A coke oven front temperature automatic measuring and automatic adjusting control system

Abstract

The application discloses a coke oven head temperature automatic measurement and automatic regulation control system and relates to the technical field of coke oven thermal regulation. The system further comprises a coke side threading pipe, a machine side threading pipe, a machine side automatic temperature measurement and waste gas analyzer combined device, a first fire hole, a second fire hole, a threading pipe, a first optical fiber, a second optical fiber, a bypass pipe, a furnace top and the coke side automatic temperature measurement and waste gas analyzer combined device. Two branch pipes of a coke oven gas main pipe are a coke oven gas machine side main pipe and a coke oven gas coke side main pipe. After implementation, the system is completely automatic, only needs to be monitored by an operation personnel in a central control room, replaces heavy and dangerous work of manual cooperation inspection, measurement and regulation, can accurately and automatically regulate the head temperature for 24 hours, avoids manual measurement and regulation errors, realizes single vertical flue automatic and accurate temperature regulation technology, and is suitable for head temperature regulation and all vertical flue temperature regulation.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of coke oven thermal regulation, in particular to a coke oven head temperature automatic measurement and automatic regulation control system. BACKGROUND

[0002] According to the current coke oven technical regulations, the coke oven head vertical flue temperature is required to be controlled in the range of 1100-1300℃, which needs to ensure the coke maturity in the carbonization chamber of the head and no coking phenomenon, and the standard requirement is not high,

[0003] There are many reasons, such as the poor tightness of the regenerator sealing wall, the inclined flue front and the small flue, the intake of air,

[0004] The oxygen content is too high, which affects the head temperature. In addition, the heat dissipation of the head temperature is large, especially when the locomotive is removed from the oven door, the coke is pushed out, at this time the heat dissipation of the head is very large, which is easy to cause the head temperature to drop very quickly, and it is difficult to ensure the stability of the head temperature in normal production, which affects the unevenness of the head temperature, thereby affecting the stability of the head coke quality.

[0005] At present, the measurement and regulation of the head temperature are usually realized by checking the fire by the fire adjuster and measuring the head vertical flue temperature twice a month, adjusting the flue turning plate opening degree, changing the flue suction and replacing the orifice plate size according to the inspection and measurement. This method of measuring and regulating the head temperature has defects, the abnormal head temperature can only be found by regular inspection and measurement, it is difficult to make adjustment in time, and it is easy to affect the maturity of the head coke. In addition, this regular inspection and measurement of the head temperature and adjustment of the head temperature need more fire adjusters to cooperate to complete, the labor intensity is large, the work efficiency is low, and the manual measurement inevitably has measurement error and adjustment error, which is difficult to adapt to the development trend of intelligent regulation and control of coke oven thermal.

[0006] The existing patent with publication number CN102520747A discloses a coke oven temperature and pressure automatic monitoring baking control system. The baking control system disclosed in the application case comprises a temperature data detection module, a pressure data detection module, a computer operation station and a pressure control adjustment execution mechanism, a real-time dynamic database is arranged in the computer operation station, the computer operation station is connected with the temperature data detection module, the pressure data detection module and the pressure control adjustment execution mechanism, the computer operation station executes the baking online guidance control strategy, can automatically control and adjust the coal gas pressure and flue suction, and gives an offline guidance adjustment scheme. The technical scheme of the application case can realize the automatic control of the coke oven temperature and pressure, thereby saving a large number of baking operators, reducing the labor intensity of the operators and improving the operation efficiency.

[0007] But the patent in the coke oven and pressure automatic monitoring, only single for the coke oven heating temperature control, monitoring part of the representative temperature, through the machine coke side main pipe pressure control and machine coke side of the branch flue flap suction control adjustment of the overall transverse wall, straight combustion chamber temperature, can not do accurate adjustment of the single combustion chamber temperature, so can not guarantee the accuracy of the single vertical fireway adjustment.

[0008] The existing patent publication number CN102517043A discloses a coke oven heating temperature control method. The temperature measuring point disclosed in the application is "arranged near the coal car / smoke car track, that is, the 8th fireway of each combustion chamber on the machine side and the 20th fireway of each combustion chamber on the coke side", which is called "machine and coke side representative fireway" in the process, that is, the machine and coke side straight temperature, which is one of the nine temperatures required to be controlled in the coke oven coking process.

[0009] The temperature control principle disclosed in the application is "first, detect the crude gas temperature of each carbonization chamber riser in the first and second coking periods, and automatically generate the coking index parameter K of each carbonization chamber and the average coking index parameter 1 of the whole oven according to the coking index parameter model, then correct the coking temperature according to the standard temperature model, and finally obtain the standard temperature of the coke oven, and deliver the standard temperature to the computer temperature control unit. From the third coking period, the average temperature value of each 8th fireway on the machine side and each 20th fireway on the coke side is adjusted according to the standard temperature given.

