Biomass blending combustion furnace and control method

Abstract

The invention is suitable for the technical field of energy optimization, and provides a combustion furnace for co-combustion of biomass and a control method.The combustion furnace comprises a biomass conveying unit, a collaborative combustion unit, an operation monitoring unit and a control unit, the biomass conveying unit is used for crushing biomass raw materials into to-be-combusted biomass with the preset size, and the collaborative combustion unit is used for controlling the to-be-combusted biomass with the preset size; the biomass conveying unit is used for conveying biomass to be combusted to the collaborative combustion unit, the collaborative combustion unit is used for conducting mixed combustion on the biomass to be combusted and pulverized coal, and the operation monitoring unit is used for monitoring operation parameters of the biomass conveying unit and the collaborative combustion unit. And the control unit is used for controlling the biomass conveying unit and / or the collaborative combustion unit according to the operation parameters.

Description

Technical Field

[0001] The present application belongs to the technical field of energy optimization, and in particular, relates to a biomass-blended combustion furnace and a control method. Background Art

[0002] Most power plants use pulverized coal boilers. Pulverized coal boilers have high combustion efficiency and heat conversion rate, and are highly adaptable. In addition, their fuel cost is low, and the initial investment is relatively low, making them suitable for large-scale electricity and industrial heat production. However, since coal resources are non-renewable energy, and in order to avoid environmental pollution, when using coal as an energy source, it is often necessary to optimize the coal, such as desulfurization and decarbonization, which results in a high cost when using coal as an energy source.

[0003] In the field of power generation, in order to control costs, pulverized coal boilers often use low-quality coal as fuel. These fuels usually contain high ash and sulfur contents. After combustion, they will produce a large amount of fly ash and sulfur dioxide, which will lead to excessive pollutant emission concentrations and have serious impacts on the environment. Summary of the invention

[0004] The embodiments of the present application provide a biomass-blended combustion furnace and a control method, which are aimed at the problem that the use of inferior coal in the power generation field in the prior art has a serious impact on the environment.

[0005] The embodiment of the present application provides a biomass-blended combustion furnace, comprising:

[0006] Biomass conveying unit, co-combustion unit, operation monitoring unit and control unit;

[0007] The biomass conveying unit is used to crush the biomass raw material into biomass to be burned of a preset size, and to convey the biomass to be burned to the coordinated combustion unit;

[0008] The coordinated combustion unit is used to mix and burn the biomass to be burned and coal powder;

[0009] The operation monitoring unit is used to monitor the operation parameters of the biomass conveying unit and the cooperative combustion unit, and send the operation parameters to the control unit. The control unit is used to control the biomass conveying unit and / or the cooperative combustion unit according to the operation parameters.

[0010] Optionally, the biomass conveying unit includes: a crusher, a storage bin, and a buffer bin; the crusher is used to crush the biomass raw materials into biomass to be burned of preset size, the output end of the crusher is connected to the feed port of the storage bin, the discharge port of the storage bin is connected to the feed port of the buffer bin through a primary spiral feeding pipe, and the feeding port of the buffer bin is connected to the synergistic combustion unit through a secondary spiral feeding pipe to transport the biomass to be burned to the synergistic combustion unit.

[0011] Optionally, an anti-blocking spiral ratchet feeder is provided at one end of the primary spiral feeding pipe close to the buffer bin.

[0012] Optionally, the collaborative combustion unit includes: a fluidized bed and a combustion furnace, wherein the fluidized bed is arranged at the bottom of the combustion furnace, and the furnace body of the combustion furnace is provided with a furnace front feed port, a primary air port, a secondary air port and a tertiary air port in sequence in a vertically upward direction, and the biomass conveying unit is connected to the furnace front feed port.

[0013] Optionally, the primary air inlet is used to transport air containing coal powder into the furnace body of the combustion furnace, wherein the mass flow ratio of coal powder to air is 0.4-0.5.

[0014] Optionally, the output power ratio of the combustion furnace and the fluidized bed is 7:3.

