Measurement Method, Device and Storage Medium for Coke Dry Quenching Burnout Rate

Abstract

An embodiment of this specification discloses a method, device, and storage medium for measuring the burnout rate of coke dry quenching. The method includes: obtaining the coke production corresponding to coke dry quenching treatment, the red coke parameters loaded into the coke dry quenching furnace, and the cold coke parameters discharged from the coke dry quenching furnace; based on the coke production, red coke parameters, and cold coke parameters, determining the sensible heat of the red coke recovered in the coke dry quenching furnace, and determining the sensible heat of the coke volatile matter recovered and the combustion heat of the volatile matter; based on the coke production and the unit coke combustion heat, determining the coke combustion heat recovered in the coke dry quenching furnace; based on the sensible heat of the red coke, the sensible heat of the coke volatile matter and the combustion heat of the volatile matter, the coke combustion heat, and the heat transfer efficiency of the coke dry quenching furnace, determining the target heat input to the waste heat boiler; obtaining the steam heat generated by the waste heat boiler and the heat dissipation of the waste heat boiler; based on the target heat, the steam heat of the waste heat boiler, and the heat dissipation of the waste heat boiler, determining the coke burnout rate. The above solution improves the accuracy of the coke burnout rate.

Description

Technical Field

[0001] The embodiments of this specification relate to the technical field of coking, and in particular, to a method, device, and storage medium for measuring the burnout rate of coke dry quenching. Background Art

[0002] The coke dry quenching process is a method of quenching red coke by using low-temperature gas. During the coke dry quenching process, there is a phenomenon of coke burnout. Coke burnout will lead to an increase in the production cost of coke dry quenching, a decrease in the output and efficiency of coke dry quenching. Therefore, the measurement of coke burnout is a problem widely concerned in the industry. However, the existing measurement of coke burnout is inaccurate, resulting in difficulty in accurately controlling the burnout rate of coke dry quenching and high energy consumption during the coke dry quenching process. Summary of the Invention

[0003] The embodiments of this specification provide a method, device, and storage medium for measuring the burnout rate of coke dry quenching.

[0004] In a first aspect, the embodiments of this specification provide a method for measuring the burnout rate of coke dry quenching, including:

[0005] Obtaining the coke output corresponding to the coke dry quenching treatment, the red coke parameters loaded into the coke dry quenching furnace, and the cold coke parameters discharged from the coke dry quenching furnace;

[0006] Based on the coke output, the red coke parameters, and the cold coke parameters, determining the sensible heat of the red coke recovered in the coke dry quenching furnace, and determining the sensible heat of coke volatile matter and the combustion heat of volatile matter;

[0007] Based on the coke output, the heat of combustion per unit of coke, and the burnout rate of coke, determining the combustion heat of coke recovered in the coke dry quenching furnace;

[0008] Based on the sensible heat of the red coke, the sensible heat of coke volatile matter and the combustion heat of volatile matter, the combustion heat of coke, and the heat transfer efficiency of the coke dry quenching furnace, determining the target heat input to the waste heat boiler;

[0009] Obtaining the steam heat generated by the waste heat boiler and obtaining the heat dissipation of the waste heat boiler;

[0010] Based on the target heat, the steam heat of the waste heat boiler, and the heat dissipation of the waste heat boiler, determining the burnout rate of coke.

[0011] Optionally, the red coke parameters include the specific heat capacity of red coke and the charging temperature of red coke, and the cold coke parameters include the specific heat capacity of cold coke and the discharge temperature of cold coke; the sensible heat of the red coke recovered in the coke dry quenching furnace includes:

[0012] Based on a preset calculation formula for the sensible heat of red coke, determining the sensible heat of red coke;

[0013] Among them, the preset sensible heat calculation formula of the red coke is: Q1 = M × (C 红 × t 红 - C 冷 × t 冷 ), where Q1 is the sensible heat of the red coke, M is the coke production, C 红 is the specific heat capacity of the red coke, t 红 is the charging temperature of the red coke, C 冷 is the specific heat capacity of the cooled coke, t 冷 is the discharge temperature of the cooled coke.

[0014] Optionally, the red coke parameters include red coke volatile matter, specific heat capacity of red coke volatile matter, and charging temperature of red coke, and the cooled coke parameters include cooled coke volatile matter, specific heat capacity of cooled coke volatile matter, and discharge temperature of cooled coke; determining the sensible heat of the coke volatile matter recovered and the combustion heat of the volatile matter includes:

[0015] Based on the preset calculation formula of the sensible heat of coke volatile matter and the combustion heat of volatile matter, determining the sensible heat of the coke volatile matter and the combustion heat of volatile matter;

[0016] Among them, the preset calculation formula of the sensible heat of coke volatile matter and the combustion heat of volatile matter is:

[0017]

[0018] Q2 is the sensible heat of the coke volatile matter and the combustion heat of volatile matter, M is the coke production, V 红 is the specific heat capacity of the red coke volatile matter, t 红 is the charging temperature of the red coke, V 冷 is the specific heat capacity of the cooled coke volatile matter, t 冷 is the discharge temperature of the cooled coke, V 燃 is the combustion heat of the coke volatile matter, V d红 is the red coke volatile matter, V d红 is the cooled coke volatile matter, C H is the heat of combustion of hydrogen.

[0019] Optionally, determining the combustion heat of the coke recovered in the dry quenching furnace based on the coke production, the combustion heat per unit coke, and the coke burnout rate includes:

[0020] Based on the preset calculation formula of the coke combustion heat, determining the coke combustion heat;

[0021] Among them, the preset calculation formula of the coke combustion heat is: Q3 = M × C 焦燃 × X, where Q3 is the coke combustion heat, M is the coke production, C 焦燃 is the combustion heat per unit coke, and X is the coke burnout rate.

