CN114088210B - Method for measuring surface temperature distribution of oven wall of coke oven carbonization chamber - Google Patents
Method for measuring surface temperature distribution of oven wall of coke oven carbonization chamber Download PDFInfo
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- CN114088210B CN114088210B CN202010770775.2A CN202010770775A CN114088210B CN 114088210 B CN114088210 B CN 114088210B CN 202010770775 A CN202010770775 A CN 202010770775A CN 114088210 B CN114088210 B CN 114088210B
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- 239000000571 coke Substances 0.000 title claims abstract description 73
- 238000003763 carbonization Methods 0.000 title claims abstract description 70
- 238000009826 distribution Methods 0.000 title claims abstract description 43
- 238000000034 method Methods 0.000 title claims abstract description 30
- 239000003245 coal Substances 0.000 claims abstract description 116
- 238000004939 coking Methods 0.000 claims abstract description 13
- 238000002485 combustion reaction Methods 0.000 claims description 5
- 238000004519 manufacturing process Methods 0.000 abstract description 16
- 238000000197 pyrolysis Methods 0.000 description 8
- 238000005259 measurement Methods 0.000 description 4
- 238000006243 chemical reaction Methods 0.000 description 3
- 230000008602 contraction Effects 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 238000005265 energy consumption Methods 0.000 description 3
- 238000012545 processing Methods 0.000 description 3
- 230000009286 beneficial effect Effects 0.000 description 2
- 238000000605 extraction Methods 0.000 description 2
- 238000010438 heat treatment Methods 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 239000000523 sample Substances 0.000 description 2
- 238000012360 testing method Methods 0.000 description 2
- 230000005540 biological transmission Effects 0.000 description 1
- 238000010924 continuous production Methods 0.000 description 1
- 238000000354 decomposition reaction Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000002955 isolation Methods 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000002156 mixing Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 238000010517 secondary reaction Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01J—MEASUREMENT OF INTENSITY, VELOCITY, SPECTRAL CONTENT, POLARISATION, PHASE OR PULSE CHARACTERISTICS OF INFRARED, VISIBLE OR ULTRAVIOLET LIGHT; COLORIMETRY; RADIATION PYROMETRY
- G01J5/00—Radiation pyrometry, e.g. infrared or optical thermometry
- G01J5/0044—Furnaces, ovens, kilns
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01J—MEASUREMENT OF INTENSITY, VELOCITY, SPECTRAL CONTENT, POLARISATION, PHASE OR PULSE CHARACTERISTICS OF INFRARED, VISIBLE OR ULTRAVIOLET LIGHT; COLORIMETRY; RADIATION PYROMETRY
- G01J5/00—Radiation pyrometry, e.g. infrared or optical thermometry
- G01J5/02—Constructional details
- G01J5/0205—Mechanical elements; Supports for optical elements
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Abstract
The invention discloses a method for measuring the temperature distribution of the surface of a furnace wall of a coking chamber of a coke oven, which comprises the following steps: 1. opening a coal charging hole (8); 2. the temperature measuring instrument (1) is arranged on the furnace top platform (6) through an adjustable bracket, and is positioned on one side of the coal charging hole and faces the furnace wall (7) on the other side; 3. the temperature measuring instrument rotates and shoots a furnace wall image; 4. suspending the temperature measuring instrument, and moving to the other side of the coal charging hole and facing the furnace wall at one side; 5. repeating the step 3 to finish shooting of the furnace walls at two sides; 6. suspending the temperature measuring instrument and moving the temperature measuring instrument to the next coal charging hole; 7. repeating the steps 1 to 6 until shooting is completed on the furnace walls at the two sides of all the coal charging holes; 8. the temperature measuring instrument is connected with the computer to obtain the temperature distribution condition of the surface of the furnace wall of the carbonization chamber. The invention can effectively measure the temperature distribution data of the surface of the oven wall of the coke oven carbonization chamber, thereby guiding the temperature control of the vertical flame path of the coke oven by utilizing the temperature distribution data and further effectively ensuring the coking production.
