Boiler combustion data precision monitoring system and carbon emission collection method

Abstract

The present application relates to high-efficiency energy-saving boiler and atmospheric pollution automatic monitoring technical field, specifically relates to boiler combustion data accurate monitoring system and carbon emission collection method, including internet of things monitoring system, the internet of things monitoring system includes: code scanning identification module, data processing center, coal consumption monitoring module, control module;Through the fuel is endowed with unique identification code-green code, when the cumulative coal consumption reaches the coal consumption of this batch, the control module controls the coal blowing device to stop. Based on the carbon emission measurement accounting method, install the continuous emission monitoring system at the emission source of industrial chimney, boiler and the like, through the measurement of carbon dioxide and other gas concentration in flue gas, combined with the flue gas flow data, according to the need, reliable adjustment is carried out to the amount of coal powder or air, the efficient energy saving and carbon emission reduction of boiler are realized, the penetrating fine management and accurate acquisition of carbon emission data in the process of industrial production operation are realized, and the data is reliable.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of high-efficiency energy-saving boiler and atmospheric pollution automatic monitoring, and particularly relates to a boiler combustion data accurate monitoring system and a carbon emission collection method. BACKGROUND

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

[0003] The current carbon emission monitoring technology mainly uses emission factors, raw material and fuel use data, and calculates the direct and indirect emission data of carbon dioxide and other greenhouse gases by using carbon balance theory. It has the shortcomings of human interference, large error, etc., and is easy to cause problems such as collusion between carbon emission organizations and third-party detection personnel, falsification of production records, interference with monitoring facilities, and failure to implement corresponding emission reduction requirements and atmospheric pollution prevention and control. For example, the difference in quality of different coal fuels is very obvious, mainly in economic cost and chemical composition, physical properties, etc. For example, high-quality coal usually has a high carbon content, generally more than 80%, such as anthracite, which has a carbon content of about 90%, and can provide higher calorific value, but the cost is also relatively higher. The quality of low-quality lignite is low, but the carbon content is only 60%-70%, and the sulfur content is also significantly higher; sulfur is a harmful element in coal, which will produce sulfur dioxide and other pollutants after combustion, causing serious pollution to the atmospheric environment. Generally, the sulfur content of high-quality coal is usually low, usually less than 1%, while the sulfur content of some low-quality coal can be as high as about 5%. At present, the coal combustion data collection is mostly collected manually on a regular basis, such as monthly or annual accounting, and sometimes the boiler uses high-quality coal powder during the adjacent inspection period for detection personnel to detect, and after detection, the low-quality coal powder is mixed or even directly replaced, which is difficult to monitor. This causes the monitoring to be unable to reflect the dynamic changes of boiler carbon powder quality combustion and carbon emissions and other pollutants in real time, and it is difficult to find emission abnormalities and optimize adjustments in a timely manner. The fundamental problem is that it is impossible to fundamentally achieve accurate and automatic monitoring of the quality of carbon powder used by each factory on a daily basis. SUMMARY

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

[0005] In order to achieve the above object, the present application adopts the following technical solutions:

[0006] The boiler combustion data accurate monitoring system comprises an Internet of Things monitoring system, wherein the Internet of Things monitoring system comprises:

[0007] The code scanning and identifying module is used for scanning a two-dimensional code and transmitting the code scanning information to the data processing center; the data processing center is used for receiving and decoding the code scanning information, storing the coal quality information and the coal consumption of the batch, receiving the coal consumption data transmitted by the coal consumption monitoring module, and calculating the cumulative coal consumption;

[0008] The coal consumption monitoring module is used for monitoring the coal consumption in real time through the coal blowing device provided with the accurate metering device, and transmitting the data to the data processing center;

[0009] The control module is connected with the data processing center and the coal blowing device, and when the data processing center judges that the cumulative coal consumption reaches the coal consumption of the batch, the control module controls the coal blowing device to stop.

