Precise boiler combustion data monitoring system and carbon emission acquisition method

Abstract

The invention relates to the technical field of efficient energy-saving boiler and air pollution automatic monitoring, in particular to a boiler combustion data accurate monitoring system and a carbon emission acquisition method, the boiler combustion data accurate monitoring system comprises an Internet of Things monitoring system, and the Internet of Things monitoring system comprises a code scanning recognition module, a data processing center, a coal usage amount monitoring module and a control module; a unique identification code-green code is given to fuel, and when the accumulated coal usage amount reaches the coal usage amount of the batch, the control module controls the coal blowing-in device to stop. On the basis of a carbon emission actual measurement accounting method, a continuous emission monitoring system is installed at an industrial chimney, a boiler and other emission sources, through actual measurement of the concentration of gas such as carbon dioxide in flue gas and combination of flue gas flow data, the amount of pulverized coal or air is reliably adjusted according to needs, and efficient energy conservation and carbon emission reduction of the boiler are achieved. Penetration type fine management and accurate acquisition of carbon emission data in the industrial production operation process are achieved, and the data are reliable.

Description

Technical Field

[0001] The present invention relates to the technical field of efficient energy-saving boilers and automated air pollution monitoring, and in particular to a boiler combustion data precision monitoring system and a carbon emission collection method. Background Art

[0002] The main factors affecting atmospheric pollutants such as industrial carbon emissions are industrial boilers and coal quality. Generally, industrial boilers with low combustion efficiency have the following problems: the fuel cannot be fully burned, and a large amount of chemical energy is not converted into heat energy, but discharged with flue gas, resulting in an energy utilization rate of only 60%-70%, causing energy waste. At the same time, incomplete combustion of fuel directly leads to a significant increase in pollutant emissions. Therefore, the field of environmental protection technology services needs to spend a lot of manpower and material resources for frequent testing, but the prevention and control effect of air pollution is still not obvious.

[0003] The current carbon emission monitoring technology mainly uses emission factors, raw materials and fuel usage data, and carbon balance theory to calculate the direct and indirect emission data of greenhouse gases such as carbon dioxide. It has the disadvantages of much human interference and large errors, and is prone to collusion between carbon emission organizations and third-party testers, falsification of production records, interference with monitoring facilities, and failure to implement corresponding emission reduction requirements and air pollution prevention and control. For example, the difference in the quality of different coal fuels is very obvious, mainly reflected in economic costs, chemical composition, physical properties, etc. For example, high-quality coal usually has a higher carbon content, generally above 80%. For example, anthracite has a carbon content of about 90%, which can provide higher calorific value, but the cost is relatively higher. Although the price of lower-quality lignite is low, its carbon content is not only only 60%-70%, but also significantly higher in sulfur content; sulfur is a harmful element in coal, and after combustion, it will produce pollutants such as sulfur dioxide, causing serious pollution to the atmospheric environment. Generally, the sulfur content of high-quality coal is usually low, usually below 1%, while the sulfur content of some poor-quality coal can be as high as about 5%. At present, the data collection of pulverized coal combustion is mostly done manually on a regular basis, such as monthly or annual accounting. Sometimes, in production combustion, high-quality pulverized coal is used in boilers near the inspection period for inspection personnel to inspect, and after the inspection, it is mixed or even directly replaced with low-quality pulverized coal, which is difficult to supervise. As a result, the monitoring cannot reflect the dynamic changes of pollutants such as boiler carbon powder combustion and carbon emissions in real time, and it is difficult to detect emission anomalies and optimize adjustments in time. The fundamental problem is that it is impossible to fundamentally realize accurate and automatic monitoring of the quality of carbon powder used in daily life in various factories. Summary of the invention

[0004] The present invention provides a boiler combustion data accurate monitoring system and a carbon emission collection method to solve the above-mentioned background technical problems.

[0005] To achieve the above object, the present invention adopts the following technical solution:

[0006] The boiler combustion data accurate monitoring system includes an Internet of Things monitoring system, which includes:

[0007] The code scanning and recognition module is used to scan the QR code and transmit the scanned code information to the data processing center; the data processing center is used to receive and decode the scanned code information, store the coal quality information and the coal usage of this batch, and receive the coal usage data transmitted by the coal usage monitoring module, and calculate the cumulative coal usage;

[0008] The coal usage monitoring module monitors the coal usage in real time through a coal injection device equipped with a precise metering device and transmits the data to the data processing center;

[0009] The control module is connected to the data processing center and the coal blowing device. When the data processing center determines that the cumulative coal usage reaches the coal usage of this batch, the control module controls the coal blowing device to shut down.