[0010] Secondly, install infrared optical fiber thermometer on the 8th fireway of each combustion chamber on the machine side and the 20th fireway of each combustion chamber on the coke side to automatically detect the vertical fireway temperature, and send the detected average vertical fireway temperature signal to the computer temperature control unit. The computer temperature control unit automatically detects the deviation of the input average vertical fireway temperature and the standard temperature and performs automatic multi-mode fuzzy operation to calculate the set value of the gas flow control unit. The gas flow control unit controls the gas flow regulating valve according to the deviation between the flow set value and the detected gas flow, and finally determines the flow of the heating gas.

[0011] However, the patent has some shortcomings in the coke oven temperature regulation technology:

[0012] 1. A coke oven has at least 1000 vertical fireways, and the patent only selects one vertical fireway on the machine side and the middle of the coke side to measure the temperature, with a total of about 100 measurements, which has a small coverage and poor representativeness, especially for the machine and coke side oven head fireway temperature, which is one of the main control items of the coke oven temperature, cannot be automatically detected and adjusted, which is a blind area.

[0013] 2. The temperature regulation of this patent only adjusts the average temperature value measured on the machine side and the coke side. The adjustment method is only to adjust the total amount of gas in the main gas pipe by reducing or increasing it. It cannot adjust each vertical flue that is too hot or too cold. The adjustment technology is relatively simple and crude.

[0014] 3. This patented temperature regulation method only measures and regulates the temperature of the vertical flue in the middle of the coke oven, which has a small coverage area and poor representativeness. It is easy to cause the temperature of the furnace head flue located at the coke oven machine and coke side to be too low or too high, resulting in the coke at the furnace head being undercooked and emitting a lot of smoke, or the coke at the furnace head being overcooked and collapsing, increasing the labor intensity of workers.

[0015] The difference between this patent and the previous patent lies in their adjustment targets. The previous patent mainly adjusted the total gas volume based on the representative flue temperature to simulate the overall furnace temperature, thus adjusting the overall furnace temperature. This patent, however, adjusts a single flue.

[0016] The control methods differ. The aforementioned patents only rely on the measured representative flue temperature, while this patent relies on the temperature of a single flue and the corresponding O2 and CO measurements in the exhaust gas. It considers not only the temperature but also whether the combustion is complete.

[0017] The control principles are different; the aforementioned patent only regulates the amount of gas, while this one regulates both the amount of air and the amount of gas.

[0018] The control effects are different. The current patent can not only regulate the temperature, but also prevent too little air from wasting too much gas due to incomplete combustion, and prevent too much air from taking away heat and increasing the heat consumption of coking.

[0019] Therefore, based on its many years of experience in design, development and actual production in the relevant industry, the applicant has studied and improved the existing structure and its shortcomings, and provided an automatic measurement and adjustment control system for coke oven head temperature, in order to achieve a more practical purpose. Summary of the Invention

[0020] (a) Technical problems to be solved

[0021] To address the shortcomings of existing technologies, this invention provides an automatic measurement and control system for coke oven head temperature. This system overcomes the bottlenecks of existing technologies, advancing from automatic regulation of the entire combustion chamber temperature to precise automatic regulation of individual vertical flues. It avoids the problems of relying on extensive manual measurement, inspection, and adjustment in high-temperature, confined, inefficient, labor-intensive, dangerous, and tedious work environments for crucial coke oven thermal regulation tasks.

[0022] The breakthrough is through the whole machine focus side main pipe pressure and the temperature limitation of the branch flue suction, for the high and low temperature number, especially the high and low temperature number of the coke oven furnace head temperature, the stability is poor, and the uniformity is difficult to adjust, the present application realizes the independent adjustment of the gas quantity and the air quantity of the single furnace head vertical fire channel, so that each furnace head temperature meets the control requirements, and realizes the accurate regulation and control of each furnace head temperature. Instead of the present manual inspection and adjustment, the labor intensity is large, the work efficiency is low, and the accuracy of manual operation is not high. Not only can the overall furnace head temperature be automatically controlled, but also each single furnace head fire channel temperature can be automatically and accurately adjusted and controlled in time.

[0023] (II) Technical scheme

[0024] In order to achieve the above object, the present application is realized by the following technical scheme: a coke oven furnace head temperature automatic measurement and automatic adjustment control system, comprising a coke oven gas main pipe, a machine side wire pipe, a machine side automatic measurement temperature and waste gas analyzer combination device, a first fire hole, a second fire hole, a wire pipe, a first optical fiber, a second optical fiber, a bypass pipe, a furnace top and a coke side automatic measurement temperature and waste gas analyzer combination device, the lead two branch pipes of the coke oven gas main pipe are coke oven gas machine side main pipe and coke oven gas coke side main pipe respectively;

[0025] The bypass pipe is arranged beside the coke oven gas machine side main pipe, and the component is a first valve hand opening gate valve, a filter screen is arranged behind the first valve;

[0026] A first electromagnetic valve is arranged on the rear section main pipe where the coke oven gas machine side main pipe and the bypass pipe converge, and the first electromagnetic valve mainly controls the gas flow pressure of the machine side coke oven gas main pipe;