Description
Technical Field
The invention relates to a method for measuring the high temperature hot work and evaluating the heat energy of a coke oven kiln, in particular to a method for measuring the temperature distribution of the surface of the oven wall of a coking chamber of a coke oven.
Background
Coke is mainly produced by pyrolysis of coal under the condition of high temperature and air isolation, and quality of coke, industrial analysis of raw material coal, element analysis of various indexes, blending ratio of various coals, production operation system of coke oven and size of coke oven are indistinct.
The pyrolysis process conditions for coal include pyrolysis temperature, pyrolysis pressure, residence time, and the like for coal. The temperature is the most important process condition for coal pyrolysis, the pyrolysis temperature is different, the depth of the pyrolysis reaction is different, and the pyrolysis reaction not only affects the reaction for generating primary decomposition products, but also affects the secondary reaction for generating volatile matters. In order to pursue the production of coke, many enterprises can produce coke at full load, even some coke ovens can produce at overload, so that the phenomena of coke pushing difficulty and large current pushing in the production process can be caused, and the normal operation of the production can be influenced in turn. The temperature control of the coke oven is often an important solution for controlling the occurrence of high current and difficult coke pushing process in the coke pushing process, and because the main heated part of the coal after being filled into the coke oven is the surface temperature of the oven wall of the coking chamber, the measurement and the knowledge of the surface temperature distribution of the oven wall of the coking chamber have important guiding effects on the control of the oven temperature, and simultaneously have important effects on the stability of the coke production quality.
The vertical flame path temperature of the coke oven in the prior art often exceeds the standard required temperature, the temperature fluctuation range is large, the coke oven often has the phenomena of higher energy consumption, immature coke or excessive fire, difficult coke pushing and large coke pushing current, the normal production of the coke oven is seriously influenced, the product quality and the yield of the coke are influenced, the gas consumption of the whole coke oven is influenced, the problem of high energy consumption of the coke oven is caused, and particularly the yield of coke production is influenced, so that the normal production of a blast furnace is influenced.
The Chinese patent invention ZL200610046655.8 discloses a device and a method for continuously measuring the temperature of a coke oven, and specifically discloses: the bottom of the coke oven hearth is provided with a temperature measuring hole, a temperature measuring probe is arranged at the top end of the temperature measuring hole, a temperature measuring target is arranged at the top end of the temperature measuring hole, the temperature measuring probe collects infrared light signals sent by the temperature measuring target, the infrared light signals are changed into electric signals through a photoelectric converter and are output to a signal processor, and the signal processor with a singlechip as a core carries out signal processing to obtain a temperature value. The thermocouple of the device is fixed on the furnace bottom, is easy to damage and is difficult to replace; meanwhile, a temperature measuring hole of 5-8 meters needs to be arranged, the smoothness of the temperature measuring hole needs to be kept so as to ensure the transmission reliability of infrared light signals, the setting difficulty is high, the measuring accuracy is greatly influenced by the pollution of the working environment, and the temperature measuring device cannot be applied to the measurement of the temperature of the furnace wall.
The invention patent ZL201710867896.7 discloses a coke oven temperature measuring robot without repeated start and stop, which solves the defects of severe working environment, more human factors, long time interval, poor measuring precision and the like in the existing coke oven temperature measuring process, but has complex software and hardware structure and high installation, use and maintenance costs, and the temperature measuring robot detects the temperature of a fire observation hole connected with a fire channel and cannot reflect the temperature distribution condition of a furnace wall.
Disclosure of Invention
The invention aims to provide a method for measuring the temperature distribution of the surface of the oven wall of a coke oven carbonization chamber, which can effectively measure the temperature distribution data of the surface of the oven wall of the coke oven carbonization chamber, so that the temperature distribution data can be used for guiding the temperature control of a vertical flame path of the coke oven, and further the coking production can be effectively ensured.