[0010] Optionally, the precise metering device includes a metering device body, the metering device body includes a metering cavity, the left end of the metering cavity is provided with a discharge port, and the upper part is provided with a feed port; a first push rod and a second push rod are movably provided in the metering cavity; the first push rod is provided on the left side of the feed port, and the second push rod is provided on the right side of the feed port; the diameters of the first push rod and the second push rod match the tube diameter of the metering cavity; the first push rod and the second push rod are connected by a thin rod; the diameter of the thin rod is smaller than the diameter of the first push rod, thereby forming a quantitative storage cavity in the thin rod area; quantitative loading and quantitative discharging of materials are realized through the synchronous displacement of the first push rod and the second push rod in the metering cavity.

[0011] Optionally, a guide rod is provided on the left end side of the first push rod; a lead seat is provided on the left end side of the metering device body, and the lead seat is provided with a lead hole corresponding to the guide rod; the guide rod is movably arranged in the lead hole; a material discharge cavity is reserved between the lead seat and the discharge port.

[0012] Optionally, the coal blowing device includes a blowing device, which is provided with a gas-powder mixing chamber; a coal blowing outlet is provided on one side of the upper part of the gas-powder mixing chamber; a rotating scattering disk is rotatably provided in the gas-powder mixing chamber, and the cross-sectional surface of the rotating scattering disk is U-shaped; a feed pipe is provided above the center of the rotating scattering disk; and an air intake device is provided below the rotating scattering disk.

[0013] Optionally, the air intake device is a truncated cone-shaped blowing seat; the upper end of the truncated cone-shaped blowing seat is connected to the rotating breaking disk through a bearing; the outer wall of the truncated cone-shaped blowing seat is provided with a plurality of air outlet holes; an inner air cavity is provided on the inner side of the plurality of air outlet holes, and the inner air cavity is connected to an air intake pipe.

[0014] Optionally, the cross-section of the rotating scattering disk and the truncated cone-shaped blowing seat is M-shaped.

[0015] Optionally, the gas-powder mixing chamber is hemispherical or hemispherical.

[0016] Optionally, a conical cover is provided above the rotating scattering disk, and a conical cavity is formed between the conical cover and the rotating scattering disk.

[0017] Optionally, a circle of downwardly inwardly rolled arc surface is provided on the outer periphery of the upper end of the conical cover to form a deceleration chamber; and a powder outlet is provided at the lower part of the deceleration chamber.

[0018] Optionally, a curved surface deceleration net is provided in the deceleration chamber; the curved surface deceleration net is arranged in a circle along the deceleration chamber.

[0019] Optionally, radial blades or arc-shaped convex bodies are arranged on the surface of the rotating scattering disk. The carbon emission collection method is characterized by: comprising using the boiler combustion data precision monitoring system as described above, the steps are as follows:

[0020] (1) The quality information of the target coal, such as the calorific value, sulfur content, ash content, moisture content, and the purchase quantity of this batch, is encoded to generate a QR code;

[0021] (2) After the coal is ground into powder, it is passed into the coal blowing device, and the QR code is scanned by the code scanning and recognition module to start the coal blowing device and blow it into the boiler;

[0022] (3) The precise metering device of the coal injection device performs precise metering and transmits the accumulated usage data to a data processing center;

[0023] (4) Based on the actual measurement and accounting method of carbon emissions, the concentration of carbon dioxide in the flue gas is measured, that is, by evaluating the carbon emission pollution, and then adjusting and determining the parameters of the coal injection device for the purpose of reducing air pollution, the optimal pulverized coal-air ratio for the corresponding boiler of this batch of standard coal is obtained, so as to achieve high efficiency and energy saving of the boiler;

[0024] (5) Calculate carbon emissions based on the quality information of the target coal batch combined with the current boiler combustion efficiency and the ambient temperature sensor and oxygen sensor data;

[0025] (6) Based on the accumulated coal usage, the control module controls whether the coal blowing device is shut down, and calculates the accumulated carbon emissions based on the accumulated coal usage to obtain accurate carbon emission data.

[0026] The beneficial effects of the present invention compared with the prior art are as follows:

[0027] 1. The precise metering device of the present application relies on the metering cavity as a quantitative metering chamber. The coal powder discharge amount of a single reciprocating stroke is constant. Its metering can be achieved by only collecting data on the number of reciprocating strokes of the reciprocating motor. The structure of the present application has accurate metering and stable and reliable operation. By setting a code scanning and recognition module, fuel coding is adopted.

