CN111488689B - Correction conversion method for straight-going temperature of coke oven - Google Patents
Correction conversion method for straight-going temperature of coke oven Download PDFInfo
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- CN111488689B CN111488689B CN202010296251.4A CN202010296251A CN111488689B CN 111488689 B CN111488689 B CN 111488689B CN 202010296251 A CN202010296251 A CN 202010296251A CN 111488689 B CN111488689 B CN 111488689B
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- 239000000571 coke Substances 0.000 title claims abstract description 92
- 238000000034 method Methods 0.000 title claims abstract description 62
- 238000012937 correction Methods 0.000 title claims abstract description 25
- 238000006243 chemical reaction Methods 0.000 title claims abstract description 13
- 238000001816 cooling Methods 0.000 claims abstract description 169
- 238000002485 combustion reaction Methods 0.000 claims abstract description 161
- 238000009529 body temperature measurement Methods 0.000 claims abstract description 77
- 230000008569 process Effects 0.000 claims abstract description 13
- 238000013178 mathematical model Methods 0.000 claims description 6
- 238000010438 heat treatment Methods 0.000 claims description 4
- 238000004364 calculation method Methods 0.000 abstract description 9
- 238000005259 measurement Methods 0.000 abstract description 7
- 238000007599 discharging Methods 0.000 abstract description 4
- 239000003344 environmental pollutant Substances 0.000 abstract description 4
- 231100000719 pollutant Toxicity 0.000 abstract description 4
- 230000009286 beneficial effect Effects 0.000 abstract description 2
- 230000006872 improvement Effects 0.000 description 7
- 230000002411 adverse Effects 0.000 description 2
- 239000003245 coal Substances 0.000 description 2
- 230000009467 reduction Effects 0.000 description 2
- 241000295146 Gallionellaceae Species 0.000 description 1
- 238000003763 carbonization Methods 0.000 description 1
- 230000000052 comparative effect Effects 0.000 description 1
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- 230000000694 effects Effects 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
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- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10B—DESTRUCTIVE DISTILLATION OF CARBONACEOUS MATERIALS FOR PRODUCTION OF GAS, COKE, TAR, OR SIMILAR MATERIALS
- C10B57/00—Other carbonising or coking processes; Features of destructive distillation processes in general
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P20/00—Technologies relating to chemical industry
- Y02P20/10—Process efficiency
- Y02P20/129—Energy recovery, e.g. by cogeneration, H2recovery or pressure recovery turbines
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Abstract
The invention provides a correction conversion method for the straight-line temperature of a coke oven, which comprises the following steps: measuring time t 1 Vertical flame path temperature T of combustion chamber No. 1 1 temperature measurement As the straight-through temperature of the combustion chamber No. 1; the temperature measuring trolley moves to the X number moment t of the combustion chamber according to the moving speed V x Lower measurement temperature T X temperature measurement Obtaining a time t according to the cooling down temperature curve 1 And time t x Cooling down temperature value T between X cooling down The method comprises the steps of carrying out a first treatment on the surface of the Finally, the standard straight-going temperature T of the combustion chamber X is obtained X number ＝T X temperature measurement +T X cooling down The straight-through temperatures of all the combustion chambers are obtained in turn. The invention has different correction values for each combustion chamber number, eliminates the error of the original calculation method without grouping calculation, adopts an automatic temperature measuring device, has high measurement precision, provides conditions for fine adjustment of the thermal system of the coke oven, is beneficial to control the uniform and stable temperature of the coke oven, and can further improve the coke yield and reduce the pollutant discharge amount in the coke discharging process.
Description
Technical Field
The invention belongs to the field of coke oven straight-going temperature measurement, and particularly relates to a correction conversion method of coke oven straight-going temperature.
Background
The straight-through temperature of the coke oven is an important index which is necessary to be measured in the coke oven thermal management and is a main index of the coke oven thermal management, and directly reflects the heating working state of each combustion chamber of the coke oven, and in the coke oven production process, the straight-through temperature is generally measured once every 4 hours, for example, 61 combustion chambers exist in the coke oven group carbonization chamber of 1-200 holes (60 holes are taken as an example), 122 temperature of the straight-through flame channels are measured each time, when manual temperature measurement is performed, 122 temperature of the straight-through flame channels cannot be measured simultaneously, only 61 temperature of the straight-through flame channels (or 61 temperature of the coke oven side standard straight-through flame channels) can be measured sequentially from a side coal tower of the coke oven to a coke oven end direction (or from a coke side coal tower of the coke oven) in the coke end direction, the straight-through flame channel exchange time of all the combustion chambers is the same time controlled by one coke oven exchanger, but the measured temperature values are sequentially measured, the measured in sequence, the time is different, the temperature reduction degree is different in a temperature measurement time of several minutes, the original correction method is that the measured 61 measured temperature values or the measured temperature of 4 sets are measured at the same time, and the measured temperature of each time is equal to the measured temperature of the straight-through temperature exchange time of the coke oven side of the straight-through temperature exchange time of 4 seconds (or the straight-through temperature conversion method, and the corrected value is obtained by cooling the measured temperature value of the measured values of the measured temperature values of the straight-through the temperature exchange time of the coke oven).