[0010] Optionally, the accurate metering device comprises a metering device body, the metering device body comprises a metering cavity, the left end of the metering cavity is provided with a discharge port, and the upper portion is provided with a feeding port; the first push rod and the second push rod are movably arranged in the metering cavity; the first push rod is arranged on the left side of the feeding port, and the second push rod is arranged on the right side of the feeding port; the diameters of the first push rod and the second push rod match the pipe diameter of the metering cavity; the first push rod and the second push rod are connected through a thin rod; the diameter of the thin rod is smaller than the diameter of the first push rod, so as to form a quantitative storage cavity in the area of the thin rod; the quantitative feeding and quantitative discharging of the material are realized through the synchronous displacement of the first push rod and the second push rod in the metering cavity.

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

[0012] Optionally, the coal blowing device comprises a blowing device, the blowing device is provided with a gas-powder mixing cavity; the upper side of the gas-powder mixing cavity is provided with a coal blowing outlet; the rotating dispersing disc is rotatably arranged in the gas-powder mixing cavity, and the cross section of the rotating dispersing disc is in U shape; the center of the rotating dispersing disc is provided with a feeding pipe above; the lower side of the rotating dispersing disc is provided with an air inlet device.

[0013] Optionally, the air inlet device is a circular truncated cone-shaped air blowing seat; the upper end of the circular truncated cone-shaped air blowing seat is connected with the rotating dispersion disc through a bearing; the outer side wall of the circular truncated cone-shaped air blowing seat is provided with a plurality of air outlet holes; the inner side of the plurality of air outlet holes is provided with an inner air cavity, and the inner air cavity is communicated with an air inlet pipe.

[0014] Optionally, the rotating dispersion disc and the circular truncated cone-shaped air blowing seat are in M-shaped section.

[0015] Optionally, the air-powder mixing cavity is in a semi-spherical or semi-ellipsoidal shape.

[0016] Optionally, the upper side of the rotating dispersion disc is provided with a conical cover, and a conical cavity is formed between the conical cover and the rotating dispersion disc.

[0017] Optionally, the upper end of the conical cover is provided with a ring of downwardly inwardly curved surfaces, forming a speed reduction cavity; the lower part of the speed reduction cavity is provided with a powder outlet.

[0018] Optionally, an arc surface speed reduction net is arranged in the speed reduction cavity; the arc surface speed reduction net is arranged in a ring along the speed reduction cavity.

[0019] Optionally, radial blades or arc convex bodies are arranged on the disc surface of the rotating dispersion disc. A carbon emission collection method, characterized in that: a boiler combustion data accurate monitoring system as described above is used, and the steps are as follows:

[0020] (1) The quality information of the heat value, sulfur content, ash content, and water content of the target coal and the purchase quantity of the batch are encoded to generate a two-dimensional code;

[0021] (2) After the coal is ground, it is transmitted to the coal blowing device, the two-dimensional code is scanned by using a scanning code identification module, the coal blowing device is started, and the coal is blown into the boiler;

[0022] (3) The accurate measurement device of the coal blowing device performs accurate measurement, and the cumulative use amount data is transmitted to the data processing center;

[0023] (4) Based on the carbon emission measurement accounting method, the carbon dioxide concentration in the flue gas is measured, that is, the carbon emission pollution is evaluated, then the parameters of the coal blowing device are adjusted and determined for the purpose of reducing atmospheric pollution, the best coal powder-air ratio of the batch of standard coal corresponding to the boiler is obtained, and the boiler is realized high-efficiency and energy-saving;

[0024] (5) Based on the quality information of the batch of target coal, the carbon emission is calculated in combination with the current boiler combustion efficiency and the data of the environmental temperature sensor and the oxygen sensor.

[0025] (6) Based on the cumulative use of coal, whether the coal blowing device is stopped is controlled by the control module, and the cumulative carbon emission is calculated based on the cumulative use of coal, so as to obtain accurate carbon emission data.