[0028] 2. A relatively closed conical cavity is formed between the conical cover and the rotating scattering disk, which can significantly reduce the impact of the airflow outside the conical cavity on the coal powder in a discrete tumbling state, and is conducive to preventing the coal powder, especially the light powder, from rolling under the airflow while maintaining the dispersion effect of the coal powder at a lower speed. Maintaining the steady state inside the conical cavity improves the effective adjustment and controllability of the subsequent mixing ratio of coal powder and air, thereby significantly improving the combustion efficiency of industrial boilers, achieving high efficiency and energy saving, and reducing carbon emissions and air pollution.

[0029] 3. Based on the actual measurement and accounting method of carbon emissions, the carbon emission pollution is evaluated, and then the parameters of the coal blowing device are adjusted and determined for the purpose of reducing air pollution, so as to obtain the optimal coal powder-air ratio for the corresponding boiler matching this batch of standard coal. The key parameters of the equipment can be adjusted based on the actual measured data of atmospheric pollutants, significantly reducing the emission of boiler pollutants. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] Figure 1 It is a structural schematic diagram of the coal blowing device of the present invention;

[0031] Figure 2 It is a schematic diagram of the structure of the insufflation device of the present invention;

[0032] Figure 3 yes Figure 2 Schematic diagram of fluid motion;

[0033] Figure 4 It is a structural schematic diagram of the precise metering device of the present invention;

[0034] Figure 5 It is a schematic diagram of the principle of realizing efficient energy saving of boilers and penetrating and refined management and accurate acquisition of carbon emission data according to the present invention. DETAILED DESCRIPTION

[0035] The above content is a detailed description of this patent in combination with specific implementation methods, and it cannot be determined that the specific implementation methods of this patent are limited to the above description. For ordinary technicians in the technical field to which this patent belongs, without departing from the concept of this patent, several substitutions or modifications made to the above-described implementation methods should be deemed to belong to the protection scope of this patent. In the description of this specification, in this specification, the specific features, structures, materials or characteristics described can be combined in a suitable manner in any one or more embodiments or examples. In the absence of contradictions, those skilled in the art can combine and combine the different embodiments or examples described in this specification and the features of different embodiments or examples. Although the embodiments of the present invention and their advantages have been described in detail, it should be understood that various changes, substitutions and modifications can be made herein without departing from the scope of protection of the patent application.

[0036] The boiler combustion data accurate monitoring system includes an Internet of Things monitoring system, which includes:

[0037] A code scanning and recognition module is used to scan the QR code and transmit the scanned code information to the data processing center;

[0038] The data processing center is used to receive and decode the scanned code information, store the coal quality information and the coal usage of this batch, receive the coal usage data transmitted by the coal usage monitoring module, and calculate the cumulative coal usage;

[0039] The coal usage monitoring module monitors the coal usage in real time through a coal injection device equipped with a precise metering device and transmits the data to the data processing center;

[0040] The control module is connected to the data processing center and the coal blowing device. When the data processing center determines that the cumulative coal usage reaches the coal usage of this batch, the control module controls the coal blowing device to shut down.

[0041] In this embodiment, a communication module is also provided, and the communication module can be connected to the production control system through wireless communication and interface protocol to ensure timely transmission and feedback of information. In specific implementation, the interface protocol can preferably support standard industrial communication protocols such as Modbus and Profibus. By supporting standard industrial communication protocols such as Modbus and Profibus, data transmission is made more reliable and efficient through the support of such protocols.

[0042] In order to achieve high-precision monitoring of carbon emission data, the production control system can also accept or import other required data, such as the combustion efficiency of the corresponding boiler, the temperature in the boiler furnace, the temperature of the boiler exhaust gas, the pressure in the furnace, etc., and the above data can be achieved by existing monitoring technology.