[0027] A hand opening and closing valve second valve is arranged on the coke oven gas machine side main pipe, and a filter screen is arranged behind the second valve, if the filter screen is blocked, the second valve is closed, the filter screen is replaced and cleaned, and the bypass pipe valve is opened; if the filter screen is blocked, the valve is closed, the filter screen is replaced and cleaned, and the valve is opened, the filter screen and the filter screen are used in turn, so that the coke oven gas machine side main pipe can normally supply gas for heating;

[0028] A cross pipe is arranged on the coke oven gas main pipe;

[0029] The machine side wire pipe and the coke side wire pipe are distributed on the coke furnace top machine, the coke side furnace head fire hole and the first fire hole beside the coke side furnace head fire hole.

[0030] Preferably, the pipe diameter of the coke oven gas machine side main pipe and the coke oven gas coke side main pipe is DN2000mm, and the coke oven gas machine side main pipe and the coke oven gas main pipe mainly pass the coke oven gas, and provide the furnace head temperature supplement heating.

[0031] The first filter screen has a diameter of DN200mm, and is mainly used for filtering impurities in coke oven gas.

[0032] The first filter screen has a diameter of DN200mm, and is mainly used for filtering impurities in coke oven gas.

[0033] The first filter screen has a diameter of DN200mm, and is mainly used for filtering impurities in coke oven gas.

[0034] The first filter screen has a diameter of DN200mm, and is mainly used for filtering impurities in coke oven gas.

[0035] The first filter screen has a diameter of DN200mm, and is mainly used for filtering impurities in coke oven gas.

[0036] The first filter screen has a diameter of DN200mm, and is mainly used for filtering impurities in coke oven gas.

[0037] The first filter screen has a diameter of DN200mm, and is mainly used for filtering impurities in coke oven gas.

[0038] The first filter screen has a diameter of DN200mm, and is mainly used for filtering impurities in coke oven gas.

[0039] The first filter screen has a diameter of DN200mm, and is mainly used for filtering impurities in coke oven gas.

[0040] The waste gas analyzer device is used for automatically measuring the oxygen and carbon monoxide content in the rising combustion of the vertical flue. When the oxygen content detected by the online waste gas component detector is within the range of 3%±1% (CO content <1%), if the oxygen content exceeds 3%±1% (or the CO content exceeds 1%), the number is transmitted to the DCS system through the input template, and then the DCS system sends the number to the digital controller. The digital controller feeds back the setting instruction to the DCS system, and the DCS system transmits the feedback instruction to the corresponding waste gas flap small flue flap through the output template to adjust the oxygen content in the vertical flue to be within the range of 3%±1% (CO content <1%);

[0041] The waste gas flap small flue flap is provided with a small electro-hydraulic actuator, which is connected to the DCS system through the output template line. The DCS system sends the execution command to the small electro-hydraulic actuator of the waste gas flap small flue flap according to the digital controller, and completes the instruction. (O2 content is high, small electro-hydraulic actuator is closed, CO content is high, electro-hydraulic actuator is opened, and the O2 and CO content in the waste gas of the vertical flue is ensured to be within the specified range);

[0042] The infrared temperature measuring device is used for automatically measuring the temperature of the vertical flue in the furnace head. When the temperature of the vertical flue under the viewing hole on the machine side is set within the standard range of 1180℃±20℃, and the temperature of the vertical flue under the viewing hole on the coke side is set within the standard range of 1200℃±20℃, if the temperature of the vertical flue in the furnace head exceeds the standard range of 1180℃±20℃ (or 1200℃±20℃), the number is transmitted to the DCS system through the input template, and then the DCS system sends the number to the digital controller. The digital controller feeds back the setting instruction to the DCS system, and the DCS system transmits the feedback instruction to the corresponding small second electromagnetic valve through the output template to automatically adjust the gas flow, so that the temperature of the vertical flue in the furnace head is controlled within the standard range of 1180℃±20℃ and (1200℃±20℃);

[0043] The digital controller transmits the collected numbers in the input template to the digital controller through the DCS system according to the set parameters. After logical processing, the digital controller feeds back to the DSC system, and executes various commands through the output template at the same time. The digital controller processes various digital transmissions to the central control room, which is monitored by the central control room operator. If the vertical flue temperature in the furnace head has an abnormal value, the actuator does not execute the command, and the corresponding furnace head temperature number on the computer appears a yellow warning. The central control room operator notifies the on-site thermal worker and maintenance personnel to check and troubleshoot.

[0044] Preferably, the vertical flue refers to a single furnace head flue, and a combination device of a waste gas analyzer device and an infrared temperature measuring device is arranged in each single furnace head flue. The measuring probe is deeply inserted into the vertical flue through the viewing hole cover.