[0015] On the other hand, the present application provides a control method for a biomass-blended combustion furnace, which is applied to the biomass-blended combustion furnace as described above, comprising:

[0016] Acquiring operation parameters of the biomass-blended combustion furnace through an operation monitoring unit in the biomass-blended combustion furnace, and sending the operation parameters to a control unit in the biomass-blended combustion furnace, wherein the operation parameters include temperature data, load data, air volume data, and feed volume data;

[0017] Performing fuzzy processing on the operating parameters by the control unit to obtain a fuzzy data set;

[0018] The control unit matches the fuzzy data set with a preset fuzzy rule in a preset fuzzy rule base to obtain a preset fuzzy rule corresponding to the fuzzy data set, and uses the preset fuzzy rule corresponding to the fuzzy data set as a target rule;

[0019] By means of the control unit, the activation condition in the target rule is inferred according to the Sugeno inference method to obtain a fuzzy output value;

[0020] The control unit defuzzifies the fuzzy output value to obtain data to be adjusted, and the control unit generates a control instruction according to the data to be adjusted, wherein the control instruction is used to control the biomass conveying unit and / or the cooperative combustion unit.

[0021] Optionally, the step of performing defuzzification processing on the fuzzy output value by the control unit to obtain the data to be adjusted includes:

[0022] The control unit performs defuzzification processing on the fuzzy output value according to the weighted average method to obtain the data to be adjusted.

[0023] Compared with the prior art, the embodiments of the present application have the following beneficial effects: by co-firing biomass, the use of inferior coal in the power generation field is reduced, thereby reducing the impact of burning inferior coal on the environment. At the same time, by utilizing biomass, the waste of land resources is reduced. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0025] Figure 1 It is a structural schematic diagram of a biomass-blended combustion furnace provided by the present invention;

[0026] Figure 2 It is a schematic diagram of the biomass conveying process during operation of the biomass-blended combustion furnace provided by the present invention;

[0027] Figure 3 This is a flow chart of a control method of a biomass-blended combustion furnace provided by the present invention;

[0028] Among them, 10. Crusher, 11. Storage bin, 12. Primary spiral feeding pipe, 13. Anti-blocking spiral ratchet feeder, 14. Conveyor belt, 15. Buffer bin, 16. Secondary spiral feeding pipe, 17. Feeding port in front of furnace, 21. Furnace, 22. Reburning zone, 23. Fluidized bed, 24. Primary air inlet, 25. Secondary air inlet, 26. Tertiary air inlet, 27. Fluidizing air. DETAILED DESCRIPTION

[0029] In the following description, specific details such as specific system structures, technologies, etc. are provided for the purpose of illustration rather than limitation, so as to provide a thorough understanding of the embodiments of the present application. However, it should be clear to those skilled in the art that the present application may also be implemented in other embodiments without these specific details. In other cases, detailed descriptions of well-known systems, devices, circuits, and methods are omitted to prevent unnecessary details from obstructing the description of the present application.

[0030] It should be understood that when used in the present specification and the appended claims, the term "comprising" indicates the presence of described features, wholes, steps, operations, elements and / or components, but does not exclude the presence or addition of one or more other features, wholes, steps, operations, elements, components and / or combinations thereof.

[0031] It should also be understood that the term “and / or” used in the specification and appended claims refers to any and all possible combinations of one or more of the associated listed items, and includes these combinations.

[0032] As used in the specification and appended claims of this application, the term "if" can be interpreted as "when" or "uponce" or "in response to determining" or "in response to detecting", depending on the context. Similarly, the phrase "if it is determined" or "if [described condition or event] is detected" can be interpreted as meaning "uponce it is determined" or "in response to determining" or "uponce [described condition or event] is detected" or "in response to detecting [described condition or event]", depending on the context.

[0033] In addition, in the description of the present application specification and the appended claims, the terms "first", "second", "third", etc. are only used to distinguish the descriptions and cannot be understood as indicating or implying relative importance.

[0034] References to "one embodiment" or "some embodiments" etc. described in the specification of this application mean that one or more embodiments of the present application include specific features, structures or characteristics described in conjunction with the embodiment. Therefore, the statements "in one embodiment", "in some embodiments", "in some other embodiments", "in some other embodiments", etc. that appear in different places in this specification do not necessarily refer to the same embodiment, but mean "one or more but not all embodiments", unless otherwise specifically emphasized in other ways. The terms "including", "comprising", "having" and their variations all mean "including but not limited to", unless otherwise specifically emphasized in other ways.

[0035] In the following description, specific details such as specific system structures, technologies, etc. are provided for the purpose of illustration rather than limitation, so as to provide a thorough understanding of the embodiments of the present application. However, it should be clear to those skilled in the art that the present application may also be implemented in other embodiments without these specific details. In other cases, detailed descriptions of well-known systems, devices, circuits, and methods are omitted to prevent unnecessary details from obstructing the description of the present application.

