Method for accurately calculating coke dry quenching burn-off rate online, and apparatus

Abstract

The present invention relates to the technical field of coking. Provided are a method for accurately calculating a coke dry quenching burn-off rate online, and an apparatus. Accurate online calculation formulae for a burn-off rate are as follows: carbon burn-off amount c(burn-off)=carbon content in CO and CO2 in exhaust gas-carbon content in CO2 in intake air-carbon content in CO from residual volatile matter in charged red coke; and coke dry quenching burn-off rate=carbon burn-off amount / total amount of coke charged into coke dry quenching furnace. In the formulae, the carbon burn-off amount C(burn-off) and the coke dry quenching burn-off rate are unknown data, and the remaining parameters for calculating the coke dry quenching burn-off rate are all known data obtained by means of performing direct or indirect calculation on data measured on line. The calculation method is rigorous, the data in the formulae is directly or indirectly obtained by means of on-line and real-time collection, and the obtained data is highly reliable and accurate.

Description

A method and device for accurately calculating the dry quenching coke loss rate online Technical Field

[0001] The present invention relates to the field of coking technology, and in particular to a method and device for accurately calculating the dry quenching coke loss rate online. Background Art

[0002] CDQ technology is widely used in the coking industry for its significant economic benefits. Residual volatiles from red coke enter the CDQ circulating gas. These volatiles are primarily combustible components, primarily H2 and CO. To prevent these combustible components from reaching their explosion limits and ensure safe operation of the CDQ system, air must be introduced to burn these volatiles. This also consumes some coke. While ensuring safety, minimizing coke consumption can lead to greater economic benefits.

[0003] Currently, most of the literature does not calculate the CDQ burn rate online. A few literatures have the function of online calculation of the CDQ burn rate, such as the literature published in "Metallurgical Energy": "Real-time Calculation of CDQ Burn Rate" and the literature published in "Science and Technology and Innovation": "Real-time Calculation and Monitoring System of CDQ Carbon Burn Rate". These calculation methods have low accuracy due to unreasonable calculation methods and parameter selection, lack of necessary measurement equipment, incomplete material balance, etc. In order to solve the above problems, a method for online and accurate calculation of the CDQ burn rate is needed, which can calculate the CDQ burn rate relatively accurately in real time, guide production operations, and obtain higher economic benefits.

[0004] Summary of the Invention

[0005] In order to solve the technical problems in the background technology, the present invention provides a method and device for accurately calculating the dry quenching coke loss rate online. The calculation method is rigorous, and the data in the formula are directly or indirectly obtained through online real-time collection. The obtained data is highly reliable and accurate.

[0006] In order to achieve the above object, the present invention adopts the following technical solutions:

[0007] A method for accurately calculating the dry quenching coke loss rate online, the method is based on the following principles:

[0008] 1) The carbon elements entering the CDQ system include: the carbon elements contained in the CO2 introduced into the air, the carbon elements in the red coke, and the carbon elements contained in the CO in the residual volatile matter of the red coke;

[0009] 2) Discharging carbon from the CDQ system includes discharging carbon from cold coke, carbon from coke powder in the primary dust collector, secondary dust collector, and ambient dust collector, and carbon from CO and CO2 in the exhaust gas;

[0010] 3) The carbon content entering the CDQ system is equal to the carbon content leaving the CDQ system;

[0011] Carbon loss = Carbon in red coke charged - Carbon in cold coke discharged - Carbon in coke powder at various locations;

[0012] Therefore, the online accurate calculation formula for the burnout rate is:

[0013] Carbon element burnout C (烧损) = Carbon content of CO and CO2 in the released gas - Carbon content of CO2 in the introduced air - Carbon content of CO in the residual volatile matter of the charged red coke;

[0014] CDQ coke loss rate = carbon element loss / total coke quantity loaded into CDQ furnace;

[0015] The formula for calculating the amount of carbon contained in the residual volatile matter of the red coke and the formula for calculating the amount of total coke loaded into the dry quenching furnace contain the unknown quantity C (烧损) In addition, all the parameters used in the above formula to calculate the CDQ loss rate are known data obtained directly or indirectly from online measurement data.