[0026] Compared with the prior art, the present application has the following beneficial effects:

[0027] 1. The accurate metering device of the present application relies on the metering cavity as a quantitative metering chamber, and the single reciprocating coal powder discharge amount is constant. The metering only needs to collect the reciprocating frequency data of the reciprocating motor to realize accurate metering. The structure is accurate, stable and reliable in operation. By setting the code scanning and recognizing module, fuel coding is adopted.

[0028] 2. The conical cover and the rotating scattering disc form a relatively closed conical cavity, which can significantly reduce the influence of external airflow on the coal powder in the dispersed tumbling state, and is beneficial to maintaining the dispersion effect of the coal powder at a lower speed to prevent the coal powder, especially the light powder, from rolling due to the airflow. Maintain the stability of the conical cavity, improve the effective adjustable and controllable mixing ratio of the subsequent coal powder and air, thereby significantly improve the combustion efficiency of the industrial boiler, realize high-efficiency energy saving, reduce carbon emission, and reduce air pollution.

[0029] 3. Based on the carbon emission measurement and accounting method, 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 best coal powder-air ratio of the corresponding boiler matched with the standard coal of the batch. The key parameters of the equipment can be adjusted based on the measured data of atmospheric pollutants, which can significantly reduce the emission of boiler pollutants. BRIEF DESCRIPTION OF DRAWINGS

[0030] Figure 1 is a structural schematic view of the coal blowing device of the present application;

[0031] Figure 2 is a structural schematic view of the blowing device of the present application;

[0032] Figure 3 is Figure 2 a fluid motion schematic view;

[0033] Figure 4 is a structural schematic view of the accurate metering device of the present application;

[0034] Figure 5 is a principle schematic view of the present application for realizing the high-efficiency energy saving of the boiler and the penetrating fine management and accurate acquisition of the carbon emission data. DETAILED DESCRIPTION

[0035] The above is a detailed description of the present patent in conjunction with the specific embodiments, and cannot be regarded as limiting the specific embodiments of the present patent to the above description. For those of ordinary skill in the art to which the present patent belongs, without departing from the concept of the present patent, some alternatives or variations of the above-described embodiments can be made, which should be regarded as falling within the protection scope of the present patent. In the description of the present specification, in the present specification, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner. Those skilled in the art can combine and combine the different embodiments or examples described in the present specification and the features of the different embodiments or examples without contradicting each other. Although embodiments of the present application 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 the patent application.

[0036] The boiler combustion data accurate monitoring system comprises an Internet of Things monitoring system, the Internet of Things monitoring system comprising:

[0037] The code scanning and identifying module is used for scanning a two-dimensional code and transmitting the code scanning information to the data processing center.

[0038] The data processing center is used for receiving and decoding the code scanning information, storing the coal quality information and the use amount of the batch of coal, receiving the coal use amount data transmitted by the coal use amount monitoring module, and calculating the cumulative use amount of the coal.

[0039] The coal use amount monitoring module monitors the coal use amount in real time through the coal blowing device provided with the accurate metering device, and transmits the data to the data processing center.

[0040] The control module is connected with the data processing center and the coal blowing device, and when the data processing center judges that the cumulative use amount of the coal reaches the use amount of the batch of coal, the control module controls the coal blowing device to stop.

[0041] In the embodiment, a communication module is also provided, which can be connected with 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, the data transmission is more reliable and efficient through the support of such protocols.

[0042] To realize 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 boiler, the temperature in the boiler furnace, the temperature of the flue gas discharged from the boiler, the pressure in the furnace, etc., and the above data can be monitored by existing monitoring technology.