[0022] Optionally, obtaining the steam heat generated by the waste heat boiler includes:

[0023] Obtaining the superheated steam enthalpy, boiler water enthalpy, feed water enthalpy, blowdown rate, and steam output corresponding to the waste heat boiler;

[0024] Based on the superheated steam enthalpy, the boiler water enthalpy, the feed water enthalpy, the blowdown rate, the steam output, and a preset steam heat calculation formula, determining the steam heat;

[0025] Wherein, the preset steam heat calculation formula is:

[0026] Q5 = (C 过热蒸汽焓 - C 炉水焓 ) × Y + (C 炉水焓 - C 给水焓 ) × A × Y

[0027] Q5 is the steam heat, C 过热蒸汽焓 is the superheated steam enthalpy, C 炉水焓 is the boiler water enthalpy, C 给水焓 is the feed water enthalpy, A is the blowdown rate, and Y is the steam output.

[0028] Optionally, obtaining the heat dissipation of the waste heat boiler includes:

[0029] Obtaining the heat dissipation coefficient of the waste heat boiler;

[0030] Based on the heat dissipation coefficient of the waste heat boiler and the steam heat, determining the heat dissipation of the waste heat boiler.

[0031] Optionally, based on the sensible heat of the red coke, the sensible heat and combustion heat of the coke volatile matter, the combustion heat of the coke, and the heat transfer efficiency of the coke dry quenching furnace, determining the target heat input to the waste heat boiler includes:

[0032] Calculating the total heat of the sensible heat of the red coke, the combustion heat of the coke, and the sensible heat and combustion heat of the coke volatile matter;

[0033] Based on the total heat and the heat transfer efficiency of the coke dry quenching furnace system, determining the target heat.

[0034] In a second aspect, an embodiment of the present specification provides a measuring device for the burnout rate of coke dry quenching, including:

[0035] A first acquisition module, configured to acquire the coke output corresponding to the coke dry quenching process, the red coke parameters charged into the coke dry quenching furnace, and the cold coke parameters discharged from the coke dry quenching furnace;

[0036] The first processing module is used to determine the sensible heat of the red coke recovered in the coke dry quenching furnace, as well as the sensible heat of the coke volatile matter and the combustion heat of the volatile matter, based on the coke production, the red coke parameters, and the coke cooling parameters;

[0037] The second processing module is used to determine the combustion heat of the coke recovered in the coke dry quenching furnace, based on the coke production, the combustion heat per unit coke, and the coke burnout rate;

[0038] The heat transfer amount determination module is used to determine the target heat input to the waste heat boiler, based on the sensible heat of the red coke, the sensible heat of the coke volatile matter and the combustion heat of the volatile matter, the combustion heat of the coke, and the heat transfer efficiency of the coke dry quenching furnace;

[0039] The second acquisition module is used to acquire the steam heat generated by the waste heat boiler and the heat dissipation of the waste heat boiler;

[0040] The coke burnout rate determination module is used to determine the coke burnout rate, based on the target heat, the steam heat of the waste heat boiler, and the heat dissipation of the waste heat boiler.

[0041] In a third aspect, an embodiment of this specification provides a measurement device for the coke burnout rate in coke dry quenching, including a memory, a processor, and a computer program stored on the memory and executable on the processor. When the processor executes the program, the steps of the method described in any one of the above are implemented.

[0042] In a fourth aspect, an embodiment of this specification provides a computer-readable storage medium, on which a computer program is stored. When the program is executed by a processor, the steps of the method described in any one of the above are implemented.

[0043] The beneficial effects of the embodiments of this specification are as follows:

[0044] The embodiments of this specification provide a solution. During the process of measuring the burnout of coke in a coke dry quenching system, the coke production corresponding to the coke dry quenching process, the parameters of the red-hot coke charged into the coke dry quenching furnace, and the parameters of the cooled coke discharged from the coke dry quenching furnace are obtained. Based on the coke production, the parameters of the red-hot coke, and the parameters of the cooled coke, the sensible heat of the red-hot coke recovered in the coke dry quenching furnace, the sensible heat of the volatile components, and the combustion heat of the volatile components are determined. Based on the coke production, the heat of combustion per unit mass of coke, and the coke burnout rate, the combustion heat of the coke recovered in the coke dry quenching furnace is determined. Based on the sensible heat of the red-hot coke, the sensible heat and combustion heat of the volatile components of the coke, the combustion heat of the coke, and the heat transfer efficiency of the coke dry quenching furnace, the target heat input to the waste heat boiler is determined. The steam heat and heat dissipation generated by the waste heat boiler are obtained. Based on the target heat, the steam heat of the waste heat boiler, and the heat dissipation of the waste heat boiler, the coke burnout rate is determined. In this solution, the coke burnout rate is calculated through heat conservation. During the calculation process, since the influence of the red-hot coke and the cooled coke on heat is considered, the recovered heat obtained is more accurate, thereby improving the accuracy of the finally determined coke burnout rate. In addition, since all the data required to determine the coke burnout rate can be obtained from the report data commonly used in daily production and can be calculated at any time, it is convenient and simple. Therefore, the repeatability and reproducibility of the coke burnout rate calculation process are good. BRIEF DESCRIPTION OF THE DRAWINGS

[0045] By reading the following detailed description of the preferred embodiments, various other advantages and benefits will become clear to those of ordinary skill in the art. The drawings are only for the purpose of illustrating the preferred embodiments and are not considered to be a limitation of this specification. And throughout the drawings, the same reference numerals are used to represent the same components. In the drawings:

[0046] Figure 1 is a flowchart of a method for measuring the coke burnout rate provided by an embodiment of this specification;

[0047] Figure 2 is a schematic diagram of a device for measuring the coke burnout rate provided by an embodiment of this specification. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0048] In order to better understand the above technical solution, the technical solution of the embodiments of this specification will be described in detail below through the drawings and specific embodiments. It should be understood that the specific features in the embodiments of this specification and the embodiments are detailed descriptions of the technical solution of the embodiments of this specification, rather than limitations on the technical solution of this specification. Without conflict, the technical features in the embodiments of this specification and the embodiments can be combined with each other.

