A method, system and readable storage medium for obtaining the direct reduction degree and indirect reduction degree in blast furnace ironmaking

Abstract

The present invention provides a method, a system and a readable storage medium for obtaining the direct reduction degree and the indirect reduction degree of blast furnace ironmaking, comprising the following steps: S1: Collect the gas parameters of the blast furnace top and the gas parameters of the blast furnace tuyere blowing; S2: Calculate and obtain the blast furnace top gas volume V 炉顶煤气量 , the carbon mass m 炉顶煤气C of the gas in the blast furnace top, and the carbon mass m 风口气化C gasified in front of the blast furnace tuyere; S3: Calculate and obtain the carbon mass m 直接还原C directly reduced by the blast furnace through the data in S1 and the calculation results in S2; S4: Calculate and obtain the carbon mass m 间接还原C indirectly reduced by the blast furnace through the data in S1 and the calculation results in S2; S5: Calculate and obtain the direct reduction degree r d of the blast furnace through the data in S1 and the calculation results in S3 and S4; S6: Calculate and obtain the indirect reduction degree r i of the blast furnace through the data in S1 and the calculation results in S3 and S4. The present invention can be used to calculate in real time the direct reduction degree and the indirect reduction degree of blast furnace ironmaking at a certain moment or within a certain period of time.

Description

Technical Field

[0001] The present invention relates to the technical field of iron and steel metallurgy, and particularly to a method, a system and a readable storage medium for obtaining the direct reduction degree and the indirect reduction degree of blast furnace ironmaking.

Background Art

[0002] During the blast furnace ironmaking process, according to the thermodynamic analysis of iron oxides, the reduction of higher-order iron oxides in the blast furnace to FeO is mainly indirect reduction. However, from the reduction of FeO to metallic iron, part is indirect reduction and the rest is direct reduction. The direct reduction degree r of iron d is defined as the ratio of the amount of iron reduced by direct reduction from FeO to the total amount of reduced iron. For the calculation of the direct reduction degree and the indirect reduction degree, the current obtaining method is to calculate through iron elements or oxygen elements. However, in the actual calculation and use process, due to the fact that the on-site detection components in the production cannot provide some parameters required for the calculation, real-time calculation cannot be carried out, and the direct reduction degree and the indirect reduction degree are mostly estimated.

[0003] Therefore, it is necessary to study a method, a system and a readable storage medium for obtaining the direct reduction degree and the indirect reduction degree of blast furnace ironmaking to address the deficiencies of the existing technology and solve or alleviate one or more of the above problems.

Summary of the Invention

[0004] In view of this, the present invention provides a method, a system and a readable storage medium for obtaining the direct reduction degree and the indirect reduction degree of blast furnace ironmaking, which are used for calculating in real time the direct reduction degree and the indirect reduction degree of blast furnace ironmaking at a certain moment or within a certain period of time.

[0005] On the one hand, the present invention provides a method for obtaining the direct reduction degree and the indirect reduction degree of blast furnace ironmaking, and the obtaining method includes the following steps:

[0006] S1: Collect the gas parameters of the blast furnace top and the gas parameters of the blast furnace tuyere blowing.

[0007] S2: Calculate and obtain the blast furnace top gas volume V 炉顶煤气量 , the carbon mass m 炉顶煤气C of the gas in the blast furnace top and the carbon mass m 风口气化C of the gasified carbon in front of the blast furnace tuyere through the gas parameters of the blast furnace top and the gas parameters of the blast furnace tuyere blowing in S1.

[0008] S3: Calculate and obtain the carbon mass m 炉顶煤气量 of the direct reduction of the blast furnace through the gas parameters of the blast furnace top and the gas parameters of the blast furnace tuyere blowing in S1 and the blast furnace top gas volume V 炉顶煤气C , the carbon mass m 风口气化C of the gas in the blast furnace top and the carbon mass m 直接还原C of the gasified carbon in front of the blast furnace tuyere in S2.