The invention is realized in the following way:
A method for measuring the temperature distribution of the surface of a furnace wall of a coking chamber of a coke oven comprises the following steps:
step 1: opening one of the coal charging holes on the carbonization chamber;
Step 2: installing a temperature measuring instrument on the furnace top platform through an adjustable bracket, so that the temperature measuring instrument is positioned on one side of the coal charging hole and faces a furnace wall on the other side of the coal charging hole in the carbonization chamber;
Step 3: starting a temperature measuring instrument, enabling the temperature measuring instrument to rotate under the drive of an adjustable bracket, and shooting an image of a furnace wall at the side part of a coal charging hole through the coal charging hole;
step 4: suspending shooting of the temperature measuring instrument, and moving the temperature measuring instrument and the adjustable bracket to the other side of the coal charging hole and facing the furnace wall at one side of the coal charging hole in the carbonization chamber;
Step 5: repeating the step 3 to complete the image shooting of the furnace walls at the two sides of the coal charging hole;
Step 6: suspending shooting of the temperature measuring instrument, and moving the temperature measuring instrument and the adjustable bracket to the next coal charging hole;
step 7: repeating the steps 1 to 6 until the temperature measuring instrument shoots all the images of the furnace walls at the two sides of the coal charging hole;
Step 8: and connecting the temperature measuring instrument to a computer to obtain the temperature distribution condition of the surface of the furnace wall of the carbonization chamber, and guiding the gas regulation and control of the combustion chamber.
After any of the coal charging holes is opened, the coal charging hole is kept open for a period of time before the temperature measuring instrument is installed.
The time period is 1-2min.
The adjustable bracket comprises a supporting rod, a bracket main body arranged on the furnace top platform and a measuring instrument platform arranged on the bracket main body; the support rod and the support main body are of telescopic structures, and two ends of the support rod are rotatably connected between the measuring instrument platform and the support main body, so that the temperature measuring instrument arranged on the measuring instrument platform can be lifted and rotated.
The range of the rotation angle when the temperature measuring instrument shoots is as follows: the included angle between the camera of the temperature measuring instrument and the furnace top platform is 10 degrees, and the included angle between the camera of the temperature measuring instrument and the furnace top platform is 80 degrees.
When the temperature measuring instrument moves among all the coal charging holes, the moving sequence of the temperature measuring instrument sequentially moves from the coal charging hole near the side of the coke oven to the coal charging hole near the side of the coke oven.
The temperature measuring instrument is symmetrically arranged at the two sides of the same coal charging hole, and faces to the furnace walls at the two sides of the carbonization chamber respectively.
The temperature measuring instrument is arranged above the outer side of the coal charging hole.
The vertical distance between the temperature measuring instrument and the coal charging hole is 1.1-1.3m, and the horizontal distance between the temperature measuring instrument and the outer edge of the coal charging hole is 10-20cm.
The sum of the image areas of the furnace walls at the two sides of all the coal charging holes obtained through shooting is not lower than 50% of the total area of the furnace walls.
Compared with the prior art, the invention has the following beneficial effects:
1. the invention adopts the temperature measuring instrument which can be adjusted in a rotating way to measure the infrared images from the top to the bottom of the surface of the oven wall of the coke oven carbonization chamber, and comprehensively knows the surface temperature distribution condition of the oven wall of the whole carbonization chamber through the oven wall images at the two sides of the plurality of coal charging holes, thereby having large measurement data quantity and high measurement precision.
2. The invention not only ensures that the temperature measuring instrument is always at a proper working environment temperature, but also ensures the effectiveness of photographing the surface of the furnace wall because the temperature measuring instrument is arranged on the bracket above the furnace top platform and the photographing is carried out from top to bottom through the coal charging hole.
3. The invention can better understand the working state of the coke oven temperature system through the temperature distribution on the surface of the oven wall, is more convenient for controlling the coke oven temperature, can effectively ensure the coke maturity and the coke quality in the coking production process, and effectively ensure the continuous production of the coke oven, thereby reducing the gas consumption and the coking energy consumption in the coking production process, reducing the occurrence of difficult coke pushing and large coke pushing current, being beneficial to improving the coke yield, reducing the production cost and improving the economic benefit of enterprises.