[0049] As Figure 1 shown, is a flowchart of a method for measuring the coke burnout rate provided by an embodiment of this specification. The method includes the following steps:

[0050] Step S101: Obtain the coke production corresponding to the coke dry quenching process, the red coke parameters loaded into the coke dry quenching furnace, and the cold coke parameters discharged from the coke dry quenching furnace;

[0051] Step S102: Based on the coke production, the red coke parameters, and the cold coke parameters, determine the sensible heat of the red coke recovered in the coke dry quenching furnace, and determine the sensible heat of the coke volatile matter and the combustion heat of the volatile matter;

[0052] Step S103: Based on the coke production, the combustion heat per unit coke, and the coke burnout rate, determine the combustion heat of the coke recovered in the coke dry quenching furnace;

[0053] Step S104: Based on the sensible heat of the red coke, the sensible heat of the coke volatile matter and the combustion heat of the volatile matter, the combustion heat of the coke, and the heat transfer efficiency of the coke dry quenching furnace, determine the target heat input to the waste heat boiler;

[0054] Step S105: Obtain the steam heat generated by the waste heat boiler and the heat dissipation of the waste heat boiler;

[0055] Step S106: Based on the target heat, the steam heat of the waste heat boiler, and the heat dissipation of the waste heat boiler, determine the coke burnout rate.

[0056] The method for measuring the coke burnout rate provided in the embodiments of this specification can be applied to a coke dry quenching system, which includes but is not limited to a coke dry quenching furnace, a waste heat boiler, a controller, and sensors. The specific process of the coke dry quenching process can be as follows: Red coke is loaded into the coke dry quenching furnace from the top of the furnace. In the coke dry quenching furnace, the coke exchanges heat with low-temperature gas, and after the coke is cooled, it is discharged through the coke discharging device. At the same time, the gas cooling the coke gradually heats up during the heat exchange process. The heated gas enters the waste heat boiler and exchanges heat with the feed water in the waste heat boiler. The gas whose temperature drops again after heat exchange can enter the coke dry quenching furnace for recycling. Among them, the sensors can include temperature sensors, weight sensors, etc., which are used to measure various parameters during the coke dry quenching process. The controller is used to process the data of various parameters collected during the coke dry quenching process and control each device in the coke dry quenching process.

[0057] In step S101, the coke production corresponding to the coke dry quenching process is the production of red coke loaded into the coke dry quenching furnace. The red coke parameters loaded into the coke dry quenching furnace can include but are not limited to the specific heat capacity of red coke, the charging temperature of red coke, the volatile matter of red coke, and the specific heat capacity of red coke volatile matter. The cold coke parameters discharged from the coke dry quenching furnace can include but are not limited to the specific heat capacity of cold coke, the discharging temperature of cold coke, the volatile matter of cold coke, and the specific heat capacity of cold coke volatile matter.

[0058] It should be noted that some red coke parameters and coke cooling parameters can be obtained according to the sensors on the on-site equipment. For example, the red coke charging temperature and the coke cooling discharge temperature can be obtained through temperature sensors. Some red coke parameters and coke cooling parameters can also be obtained by querying a preset parameter table. Taking the specific heat capacity of red coke as an example, the corresponding relationship table between the preset coke temperature and the specific heat capacity can be used to determine the specific heat capacity of red coke corresponding to the red coke temperature. In order to make the final coke burn-off rate more accurate, in the embodiments of this specification, the specific heat capacity of red coke and the specific heat capacity of coke cooling both adopt the total value of the specific heat capacity of carbon and ash.

[0059] In the embodiments of this specification, the heat conservation is used to calculate the coke burn-off rate. The heat conservation corresponds to the heat balance calculation and analysis of two parts, namely the heat balance analysis of the coke dry quenching furnace and the heat balance analysis of the waste heat boiler. Among them, in the heat balance analysis of the coke dry quenching furnace, it is necessary to calculate the recovered heat, and the recovered heat may include the sensible heat of red coke, the sensible heat of coke volatiles and the combustion heat of volatiles, as well as the combustion heat of coke.

[0060] Among them, the sensible heat of red coke, the sensible heat of coke volatiles and the combustion heat of volatiles can be obtained through step S102. The combustion heat of coke can be obtained through step S103.

[0061] In the specific implementation process, based on the coke production, red coke parameters and coke cooling parameters, there are various ways to determine the sensible heat of red coke. In the embodiments of this specification, one of the implementation methods is taken as an example for illustration. In this embodiment, the red coke parameters used to calculate the sensible heat of red coke include the specific heat capacity of red coke and the red coke charging temperature, and the coke cooling parameters include the specific heat capacity of coke cooling and the coke cooling discharge temperature. The steps to determine the sensible heat of red coke recovered in the coke dry quenching furnace can be:

[0062] Based on the preset calculation formula for the sensible heat of red coke, determine the sensible heat of red coke; among them, the preset calculation formula for the sensible heat of red coke is: Q1 = M × (C 红 × t 红 - C 冷 × t 冷 ), Q1 is the sensible heat of red coke, M is the coke production, C 红 is the specific heat capacity of red coke, t 红 is the red coke charging temperature, C 冷 is the specific heat capacity of coke cooling, t 冷 is the coke cooling discharge temperature. It should be noted that the specific heat capacity of red coke and the specific heat capacity of coke cooling can both be obtained by summing the specific heat capacity of carbon and ash.

[0063] In the embodiments of this specification, when calculating the sensible heat of red coke, the sensible heat of coke cooling is considered at the same time. Therefore, the obtained sensible heat of red coke is closer to the actual production, and the calculation accuracy of the recovered heat is improved.