The correction method has the advantages that the temperature of a plurality of numbers exists in each group, the time difference exists when the numbers are measured, a fixed cooling reduction value is added, errors caused by measurement at different moments exist, errors caused by different temperature measuring speeds of different personnel exist, the errors can reach more than 10 ℃, the influence is brought to the fine adjustment of the thermal system of the coke oven, the uniform and stable temperature of the coke oven is not facilitated, the coke yield is further improved, and the pollutant emission in the coke discharging process is reduced.
Disclosure of Invention
In order to solve the defects that the inaccurate measurement of the straight-going temperature brings adverse effects to the fine adjustment of the thermal system of the coke oven, such as adverse to the uniform and stable temperature of the coke oven, further improves the coke yield and reduces the pollutant emission in the coke discharging process,the invention provides a correction conversion method of coke oven straight temperature, which is to individually compensate and correct temperature values of vertical flame path temperature of each combustion chamber, and specifically comprises the following steps: the method is to carry out independent compensation correction on the temperature of the vertical flame path of each combustion chamber, and specifically comprises the following steps: (1) Measuring the temperature measurement time t 1 Vertical flame path temperature T of combustion chamber No. 1 1 temperature measurement As the straight-through temperature of combustor No. 1; (2) Time t when temperature measuring trolley advances to combustion chamber X number according to advancing speed V x Measuring the temperature to obtain T X temperature measurement From the cooling down temperature curve T (T), a time T is obtained 1 And time t x Cooling down temperature value T between X cooling down The method comprises the steps of carrying out a first treatment on the surface of the Finally, the standard straight-going temperature T of the final combustion chamber X number is obtained X number ＝T X temperature measurement +T X cooling down The method comprises the steps of carrying out a first treatment on the surface of the (3) And compensating and correcting calculation in sequence to obtain the standard straight-going temperature of all the combustion chambers.
As an improvement, all measured temperatures are obtained and measured by an automatic temperature measuring device; wherein time t x ＝S X V; wherein V is the travelling speed of the temperature measuring trolley, S X The distance between the combustion chamber X and the combustion chamber 1 is the time t 1 X is a positive integer greater than 1 for a fixed value of the coke oven exchange time interval.
As improvement, the cooling down temperature curve T (T) is to select A multiplied by N number of combustion chambers as a measuring range, measure the temperature once every 0.5-1.5min, continuously measure 20-30min, take the average value of the temperature under the same measuring time, draw a temperature T-time T cooling curve as a standard cooling down temperature curve T (T) in a period of time, draw once again according to the above-mentioned mode at intervals of 4-6 months, update the cooling down temperature curve of the previous time, wherein N is a positive integer, and A is the serial number of the coke oven.
As an improvement, the number of the selected combustion chambers is 5 XN, wherein the coke ovens are numbered by adopting 5-2 pushing coke serial numbers, and 5 is the serial number of the coke ovens.
As improvement, the cooling down temperature curve T (T) is obtained by measuring a temperature value of each combustion chamber within 20-30min from the beginning of coke oven exchange time at intervals of 0.5-1.5min, curve fitting, drawing each temperature T-time T cooling curve corresponding to each combustion chamber, taking the temperature T-time T cooling curve as the cooling down temperature curve T (T) of each combustion chamber, drawing again at intervals of 4-6 months according to the mode, and updating the cooling down temperature curve of the previous time.
As an improvement, the coke oven combustion chamber is 1-200 holes, and the time t is 1 From 0 to 100s, preferably 20s.