[0009] S4: Calculate the carbon mass \(m\) of indirect reduction in the blast furnace by using the gas parameters at the top of the blast furnace in S1, the gas parameters of the blast furnace tuyere air, and the top gas volume \(V\) of the blast furnace in S2 炉顶煤气量 , the carbon mass \(m\) of the gas in the top of the blast furnace 炉顶煤气C and the carbon mass \(m\) gasified in front of the blast furnace tuyere 风口气化C , and calculate the carbon mass \(m\) of indirect reduction in the blast furnace 间接还原C ;

[0010] S5: Calculate the direct reduction degree \(r\) of the blast furnace by using the carbon mass \(m\) of direct reduction in the blast furnace in S3 直接还原C and the carbon mass \(m\) of indirect reduction in the blast furnace in S4 间接还原C ; d ;

[0011] S6: Calculate the indirect reduction degree \(r\) of the blast furnace by using the carbon mass \(m\) of direct reduction in the blast furnace in S3 直接还原C and the carbon mass \(m\) of indirect reduction in the blast furnace in S4 间接还原C ; i .

[0012] For the aspects and any possible implementation manners described above, a further implementation manner is provided. The gas parameters at the top of the blast furnace in S1 include, but are not limited to, the cold air volume \(V\) of the blast furnace tuyere air (\(m\) 3 ), the nitrogen volume fraction in the top gas of the blast furnace the carbon monoxide volume fraction in the top gas of the blast furnace and the carbon dioxide volume fraction in the top gas of the blast furnace The gas parameters of the blast furnace tuyere air include, but are not limited to, the oxygen volume \(V\) of the oxygen-enriched blast furnace tuyere air O2 (\(m\) 3 ), the nitrogen volume fraction in the blast volume of the blast furnace tuyere air and the oxygen volume fraction in the blast volume of the blast furnace tuyere air

[0013] For the aspects and any possible implementation manners described above, a further implementation manner is provided. S2 specifically includes:

[0014] S21: Calculate the top gas volume of the blast furnace. The acquisition method is:

[0015] S22: Calculate the carbon mass in the top gas of the blast furnace. The acquisition method is:

[0016] where \(V\) m is the molar volume of the gas, \(0.0224m\) 3 ·mol -1 ; \(M\) C is the molar mass of carbon atoms, \(12g·mol\)-1 ;

[0017] S23: Calculate the mass of carbon gasified in front of the blast furnace tuyere, and the acquisition method is as follows:

[0018] Where V m is the molar volume of gas, 0.0224 m 3 ·mol -1 ; M C is the molar mass of carbon atoms, 12 g·mol -1 .

[0019] In the above-mentioned aspects and any possible implementation manners, a further implementation manner is provided. The method for obtaining the mass of carbon directly reduced in the blast furnace ironmaking process involved in S3 is as follows:

[0020] Where V m is the molar volume of gas, 0.0224 m 3 ·mol -1 ; M C is the molar mass of carbon atoms, 12 g·mol -1 .

[0021] In the above-mentioned aspects and any possible implementation manners, a further implementation manner is provided. The method for obtaining the mass of carbon indirectly reduced in the blast furnace ironmaking process involved in S4 is as follows:

[0022] Where V m is the molar volume of gas, 0.0224 m 3 ·mol -1 ; M C is the molar mass of carbon atoms, 12 g·mol -1 .

[0023] In the above-mentioned aspects and any possible implementation manners, a further implementation manner is provided. The method for obtaining the direct reduction degree r d in the blast furnace ironmaking process involved in S5 is as follows:

[0024]

[0025] In the above-mentioned aspects and any possible implementation manners, a further implementation manner is provided. The method for obtaining the indirect reduction degree r i in the blast furnace ironmaking process involved in S6 is as follows:

[0026]

[0027] For the aspects and any possible implementation manners described above, a further implementation manner is provided, where the directly reduced degree and the indirectly reduced degree calculated in S5 and S6 are the average value within a period of time or the instantaneous value at different moments during the blast furnace smelting process.

[0028] For the aspects and any possible implementation manners described above, a further system for obtaining the directly reduced degree and the indirectly reduced degree of blast furnace ironmaking is provided. The system obtains the directly reduced degree and the indirectly reduced degree through the obtaining method described above. The obtaining system includes:

[0029] A data acquisition module, which is used to acquire the gas parameters of the blast furnace top and the gas parameters of the blast furnace tuyere blowing;

[0030] A calculation module, and the judgment module is used to calculate the blast furnace top gas volume V 炉顶煤气量 , the carbon mass m of the gas in the blast furnace top 炉顶煤气C and the carbon mass m gasified in front of the blast furnace tuyere 风口气化C , the carbon mass m directly reduced in the blast furnace 直接还原C , the carbon mass m indirectly reduced in the blast furnace 间接还原C , the directly reduced degree r of the blast furnace d and the indirectly reduced degree r of the blast furnace i .

