization chamber in an embodiment of the present invention forms a preliminary standard temperature through a mathematical model according to the coking time, and after manual offset calibration, no intervention is required to ensure high reliability; at the same time, The standard temperature can better demonstrate the actual temperature demand of each carbonization chamber in the coke oven production process, and has better dynamic response ability and is more accurate. The fitting temperature of the whole furnace refers to the rising and falling flue path of the coke oven, coal charging sequence, fire falling time and coking index to form the final mathematical function, and the actual temperature is fitted. Factors such as coal moisture, calorific value, gas flow rate, ambient temperature, and actual coal loading in each carbonization chamber are corrected as feed-forward compensation to ensure real-time and accuracy in the adjustment process.

Description of drawings

Fig. 1 is a flow diagram of the method for obtaining the standard temperature of the coke oven carbonization chamber in an embodiment of the present invention;

Fig. 2 is a logical block diagram of coke oven temperature control in an embodiment of the present invention.

Detailed ways

A method, device and storage medium for obtaining the standard temperature of the coke oven carbonization chamber proposed by the present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments. Advantages and features of the present invention will be apparent from the following description and claims.

An embodiment of the present invention provides a method for obtaining the standard temperature of the carbonization chamber of the coke oven, which simulates the dynamic change of the temperature during the combustion process of the coke oven body as a dynamic temperature target, which is different from the fixed temperature target of other schemes, and is more accurate and more efficient. Energy efficient. Among them, the calculation method of coke oven fitting temperature is to analyze various failure factors of the collected signals, and count the number of normal and failure signals into the temperature statistics. According to the temperature statistics method of the coke oven coal charging sequence, multiple The temperature point fault has higher fault tolerance; according to the flow direction of the flue, the relatively stable interval after the reversing is selected for calculation, which can eliminate the disturbance caused by the reversing of the coke oven, which is more accurate than other solutions; at the same time, the real-time monitoring of the temperature measuring element is also more manual. Real-time temperature measurement is higher and more reliable.

Please refer to Fig. 1, the method for obtaining the standard temperature of the carbonization chamber of the coke oven comprises the following steps:

S1: Arrange coded cables in the carbonization chamber of the coke oven, and set an identifiable carbonization chamber number on the coded cables;

S2: Install a data acquisition device on the coal loading car or coke pushing car, the data collecting device is used to collect the carbonization chamber number, coal charging action signal and coke pushing action signal data of the coal charging car or coke pushing car, and transmit the collected data to the control device;

S3: The control device calculates the coking time according to the number of the carbonization chamber, the coal charging action signal and the coke pushing action signal data;

S4: According to the coking time, the standard carbonization chamber temperature curve is fitted by a multi-order Gaussian function to obtain the standard temperature of the coke oven carbonization chamber.

Specifically, the standard temperature of a single carbonization chamber is the carbonization chamber temperature corresponding to the current coking time calculated through mathematical modeling, and is used as the current standard temperature of the carbonization chamber after manual correction. Determination of coking time (x) in the carbonization chamber: from the beginning of coal loading to the end of coke pushing.

1) First collect the coal loading signal of the coal loading vehicle and the coke pushing signal of the coke pushing vehicle through the vehicle-mounted radio station;

2) Accurately locate the number of the carbonization chamber for coal charging at the current moment or the number of the carbonization chamber for pushing coke at the current moment through the coding cable;

3) Through wireless transmission to the APC computer control system in the control room. The APC computer control system calculates the time used for the entire coking process, that is, the coking time (x) according to the number of the carbonization chamber, combined with the coal charging and coke pushing actions of the carbonization chamber.

The standard temperature of the whole furnace is calculated by combining the average temperature of each carbonization chamber. Since the temperature curves of the side furnace and other carbonization chambers are completely different, the mathematical model calculation is carried out separately for the temperature of the side furnace and other carbonization chambers. Matlab software is used to pass The multi-order Gaussian function is used to fit the standard carbonization chamber temperature curve in the laboratory to obtain the final fitting formula. Different furnace types can fit different formula coefficients according to the experimental data. The following takes a 5.5-meter tamping coke oven as an example:

1) Standard carbonization chamber temperature (y):

y=a1*EXP(-((x-b1)/c1)*((x-b1)/c1))+a2*EXP(-(((x-b2)/c2)*(x-b2)/ c2))+

a3*EXP(-(((x-b3)/c3)*(x-b3)/c3))+a4*EXP(-(((x-b4)/c4)*(x-b4)/c4) );

x is the coking time; EXP: an exponential function with the natural constant e as the base.

2) Temperature of side furnace carbonization chamber (y):

Y=a11*EXP(-((x-b11)/c11)*((x-b11)/c11))+a12*EXP(-(((x-b12)/c12)*(x-b1

2)/c12))+a13*EXP(-(((x-b13)/c13)*(x-b13)/c13))+a14*EXP(-(((x-b14)/c14)*( x-b14)/c14));

x is coking time;

3) Standard temperature of single-hole carbonization chamber (TV):

TV=y+JZWD;

JZWD: manual temperature correction;

4) The standard temperature (TSV) of the carbonization chamber of the whole furnace is calculated by averaging the standard temperatures of each carbonization chamber. As the setting value of compensation adjustment, take a single furnace with 72 holes as an example:

TSV=(TV1+TV2+...TV71+TV72)/72.