Simultaneously, a correction conversion method for the straight-through temperature of the coke oven is also provided,
(1) Establishing a mathematical model
The serial numbers of the combustion chambers to be measured are calibrated to be 1, 2 and … … X, X + … … N, and the distances from the serial number of the combustion chamber 2 to the serial number of the combustion chamber N to the serial number of the combustion chamber 1 are calibrated to be S 2 、S 3 ……S X 、S X+1 ……S N The method comprises the steps of carrying out a first treatment on the surface of the Recording the speed of the travelling trolley in the travelling process as V;
(2) Establishing a standard cooling descent curve T (T) of the combustion chamber
Selecting A multiplied by N number of fixed combustion chambers as a measuring range, measuring the temperature once every 0.5-1.5min, continuously measuring for 20-30min, taking the temperature as an average value of the temperature under the same measuring time, drawing a temperature T-time T cooling curve as a standard cooling down temperature curve T (T) in a period, drawing once again at intervals of 4-6 months in the mode, and updating the cooling down temperature curve of the previous time, wherein N is a positive integer, and A is a serial number of a coke oven;
(3) Measuring the straight-through temperature of a coke oven
Measuring time t 1 At the time, the vertical flame path temperature T of the combustion chamber No. 1 1 temperature measurement As the straight-through temperature of combustor No. 1;
calculating the straight running temperature of the combustion chamber No. 2, and enabling the temperature measuring trolley to run to the moment t of the combustion chamber No. 2 according to the running speed V 2 Measuring the temperature to obtain T 2 temperature measurement Wherein t is 2＝ S 2 V, obtaining a time T according to the standard cooling down temperature curve T (T) in the step (2) 1 And time t 2 Cooling down temperature value T between Cooling down No. 2 The method comprises the steps of carrying out a first treatment on the surface of the Standard straight to final combustor No. 2Line temperature T No. 2 ＝T 2 temperature measurement +T Cooling down No. 2 ；
Calculating the straight-going temperature of the combustion chamber X, and enabling the temperature measuring trolley to travel to the moment t of the combustion chamber X according to the traveling speed V x Measuring the temperature to obtain T X temperature measurement Wherein t is x＝ S x V, obtaining a time T according to the standard cooling down temperature curve T (T) in the step (2) 1 And time t x Cooling down temperature value T between X cooling down The method comprises the steps of carrying out a first treatment on the surface of the Obtaining standard straight-through temperature T of final combustion chamber X X number ＝T X temperature measurement +T X cooling down ；
And sequentially obtaining the straight-going temperature of each combustion chamber until all the combustion chamber compensation corrections are finished.
As an improvement, the number of the selected combustion chambers in the step (2) is 5 XN, wherein the coke ovens adopt 5-2 pushing coke serial numbers, 5 is the serial number of the coke ovens, and the time t is 1 From 0 to 100s, preferably 20s.
In addition, a correction conversion method for the straight-through temperature of the coke oven is also provided,
(1) Establishing a mathematical model
The serial numbers of the combustion chambers to be measured are calibrated to be 1, 2 and … … X, X + … … N, and the distances from the combustion chamber No. 2 to the combustion chamber N to the combustion chamber No. 1, which are sequentially measured, are calibrated to be S 2 、S 3 ……S X 、S X+1 ……S N The method comprises the steps of carrying out a first treatment on the surface of the Recording the speed of the travelling trolley in the travelling process as V;
(2) Establishing a cooling down temperature curve T (T) of each combustion chamber
Measuring primary temperature of the combustion chamber No. 1 in each interval of 0.5-1.5min within a time period of 20-30min after the exchange of the distance coke oven by adopting an automatic temperature measuring device, drawing a real-time smooth cooling curve, and performing curve fitting to obtain a cooling dropping temperature curve T of the combustion chamber No. 1 1 (t)＝f(t)+a 1 Wherein a is 1 In order to verify that the parameter is a fixed value, f (t) is a multiple function of the temperature t, the heating system of the combustion chamber is kept unchanged in the whole temperature measuring process, the coke pushing condition is kept normal, and the temperature is measured in the normal maintenance timeAn amount of;
sequentially obtaining cooling down temperature curves T of each combustion chamber i according to the method of the combustion chamber No. 1 under the condition of keeping the measuring environment unchanged i (t)＝f(t)+a i Where i is the number of the combustion chamber, a i F (t) is a multiple function of the temperature t for checking that the parameter is a fixed value until all cooling down temperature curves of the combustion chamber are completed; drawing again according to the mode at intervals of 4-6 months, and updating the standard cooling temperature-reducing curve of the previous time;
(3) Measuring the straight-through temperature of a coke oven
Measuring time t 1 At the time, the vertical flame path temperature T of the combustion chamber No. 1 1 temperature measurement As the straight-through temperature of combustor No. 1;
calculating the straight running temperature of the combustion chamber No. 2, and enabling the temperature measuring trolley to run to the moment t of the combustion chamber No. 2 according to the running speed V 2 Measuring the temperature to obtain T 2 temperature measurement Wherein t is 2＝ S 2 V according to the cooling down temperature curve T 2 (t) obtaining a time t 1 And time t 2 Cooling down temperature value T between Cooling down No. 2 The method comprises the steps of carrying out a first treatment on the surface of the Obtaining the standard straight-going temperature T of the final combustion chamber No. 2 No. 2 ＝T 2 temperature measurement +T Cooling down No. 2 ；
Calculating the straight-going temperature of the combustion chamber X, and enabling the temperature measuring trolley to travel to the moment t of the combustion chamber X according to the traveling speed V x Measuring the temperature to obtain T X temperature measurement Wherein t is x＝ S x V according to the cooling down temperature curve T x (t) obtaining a time t 1 And time t x Cooling down temperature value T between X cooling down The method comprises the steps of carrying out a first treatment on the surface of the Obtaining standard straight-through temperature T of final combustion chamber X X number ＝T X temperature measurement +T X cooling down ；
And sequentially obtaining the straight-going temperature of each combustion chamber until all the combustion chamber compensation corrections are finished.