[0031] For the aspects and any possible implementation manners described above, a further non-volatile computer-readable storage medium storing a computer program is provided. When the computer program is executed by one or more processors, the processors execute the method for obtaining the directly reduced degree and the indirectly reduced degree of blast furnace ironmaking.

[0032] Compared with the prior art, the present invention can obtain the following technical effects:

[0033] For the blast furnace ironmaking process, in the past, the directly reduced degree and the indirectly reduced degree inside the blast furnace were calculated based on iron elements or oxygen elements. However, when using these two methods, some of the required parameters do not have monitoring components that can directly detect them, so they can only be used as methods for estimating the directly reduced degree and the indirectly reduced degree. The present invention can calculate the directly reduced degree and the indirectly reduced degree of blast furnace smelting in real time based on existing data such as blast furnace top gas composition and blast furnace blowing operation parameters, so as to measure the current blast furnace production status and contribute to reducing emissions and consumption in blast furnace ironmaking.

[0034] Of course, it is not necessary for any product implementing the present invention to achieve all the technical effects described above at the same time.

Description of the Drawings

[0035] To more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required for use in the embodiments will be briefly introduced below. Obviously, the drawings in the following description are only some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can be obtained based on these drawings.

[0036] Figure 1 It is a flowchart of the acquisition method provided by an embodiment of the present invention.

Specific Embodiments

[0037] To better understand the technical solutions of the present invention, the embodiments of the present invention will be described in detail below with reference to the drawings.

[0038] It should be clear that the described embodiments are only some embodiments of the present invention, rather than all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts belong to the scope of protection of the present invention.

[0039] The terms used in the embodiments of the present invention are only for the purpose of describing specific embodiments, and are not intended to limit the present invention. The singular forms of "a", "the", and "said" used in the embodiments of the present invention and the appended claims are also intended to include the plural forms, unless the context clearly indicates otherwise.

[0040] As Figure 1 shown, the present invention provides a method for obtaining the direct reduction degree and indirect reduction degree of blast furnace ironmaking. The acquisition method includes the following steps:

[0041] S1: Collect the gas parameters of the blast furnace top and the gas parameters of the blast furnace tuyere blowing;

[0042] S2: Calculate and obtain the blast furnace top gas volume V 炉顶煤气量 of the blast furnace, the carbon mass m 炉顶煤气C of the gas in the blast furnace top, and the carbon mass m 风口气化C gasified in front of the blast furnace tuyere;

[0043] S3: Calculate and obtain the carbon mass m 炉顶煤气量 of the direct reduction of the blast furnace through the gas parameters of the blast furnace top and the gas parameters of the blast furnace tuyere blowing in S1 and the blast furnace top gas volume V 炉顶煤气C of the blast furnace, the carbon mass m 风口气化C of the gas in the blast furnace top, and the carbon mass m 直接还原C gasified in front of the blast furnace tuyere;

[0044] S4: Through the gas parameters of the blast furnace top and the gas parameters of the blast furnace tuyere blowing in S1 and the blast furnace top gas volume V in S2炉顶煤气量 and the carbon mass m 炉顶煤气C gasified in front of the blast furnace tuyere 风口气化C , calculate the carbon mass m 间接还原C for indirect reduction in the blast furnace;

[0045] S5: Through the carbon mass m 直接还原C for direct reduction in the blast furnace in S3 间接还原C and the carbon mass m d for indirect reduction in the blast furnace in S4, calculate the direct reduction degree r 炉顶煤气量 of the blast furnace (or directly through the gas parameters at the blast furnace top in S1, the gas parameters of the blast furnace tuyere blowing, and the blast furnace top gas volume V 炉顶煤气C in S2, the carbon mass m 风口气化C of the gas in the blast furnace top, and the carbon mass m d ) gasified in front of the blast furnace tuyere;

[0046] S6: Through the carbon mass m 直接还原C for direct reduction in the blast furnace in S3 间接还原C and the carbon mass m i for indirect reduction in the blast furnace in S4, calculate the indirect reduction degree r 炉顶煤气量 of the blast furnace (or directly through the gas parameters at the blast furnace top in S1, the gas parameters of the blast furnace tuyere blowing, and the blast furnace top gas volume V 炉顶煤气C in S2, the carbon mass m 风口气化C of the gas in the blast furnace top, and the carbon mass m i ) gasified in front of the blast furnace tuyere.