[0064] In the embodiments of this specification, when calculating the recovered heat, the sensible heat of the coke volatile matter and the combustion heat of the volatile matter during the coke dry quenching process are also considered. Calculating the sensible heat of the coke volatile matter and the combustion heat of the volatile matter based on the coke production, red coke parameters, and cold coke parameters can also be achieved in various ways. Below, one implementation manner will be taken as an example for illustration. In this embodiment, the red coke parameters for calculating the sensible heat of the coke volatile matter and the combustion heat of the volatile matter include the red coke volatile matter, the specific heat capacity of the red coke volatile matter, and the red coke charging temperature. The cold coke parameters include the red coke volatile matter, the specific heat capacity of the red coke volatile matter, and the red coke charging temperature. The steps for determining the sensible heat of the coke volatile matter and the combustion heat of the volatile matter can be as follows:

[0065] Based on a preset calculation formula for the sensible heat of the coke volatile matter and the combustion heat of the volatile matter, determine the sensible heat of the coke volatile matter and the combustion heat of the volatile matter;

[0066] Among them, the preset calculation formula for the sensible heat of the coke volatile matter and the combustion heat of the volatile matter is:

[0067]

[0068] Q2 is the sensible heat of the coke volatile matter and the combustion heat of the volatile matter, M is the coke production, V 红 is the specific heat capacity of the red coke volatile matter, t 红 is the red coke charging temperature, V 冷 is the specific heat capacity of the cold coke volatile matter, t 冷 is the cold coke discharge temperature, V 燃 is the combustion heat of the coke volatile matter, V d红 is the red coke volatile matter, V d红 is the cold coke volatile matter, C H is the heat of combustion of hydrogen. It should be noted that the specific heat capacity of the red coke volatile matter, the specific heat capacity of the cold coke volatile matter, the cold coke volatile matter, the cold coke volatile matter, and the heat of combustion of hydrogen can all be obtained by looking up tables or performing interpolation calculations on the parameters in the tables.

[0069] In the embodiments of this specification, considering that the specific heat capacity of the coke volatile matter is different at different temperatures and the combustion heat of the coke volatile matter is recovered, the recovered heat is more comprehensive.

[0070] In step S103, based on the coke production, the calorific value of unit coke combustion, and the coke burnout rate, determine the coke combustion heat recovered in the coke dry quenching furnace. Among them, the calorific value of unit coke combustion can be obtained by querying a preset parameter table, and the coke burnout rate is a parameter that needs to be deduced and calculated.

[0071] In the specific implementation process, step S103 can be achieved through the following steps: Based on a preset calculation formula for the coke combustion heat, determine the coke combustion heat; among them, the preset calculation formula for the coke combustion heat is: Q3 = M × C 焦燃×X, Q3 is the heat of coke combustion, M is the coke production, C 焦燃 is the heat of unit coke combustion, and X is the coke burnout rate.

[0072] Further, after obtaining the recovered heat of various types, the target heat input to the waste heat boiler is determined through step S104. Among them, the heat transfer efficiency of the coke dry quenching furnace may vary depending on the type of coke dry quenching furnace, and the heat transfer efficiency of the coke dry quenching furnace may be the heat transfer efficiency measured during daily production.

[0073] In the embodiments of this specification, the method for determining the target heat may be: calculating the total heat of the sensible heat of the red coke, the heat of coke combustion, the sensible heat of coke volatile matter, and the heat of volatile matter combustion; determining the target heat based on the total heat and the heat transfer efficiency of the coke dry quenching furnace system.

[0074] Specifically, the target heat can be determined by the following formula:

[0075] Q4 = (Q1 + Q2 + Q3) × η

[0076] where Q4 is the target heat and η is the heat transfer efficiency of the coke dry quenching furnace.

[0077] Further, after completing the heat balance analysis of the coke dry quenching furnace, the heat balance of the waste heat boiler can be analyzed. The heat balance analysis of the waste heat boiler includes the following aspects: the steam heat of the waste heat boiler and the heat dissipation of the waste heat boiler.

[0078] In the embodiments of this specification, the steam heat of the waste heat boiler and the heat dissipation of the waste heat boiler are determined through step S105. The steam heat of the waste heat boiler can be obtained in various ways. Below, one method for calculating the steam heat is described. In this embodiment, the steam heat of the waste heat boiler can be obtained through the following steps:

[0079] Obtain the superheated steam enthalpy, boiler water enthalpy, feed water enthalpy, blowdown rate, and steam output corresponding to the waste heat boiler; determine the steam heat based on the superheated steam enthalpy, the boiler water enthalpy, the feed water enthalpy, the blowdown rate, the steam output, and a preset steam heat calculation formula; where the preset steam heat calculation formula is:

[0080] Q5 = (C 过热蒸汽焓 - C 炉水焓 ) × Y + (C 炉水焓 - C 给水焓 ) × A × Y

[0081] Q5 is the steam heat, C 过热蒸汽焓 is the superheated steam enthalpy, C 炉水焓 is the boiler water enthalpy, C 给水焓is the feed water enthalpy, A is the blowdown rate, and Y is the steam output.

[0082] It should be noted that the enthalpy of superheated steam can be the enthalpy of superheated steam at 450°C and 545°C, the enthalpy of boiler water can be the enthalpy of boiler water at 256°C, and the enthalpy of feed water can be the enthalpy of feed water at 105°C. Of course, the temperatures of superheated steam, boiler water, and feed water can be set according to actual needs and are not limited here. The enthalpy of superheated steam, the enthalpy of boiler water, and the enthalpy of feed water can be obtained by querying the corresponding preset parameter table, the steam output can be collected through a meter, and the blowdown rate can be obtained through statistical calculations during the daily production process.

[0083] The heat dissipation of the waste heat boiler can be calculated through the following steps: obtain the heat dissipation coefficient of the waste heat boiler; based on the heat dissipation coefficient of the waste heat boiler and the steam heat, determine the heat dissipation of the waste heat boiler.

[0084] Specifically, the calculation formula for the heat dissipation of the waste heat boiler is:

[0085] Q6 = Q5 × q e

[0086] where Q6 is the heat dissipation of the waste heat boiler, and q e is the heat dissipation coefficient of the waste heat boiler.

[0087] Through the above description, based on the heat balance analysis results of the coke dry quenching furnace and the heat balance analysis results of the waste heat boiler, the coke burn-off rate is calculated through step S106.

[0088] Specifically, the target heat input to the waste heat boiler is equal to the steam heat and the heat dissipation of the waste heat boiler, that is, Q4 = Q5 + Q6. Substituting the corresponding parameter values into this formula, the coke burn-off rate X can be calculated.

