An intelligent coal blending system and method

Abstract

This invention relates to the field of power engineering control technology, and in particular to an intelligent coal blending system and method. It includes: a coal type identification unit for identifying the type of coal supplied to the coal mill; wherein the supplied coal types include lignite, bituminous coal, and anthracite; a unit calculation unit for real-time acquisition of the calorific value K and sulfur content I of the coal; and an intelligent blending unit for real-time adjustment and control of the amount of bituminous coal in the coal mill's supplied coal types based on the calorific value K and the sulfur content I. This invention, through intelligent, automated, and real-time adjustment and control of the amount of bituminous coal in the blended coal, and by using the calorific value and sulfur content as parameters for adaptive correction, effectively improves the complete combustion of coal to achieve the required energy supply and reduces pollution generated by coal combustion.

Description

Technical Field

[0001] This invention relates to the field of power engineering control technology, and in particular to an intelligent coal blending system and method. Background Technology

[0002] In order to alleviate the tight fuel supply, improve the economic efficiency of unit operation, and reduce power generation costs, power plants have begun to burn two or more types of blended coal in a certain proportion. According to the current situation, it has been found that most power plants find it difficult to burn the designed coal type, and the phenomenon of blending various types of coal is quite common. In fact, the designed coal type of some power plants is blended coal.

[0003] Furthermore, due to market constraints, the arrival of coal at the plant is irregular and the forecast accuracy is low, resulting in chaotic coal stockpiling in coal yards. This makes it difficult to achieve refined coal management and is not conducive to coal blending and combustion, negatively impacting the safe and economical operation of boilers. Accurate coal blending is impossible. Moreover, with the influence of energy conservation and emission reduction, the requirements for controlling SO2 concentration in flue gas are also very strict, necessitating effective control of coal pollution. Therefore, how to provide an intelligent coal blending system and method is a technical problem that urgently needs to be solved by those skilled in the art. Summary of the Invention

[0004] The purpose of this invention is to provide an intelligent coal blending system and method. This invention intelligently, automatically and in real time adjusts and controls the amount of bituminous coal in the blended coal, and combines the calorific value and sulfur content of the coal as parameters for adaptive correction. This effectively improves the complete combustion of coal to meet the required energy supply and reduces the pollution generated by coal combustion.

[0005] To achieve the above objectives, the present invention provides the following technical solution:

[0006] An intelligent coal blending system, comprising:

[0007] A coal type identification unit is used to identify the type of coal supplied to the coal mill; wherein the type of coal supplied includes lignite, bituminous coal and anthracite;

[0008] The unit calculation unit is used to collect the calorific value K and sulfur content I of coal in real time, wherein the calorific value K and sulfur content I of coal are the calorific value and sulfur content of coal when burning the lignite, the bituminous coal and the anthracite;

[0009] The intelligent blending unit is used to adjust and control the amount of bituminous coal in the coal mill in real time according to the calorific value K and the sulfur content I of the coal.

[0010] In some embodiments of this application, the intelligent blending unit is configured with a preset coal calorific value matrix T0 and a preset bituminous coal increase matrix A. For the preset bituminous coal increase matrix A, A(A1,A2,A3,A4) is defined, where A1 is the first preset bituminous coal increase, A2 is the second preset bituminous coal increase, A3 is the third preset bituminous coal increase, and A4 is the fourth preset bituminous coal increase, and A1 < A2 < A3 < A4;

[0011] For the preset coal calorific value matrix T0, T0(T01,T02,T03,T04) is set, where T01 is the first preset coal calorific value, T02 is the second preset coal calorific value, T03 is the third preset coal calorific value, T04 is the fourth preset coal calorific value, and T01 < T02 < T03 < T04.

[0012] The intelligent blending unit is also used to select the corresponding bituminous coal increase amount based on the relationship between K and the preset coal calorific value matrix T0 as the real-time adjustment and control of the increase amount of bituminous coal in the coal type.

[0013] When K < T01, the fourth preset bituminous coal increase amount A4 is selected as the increase amount of bituminous coal in the coal type to be adjusted and controlled in real time;

[0014] When T01≤K<T02, the third preset bituminous coal increase amount A3 is selected as the increase amount of bituminous coal in the coal type to be adjusted and controlled in real time;

[0015] When T02≤K<T03, the second preset bituminous coal increase amount A2 is selected as the increase amount of bituminous coal in the incoming coal type for real-time adjustment and control;

[0016] When T03≤K<T04, the first preset bituminous coal increase amount A1 is selected as the increase amount of bituminous coal in the coal type to be adjusted and controlled in real time.

[0017] In some embodiments of this application, the intelligent blending unit is further configured with a preset coal sulfur content matrix K0 and a preset bituminous coal increase correction coefficient matrix B. For the preset bituminous coal increase correction coefficient matrix B, B(B1,B2,B3,B4) is defined, where B1 is the first preset bituminous coal increase correction coefficient, B2 is the second preset bituminous coal increase correction coefficient, B3 is the third preset bituminous coal increase correction coefficient, and B4 is the fourth preset bituminous coal increase correction coefficient, and 0.8 < B1 < B2 < B3 < B4 < 1.2;

[0018] For the preset coal sulfur content matrix K0, K0(K01,K02,K03,K04) is set, where K01 is the first preset coal sulfur content, K02 is the second preset coal sulfur content, K03 is the third preset coal sulfur content, K04 is the fourth preset coal sulfur content, and K01 < K02 < K03 < K04.

[0019] The intelligent blending unit is also used to select the corresponding correction coefficient according to the relationship between I and the preset coal sulfur content matrix K0 to correct the increase of each preset bituminous coal.

[0020] When I < K01, the fourth preset bituminous coal increase correction coefficient B4 is selected to correct the fourth preset bituminous coal increase A4, and the corrected bituminous coal increase is A4*B4.

[0021] When K01≤I<K02, the third preset bituminous coal increase correction coefficient B3 is selected to correct the third preset bituminous coal increase A3, and the corrected bituminous coal increase is A3*B3;

[0022] When K02≤I<K03, select the second preset bituminous coal increase correction coefficient B2 to correct the second preset bituminous coal increase A2. The corrected bituminous coal increase is A2*B2.

[0023] When K03≤I<K04, the first preset bituminous coal increase correction coefficient B1 is selected to correct the first preset bituminous coal increase A1, and the corrected bituminous coal increase is A1*B1.

[0024] In some embodiments of this application, the unit calculation unit is also used to calculate the rate of increase V of the calorific value of coal in real time;

[0025] The intelligent blending unit is also used to adjust and control the amount of bituminous coal in the coal mill in real time according to the rate of increase V of the calorific value of the coal.

[0026] The intelligent blending unit also includes a preset coal calorific value increase rate matrix L0 and a preset bituminous coal increase amount secondary correction coefficient matrix C. For the preset bituminous coal increase amount secondary correction coefficient matrix C, C(C1, C2, C3, C4) is defined, where C1 is the first preset bituminous coal increase amount secondary correction coefficient, C2 is the second preset bituminous coal increase amount secondary correction coefficient, C3 is the third preset bituminous coal increase amount secondary correction coefficient, and C4 is the fourth preset bituminous coal increase amount secondary correction coefficient, and 1 < C1 < C2 < C3 < C4 < 1.5. For the preset coal calorific value increase rate matrix L0, L0(L01, L02, L03, L04) is defined, where L01 is the first preset coal calorific value increase rate, L02 is the second preset coal calorific value increase rate, L03 is the third preset coal calorific value increase rate, and L04 is the fourth preset coal calorific value increase rate, and L01 < L02 < L03 < L04.