The fitting temperature TSP of the whole furnace carbonization chamber is the coke oven temperature, which is the main control object in the coke oven temperature control system. The final mathematical function is calculated by analyzing factors such as the ascending and descending flue path of the coke oven, the sequence of coal charging, and the reversing of the coke oven.

1) Judgment of the air flow direction of the fire path: after the change of direction, the temperature of the carbonization chamber is collected at an interval of 30 seconds. The collected data is stored in the system cache variable area. Judgment range (default 5 degrees), it can be considered that the fire path is in the descending fire path, on the contrary, if the temperature continues to rise, it is judged that the fire path is an ascending fire path.

2) Analyze the quality of the temperature acquisition signal, specify the allowable upper and lower limits of the temperature, and the maximum rate of change according to the process requirements; diagnose abnormal phenomena such as open circuit, short circuit, and temperature mutation, and alarm and remind abnormal temperatures. If the temperature is normal, the quality (DQ) output is 1, and if the temperature is abnormal, the quality (DQ) output is 0; the number of normal and faulty temperature acquisition equipment is counted in a serial manner. Take the 92 series sequence of coal loading 1# group as an example, the effective temperature quantity of 1# group:

DQ=DQ1+DQ11+DQ21+DQ31+DQ41+DQ51+DQ61+DQ71+DQ81.

3) Summarize the temperature signals according to the coal loading sequence, and calculate the fitting temperature of the sequence:

TE1=T1*DQ1+T11*DQ11+T21*DQ21+T31*DQ31+T41*DQ41+...T81*DQ81.

The temperature of the whole furnace:

TS=average(TE1:TE8).

4) Select the calculated temperature of the entire furnace, and select the temperature after 5-10 minutes of reversing of the descending fire path as the fitting temperature TSP of the entire furnace. The choice of reversing time can be selected according to the actual temperature performance of the coke oven.

5) Program code:

IF JL1AVG1100>JL1AVG100 THEN

JL1_UD:＝TRUE; (*machine side downdraft flag*)

ELSE

JL1_UD:＝FALSE; (*updraft flag on machine side*)

END_IF;

IF JL1_TIMER>=300 AND JL1_UD=TRUE THEN TSP:=JL1_AVG; END_IF;

Compensation control of coal moisture, gas calorific value, gas flow, ambient temperature and coal loading, according to the influence of each factor on temperature, a broken line function is formed for correction and compensation.

Please refer to Figure 2, the standard temperature TSV is used as the set temperature, the fitting temperature TSP is used as the adjustment object, and the temperature compensation is calculated from the coal moisture, gas calorific value, gas flow rate, ambient temperature and coal loading for adjustment, and the output is returned to the furnace Gas pressure increment, real-time compensation for the return gas pressure regulation system.

According to the above method, the present invention also provides a device for obtaining the standard temperature of the coke oven carbonization chamber, the device comprising:

The data collection module is used to collect the number of the carbonization chamber where the coal loading truck or the coke pushing truck is located, the data of the coal loading action signal and the coke pushing action signal, and transmit the collected data to the control module;

The control module calculates the coking time according to the number of the carbonization chamber, the coal charging action signal and the coke pushing action signal data;

The temperature fitting module fits the temperature curve of the standard carbonization chamber through a multi-order Gaussian function according to the coking time to obtain the standard temperature of the carbonization chamber of the coke oven.

Wherein, the temperature fitting module is also used to fit the temperature of the entire coke oven according to the above method of obtaining the standard temperature of the carbonization chamber of the coke oven.

The functions and implementation methods of the data acquisition module, control module and temperature fitting module in the device are all as described above in the method for obtaining the standard temperature of the coke oven carbonization chamber, and will not be repeated here.

Another embodiment of the present invention also provides a computer-readable storage medium.

The computer-readable storage medium may be a non-volatile computer-readable storage medium, and the computer-readable storage medium may also be a volatile computer-readable storage medium. Instructions are stored in the computer-readable storage medium, and when the instructions are run on the computer, the computer is made to execute the steps of the logistics order printing device method in the first embodiment.

If the method for obtaining the standard temperature of the carbonization chamber of the coke oven is implemented in the form of program instructions and sold or used as an independent product, it can be stored in a computer-readable storage medium. Based on this understanding, the technical solution of this embodiment is essentially or part of the contribution to the prior art or all or part of the technical solution can be embodied in the form of software, the computer software is stored in a storage medium, Several instructions are included to make a computer device (which may be a personal computer, a server, or a network device, etc.) execute all or part of the steps of the methods described in various embodiments of the present disclosure. The aforementioned storage medium includes: U disk, mobile hard disk, read-only memory (Read-only memory, ROM), random access memory (Random access memory, RAM), magnetic disk or optical disk, and other various media that can store program codes.