As an improvement, the coke oven combustion chamber is 1-200 holes, and the time t is 1 From 0 to 100s, preferably 20s.
The beneficial effects are that: the correction conversion method of the coke oven straight-line temperature provided by the invention is used for carrying out independent compensation correction temperature value on the vertical flame path temperature of each combustion chamber, so that each combustion chamber number has a different correction value, grouping calculation is not carried out any more, errors brought by the original calculation method are eliminated, the running speed of an automatic temperature measuring device is uniform and consistent, errors caused by different running speeds during measurement by different people are also eliminated, the straight-line temperature measurement of the coke oven is higher than the manual measurement accuracy in principle, the stability and the repeatability are better, conditions are provided for fine adjustment of the thermal system of the coke oven, the uniform and stable control of the coke oven temperature is facilitated, the coke yield can be further improved, and the pollutant discharge amount in the coke discharging process is reduced.
Drawings
FIG. 1 is a schematic graph showing the standard cooling down temperature curve of the combustion chamber in example 1 of the present invention.
FIG. 2 is a schematic graph showing the cooling down temperature curves of a plurality of groups of combustors in example 2 of the present invention. Wherein 1-5 are numbered as cooling temperature decrease curves for combustion chambers 1-5.
Detailed Description
The drawings of the invention are further described below in conjunction with the embodiments.
The provided correction conversion method for the straight-through temperature of the coke oven comprises the following steps:
(1) Establishing a mathematical model
The serial numbers of the combustion chambers to be measured are calibrated to be 1, 2 and … … X, X + … … N, and the distances from the serial number of the combustion chamber 2 to the serial number of the combustion chamber N to the serial number of the combustion chamber 1 are calibrated to be S 2 、S 3 ……S X 、S X+1 ……S N The method comprises the steps of carrying out a first treatment on the surface of the Recording the speed of the travelling trolley in the travelling process as V;
(2) Establishing a standard cooling descent curve T (T) of the combustion chamber
Selecting A multiplied by N number of fixed combustion chambers as a measuring range, measuring the temperature once every 0.5-1.5min, continuously measuring for 20-30min, taking the temperature as an average value of the temperature under the same measuring time, drawing a temperature T-time T cooling curve as a standard cooling down temperature curve T (T) in a period, drawing once again at intervals of 4-6 months in the mode, and updating the cooling down temperature curve of the previous time, wherein N is a positive integer, and A is a serial number of a coke oven;
(3) Measuring the straight-through temperature of a coke oven
Measuring time t 1 At the time, the vertical flame path temperature T of the combustion chamber No. 1 1 temperature measurement As the straight-through temperature of combustor No. 1;
calculating the straight running temperature of the combustion chamber No. 2, and enabling the temperature measuring trolley to run to the moment t of the combustion chamber No. 2 according to the running speed V 2 Measuring the temperature to obtain T 2 temperature measurement Wherein t is 2＝ S 2 V, obtaining a time T according to the standard cooling down temperature curve T (T) in the step (2) 1 And time t 2 Cooling down temperature value T between Cooling down No. 2 The method comprises the steps of carrying out a first treatment on the surface of the Obtaining the standard straight-going temperature T of the final combustion chamber No. 2 No. 2 ＝T 2 temperature measurement +T Cooling down No. 2 ；
Calculating the straight-going temperature of the combustion chamber X, and enabling the temperature measuring trolley to travel to the moment t of the combustion chamber X according to the traveling speed V x Measuring the temperature to obtain T X temperature measurement Wherein t is x＝ S x V, obtaining a time T according to the standard cooling down temperature curve T (T) in the step (2) 1 And time t x Cooling down temperature value T between X cooling down The method comprises the steps of carrying out a first treatment on the surface of the Obtaining standard straight-through temperature T of final combustion chamber X X number ＝T X temperature measurement +T X cooling down ；
And sequentially obtaining the straight-going temperature of each combustion chamber until all the combustion chamber compensation corrections are finished.