[0089] To better understand the measurement method of the coke burn-off rate in the embodiments of this specification, the following takes two different specifications of coke ovens as examples to illustrate the calculation process of the coke burn-off rate.

[0090] The first specification: The coke oven specification is a 6-meter coke oven, and the production data of a certain month is used to measure the coke burn-off rate of that month.

[0091] 1. Conduct a heat balance calculation and analysis of the coke dry quenching furnace, which specifically includes the following aspects:

[0092] (1) Calculate the sensible heat of the red coke

[0093] The production report data of the 6-meter coke oven for that month showed that the coke output was 2,912.71 t / d; the charging temperature of the red-hot coke was 1,050 °C; the discharging temperature of the cooled coke was 160 °C; the specific heat capacity of the red-hot coke was 1.467 kJ / (kg·°C); the specific heat capacity of the cooled coke was 0.89 kJ / (kg·°C). The calculation is as follows according to the formula:

[0094] Q1 = M × (C 红 × t 红 - C 冷 × t 冷 ) = 4,071,822,945 kJ

[0095] (2) Calculate the sensible heat of the coke volatile matter and the combustion heat of the volatile matter

[0096] The production report data of the 6-meter coke oven for that month showed that the volatile matter of the red-hot coke was 0.95%; the volatile matter of the cooled coke was 0.93%; the specific heat capacity of the red-hot coke volatile matter was 1.802 kJ / (kg·°C); the specific heat capacity of the cooled coke volatile matter was 1.46 kJ / (kg·°C); the combustion heat of hydrogen was 143,000 kJ / Kg. The calculation is as follows according to the formula:

[0097] Q2 = M × (V 红 × t 红 - V 冷 × t 冷 ) + V 燃 = 833,138,20 kJ

[0098] (3) Combustion heat of coke

[0099] The combustion heat per unit of coke is 33,850 kJ / Kg. The calculation is as follows according to the formula:

[0100] Q3 = M × C 焦燃 × X = 98,595,233,500X kJ

[0101] 2. Calculate and analyze the heat brought by the circulating gas from the coke dry quenching furnace into the boiler

[0102] Through heat accounting, it can be known that the heat transfer efficiency of the quenching furnace system is 0.83%. The calculation is as follows according to the formula:

[0103] Q4 = (Q1 + Q2 + Q3) × η = 3,448,763,514 kJ + 81,834,043,805X kJ

[0104] 3. Conduct a heat balance analysis of the waste heat boiler, specifically including the following aspects:

[0105] (1) Steam heat generated by the waste heat boiler

[0106] The enthalpy value of the 6-meter coke oven's 450°C medium-pressure superheated steam is 3323 kJ / Kg; the enthalpy value of the boiler water at 256°C is 1135 kJ / Kg; the enthalpy value of the feed water at 105°C is 436 kJ / Kg, and the boiler blowdown rate is 2%. The calculation is as follows according to the formula:

[0107] Q5 = (C 过热蒸汽焓 - C 炉水焓 ) × Y + (C 炉水焓 - C 给水焓 ) × A × Y = 2900980Y kJ

[0108] (2) Heat dissipation of the waste heat boiler

[0109] The heat dissipation coefficient of the waste heat boiler is 1.2%. The calculation is as follows according to the formula:

[0110] Q6 = Q5 × q e = 34811.76Y kJ

[0111] The production report data of the 6-meter coke oven for that month shows a steam output of 1608 t / d. According to the law of conservation of heat, based on Q4 = Q5 + Q6, the coke burnout rate for the corresponding period is calculated to be 1.55%.

[0112] It should be noted that after obtaining the coke burnout rate, it can be further compared with the set coke burnout rate threshold, which can be set according to actual production. In the embodiments of this specification, the coke burnout rate threshold is 0.9%. Since the calculated coke burnout rate is higher than the coke burnout rate threshold, relevant control parameters need to be adjusted to reduce the coke burnout loss.

[0113] The second specification: The coke oven specification is a 7.63-meter coke oven, and the dry coke burnout rate for a certain month is measured using the production data of that month.

[0114] 1. Conduct a heat balance calculation and analysis of the dry coke oven, specifically including the following aspects:

[0115] (1) Calculate the sensible heat of the red coke

[0116] The production report data of the 7.63-meter coke oven for that month shows a coke output of 5318.19 t / d; the charging temperature of the red coke is 1050°C; the discharged temperature of the cold coke is 160°C; the specific heat capacity of the red coke is 1.467 kJ / (kg·°C); the specific heat capacity of the cold coke is 0.89 kJ / (kg·°C). The calculation is as follows according to the formula:

[0117] Q1 = M × (C 红 × t 红 - C 冷 × t 冷 ) = 7434563711 kJ

[0118] (2) Calculate the sensible heat of coke volatile matter and the combustion heat of volatile matter

[0119] The production report data of this 7.63-meter coke oven for that month showed that the volatile matter of the red coke was 1.21%; the volatile matter of the cold coke was 0.93%; the specific heat capacity of the red coke volatile matter was 1.802 kJ / (kg·°C); the specific heat capacity of the cold coke volatile matter was 1.46 kJ / (kg·°C); the combustion heat of hydrogen was 143000 kJ / Kg. The calculation is as follows according to the formula:

[0120] Q2 = M × (V 红 × t 红 - V 冷 × t 冷 ) + V 燃 = 2129447024 kJ

[0121] (3) Combustion heat of coke

[0122] The combustion heat per unit of coke is 33850 kJ / Kg. The calculation is as follows according to the formula:

[0123] Q3 = M × C 焦燃 × X = 180021000000X kJ

[0124] 2. Calculate and analyze the heat brought by the circulating gas from the dry quenching furnace into the boiler

[0125] Through heat accounting, it can be known that the heat transfer efficiency of this quenching furnace system is 0.83%. The calculation is as follows according to the formula:

[0126] Q4 = (Q1 + Q2 + Q3) × η = 7938128910 kJ + 149417000000X kJ

[0127] 3. Conduct a heat balance analysis of the waste heat boiler, specifically including the following aspects:

[0128] (1) Steam heat generated by the waste heat boiler

[0129] The enthalpy value of the 545°C high-pressure superheated steam of this 7.63-meter coke oven is 3508.2 kJ / Kg; the enthalpy value of the 256°C boiler water is 1135 kJ / Kg; the enthalpy value of the 105°C feed water is 436 kJ / Kg, and the boiler blowdown rate is 2%. The calculation is as follows according to the formula:

[0130] Q5 = (C 过热蒸汽焓 - C 炉水焓 ) × Y + (C 炉水焓 - C 给水焓 ) × A × Y = 3086180Y kJ

[0131] (2) Heat dissipation of the waste heat boiler

[0132] The heat dissipation coefficient of the waste heat boiler is 1.2%, and the calculation according to the formula is as follows:

[0133] Q6 = Q5 × q e = 37034.16Y kJ

[0134] The production report data of the 7.63-meter coke oven in that month was the steam output of 3444 t / d. According to the law of conservation of heat, based on Q4 = Q5 + Q6, the coke burn-off rate in the corresponding period was calculated to be 1.89%.

[0135] Still taking the above coke burn-off rate threshold of 0.9% as an example, the calculated coke burn-off rate is higher than the coke burn-off rate threshold. After checking the CDQ system, it is found that the system is not tightly sealed and there is air leakage, resulting in too high oxygen content in the furnace and it cannot be adjusted. It is necessary to arrange maintenance as soon as possible to reduce the coke burn-off loss.

[0136] In summary, the method for measuring the coke burn-off rate provided in the embodiments of this specification has at least the following beneficial effects:

[0137] (1) The data for measuring the coke burn-off rate uses the report data commonly used in daily production, which can be statistically calculated at any time, is convenient and simple, and the accuracy can meet the needs of production statistics;

[0138] (2) The data used for measurement comes from the large-scale production data, with a large amount of data and good accuracy and representativeness. Correspondingly, the repeatability, reproducibility, and accuracy of the measurement results of the coke burn-off rate are good;

[0139] (3) It can accurately measure the coke burn-off rate of coking enterprises, which is convenient for enterprises to judge whether the operating parameters of CDQ need to be adjusted and the equipment performance status is good by analyzing the burn-off rate, so as to reduce the production cost of CDQ and improve the output and efficiency of CDQ.

[0140] Based on the same inventive concept, the embodiments of this specification provide a device for measuring the coke burn-off rate, as Figure 2 shown. The device includes:

[0141] The first acquisition module 201 is used to acquire the coke output corresponding to the CDQ treatment, the red coke parameters charged into the CDQ furnace, and the cold coke parameters discharged from the CDQ furnace;

[0142] The first processing module 202 is used to determine the sensible heat of the red coke recovered in the CDQ furnace and determine the sensible heat of the coke volatile matter and the combustion heat of the volatile matter based on the coke output, the red coke parameters, and the cold coke parameters;

[0143] The second processing module 203 is used to determine the combustion heat of the coke recovered in the CDQ furnace based on the coke output, the heat of combustion per unit coke, and the coke burn-off rate;

[0144] A heat transfer amount determination module 204, configured to determine a target heat amount input to a waste heat boiler based on the sensible heat of the red coke, the sensible heat of the coke volatile matter and the heat of volatile matter combustion, the heat of coke combustion, and the heat transfer efficiency of the dry quenching furnace;

[0145] A second acquisition module 205, configured to acquire the steam heat amount generated by the waste heat boiler and acquire the heat dissipation amount of the waste heat boiler;

[0146] A coke burn-off rate determination module 206, configured to determine the coke burn-off rate based on the target heat amount, the steam heat amount of the waste heat boiler, and the heat dissipation amount of the waste heat boiler.

[0147] Optionally, the red coke parameters include the specific heat capacity of the red coke and the charging temperature of the red coke, and the cold coke parameters include the specific heat capacity of the cold coke and the discharging temperature of the cold coke; a first processing module 202 is configured to:

[0148] Determine the sensible heat of the red coke based on a preset sensible heat calculation formula for the red coke;

[0149] Wherein, the preset sensible heat calculation formula for the red coke is: Q1 = M × (C 红 × t 红 - C 冷 × t 冷 ), Q1 is the sensible heat of the red coke, M is the coke production amount, C 红 is the specific heat capacity of the red coke, t 红 is the charging temperature of the red coke, C 冷 is the specific heat capacity of the cold coke, t 冷 is the discharging temperature of the cold coke.

[0150] Optionally, the red coke parameters include the red coke volatile matter, the specific heat capacity of the red coke volatile matter, and the charging temperature of the red coke, and the cold coke parameters include the cold coke volatile matter, the specific heat capacity of the cold coke volatile matter, and the discharging temperature of the cold coke; a first processing module 202 is configured to:

[0151] Determine the sensible heat of the coke volatile matter and the heat of volatile matter combustion based on a preset calculation formula for the sensible heat of the coke volatile matter and the heat of volatile matter combustion;

[0152] Wherein, the preset calculation formula for the sensible heat of the coke volatile matter and the heat of volatile matter combustion is:

[0153]

[0154] Q2 is the sensible heat of the coke volatile matter and the heat of volatile matter combustion, M is the coke production amount, V 红 is the specific heat capacity of the red coke volatile matter, t 红 is the charging temperature of the red coke, V 冷is the specific heat capacity of the cold coke volatile matter, t 冷 is the discharge temperature of the cold coke, V 燃 is the combustion heat of the coke volatile matter, V d红 is the volatile matter of the red coke, V d红 is the volatile matter of the cold coke, C H is the heat of combustion of hydrogen.

[0155] Optionally, the second processing module 203 is configured to:

[0156] Determine the coke combustion heat based on a preset coke combustion heat calculation formula;

[0157] Wherein, the preset coke combustion heat calculation formula is: Q3 = M × C 焦燃 × X, Q3 is the coke combustion heat, M is the coke production, C 焦燃 is the unit coke combustion heat, and X is the coke burnout rate.