[0043] In the present application, a technology for accurately measuring coal powder and controlling the amount of air mixed can be provided. Therefore, in the present embodiment, Figure 4 As shown, the precise metering device includes a metering device body 1-1, and the metering device body 1-1 includes a metering cavity, which is a horizontal cylindrical structure with openings at both ends. A discharge port is arranged at the left end of the metering cavity, and a feed port 23 is arranged at the upper part, which is beneficial to improve the smoothness of the falling of coal powder; in this embodiment, the feed port 23 is arranged at the top of the metering cavity, and a slender waist hole structure can be selected to reduce the contact area between the coal powder above the feed port 23 and the second push rod 27, and the slender waist hole structure can improve the efficiency of the coal powder fully entering the quantitative storage cavity and improve the reliability of feeding. A coal powder feed hopper 24 is arranged on the feed port 23. In some embodiments, the coal powder can be conveyed to the coal powder feed hopper 24 by a conveyor belt. At the same time, a vibrator can be fixed on the coal powder feed hopper 24. A first push rod 30 and a second push rod 27 are movably arranged in the metering chamber. The first push rod 30 is arranged on the left side of the feed port 23, and the second push rod 27 is arranged on the right side of the feed port 23. The diameters of the first push rod 30 and the second push rod 27 match the pipe diameter of the metering chamber. The first push rod 30 and the second push rod 27 are connected by a thin rod 28. The diameter of the thin rod 28 is smaller than the diameter of the first push rod 30 and the second push rod 27, thereby forming a quantitative storage chamber 29 in the area of ​​the thin rod 28. The quantitative loading and discharging of the material are realized by the synchronous displacement of the first push rod 30 and the second push rod 27 in the metering chamber 29. That is, during operation, the first push rod 30 acts as a stopper for quantitative material, and the second push rod 27 plays a role in pushing the material in the metering chamber 29. Therefore, during preparation and processing, it is necessary to ensure that the length between the left end side of the feed port 23 and the discharge port is not less than the length of the thin rod 28, and the length of the first push rod 30 is not less than the length of the thin rod 28, so as to ensure quantitative loading and quantitative discharging.

[0044] In order to improve the reliability of operation, in this embodiment, a guide rod 21 is provided on the left end side of the first push rod 30; a lead seat is provided on the left end side of the metering device body 1-1, and the lead seat is provided with a lead hole 20 corresponding to the guide rod; the guide rod 21 is movably arranged in the lead hole 20; a material discharge cavity 22 is reserved between the lead seat and the discharge port. A dispersed feed hopper 31 is also provided below the material discharge cavity 22. In this embodiment, the right end of the second push rod 27 is driven to reciprocate by a driving rod 26, and the right end of the driving rod 26 is connected to a reciprocating motor or a telescopic cylinder through a flange 25. In this embodiment, the reciprocating motor or the telescopic cylinder is preferably a model with an adjustable reciprocating frequency.

[0045] By adopting this precise metering device, there is no need for precise sensors, that is, in long-term use, there is no need for tedious regular metering calibration, the metering accuracy is high and the anti-interference ability is strong. For example, the traditional use of heavy sensors and flow sensors is prone to metering failures such as decreased sensitivity during the use of coal powder metering due to factors such as the use environment, so regular calibration is required. Once the sensitivity decreases, it is not easy to be known in time, which leads to inaccurate and uncontrollable monitoring and collected data. The precise metering device of the present application relies on the metering chamber 29 as a quantitative metering chamber. The coal powder discharge amount of a single reciprocating stroke is constant. Its metering only needs to collect the data of the reciprocating number of the reciprocating motor to achieve precise metering. The structure of the present application has accurate metering and stable and reliable operation.

[0046] Optionally, the coal blowing device includes a blowing device 1, wherein the blowing device 1 is provided with a gas-powder mixing chamber 10; a coal blowing outlet 8 is provided on one side of the upper portion of the gas-powder mixing chamber 10; in this embodiment, in order to improve the flow smoothness of the fluid, as Figure 2 As shown, the gas-powder mixing chamber 10 can be selected to be hemispherical or hemispherical. A rotating scattering disc 16 is rotatably arranged in the gas-powder mixing chamber 10, and a rotating shaft 18 is arranged at the lower part of the rotating scattering disc 16, which can be rotatably fixed to the bottom frame through a bearing 17; the lower part of the rotating shaft 18 is driven to rotate by a centrifugal motor. In this embodiment, the centrifugal motor is preferably a variable frequency motor, and is directly connected to the rotating shaft 18; the cross-section of the rotating scattering disc 16 is U-shaped; a feed pipe 9 is arranged above the center of the rotating scattering disc 16; the feed pipe 9 is connected to the dispersion feed funnel 31 is connected; in the present embodiment, the feed pipe 9 is vertically arranged, penetrates from the top of the gas-powder mixing chamber 10, and is connected and fixed to the top of the gas-powder mixing chamber 10; a truncated cone-shaped blowing seat 3 is arranged below the rotating scattering disk 16; the upper end of the truncated cone-shaped blowing seat 3 is connected to the rotating scattering disk 16 through a bearing (preferably a sealed bearing 13); in the present embodiment, the lower end diameter of the truncated cone-shaped blowing seat 3 is larger than the upper end diameter of the rotating scattering disk 16, thereby forming Figure 2 As shown, the cross-section of the rotating scattering disk 16 and the truncated cone-shaped blowing seat 3 is M-shaped; the function of this structure is: Figure 3As shown, in this embodiment, after the coal powder is broken up, it falls from the upper part of the rotating breaking disk 16, and then blows air obliquely upward through the truncated cone-shaped blowing seat 3 on the truncated cone surface, so that the coal powder and the air are fully mixed, and the coal powder can be blown to the upper part of the gas-powder mixing chamber 10 more smoothly and fully, thereby achieving the timely and full discharge of the air-coal powder mixture from the coal blowing outlet 8. The timely and full discharge can reduce the impact on the subsequent continuous proportional mixing of coal powder and air. At the same time, the truncated cone-shaped blowing seat 3 can provide a better and more uniform gas-powder contact environment for the coal powder scattered from the top of the circular rotating breaking disk 16 from top to bottom, significantly improving the uniformity of gas-powder mixing, which is one of the main means to achieve efficient energy saving of boilers and achieve carbon emission reduction and controllable accurate collection from the equipment level.