Further, in the step (2), the number of the selected combustion chambers is 5 XN, wherein the coke ovens are numbered by adopting 5-2 pushing coke serial numbers, and 5 is the serial number of the coke ovens.
Further, the abscissa of the cooling down temperature curve is the time axis from the start of the coke oven exchange time, and the ordinate is the measured temperature after the start of the coke oven exchange time. Time t 1 The fixed value may be a time such as 0-300s after the coke oven exchange time, preferably time t 1 And the gas in the pipeline can be completely used after the valve is closed for 0-100s, preferably 20s.
Example 1
When the number of the coke oven combustion chambers is 60, 61 combustion chambers are adopted, and the straight-line temperature of each combustion chamber is calculated as follows: taking time t 1 For a fixed value after coke oven exchange, preferably 20s, a cooling down temperature value curve of all combustion chambers is obtained according to the modeling mode,
n=1, namely 5 fixed combustion chambers are selected, 5 is serial number, temperature is measured once every 1min, the temperature is measured continuously for 27min, the average value of 6 groups of temperature data measured once is taken as a temperature value, a temperature T-time T cooling curve is drawn as a standard cooling down temperature curve T (T) in a period, the cooling down temperature curve is drawn once again at intervals of 4-6 months according to the mode, and the cooling down temperature curve of the previous time is updated, wherein N is a positive integer.
For a specific illustration of the invention, the standard cooling down temperature profile of the final combustion chamber that has been obtained is given in fig. 1.
Calculating the straight-going temperature of the combustion chamber X, and enabling the temperature measuring trolley to travel to the moment t of the combustion chamber X according to the traveling speed V x Measuring the temperature to obtain T X temperature measurement Wherein t is x＝ S x V, obtaining the time T according to the standard cooling down temperature curve T (T) 1 And time t x Cooling down temperature value T between X cooling down The method comprises the steps of carrying out a first treatment on the surface of the Obtaining standard straight-through temperature T of final combustion chamber X X number ＝T X temperature measurement +T X cooling down The method comprises the steps of carrying out a first treatment on the surface of the For example, see FIG. 1 where X is 2, time t 1 And t 2 The corresponding temperature drop cooling values can be obtained directly from fig. 1. Specifically, the results were obtained as follows:
T 2 ＝T 2 temperature measurement +T 2 cooling down
T 3 ＝T 3 temperature measurement +T 3 cooling down
T 4 ＝T 4 temperature measurement +T 4 cooling down
T 5 ＝T 5 temperature measurement +T 5 cooling down
……
T 60 ＝T 60 temperature measurement +T 60 cooling down
T 61 ＝T 61 temperature measurement +T 61 cooling down
T as described above 1 cooling down ，T 2 cooling down ，T 3 cooling down ……T 61 cooling down The accuracy is higher by the calculation of the drawn cooling down temperature curve shown in figure 1.
As one of the specific embodiments of the invention, when the cooling down temperature curves are established, the cooling down temperature curves of all the combustion chambers can be drawn, and compensation calculation can be carried out corresponding to each group of measured temperatures. The method comprises the following steps:
(1) Establishing a mathematical model
The serial numbers of the combustion chambers to be measured are calibrated to be 1, 2 and … … X, X + … … N, and the distances between the combustion chamber after the number 2 and the combustion chamber 1 are sequentially measured and calibrated to be S 2 、S 3 ……S X 、S X+1 ……S N The method comprises the steps of carrying out a first treatment on the surface of the Recording the speed of the travelling trolley in the travelling process as V;
(2) Establishing a cooling down temperature curve T (T) of each combustion chamber
Measuring primary temperature of the combustion chamber No. 1 in each interval of 0.5-1.5min within a time period of 20-30min after the exchange of the distance coke oven by adopting an automatic temperature measuring device, drawing a real-time smooth cooling curve, and performing curve fitting to obtain a cooling temperature curve T of the combustion chamber No. 1 1 (t)＝f(t)+a 1 Wherein a is 1 In order to verify that the parameter is a fixed value, f (t) is a multiple function of the temperature t, the heating system of the combustion chamber is kept unchanged in the whole temperature measuring process, the coke pushing condition is kept normal, and the temperature is measured in the normal overhaul time;
sequentially obtaining cooling down temperature curves T of the combustion chamber i according to the method of the combustion chamber 1 under the condition of keeping the measuring environment unchanged i (t)＝f(t)+a i Where i is the number of the combustion chamber, a i F (t) is a multiple function of the temperature t for checking that the parameter is a fixed value until all cooling down temperature curves of the combustion chamber are completed; re-drawing the picture at intervals of 4-6 months according to the mode, and updatingA previous cooling down temperature profile;