[0047] The gas parameters at the blast furnace top in S1 include but are not limited to the cold air volume V (m 3 ) of the blast furnace tuyere blowing, the nitrogen volume fraction in the blast furnace top gas , the carbon monoxide volume fraction in the blast furnace top gas , and the carbon dioxide volume fraction in the blast furnace top gas The gas parameters of the blast furnace tuyere blowing include but are not limited to the oxygen volume V O2 (m 3 ) of the oxygen enrichment in the blast furnace tuyere blowing, the nitrogen volume fraction in the blast furnace tuyere blowing air volume , and the oxygen volume fraction in the blast furnace tuyere blowing air volume

[0048] S2 specifically includes:

[0049] S21: Calculate the blast furnace top gas volume, and its acquisition method is:

[0050] S22: Calculate the carbon mass in the blast furnace top gas, and the acquisition method is as follows:

[0051] Among them, V m is the molar volume of gas, 0.0224 m 3 ·mol -1 ; M C is the molar mass of carbon atoms, 12 g·mol -1 ;

[0052] S23: Calculate the carbon mass gasified in front of the blast furnace tuyere, and the acquisition method is as follows:

[0053] Among them, V m is the molar volume of gas, 0.0224 m 3 ·mol -1 ; M C is the molar mass of carbon atoms, 12 g·mol -1 .

[0054] The acquisition method of the carbon mass directly reduced in the blast furnace ironmaking process involved in S3 is as follows:

[0055] Among them, V m is the molar volume of gas, 0.0224 m 3 ·mol -1 ; M C is the molar mass of carbon atoms, 12 g·mol -1 .

[0056] The acquisition method of the carbon mass indirectly reduced in the blast furnace ironmaking process involved in S4 is as follows:

[0057] Among them, V m is the molar volume of gas, 0.0224 m 3 ·mol -1 ; M C is the molar mass of carbon atoms, 12 g·mol -1 .

[0058] The acquisition method of the direct reduction degree r d in the blast furnace ironmaking process involved in S5 is as follows:

[0059]

[0060] The acquisition method of the indirect reduction degree r i in the blast furnace ironmaking process involved in S6 is as follows:

[0061]

[0062] The directly reduced degree and indirectly reduced degree calculated in S5 and S6 are the average values within a period of time or the instantaneous values at different moments during the blast furnace smelting process.

[0063] The present invention also provides a system for obtaining the directly reduced degree and indirectly reduced degree in blast furnace ironmaking. The system obtains the directly reduced degree and indirectly reduced degree through the above-mentioned obtaining method. The obtaining system includes:

[0064] A data acquisition module, which is used to acquire the gas parameters of the blast furnace top and the gas parameters of the blast furnace tuyere.

[0065] A calculation module, and the judgment module is used to calculate the blast furnace top gas volume V 炉顶煤气量 , the carbon mass m of the gas in the blast furnace top 炉顶煤气C and the carbon mass m gasified in front of the blast furnace tuyere 风口气化C , the carbon mass m directly reduced in the blast furnace 直接还原C , the carbon mass m indirectly reduced in the blast furnace 间接还原C , the directly reduced degree r of the blast furnace d and the indirectly reduced degree r of the blast furnace i .

[0066] The present invention also provides a non-volatile computer-readable storage medium storing a computer program. When the computer program is executed by one or more processors, the processors are caused to execute the method for obtaining the directly reduced degree and indirectly reduced degree in blast furnace ironmaking.