[0016] Furthermore, the carbon content of CO in the residual volatile matter of the charged red coke is obtained by the following method:

[0017] The residual volatile matter in the red coke is calculated based on the set ratio A of the residual volatile matter in the red coke and the set ratio B of CO in the residual volatile matter. The carbon element contained in CO in the residual volatile matter in the red coke is calculated according to the following formula: (残余挥发分) =(C (冷焦) +C (焦粉) +C (烧损) )×A×B×12÷22.4÷1000;

[0018] C (残余挥发分) is the mass flow rate of carbon contained in CO in the residual volatile matter of red coke, kg / h;

[0019] C (冷焦) is the amount of cold coke discharged, kg / h;

[0020] C (焦粉) The amount of coke powder discharged from the CDQ system, kg / h;

[0021] C (烧损) is the amount of carbon burned, kg / h.

[0022] Furthermore, the carbon content of CO and CO2 in the off-gas is obtained by the following method:

[0023] The exhaust gas flow rate is measured online by a flow meter, and the CO and CO2 contents in the exhaust gas are measured by a gas analyzer at the CDQ furnace inlet. The carbon element contained in the CO and CO2 in the exhaust gas is calculated by the following formula: (放散气) =Q (放散气) ×(CO%+CO2%)×12÷22.4;

[0024] C (放散气) is the mass flow rate of carbon elements contained in CO and CO2 in the released gas, kg / h;

[0025] Q (放散气) is the flow rate of the released gas, Nm 3 / h;

[0026] CO% (放散气) is the concentration of CO in the emitted gas;

[0027] CO2% (放散气) is the concentration of CO2 in the released gas;

[0028] 12 is the molar mass of carbon, g / mol;

[0029] 22.4 is the molar volume of the gas, L / mol.

[0030] Furthermore, the amount of carbon contained in the CO2 introduced into the air is obtained as follows:

[0031] The amount of air introduced is measured by the flow meter on the air introduction pipe. The CO2 content in the air is considered as a fixed value. The carbon element contained in the CO2 in the introduced air is calculated by the following formula: C (空导气) =Q (空导气) ×CO2% (空导气) ×12÷22.4;

[0032] C (空导气) is the mass flow rate of carbon element in the air introduced into the CDQ furnace, kg / h;

[0033] Q (空导气) is the flow rate of air introduced into the CDQ furnace, Nm 3 / h;

[0034] CO2% (空导气) is the CO2 concentration in the air introduced into the CDQ furnace.

[0035] Furthermore, the total coke quantity loaded into the CDQ furnace is obtained by combining online weighing, calculation and statistics:

[0036] Total coke yield = cold coke discharged from the CDQ furnace + coke powder in the primary dust collector, secondary dust collector, and ambient dust collector + carbon burnt loss;

[0037] The amount of cold coke discharged from the CDQ furnace is measured in real time by an electronic scale on a belt conveyor to obtain data;

[0038] The amount of coke fines in the primary dust collector, secondary dust collector, and ambient dust collector is measured during regular transportation. Since the amount of coke fines is directly proportional to the amount of coke discharged, the percentage of coke fines in the amount of coke discharged is obtained through statistical data, thereby obtaining real-time data on the amount of coke fines generated.

[0039] The amount of carbon burned is C (烧损) .

[0040] The present invention also provides a device for realizing the method of online accurate calculation of dry quenching coke loss rate, comprising a processor and a memory.

[0041] Wherein, the processor is configured to execute the method for online accurate calculation of dry quenching coke loss rate.

[0042] The memory is used to store executable instructions of the processor.

[0043] The present invention also provides a computer storable medium on which a computer program is stored. The computer program is executed by a processor to implement the method for online accurate calculation of the dry quenching coke loss rate.