[0047] like Figure 2 As shown, the outer wall of the truncated cone-shaped blowing seat 3 is provided with a plurality of air outlet holes 2; an inner air cavity 2-1 is provided inside the plurality of air outlet holes 2, and the inner air cavity 2-1 is provided with an air inlet 15, and the air inlet 15 is connected to an air intake pipe 14, and the air intake pipe 14 is provided with an air flow meter and a regulating valve.

[0048] In the present embodiment, the rotating scattering disk 16 is mainly used to disperse the coal powder metered and delivered by the precise metering device. The preferred solution is as follows: the inclination of the rotating scattering disk 16 can be selected to be about 30°. For example, according to the particle size of common industrial coal powder, most of the powder is distributed in the range of 20-100μm. Therefore, the speed of the centrifugal motor in the present embodiment can be selected to be 130-180 rpm. The purpose is to reduce the speed at which the coal powder is thrown out of the rotating scattering disk 16, that is, the rotating scattering disk 16 only needs to play a dispersing role. Reducing the speed at which the coal powder is thrown out is beneficial to the mixing effect of the airflow from the air outlet of the truncated cone-shaped blowing seat 3 and the coal powder, as well as the effective and timely discharge of the air-coal powder mixture. In order to reduce the interference of the airflow on the coal powder during the centrifugal dispersion process of the coal powder on the rotating scattering disk 16, in the present embodiment, Figure 2As shown, a conical cover 4 is arranged above the rotating scattering disk 16, and a circle of arc surface rolling downward inward is arranged on the outer periphery of the upper end of the conical cover 4, that is, the cross section is inclined U-shaped to form a deceleration chamber 6; a powder outlet 5 is arranged at the lower part of the deceleration chamber 6. The conical cover 4 is connected to the lower end of the feed pipe 9; in order to improve stability, a plurality of reinforcing rods 7 can also be arranged on the outer periphery of the conical cover 4. The functions of this structure are: 1. A relatively closed conical cavity is formed between the conical cover 4 and the rotating scattering disk 16. At this time, the construction of a closed conical cavity can significantly reduce the influence of the airflow outside the conical cavity on the coal powder in discrete tumbling, which is conducive to maintaining the dispersion effect of the coal powder at a lower speed and preventing the coal powder, especially the light powder, from rolling due to the interference of airflow fluctuations. If the powder rolls, it will reduce the effect of effective mixing of the coal powder feed amount and the input gas flow rate in a controllable proportion and the control of the proportion stability in the later stage. That is, it is ensured that the discrete powders input into the rotating scattering disk 16 per unit time can be outputted to the top of the several air outlets 2 of the truncated cone-shaped blowing seat 3 in a quantitative, sufficient and stable manner, so as to ensure that the gas output (adjustable) from the several air outlets 2 per unit time is mixed in a stable proportion, and the controllability and adjustable accuracy of the mixing ratio of the powder volume and the air volume per unit time are improved (to improve the combustion efficiency, it is necessary to match the appropriate mixing ratio of the powder volume and the air volume in combination with the boiler model, ambient temperature, carbon content of each batch of standard coal and other physical properties, and the stability of the equipment's control of this ratio also directly affects the combustion efficiency and carbon emissions). 2. The design of the deceleration chamber 6 can decelerate and guide the discretely thrown powders, so that the powders tend to naturally scatter downward to the top of the several air outlets 2, that is, if the deceleration chamber 6 is reduced, the powders contain an outward centrifugal force when they are thrown out, and when the powders are mixed with the air, they will be affected by the centrifugal force of the powders, thereby affecting the controllability of the mixing of the powders and the air, and affecting the stability and accuracy of the subsequent regulation of the ratio of the coal powder and the air flow.