[0045] (Three) beneficial effects

[0046] The present application provides a coke oven head temperature automatic measurement and automatic adjustment control system. With the following

[0047] Beneficial effects:

[0048] Infrared automatic temperature measuring instrument and waste gas analyzer are installed at each oven head flue of the coke oven, the collected data are transmitted to the DCS system, and then the DCS system transmits the data to the digital controller for logical processing, and then the electromagnetic valve of the supplementary heating coke oven gas branch pipe of each oven head flue and the corresponding waste gas flap lower flue flap are executed to automatically adjust the temperature of the single oven head.

[0049] After implementation, it is completely automatic, only needs the monitoring of the operation personnel in the central control room, replaces the heavy and dangerous work of manual inspection, measurement and adjustment, can accurately and automatically adjust the oven head temperature for 24 hours, avoids the measurement and adjustment errors of manual measurement, and realizes the automatic, timely and accurate measurement and adjustment of the temperature of the single oven head flue.

[0050] (1) The infrared automatic temperature measuring and automatic waste gas analyzing combined device is used to automatically measure the temperature of each oven head flue and analyze the content of O2 and CO in the waste gas, so that the complete combustion of each oven head flue and the accuracy of the temperature measurement are ensured.

[0051] (2) The bypass pipe is arranged on the supplementary heating main pipe of the oven head, the gate valve and the filter screen are respectively arranged on the main pipe and the bypass pipe, when the filter screen needs to be cleaned, the switching use is realized, and the normal heating is flexibly ensured.

[0052] (3) Not only the electromagnetic valve is arranged on the supplementary heating main pipe to stably adjust the pressure of the supplementary heating main pipe, but also the electromagnetic valve is arranged in each small branch pipe of the supplementary heating main pipe to accurately adjust the flow (pressure) of the single oven head temperature.

[0053] (4) The small electro-hydraulic actuator is arranged on each waste gas flap flue flap, and the opening degree is automatically adjusted according to the waste gas analysis data.

[0054] The present application improves the stability and uniformity of the oven head temperature, stabilizes the coke quality, reduces the heat consumption of coking, eliminates the environmental protection accidents of uncooked coke and large smoke at the oven head, and solves the problems of large temperature fluctuation, low or high temperature, easy to cause coke to be born and large smoke at the oven head, or overcooked coke at the oven head to increase the labor intensity of workers caused by the traditional manual measurement and adjustment method of the oven head temperature. BRIEF DESCRIPTION OF DRAWINGS

[0055] The present specification includes the following drawings, and the shown contents are as follows:

[0056] Figure 1 It is the schematic diagram of principle flow of coke oven furnace end temperature automatic regulation system and control method;

[0057] Figure 2 It is the schematic diagram of structure flow of coke oven furnace end supplementary heating automatic regulation part;

[0058] Figure 3 It is the schematic diagram of structure of measuring furnace end temperature and waste gas analyzer device;

[0059] Figure 4 It is the schematic diagram of flow of measuring coke oven furnace end temperature device;

[0060] Marked as: 1, coke oven gas main pipe, 2, coke oven gas machine side main pipe, 3, first valve, 4, first filter screen, 5, second valve, 6, second filter screen, 7, first electromagnetic valve, 8, second electromagnetic valve, 9, machine side furnace end lower injection pipe, 10, cross pipe, 11, coke oven gas coke side main pipe, 12, digital controller, 13, DCS system, 14, input template, 15, waste gas analyzer device, 16, vertical flue, 17, infrared temperature measuring device, 18, air pipe, 19, output template, 20, waste gas flap small flue flap, 21, central control room, 22, coke side threading pipe, 23, machine side threading pipe, 24, machine side automatic temperature measuring and waste gas analyzer combined device, 25, first fire hole, 26, second fire hole, 27, threading pipe, 28, first optical fiber, 29, second optical fiber, 30, bypass pipe, 31, furnace top, 32, coke side automatic temperature measuring and waste gas analyzer combined device. DETAILED DESCRIPTION

[0061] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the present application.

[0062] Please refer to Figure 1 The present application provides a technical solution: a coke oven furnace end temperature automatic measuring and automatic regulation control system, comprising a coke oven gas main pipe 1, a coke side threading pipe 22, a machine side threading pipe 23, a machine side automatic temperature measuring and waste gas analyzer combined device 24, a first fire hole 25, a second fire hole 26, a threading pipe 27, a first optical fiber 28, a second optical fiber 29, a bypass pipe 30, a furnace top 31 and a coke side automatic temperature measuring and waste gas analyzer combined device 32, and the two branch pipes of the lead of the coke oven gas main pipe 1 are a coke oven gas machine side main pipe 2 and a coke oven gas coke side main pipe 11 respectively;

[0063] The bypass pipe 30 is arranged beside the coke oven gas machine side main pipe 2, the first valve 3 and the first filter screen 4 are arranged in the bypass pipe 30, the first valve 3 is a gate valve, and the first filter screen 4 is arranged behind the first valve 3.

[0064] The first electromagnetic valve 7 is arranged on the rear section main pipe where the coke oven gas machine side main pipe 2 and the bypass pipe 30 converge, and the first electromagnetic valve 7 mainly controls the gas flow pressure of the machine side coke oven gas main pipe 2.