[0027] The intelligent blending unit is also used to select the corresponding secondary correction coefficient according to the relationship between V and the preset coal calorific value increase rate matrix L0 to perform secondary correction on the corrected increase of each preset bituminous coal.

[0028] When V < L01, the fourth preset bituminous coal increase amount secondary correction coefficient C4 is selected to perform secondary correction on the corrected fourth preset bituminous coal increase amount A4, and the corrected bituminous coal increase amount is A4*B4*C4.

[0029] When L01≤V<L02, the third preset bituminous coal increase amount secondary correction coefficient C3 is selected to perform secondary correction on the corrected third preset bituminous coal increase amount A3, and the corrected bituminous coal increase amount is A3*B3*C3.

[0030] When L02≤V<L03, the second preset bituminous coal increase amount secondary correction coefficient C2 is selected to perform secondary correction on the corrected second preset bituminous coal increase amount A2. The corrected bituminous coal increase amount is A2*B2*C2.

[0031] When L03≤V<L04, the first preset bituminous coal increase amount secondary correction coefficient C1 is selected to perform secondary correction on the first preset bituminous coal increase amount A1, and the corrected bituminous coal increase amount is A1*B1*C1.

[0032] In some embodiments of this application, the intelligent blending unit is further configured to adjust and control the amount of bituminous coal in the coal mill in real time based on the absolute value of the difference n between the amount of bituminous coal and the amount of anthracite after secondary correction.

[0033] The intelligent blending unit is also equipped with a matrix Y0 representing the absolute value difference between the amounts of bituminous coal and anthracite, and a matrix F representing the reduction amount of bituminous coal. For the matrix F representing the reduction amount of bituminous coal, F(F1,F2,F3,F4) is defined, where F1 is the first preset reduction amount of bituminous coal, F2 is the second preset reduction amount of bituminous coal, F3 is the third preset reduction amount of bituminous coal, and F4 is the fourth preset reduction amount of bituminous coal, and 0 < F1 < F2 < F3 < F4.

[0034] For the absolute value matrix Y0 of the difference between the amount of bituminous coal and anthracite, Y0(Y01,Y02,Y03,Y04) is defined, where Y01 is the absolute value of the difference between the amount of bituminous coal and anthracite in the first preset, Y02 is the absolute value of the difference between the amount of bituminous coal and anthracite in the second preset, Y03 is the absolute value of the difference between the amount of bituminous coal and anthracite in the third preset, and Y04 is the absolute value of the difference between the amount of bituminous coal and anthracite in the fourth preset, and Y01 < Y02 < Y03 < Y04;

[0035] The intelligent blending unit is also used to select the corresponding amount of bituminous coal reduction based on the relationship between the absolute value of n and the absolute value matrix Y0 of the difference between the amount of bituminous coal and anthracite. This is used to adjust and control the amount of bituminous coal reduction in the coal type in real time.

[0036] When |n|<Y01, the first preset bituminous coal reduction amount F1 is selected as the reduction amount of bituminous coal in the coal type to be adjusted and controlled in real time, and the amount of bituminous coal after adjustment is A4*B4*C4-F1;

[0037] When Y01≤|n|<Y02, the second preset bituminous coal reduction amount F2 is selected as the reduction amount of bituminous coal in the coal type to be adjusted and controlled in real time, and the amount of bituminous coal after adjustment is A3*B3*C3-F2;

[0038] When Y02≤|n|<Y03, the third preset bituminous coal reduction amount F3 is selected as the reduction amount of bituminous coal in the coal type to be adjusted and controlled in real time, and the amount of bituminous coal after adjustment is A2*B2*C2-F3;

[0039] When Y03≤|n|<Y04, the fourth preset bituminous coal reduction amount F4 is selected as the reduction amount of bituminous coal in the incoming coal type for real-time adjustment control, and the adjusted amount of bituminous coal is A1*B1*C1-F4.

[0040] To achieve the above objectives, the present invention also provides an intelligent coal blending method, applied to the aforementioned intelligent coal blending system, comprising:

[0041] Identify the type of coal supplied to the coal mill; wherein the type of coal supplied includes lignite, bituminous coal and anthracite;

[0042] The calorific value K and sulfur content I of coal are collected in real time, wherein the calorific value K and the sulfur content I of coal are the calorific value and sulfur content of coal when burning the lignite, the bituminous coal and the anthracite;

[0043] The amount of bituminous coal in the coal mill is adjusted and controlled in real time according to the calorific value K and the sulfur content I of the coal.

[0044] In some embodiments of this application, a preset coal calorific value matrix T0 and a preset bituminous coal increase matrix A are preset. For the preset bituminous coal increase matrix A, A(A1,A2,A3,A4) is set, where A1 is the first preset bituminous coal increase, A2 is the second preset bituminous coal increase, A3 is the third preset bituminous coal increase, and A4 is the fourth preset bituminous coal increase, and A1 < A2 < A3 < A4;

[0045] For the preset coal calorific value matrix T0, T0(T01,T02,T03,T04) is set, where T01 is the first preset coal calorific value, T02 is the second preset coal calorific value, T03 is the third preset coal calorific value, T04 is the fourth preset coal calorific value, and T01 < T02 < T03 < T04.

[0046] Based on the relationship between K and the preset coal calorific value matrix T0, the corresponding increase in bituminous coal is selected as the increase in bituminous coal among the incoming coal types for real-time adjustment and control.

[0047] When K < T01, the fourth preset bituminous coal increase amount A4 is selected as the increase amount of bituminous coal in the coal type to be adjusted and controlled in real time;

[0048] When T01≤K<T02, the third preset bituminous coal increase amount A3 is selected as the increase amount of bituminous coal in the coal type to be adjusted and controlled in real time;

[0049] When T02≤K<T03, the second preset bituminous coal increase amount A2 is selected as the increase amount of bituminous coal in the incoming coal type for real-time adjustment and control;

[0050] When T03≤K<T04, the first preset bituminous coal increase amount A1 is selected as the increase amount of bituminous coal in the coal type to be adjusted and controlled in real time.

[0051] In some embodiments of this application, a preset sulfur content matrix K0 for coal and a preset bituminous coal increase correction coefficient matrix B are preset. For the preset bituminous coal increase correction coefficient matrix B, B(B1,B2,B3,B4) is set, where B1 is the first preset bituminous coal increase correction coefficient, B2 is the second preset bituminous coal increase correction coefficient, B3 is the third preset bituminous coal increase correction coefficient, and B4 is the fourth preset bituminous coal increase correction coefficient, and 0.8 < B1 < B2 < B3 < B4 < 1.2;

[0052] For the preset coal sulfur content matrix K0, K0(K01,K02,K03,K04) is set, where K01 is the first preset coal sulfur content, K02 is the second preset coal sulfur content, K03 is the third preset coal sulfur content, K04 is the fourth preset coal sulfur content, and K01 < K02 < K03 < K04.

[0053] Based on the relationship between I and the preset coal sulfur content matrix K0, a corresponding correction coefficient is selected to correct the increase in each preset bituminous coal.

[0054] When I < K01, the fourth preset bituminous coal increase correction coefficient B4 is selected to correct the fourth preset bituminous coal increase A4, and the corrected bituminous coal increase is A4*B4.

[0055] When K01≤I<K02, the third preset bituminous coal increase correction coefficient B3 is selected to correct the third preset bituminous coal increase A3, and the corrected bituminous coal increase is A3*B3;

[0056] When K02≤I<K03, select the second preset bituminous coal increase correction coefficient B2 to correct the second preset bituminous coal increase A2. The corrected bituminous coal increase is A2*B2.

