CN112834566A - Heat value measuring system for slag - Google Patents
Heat value measuring system for slag Download PDFInfo
- Publication number
- CN112834566A CN112834566A CN202110003638.0A CN202110003638A CN112834566A CN 112834566 A CN112834566 A CN 112834566A CN 202110003638 A CN202110003638 A CN 202110003638A CN 112834566 A CN112834566 A CN 112834566A
- Authority
- CN
- China
- Prior art keywords
- slag
- calorific value
- mass content
- coal
- moisture
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 239000002893 slag Substances 0.000 title claims abstract description 134
- 238000001514 detection method Methods 0.000 claims abstract description 44
- 229910052729 chemical element Inorganic materials 0.000 claims abstract description 29
- 238000005259 measurement Methods 0.000 claims abstract description 19
- 238000004364 calculation method Methods 0.000 claims abstract description 16
- 239000003245 coal Substances 0.000 claims description 82
- 238000005070 sampling Methods 0.000 claims description 13
- 238000011084 recovery Methods 0.000 claims description 12
- 238000001035 drying Methods 0.000 claims description 10
- 238000000034 method Methods 0.000 claims description 8
- 230000008569 process Effects 0.000 claims description 8
- 238000003756 stirring Methods 0.000 claims description 6
- 238000010438 heat treatment Methods 0.000 claims description 4
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims description 3
- 229910052799 carbon Inorganic materials 0.000 claims description 3
- 238000010298 pulverizing process Methods 0.000 claims 2
- 238000002485 combustion reaction Methods 0.000 description 68
- 239000010881 fly ash Substances 0.000 description 43
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 7
- 230000008859 change Effects 0.000 description 6
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 description 5
- 229910052739 hydrogen Inorganic materials 0.000 description 5
- 239000001257 hydrogen Substances 0.000 description 5
- 230000005611 electricity Effects 0.000 description 4
- 239000007787 solid Substances 0.000 description 4
- 230000003068 static effect Effects 0.000 description 4
- 239000000126 substance Substances 0.000 description 4
- 238000010586 diagram Methods 0.000 description 3
- 238000013178 mathematical model Methods 0.000 description 3
- 238000007789 sealing Methods 0.000 description 3
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 2
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical group O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 description 2
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- NINIDFKCEFEMDL-UHFFFAOYSA-N Sulfur Chemical compound [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 description 2
- RAHZWNYVWXNFOC-UHFFFAOYSA-N Sulphur dioxide Chemical group O=S=O RAHZWNYVWXNFOC-UHFFFAOYSA-N 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 2
- 239000007789 gas Substances 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 239000002245 particle Substances 0.000 description 2
- 230000003595 spectral effect Effects 0.000 description 2
- 229910052717 sulfur Inorganic materials 0.000 description 2
- 239000011593 sulfur Substances 0.000 description 2
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 description 1
- 239000002956 ash Substances 0.000 description 1
- 229910002092 carbon dioxide Inorganic materials 0.000 description 1
- 239000001569 carbon dioxide Substances 0.000 description 1
- 230000005281 excited state Effects 0.000 description 1
- 239000003546 flue gas Substances 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 238000009776 industrial production Methods 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 230000003189 isokinetic effect Effects 0.000 description 1
- 230000007935 neutral effect Effects 0.000 description 1
- 229910052757 nitrogen Inorganic materials 0.000 description 1
- 238000010248 power generation Methods 0.000 description 1
- 238000003860 storage Methods 0.000 description 1
Images
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N25/00—Investigating or analyzing materials by the use of thermal means
- G01N25/20—Investigating or analyzing materials by the use of thermal means by investigating the development of heat, i.e. calorimetry, e.g. by measuring specific heat, by measuring thermal conductivity
- G01N25/22—Investigating or analyzing materials by the use of thermal means by investigating the development of heat, i.e. calorimetry, e.g. by measuring specific heat, by measuring thermal conductivity on combustion or catalytic oxidation, e.g. of components of gas mixtures
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N1/00—Sampling; Preparing specimens for investigation
- G01N1/28—Preparing specimens for investigation including physical details of (bio-)chemical methods covered elsewhere, e.g. G01N33/50, C12Q
- G01N1/286—Preparing specimens for investigation including physical details of (bio-)chemical methods covered elsewhere, e.g. G01N33/50, C12Q involving mechanical work, e.g. chopping, disintegrating, compacting, homogenising
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N1/00—Sampling; Preparing specimens for investigation