[0043] In this application, a technology for accurate measurement of pulverized coal and stable and reliable control of air mixing can be provided. Therefore, in this 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. The metering cavity is a horizontal cylindrical structure with openings at both ends. A discharge port is provided at the left end of the metering cavity, and a feed port 23 is provided at the upper part, which is beneficial to improving the smoothness of the falling of the coal powder; in this embodiment, the feed port 23 is provided 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 the feeding. A coal powder feed hopper 24 is provided 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 provided in the metering chamber; the first push rod 30 is provided on the left side of the feed port 23, and the second push rod 27 is provided 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 diameters 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 through 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 stop rod 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] To improve operational reliability, in this embodiment, a guide rod 21 is provided on the left end of the first push rod 30; a lead seat is provided on the left end of the metering device body 1-1, and a lead hole 20 is provided in the lead seat corresponding to the guide rod; the guide rod 21 is movably disposed within the lead hole 20; a feed cavity 22 is reserved between the lead seat and the discharge port. A dispersed feed hopper 31 is also provided below the feed cavity 22. In this embodiment, the right end of the second push rod 27 is driven to reciprocate via a drive rod 26. The right end of the drive rod 26 is connected to a reciprocating motor or telescopic cylinder via a flange 25. In this embodiment, the reciprocating motor or telescopic cylinder preferably has an adjustable reciprocating frequency.

[0045] By adopting the precise metering device, without precise sensors, without tedious periodic metering calibration in long-term use, the metering precision is high and the anti-interference ability is strong. If the traditional heavy sensor and flow sensor are used, the sensitivity will decrease in the use process of coal powder metering due to the use environment and other factors, and thus periodic calibration is required. Once the sensitivity decreases, it is not easy to be known in time, and thus the monitoring and collecting data will be inaccurate and uncontrollable. The precise metering device relies on the metering cavity 29 as a quantitative metering chamber, and the single reciprocating coal powder discharge amount is constant. The metering only needs to collect the reciprocating frequency data of the reciprocating motor to realize precise metering. The structure is accurate, stable and reliable in metering.

[0046] Optionally, the coal blowing device comprises a blowing device 1, which is provided with a gas-powder mixing cavity 10; one side of the upper part of the gas-powder mixing cavity 10 is provided with a coal blowing outlet 8; in this embodiment, in order to improve the smoothness of fluid flow, as shown in the drawing, the gas-powder mixing cavity 10 can be semispherical or semi-ellipsoidal. Figure 2 The lower part of the rotating dispersing disc 16 is provided with a rotating shaft 18, which is rotatably fixed to the bottom frame through a bearing 17; the rotating shaft 18 is driven to rotate by a centrifugal motor, which is preferably a variable frequency motor and is connected to the rotating shaft 18 in a direct drive manner in this embodiment; the cross section of the rotating dispersing disc 16 is U-shaped; the center of the rotating dispersing disc 16 is provided with a feeding pipe 9; the feeding pipe 9 is connected to the lower end of the dispersing feeding funnel 31; in this embodiment, the feeding pipe 9 is vertically arranged and penetrates into the top of the gas-powder mixing cavity 10 and is fixedly connected to the top of the gas-powder mixing cavity 10; the lower part of the rotating dispersing disc 16 is provided with a circular truncated cone-shaped gas blowing seat 3; the upper end of the circular truncated cone-shaped gas blowing seat 3 is connected to the rotating dispersing disc 16 through a bearing (preferably a sealed bearing 13); in this embodiment, the lower end diameter of the circular truncated cone-shaped gas blowing seat 3 is greater than the upper end diameter of the rotating dispersing disc 16, thereby forming an M-shaped cross section as shown in the drawing. Figure 2 The cross section of the rotating dispersing disc 16 and the circular truncated cone-shaped gas blowing seat 3 is M-shaped; the structure has the following effects: as shown in the drawing, Figure 3As shown, in the present embodiment, the pulverized coal is scattered, falls from the upper part of the rotating scattering disc 16, and is then blown obliquely upward by the circular truncated cone-shaped air blowing seat 3 on the circular truncated cone surface, so as to promote the full mixing of the pulverized coal and air, and the pulverized coal can be more smoothly and fully blown to the upper part of the gas-powder mixing chamber 10, thereby realizing the timely and sufficient discharge of the air-pulverized coal mixture from the coal blowing outlet 8, which can reduce the influence on the subsequent proportional mixing of the pulverized coal and air. At the same time, the circular truncated cone-shaped air blowing seat 3 can provide a better and more uniform gas-powder contact environment for the pulverized coal falling from the top of the circular rotating scattering disc 16, which can significantly improve the uniformity of the gas-powder mixing, which is one of the main means to realize the high efficiency and energy saving of the boiler, and to realize the carbon emission reduction and controllable and accurate collection.