(3) Measuring the straight-through temperature of a coke oven
Measuring time t 1 At the time, the vertical flame path temperature T of the combustion chamber No. 1 1 temperature measurement As the straight-through temperature of combustor No. 1;
calculating the straight running temperature of the combustion chamber No. 2, and enabling the temperature measuring trolley to run to the moment t of the combustion chamber No. 2 according to the running speed V 2 Measuring the temperature to obtain T 2 temperature measurement Wherein t is 2＝ S 2 V according to the cooling down temperature curve T 2 (t) obtaining a time t 1 And time t 2 Cooling down temperature value T between Cooling down No. 2 The method comprises the steps of carrying out a first treatment on the surface of the Obtaining the standard straight-going temperature T of the final combustion chamber No. 2 No. 2 ＝T 2 temperature measurement +T Cooling down No. 2 ；
Calculating the straight-going temperature of the combustion chamber X, and enabling the temperature measuring trolley to travel to the moment t of the combustion chamber X according to the traveling speed V x Measuring the temperature to obtain T X temperature measurement Wherein t is x＝ S x V according to the cooling down temperature curve T x (t) obtaining a time t 1 And time t x Cooling down temperature value T between X cooling down The method comprises the steps of carrying out a first treatment on the surface of the Obtaining standard straight-through temperature T of final combustion chamber X X number ＝T X temperature measurement +T X cooling down ；
And sequentially obtaining the straight-going temperature of each combustion chamber until all the combustion chamber compensation corrections are finished.
Further, the coke oven combustion chamber is 1-200 holes, and the time t is 1 From 0 to 100s, preferably 20s.
Further, the abscissa of the cooling down temperature curve is the time axis from the start of the coke oven exchange time, and the ordinate is the measured temperature after the start of the coke oven exchange time. Time t 1 The fixed value may be a time of 0 to 300 seconds after the coke oven exchange time.
Example 2
When the number of the coke oven combustion chambers is 60, 61 combustion chambers are adopted, and the straight-line temperature of each combustion chamber is calculated as follows: taking time t 1 For a fixed value after coke oven exchange, preferably 20s, according to the modeling method described aboveA cooling down temperature profile is obtained for all combustion chambers,
measuring the temperature of all the combustion chambers every 1min, continuously measuring for 27min, taking the temperature value and time measured each time, and drawing a temperature T-time ttooling curve as a corresponding combustion chamber cooling down temperature curve T in a period x And (t) drawing again according to the mode at intervals of 4-6 months, and updating the cooling down temperature curve of the previous time, wherein N is a positive integer.
Calculating the straight-going temperature of the combustion chamber X, and enabling the temperature measuring trolley to travel to the moment t of the combustion chamber X according to the traveling speed V x Measuring the temperature to obtain T X temperature measurement Wherein t is x＝ S x V according to the cooling down temperature curve T x (t) obtaining a time t 1 And time t x Cooling down temperature value T between X cooling down The method comprises the steps of carrying out a first treatment on the surface of the Obtaining standard straight-through temperature T of final combustion chamber X X number ＝T X temperature measurement +T X cooling down The method comprises the steps of carrying out a first treatment on the surface of the For a specific description of the invention, the obtained cooling down temperature profile T of 5 sets of exemplary lower combustors is given in FIG. 2 x (t). In FIG. 2, a time t is given 1 By calculating t x＝ S x V, t under different curves 1 And t x The corresponding temperature drop cooling value can be obtained directly from fig. 2. The calculation results are as follows:
T 2 ＝T 2 temperature measurement +T 2 cooling down
T 3 ＝T 3 temperature measurement +T 3 cooling down
T 4 ＝T 4 temperature measurement +T 4 cooling down
T 5 ＝T 5 temperature measurement +T 5 cooling down
……
T 60 ＝T 60 temperature measurement +T 60 cooling down
T 61 ＝T 61 temperature measurement +T 61 cooling down
T as described above 1 cooling down ，T 2 cooling down ，T 3 coolingDescent down ……T 61 cooling down The accuracy is higher by the calculation of the cooling down value curve shown in figure 2.
Comparative group 1
The conventional straight-line temperature correction conversion method is to divide the measured 61 data into 4 or 5 groups, add a certain fixed cooling drop value (i.e. correction value) of the group to each group of measured values, and convert the measured 61 temperature values to the temperature at the same time of 20 seconds after the exchange time, thus obtaining the side or focal side straight-line temperature of the coke oven.