[0049] At the same time, because the coal powder actually contains light powder below 45μm and some heavier powder above 45μm after crushing, in order to improve the smoothness of the powder falling after being broken up by the rotating breaking disk 16 and reduce the light powder from returning to the conical cavity, in this embodiment, a curved surface deceleration net 12 is also provided in the deceleration chamber; the curved surface deceleration net is arranged in a circle along the deceleration chamber.

[0050] In order to reduce the influence of the airflow outside the conical cavity on the feeding and discrete processes and improve the stability of the feeding and discrete processes, in this embodiment, radial blades or arc-shaped protrusions 19 may be preferably provided on the disk surface of the rotating breaking disk 16. The arc-shaped protrusions 19 may preferably be provided at the lower part, middle part or upper part of the disk surface. The purpose is to prevent the airflow outside the conical cavity from flowing back into the conical cavity, and even to form a micro-airflow flowing from the feeding pipe 9 to the upper end of the rotating breaking disk 16.

[0051] When in use, the coal blowing device can be combined with other relevant combustion data of the combustion furnace or exhaust gas emission concentration data to adjust the following relevant parameters to adjust the coal-air ratio blown out from the coal blowing outlet 8; for example, based on the carbon emission measurement and accounting method, a continuous emission monitoring system (CEMS) is installed at emission sources such as industrial chimneys and boilers, and the carbon dioxide (CO 2 ), carbon monoxide (CO), sulfur dioxide (SO 2 ), nitrogen oxides (NOx) and other gas concentrations (different ambient temperatures in winter and summer will also have an impact, so the control reference value / set value of the key parameters of this device can be determined through actual tests under different temperature environments), combined with flue gas flow data, after calculating the carbon emission flux, the coal powder and air volume are adjusted as needed; for example, by adjusting the reciprocating frequency of the reciprocating motor as needed, the coal powder feeding speed can be adjusted; and by adjusting the speed of the centrifugal motor, the amount of powder per unit time before the coal powder and air are mixed can be adjusted; and by adjusting the intake pressure or intake flux of the intake pipe 14, the mixing ratio of coal powder and air and the controllable mixing effect can be achieved, thereby achieving high-precision metering, dispersion and controllable and stable adjustment of the ratio of coal powder to air. By achieving fast and reliable stable adjustment of the combustion feed ratio, the relevant equipment parameters for the best combustion efficiency of this batch (this standard coal) in this boiler (the boiler model of each factory is different) can be determined (determined in combination with the actual carbon emission measurement and calculation data) to improve the boiler combustion efficiency, achieve high-efficiency energy saving of the boiler and reduce carbon dioxide emissions.

[0052] In some embodiments, the following scheme can also be adopted: the air inlet pipe 14 is not connected to positive air pressure, but directly uses atmospheric pressure, and then the venturi material port is connected to the coal blowing outlet 8, and the uniform gas-powder mixture at the coal blowing outlet 8 is adsorbed by the negative pressure of the venturi, and then blown into the boiler by the venturi. This scheme is adopted because the material provided by the coal blowing outlet 8 can provide a gas-powder mixture with a stable ratio. Therefore, after the action of the venturi, the ratio of the gas-powder mixture finally blown into the boiler can also ensure a relatively stable ratio, which is conducive to regulating / maintaining a better combustion efficiency and preventing insufficient combustion from affecting the controllability of carbon emissions. This is also another specific feeding implementation method that can achieve high efficiency and energy saving of boilers and reduce carbon dioxide emissions.

[0053] The carbon emission collection method includes using the boiler combustion data precision monitoring system as described above, and the steps are as follows:

[0054] (1) The quality information of the target coal, such as the calorific value, sulfur content, ash content, moisture content, and the purchase quantity of this batch, is encoded and processed to generate a QR code; that is, the coal supplier provides the QR code of this information;