[0036] It should be understood that when used in the present specification and the appended claims, the term "comprising" indicates the presence of described features, wholes, steps, operations, elements and / or components, but does not exclude the presence or addition of one or more other features, wholes, steps, operations, elements, components and / or combinations thereof.

[0037] It should also be understood that the term “and / or” used in the specification and appended claims refers to any and all possible combinations of one or more of the associated listed items, and includes these combinations.

[0038] As used in the specification and appended claims of this application, the term "if" can be interpreted as "when" or "uponce" or "in response to determining" or "in response to detecting" depending on the context. Similarly, the phrase "if it is determined" or "if [described condition or event] is detected" can be interpreted as meaning "uponce it is determined" or "in response to determining" or "uponce [described condition or event] is detected" or "in response to detecting [described condition or event]" depending on the context.

[0039] In addition, in the description of the present application specification and the appended claims, the terms "first", "second", "third", etc. are only used to distinguish the descriptions and cannot be understood as indicating or implying relative importance.

[0040] References to "one embodiment" or "some embodiments" etc. described in the specification of this application mean that one or more embodiments of the present application include specific features, structures or characteristics described in conjunction with the embodiment. Therefore, the statements "in one embodiment", "in some embodiments", "in some other embodiments", "in some other embodiments", etc. that appear in different places in this specification do not necessarily refer to the same embodiment, but mean "one or more but not all embodiments", unless otherwise specifically emphasized in other ways. The terms "including", "comprising", "having" and their variations all mean "including but not limited to", unless otherwise specifically emphasized in other ways.

[0041] The embodiment of the present application provides a biomass-blended combustion furnace, comprising:

[0042] Biomass conveying unit, co-combustion unit, operation monitoring unit and control unit;

[0043] The biomass conveying unit is used to crush the biomass raw material into biomass to be burned of a preset size, and to convey the biomass to be burned to the coordinated combustion unit;

[0044] The coordinated combustion unit is used to mix and burn the biomass to be burned and coal powder;

[0045] The operation monitoring unit is used to monitor the operation parameters of the biomass conveying unit and the cooperative combustion unit, and send the operation parameters to the control unit. The control unit is used to control the biomass conveying unit and / or the cooperative combustion unit according to the operation parameters.

[0046] By burning biomass, the use of low-quality coal in the power generation sector can be reduced, thereby reducing the impact of burning low-quality coal on the environment. At the same time, through the use of biomass, the waste of land resources can be reduced.

[0047] In a possible implementation, Figure 1-Figure 2 As shown, the biomass conveying unit includes: a crusher, a storage bin, and a buffer bin; the crusher is used to crush the biomass raw materials into biomass to be burned of preset sizes, the output end of the crusher is connected to the feed port of the storage bin, the discharge port of the storage bin is connected to the feed port of the buffer bin through a primary spiral feeding pipe, and the feeding port of the buffer bin is connected to the synergistic combustion unit through a secondary spiral feeding pipe to convey the biomass to be burned to the synergistic combustion unit.

[0048] In a possible implementation, an anti-blocking spiral ratchet feeder is provided at one end of the primary spiral feeding pipe close to the buffer bin.

[0049] Exemplarily, by adjusting the cutter and crushing chamber of the crusher, the crusher can be applied to a variety of biomass raw materials and has strong adaptability. The crusher crushes larger pieces of biomass raw materials into small particles with a particle size range of 20-50 mm, which is convenient for subsequent storage and utilization. Specifically, the crusher 10 crushes the biomass raw materials, and then feeds the biomass particles (biomass to be burned) into the storage bin 11, and then the storage bin 11 is connected to two parallel primary spiral feeding pipes 12, and an anti-blocking spiral ratchet feeder 13 is installed at the end of the primary spiral feeding pipe 12 (close to the end of the buffer bin), and the anti-blocking spiral ratchet feeder 13 is used to loosen the biomass particles and evenly fall on the conveyor belt 14 of the buffer bin 15. The buffer bin 15 is connected to two parallel secondary spiral feeding pipes 16, and finally connected to the feeding port 17 in front of the furnace.

[0050] For example, when one of the two primary spiral feed pipes 12 fails, the other one will run at full load to ensure the normal operation of the boiler. Similarly, when one of the two secondary spiral feed pipes 16 fails, the other one will run at full load.

[0051] Exemplarily, a buffer storehouse 15 is provided to ensure that the biomass to be burned enters the synergistic combustion unit uniformly, so as to ensure a stable load of the synergistic combustion unit.