[0047] As shown in Figure 2 The outer side wall of the circular truncated cone-shaped air blowing seat 3 is provided with a plurality of air outlets 2; the inner side of the plurality of air outlets 2 is provided with an inner air cavity 2-1, the inner air cavity 2-1 is provided with an air inlet 15, the air inlet 15 is communicated with an air inlet pipe 14, and the air inlet pipe 14 is provided with an air flow meter and a control valve.

[0048] In the present embodiment, the rotating scattering disc 16 is mainly used to disperse the pulverized coal sent out by the precise metering device, and the preferred scheme is as follows: the inclination of the rotating scattering disc 16 can be selected to be about 30°, and for example, according to the common industrial coal pulverized coal, most of the powder is distributed in the range of 20-100 μm, so the centrifugal motor speed of the present embodiment can be selected to be 130-180 revolutions per minute, the purpose of which is to reduce the speed of the pulverized coal thrown out of the rotating scattering disc 16, that is, the rotating scattering disc 16 only needs to play a dispersing role, and reducing the speed of the pulverized coal thrown out is beneficial to the mixing effect of the air flow and the pulverized coal of the circular truncated cone-shaped air blowing seat 3 and the effective and timely discharge of the air-pulverized coal mixture. In order to reduce the disturbance of the air flow to the pulverized coal in the centrifugal dispersion process of the rotating scattering disc 16, in the present embodiment, as shown in Figure 2As shown, the upper part of the rotating dispersing disc 16 is provided with a conical cover 4, the outer periphery of the upper end of the conical cover 4 is provided with a circle of downwardly inwardly curled arc surface, that is, the cross section is inclined U-shaped, to form a speed reduction cavity 6; the lower part of the speed reduction cavity 6 is provided with a powder outlet 5. The conical cover 4 is connected with the lower end of the feeding pipe 9; in order to improve the stability, a plurality of reinforcing rods 7 can also be provided on the outer periphery of the conical cover 4. The effect of this structure is: 1. The conical cover 4 and the rotating dispersing disc 16 form a relatively closed conical cavity, at this time, the construction of the closed conical cavity can significantly reduce the influence of the airflow outside the conical cavity on the coal powder in the dispersion rolling, which is beneficial 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 disturbance of airflow fluctuation. If the powder rolls, it will reduce the effect of the controllable proportioning of the coal powder feeding amount and the input air flow in the later stage and the proportioning stability control effect. That is, to ensure that the dispersed powder in the rotating dispersing disc 16 can be output to the upper part of the plurality of air outlets 2 of the circular table-shaped air blowing seat 3 in a certain amount, fully and stably in unit time, to ensure that the air outlet amount (adjustable) of the plurality of air outlets 2 in unit time is mixed in a stable proportion, to improve the controllability and adjustable accuracy of the mixing proportion of the powder amount and the air amount in unit time (to improve the combustion efficiency, the appropriate mixing proportion of the powder amount and the air amount needs to be matched according to the physical properties of the boiler model, environmental temperature, carbon content of each batch of standard coal, etc., and the stability of the equipment control of the proportion directly affects the combustion efficiency and carbon emission amount). 2. The design of the speed reduction cavity 6 can slow down and guide the dispersed powder, so as to make the powder tend to naturally fall downward to the upper part of the plurality of air outlets 2, that is, if the speed reduction cavity 6 is reduced, the powder contains outward centrifugal force when it is thrown out, then when the powder mixes with air, it will be affected by the centrifugal force of the powder, thereby affecting the controllability of the powder and air mixing, and affecting the stability and accuracy of the subsequent proportioning regulation of the coal powder and air flow.