[0065] The second valve 5 is arranged on the coke oven gas machine side main pipe 2, and the second filter screen 6 is arranged behind the second valve 5, if the second filter screen 6 is blocked, the second valve 5 is closed, the second filter screen 6 is replaced and cleaned, and the first valve 3 of the bypass pipe 30 is opened, if the first filter screen 4 is blocked, the first valve 3 is closed, the first filter screen 4 is replaced and cleaned, and the second valve 5 is opened, the first filter screen 4 and the second filter screen 6 are used alternately, and the normal gas supply of the coke oven gas machine side main pipe 2 is ensured.

[0066] The cross pipe 10 is arranged on the coke oven gas main pipe 1.

[0067] The machine side threading pipe 23 and the coke side threading pipe 22 are arranged beside the first fire hole 25 and the coke side fire hole 26 of the machine and the coke of the coke oven roof 31.

[0068] The pipe diameter of the coke oven gas machine side main pipe 2 and the coke oven gas coke side main pipe 11 is DN2000mm, and the coke oven gas machine side main pipe 2 and the coke oven gas main pipe 11 mainly pass the coke oven gas, and are arranged at the two ends of the machine side cross pipe of the coke oven basement and the coke side cross pipe to provide supplementary heating for the fire hole temperature.

[0069] The diameter of the first filter screen 4 is DN200mm, and the first filter screen 4 mainly filters the impurities in the coke oven gas.

[0070] The diameter of the filter screen for filtering the impurities in the coke oven gas is DN200mm.

[0071] The corresponding number of lower injection pipes 9 is arranged on the cross pipe 10 according to the number of the fire channels of the cross wall of the coke oven, a plurality of small branch pipes are arranged on the coke oven gas machine side main pipe 2, each small branch pipe is vertically connected with the machine side fire hole lower injection pipe 9 on the machine side cross pipe 10 of the coke oven basement, a check and cleaning opening is arranged on the side of the vertically connected pipe, and a small second electromagnetic valve 8 is arranged on each small branch pipe.

[0072] The diameter of the second electromagnetic valve 8 is DN20, and the second electromagnetic valve 8 controls the gas flow pressure of the combustion chamber temperature of a single fire hole.

[0073] The machine side automatic temperature measuring and exhaust gas analysis combined device 24 and the coke side automatic temperature measuring and exhaust gas analysis combined device 32 are both composed of the exhaust gas analyzer device 15 and the infrared temperature measuring device 17, and are installed on the vertical planes of the coke oven top machine side oven head fire hole 25 and the coke side oven head fire hole 26 respectively, and are inserted into the two corresponding probes in the vertical flue 16 through the fire hole cover circular hole to a certain size below the fire hole cover to measure the oven head temperature and the oxygen content and CO content in the exhaust gas when rising in the vertical flue respectively.

[0074] The wind pipe 18, the first optical fiber 28 and the second optical fiber 29 are arranged in the line hole 27, and are well sealed to mainly prevent fire and high temperature. The wind pipe 18 is connected with the exhaust gas analyzer device 15 and the infrared temperature measuring device 17 combination, and is mainly used to cool the measuring probe of the exhaust gas analyzer device 15 and the infrared temperature measuring device 17 combination.

[0075] The first optical fiber 28 and the second optical fiber 29 are connected with the probe of the exhaust gas analyzer device 15 and the probe of the infrared temperature measuring device 17 respectively, and are connected with the input template 14 on the other side, and then are connected with the DCS system 13 through the input template 14. The DCS system 13 transmits the numbers to the digital controller 12 according to the input template 14. The digital controller 12 feeds back the DCS system 13 after logical processing, and then transmits the numbers to the output template 19 to issue various commands. At the same time, the digital controller 12 transmits the numbers to the central control room 21 to make the operators in the central control room 21 play a monitoring role.

[0076] The bypass pipe 30 is arranged beside the coke oven gas coke side main pipe 11, the first valve 3 and the first filter screen 4 are arranged in the bypass pipe 30, the first valve 3 is a gate valve, and the first filter screen 4 is arranged behind the first valve 3. The first electromagnetic valve 7 is arranged on the rear section main pipe which is combined with the coke oven gas coke side main pipe 11 and the bypass pipe 30, and mainly controls the gas flow pressure of the coke oven gas coke side main pipe 11. The second valve 5 is arranged on the coke oven gas coke side main pipe 11, and the second filter screen 6 is arranged behind the second valve 5. If the second filter screen 6 is blocked, the second valve 5 is closed, the second filter screen 6 is replaced and cleaned, and the first valve 3 of the bypass pipe 30 is opened. If the first filter screen 4 is blocked, the first valve 3 is closed, the first filter screen 4 is replaced and cleaned, and the second valve 5 is opened. The first filter screen 4 and the second filter screen 6 are used alternately to ensure the normal gas supply of the coke oven gas machine side main pipe 2.