[0055] (2) After the coal is ground into powder, it is introduced into the coal blowing device, and the QR code is scanned by the code scanning and recognition module to start the coal blowing device and blow it into the boiler; in this embodiment, Figure 1 As shown, the precise metering device is connected and integrated above the blowing device 1 through a feed pipe 9, that is, as a whole, and the traditional solution is: after the powder is broken up, it is conveyed to the metering device through a conveyor belt, and then conveyed to the blowing device (generally a coal powder spray gun) through a conveyor belt or a long pipeline gas, and then sprayed into the boiler by the coal powder spray gun. This solution brings great uncertainty to supervision. In order to reduce costs, some factories can directly mix low-quality coal powder into the conveying device between the metering device and the blowing device, that is, the low-quality coal powder is not measured by the metering device, or the low-quality coal powder is infiltrated into the low-quality coal powder due to inaccurate measurement by the related sensor module of the metering device. At the same time, if the continuous accuracy and controllability of the measurement cannot be ensured, the scanning code quantitative solution cannot be promoted. The present device realizes a high degree of integration between the precise metering device and the blowing device, and it is difficult to make destructive modifications to the device body. The mixing of low-quality coal powder is significantly reduced during the supervision process. At the same time, the high-precision and high-reliability operation of the precise metering device effectively prevents the metering inaccuracy caused by equipment failure. At the same time, the operating parameters of the reciprocating motor and the centrifugal motor of the precise metering device are matched and regulated, and unauthorized modification directly affects the combustion efficiency. At the same time, the operation of the reciprocating motor is also controlled by the QR code information to control the cumulative feeding amount, which significantly reduces the possibility of fraud. It can realize accurate usage and reliable monitoring of coal of various qualities, and achieve more accurate carbon emission monitoring by using batch coal information and monitoring of other conventional data.

[0056] (3) The precise metering device of the coal injection device performs precise metering and transmits the accumulated usage data to a data processing center;

[0057] (4) Based on the actual measurement and accounting method of carbon emissions, a continuous emission monitoring system (CEMS) is installed at emission sources such as industrial chimneys and boilers to measure the carbon dioxide (CO) in the flue gas in real time through infrared spectroscopy, ultraviolet spectroscopy, laser absorption spectroscopy and other technologies. 2 ), carbon monoxide (CO), sulfur dioxide (SO 2), nitrogen oxides (NOx) and other gas concentrations, that is, by evaluating carbon emission pollution, and then adjusting the parameter control of the equipment for the purpose of reducing air pollution, for example: combining the flue gas flow data, calculating the carbon emission flux, adjusting the coal powder or air volume as needed, determining the best reciprocating motor and centrifugal motor, air circulation and other key parameters under the combustion environment, obtaining the best combustion efficiency of this batch of standard coal under the corresponding temperature environment, improving combustion efficiency, reducing incomplete combustion, achieving high efficiency and energy saving of the boiler, and reducing carbon emissions;

[0058] (5) Calculate carbon emissions based on the quality information of the target coal batch combined with the current boiler combustion efficiency and data from ambient temperature sensors and oxygen sensors;

[0059] (6) The control module controls whether the coal blowing device should be shut down based on the cumulative amount of coal used. This is because the quality and combustion characteristics of each batch of coal (standard coal), the combustion efficiency of the boiler used, etc. are relatively fixed, and the device can accurately measure and it is difficult to mix the quality of coal. Therefore, the cumulative carbon emissions can be calculated based on the cumulative amount of coal used to obtain accurate carbon emission data.

[0060] like Figure 5 As shown, it is a schematic diagram of the principle of the present invention to achieve boiler high efficiency and energy saving and penetrating refined management and accurate acquisition of carbon emission data, that is, through fuel coding identification and control, and through the collection of measured data at the equipment level to achieve optimal regulation of the gas-powder mixture ratio, so as to achieve boiler high efficiency and energy saving; and in carbon emission data collection and monitoring, clear coal fuel quality information and Internet of Things identification, accurate recording and control are used to ensure that the original fuel affecting carbon emissions is accurately controllable, and based on the collection of measured data, the parameters of the core monitoring module of the high-efficiency and energy-saving boiler are adjusted to achieve relative stability and control of combustion efficiency and carbon emission data, and then the combustion volume is collected to achieve penetrating refined management and accurate acquisition of carbon emission data in the industrial production and operation process, and reliable data.

Claims

1. The boiler combustion data accurate monitoring system is characterized by: The Internet of Things monitoring system includes: The code scanning and recognition module is used to scan the QR code and transmit the scanned code information to the data processing center; the data processing center is used to receive and decode the scanned code information, store the coal quality information and the coal usage of this batch, and receive the coal usage data transmitted by the coal usage monitoring module, and calculate the cumulative coal usage; The coal usage monitoring module monitors the coal usage in real time through a coal injection device equipped with a precise metering device and transmits the data to the data processing center; The control module is connected to the data processing center and the coal blowing device. When the data processing center determines that the cumulative coal usage reaches the coal usage of this batch, the control module controls the coal blowing device to shut down.