[0044] Compared with the prior art, the present invention has the following beneficial effects:

[0045] 1) The present invention provides an online and accurate method for calculating the dry quenching coke burn rate. The carbon burn rate is calculated by subtracting the carbon content of CO2 in the introduced air from the carbon content of CO and CO2 in the released gas, and then subtracting the carbon content of CO in the residual volatile matter of the charged red coke. The calculation method is rigorous, and the selected calculation parameters are all directly or indirectly obtained through online real-time collection. The obtained data is highly reliable and accurate.

[0046] 2) The calculation of the carbon loss on combustion of the present invention fully considers the carbon contained in the CO in the residual volatile matter of the red coke and the carbon contained in the CO2 in the air through material balance, which makes the calculation method more scientific and significantly improves the accuracy of the results;

[0047] 3) In determining the total amount of coke to be loaded into the CDQ furnace, the amount of coke fines and the amount of burnt are fully considered. The ratio of coke fines to coke discharge is determined through online measurement and statistical methods, thereby obtaining real-time data on the amount of coke fines produced, rather than using empirical ratios. The calculated results are more consistent with actual operating conditions. BRIEF DESCRIPTION OF THE DRAWINGS

[0048] FIG1 is a carbon element balance diagram of a CDQ system used in a method for accurately calculating the CDQ burn rate online according to the present invention;

[0049] FIG2 is a diagram showing the carbon element related measurement positions of a CDQ system in a method for online accurate calculation of CDQ burn rate according to the present invention.

[0050] In Figure 1: 1. Carbon contained in CO2 from the incoming air 2. Carbon contained in the charged red coke 3. Carbon contained in CO in the residual volatile matter from the charged red coke 4. Carbon contained in the discharged cold coke 5. Carbon contained in coke powder from the primary dust collector 6. Carbon contained in coke powder from the secondary dust collector 7. Carbon contained in coke powder from the ambient dust collector 8. Carbon contained in CO and CO2 in the emitted gas;

[0051] In Figure 2: 9. Flow measurement on the air inlet pipe 10. Measurement of the exhaust gas flow rate when the exhaust gas is not desulfurized 11. Measurement of the exhaust gas flow rate when the exhaust gas is desulfurized 12. Gas containing coke entering the ambient dust removal 13. Electronic scale for belt conveyor 14. Online sampling of the circulating gas composition at the CDQ furnace inlet 15. Exhaust of coke from the primary dust collector 16. Exhaust of coke from the secondary dust collector. DETAILED DESCRIPTION

[0052] The specific embodiments of the present invention will be further described below with reference to the accompanying drawings:

[0053] Example 1

[0054] A method for accurately calculating the CDQ coke loss rate online is shown in FIG1 , which is a carbon element balance diagram of the present invention. Items 1 to 3 enter the CDQ furnace system, and items 4 to 8 exit the CDQ furnace.

[0055] 1) The carbon elements entering the CDQ system include: carbon element 1 contained in the CO2 introduced into the air, carbon element 2 contained in the red coke, and carbon element 3 contained in the CO contained in the residual volatile matter of the red coke;

[0056] 2) Exhaust of carbon from the CDQ system includes: carbon 4 from cold coke, carbon 5 from coke powder in the primary dust collector, carbon 6 from coke powder in the secondary dust collector, carbon 7 from coke powder in the ambient dust collector, and carbon 8 from CO and CO2 in the exhaust gas;

[0057] 3) According to the material balance principle, the carbon element entering the CDQ system is equal to the carbon element leaving the CDQ system; the following equation is obtained:

[0058] The carbon element 1 contained in the CO2 introduced into the air + the carbon element 2 in the red coke charged + the carbon element 3 contained in the CO in the residual volatile matter of the red coke charged = the carbon element 4 in the discharged cold coke + the carbon element 5 in the coke powder of the primary dust collector + the carbon element 6 in the coke powder of the secondary dust collector + the carbon element 7 in the coke powder of the ambient dust removal + the carbon element 8 contained in CO and CO2 in the released gas.