[0067] Example 1

[0068] The cold air volume V (m 3 ) of the blast furnace tuyere: 2000;

[0069] The oxygen volume V O2 (m 3 ) of the oxygen-enriched blast furnace tuyere: 250;

[0070] The nitrogen volume fraction in the blast furnace tuyere air volume 0.78;

[0071] The oxygen volume fraction in the blast furnace tuyere air volume 0.21;

[0072] The nitrogen volume fraction in the blast furnace top gas 0.46;

[0073] The carbon monoxide volume fraction in the blast furnace top gas 0.27;

[0074] The carbon dioxide volume fraction in the blast furnace top gas 0.25;

[0075] At this time:

[0076] The volume of blast furnace top gas V 炉顶煤气量 is: 3395.65 m 3 ;

[0077] The mass of carbon m in the blast furnace top gas 炉顶煤气C is: 945931.68 g;

[0078] The mass of carbon m gasified in front of the blast furnace tuyere 风口气化C is: 715714.29 g;

[0079] The mass of carbon m directly reduced in the blast furnace 直接还原C is: 230217.39 g;

[0080] The mass of carbon m indirectly reduced in the blast furnace 间接还原C is: 454774.84 g;

[0081] The direct reduction degree r of blast furnace ironmaking d is: 0.34;

[0082] The indirect reduction degree r of blast furnace ironmaking i is: 0.66.

[0083] Example 2

[0084] The volume of cold air in the blast furnace tuyere V (m 3 ): 3000;

[0085] The volume of oxygen V in the oxygen-enriched blast furnace tuyere O2 (m 3 ) : 230;

[0086] The volume fraction of nitrogen in the blast furnace tuyere air volume 0.78;

[0087] The volume fraction of oxygen in the blast furnace tuyere air volume 0.21;

[0088] The volume fraction of nitrogen in the blast furnace top gas 0.52;

[0089] The volume fraction of carbon monoxide in the blast furnace top gas 0.23;

[0090] The volume fraction of carbon dioxide in the blast furnace top gas 0.22;

[0091] At this time:

[0092] The volume of blast furnace top gas V 炉顶煤气量 is: 4505.77 m 3 ;

[0093] The mass of carbon m in the blast furnace top gas 炉顶煤气C is: 1,086,212.23 g;

[0094] The mass of carbon m gasified in front of the blast furnace tuyere 风口气化C is: 918,214.29 g;

[0095] The mass of carbon m directly reduced in the blast furnace 直接还原C is: 167,997.94 g;

[0096] The mass of carbon m indirectly reduced in the blast furnace 间接还原C is: 531,037.09 g;

[0097] The direct reduction degree r of blast furnace ironmaking d is: 0.24;

[0098] The indirect reduction degree r of blast furnace ironmaking i is: 0.76.

[0099] Example 3

[0100] The cold air volume V of the blast furnace blast (m 3 ) : 4000;

[0101] The oxygen volume V of the oxygen - enriched blast furnace blast O2 (m 3 ) : 210;

[0102] The volume fraction of nitrogen in the blast furnace blast air volume 0.78;

[0103] The volume fraction of oxygen in the blast furnace blast air volume 0.21;

[0104] The volume fraction of nitrogen in the blast furnace top gas 0.49;

[0105] The volume fraction of carbon monoxide in the blast furnace top gas 0.21;

[0106] The volume fraction of carbon dioxide in the blast furnace top gas 0.19;

[0107] At this time:

[0108] The blast furnace top gas volume V 炉顶煤气量 is: 6375.51 m 3 ;

[0109] The mass of carbon m in the blast furnace top gas 炉顶煤气C is: 1,366,180.76 g;

[0110] The mass m of carbon gasified in front of the blast furnace tuyere 风口气化C is: 1120714.29 g;

[0111] The mass m of carbon directly reduced in the blast furnace 直接还原C is: 245466.47 g;

[0112] The mass m of carbon indirectly reduced in the blast furnace 间接还原C is: 648935.86 g;

[0113] The direct reduction degree r of blast furnace ironmaking d is: 0.27;

[0114] The indirect reduction degree r of blast furnace ironmaking i is: 0.73.