[0052] In a possible embodiment, the cooperative combustion unit includes: a fluidized bed and a combustion furnace, wherein the fluidized bed is arranged at the bottom of the combustion furnace, and the furnace body of the combustion furnace is sequentially provided with a furnace front feed port, a primary air port, a secondary air port and a tertiary air port in a vertically upward direction, and the biomass conveying unit is connected to the furnace front feed port.

[0053] In a possible implementation manner, the primary air inlet is used to transport air containing coal powder into the furnace body of the combustion furnace, wherein the mass flow ratio of coal powder to air is 0.4-0.5.

[0054] For example, Figure 1-Figure 2 As shown, during normal combustion, the furnace body of the combustion furnace is provided with a furnace front feed port 17, a primary air port 24, a secondary air port 25 and a tertiary air port 26 in sequence in the vertically upward direction, and the biomass conveying unit is connected to the furnace front feed port, and the primary air volume and the fluidizing air 27 should account for 40-50% of the total air volume. The fluidizing air 27 blows upward from the bottom of the fluidized bed 23, and the air volume of the fluidizing air 27 accounts for 30-50% of the primary air volume. The fluidizing air velocity of the fluidized bed maintains the minimum fluidizing air velocity. The biomass to be burned is fed into the fluidized bed 23 through the furnace front feed port 17, and the coal powder is fed into the furnace 21 through the primary air port 24, and the mass flow ratio of the coal powder to the air is about 0.4-0.5. The upper limit of the mass flow ratio of the coal powder to the air is 1, and the coal powder with a mass flow ratio exceeding 1 will not be ignited. When the ratio of fuel to air is between 0.5 and 1, the ignition is good but the flame temperature will decrease, and the flame stability will decrease. The particle size of coal powder is 60-200μm, which is relatively coarse to ensure that a part of the coal powder can fall into the fluidized bed, reducing the coal grinding power of the pulverizer and saving costs.

[0055] Exemplarily, the high-temperature fluidizing air blown upward from the fluidized bed dilutes the pulverized coal, so that the pulverized coal is ignited and burned in the reburning zone 22. Most of the pulverized coal can be burned in the reburning zone 22, while the remaining pulverized coal falls into the fluidized bed and burns therein. The high temperature of the reburning zone 22 promotes the combustion of coal particles above the fluidized bed 23, wherein nitrogen oxides can be reduced, reducing nitrogen oxide emissions and also improving the combustion efficiency of the boiler.

[0056] In a possible implementation, the output power ratio of the combustion furnace and the fluidized bed is 7:3.

[0057] In a possible implementation, the present application provides a control method for a biomass-blended combustion furnace, which is applied to the biomass-blended combustion furnace as described above, comprising:

[0058] Acquiring operation parameters of the biomass-blended combustion furnace through an operation monitoring unit in the biomass-blended combustion furnace, and sending the operation parameters to a control unit in the biomass-blended combustion furnace, wherein the operation parameters include temperature data, load data, air volume data, and feed volume data;

[0059] Performing fuzzy processing on the operating parameters by the control unit to obtain a fuzzy data set;

[0060] Exemplarily, before the step of fuzzy processing the operating parameters by the control unit, it also includes: preprocessing the operating parameters, and the preprocessing includes but is not limited to data sampling processing, data normalization processing, data smoothing processing and data filtering processing.

[0061] Exemplarily, the process of fuzzifying the operating parameters may be understood as a process of converting precise data into a fuzzy data set.

[0062] The control unit matches the fuzzy data set with a preset fuzzy rule in a preset fuzzy rule base to obtain a preset fuzzy rule corresponding to the fuzzy data set, and uses the preset fuzzy rule corresponding to the fuzzy data set as a target rule;

[0063] Exemplarily, the preset fuzzy rules in the preset fuzzy rule base are specifically:

[0064] If the bed temperature Is high And the load Is high Then the primary air volume Is increases;

[0065] If the bed temperature Is high And the load Is medium Then the primary air volume Is increases;

[0066] If the bed temperature Is high And the load Is low Then the primary air volume Is increases;

[0067] If bed temperature Is and load Is Then primary air volume Is increases;

[0068] If the bed temperature Is medium And the load Is low Then the primary air volume Is reduced;

[0069] If the bed temperature Is low And the load Is low Then the primary air volume Is reduced;

[0070] If the bed temperature Is high And the range of the reburning zone Is high Then the biomass feed amount Is reduced;

[0071] If the bed temperature Is high And the range of the reburning zone Is medium Then the biomass feed amount Is reduced;

[0072] If the bed temperature Is and the range of the reburning zone Is Then the biomass feed amount Is increases;

[0073] If the bed temperature Is medium And the range of the reburning zone Is low Then the biomass feed amount Is increases;

[0074] If the bed temperature Is low And the reburning zone range Is low Then the biomass feed amount Is increased.