[0059] Shifting the above equation left and right yields:

[0060] =Carbon in the charged red coke = 2 - Carbon in the discharged cold coke = 4 - Carbon in the coke powder from the primary dust collector = 5 - Carbon in the coke powder from the secondary dust collector = 6 - Carbon in the coke powder from the ambient dust collector = 7 = Carbon contained in CO and CO2 in the emitted gas = 8 - Carbon contained in CO2 introduced into the air = 1 - Carbon contained in CO in the residual volatile matter from the charged red coke = 3. The left side of the equation represents the reduction in carbon during the entire CDQ process, i.e., the carbon loss during burnout:

[0061] Carbon loss = carbon element in red coke 2 - carbon element in cold coke 4 - carbon element in coke powder at various locations (including 5, 6, and 7).

[0062] Therefore, the following equation is obtained, that is, the online accurate calculation formula for the burn-out rate is:

[0063] Carbon element burnout C (烧损) =The carbon content of CO and CO2 in the released gas 8-the carbon content of CO2 in the introduced air 1-the carbon content of CO in the residual volatile matter of the charged red coke 3.

[0064] That is the following formula: C (烧损) =C (放散气) -C (空导气) -C (残余挥发分)

[0065] C (烧损) is the red coke loss, kg / h;

[0066] C (放散气) is the mass flow rate of carbon contained in CO and CO2 in the released gas, kg / h;

[0067] C (空导气) is the mass flow rate of carbon element in the air introduced into the CDQ furnace, kg / h;

[0068] C (残余挥发分) is the mass flow rate of carbon contained in CO in the residual volatile matter of red coke, kg / h;

[0069] CDQ coke loss rate = carbon element loss / total coke amount loaded into the CDQ furnace.

[0070] In the above formula, except for C (烧损) Except for the CDQ loss rate, which are unknown data, all other parameters used to calculate the CDQ loss rate are known data obtained by directly or indirectly calculating the data from online measurements.

[0071] 1. Obtaining the amount of carbon contained in CO in the residual volatile matter of red coke.

[0072] In this embodiment, the carbon content of CO in the residual volatile matter of the charged red coke is obtained by the following method:

[0073] The residual volatile content and CO concentration in the red coke can be divided into 8m 3 / t red coke, and CO accounts for 10% of the residual volatile matter, the carbon element contained in the CO in the residual volatile matter of the red coke is calculated according to the following formula: (残余挥发分) =(C (冷焦) +C (焦粉) +C (烧损) )×A×B×12÷22.4÷1000;

[0074] C (残余挥发分) is the mass flow rate of carbon contained in CO in the residual volatile matter of red coke, kg / h;

[0075] C (冷焦) is the amount of cold coke discharged, kg / h;

[0076] C (焦粉) The amount of coke powder discharged from the CDQ system, kg / h;

[0077] C (烧损) is the amount of carbon burned, kg / h.

[0078] In FIG2 , the belt conveyor electronic scale 13 is used to obtain C in real time. (冷焦) The amount of coke powder in the primary dust collector 15, the amount of coke powder in the secondary dust collector 16, and the amount of coke powder in the environmental dust removal 12 are obtained by weighing during regular external transportation. Since the amount of coke powder is directly proportional to the amount of coke discharged, the percentage of coke powder in the amount of coke discharged is obtained through statistical data, and then the real-time data of the amount of coke powder generated is obtained.

[0079] 2. The amount of carbon contained in CO and CO2 in the emitted gas is obtained.

[0080] In this embodiment, the carbon content of CO and CO2 in the off-gas is obtained by the following method:

[0081] The exhaust gas flow rate is measured online by a flow meter, and the CO and CO2 contents in the exhaust gas are measured by a gas analyzer at the CDQ furnace inlet. The carbon element contained in the CO and CO2 in the exhaust gas is calculated by the following formula: (放散气) =Q (放散气) ×(CO%+CO2%)×12÷22.4;

[0082] C (放散气) is the mass flow rate of carbon elements contained in CO and CO2 in the released gas, kg / h;

[0083] Q (放散气) is the flow rate of the released gas, Nm 3 / h;

[0084] CO%(放散气) is the concentration of CO in the emitted gas;

[0085] CO2% (放散气) is the concentration of CO2 in the released gas;

[0086] 12 is the molar mass of carbon, g / mol;

[0087] 22.4 is the molar volume of the gas, L / mol.