Those skilled in the art can clearly understand that for the convenience and brevity of the description, the identification content of the specific execution of the above-described system and device can refer to the corresponding process in the foregoing method embodiment.

The embodiments of the present invention have been described in detail above with reference to the accompanying drawings, but the present invention is not limited to the above embodiments. Even if various changes are made to the present invention, if these changes fall within the scope of the claims of the present invention and equivalent technologies, they still fall within the protection scope of the present invention.

Claims (10)

1. A method for obtaining standard temperature in a coke oven carbonization chamber, characterized in that it comprises: Arrange coded cables in the carbonization chamber of the coke oven, and set identifiable carbonization chamber numbers on the coded cables; A data acquisition device is installed on the coal loading car or coke pushing car, and the data collecting device is used to collect the carbonization chamber number, coal charging action signal and coke pushing action signal data where the coal charging car or coke pushing car is located, and will collect The data is transmitted to the control device; The control device calculates the coking time according to the number of the carbonization chamber, the coal loading action signal and the coke pushing action signal data; According to the coking time, the standard carbonization chamber temperature curve was fitted by multi-order Gaussian function to obtain the standard temperature of the coke oven carbonization chamber. 2. the acquisition method of coke oven carbonization chamber standard temperature as claimed in claim 1, is characterized in that, described according to coking time, by multi-order Gaussian function, standard carbonization chamber temperature curve is fitted and further comprises: The side furnace carbonization chamber and other carbonization chambers of the coke oven were fitted with standard temperature curves respectively. 3. the acquisition method of coke oven carbonization chamber standard temperature as claimed in claim 2 is characterized in that, the side furnace carbonization chamber of coke oven carries out standard temperature curve fitting as follows: Y=a11*EXP(-((x-b11)/c11)*((x-b11)/c11)) +a12*EXP(-(((x-b12)/c12)*(x-b12)/c12)) +a13*EXP(-(((x-b13)/c13)*(x-b13)/c13)) +a14*EXP(-(((x-b14)/c14)*(x-b14)/c14)) Among them, x is the coking time, and a11~a14, b11~b14, c11~c14 are coefficients obtained by iterative calculation of multi-order Gaussian functions. 4. the acquisition method of coke oven carbonization chamber standard temperature as claimed in claim 2 is characterized in that, in coke oven, the carbonization chamber except side furnace carbonization chamber carries out standard temperature curve fitting as follows: y=a1*EXP(-((x-b1)/c1)*((x-b1)/c1)) +a2*EXP(-(((x-b2)/c2)*(x-b2)/c2)) +a3*EXP(-(((x-b3)/c3)*(x-b3)/c3)) +a4*EXP(-(((x-b4)/c4)*(x-b4)/c4)) Among them, x is the coking time, and a1~a4, b1~b4, c1~c4 are coefficients obtained by iterative calculation of multi-order Gaussian functions. 5. the method for obtaining standard temperature of coke oven carbonization chamber as claimed in claim 1, is characterized in that, also comprises obtaining whole furnace temperature of coke oven: Real-time collection of temperature data in the carbonization chamber, judging the air flow direction of the fire path, and obtaining the current type of fire path; According to the temperature data collected in the carbonization chamber, the quality analysis of the temperature collection equipment is carried out to obtain effective temperature data; Summarize the effective temperature data according to the coal loading sequence, and calculate the fitting temperature of each sequence; Take the average value of the fitting temperature of all serial sequences to obtain the temperature of the whole furnace. 6. The method for obtaining the standard temperature of the carbonization chamber of a coke oven as claimed in claim 5, further comprising screening the temperature of the entire furnace obtained by time, selecting the temperature at the preset time after the reversing of the fire path, as the entire furnace temperature. Furnace fitting temperature. 7. The method for obtaining the standard temperature of the carbonization chamber of the coke oven according to claim 6, wherein the range of the preset time is 5 minutes to 10 minutes. 8. The method for obtaining the standard temperature of the carbonization chamber of coke oven as claimed in claim 6, characterized in that, the compensation control of coal moisture, gas calorific value, gas flow, ambient temperature and coal loading is used to simulate the temperature of the entire furnace. Adjust the combined temperature, output the return gas pressure increment, and make real-time compensation for the return gas pressure adjustment system. 9. A device for obtaining the standard temperature of the carbonization chamber of a coke oven, characterized in that it comprises: The data collection module is used to collect the number of the carbonization chamber where the coal loading truck or the coke pushing truck is located, the data of the coal loading action signal and the coke pushing action signal, and transmit the collected data to the control module; The control module calculates the coking time according to the number of the carbonization chamber, the coal charging action signal and the coke pushing action signal data; The temperature fitting module fits the temperature curve of the standard carbonization chamber through a multi-order Gaussian function according to the coking time to obtain the standard temperature of the carbonization chamber of the coke oven. 10. A storage medium storing computer-readable instructions, characterized in that, when the computer-readable instructions are executed by one or more processors, one or more processors are executed as in any of claims 1-8. A step in the method for obtaining the standard temperature of a coke oven carbonization chamber.

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