[0057] When K03≤I<K04, the first preset bituminous coal increase correction coefficient B1 is selected to correct the first preset bituminous coal increase A1, and the corrected bituminous coal increase is A1*B1.

[0058] In some embodiments of this application, it also includes:

[0059] Real-time calculation of the rate of increase V of the calorific value of coal;

[0060] The amount of bituminous coal in the coal mill is adjusted and controlled in real time according to the rate of increase V of the calorific value of the coal.

[0061] A preset matrix L0 represents the rate of increase of the calorific value of coal, and a preset matrix C represents the secondary correction coefficient for the increase in bituminous coal. For the preset matrix C, C(C1, C2, C3, C4) is defined, where C1 is the first preset secondary correction coefficient for the increase in bituminous coal, C2 is the second preset secondary correction coefficient for the increase in bituminous coal, C3 is the third preset secondary correction coefficient for the increase in bituminous coal, and C4 is the fourth preset secondary correction coefficient for the increase in bituminous coal, with 1 < C1 < C2 < C3 < C4 < 1.5. For the preset matrix L0 represents the rate of increase of the calorific value of coal, L0(L01, L02, L03, L04) is defined, where L01 is the first preset rate of increase of the calorific value of coal, L02 is the second preset rate of increase of the calorific value of coal, L03 is the third preset rate of increase of the calorific value of coal, and L04 is the fourth preset rate of increase of the calorific value of coal, with L01 < L02 < L03 < L04.

[0062] Based on the relationship between V and the preset coal calorific value increase rate matrix L0, a corresponding secondary correction coefficient is selected to perform secondary correction on the corrected increase in each preset bituminous coal amount.

[0063] When V < L01, the fourth preset bituminous coal increase amount secondary correction coefficient C4 is selected to perform secondary correction on the corrected fourth preset bituminous coal increase amount A4, and the corrected bituminous coal increase amount is A4*B4*C4.

[0064] When L01≤V<L02, the third preset bituminous coal increase amount secondary correction coefficient C3 is selected to perform secondary correction on the corrected third preset bituminous coal increase amount A3, and the corrected bituminous coal increase amount is A3*B3*C3.

[0065] When L02≤V<L03, the second preset bituminous coal increase amount secondary correction coefficient C2 is selected to perform secondary correction on the corrected second preset bituminous coal increase amount A2. The corrected bituminous coal increase amount is A2*B2*C2.

[0066] When L03≤V<L04, the first preset bituminous coal increase amount secondary correction coefficient C1 is selected to perform secondary correction on the first preset bituminous coal increase amount A1, and the corrected bituminous coal increase amount is A1*B1*C1.

[0067] In some embodiments of this application, it also includes:

[0068] Based on the absolute value of the difference n between the amount of bituminous coal and the amount of anthracite after the second correction, the amount of bituminous coal in the coal mill is adjusted and controlled in real time.

[0069] A matrix Y0 representing the absolute value difference between the amounts of bituminous coal and anthracite is pre-set, and a matrix F representing the reduction amount of bituminous coal is pre-set. For the matrix F representing the reduction amount of bituminous coal, F(F1,F2,F3,F4) is set, where F1 is the first pre-set reduction amount of bituminous coal, F2 is the second pre-set reduction amount of bituminous coal, F3 is the third pre-set reduction amount of bituminous coal, and F4 is the fourth pre-set reduction amount of bituminous coal, and 0 < F1 < F2 < F3 < F4;

[0070] For the absolute value matrix Y0 of the difference between the amount of bituminous coal and anthracite, Y0(Y01,Y02,Y03,Y04) is defined, where Y01 is the absolute value of the difference between the amount of bituminous coal and anthracite in the first preset, Y02 is the absolute value of the difference between the amount of bituminous coal and anthracite in the second preset, Y03 is the absolute value of the difference between the amount of bituminous coal and anthracite in the third preset, and Y04 is the absolute value of the difference between the amount of bituminous coal and anthracite in the fourth preset, and Y01 < Y02 < Y03 < Y04;

[0071] Based on the relationship between the absolute value of n and the absolute value matrix Y0 of the difference between the amount of bituminous coal and anthracite, the corresponding bituminous coal reduction amount is selected as the reduction amount of bituminous coal in the coal type to be adjusted and controlled in real time.

[0072] When |n|<Y01, the first preset bituminous coal reduction amount F1 is selected as the reduction amount of bituminous coal in the coal type to be adjusted and controlled in real time, and the amount of bituminous coal after adjustment is A4*B4*C4-F1;

[0073] When Y01≤|n|<Y02, the second preset bituminous coal reduction amount F2 is selected as the reduction amount of bituminous coal in the coal type to be adjusted and controlled in real time, and the amount of bituminous coal after adjustment is A3*B3*C3-F2;

[0074] When Y02≤|n|<Y03, the third preset bituminous coal reduction amount F3 is selected as the reduction amount of bituminous coal in the coal type to be adjusted and controlled in real time, and the amount of bituminous coal after adjustment is A2*B2*C2-F3;

[0075] When Y03≤|n|<Y04, the fourth preset bituminous coal reduction amount F4 is selected as the reduction amount of bituminous coal in the incoming coal type for real-time adjustment control, and the adjusted amount of bituminous coal is A1*B1*C1-F4.

[0076] This invention provides an intelligent coal blending system and method, which has the following advantages compared with the prior art:

[0077] This invention identifies the type of coal supplied to the coal mill using a coal type identification unit, and combines this with the real-time calorific value and sulfur content of the coal collected by the unit's calculation unit. Through an intelligent blending unit, the amount of bituminous coal in the coal mill is adjusted and controlled in real time, effectively improving the complete combustion rate of the coal, achieving the purpose of continuous energy supply, and reducing the pollution generated by coal combustion. This invention has the advantages of accuracy, automation, and environmental protection. Attached Figure Description

[0078] Figure 1 This is a functional block diagram of the intelligent coal blending system in an embodiment of the present invention;

[0079] Figure 2 This is a flowchart of the intelligent coal blending method in an embodiment of the present invention. Detailed Implementation

[0080] The specific embodiments of the present invention will be described in further detail below with reference to the accompanying drawings and examples. The following examples are for illustrative purposes only and are not intended to limit the scope of the invention.

[0081] In the description of this application, it should be understood that the terms "center", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this application.

[0082] The terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this application, unless otherwise stated, "a plurality of" means two or more.

[0083] In the description of this application, it should be noted that, unless otherwise expressly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the communication between the inner sides of two components. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.

[0084] In existing technologies, most power plants find it difficult to burn the designed coal type and instead blend various types of coal. However, due to market constraints, the arrival of coal at the plant is irregular and the forecast accuracy is not high, resulting in the chaotic and disorganized stockpiling of coal in the coal yard. This makes it difficult to achieve refined coal management and is not conducive to coal blending and combustion, which has a negative impact on the safe and economical operation of the boiler. Furthermore, it can lead to problems such as incomplete combustion of fuel due to differences in volatile components and boiler slagging and increased pollutant emissions due to differences in fuel melting points.

[0085] Therefore, the present invention provides an intelligent coal blending system and method, which intelligently, automatically and in real time adjusts and controls the amount of bituminous coal in the blended coal, and makes adaptive corrections by combining the calorific value and sulfur content of the coal as parameters, which effectively improves the full combustion of coal to meet the required energy supply and reduces the pollution generated by coal combustion.

[0086] See Figure 1 As shown, the disclosed embodiments of the present invention provide an intelligent coal blending system, comprising:

[0087] The coal type identification unit is used to identify the type of coal coming into the coal mill; the types of coal coming into the mill include lignite, bituminous coal and anthracite.