According to the invention, through the shot infrared image of the surface of the oven wall of the coke oven carbonization chamber, the temperature distribution condition of the surface of the oven wall of the coke oven carbonization chamber can be comprehensively known, so that the temperature control of the vertical flame path of the coke oven can be guided by utilizing the temperature distribution data, and further, the coking production is effectively ensured and the coke quality is improved.
Drawings
FIG. 1 is a flow chart of a method for measuring the temperature distribution of the surface of a furnace wall of a coke oven carbonization chamber;
FIG. 2 is an operating state diagram of a method for measuring the temperature distribution of the surface of a furnace wall of a coke oven carbonization chamber according to the invention;
FIG. 3 is a schematic view of the structure of a coal charging hole of a coking chamber of a coke oven.
In the figure, 1 temperature measuring instrument, 2 computer, 3 measuring instrument platform, 4 bracing piece, 5 support main part, 6 furnace roof platform, 7 furnace wall, 8 coal charging hole.
Detailed Description
The invention will be further described with reference to the drawings and the specific examples.
Referring to fig. 1 and 2, a method for measuring the temperature distribution of the surface of a furnace wall of a carbonization chamber of a coke oven comprises the following steps:
Step 1: one of the coal charging holes 8 on the carbonization chamber is opened, after the coal charging hole 8 is opened, the coal charging hole 8 is kept in an opened state in a period of time before the temperature measuring instrument 1 is installed, so that the heat flow at the coal charging hole 8 is stable, and the accuracy and the effect of shooting are prevented from being influenced.
Preferably, the one time period is 1-2min.
Step 2: the temperature measuring instrument 1 is arranged on the furnace top platform 6 through an adjustable bracket, so that the temperature measuring instrument 1 is positioned on one side of the coal charging hole 8 and faces the furnace wall 7 on the other side of the coal charging hole 8 in the carbonization chamber.
The adjustable bracket comprises a supporting rod 4, a bracket main body 5 arranged on a furnace top platform 6 and a measuring instrument platform 3 arranged on the bracket main body 5; the supporting rod 4 and the bracket main body 5 are of telescopic rod structures, and two ends of the supporting rod 4 are rotatably connected between the measuring instrument platform 3 and the bracket main body 5 through rotating parts such as a rotating shaft and a bearing thereof, so that the temperature measuring instrument 1 arranged on the measuring instrument platform 3 can be lifted and rotated. Preferably, the support rod 4 and the support body 5 can be connected by a rod member sleeved in a hydraulic, pneumatic or mechanical mode to realize the expansion and contraction, so that the temperature measuring instrument 1 is lifted and lowered through the expansion and contraction of the support body 5, and the shooting angle of the temperature measuring instrument 1 is adjusted through the expansion and contraction and rotation of the support rod 4.
The temperature measuring instrument 1 may preferably be a high temperature infrared thermal imager of the prior art, has a function of capturing an infrared image, and can transmit image information to the computer 2.
Step 3: the temperature measuring instrument 1 is started, so that the temperature measuring instrument 1 is driven to rotate by the adjustable bracket, and an image of the furnace wall 7 at the side part of the coal charging hole 8 is shot through the coal charging hole 8.
The range of the rotation angle of the temperature measuring instrument 1 during shooting is as follows: the camera of the temperature measuring instrument 1 rotates from an included angle of 10 degrees with the furnace top platform 6 to an included angle of 80 degrees with the furnace top platform 6, so that the temperature measuring instrument 1 can shoot an image of the furnace wall 7 from the upper part to the bottom through the coal charging hole 8, and the longitudinal height of the carbonization chamber is basically covered. The temperature measuring device 1 can acquire images of the furnace wall 7 by adopting a continuous shooting mode in the rotating process.