Namely (e.g. group 4): the cooling down values are respectively T Stage 1 cooling down 、T 2 stage cooling down 、T 3 stage cooling down 、T 4-stage cooling down 。
The number 1-15 combustion chambers are a first group:
T 1 ＝T 1 temperature measurement +T Stage 1 cooling down
T 2 ＝T 2 temperature measurement +T Stage 1 cooling down
T 3 ＝T 3 temperature measurement +T Stage 1 cooling down
……
T 14 ＝T 14 temperature measurement +T Stage 1 cooling down
T 15 ＝T 15 temperature measurement +T Stage 1 cooling down
The number 16 to 30 combustion chambers are of a second group:
T 16 ＝T 16 temperature measurement +T 2 stage cooling down
T 17 ＝T 17 temperature measurement +T 2 stage cooling down
T 18 ＝T 18 temperature measurement +T 2 stage cooling down
……
T 29 ＝T 29 temperature measurement +T 2 stage cooling down
T 30 ＝T 30 temperature measurement +T 2 stage cooling down
The third group of the combustion chambers from 31 to 45 are:
T 31 ＝T 31 temperature measurement +T 3 stage cooling down
T 32 ＝T 32 temperature measurement +T 3 stage cooling down
T 34 ＝T 34 temperature measurement +T 3 stage cooling down
……
T 44 ＝T 44 temperature measurement +T 3 stage cooling down
T 45 ＝T 45 temperature measurement +T 3 stage cooling down
The fourth group of 46-61 combustion chambers:
T 46 ＝T 46 temperature measurement +T 4-stage cooling down
T 47 ＝T 4 temperature measurement +T 4-stage cooling down
T 48 ＝T 48 temperature measurement +T 4-stage cooling down
……
T 60 ＝T 60 temperature measurement +T 4-stage cooling down
T 61 ＝T 61 temperature measurement +T 4-stage cooling down
The cooling down values are respectively T Stage 1 cooling down 、T 2 stage cooling down 、T 3 stage cooling down 、T 4-stage cooling down During measurement, the error caused by different personnel temperature measuring speeds or different time measuring speeds is not measured at one moment, the error can reach more than 10 ℃, and compared with the embodiment 1 or 2, the accuracy is much lower, and compared with the embodiment 1 or 2, the invention has higher accuracy.
The above examples illustrate only a few embodiments of the invention, which are described in detail and are not to be construed as limiting the scope of the invention. It should be noted that it will be apparent to those skilled in the art that several variations and modifications can be made without departing from the spirit of the invention, which are all within the scope of the invention. Accordingly, the scope of protection of the present invention is to be determined by the appended claims.
Claims (5)
1. A correction conversion method for the straight-through temperature of a coke oven is characterized in that:
(1) Establishing a mathematical model
The serial numbers of the combustion chambers to be measured are calibrated to be 1, 2 and … … X, X + … … N, and the distances from the serial number of the combustion chamber 2 to the serial number of the combustion chamber N to the serial number of the combustion chamber 1 are calibrated to be S 2 、S 3 ……S X 、S X+1 ……S N The method comprises the steps of carrying out a first treatment on the surface of the Recording the speed of the travelling trolley in the travelling process as V and X, N as a positive integer;
(2) Establishing standard cooling down temperature curve of combustion chamber
Selecting A multiplied by N combustion chambers as a measuring range, wherein A is the serial number of the coke oven, measuring the temperature once every 0.5-1.5min, continuously measuring for 20-30min, taking the average value of the temperature at the same measuring time as the last measured temperature, drawing a temperature T-time T cooling curve as a standard cooling down temperature curve T (T) in a period, drawing again according to the mode at intervals of 4-6 months, and updating the standard cooling down temperature curve of the previous time;
(3) Measuring the straight-through temperature of a coke oven
Measuring time t 1 At the time, the vertical flame path temperature T of the combustion chamber No. 1 1 temperature measurement As the straight-through temperature of combustor No. 1;
calculating the straight running temperature of the combustion chamber No. 2, and enabling the temperature measuring trolley to run to the moment t of the combustion chamber No. 2 according to the running speed V 2 Measuring the temperature to obtain T 2 temperature measurement Wherein t is 2 ＝S 2 V, obtaining a time T according to the standard cooling down temperature curve T (T) in the step (2) 1 And time t 2 Cooling down temperature value T between Cooling down No. 2 The method comprises the steps of carrying out a first treatment on the surface of the Obtaining the standard straight-going temperature T of the final combustion chamber No. 2 No. 2 ＝T 2 temperature measurement +T Cooling down No. 2 ；
Calculating the straight-going temperature of the combustion chamber X, and enabling the temperature measuring trolley to travel to the moment t of the combustion chamber X according to the traveling speed V x Measuring the temperature to obtain T X temperature measurement Wherein t is x ＝S x root/VObtaining a time T according to the standard cooling down temperature curve T (T) in the step (2) 1 And time t x Cooling down temperature value T between X cooling down The method comprises the steps of carrying out a first treatment on the surface of the Obtaining standard straight-through temperature T of final combustion chamber X X number ＝T X temperature measurement +T X cooling down ；
And sequentially obtaining the straight-going temperature of each combustion chamber until all the combustion chamber compensation corrections are finished.