[0077] A plurality of small branch pipes are arranged on the coke oven gas coke side main pipe 11, each small branch pipe is vertically connected with the machine side oven head lower injection pipe 9 on the coke oven basement horizontal pipe 10, a check and cleaning opening is arranged on the side of the vertically connected pipe, and a small second electromagnetic valve 8 is arranged on each small branch pipe.

[0078] A coke oven furnace head temperature automatic regulating system and control method flow, the specific steps include: the first electromagnetic valve 7, the second electromagnetic valve 8, the central control room 21, digital controller 12, DCS system 13, input module 14, vertical flue 16, infrared temperature measuring device 17, output template 19 and waste gas flap small flue flap 20.

[0079] Waste gas analyzer device 15 is automatically measured and analyzed the oxygen and carbon monoxide content when the vertical flue 16 rises, when the waste gas analyzer device 15 detects the oxygen content 3% ± 1% or CO content <1% range, more than oxygen content 3% ± 1% or CO content 1% range, will be the number through the input template 14 to DCS system 13, then by DCS system 13 to digital controller 12, digital controller 12 according to the setting instruction feedback to DCS system 13, DCS system 13 according to the feedback instruction through the output template 19 to the corresponding small flue flap 20 for adjustment, so that the oxygen content in the vertical flue 3% ± 1%, CO content <1% range.

[0080] Waste gas flap small flue flap 20 is single set small electro-hydraulic actuator, through the output template 19 line connection DCS system 13, DCS system 13 according to the execution command sent by digital controller 12 to small flue flap 20 small electro-hydraulic actuator, complete instruction, O2 content high, small electro-hydraulic actuator close point, CO content high electro-hydraulic actuator open point, ensure that the O2, CO in the vertical flue combustion waste gas in the specified range;

[0081] Infrared temperature measuring device 17 is automatically measured furnace head inside vertical flue 16 temperature, when the online machine side looks at the fire hole 25 under the inner vertical flue 16 temperature setting in 1180 ℃ ± 20 ℃ standard range, the coke side looks at the fire hole 26 under the inner vertical flue 16 temperature setting in 1200 ℃ ± 20 ℃ standard range, if the machine, coke side furnace head vertical flue 16 temperature exceeds 1180 ℃ ± 20 ℃ or 1200 ℃ ± 20 ℃ standard range value, will be the number through the input template 14 to DCS system 13, then by DCS system 13 to digital controller 12, digital controller 12 according to the setting instruction feedback to DCS system 13, DCS system 13 according to the feedback instruction through the output template 19 to the corresponding small second electromagnetic valve 8 for automatic adjustment of gas flow, so that the machine, coke side furnace head vertical flue 16 temperature control in 1180 ℃ ± 20 ℃ and 1200 ℃ ± 20 ℃ standard range;

[0082] The digital controller 12 receives the digital signals collected by the input template 14 through the DCS system 13 according to the set parameters, and feeds back the logical processing results to the DCS system 13, and executes various commands through the output template 19. Meanwhile, the digital controller 12 processes various digital signals transmitted by the central control room 21, which is monitored by the operators of the central control room 21. If the temperature of the furnace head vertical fire channel 16 is abnormal, the actuator does not execute the command, and the corresponding furnace head temperature number on the computer appears a yellow warning. The operators of the central control room 21 notify the on-site thermal workers and maintenance personnel to check and eliminate the fault.

[0083] The vertical fire channel 16 refers to a single furnace head combustion chamber, and a combined device of a waste gas analyzer device 15 and an infrared temperature measuring device 17 is arranged in each single furnace head combustion chamber. The measuring probe is inserted into the vertical fire channel 16 of a certain size under the fire hole cover.

[0084] When working, the coke oven gas machine side main pipe 2 and the coke oven gas coke side main pipe 11 are two branch pipes of the lead wire of the coke oven gas main pipe 1, and the diameter is DN200mm. The bypass pipe 30 is arranged on the coke oven gas machine side main pipe 2, the gate valve 3 and the first filter screen 4 are installed on the bypass pipe 30, the diameter is DN200mm, the gate valve 5 with the same diameter and the second filter screen 6 with the diameter of DN200mm are installed on the main pipe at the junction of the bypass pipe 30 and the coke oven gas machine side main pipe 2, the first electromagnetic valve 7 is arranged on the main pipe after the junction of the coke oven gas machine side main pipe 2 and the bypass pipe 30, a plurality of small branch pipes are arranged vertically and communicated with the machine side furnace head lower injection pipe 9 after the electromagnetic valve on the machine side main pipe 2, and the cleaning holes are arranged on the side, the small second electromagnetic valve 8 is arranged on each small branch pipe to control the single furnace head gas flow (pressure).

[0085] The same facilities (bypass pipe, gate valve, filter screen, gate valve and filter screen on the main pipe, electromagnetic valve on the main pipe, small branch pipe, small electromagnetic valve on the small branch pipe) as those on the coke oven gas machine side main pipe 2 are arranged on the coke oven gas coke side main pipe 11. All the first electromagnetic valve 7 and the second electromagnetic valve 8 are connected to the DCS system 13 through the output template 19. Two small electro-hydraulic actuators (for gas and air) are arranged on the waste gas flap small flue flap of each corresponding furnace head number, and the lines of all the electro-hydraulic actuators are connected to the DCS system 13 through the output template 19.