Step 4: the shooting of the temperature measuring instrument 1 is paused, the temperature measuring instrument 1 and the adjustable bracket are moved to the other side of the coal charging hole 8 and face the furnace wall 7 at one side of the coal charging hole 8 in the carbonization chamber, so that the setting positions of the temperature measuring instrument 1 at the two sides of the same coal charging hole 8 are symmetrical with respect to the coal charging hole 8 and respectively face the furnace walls 7 at the two sides in the carbonization chamber.
Step 5: and 3, repeating the step, and completing image shooting of the furnace walls 7 at the two sides of the coal charging hole 8. The shooting method of the images of the furnace walls 7 at the two sides of the coal charging hole 8 is the same, and will not be described here again.
Step 6: the photographing of the temperature measuring instrument 1 is suspended, and the temperature measuring instrument 1 and the adjustable bracket are moved to the next coal charging hole 8.
Step 7: and repeating the steps 1 to 6 until the temperature measuring instrument 1 shoots the images of the furnace walls 7 at the two sides of the coal charging hole 8. The shooting methods of the images of the furnace walls 7 at the two sides of the coal charging hole 8 are the same, and are not repeated here.
When the temperature measuring instrument 1 moves among all the coal charging holes 8, the movement sequence of the temperature measuring instrument 1 is that the coal charging holes 8 close to the coke oven side (the left side shown in fig. 3) are sequentially moved to the coal charging holes 8 close to the coke oven side (the right side shown in fig. 3).
The temperature measuring instrument 1 is arranged above the outer side of the coal charging hole 8, preferably, the vertical distance between the temperature measuring instrument 1 and the coal charging hole 8 is 1.1-1.3m, and the horizontal distance between the temperature measuring instrument 1 and the outer edge of the coal charging hole 8 is 10-20cm. The installation position of the temperature measuring instrument 1 ensures that an image of the furnace wall 7 beside the coal charging hole 8 can be shot through the coal charging hole 8, and meanwhile, the temperature measuring instrument 1 is positioned above the furnace top platform 6, namely in a normal temperature area, so that the reliable and safe operation of the temperature measuring instrument 1 can be ensured, and the accuracy of the temperature distribution data of the furnace wall of the carbonization chamber is ensured.
Step 8: the temperature measuring instrument 1 is connected to the computer 2, and the temperature distribution condition of the surface of the furnace wall of the carbonization chamber is obtained after the image is exported and the data of the computer 2 is processed, and can be used for guiding the gas regulation and control of the combustion chamber.
The sum of the image areas of the furnace walls 7 on both sides of all the coal charging holes 8 obtained by shooting by the temperature measuring instrument 1 is not lower than 50% of the total area of the furnace walls 7. Typically, four coal charging holes 8 are formed in the top of one carbonization chamber, and the area of the furnace wall 7 in an image obtained through the four coal charging holes 8 can reach more than 70% of the total area of the furnace wall 7, so that the total temperature distribution of the furnace wall of the whole carbonization chamber can be effectively reflected.
Example 1: the oven wall temperature test was performed on one of the carbonization chambers of JNX type 2-70-1 production ovens, see fig. 3, which has four coal charging holes 8 in total from the machine side (left side shown in fig. 3) to the coke side (right side shown in fig. 3), and are labeled 1#, 2#, 3# and 4#, in order.
First, the coal charging hole 8 at # 1 is opened, and the opened state is maintained for 1min. The temperature measuring instrument 1 is arranged on the measuring instrument platform 3, the bracket main body 5 of the tripod structure is arranged on the furnace top platform 6, the horizontal distance between the temperature measuring instrument 1 and the outer edge of the coal charging hole 8 is 10cm, and the height distance between the temperature measuring instrument 1 and the coal charging hole 8 is 1.3m through the telescopic adjustment of the bracket main body 5.