- G01N1/28—Preparing specimens for investigation including physical details of (bio-)chemical methods covered elsewhere, e.g. G01N33/50, C12Q
- G01N1/38—Diluting, dispersing or mixing samples
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N1/00—Sampling; Preparing specimens for investigation
- G01N1/28—Preparing specimens for investigation including physical details of (bio-)chemical methods covered elsewhere, e.g. G01N33/50, C12Q
- G01N1/44—Sample treatment involving radiation, e.g. heat
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N21/00—Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
- G01N21/84—Systems specially adapted for particular applications
Landscapes
- Chemical & Material Sciences (AREA)
- General Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Health & Medical Sciences (AREA)
- Analytical Chemistry (AREA)
- Biochemistry (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Immunology (AREA)
- Pathology (AREA)
- Engineering & Computer Science (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Combustion & Propulsion (AREA)
- Investigating, Analyzing Materials By Fluorescence Or Luminescence (AREA)
Abstract
The application discloses calorific value measurement system of slag. The calorific value measurement system includes: high energy pulse laser total element check out test set, moisture meter and calorific value calculation equipment, wherein: the high-energy pulse laser all-element detection equipment is used for measuring the mass content of each chemical element in the slag; the moisture tester is used for measuring the mass content of moisture in the slag; and the heat value calculation device is used for calculating the heat value of the slag according to the mass content of the moisture in the slag and the mass content of each chemical element. The calorific value in the slag can thus be calculated by the calorific value measurement system.
Description
Technical Field
The application relates to the technical field of coal-fired boilers, in particular to a heat value measuring system for furnace slag.
Background
In the fields of industrial production, thermal power generation, and the like, coal-fired boilers are generally used in large quantities to burn coal to provide heat. Therefore, it is important to control the efficiency of heat utilization in the coal burning process of the coal-fired boiler, and based on this, the calorific value of the coal combustion product needs to be measured.
Disclosure of Invention
The embodiment of the application provides a system for measuring the calorific value of slag.
The embodiment of the application provides a calorific value measurement system of slag, it includes: high energy pulse laser total element check out test set, moisture meter and calorific value calculation equipment, wherein:
the high-energy pulse laser all-element detection equipment is used for measuring the mass content of each chemical element in the slag;
the moisture tester is used for measuring the mass content of moisture in the slag;
and the heat value calculation device is used for calculating the heat value of the slag according to the mass content of the moisture in the slag and the mass content of each chemical element.
Preferably, the calorific value measurement system further comprises a slag transport belt installed at a slag outlet of the coal-fired boiler, for transporting the slag to the high-energy pulsed laser all-element detection apparatus and the moisture meter.
Preferably, the slag conveying belt comprises a slag main conveying belt and a slag sampling belt, wherein the slag sampling belt is connected to the slag main conveying belt; and the number of the first and second groups,
the slag sampling belt is used for conveying the slag to the high-energy pulse laser all-element detection equipment and the moisture tester.
Preferably, the heat value measuring system further comprises a drying device for drying the slag conveyed to the high-energy pulse laser all-element detection equipment; then the process of the first step is carried out,
the high-energy pulse laser all-element detection equipment is used for measuring the mass content of each chemical element in the dried slag.
Preferably, the heat value measuring system further comprises a slag crushing and stirring device, which is used for crushing and stirring the dried slag; then the process of the first step is carried out,
the high-energy pulse laser all-element detection equipment is used for measuring the mass content of each chemical element in the dried, crushed and stirred slag.
Preferably, the calorific value calculation device further comprises a display module for displaying the calculated calorific value of the slag.
Preferably, the display module is configured to generate a slag calorific value change curve according to the calculated calorific value of the slag and a historical calorific value of the slag, and display the slag calorific value change curve.
Preferably, the heat value measuring system further includes: the recovery controller is used for controlling the slag recovery device to recover the slag when the calculated heat value of the slag is larger than a preset threshold value.