[0049] At the same time, because the actual crushed coal powder contains light powder below 45 μm and part of heavy powder above 45 μm, in order to improve the falling smoothness of the powder after being dispersed by the rotating dispersing disc 16 and reduce the backflow of light powder into the conical cavity, in this embodiment, an arc surface speed reduction net 12 is further arranged in the speed reduction cavity; the arc surface speed reduction net is arranged in a circle along the speed reduction cavity.

[0050] In order to reduce the influence of airflow outside the conical cavity on the feeding and dispersion process and improve the stability of the feeding and dispersion process, in this embodiment, radial blades or arc convex bodies 19 can be preferably arranged on the disc surface of the rotating dispersing disc 16, and the arc convex bodies 19 can be preferably arranged on the lower part or middle part or upper part of the disc surface. The purpose is to prevent the airflow outside the conical cavity from backflowing into the conical cavity, and even to form a micro air flow from the feeding pipe 9 to the upper end of the rotating dispersing disc 16.

[0051] In use, the coal blowing device can be regulated in the following parameters in combination with other relevant combustion data of the combustion furnace or exhaust emission concentration data, etc. to adjust the coal-air ratio blown out of the coal blowing outlet 8; for example, by installing a continuous emission monitoring system (CEMS) at the emission source of an industrial chimney, a boiler, etc. based on a carbon emission measurement accounting method, the concentration of gases such as carbon dioxide (CO2), carbon monoxide (CO), sulfur dioxide (SO2), nitrogen oxides (NOx), etc. in the flue gas is measured by technologies such as infrared spectroscopy, ultraviolet spectroscopy, laser absorption spectroscopy, etc. (different environmental temperatures in winter and summer will also have an impact, so the control reference value / set value of the key parameters of the device can be determined through experiments in different air temperature environments), the carbon emission flux is calculated in combination with the flue gas flow data, and the amount of coal powder and air is adjusted as needed; the feeding speed of the coal powder can be regulated by adjusting the reciprocating frequency of the reciprocating motor as needed; the powder amount per unit time before the coal powder is mixed with air can be regulated by adjusting the rotating speed of the centrifugal motor; and the mixing ratio of the coal powder and air and the mixing effect can be realized by regulating the air inlet pressure or air inlet flux of the air inlet pipe 14, thereby realizing high-precision metering, dispersion and controllable and stable adjustment of the ratio of the coal powder and air. By realizing stable and adjustable feeding ratio of the combustion, the related equipment parameters of the best combustion efficiency of the batch (standard coal) in the boiler (the boiler model is different for each plant) can be determined (determined in combination with the carbon emission measurement accounting data), so as to improve the combustion efficiency of the boiler, realize high-efficiency energy saving of the boiler and reduce the carbon dioxide emission.

[0052] In some embodiments, the following scheme can also be used: the air inlet pipe 14 is not connected to positive air pressure, but directly uses atmospheric pressure, and then a Venturi tube material port is connected at the coal blowing outlet 8, and the uniform gas-powder mixture at the coal blowing outlet 8 is adsorbed by the negative pressure action of the Venturi tube, and then blown into the boiler by the Venturi tube. Since the material provided by the coal blowing outlet 8 can provide a stable proportion of gas-powder mixture, the proportion of the gas-powder mixture blown into the boiler after the action of the Venturi tube can also be relatively stable, which is beneficial to the regulation / maintenance of the better combustion efficiency and the prevention of insufficient combustion affecting the controllability of the carbon emission. This is another specific feeding implementation mode that can realize high-efficiency energy saving of the boiler and reduce the carbon dioxide emission.