[0115] Example 4

[0116] The volume V of cold air in the blast furnace blast (m 3 ) : 5000;

[0117] The volume V of oxygen in the oxygen - enriched blast furnace blast O2 (m 3 ) : 200;

[0118] The volume fraction of nitrogen in the blast furnace blast air volume 0.78;

[0119] The volume fraction of oxygen in the blast furnace blast air volume 0.21;

[0120] The volume fraction of nitrogen in the blast furnace top gas 0.50;

[0121] The volume fraction of carbon monoxide in the blast furnace top gas 0.22;

[0122] The volume fraction of carbon dioxide in the blast furnace top gas 0.20;

[0123] At this time:

[0124] The volume V of the blast furnace top gas 炉顶煤气量 is: 7810.00 m 3 ;

[0125] The mass m of carbon in the blast furnace top gas 炉顶煤气C is: 1757250.00 g;

[0126] The mass m of carbon gasified in front of the blast furnace tuyere 风口气化C is: 1333928.57 g;

[0127] The mass m of carbon for direct reduction in the blast furnace 直接还原C is: 423321.43 g;

[0128] The mass m of carbon for indirect reduction in the blast furnace 间接还原C is: 836785.71 g;

[0129] The direct reduction degree r of ironmaking in the blast furnace d is: 0.34;

[0130] The indirect reduction degree r of ironmaking in the blast furnace i is: 0.66.

[0131] Example 5

[0132] The volume V (m 3 ) of cold air for blast in the blast furnace: 6000;

[0133] The volume V of oxygen for oxygen enrichment of blast in the blast furnace O2 (m 3 ) : 180;

[0134] The volume fraction of nitrogen in the blast volume of the blast furnace 0.78;

[0135] The volume fraction of oxygen in the blast volume of the blast furnace 0.21;

[0136] The volume fraction of nitrogen in the top gas of the blast furnace 0.52;

[0137] The volume fraction of carbon monoxide in the top gas of the blast furnace 0.20;

[0138] The volume fraction of carbon dioxide in the top gas of the blast furnace 0.22;

[0139] At this time:

[0140] The volume V of the top gas of the blast furnace 炉顶煤气量 is: 9011.54 m 3 ;

[0141] The mass m of carbon in the top gas of the blast furnace 炉顶煤气C is: 2027596.15 g;

[0142] The mass m of carbon gasified in front of the tuyere of the blast furnace 风口气化C is: 1536428.57 g;

[0143] The mass m of carbon for direct reduction in the blast furnace 直接还原C is: 491167.58 g;

[0144] The mass m of carbon for indirect reduction in the blast furnace 间接还原CIt is: 1062074.18 g;

[0145] The direct reduction degree r of blast furnace ironmaking d It is: 0.32;

[0146] The indirect reduction degree r of blast furnace ironmaking i It is: 0.68.

[0147] During the blast furnace ironmaking process, the distribution of the direct reduction degree and the indirect reduction degree directly affects the fuel ratio of the blast furnace. However, currently, due to the fact that some process parameters cannot be obtained by detection components in the calculation methods of the direct reduction degree and the indirect reduction degree based on iron elements or oxygen elements, there is no simple and fast method to calculate the direct reduction degree and the indirect reduction degree in real time online during the blast furnace production process. The method proposed in the present invention is based on nitrogen elements and carbon elements. Taking the calculation of the carbon content in the top gas of the furnace and the mass of carbon gasified in front of the tuyere as a bridge, the mass of carbon participating in direct reduction and indirect reduction is obtained, and then the calculation of the direct reduction degree and the indirect reduction degree of blast furnace ironmaking is realized. Compared with the current method, the method proposed in the present invention solves the problem that relevant parameters cannot be known in the calculation process, and all the calculation process parameters can be obtained in real time by the existing detection components of the blast furnace, effectively enhancing the calculation efficiency and computability of the direct reduction degree and the indirect reduction degree. Therefore, based on this method, a real-time online calculation model software for the direct reduction degree and the indirect reduction degree of blast furnace ironmaking or an extended model software based on the direct reduction degree and the indirect reduction degree can be developed.

[0148] An application of a method for obtaining the direct reduction degree and the indirect reduction degree of blast furnace ironmaking, specifically: obtaining the direct reduction degree and the indirect reduction degree of blast furnace ironmaking through the obtaining method described in the present invention can help blast furnace operators timely understand the proportion of the form (direct reduction or indirect reduction) of the reduction reaction occurring inside the blast furnace. Since the heat consumed by direct reduction and indirect reduction is different, blast furnace operators can then timely adjust the fuel amount used in the blast furnace. For example, when the direct reduction degree calculated by the obtaining method of the direct reduction degree and the indirect reduction degree described in the present invention increases and the indirect reduction degree decreases, due to the large amount of heat consumed by direct reduction, it will cause insufficient heat in the blast furnace. At this time, the supply of coke or pulverized coal in the blast furnace should be increased. On the contrary, when the calculated direct reduction degree decreases and the indirect reduction degree increases, due to the heat release of indirect reduction, it will cause excessive heat in the blast furnace. At this time, the supply of coke or pulverized coal in the blast furnace should be reduced. In summary, by calculating and obtaining the direct reduction degree and the indirect reduction degree and adjusting the fuel consumption of the blast furnace accordingly, the thermal state of the blast furnace can be stabilized, and the stable and smooth operation of the blast furnace can be promoted.