The shooting angle of the camera of the temperature measuring instrument 1 is adjusted by means of the expansion and the rotation of the supporting rod 4, the temperature measuring instrument 1 can adopt an FLIR SC330 high-temperature infrared thermal imager to automatically focus and shoot, the shooting angle continuously rotates from the included angle of the camera to the plane of the furnace top to 80 degrees, the faced furnace wall 7 is continuously shot in the rotating process, the image of the furnace wall 7 from the upper part to the bottom at one side of the coal charging hole 8 at the carbonization chamber 1# is obtained, and shooting is paused. Then the high temperature infrared thermal imager is moved to the opposite side of the coal charging hole 8 at the carbonization chamber 1# and an image of the furnace wall 7 on the other side of the coal charging hole 8 at the carbonization chamber 1# is obtained in accordance with the above steps. Thereby completing the acquisition of the infrared images of the surfaces of the furnace walls 7 at the two sides of the coal charging hole 8 at the carbonization chamber 1 #.
And opening the coal charging hole 8 at the position of the carbonization chamber 2# and keeping the opened state for 1min, and respectively collecting the infrared images of the surfaces of the furnace walls 7 at the two sides of the coal charging hole 8 at the position of the carbonization chamber 2# according to the steps.
And opening the coal charging hole 8 at the position of the carbonization chamber 3# and keeping the opened state for 1min, and respectively collecting the infrared images of the surfaces of the furnace walls 7 at the two sides of the coal charging hole 8 at the position of the carbonization chamber 3# according to the steps.
And opening the coal charging hole 8 at the position of the carbonization chamber 4# and keeping the opened state for 1min, and respectively collecting the infrared images of the surfaces of the furnace walls 7 at the two sides of the coal charging hole 8 at the position of the carbonization chamber 4# according to the steps.
The temperature measuring instrument 1 is connected to the computer 2, the collected surface infrared image is transmitted to the computer 2, the infrared image in image format such as an image picture or TIFF is converted into corresponding temperature data through the processing modes such as gray level extraction and the like by the infrared image temperature data software in the prior art, the temperature distribution data table of the surface of the furnace wall of the carbonization chamber is obtained, and the gas regulation and control of the combustion chamber can be guided through temperature distribution.
The temperature distribution data of the surface of the furnace wall of the carbonization chamber in this example are shown in tables 1 and 2:
TABLE 1 temperature data distribution table for one side surface of furnace wall of carbonization chamber
TABLE 2 temperature data distribution table for the other side surface of the furnace wall of the carbonization chamber
As can be seen from tables 1 and 2, the surface temperatures of the furnace walls 7 on both sides of the 1# coal charging hole 8 are generally lower than those of the other three coal charging holes 8, namely, the side temperature of the coke oven machine is lower; as can be seen from Table 2, the surface temperature of the furnace wall 7 on the other side of the 4# charging hole 8 is generally lower than the surface temperatures of the furnace walls 7 on the other sides of the middle 2# and 3# charging holes 8, i.e., the coke oven side edge temperature is lower. Therefore, it is necessary to increase the amount of both side heating gas.
Example 2: the oven wall temperature test was performed on one of the carbonization chambers of the JNX type 70-3 production oven, see fig. 3, which has four coal charging holes 8 in total from the machine side (left side shown in fig. 3) to the coke side (right side shown in fig. 3), and are labeled 1#, 2#, 3# and 4# in order.
First, the coal charging hole 8 at # 1 is opened, and the opened state is maintained for 2min. The temperature measuring instrument 1 is arranged on the measuring instrument platform 3, the bracket main body 5 of the tripod structure is arranged on the furnace top platform 6, the horizontal distance between the temperature measuring instrument 1 and the outer edge of the coal charging hole 8 is 20cm, and the height distance between the temperature measuring instrument 1 and the coal charging hole 8 is 1.1m through the telescopic adjustment of the bracket main body 5.