[0088] The unit calculation unit is used to collect the calorific value K and sulfur content I of coal in real time. The calorific value K and sulfur content I of coal are the calorific value and sulfur content of coal for burning lignite, bituminous coal and anthracite, respectively.

[0089] The intelligent blending unit is used to adjust and control the amount of bituminous coal in the coal mill in real time based on the calorific value K and sulfur content I of the coal.

[0090] In one specific embodiment of this application, the intelligent blending unit is configured with a preset coal calorific value matrix T0 and a preset bituminous coal increase matrix A. For the preset bituminous coal increase matrix A, A(A1,A2,A3,A4) is defined, where A1 is the first preset bituminous coal increase, A2 is the second preset bituminous coal increase, A3 is the third preset bituminous coal increase, and A4 is the fourth preset bituminous coal increase, and A1 < A2 < A3 < A4;

[0091] For a preset coal calorific value matrix T0, set T0(T01,T02,T03,T04), where T01 is the first preset coal calorific value, T02 is the second preset coal calorific value, T03 is the third preset coal calorific value, T04 is the fourth preset coal calorific value, and T01 < T02 < T03 < T04.

[0092] The intelligent blending unit is also used to select the corresponding bituminous coal increase amount based on the relationship between K and the preset coal calorific value matrix T0 as the real-time adjustment and control of the increase amount of bituminous coal in the coal type.

[0093] When K < T01, the fourth preset bituminous coal increase amount A4 is selected as the increase amount of bituminous coal in the coal type for real-time adjustment control;

[0094] When T01≤K<T02, the third preset bituminous coal increase amount A3 is selected as the increase amount of bituminous coal in the coal type for real-time adjustment control;

[0095] When T02≤K<T03, the second preset bituminous coal increase amount A2 is selected as the increase amount of bituminous coal in the coal type for real-time adjustment control;

[0096] When T03≤K<T04, the first preset bituminous coal increase amount A1 is selected as the increase amount of bituminous coal in the coal type for real-time adjustment control.

[0097] In one specific embodiment of this application, the intelligent blending unit is further configured with a preset sulfur content matrix K0 for coal and a preset bituminous coal increase correction coefficient matrix B. For the preset bituminous coal increase correction coefficient matrix B, B(B1,B2,B3,B4) is set, where B1 is the first preset bituminous coal increase correction coefficient, B2 is the second preset bituminous coal increase correction coefficient, B3 is the third preset bituminous coal increase correction coefficient, and B4 is the fourth preset bituminous coal increase correction coefficient, and 0.8 < B1 < B2 < B3 < B4 < 1.2;

[0098] For the preset sulfur content matrix of coal, K0 is set as K0(K01,K02,K03,K04), where K01 is the first preset sulfur content of coal, K02 is the second preset sulfur content of coal, K03 is the third preset sulfur content of coal, K04 is the fourth preset sulfur content of coal, and K01 < K02 < K03 < K04.

[0099] The intelligent blending unit is also used to select the corresponding correction coefficient based on the relationship between I and the preset sulfur content matrix K0 of the coal to correct the increase of each preset bituminous coal.

[0100] When I < K01, the fourth preset bituminous coal increase correction coefficient B4 is selected to correct the fourth preset bituminous coal increase A4. The corrected bituminous coal increase is A4*B4.

[0101] When K01≤I<K02, select the third preset bituminous coal increase correction coefficient B3 to correct the third preset bituminous coal increase A3. The corrected bituminous coal increase is A3*B3.

[0102] When K02≤I<K03, select the second preset bituminous coal increase correction coefficient B2 to correct the second preset bituminous coal increase A2. The corrected bituminous coal increase is A2*B2.

[0103] When K03≤I<K04, the first preset bituminous coal increase correction coefficient B1 is selected to correct the first preset bituminous coal increase A1. The corrected bituminous coal increase is A1*B1.

[0104] In one specific embodiment of this application, the unit calculation unit is also used to calculate the rate of increase V of the calorific value of coal in real time;

[0105] The intelligent blending unit is also used to adjust the amount of bituminous coal in the coal mill in real time according to the rate of increase V of the calorific value of the coal.

[0106] The intelligent blending unit also includes a preset coal calorific value increase rate matrix L0 and a preset bituminous coal increase amount secondary correction coefficient matrix C. For the preset bituminous coal increase amount secondary correction coefficient matrix C, C(C1,C2,C3,C4) is set, where C1 is the first preset bituminous coal increase amount secondary correction coefficient, C2 is the second preset bituminous coal increase amount secondary correction coefficient, C3 is the third preset bituminous coal increase amount secondary correction coefficient, and C4 is the fourth preset bituminous coal increase amount secondary correction coefficient, and 1 < C1 < C2 < C3 < C4 < 1.5; for the preset coal calorific value increase rate matrix L0, L0(L01,L02,L03,L04) is set, where L01 is the first preset coal calorific value increase rate, L02 is the second preset coal calorific value increase rate, L03 is the third preset coal calorific value increase rate, and L04 is the fourth preset coal calorific value increase rate, and L01 < L02 < L03 < L04;

[0107] The intelligent blending unit is also used to select the corresponding secondary correction coefficient based on the relationship between V and the preset coal calorific value increase rate matrix L0, so as to perform secondary correction on the increased amount of each preset bituminous coal after correction.

[0108] When V < L01, the fourth preset bituminous coal increase amount secondary correction coefficient C4 is selected to perform secondary correction on the corrected fourth preset bituminous coal increase amount A4. The corrected bituminous coal increase amount is A4*B4*C4.

[0109] When L01≤V<L02, select the third preset bituminous coal increase amount secondary correction coefficient C3 to perform secondary correction on the corrected third preset bituminous coal increase amount A3, and the corrected bituminous coal increase amount is A3*B3*C3.

[0110] When L02≤V<L03, the second preset bituminous coal increase amount secondary correction coefficient C2 is selected to perform secondary correction on the corrected second preset bituminous coal increase amount A2. The corrected bituminous coal increase amount is A2*B2*C2.

[0111] When L03≤V<L04, the second correction coefficient C1 of the first preset bituminous coal increase is selected to perform a second correction on the first preset bituminous coal increase A1. The corrected bituminous coal increase is A1*B1*C1.

[0112] In one specific embodiment of this application, the intelligent blending unit is further used to adjust the amount of bituminous coal in the coal mill in real time based on the absolute value of the difference n between the amount of bituminous coal and the amount of anthracite after secondary correction.

[0113] The intelligent blending unit also has a preset absolute value matrix Y0 of the difference between the amount of bituminous coal and anthracite and a preset bituminous coal reduction matrix F. For the preset bituminous coal reduction matrix F, F(F1,F2,F3,F4) is set, where F1 is the first preset bituminous coal reduction, F2 is the second preset bituminous coal reduction, F3 is the third preset bituminous coal reduction, and F4 is the fourth preset bituminous coal reduction, and 0 < F1 < F2 < F3 < F4;

[0114] For the matrix Y0 of the absolute value difference between the quantities of bituminous coal and anthracite, Y0(Y01,Y02,Y03,Y04) is defined, where Y01 is the absolute value difference between the quantities of the first preset bituminous coal and anthracite, Y02 is the absolute value difference between the quantities of the second preset bituminous coal and anthracite, Y03 is the absolute value difference between the quantities of the third preset bituminous coal and anthracite, and Y04 is the absolute value difference between the quantities of the fourth preset bituminous coal and anthracite, and Y01 < Y02 < Y03 < Y04;

[0115] The intelligent blending unit is also used to select the corresponding amount of bituminous coal reduction as the amount of bituminous coal reduction in real time by adjusting and controlling the amount of bituminous coal in the coal type based on the relationship between the absolute value of n and the absolute value matrix Y0 of the difference between the amount of bituminous coal and the amount of anthracite.