Preferably, the heat value measuring system further includes: and the alarm system is used for sending an alarm through the alarm system when the calculated heat value of the slag is larger than a preset threshold value.
Preferably, the alarm system specifically includes: a voice alert system.
The embodiment of the application adopts at least one technical scheme which can achieve the following beneficial effects:
by adopting the heat value measuring system of the slag provided by the embodiment of the application, because the slag usually contains various chemical components which are not completely combusted, the mass content of various chemical elements in the slag can be measured by high-energy pulse laser full-element detection equipment in the heat value measuring system, the mass content of water in the slag can be measured by a moisture determinator in the heat value measuring system, and finally, the heat value of the slag can be calculated based on the two measurement results by heat value calculating equipment in the heat value measuring system. Generally, the higher the calorific value, the less complete the combustion of coal in the coal-fired boiler and the lower the efficiency of heat utilization in the combustion process of coal, and the lower the calorific value, the more complete the combustion of coal in the coal-fired boiler and the higher the efficiency of heat utilization in the combustion process of coal. Therefore, based on the heat value, the operation adjustment of operators of the coal-fired boiler can be guided, and the heat utilization efficiency of the coal-fired boiler in the coal combustion process is improved.
Drawings
The accompanying drawings, which are included to provide a further understanding of the application and are incorporated in and constitute a part of this application, illustrate embodiment(s) of the application and together with the description serve to explain the application and not to limit the application. In the drawings:
FIG. 1 is a schematic diagram of a specific structure of a system for measuring a calorific value of a coal combustion product according to an embodiment of the present disclosure;
fig. 2 is a schematic structural diagram of another system for measuring a calorific value of a coal combustion product according to an embodiment of the present application.
Detailed Description
In order to make the objects, technical solutions and advantages of the present application more apparent, the technical solutions of the present application will be described in detail and completely with reference to the following specific embodiments of the present application and the accompanying drawings. It should be apparent that the described embodiments are only some of the embodiments of the present application, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.
The technical solutions provided by the embodiments of the present application are described in detail below with reference to the accompanying drawings.
As described above, controlling the utilization efficiency of heat in the coal burning process of the coal-fired boiler is crucial, and based on this application, the embodiment provides a heat value measurement system for coal burning products, which can be used for measuring the heat values of coal burning products such as fly ash and slag, thereby facilitating the control of the coal burning process in the coal-fired boiler and being beneficial to improving the utilization efficiency of heat.
Fig. 1 is a schematic diagram showing a specific structure of the heat value measuring system, which includes a high-energy pulse laser all-element detecting device 1, a moisture meter 2, and a heat value calculating device 3, wherein: the high-energy pulse laser all-element detection equipment 1 can be used for measuring the mass content of each chemical element in the coal combustion product; the moisture tester can be used for measuring the mass content of moisture in the coal combustion products; and the heat value calculation device can be used for calculating the heat value of the coal combustion product according to the mass content of the moisture in the coal combustion product and the mass content of each chemical element in the coal combustion product. The coal combustion products are produced by the combustion of coal by coal-fired boiler a, which typically includes fly ash, slag, and the like.
For example, when the coal combustion product is slag, the high-energy pulse laser full-element detection device 1 can measure the mass content of each chemical element in the slag. According to different coal types, chemical elements in coal combustion products can generally comprise sulfur elements, carbon elements, nitrogen elements, iron elements and the like, when the high-energy pulse laser all-element detection device 1 measures the mass content of the chemical elements in slag, the working principle is that pulse laser with high energy density is excited on the coal combustion products, the coal combustion products at a focus position generate high-temperature and high-density plasma due to ionization, when the plasma is cooled, atoms in an excited state spontaneously jump from high energy level to low energy level and generate characteristic spectral lines with corresponding wavelengths, and therefore the mass content of the chemical elements in the coal combustion products can be measured by collecting and analyzing spectral signals.
Of course, when the coal combustion product is fly ash or other products, the mass content of each chemical element in the coal combustion product can also be measured by the high-energy pulse laser all-element detection device 1.
In practical applications, the mass content of each chemical element in the coal combustion product can be measured periodically (for example, every hour, 20 minutes or other periods) or in real time through the high-energy pulsed laser all-element detection apparatus 1.