[0088] In FIG2 , the measurement of the vent gas flow rate 10 when the vent gas is not desulfurized or the measurement of the vent gas flow rate 11 when the vent gas is desulfurized can be measured in real time to obtain Q (放散气) The online sampling of circulating gas composition at the CDQ furnace inlet 14 can sample the circulating gas and obtain the CO% in real time through the gas composition analyzer installed nearby. (放散气) and CO2% (放散气) .

[0089] The flow rate of the vented air is measured by installing a flow meter on a straight pipe section, and the installation position of the flow meter ensures the measurement accuracy requirements, which significantly improves the accuracy of the carbon element burnout calculation results.

[0090] 3. Obtain the amount of carbon contained in the CO2 introduced into the air.

[0091] In this embodiment, the carbon content of CO2 in the introduced air is obtained by the following method:

[0092] The amount of air introduced is measured by the flow meter on the air introduction pipe. The CO2 content in the air is considered as a fixed value. The carbon element contained in the CO2 in the introduced air is calculated by the following formula: C (空导气) =Q (空导气) ×CO2% (空导气) ×12÷22.4;

[0093] C (空导气) is the mass flow rate of carbon element in the air introduced into the CDQ furnace, kg / h;

[0094] Q (空导气) is the flow rate of air introduced into the CDQ furnace, Nm 3 / h;

[0095] CO2% (空导气) is the CO2 concentration in the air introduced into the CDQ furnace.

[0096] In Figure 2, the flow measurement 9 on the air inlet pipe can measure Q in real time. (空导气) Data. CO2% (空导气) Consider it as 300ppm, which is 0.03%.

[0097] 4. Obtaining the total amount of coke loaded into the CDQ furnace.

[0098] In this embodiment, the total coke amount loaded into the CDQ furnace is obtained by combining online weighing, calculation, and statistics:

[0099] Total coke volume = cold coke volume discharged from the CDQ furnace + coke powder volume in the primary dust collector, secondary dust collector, and ambient dust collector + carbon element burnt loss.

[0100] The amount of cold coke discharged from the CDQ furnace is measured in real time by an electronic scale on a belt conveyor to obtain data;

[0101] The amount of coke dust in the primary dust collector, secondary dust collector, and environmental dust collector is obtained by weighing during regular external transportation; since the amount of coke dust is directly proportional to the amount of coke discharged, the percentage of coke dust in the amount of coke discharged is obtained through statistical data, and then the real-time data of the amount of coke dust generated is obtained.

[0102] The amount of carbon burned is C (烧损) .

[0103] In this embodiment, the total coke volume is the red coke volume, which can be calculated by the following formula: (红焦) =C (冷焦) +C (焦粉) +C (烧损)

[0104] C (红焦) is the red coke loaded into the CDQ furnace, kg / h;

[0105] C (冷焦) is the amount of cold coke discharged, kg / h;

[0106] C (焦粉) The amount of coke powder discharged from the CDQ system, kg / h;

[0107] C (烧损) is the amount of carbon burned, kg / h.

[0108] 5. Calculation of carbon loss. (烧损) =C (放散气) -C (空导气) -C (残余挥发分)

[0109] The calculation formula for the amount of carbon contained in the residual volatile matter of the red coke in the equation and the calculation formula for the amount of total coke loaded into the dry quenching furnace contain the unknown quantity C (烧损) , but only C in the equation (烧损) As the unknown number to be calculated, C can be obtained in real time (烧损) data.

[0110] 6. Calculation of burnout rate.

[0111] The coke loss rate can be calculated by the following formula:

[0112] C (烧损率) =C (烧损) ÷C (红焦) , C (红焦) This is the total focal length.