[0158] Optionally, the second acquisition module 205 is configured to:

[0159] Acquire the superheated steam enthalpy, boiler water enthalpy, feed water enthalpy, blowdown rate, and steam production corresponding to the waste heat boiler;

[0160] Determine the steam heat based on the superheated steam enthalpy, the boiler water enthalpy, the feed water enthalpy, the blowdown rate, the steam production, and a preset steam heat calculation formula;

[0161] Wherein, the preset steam heat calculation formula is:

[0162] Q5 = (C 过热蒸汽焓 - C 炉水焓 ) × Y + (C 炉水焓 - C 给水焓 ) × A × Y

[0163] Q5 is the steam heat, C 过热蒸汽焓 is the superheated steam enthalpy, C 炉水焓 is the boiler water enthalpy, C 给水焓 is the feed water enthalpy, A is the blowdown rate, and Y is the steam production.

[0164] Optionally, the second acquisition module 205 is configured to:

[0165] Acquire the heat dissipation coefficient of the waste heat boiler;

[0166] Determine the heat dissipation of the waste heat boiler based on the heat dissipation coefficient of the waste heat boiler and the steam heat.

[0167] Optionally, the transmitted heat determination module 204 is configured to:

[0168] Calculate the total heat of the sensible heat of the red coke, the combustion heat of the coke, the sensible heat of the volatile components of the coke, and the combustion heat of the volatile components;

[0169] Determine the target heat based on the total heat and the heat transfer efficiency of the dry quenching furnace system.

[0170] Regarding the above device, the specific functions of each module have been described in detail in the embodiments of the method for measuring the burnout rate of coke in dry quenching provided in this specification, and will not be elaborated here.

[0171] Based on the same inventive concept as the method for measuring the burnout rate of coke in dry quenching in the foregoing embodiments, the embodiments of this specification also provide a device for the method for measuring the burnout rate of coke in dry quenching, including a memory, a processor, and a computer program stored on the memory and executable on the processor. When the processor executes the program, the steps of the method for measuring the burnout rate of coke in dry quenching described above are implemented.

[0172] Based on the inventive concept of the method for measuring the burnout rate of coke in dry quenching in the foregoing embodiments, the embodiments of this specification also provide a computer-readable storage medium, on which a computer program is stored. When the program is executed by a processor, the steps of any of the methods for measuring the burnout rate of coke in dry quenching described above are implemented.

[0173] This specification is described with reference to the flowcharts and / or block diagrams of methods, apparatuses (systems), and computer program products according to the embodiments of this specification. It should be understood that each flow and / or block in the flowcharts and / or block diagrams, and the combination of flows and / or blocks in the flowcharts and / or block diagrams, can be implemented by computer program instructions. These computer program instructions can be provided to the processor of a general-purpose computer, a special-purpose computer, an embedded processor, or other programmable data processing devices to generate a machine, such that the instructions executed by the processor of the computer or other programmable data processing devices generate a device for implementing the functions specified in Figure 1 one or more flows and / or blocks Figure 1 one or more blocks

[0174] These computer program instructions can also be stored in a computer-readable memory that can direct a computer or other programmable data processing device to work in a specific manner, such that the instructions stored in the computer-readable memory generate a manufactured article including an instruction device that implements the functions specified in Figure 1 one or more flows and / or blocks Figure 1 one or more blocks

[0175] These computer program instructions can also be loaded onto a computer or other programmable data processing apparatus, so that a series of operation steps are executed on the computer or other programmable apparatus to produce a computer-implemented process, thereby providing instructions for implementing the process Figure 1 one process or a plurality of processes and / or blocks Figure 1 steps for implementing the functions specified in one block or a plurality of blocks.

[0176] Although the preferred embodiments of the present specification have been described, additional changes and modifications can be made by those skilled in the art once they learn the basic creative concept. Therefore, the appended claims are intended to be construed to include the preferred embodiments as well as all changes and modifications falling within the scope of the present specification.

[0177] Obviously, those skilled in the art can make various changes and modifications to the present specification without departing from the spirit and scope of the present specification. Thus, if these modifications and variations of the present specification fall within the scope of the claims of the present specification and their equivalent technologies, the present specification is also intended to include these modifications and variations.

Claims

1. A method for measuring the burnout rate of coke dry quenching, characterized in that, Including: Obtaining the coke production corresponding to the coke dry quenching treatment, the red coke parameters charged into the coke dry quenching furnace, and the cooled coke parameters discharged from the coke dry quenching furnace; Based on the coke production, the red coke parameters, and the cooled coke parameters, determining the sensible heat of the red coke recovered in the coke dry quenching furnace, and determining the sensible heat of coke volatile matter and the combustion heat of volatile matter; Based on the coke production, the calorific value of unit coke combustion, and the coke burnout rate, determining the combustion heat of coke recovered in the coke dry quenching furnace; Based on the sensible heat of the red coke, the sensible heat of coke volatile matter and the combustion heat of volatile matter, the combustion heat of coke, and the heat transfer efficiency of the coke dry quenching furnace, determining the target heat input to the waste heat boiler; Obtaining the steam heat generated by the waste heat boiler and obtaining the heat dissipation of the waste heat boiler; Based on the target heat, the steam heat of the waste heat boiler, and the heat dissipation of the waste heat boiler, determining the coke burnout rate; Wherein, the red coke parameters include red coke volatile matter, specific heat capacity of red coke volatile matter, and red coke charging temperature, and the cooled coke parameters include cooled coke volatile matter, specific heat capacity of cooled coke volatile matter, and cooled coke discharge temperature; based on a preset calculation formula for the sensible heat of coke volatile matter and the combustion heat of volatile matter, determining the sensible heat of coke volatile matter and the combustion heat of volatile matter; the preset calculation formula for the sensible heat of coke volatile matter and the combustion heat of volatile matter is: Q2 is the sensible heat of the coke volatile matter and the combustion heat of the volatile matter, M is the coke production, V 红 is the specific heat capacity of the volatile matter of the red-hot coke, t 红 is the charging temperature of the red-hot coke, V 冷 is the specific heat capacity of the volatile matter of the quenched coke, t 冷 is the discharge temperature of the quenched coke, V 燃 is the combustion heat of the coke volatile matter, V d红 is the volatile matter of the red-hot coke, V d冷 is the volatile matter of the quenched coke, C H is the heat of combustion of hydrogen.