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

[0054] (1) The quality information of the calorific value, sulfur content, ash content and moisture content of the target coal and the purchase quantity of the batch are encoded to generate a two-dimensional code; that is, the information two-dimensional code provided by the coal supplier;

[0055] (2) After the coal is ground, it is transmitted to the coal blowing device, the two-dimensional code is scanned by using the code scanning identification module, the coal blowing device is started, and the coal is blown into the boiler; in this embodiment, as shown in Figure 1 the precision metering device is connected above the blowing device 1 through the feeding pipe 9, that is, it is integrated as a whole, and in the traditional scheme, after the powder is scattered, it is conveyed to the metering device through the conveying belt, and then it is conveyed through the conveying belt or air-sent through the long pipe to the blowing device (generally a coal powder spray gun), and then it is sprayed into the boiler by the coal powder spray gun. This scheme brings great uncertainty to supervision. Some factories can directly mix low-quality coal powder in the conveying device between the metering device and the blowing device in order to reduce costs, that is, low-quality coal powder is not metered by the metering device, or low-quality coal powder seeps in due to inaccurate metering of the related sensing modules of the metering device. At the same time, if the continuous accuracy and controllability of metering cannot be ensured, the code scanning quantitative scheme cannot be popularized. The high integration of the precision metering device and the blowing device in the device can significantly reduce the mixing of low-quality coal powder in the supervision process. At the same time, the high precision and high reliability of the operation of the precision metering device effectively prevent the metering from being inaccurate due to equipment failure. At the same time, the operation parameters of the reciprocating motor and the centrifugal motor of the precision metering device are matched and controlled, which directly affects the combustion efficiency. At the same time, the operation of the reciprocating motor is controlled by the cumulative feeding amount of the two-dimensional code information, which significantly reduces the possibility of fraud, and can realize the accurate use and reliable monitoring of various quality coals. Through the use of batch coal information and other conventional data monitoring, higher accuracy of carbon emission monitoring can be realized.

[0056] (3) The precision metering device of the coal blowing device performs precision metering, and transmits the cumulative use amount data to a data processing center;

[0057] (4) Based on the carbon emission measurement and accounting method, a continuous emission monitoring system (CEMS) is installed at an emission source such as an industrial chimney or a boiler. Through infrared spectroscopy, ultraviolet spectroscopy, laser absorption spectroscopy and other technologies, the concentrations of carbon dioxide (CO2), carbon monoxide (CO), sulfur dioxide (SO2), nitrogen oxides (NOx) and other gases in the flue gas are measured in real time, that is, the carbon emission pollution is evaluated, and then the parameters of the equipment are controlled and adjusted for the purpose of reducing atmospheric pollution, such as: combining the flue gas flow data, calculating the carbon emission flux, adjusting the amount of coal powder or air as needed, determining the optimal reciprocating motor and centrifugal motor, air flow, and other key parameters in the combustion environment, obtaining the optimal combustion efficiency of the batch standard coal in the corresponding temperature environment in the boiler, improving the combustion efficiency, reducing incomplete combustion, realizing high-efficiency energy saving of the boiler, and reducing carbon emissions;

[0058] (5) Based on the quality information of the target coal in this batch, combined with the current boiler combustion efficiency and data such as environmental temperature sensor and oxygen sensor, the carbon emission is calculated;

[0059] (6) Based on the cumulative use amount of coal, whether the coal blowing device is stopped is controlled by the control module, because the quality and combustion characteristics of each batch of coal (standard coal) and the combustion efficiency of the adopted boiler are relatively fixed, and it is difficult to mix the quality of coal by relying on the accurate measurement of the device, therefore, the cumulative carbon emission can be calculated based on the cumulative use amount of coal, and accurate carbon emission data can be obtained.