[0113] C (burning rate) is the coke burning rate in the CDQ furnace, %. (烧损) 、C (红焦) The data is already obtained in real time, so C can be accurately obtained online in real time. (烧损率) .

[0114] Example 2

[0115] This embodiment provides a device for implementing the method for online accurate calculation of CDQ loss rate, comprising a processor and a memory.

[0116] Wherein, the processor is configured to execute the method for online accurate calculation of dry quenching coke loss rate.

[0117] The memory is used to store executable instructions of the processor.

[0118] Example 3

[0119] The present invention also provides a computer storable medium on which a computer program is stored. The computer program is executed by a processor to implement the method for online accurate calculation of the dry quenching coke loss rate.

[0120] Those skilled in the art will appreciate that the embodiments of the present application can be provided as methods, systems, or computer program products. Therefore, the application can adopt the form of a complete hardware embodiment, a complete software embodiment, or an embodiment in combination with software and hardware. Moreover, the application can adopt the form of a computer program product implemented on one or more computer-usable storage media (including but not limited to disk storage, CD-ROM, optical storage, etc.) that contain computer-usable program code. The scheme in the embodiment of the present application can be implemented in various computer languages, for example, object-oriented programming language Java and literal translation scripting language JavaScript, etc.

[0121] The present application is described with reference to the flow chart and / or block diagram of the method, device (system), and computer program product according to the embodiment of the present application. It should be understood that each flow process and / or box in the flow chart and / or block diagram and the combination of the flow process and / or box in the flow chart and / or block diagram can be realized by computer program instructions. These computer program instructions can be provided to a processor of a general-purpose computer, a special-purpose computer, an embedded processing machine or other programmable data processing device to produce a machine, so that the instructions executed by the processor of the computer or other programmable data processing device produce a device for realizing the function specified in one flow chart flow or multiple flows and / or one box or multiple boxes of the block diagram.

[0122] These computer program instructions may also be stored in a computer-readable memory that can direct a computer or other programmable data processing device to operate in a specific manner, so that the instructions stored in the computer-readable memory produce a product including an instruction device that implements the functions specified in one or more processes in the flowchart and / or one or more boxes in the block diagram.

[0123] These computer program instructions can also be loaded onto a computer or other programmable data processing device so that a series of operating steps are executed on the computer or other programmable device to produce a computer-implemented process, so that the instructions executed on the computer or other programmable device provide steps for implementing the functions specified in one or more processes in the flowchart and / or one or more boxes in the block diagram.

[0124] Although the preferred embodiments of the present application have been described, those skilled in the art may make additional changes and modifications to these embodiments once they have learned the basic creative concept. Therefore, the appended claims are intended to be interpreted as including the preferred embodiments and all changes and modifications that fall within the scope of the present application.

[0125] Obviously, those skilled in the art may make various changes and modifications to this application without departing from the spirit and scope of this application. Thus, if these modifications and variations of this application fall within the scope of the claims of this application and their equivalents, this application is intended to include these modifications and variations.

Claims

1. A method for accurately calculating the dry quenching coke loss rate online, characterized in that: The method described is based on the following principles: 1) The carbon elements entering the CDQ system include: the carbon elements contained in the CO2 introduced into the air, the carbon elements in the red coke, and the carbon elements contained in the CO in the residual volatile matter of the red coke; 2) Exhausting carbon elements in the CDQ system includes: exhausting carbon elements in cold coke, carbon elements in coke powder from the primary dust collector, secondary dust collector, and environmental dust collector, and carbon elements contained in CO and CO2 in the exhaust gas; 3) The carbon element entering the CDQ system is equal to the carbon element leaving the CDQ system; Carbon loss = carbon in red coke charged - carbon in cold coke discharged - carbon in coke powder at various locations; The online accurate calculation formula for CDQ burnout rate is: Carbon element burnout C (烧损) = Carbon content of CO and CO2 in the released gas - Carbon content of CO2 in the introduced air - Carbon content of CO in the residual volatile matter of the charged red coke; CDQ coke loss rate = carbon element loss / total coke quantity loaded into CDQ furnace; In the above formula, except for the carbon burnout amount C (烧损) Except for the CDQ burnout rate which are unknown data, all other parameters used to calculate the CDQ burnout rate are known data directly or indirectly calculated from the online measured data.