[0116] When |n|<Y01, the first preset bituminous coal reduction amount F1 is selected as the reduction amount of bituminous coal in the coal type for real-time adjustment control. The amount of bituminous coal after adjustment is A4*B4*C4-F1.

[0117] When Y01≤|n|<Y02, the second preset bituminous coal reduction amount F2 is selected as the reduction amount of bituminous coal in the coal type to be adjusted and controlled in real time. The amount of bituminous coal after adjustment is A3*B3*C3-F2.

[0118] When Y02≤|n|<Y03, the third preset bituminous coal reduction amount F3 is selected as the reduction amount of bituminous coal in the coal type to be adjusted and controlled in real time. The amount of bituminous coal after adjustment is A2*B2*C2-F3.

[0119] When Y03≤|n|<Y04, the fourth preset bituminous coal reduction amount F4 is selected as the reduction amount of bituminous coal in the coal type for real-time adjustment control. The adjusted amount of bituminous coal is A1*B1*C1-F4.

[0120] Based on the same technical concept, see [reference] Figure 2 As shown, the present invention also provides an intelligent coal blending method, applied to an intelligent coal blending system, comprising:

[0121] Identify the types of coal supplied to the coal mill; these include lignite, bituminous coal, and anthracite.

[0122] The calorific value K and sulfur content I of coal are collected in real time. The calorific value K and sulfur content I of coal are the calorific value and sulfur content of coal when burning lignite, bituminous coal and anthracite, respectively.

[0123] The amount of bituminous coal supplied to the coal mill is adjusted in real time based on the calorific value K and sulfur content I of the coal.

[0124] In one specific embodiment of this application, a preset coal calorific value matrix T0 and a preset bituminous coal increase matrix A are preset. For the preset bituminous coal increase matrix A, A(A1,A2,A3,A4) is set, where A1 is the first preset bituminous coal increase, A2 is the second preset bituminous coal increase, A3 is the third preset bituminous coal increase, and A4 is the fourth preset bituminous coal increase, and A1 < A2 < A3 < A4;

[0125] For a preset coal calorific value matrix T0, set T0(T01,T02,T03,T04), where T01 is the first preset coal calorific value, T02 is the second preset coal calorific value, T03 is the third preset coal calorific value, T04 is the fourth preset coal calorific value, and T01 < T02 < T03 < T04.

[0126] Based on the relationship between K and the preset coal calorific value matrix T0, the corresponding increase in bituminous coal is selected as the increase in bituminous coal in the coal type for real-time adjustment control.

[0127] When K < T01, the fourth preset bituminous coal increase amount A4 is selected as the increase amount of bituminous coal in the coal type for real-time adjustment control;

[0128] When T01≤K<T02, the third preset bituminous coal increase amount A3 is selected as the increase amount of bituminous coal in the coal type for real-time adjustment control;

[0129] When T02≤K<T03, the second preset bituminous coal increase amount A2 is selected as the increase amount of bituminous coal in the coal type for real-time adjustment control;

[0130] When T03≤K<T04, the first preset bituminous coal increase amount A1 is selected as the increase amount of bituminous coal in the coal type for real-time adjustment control.

[0131] In one specific embodiment of this application, a preset sulfur content matrix K0 for coal and a preset bituminous coal increase correction coefficient matrix B are preset. For the preset bituminous coal increase correction coefficient matrix B, B(B1,B2,B3,B4) is set, where B1 is the first preset bituminous coal increase correction coefficient, B2 is the second preset bituminous coal increase correction coefficient, B3 is the third preset bituminous coal increase correction coefficient, and B4 is the fourth preset bituminous coal increase correction coefficient, and 0.8 < B1 < B2 < B3 < B4 < 1.2;

[0132] For the preset sulfur content matrix of coal, K0 is set as K0(K01,K02,K03,K04), where K01 is the first preset sulfur content of coal, K02 is the second preset sulfur content of coal, K03 is the third preset sulfur content of coal, K04 is the fourth preset sulfur content of coal, and K01 < K02 < K03 < K04.

[0133] Based on the relationship between I and the preset sulfur content matrix K0 of coal, the corresponding correction coefficient is selected to correct the increase of each preset bituminous coal.

[0134] When I < K01, the fourth preset bituminous coal increase correction coefficient B4 is selected to correct the fourth preset bituminous coal increase A4. The corrected bituminous coal increase is A4*B4.

[0135] When K01≤I<K02, select the third preset bituminous coal increase correction coefficient B3 to correct the third preset bituminous coal increase A3. The corrected bituminous coal increase is A3*B3.

[0136] When K02≤I<K03, select the second preset bituminous coal increase correction coefficient B2 to correct the second preset bituminous coal increase A2. The corrected bituminous coal increase is A2*B2.

[0137] When K03≤I<K04, the first preset bituminous coal increase correction coefficient B1 is selected to correct the first preset bituminous coal increase A1. The corrected bituminous coal increase is A1*B1.

[0138] In one specific embodiment of this application, it further includes:

[0139] Real-time calculation of the rate of increase V of the calorific value of coal;

[0140] The amount of bituminous coal in the coal mill is adjusted in real time according to the rate of increase V of the calorific value of the coal.

[0141] A preset matrix L0 represents the rate of increase of the calorific value of coal, and a preset matrix C represents the secondary correction coefficient for the increase in bituminous coal. For the secondary correction coefficient matrix C, C(C1, C2, C3, C4) is defined, where C1 is the first preset secondary correction coefficient for the increase in bituminous coal, C2 is the second preset secondary correction coefficient for the increase in bituminous coal, C3 is the third preset secondary correction coefficient for the increase in bituminous coal, and C4 is the fourth preset secondary correction coefficient for the increase in bituminous coal, and 1 < C1 < C2 < C3 < C4 < 1.5. For the preset matrix L0 represents the rate of increase of the calorific value of coal, L0(L01, L02, L03, L04) is defined, where L01 is the first preset rate of increase of the calorific value of coal, L02 is the second preset rate of increase of the calorific value of coal, L03 is the third preset rate of increase of the calorific value of coal, and L04 is the fourth preset rate of increase of the calorific value of coal, and L01 < L02 < L03 < L04.

[0142] Based on the relationship between V and the preset coal calorific value increase rate matrix L0, the corresponding secondary correction coefficient is selected to perform secondary correction on the preset bituminous coal increase after correction.

[0143] When V < L01, the fourth preset bituminous coal increase amount secondary correction coefficient C4 is selected to perform secondary correction on the corrected fourth preset bituminous coal increase amount A4. The corrected bituminous coal increase amount is A4*B4*C4.

[0144] When L01≤V<L02, select the third preset bituminous coal increase amount secondary correction coefficient C3 to perform secondary correction on the corrected third preset bituminous coal increase amount A3, and the corrected bituminous coal increase amount is A3*B3*C3.

[0145] When L02≤V<L03, the second preset bituminous coal increase amount secondary correction coefficient C2 is selected to perform secondary correction on the corrected second preset bituminous coal increase amount A2. The corrected bituminous coal increase amount is A2*B2*C2.

[0146] When L03≤V<L04, the second correction coefficient C1 of the first preset bituminous coal increase is selected to perform a second correction on the first preset bituminous coal increase A1. The corrected bituminous coal increase is A1*B1*C1.

[0147] In one specific embodiment of this application, it further includes:

[0148] Based on the absolute value of the difference n between the amount of bituminous coal and the amount of anthracite after the second correction, the amount of bituminous coal in the coal mill is adjusted in real time.