[0060] As Figure 5 shown, it is the principle diagram of realizing the penetrating fine management and accurate acquisition of carbon emission data of the high-efficiency energy-saving boiler, that is, through coding identification, control and management of fuel, and through the collection of measured data at the equipment level, the best regulation and control of the gas-powder mixture ratio are realized to achieve the purpose of high-efficiency energy-saving boiler; and in the collection and monitoring of carbon emission data, the clear coal fuel quality information and the Internet of Things identification, accurate recording and control are ensured to realize the accurate control of the original fuel affecting carbon emission, based on the collection of measured data, through the parameter regulation and control of the high-efficiency energy-saving boiler core monitoring module, the relative stable and controllable combustion efficiency and carbon emission data are realized, then the combustion amount is collected, the penetrating fine management and accurate acquisition of carbon emission data in the process of industrial production and operation are realized, and the data is reliable.

Claims

1. The boiler combustion data accurate monitoring system is characterized by: The Internet of Things monitoring system includes: Scanning code recognition module, 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, receive the coal usage data transmitted by the coal usage monitoring module, and calculate the cumulative coal usage; The coal usage monitoring module monitors 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; The precise metering device includes a metering device body, which includes a metering cavity, a discharge port is provided at the left end of the metering cavity, and a feed port is provided at the upper portion thereof; 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 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 achieved through the synchronous displacement of the first push rod and the second push rod in the metering cavity; 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; The coal blowing device includes a blowing device, which is provided with an air-powder mixing chamber; a coal blowing outlet is provided on one side of the upper portion of the air-powder mixing chamber; a rotating scattering disk is rotatably provided in the air-powder mixing chamber, and the cross-section 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; The air inlet 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 scattering disk through a bearing; the outer wall of the truncated cone-shaped air blowing seat is provided with a plurality of air outlet holes; the inner side of the plurality of air outlet holes is provided with an inner air cavity, and the inner air cavity is connected to the air inlet pipe; The cross-sections of the rotating scattering disc and the frustum-shaped air blowing seat are M-shaped.

2. The boiler combustion data precision monitoring system according to claim 1 is characterized by: The gas-powder mixing chamber is hemispherical or hemispherical.

3. The boiler combustion data precision monitoring system according to claim 1 is characterized by: 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.

4. The boiler combustion data precision monitoring system according to claim 3 is characterized by: The outer periphery of the upper end of the conical cover is provided with a circle of downwardly rolled inward arc surface to form a deceleration chamber; the lower part of the deceleration chamber is provided with a powder outlet.

5. The boiler combustion data precision monitoring system according to claim 4 is characterized in that: A cambered deceleration net is provided in the deceleration cavity; the cambered deceleration net is arranged in a circle along the deceleration cavity.

6. The boiler combustion data precision monitoring system according to claim 1 is characterized by: The disc surface of the rotating scattering disc is provided with radial blades or arc-shaped convex bodies.

7. A carbon emission collection method, characterized in that: The method comprises using the boiler combustion data precision monitoring system according to any one of claims 1 to 6, and the steps are as follows: The calorific value, sulfur content, ash content, moisture content and the quality information of the target coal and the purchase quantity of this batch are encoded to generate a QR code; After the coal is ground into powder, it is fed 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; The coal injection device is used to accurately measure the coal and transmit the accumulated usage data to the data processing center; Based on the carbon emission measurement and calculation method, the carbon dioxide concentration in the flue gas is measured. That is, by evaluating carbon emission pollution, the parameters of the coal injection device are adjusted and determined with the goal of reducing air pollution. The optimal coal-to-air ratio for the corresponding boiler is obtained to match the current batch of standard coal, thereby achieving high efficiency and energy saving of the boiler. Calculate carbon emissions based on the quality information of the target coal batch, combined with the current boiler combustion efficiency and data from the ambient temperature sensor and oxygen sensor; The control module controls whether the coal blowing device is shut down based on the cumulative coal usage, and calculates the cumulative carbon emissions based on the cumulative coal usage to obtain accurate carbon emission data.

Images