[0086] The machine side automatic temperature measuring and waste gas analyzer combined device 24 and the coke side automatic temperature measuring and waste gas analyzer combined device 32 are arranged in each vertical fire channel of the machine side and coke side furnace heads on the furnace top 31. The vertical fire channel 16 is a representative of the machine side and coke side vertical fire channels of the furnace heads.

[0087] The probe of the combined device of the exhaust gas analyzer device 15 and the infrared temperature measuring device 17 penetrates into the vertical flue 16 through the specially designed fire hole cover round hole, the optical fiber 28 is connected with the exhaust gas analyzer device 15, the optical fiber 29 is connected with the infrared temperature measuring device 17, the optical fiber 28 and the optical fiber 29 are connected with the DCS system 13 through the input template, the DCS system 13 is connected with the digital controller 12, the digital controller 12 feeds back the DCS system 13 after logical processing according to the numbers transmitted by the DCS system 13 through the input template 14, and issues commands to each actuator through the output template 19. The compressed air pipe 18 is connected with the probe of the combined device of the exhaust gas analyzer device 15 and the infrared temperature measuring device 17, and the function of the cooling probe. All the optical fiber 28, the optical fiber 29 and the air pipe 18 are arranged through the threading pipe 27, and the corresponding sealing cover is covered on the threading pipe 27 to prevent rain, high temperature, dust and the like. The digital controller is connected with the central control room 21, the device is completely automatic, the personnel in the central control room 21 monitor, and manual operation is not needed.

[0088] In summary, the infrared automatic temperature measuring instrument and the exhaust gas analyzer are installed in each single combustion chamber of each coke oven head, the collected numbers are transmitted to the DCS system, the DCS system transmits the numbers to the digital controller for logical processing, then the electromagnetic valve of the small branch pipe of the coke oven gas for supplementary heating of each coke oven head and the corresponding exhaust gas flap small flue flap are commanded to execute, and the temperature of each coke oven head is automatically adjusted.

[0089] After implementation, the device is completely automatic, only the operation personnel in the central control room need to monitor, a large number of manual cooperation, inspection, measurement and adjustment are replaced, and heavy and dangerous work is avoided. The temperature of the coke oven head can be accurately and automatically adjusted for 24 hours, the measurement and adjustment error of manual work is avoided, and the technology that the temperature of each vertical flue of the coke oven head is independently, automatically and accurately adjusted is realized.

[0090] (1) The infrared automatic temperature measuring and automatic exhaust gas analyzing combined device is used, the temperature of the coke oven head is automatically measured, and the content of O2 and CO in the exhaust gas is analyzed, so that the complete combustion of the vertical flue and the accuracy of the temperature measurement are guaranteed.

[0091] (2) The bypass pipe is arranged on the supplementary heating main pipe of the coke oven head, the gate valve and the filter screen are respectively arranged on the main pipe and the bypass pipe, when the filter screen needs to be cleaned, the filter screen is switched for use, and the normal heating is flexibly ensured.

[0092] (3) Not only the electromagnetic valve is arranged on the supplementary heating main pipe, but also the electromagnetic valve is arranged in each small branch pipe of the supplementary heating main pipe, so that the flow (pressure) of the temperature of each coke oven head is accurately adjusted.

[0093] (4) The small electro-hydraulic actuator is arranged on the small flue flap of the exhaust gas flap, and the opening degree is automatically adjusted according to the exhaust gas analysis number.

[0094] It is to be understood that the terminology used herein such as first and second, and the like, is only used to distinguish one entity or action from another entity or action, and does not necessarily require or imply any such actual relationship or order between such entities or actions. Moreover, the terms "comprises", "comprising", or any other variations thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but can include other elements not expressly listed or inherent to such process, method, article, or apparatus.

[0095] While embodiments of the present application have been shown and described with reference to particular embodiments thereof, it will be understood by those skilled in the art that various changes in form and details can be made therein without departing from the spirit and scope of the application. The scope of the application is defined by the appended claims and their equivalents.

Claims

1. An automatic temperature measurement and control system for a coke oven head, comprising a coke oven gas main pipe (1) and a flue flap (20) for waste gas, characterized in that: The vertical flue (16) is equipped with an exhaust gas analyzer (15) and an infrared temperature measuring device (17). The exhaust gas analyzer (15) is configured to automatically measure and analyze the oxygen and carbon monoxide content when the vertical flue (16) is burning. The infrared temperature measuring device (17) is configured to automatically measure the temperature of the vertical flue (16). The exhaust gas valve flue flap (20) is configured to be adjustable. The automatic measurement and automatic adjustment control system for coke oven head temperature also includes an input template (14), a DCS system (13), a digital controller (12), and an output template (19). When the oxygen content detected by the exhaust gas analyzer device (15) is within the range of 3% ± 1% or CO content < 1%, if the oxygen content exceeds 3% ± 1% or the CO content exceeds 1%, the data will be transmitted to the DCS system (13) through the input template (14), and then sent by the DCS system (13) to the digital controller (12). The digital controller (12) feeds back to the DCS system (13) according to the setting instructions. The DCS system (13) transmits the feedback instructions to the corresponding exhaust gas valve flue flap (20) through the output template (19) for adjustment, so that the oxygen content in the vertical flue is within the range of 3% ± 1% and CO content < 1%.