2. The method for correcting and converting the straight-through temperature of a coke oven according to claim 1, wherein: and (2) selecting 5 XN combustion chambers, wherein the coke ovens adopt 5-2 pushing coke serial numbers, and 5 is the serial number of the coke ovens.
3. The method for correcting and converting the straight-through temperature of a coke oven according to claim 1, wherein: the coke oven combustion chamber is 1-200 holes, and the time t is 1 0-100s.
4. The method for correcting and converting a straight-through temperature of a coke oven according to claim 3, wherein: time t 1 20s.
5. A correction conversion method for the straight-through temperature of a coke oven is characterized in that:
(1) Establishing a mathematical model
The serial numbers of the combustion chambers to be measured are calibrated to be 1, 2 and … … X, X + … … N, and the distances from the serial number of the combustion chamber 2 to the serial number of the combustion chamber N to the serial number of the combustion chamber 1 are calibrated to be S 2 、S 3 ……S X 、S X+1 ……S N The method comprises the steps of carrying out a first treatment on the surface of the Recording the speed of the travelling trolley in the travelling process as V and X, N as a positive integer;
(2) Establishing standard cooling down temperature curve of combustion chamber
Measuring the temperature of the combustion chamber No. 1 once every 0.5-1.5min within a time period of 20-30min after the exchange of the coke oven by adopting an automatic temperature measuring device, drawing a real-time smooth cooling curve, and performing curve fitting to obtain a cooling dropping temperature curve T of the combustion chamber No. 1 1 (t)＝f 1 (t)+a 1 Wherein a is 1 For checking the parameter to be a fixed value, f 1 (t) is a multiple function of the temperature t, the heating system of the combustion chamber is kept unchanged in the whole temperature measuring process, the coke pushing condition is kept normal, and the temperature is measured in the normal overhaul time;
sequentially obtaining cooling down temperature curves T of the combustion chamber i according to the method of the combustion chamber 1 under the condition of keeping the measuring environment unchanged i (t)＝f i (t)+a i Where i is the number of the combustion chamber, a i For checking the parameter to be a fixed value, f i (t) is a multiple function of temperature t until all combustor cool down profiles are completed; drawing again according to the mode at intervals of 4-6 months, and updating the standard cooling temperature-reducing curve of the previous time;
(3) Measuring the straight-through temperature of a coke oven
Measuring time t 1 At the time, the vertical flame path temperature T of the combustion chamber No. 1 1 temperature measurement As the straight-through temperature of combustor No. 1;
calculating the straight running temperature of the combustion chamber No. 2, and enabling the temperature measuring trolley to run to the moment t of the combustion chamber No. 2 according to the running speed V 2 Measuring the temperature to obtain T 2 temperature measurement Wherein t is 2 ＝S 2 V according to the standard cooling down temperature curve T in step (2) 2 (t) obtaining a time t 1 And time t 2 Cooling down temperature value T between Cooling down No. 2 The method comprises the steps of carrying out a first treatment on the surface of the Obtaining the standard straight-going temperature T of the final combustion chamber No. 2 No. 2 ＝T 2 temperature measurement +T Cooling down No. 2 ；
Calculating the straight-going temperature of the combustion chamber X, and enabling the temperature measuring trolley to travel to the moment t of the combustion chamber X according to the traveling speed V x Measuring the temperature to obtain T X temperature measurement Wherein t is x ＝S x V according to the standard cooling down temperature curve T in step (2) x (t) obtaining a time t 1 And time t x Cooling down temperature value T between X cooling down The method comprises the steps of carrying out a first treatment on the surface of the Obtaining standard straight-through temperature T of final combustion chamber X X number ＝T X temperature measurement +T X cooling down ；
And sequentially obtaining the straight-going temperature of each combustion chamber until all the combustion chamber compensation corrections are finished.
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