[0149] The above has introduced in detail a method, a system, and a readable storage medium for obtaining the direct reduction degree and the indirect reduction degree in blast furnace ironmaking provided by the embodiments of the present application. The description of the above embodiments is only used to help understand the method and its core idea of the present application; at the same time, for those of ordinary skill in the art, according to the idea of the present application, there will be changes in the specific implementation manner and the application scope. In summary, the content of this specification should not be construed as a limitation to the present application.

[0150] As used in the specification and the claims, certain terms are used to refer to specific components. Those skilled in the art should understand that hardware manufacturers may use different terms to refer to the same component. The specification and the claims do not use the difference in names as a way to distinguish components, but use the difference in functions of components as the criterion for distinction. As mentioned throughout the specification and the claims, "comprising" and "including" are open-ended terms, so they should be interpreted as "comprising / including but not limited to". "Substantially" means within an acceptable error range. Those skilled in the art can solve the technical problem within a certain error range and basically achieve the technical effect. The subsequent description in the specification is the preferred implementation manner for implementing the present application, but the description is for the purpose of explaining the general principle of the present application and is not used to limit the scope of the present application. The protection scope of the present application shall be subject to what is defined by the appended claims.

[0151] It should also be noted that the term "comprising", "including" or any other variant thereof is intended to cover non-exclusive inclusion, so that a commodity or system including a series of elements not only includes those elements, but also includes other elements not explicitly listed, or further includes elements inherent to such commodity or system. Without more limitations, an element defined by the statement "including one..." does not exclude the existence of another identical element in the commodity or system including the said element.

[0152] It should be understood that the term "and / or" used herein is only a description of the association relationship of associated objects, indicating that three relationships may exist. For example, A and / or B may represent: A exists alone, A and B exist simultaneously, and B exists alone. In addition, the character " / " herein generally represents an "or" relationship between the associated objects before and after.

[0153] The foregoing description illustrates and describes several preferred embodiments of the present application. However, as previously mentioned, it should be understood that the present application is not limited to the forms disclosed herein, should not be construed as excluding other embodiments, but can be used in various other combinations, modifications, and environments, and can be altered within the scope of the inventive concept of the application described herein through the above teachings or the techniques or knowledge in the relevant field. Any changes and modifications made by those skilled in the art without departing from the spirit and scope of the present application shall fall within the protection scope of the appended claims of the present application.