The shooting angle of the camera of the temperature measuring instrument 1 is adjusted by means of the expansion and the rotation of the supporting rod 4, the temperature measuring instrument 1 can adopt an FLIR SC330 high-temperature infrared thermal imager, the high-temperature infrared thermal imager carries out automatic focusing and shooting, the shooting angle continuously rotates from an included angle of 10 degrees between the camera and the plane of the furnace top to 80 degrees, the faced furnace wall 7 is continuously shot in the rotating process, and the image of the furnace wall 7 from the upper part to the bottom on one side of the coal charging hole 8 at the carbonization chamber 1# is obtained, and the shooting is stopped. Then the high temperature infrared thermal imager is moved to the opposite side of the coal charging hole 8 at the carbonization chamber 1# and the image of the furnace wall 7 at the other side of the coal charging hole 8 at the carbonization chamber 1# is obtained in accordance with the above steps. Thereby completing the acquisition of the infrared images of the surfaces of the furnace walls 7 at the two sides of the coal charging hole 8 at the carbonization chamber 1 #.
And opening the coal charging hole 8 at the position of the carbonization chamber 2# and keeping the opened state for 2min, and respectively collecting the infrared images of the surfaces of the furnace walls 7 at the two sides of the coal charging hole 8 at the position of the carbonization chamber 2# according to the steps.
And opening the coal charging hole 8 at the position of the carbonization chamber 3# and keeping the opened state for 2min, and respectively collecting the infrared images of the surfaces of the furnace walls 7 at the two sides of the coal charging hole 8 at the position of the carbonization chamber 3# according to the steps.
And opening the coal charging hole 8 at the position of the carbonization chamber 4# and keeping the opened state for 2min, and respectively collecting the infrared images of the surfaces of the furnace walls 7 at the two sides of the coal charging hole 8 at the position of the carbonization chamber 4# according to the steps.
The temperature measuring instrument 1 is connected to the computer 2, the collected surface infrared image is transmitted to the computer 2, the infrared image in image format such as an image picture or TIFF is converted into corresponding temperature data through the processing modes such as gray level extraction and the like by the infrared image temperature data software in the prior art, the surface temperature distribution data table of the furnace wall of the carbonization chamber is obtained, and the gas regulation and control of the combustion chamber can be guided through temperature distribution.
The surface temperature distribution data of the oven wall of the carbonization chamber in this example are shown in tables 3 and 4:
TABLE 3 surface temperature data distribution table on one side of furnace wall of carbonization chamber
Table 4 surface temperature data distribution table on the other side of the oven wall of the carbonization chamber
As can be seen from table 3, the temperature of the furnace wall 7 on one side of the 2# charging hole 8 is generally slightly higher than that of the other three charging holes 8, and therefore, the heating gas on the side of the 2# charging hole 8 needs to be appropriately reduced, and as can be seen from tables 3 and 4, the temperature of the furnace wall 7 on the side of the 1# charging hole 8, i.e., the machine side, and the side edge of the 4# charging hole 8, i.e., the coke side, is generally lower than that of the furnace wall 7 in the middle 2# and 3# charging holes 8, and the gas amount needs to be appropriately increased.
The above embodiments are merely preferred embodiments of the present invention and are not intended to limit the scope of the present invention, therefore, any modifications, equivalent substitutions, improvements, etc. made within the spirit and principle of the present invention should be included in the scope of the present invention.