[0149] A matrix Y0 representing the absolute value difference between the amounts of bituminous coal and anthracite is pre-defined, along with a matrix F representing the reduction in bituminous coal amount. For the matrix F representing the reduction in bituminous coal amount, F(F1, F2, F3, F4) is defined, where F1 is the first pre-defined reduction in bituminous coal amount, F2 is the second pre-defined reduction in bituminous coal amount, F3 is the third pre-defined reduction in bituminous coal amount, and F4 is the fourth pre-defined reduction in bituminous coal amount, and 0 < F1 < F2 < F3 < F4.

[0150] For the matrix Y0 of the absolute value difference between the quantities of bituminous coal and anthracite, Y0(Y01,Y02,Y03,Y04) is defined, where Y01 is the absolute value difference between the quantities of the first preset bituminous coal and anthracite, Y02 is the absolute value difference between the quantities of the second preset bituminous coal and anthracite, Y03 is the absolute value difference between the quantities of the third preset bituminous coal and anthracite, and Y04 is the absolute value difference between the quantities of the fourth preset bituminous coal and anthracite, and Y01 < Y02 < Y03 < Y04;

[0151] Based on the relationship between the absolute value of n and the absolute value matrix Y0 of the difference between the amount of bituminous coal and anthracite, the corresponding amount of bituminous coal reduction is selected as the amount of bituminous coal reduction in the coal type for real-time adjustment control.

[0152] When |n|<Y01, the first preset bituminous coal reduction amount F1 is selected as the reduction amount of bituminous coal in the coal type for real-time adjustment control. The amount of bituminous coal after adjustment is A4*B4*C4-F1.

[0153] When Y01≤|n|<Y02, the second preset bituminous coal reduction amount F2 is selected as the reduction amount of bituminous coal in the coal type to be adjusted and controlled in real time. The amount of bituminous coal after adjustment is A3*B3*C3-F2.

[0154] When Y02≤|n|<Y03, the third preset bituminous coal reduction amount F3 is selected as the reduction amount of bituminous coal in the coal type to be adjusted and controlled in real time. The amount of bituminous coal after adjustment is A2*B2*C2-F3.

[0155] When Y03≤|n|<Y04, the fourth preset bituminous coal reduction amount F4 is selected as the reduction amount of bituminous coal in the coal type for real-time adjustment control. The adjusted amount of bituminous coal is A1*B1*C1-F4.

[0156] In summary, this invention identifies the type of coal supplied to the coal mill using a coal type identification unit, and combines this with the real-time calorific value and sulfur content of the coal collected by the unit's calculation unit. Through an intelligent blending unit, the amount of bituminous coal in the coal mill is adjusted and controlled in real time, effectively improving the complete combustion rate of the coal, achieving the goal of continuous energy supply, and reducing pollution generated by coal combustion. This invention has the advantages of accuracy, automation, and environmental friendliness.

[0157] The above description is merely one embodiment of the present invention, but it cannot be used to limit the scope of the present invention. Any structural changes made based on the present invention, as long as they do not lose the essence of the present invention, should be considered to fall within the protection scope of the present invention and be subject to its restrictions.

[0158] Those skilled in the art will understand that, for the sake of convenience and brevity, the specific working process and related descriptions of the system described above can be found in the corresponding processes in the foregoing method embodiments, and will not be repeated here.

[0159] It should be noted that the system provided in the above embodiments is only illustrated by the division of the above functional modules. In practical applications, the above functions can be assigned to different functional modules as needed, that is, the modules or steps in the embodiments of the present invention can be further decomposed or combined. For example, the modules in the above embodiments can be merged into one module, or further divided into multiple sub-modules to complete all or part of the functions described above. The names of the modules and steps involved in the embodiments of the present invention are only for distinguishing the various modules or steps and are not considered as an improper limitation of the present invention.

[0160] Those skilled in the art will recognize that the modules and method steps of the various examples described in conjunction with the embodiments disclosed herein can be implemented in electronic hardware, computer software, or a combination of both. The programs corresponding to the software modules and method steps can be placed in random access memory (RAM), main memory, read-only memory (ROM), electrically programmable ROM, electrically erasable programmable ROM, registers, hard disks, removable disks, CD-ROMs, or any other form of storage medium known in the art. To clearly illustrate the interchangeability of electronic hardware and software, the components and steps of the various examples have been generally described in terms of functionality in the foregoing description. Whether these functions are implemented in electronic hardware or software depends on the specific application and design constraints of the technical solution. Those skilled in the art can use different methods to implement the described functions for each specific application, but such implementation should not be considered beyond the scope of the invention.

[0161] The term "comprising" or any other similar term is intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus / device that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent in such process, method, article, or apparatus / device.

[0162] The technical solution of the present invention has been described above with reference to the preferred embodiments shown in the accompanying drawings. However, it will be readily understood by those skilled in the art that the scope of protection of the present invention is obviously not limited to these specific embodiments. Without departing from the principles of the present invention, those skilled in the art can make equivalent changes or substitutions to the relevant technical features, and the technical solutions after such changes or substitutions will all fall within the scope of protection of the present invention.

[0163] The above description is merely a preferred embodiment of the present invention and is not intended to limit the scope of protection of the present invention.

Claims

1. An intelligent coal blending system, characterized in that, include: A coal type identification unit is used to identify the type of coal supplied to the coal mill; wherein the type of coal supplied includes lignite, bituminous coal and anthracite; The unit calculation unit is used to collect the calorific value K and sulfur content I of coal in real time, wherein the calorific value K and sulfur content I of coal are the calorific value and sulfur content of coal when burning the lignite, the bituminous coal and the anthracite; The intelligent blending unit is used to adjust and control the amount of bituminous coal in the coal mill in real time according to the calorific value K and the sulfur content I of the coal. The intelligent blending unit is equipped with a preset coal calorific value matrix T0 and a preset bituminous coal increase matrix A. For the preset bituminous coal increase matrix A, A(A1,A2,A3,A4) is set, where A1 is the first preset bituminous coal increase, A2 is the second preset bituminous coal increase, A3 is the third preset bituminous coal increase, and A4 is the fourth preset bituminous coal increase, and A1 < A2 < A3 < A4. For the preset coal calorific value matrix T0, T0(T01,T02,T03,T04) is set, where T01 is the first preset coal calorific value, T02 is the second preset coal calorific value, T03 is the third preset coal calorific value, T04 is the fourth preset coal calorific value, and T01 < T02 < T03 < T04. The intelligent blending unit is also used to select the corresponding bituminous coal increase amount based on the relationship between K and the preset coal calorific value matrix T0 as the real-time adjustment and control of the increase amount of bituminous coal in the coal type. When K < T01, the fourth preset bituminous coal increase amount A4 is selected as the increase amount of bituminous coal in the coal type to be adjusted and controlled in real time; When T01≤K<T02, the third preset bituminous coal increase amount A3 is selected as the increase amount of bituminous coal in the coal type to be adjusted and controlled in real time; When T02≤K<T03, the second preset bituminous coal increase amount A2 is selected as the increase amount of bituminous coal in the coal type to be adjusted and controlled in real time; When T03≤K<T04, the first preset bituminous coal increase amount A1 is selected as the increase amount of bituminous coal in the coal type to be adjusted and controlled in real time.