2. The boiler combustion data accurate monitoring system according to claim 1 is characterized by: The precise metering device comprises a metering device body, which comprises a metering cavity, a discharge port is arranged at the left end of the metering cavity, and a feed port is arranged at the upper part; a first push rod and a second push rod are movably arranged in the metering cavity; the first push rod is arranged on the left side of the feed port, and the second push rod is arranged on the right side of the feed port; the diameters of the first push rod and the second push rod match the tube diameter of the metering cavity; the first push rod and the second push rod are connected by a thin rod; the diameter of the thin rod is smaller than the diameter of the first push rod, thereby forming a quantitative storage cavity in the thin rod area; quantitative charging and quantitative discharging of materials are realized through the synchronous displacement of the first push rod and the second push rod in the metering cavity.

3. The boiler combustion data accurate monitoring system according to claim 1 is characterized in that: A guide rod is arranged on the left end side of the first push rod; a lead seat is arranged on the left end side of the metering device body, and the lead seat is provided with a lead hole corresponding to the guide rod; the guide rod is movably arranged in the lead hole; a material discharge cavity is reserved between the lead seat and the discharge port.

4. The boiler combustion data accurate monitoring system according to claim 1 is characterized by: The coal blowing device includes a blowing device, which is provided with a gas-powder mixing chamber; a coal blowing outlet is provided on one side of the upper part of the gas-powder mixing chamber; a rotating scattering disk is rotatably provided in the gas-powder mixing chamber, and the cross-sectional surface of the rotating scattering disk is U-shaped; a feeding pipe is provided above the center of the rotating scattering disk; and an air intake device is provided below the rotating scattering disk.

5. The boiler combustion data accurate monitoring system according to claim 4 is characterized in that: The air intake device is a truncated cone-shaped air blowing seat; the upper end of the truncated cone-shaped air blowing seat is connected to the rotating breaking disk through a bearing; the outer wall of the truncated cone-shaped air blowing seat is provided with a plurality of air outlet holes; an inner air cavity is provided on the inner side of the plurality of air outlet holes, and the inner air cavity is connected to an air intake pipe.

6. The boiler combustion data accurate monitoring system according to claim 4 is characterized by: The cross-sections of the rotating scattering disk and the truncated cone-shaped air blowing seat are in an M shape.

7. The boiler combustion data accurate monitoring system according to claim 4 is characterized by: The gas-powder mixing chamber is hemispherical or hemispherical.

8. The boiler combustion data accurate monitoring system according to claim 4 is characterized by: A conical cover is arranged above the rotating scattering disk, and a conical cavity is formed between the conical cover and the rotating scattering disk.

9. The boiler combustion data accurate monitoring system according to claim 8 is characterized in that: The outer periphery of the upper end of the conical cover is provided with a circle of arc surface rolled inward downward to form a deceleration chamber; the lower part of the deceleration chamber is provided with a powder outlet.

10. The boiler combustion data accurate monitoring system according to claim 9 is characterized in that: A cambered deceleration net is arranged in the deceleration chamber; the cambered deceleration net is arranged along the deceleration chamber in a circle.

11. The boiler combustion data accurate monitoring system according to claim 4 is characterized in that: The disc surface of the rotating scattering disc is provided with radial blades or arc-shaped convex bodies.

12. A carbon emission collection method, characterized in that: The method comprises using the boiler combustion data accurate monitoring system as claimed in any one of claims 1 to 11, and the steps are as follows: (1) The quality information of the target coal, such as the calorific value, sulfur content, ash content, moisture content, and the purchase quantity of this batch, is encoded to generate a QR code; (2) After the coal is ground into powder, it is passed into the coal blowing device, and the QR code is scanned by the code scanning and recognition module to start the coal blowing device and blow it into the boiler; (3) The precise metering device of the coal injection device performs precise metering and transmits the accumulated usage data to a data processing center; (4) Based on the actual measurement and accounting method of carbon emissions, the concentration of carbon dioxide in the flue gas is measured, that is, by evaluating the carbon emission pollution, and then adjusting and determining the parameters of the coal injection device for the purpose of reducing air pollution, the optimal pulverized coal-air ratio for the corresponding boiler of this batch of standard coal is obtained, so as to achieve high efficiency and energy saving of the boiler; (5) Calculate carbon emissions based on the quality information of the target coal batch combined with the current boiler combustion efficiency and the ambient temperature sensor and oxygen sensor data; (6) Based on the accumulated coal usage, the control module controls whether the coal blowing device is shut down, and calculates the accumulated carbon emissions based on the accumulated coal usage to obtain accurate carbon emission data.

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