2. The method according to claim 1, wherein The red coke parameters include the specific heat capacity of red coke and the red coke charging temperature, and the cooled coke parameters include the specific heat capacity of cooled coke and the cooled coke discharge temperature; the determining of the sensible heat of the red coke recovered in the coke dry quenching furnace includes: Based on a preset calculation formula for the sensible heat of red coke, determining the sensible heat of red coke; Among them, the preset formula for the sensible heat of red coke is: Q1 = M × (C_red × t_red - C_cold × t_cold), where Q1 is the sensible heat of red coke, M is the coke production, C 红 is the specific heat capacity of red coke, t 红 is the charging temperature of red coke, C 冷 is the specific heat capacity of cold coke, t 冷 is the discharge temperature of cold coke.

3. The method according to claim 1, characterized in that The determining of the combustion heat of coke recovered in the coke dry quenching furnace based on the coke production, the calorific value of unit coke combustion, and the coke burnout rate includes: Based on a preset calculation formula for the combustion heat of coke, determining the combustion heat of coke; Among them, the preset calculation formula for the combustion heat of coke is: Q3 = M × C 焦燃 × X, where Q3 is the combustion heat of the coke, M is the coke production, and C 焦燃 is the combustion heat per unit of coke, and X is the coke burn-off rate.

4. The method according to claim 1, wherein The obtaining of the steam heat generated by the waste heat boiler includes: Obtaining the enthalpy of superheated steam, the enthalpy of boiler water, the enthalpy of feed water, the blowdown rate, and the steam production corresponding to the waste heat boiler; Based on the enthalpy of superheated steam, the enthalpy of boiler water, the enthalpy of feed water, the blowdown rate, the steam production, and a preset calculation formula for steam heat, determining the steam heat; Wherein, the preset calculation formula for steam heat is: Q5 = (Csuperheated steam enthalpy - Cboiler water enthalpy) × Y + (Cboiler water enthalpy - Cfeed water enthalpy) × A × Y Q5 is the steam heat, C 过热蒸汽焓 is the enthalpy of superheated steam, C 炉水焓 is the enthalpy of the boiler water, C 给水焓 is the enthalpy of the feed water, A is the blowdown rate, and Y is the steam output.

5. The method according to claim 4, wherein The obtaining of the heat dissipation of the waste heat boiler includes: Obtaining the heat dissipation coefficient of the waste heat boiler; Based on the heat dissipation coefficient of the waste heat boiler and the steam heat, determining the heat dissipation of the waste heat boiler.

6. The method according to claim 1, wherein The determining of the target heat input to the waste heat boiler based on the sensible heat of the red coke, the sensible heat of coke volatile matter and the combustion heat of volatile matter, the combustion heat of coke, and the heat transfer efficiency of the coke dry quenching furnace includes: Calculating the total heat of the sensible heat of the red coke, the combustion heat of coke, the sensible heat of coke volatile matter and the combustion heat of volatile matter; Based on the total heat and the heat transfer efficiency of the coke dry quenching furnace system, determining the target heat.

7. A measuring device for the burnout rate of coke dry quenching, characterized in that, Including: A first acquisition module, configured to acquire the coke production corresponding to the coke dry quenching treatment, the red coke parameters charged into the coke dry quenching furnace, and the cold coke parameters discharged from the coke dry quenching furnace; A first processing module, configured to determine the sensible heat of the red coke recovered in the coke dry quenching furnace, and determine the sensible heat of the coke volatile matter and the combustion heat of the volatile matter based on the coke production, the red coke parameters, and the cold coke parameters; A second processing module, configured to determine the combustion heat of the coke recovered in the coke dry quenching furnace based on the coke production, the combustion heat per unit coke, and the coke burnout rate; A transmitted heat determination module, configured to determine the target heat input to the waste heat boiler based on the sensible heat of the red coke, the sensible heat of the coke volatile matter and the combustion heat of the volatile matter, the combustion heat of the coke, and the heat transfer efficiency of the coke dry quenching furnace; A second acquisition module, configured to acquire the steam heat generated by the waste heat boiler and the heat dissipation of the waste heat boiler; A coke burnout rate determination module, configured to determine the coke burnout rate based on the target heat, the steam heat of the waste heat boiler, and the heat dissipation of the waste heat boiler; Wherein, the red coke parameters include the red coke volatile matter, the specific heat capacity of the red coke volatile matter, and the red coke charging temperature, and the cold coke parameters include the cold coke volatile matter, the specific heat capacity of the cold coke volatile matter, and the cold coke discharge temperature; the first processing module is further configured to determine the sensible heat of the coke volatile matter and the combustion heat of the volatile matter based on a preset calculation formula for the sensible heat of the coke volatile matter and the combustion heat of the volatile matter; the preset calculation formula for the sensible heat of the coke volatile matter and the combustion heat of the volatile matter is: Q2 is the sensible heat of the coke volatile matter and the combustion heat of the volatile matter, M is the coke production, V 红 is the specific heat capacity of the volatile matter of the red coke, t 红 is the charging temperature of the red coke, V 冷 is the specific heat capacity of the volatile matter of the quenched coke, t 冷 is the discharge temperature of the quenched coke, V 燃 is the combustion heat of the coke volatile matter, V d红 is the volatile matter of the red coke, V d冷 is the volatile matter of the quenched coke, C H is the heat of combustion of hydrogen.

8. A measuring device for the burnout rate of coke dry quenching, characterized in that, Comprising a memory, a processor, and a computer program stored on the memory and executable on the processor, wherein when the processor executes the program, the steps of the method according to any one of claims 1-6 are implemented.

9. A computer storage medium, characterized in that, Stored thereon is a computer program, which when executed by a processor implements the steps of the method according to any one of claims 1-6.

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