Claims

1. A method for obtaining the direct reduction degree and indirect reduction degree of blast furnace ironmaking, characterized in that, The acquisition method includes the following steps: S1: Collect the gas parameters of the blast furnace top and the gas parameters of the blast furnace tuyere blowing; S2: Calculate and obtain the blast furnace top gas volume V based on the gas parameters of the blast furnace top in S1 and the gas parameters of the blast furnace tuyere blowing 炉顶煤气量 , the carbon mass m of the gas in the blast furnace top 炉顶煤气C and the carbon mass m gasified in front of the blast furnace tuyere 风口气化C ; S3: Calculate the mass of carbon for direct reduction \(m_{d}\) of the blast furnace through the gas parameters at the blast furnace top in S1, the gas parameters of the blast furnace tuyere blowing, the blast furnace top gas volume \(V\) in S2, the carbon mass \(m_{c}\) of the gas in the blast furnace top, and the carbon mass \(m_{v}\) gasified in front of the blast furnace tuyere. 炉顶煤气量 and the carbon mass \(m_{c}\) of the gas in the blast furnace top 炉顶煤气C and the carbon mass \(m_{v}\) gasified in front of the blast furnace tuyere 风口气化C to obtain the mass of carbon for direct reduction \(m_{d}\) of the blast furnace. 直接还原C ; S4: Calculate the carbon mass m 炉顶煤气量 for indirect reduction in the blast furnace by using the gas parameters at the blast furnace top and the gas parameters of the blast furnace tuyere in S1 and the blast furnace top gas volume V 炉顶煤气C , the carbon mass m 风口气化C of the gas in the blast furnace top and the carbon mass m 间接还原C gasified in front of the blast furnace tuyere; S5: Calculate the mass of carbon m for direct reduction in the blast furnace in S3 直接还原C and the mass of carbon m for indirect reduction in the blast furnace in S4 间接还原C to obtain the direct reduction degree r of the blast furnace d ; S6: Calculate the indirect reduction degree r of the blast furnace by the mass m of carbon for direct reduction in the blast furnace in S3 直接还原C and the mass m of carbon for indirect reduction in the blast furnace in S4 间接还原C ; i ; The gas parameters at the blast furnace top in S1 include the volume V (m 3 ) of the cold blast air for the blast furnace, the volume fraction of nitrogen in the top gas of the blast furnace , the volume fraction of carbon monoxide in the top gas of the blast furnace , and the volume fraction of carbon dioxide in the top gas of the blast furnace The gas parameters of the blast furnace air include the volume V of oxygen O2 (m 3 ) of the oxygen-enriched blast furnace air, the volume fraction of nitrogen in the blast volume of the blast furnace , and the volume fraction of oxygen in the blast volume of the blast furnace The method for obtaining the direct reduction degree r in the blast furnace ironmaking process related to S5 d is as follows: The method for obtaining the indirect reduction degree r in the blast furnace ironmaking process involved in S6 i is as follows:

2. The acquisition method according to claim 1, wherein The specific content of S2 includes: S21: Calculate the blast furnace top gas volume, and the acquisition method is as follows: S22: Calculate the carbon mass in the blast furnace top gas, and the acquisition method is: where V m is the molar volume of gas, 0.0224 m 3 ·mol -1 ; M C is the molar mass of carbon atoms, 12 g·mol -1 ; S23: Calculate the carbon mass gasified in front of the blast furnace tuyere, and the acquisition method is: Among them, V m is the molar volume of gas, 0.0224 m 3 ·mol -1 ; M C is the molar mass of carbon atoms, 12 g·mol -1 .

3. The obtaining method according to claim 1, wherein The acquisition method of the carbon mass directly reduced in the blast furnace ironmaking process involved in S3 is: Among which V m is the molar volume of gas, 0.0224 m 3 ·mol -1 ; M C is the molar mass of carbon atoms, 12 g·mol -1 .

4. The acquisition method according to claim 2, wherein The acquisition method of the carbon mass indirectly reduced in the blast furnace ironmaking process involved in S4 is: Among them, V m is the molar volume of gas, 0.0224 m 3 ·mol -1 ; M C is the molar mass of carbon atoms, 12 g·mol -1 .

5. The acquisition method according to claim 1, wherein The direct reduction degree and the indirect reduction degree calculated in S5 and S6 are the average values within a period of time or the instantaneous values at different moments during the blast furnace smelting process.

6. A system for obtaining the direct reduction degree and the indirect reduction degree in blast furnace ironmaking, which obtains the direct reduction degree and the indirect reduction degree by the obtaining method described in any one of the above claims 1-5, characterized in that The acquisition system includes: A data acquisition module, which is used to collect the gas parameters of the blast furnace top and the gas parameters of the blast furnace tuyere blowing; A calculation module, which is used to calculate the blast furnace top gas volume V from the data collected by the data acquisition module 炉顶煤气量 , the carbon mass m of the gas in the blast furnace top 炉顶煤气C and the carbon mass m gasified in front of the blast furnace tuyere 风口气化C , the carbon mass m directly reduced in the blast furnace 直接还原C , the carbon mass m indirectly reduced in the blast furnace 间接还原C , the direct reduction degree r of the blast furnace d and the indirect reduction degree r of the blast furnace i .

7. A non-volatile computer-readable storage medium storing a computer program, characterized in that, When the computer program is executed by one or more processors, the processor is caused to execute the acquisition method of the direct reduction degree and the indirect reduction degree of blast furnace ironmaking according to any one of claims 1 to 5.

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