Claims (8)
1. A method for measuring the temperature distribution of the surface of a furnace wall of a coke oven carbonization chamber is characterized by comprising the following steps: the method comprises the following steps:
Step 1: one of the coal charging holes (8) on the carbonization chamber is opened, and a plurality of coal charging holes are arranged at the top of the carbonization chamber;
after any one of the coal charging holes (8) is opened, before the temperature measuring instrument (1) is installed, the coal charging hole (8) is kept in an open state for a period of time;
Step 2: a temperature measuring instrument (1) is arranged on the furnace top platform (6) through an adjustable bracket, so that the temperature measuring instrument (1) is positioned on one side of the coal charging hole (8) and faces a furnace wall (7) on the other side of the coal charging hole (8) in the carbonization chamber;
Step 3: starting a temperature measuring instrument (1), enabling the temperature measuring instrument (1) to rotate under the drive of an adjustable bracket, and shooting an image of a furnace wall (7) at the side part of a coal charging hole (8) through the coal charging hole (8);
The range of the rotation angle of the temperature measuring instrument (1) during shooting is as follows: the camera of the temperature measuring instrument (1) rotates at an included angle of 10 degrees with the furnace top platform (6) until the camera of the temperature measuring instrument (1) rotates at an included angle of 80 degrees with the furnace top platform (6);
Step 4: suspending shooting of the temperature measuring instrument (1), and moving the temperature measuring instrument (1) and the adjustable bracket to the other side of the coal charging hole (8) and facing the furnace wall (7) at one side of the coal charging hole (8) in the carbonization chamber;
step 5: repeating the step 3 to complete the image shooting of the furnace walls (7) at the two sides of the coal charging hole (8);
Step 6: suspending shooting of the temperature measuring instrument (1), and moving the temperature measuring instrument (1) and the adjustable bracket to the next coal charging hole (8);
step 7: repeating the steps 1 to 6 until the temperature measuring instrument (1) shoots the images of the furnace walls (7) at the two sides of the coal charging hole (8);
Step 8: and connecting the temperature measuring instrument (1) to the computer (2) to obtain the temperature distribution condition of the surface of the furnace wall of the carbonization chamber, and guiding the gas regulation and control of the combustion chamber.
2. The method for measuring the temperature distribution of the surface of the oven wall of the carbonization chamber of the coke oven according to claim 1, characterized by comprising the steps of: the time period is 1-2min.
3. The method for measuring the temperature distribution of the surface of the oven wall of the carbonization chamber of the coke oven according to claim 1, characterized by comprising the steps of: the adjustable bracket comprises a supporting rod (4), a bracket main body (5) arranged on a furnace top platform (6) and a measuring instrument platform (3) arranged on the bracket main body (5); the support rod (4) and the support main body (5) are of telescopic structures, and two ends of the support rod (4) are rotatably connected between the measuring instrument platform (3) and the support main body (5), so that the temperature measuring instrument (1) arranged on the measuring instrument platform (3) can be lifted and rotated.
4. The method for measuring the temperature distribution of the surface of the oven wall of the carbonization chamber of the coke oven according to claim 1, characterized by comprising the steps of: when the temperature measuring instrument (1) moves among all the coal charging holes (8), the movement sequence of the temperature measuring instrument (1) sequentially moves from the coal charging hole (8) close to the coke oven side to the coal charging hole (8) close to the coke oven side.
5. The method for measuring the temperature distribution of the surface of the oven wall of the carbonization chamber of the coke oven according to claim 1, characterized by comprising the steps of: the arrangement positions of the temperature measuring instrument (1) on two sides of the same coal charging hole (8) are symmetrical with respect to the coal charging hole (8) and respectively face two side furnace walls (7) in the carbonization chamber.
6. The method for measuring the temperature distribution of the surface of the oven wall of the coking chamber according to claim 1 or 5, characterized by: the temperature measuring instrument (1) is arranged above the outer side of the coal charging hole (8).
7. The method for measuring the temperature distribution on the surface of the furnace wall of the carbonization chamber of the coke oven according to claim 6, characterized by comprising the steps of: the vertical distance between the temperature measuring instrument (1) and the coal charging hole (8) is 1.1-1.3m, and the horizontal distance between the temperature measuring instrument (1) and the outer edge of the coal charging hole (8) is 10-20cm.
8. The method for measuring the temperature distribution of the surface of the oven wall of the carbonization chamber of the coke oven according to claim 1, characterized by comprising the steps of: the sum of the image areas of the furnace walls (7) on the two sides of all the coal charging holes (8) obtained by shooting by the temperature measuring instrument (1) is not lower than 50% of the total area of the furnace walls (7).
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