[0075] By means of the control unit, the activation condition in the target rule is inferred according to the Sugeno inference method to obtain a fuzzy output value;

[0076] The control unit defuzzifies the fuzzy output value to obtain data to be adjusted, and the control unit generates a control instruction according to the data to be adjusted, wherein the control instruction is used to control the biomass conveying unit and / or the cooperative combustion unit.

[0077] In a possible implementation manner, the step of performing defuzzification processing on the fuzzy output value by the control unit to obtain the data to be adjusted includes:

[0078] The control unit performs defuzzification processing on the fuzzy output value according to the weighted average method to obtain the data to be adjusted.

[0079] In a possible implementation, a method for controlling a biomass-blended combustion furnace includes:

[0080] Input variable identification: Identify input variables, such as temperature, load, air volume, feed rate, etc.;

[0081] Fuzzy processing: converting the input precise data into fuzzy sets;

[0082] Rule matching: According to the current input conditions, match with the fuzzy rule base, match the corresponding fuzzy rules, and activate the rules that meet the conditions;

[0083] Fuzzy operation, using Sugeno reasoning;

[0084] Defuzzification processing: Defuzzify the fuzzy output value and convert it into an accurate control quantity to facilitate use in actual control systems.

[0085] The defuzzification method adopted is the weighted average method. The basic principle of the weighted average method is to calculate the output value by weighted average, where the weight is the membership degree of the fuzzy set.

[0086] Calculation formula: y = sum(mui*xi) / sum(mui)

[0087] Where y: calculated weighted average;

[0088] mui: membership function, indicating the membership corresponding to the input (xi);

[0089] xi: input value of the function.

[0090] It is suitable for multi-input and single-output scenarios and is widely used in industrial control systems.

[0091] According to the precise control quantity after defuzzification, at least one of the air volume, coal powder fineness, fluidization wind speed and feed amount is adjusted to achieve control of the combustion state.

[0092] In a possible implementation, the method further includes: real-time monitoring of the combustion state and performing feedback adjustment to ensure the control effect.

[0093] In a possible implementation, the method further includes: displaying the current combustion status and control variables in real time to facilitate monitoring and adjustment by operators.

[0094] In a third aspect, an embodiment of the present application provides an electronic device, comprising a memory, a processor, and a computer program stored in the memory and executable on the processor, wherein the processor implements the following steps when executing the computer program: obtaining the operating parameters of the biomass-blended combustion furnace through an operation monitoring unit in the combustion furnace for burning biomass, and sending the operating parameters to a control unit in the combustion furnace for burning biomass, wherein the operating parameters include temperature data, load data, air volume data, and feed volume data; fuzzifying the operating parameters through the control unit to obtain a fuzzy data set; matching the fuzzy data set with a preset fuzzy rule in a preset fuzzy rule library through the control unit to obtain a preset fuzzy rule corresponding to the fuzzy data set, and using the preset fuzzy rule corresponding to the fuzzy data set as a target rule; inferring the activation condition in the target rule according to the Sugeno reasoning method through the control unit to obtain a fuzzy output value; defuzzifying the fuzzy output value through the control unit to obtain data to be adjusted, and generating a control instruction through the control unit according to the data to be adjusted, wherein the control instruction is used to control the biomass conveying unit and / or the cooperative combustion unit.

[0095] In a fourth aspect, an embodiment of the present application provides a computer-readable storage medium, wherein the computer-readable storage medium stores a computer program, and when the computer program is executed by a processor, the following steps are implemented: obtaining the operating parameters of the biomass-blended combustion furnace through an operation monitoring unit in the combustion furnace for burning biomass, and sending the operating parameters to a control unit in the combustion furnace for burning biomass, wherein the operating parameters include temperature data, load data, air volume data, and feed volume data; fuzzifying the operating parameters through the control unit to obtain a fuzzy data set; matching the fuzzy data set with a preset fuzzy rule in a preset fuzzy rule library through the control unit to obtain a preset fuzzy rule corresponding to the fuzzy data set, and using the preset fuzzy rule corresponding to the fuzzy data set as a target rule; reasoning the activation condition in the target rule according to the Sugeno reasoning method through the control unit to obtain a fuzzy output value; defuzzifying the fuzzy output value through the control unit to obtain data to be adjusted, and generating a control instruction through the control unit according to the data to be adjusted, wherein the control instruction is used to control the biomass conveying unit and / or the cooperative combustion unit.