2. The intelligent coal blending system according to claim 1, characterized in that, The intelligent blending unit is also equipped with a preset sulfur content matrix K0 for coal and a preset bituminous coal increase correction coefficient matrix B. For the preset bituminous coal increase correction coefficient matrix B, B(B1,B2,B3,B4) is set, where B1 is the first preset bituminous coal increase correction coefficient, B2 is the second preset bituminous coal increase correction coefficient, B3 is the third preset bituminous coal increase correction coefficient, and B4 is the fourth preset bituminous coal increase correction coefficient, and 0.8 < B1 < B2 < B3 < B4 < 1.2; For the preset coal sulfur content matrix K0, K0(K01,K02,K03,K04) is set, where K01 is the first preset coal sulfur content, K02 is the second preset coal sulfur content, K03 is the third preset coal sulfur content, K04 is the fourth preset coal sulfur content, and K01 < K02 < K03 < K04. The intelligent blending unit is also used to select the corresponding correction coefficient according to the relationship between I and the preset coal sulfur content matrix K0 to correct the increase of each preset bituminous coal. When I < K01, the fourth preset bituminous coal increase correction coefficient B4 is selected to correct the fourth preset bituminous coal increase A4, and the corrected bituminous coal increase is A4*B4. When K01≤I<K02, the third preset bituminous coal increase correction coefficient B3 is selected to correct the third preset bituminous coal increase A3, and the corrected bituminous coal increase is A3*B3; When K02≤I<K03, select the second preset bituminous coal increase correction coefficient B2 to correct the second preset bituminous coal increase A2. The corrected bituminous coal increase is A2*B2. When K03≤I<K04, the first preset bituminous coal increase correction coefficient B1 is selected to correct the first preset bituminous coal increase A1, and the corrected bituminous coal increase is A1*B1.

3. The intelligent coal blending system according to claim 2, characterized in that, The unit's calculation unit is also used to calculate the rate of increase V of the calorific value of coal in real time. The intelligent blending unit is also used to adjust and control the amount of bituminous coal in the coal mill in real time according to the rate of increase V of the calorific value of the coal. The intelligent blending unit also includes a preset coal calorific value increase rate matrix L0 and a preset bituminous coal increase amount secondary correction coefficient matrix C. For the preset bituminous coal increase amount secondary correction coefficient matrix C, C(C1, C2, C3, C4) is defined, where C1 is the first preset bituminous coal increase amount secondary correction coefficient, C2 is the second preset bituminous coal increase amount secondary correction coefficient, C3 is the third preset bituminous coal increase amount secondary correction coefficient, and C4 is the fourth preset bituminous coal increase amount secondary correction coefficient, and 1 < C1 < C2 < C3 < C4 < 1.

5. For the preset coal calorific value increase rate matrix L0, L0(L01, L02, L03, L04) is defined, where L01 is the first preset coal calorific value increase rate, L02 is the second preset coal calorific value increase rate, L03 is the third preset coal calorific value increase rate, and L04 is the fourth preset coal calorific value increase rate, and L01 < L02 < L03 < L04. The intelligent blending unit is also used to select the corresponding secondary correction coefficient according to the relationship between V and the preset coal calorific value increase rate matrix L0 to perform secondary correction on the corrected increase of each preset bituminous coal. When V < L01, the fourth preset bituminous coal increase amount secondary correction coefficient C4 is selected to perform secondary correction on the corrected fourth preset bituminous coal increase amount A4, and the corrected bituminous coal increase amount is A4*B4*C4. When L01≤V<L02, the third preset bituminous coal increase amount secondary correction coefficient C3 is selected to perform secondary correction on the corrected third preset bituminous coal increase amount A3, and the corrected bituminous coal increase amount is A3*B3*C3. When L02≤V<L03, the second preset bituminous coal increase amount secondary correction coefficient C2 is selected to perform secondary correction on the corrected second preset bituminous coal increase amount A2. The corrected bituminous coal increase amount is A2*B2*C2. When L03≤V<L04, the first preset bituminous coal increase amount secondary correction coefficient C1 is selected to perform secondary correction on the first preset bituminous coal increase amount A1, and the corrected bituminous coal increase amount is A1*B1*C1.

4. The intelligent coal blending system according to claim 3, characterized in that, The intelligent blending unit is also used to adjust and control the amount of bituminous coal in the coal mill in real time based on the absolute value of the difference n between the amount of bituminous coal and the amount of anthracite after secondary correction. The intelligent blending unit is also equipped with a matrix Y0 representing the absolute value difference between the amounts of bituminous coal and anthracite, and a matrix F representing the reduction amount of bituminous coal. For the matrix F representing the reduction amount of bituminous coal, F(F1,F2,F3,F4) is defined, where F1 is the first preset reduction amount of bituminous coal, F2 is the second preset reduction amount of bituminous coal, F3 is the third preset reduction amount of bituminous coal, and F4 is the fourth preset reduction amount of bituminous coal, and 0 < F1 < F2 < F3 < F4. For the absolute value matrix Y0 of the difference between the amount of bituminous coal and anthracite, Y0(Y01,Y02,Y03,Y04) is defined, where Y01 is the absolute value of the difference between the amount of bituminous coal and anthracite in the first preset, Y02 is the absolute value of the difference between the amount of bituminous coal and anthracite in the second preset, Y03 is the absolute value of the difference between the amount of bituminous coal and anthracite in the third preset, and Y04 is the absolute value of the difference between the amount of bituminous coal and anthracite in the fourth preset, and Y01 < Y02 < Y03 < Y04; The intelligent blending unit is also used to select the corresponding amount of bituminous coal reduction based on the relationship between the absolute value of n and the absolute value matrix Y0 of the difference between the amount of bituminous coal and anthracite. This is used to adjust and control the amount of bituminous coal reduction in the coal type in real time. When |n|<Y01, the first preset bituminous coal reduction amount F1 is selected as the reduction amount of bituminous coal in the coal type to be adjusted and controlled in real time, and the amount of bituminous coal after adjustment is A4*B4*C4-F1; When Y01≤|n|<Y02, the second preset bituminous coal reduction amount F2 is selected as the reduction amount of bituminous coal in the coal type to be adjusted and controlled in real time, and the amount of bituminous coal after adjustment is A3*B3*C3-F2; When Y02≤|n|<Y03, the third preset bituminous coal reduction amount F3 is selected as the reduction amount of bituminous coal in the coal type to be adjusted and controlled in real time, and the amount of bituminous coal after adjustment is A2*B2*C2-F3; When Y03≤|n|<Y04, the fourth preset bituminous coal reduction amount F4 is selected as the reduction amount of bituminous coal in the incoming coal type for real-time adjustment control, and the adjusted amount of bituminous coal is A1*B1*C1-F4.

5. An intelligent coal blending method, applied to the intelligent coal blending system as described in any one of claims 1-4, characterized in that, include: Identify the type of coal supplied to the coal mill; wherein the type of coal supplied includes lignite, bituminous coal and anthracite; The calorific value K and sulfur content I of coal are collected in real time, wherein the calorific value K and the sulfur content I of coal are the calorific value and sulfur content of coal when burning the lignite, the bituminous coal and the anthracite; The amount of bituminous coal in the coal mill is adjusted and controlled in real time according to the calorific value K and the sulfur content I of the coal.