2. The method for online accurate calculation of dry quenching coke loss rate according to claim 1, characterized in that: The carbon content of CO in the residual volatile matter of the charged red coke is obtained by the following method: The residual volatile content in the red coke is calculated according to the set ratio A of the residual volatile content in the red coke and the set ratio B of CO in the residual volatile content. The carbon element contained in CO in the residual volatile content in the red coke is calculated according to the following formula: C (残余挥发分) =(C (冷焦) +C (焦粉) +C (烧损) )×A×B×12÷22.4÷1000; C (残余挥发分) is the mass flow rate of carbon contained in CO in the residual volatile matter of red coke, kg / h; C (冷焦) is the amount of cold coke discharged, kg / h; C (焦粉) The amount of coke powder discharged from the CDQ system, kg / h; C (烧损) is the amount of carbon burned, kg / h.

3. The method for online accurate calculation of CDQ loss rate according to claim 1, characterized in that: The carbon content of CO and CO2 in the emitted gas is obtained by the following method: The exhaust gas flow is measured online by a flow meter, the CO and CO2 contents in the exhaust gas are measured by a gas analyzer at the CDQ furnace inlet, and the carbon element contained in CO and CO2 in the exhaust gas is calculated by the following formula: C (放散气) =Q (放散气) ×(CO%+CO2%)×12÷22.4; C (放散气) is the mass flow rate of carbon contained in CO and CO2 in the released gas, kg / h; Q (放散气) is the flow rate of the released gas, Nm 3 / h; CO% (放散气) is the concentration of CO in the emitted gas; CO2% (放散气) is the concentration of CO2 in the emitted gas; 12 is the molar mass of carbon, g / mol; 22.4 is the molar volume of the gas, L / mol.

4. The method for online accurate calculation of dry quenching coke loss rate according to claim 1, characterized in that: The amount of carbon contained in the CO2 introduced into the air is obtained as follows: The amount of air introduced is measured by the flow meter on the air introduction pipe. The CO2 content in the air is considered as a fixed value. The carbon element contained in the CO2 in the introduced air is calculated by the following formula: C (空导气) =Q (空导气) ×CO2% (空导气) ×12÷22.4; C (空导气) is the mass flow rate of carbon element in the air introduced into the CDQ furnace, kg / h; Q (空导气) is the flow rate of air introduced into the CDQ furnace, Nm 3 / h; CO2% (空导气) is the concentration of CO2 in the air introduced into the CDQ furnace.

5. The method for online accurate calculation of CDQ loss rate according to claim 1, characterized in that: The total coke quantity loaded into the CDQ furnace is obtained by combining online weighing, calculation and statistics: Total coke quantity = cold coke quantity discharged from the CDQ furnace + coke powder quantity in the primary dust collector, secondary dust collector and environmental dust collector + carbon element burnout quantity; The amount of cold coke discharged from the CDQ furnace is measured in real time by an electronic scale on a belt conveyor to obtain data; The amount of coke powder in the primary dust collector, secondary dust collector, and environmental dust collector is obtained by weighing during regular external transportation; since the amount of coke powder is directly proportional to the amount of coke discharged, the percentage of coke powder in the amount of coke discharged is obtained through statistical data, and then the real-time data of the amount of coke powder generated is obtained; The amount of carbon burned is C (烧损) .

6. A device for realizing the method for online accurate calculation of dry quenching coke loss rate as claimed in claim 1, characterized in that: including a processor and a memory; Wherein, the processor is configured to execute the method for accurately calculating the dry quenching coke loss rate online; The memory is used to store executable instructions of the processor.

7. A computer storable medium, characterized in that: A computer program is stored thereon, and the computer program is executed by a processor to implement a method for online accurate calculation of dry quenching coke loss rate as described in any one of claims 1 to 5.

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