[0096] The embodiments described above are only used to illustrate the technical solutions of the present application, rather than to limit them. Although the present application has been described in detail with reference to the aforementioned embodiments, a person skilled in the art should understand that the technical solutions described in the aforementioned embodiments may still be modified, or some of the technical features may be replaced by equivalents. Such modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the embodiments of the present application, and should all be included in the protection scope of the present application.

Claims

1. A biomass-compounding combustion furnace, characterized in that: include: Biomass conveying unit, co-combustion unit, operation monitoring unit and control unit; The biomass conveying unit is used to crush the biomass raw material into biomass to be burned of a preset size, and to convey the biomass to be burned to the coordinated combustion unit; The coordinated combustion unit is used to mix and burn the biomass to be burned and coal powder; The operation monitoring unit is used to monitor the operation parameters of the biomass conveying unit and the cooperative combustion unit, and send the operation parameters to the control unit. The control unit is used to control the biomass conveying unit and / or the cooperative combustion unit according to the operation parameters.

2. A biomass-blended combustion furnace as claimed in claim 1, characterized in that: The biomass conveying unit includes: a crusher, a storage bin, and a buffer bin; the crusher is used to crush the biomass raw materials into biomass to be burned of preset sizes, the output end of the crusher is connected to the feed port of the storage bin, the discharge port of the storage bin is connected to the feed port of the buffer bin through a primary spiral feeding pipe, and the feed port of the buffer bin is connected to the synergistic combustion unit through a secondary spiral feeding pipe, so as to convey the biomass to be burned to the synergistic combustion unit.

3. A biomass-compounding combustion furnace as claimed in claim 2, characterized in that: An anti-blocking spiral ratchet feeder is arranged at one end of the primary spiral feeding pipe close to the buffer bin.

4. A biomass-compounding combustion furnace as claimed in claim 1, characterized in that: The collaborative combustion unit includes: a fluidized bed and a combustion furnace, wherein the fluidized bed is arranged at the bottom of the combustion furnace, and the furnace body of the combustion furnace is sequentially provided with a furnace front feeding port, a primary air port, a secondary air port and a tertiary air port in a vertically upward direction, and the biomass conveying unit is connected to the furnace front feeding port.

5. The biomass-blended combustion furnace according to claim 1, characterized in that: The primary air inlet is used to transport air containing coal powder into the furnace body of the combustion furnace, wherein the mass flow rate ratio of coal powder to air is 0.4-0.

5.

6. A biomass-compounding combustion furnace as claimed in claim 4, characterized in that: The output power ratio of the combustion furnace and the fluidized bed is 7:

3.

7. A control method for a biomass-blended combustion furnace, applied to the biomass-blended combustion furnace according to claims 1 to 6, characterized in that: include: Acquiring operation parameters of the biomass-blended combustion furnace through an operation monitoring unit in the biomass-blended combustion furnace, and sending the operation parameters to a control unit in the biomass-blended combustion furnace, wherein the operation parameters include temperature data, load data, air volume data, and feed volume data; Performing fuzzy processing on the operating parameters by the control unit to obtain a fuzzy data set; The control unit matches the fuzzy data set with a preset fuzzy rule in a preset fuzzy rule base to obtain a preset fuzzy rule corresponding to the fuzzy data set, and uses the preset fuzzy rule corresponding to the fuzzy data set as a target rule; By means of the control unit, the activation condition in the target rule is inferred according to the Sugeno inference method to obtain a fuzzy output value; The control unit defuzzifies the fuzzy output value to obtain data to be adjusted, and the control unit generates a control instruction according to the data to be adjusted, wherein the control instruction is used to control the biomass conveying unit and / or the cooperative combustion unit.

8. The control method of a biomass-blended combustion furnace according to claim 7, characterized in that: The step of performing defuzzification processing on the fuzzy output value by the control unit to obtain the data to be adjusted includes: The control unit performs defuzzification processing on the fuzzy output value according to the weighted average method to obtain the data to be adjusted.

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