6. The intelligent coal blending method according to claim 5, characterized in that, A preset coal calorific value matrix T0 and a preset bituminous coal increase matrix A are pre-set. For the preset bituminous coal increase matrix A, A(A1,A2,A3,A4) is set, where A1 is the first preset bituminous coal increase, A2 is the second preset bituminous coal increase, A3 is the third preset bituminous coal increase, and A4 is the fourth preset bituminous coal increase, and A1 < A2 < A3 < A4. For the preset coal calorific value matrix T0, T0(T01,T02,T03,T04) is set, where T01 is the first preset coal calorific value, T02 is the second preset coal calorific value, T03 is the third preset coal calorific value, T04 is the fourth preset coal calorific value, and T01 < T02 < T03 < T04. Based on the relationship between K and the preset coal calorific value matrix T0, the corresponding increase in bituminous coal is selected as the increase in bituminous coal among the incoming coal types for real-time adjustment and control. When K < T01, the fourth preset bituminous coal increase amount A4 is selected as the increase amount of bituminous coal in the coal type to be adjusted and controlled in real time; When T01≤K<T02, the third preset bituminous coal increase amount A3 is selected as the increase amount of bituminous coal in the coal type to be adjusted and controlled in real time; When T02≤K<T03, the second preset bituminous coal increase amount A2 is selected as the increase amount of bituminous coal in the coal type to be adjusted and controlled in real time; When T03≤K<T04, the first preset bituminous coal increase amount A1 is selected as the increase amount of bituminous coal in the coal type to be adjusted and controlled in real time.

7. The intelligent coal blending method according to claim 6, characterized in that, A preset sulfur content matrix K0 for coal and a preset correction coefficient matrix B for the increase in bituminous coal are pre-set. For the preset correction coefficient matrix B for the increase in bituminous coal, B(B1,B2,B3,B4) is set, where B1 is the first preset correction coefficient for the increase in bituminous coal, B2 is the second preset correction coefficient for the increase in bituminous coal, B3 is the third preset correction coefficient for the increase in bituminous coal, and B4 is the fourth preset correction coefficient for the increase in bituminous coal, and 0.8 < B1 < B2 < B3 < B4 < 1.2; For the preset coal sulfur content matrix K0, K0(K01,K02,K03,K04) is set, where K01 is the first preset coal sulfur content, K02 is the second preset coal sulfur content, K03 is the third preset coal sulfur content, K04 is the fourth preset coal sulfur content, and K01 < K02 < K03 < K04. Based on the relationship between I and the preset coal sulfur content matrix K0, a corresponding correction coefficient is selected to correct the increase in each preset bituminous coal. When I < K01, the fourth preset bituminous coal increase correction coefficient B4 is selected to correct the fourth preset bituminous coal increase A4, and the corrected bituminous coal increase is A4*B4. When K01≤I<K02, the third preset bituminous coal increase correction coefficient B3 is selected to correct the third preset bituminous coal increase A3, and the corrected bituminous coal increase is A3*B3; When K02≤I<K03, select the second preset bituminous coal increase correction coefficient B2 to correct the second preset bituminous coal increase A2. The corrected bituminous coal increase is A2*B2. When K03≤I<K04, the first preset bituminous coal increase correction coefficient B1 is selected to correct the first preset bituminous coal increase A1, and the corrected bituminous coal increase is A1*B1.

8. The intelligent coal blending method according to claim 7, characterized in that, Also includes: Real-time calculation of the rate of increase V of the calorific value of coal; The amount of bituminous coal in the coal mill is adjusted and controlled in real time according to the rate of increase V of the calorific value of the coal. A preset matrix L0 represents the rate of increase of the calorific value of coal, and a preset matrix C represents the secondary correction coefficient for the increase in bituminous coal. For the preset matrix C, C(C1, C2, C3, C4) is defined, where C1 is the first preset secondary correction coefficient for the increase in bituminous coal, C2 is the second preset secondary correction coefficient for the increase in bituminous coal, C3 is the third preset secondary correction coefficient for the increase in bituminous coal, and C4 is the fourth preset secondary correction coefficient for the increase in bituminous coal, with 1 < C1 < C2 < C3 < C4 < 1.

5. For the preset matrix L0 represents the rate of increase of the calorific value of coal, L0(L01, L02, L03, L04) is defined, where L01 is the first preset rate of increase of the calorific value of coal, L02 is the second preset rate of increase of the calorific value of coal, L03 is the third preset rate of increase of the calorific value of coal, and L04 is the fourth preset rate of increase of the calorific value of coal, with L01 < L02 < L03 < L04. Based on the relationship between V and the preset coal calorific value increase rate matrix L0, a corresponding secondary correction coefficient is selected to perform secondary correction on the corrected increase in each preset bituminous coal amount. When V < L01, the fourth preset bituminous coal increase amount secondary correction coefficient C4 is selected to perform secondary correction on the corrected fourth preset bituminous coal increase amount A4, and the corrected bituminous coal increase amount is A4*B4*C4. When L01≤V<L02, the third preset bituminous coal increase amount secondary correction coefficient C3 is selected to perform secondary correction on the corrected third preset bituminous coal increase amount A3, and the corrected bituminous coal increase amount is A3*B3*C3. When L02≤V<L03, the second preset bituminous coal increase amount secondary correction coefficient C2 is selected to perform secondary correction on the corrected second preset bituminous coal increase amount A2. The corrected bituminous coal increase amount is A2*B2*C2. When L03≤V<L04, the first preset bituminous coal increase amount secondary correction coefficient C1 is selected to perform secondary correction on the first preset bituminous coal increase amount A1, and the corrected bituminous coal increase amount is A1*B1*C1.

9. The intelligent coal blending method according to claim 8, characterized in that, Also includes: Based on the absolute value of the difference n between the amount of bituminous coal and the amount of anthracite after the second correction, the amount of bituminous coal in the coal mill is adjusted and controlled in real time. A matrix Y0 representing the absolute value difference between the amounts of bituminous coal and anthracite is pre-set, and a matrix F representing the reduction amount of bituminous coal is pre-set. For the matrix F representing the reduction amount of bituminous coal, F(F1,F2,F3,F4) is set, where F1 is the first pre-set reduction amount of bituminous coal, F2 is the second pre-set reduction amount of bituminous coal, F3 is the third pre-set reduction amount of bituminous coal, and F4 is the fourth pre-set reduction amount of bituminous coal, and 0 < F1 < F2 < F3 < F4; For the absolute value matrix Y0 of the difference between the amount of bituminous coal and anthracite, Y0(Y01,Y02,Y03,Y04) is defined, where Y01 is the absolute value of the difference between the amount of bituminous coal and anthracite in the first preset, Y02 is the absolute value of the difference between the amount of bituminous coal and anthracite in the second preset, Y03 is the absolute value of the difference between the amount of bituminous coal and anthracite in the third preset, and Y04 is the absolute value of the difference between the amount of bituminous coal and anthracite in the fourth preset, and Y01 < Y02 < Y03 < Y04; Based on the relationship between the absolute value of n and the absolute value matrix Y0 of the difference between the amount of bituminous coal and anthracite, the corresponding bituminous coal reduction amount is selected as the reduction amount of bituminous coal in the coal type to be adjusted and controlled in real time. When |n|<Y01, the first preset bituminous coal reduction amount F1 is selected as the reduction amount of bituminous coal in the coal type to be adjusted and controlled in real time, and the amount of bituminous coal after adjustment is A4*B4*C4-F1; When Y01≤|n|<Y02, the second preset bituminous coal reduction amount F2 is selected as the reduction amount of bituminous coal in the coal type to be adjusted and controlled in real time, and the amount of bituminous coal after adjustment is A3*B3*C3-F2; When Y02≤|n|<Y03, the third preset bituminous coal reduction amount F3 is selected as the reduction amount of bituminous coal in the coal type to be adjusted and controlled in real time, and the amount of bituminous coal after adjustment is A2*B2*C2-F3; When Y03≤|n|<Y04, the fourth preset bituminous coal reduction amount F4 is selected as the reduction amount of bituminous coal in the incoming coal type for real-time adjustment control, and the adjusted amount of bituminous coal is A1*B1*C1-F4.

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