2. The automatic measurement and automatic adjustment control system for coke oven head temperature according to claim 1, characterized in that: The temperature of the inner vertical flue (16) under the online machine side observation hole (25) is set within the standard range of 1180℃±20℃, and the temperature of the inner vertical flue (16) under the coke side observation hole (26) is set within the standard range of 1200℃±20℃. If the temperature of the vertical flue (16) of the machine and coke side furnace heads exceeds the standard range of 1180℃±20℃ or 1200℃±20℃, the data will be transmitted to the DCS system (13) through the input template (14), and then sent by the DCS system (13) to the digital controller (12). The digital controller (12) feeds back the setting instructions to the DCS system (13), and the DCS system (13) transmits the feedback instructions to the corresponding small second solenoid valve (8) through the output template (19) to automatically adjust the gas flow, so that the temperature of the vertical flue (16) of the machine and coke side furnace heads is controlled within the standard range of 1180℃±20℃ and 1200℃±20℃, respectively.

3. The automatic measurement and automatic adjustment control system for coke oven head temperature according to claim 1, characterized in that: The exhaust gas valve flue flap (20) is equipped with a small electro-hydraulic actuator, which is connected to the DCS system (13) through the output template (19). The DCS system (13) sends the execution command sent by the digital controller (12) to the small electro-hydraulic actuator of the exhaust gas valve flue flap (20) to complete the instruction.

4. The automatic measurement and automatic adjustment control system for coke oven head temperature according to any one of claims 1 to 3, characterized in that: The two branch pipes leading to the main coke oven gas pipe (1) are the main coke oven gas machine side pipe (2) and the main coke oven gas coke side pipe (11). A bypass pipe (30) is provided next to the coke oven gas generator side main pipe (2). A first solenoid valve (7) is provided on the main pipe at the junction of the coke oven gas generator side main pipe (2) and the bypass pipe (30). The first solenoid valve (7) controls the gas flow rate and pressure of the coke oven gas generator side main pipe (2). A second valve (5) is installed on the main pipe (2) on the coke oven gasifier side; A horizontal pipe (10) is installed on the main coke oven gas pipe (1).

5. The automatic measurement and automatic adjustment control system for coke oven head temperature according to claim 4, characterized in that: The diameter of the coke oven gas turbine side main pipe (2) and the coke oven gas coke side main pipe (11) is DN2000mm, and coke oven gas is used in both the coke oven gas turbine side main pipe (2) and the coke oven gas coke side main pipe (11).

6. The automatic measurement and automatic adjustment control system for coke oven head temperature according to claim 4, characterized in that: The bypass pipe (30) is provided with a first filter screen (4) with a diameter of DN200mm.

7. The automatic measurement and automatic adjustment control system for coke oven head temperature according to claim 4, characterized in that: A second filter screen (6) is installed in the main gasifier side pipe (2) of the coke oven.

8. The automatic measurement and automatic adjustment control system for coke oven head temperature according to claim 4, characterized in that: The horizontal pipe (10) is equipped with a corresponding number of lower spray pipes (9) according to the number of vertical fire channels in the horizontal wall of the coke oven; several small branch pipes are set on the main pipe (2) on the side of the coke oven gas generator, and each small branch pipe is vertically connected to the lower spray pipe (9) on the machine side of the horizontal pipe (10) in the coke oven basement. An inspection and cleaning port is set on the side of the vertical connecting pipe, and a small second solenoid valve (8) is installed on each small branch pipe. The small second solenoid valve (8) is set to control the gas flow and pressure of the vertical fire channel (16).

9. The automatic measurement and automatic adjustment control system for coke oven head temperature according to any one of claims 1 to 3, characterized in that: It also includes a machine-side automatic temperature measurement and exhaust gas analysis combination device (24) and a coke-side automatic temperature measurement and exhaust gas analysis combination device (32). The machine-side automatic temperature measurement and exhaust gas analysis combination device (24) and the coke-side automatic temperature measurement and exhaust gas analysis combination device (32) are respectively installed on the vertical surface of the machine-side furnace head observation hole (25) and the coke-side furnace head observation hole (26) on the top of the coke oven. They are inserted into two corresponding probes in the vertical flue (16) through the round hole of the observation hole cover, extending 200-300mm below the observation hole cover, to measure the furnace head temperature and the oxygen content and CO content in the exhaust gas when the vertical flue rises.

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