The moisture meter 2 may also perform measurement periodically or in real time when measuring the mass content of moisture in the coal combustion product. For example, the moisture meter 2 measures the mass content of moisture in the slag or fly ash in real time.
The calorific value calculation device 3 is connected with the moisture meter 2 and the high-energy pulse laser all-element detection device 1, so that the mass content of each chemical element in the coal combustion product measured by the high-energy pulse laser all-element detection device 1 can be obtained, the mass content of moisture in the coal combustion product measured by the moisture meter 2 can also be obtained, and the calorific value of the coal combustion product is calculated further based on the mass content of each chemical element in the coal combustion product and the mass content of moisture in the coal combustion product.
Among them, the calorific value is a characteristic of a substance (coal combustion product) which reflects the amount of heat released after 1 kg of the substance is completely combusted. For example, the calorific value of the coal combustion product reflects the amount of heat released after 1 kg of the coal combustion product is further completely combusted.
The coal-fired boiler a usually contains various chemical components that are not completely combusted in the coal combustion product obtained by combusting coal, for example, the product obtained by completely combusting carbon element is carbon dioxide gas, the product obtained by completely combusting sulfur element is sulfur dioxide gas, and the product obtained by completely combusting hydrogen element is water, so that the mass content of various chemical elements in the coal combustion product can be measured, the mass content of water can be measured, and the calorific value of the coal combustion product can be calculated by combining the mass content of various chemical elements and the mass content of water. When the heat value is higher, the more incomplete the combustion of the coal in the coal-fired boiler A is, the lower the utilization efficiency of heat in the coal combustion process is; conversely, a lower calorific value indicates that the more complete the combustion of coal in the coal-fired boiler A, the more efficient the utilization of heat during the combustion of coal.
When the heat value calculation device 3 calculates the heat value of the coal combustion product according to the mass content of each chemical element in the coal combustion product and the mass content of the moisture in the coal combustion product, firstly, the mass of the moisture in 1 kg of the coal combustion product is calculated according to the mass content of the moisture in the coal combustion product, the mass is deducted (because the water is a product obtained by completely combusting the hydrogen element), then, the heat quantity released by the completely combusting elements is calculated respectively according to the mass content of each chemical element, and finally, the heat value of the coal combustion product is calculated. In order to calculate the calorific value of the coal combustion product, a mathematical model may be established in advance, and the input amount of the mathematical model is the mass content of each chemical element and the mass content of the moisture, and the mathematical model outputs the calorific value after receiving the input amount.
In practical application, in order to facilitate conveying the coal combustion products to the high-energy pulse laser all-element detection device 1 and the moisture meter 2 for corresponding measurement, different conveying modes can be adopted according to the characteristics of different coal combustion products. For example, as shown in fig. 1, when the coal combustion product is slag, since slag is a settled solid, a slag conveyor belt 4 may be installed at a slag outlet a1 of the coal-fired boiler a, and the slag conveyor belt 4 may be connected to the high-energy pulse laser all-element detection device 1 and the moisture meter 2, so that slag is conveyed to the high-energy pulse laser all-element detection device 1 and the moisture meter 2 through the slag conveyor belt 4.
In addition, as for the specific structure of the slag transport belt 4, it may include a slag main transport belt and a slag sampling belt, and the slag main transport belt is mainly used for transporting a large amount of slag, such as transporting a large amount of slag to a slag storage point. The slag sampling belt is connected with the main slag conveying belt, so that a small amount of slag can be obtained from the main slag conveying belt and is used as a detection sample, the slag sampling belt can be connected with the high-energy pulse laser all-element detection device 1 and the moisture tester 2, and the small amount of slag obtained by sampling the slag sampling belt is conveyed to the high-energy pulse laser all-element detection device 1 and the moisture tester 2 to be correspondingly detected.
When the coal combustion product is fly ash, the fly ash usually floats in the air, so in order to convey the fly ash to the high-energy pulse laser all-element detection device 1 and the moisture meter 2 for corresponding measurement, a fly ash constant velocity sampler 5 is usually added in the coal-fired boiler a, and a sample outlet of the fly ash constant velocity sampler 5 is connected with the high-energy pulse laser all-element detection device 1 and the moisture meter 2, so that the collected fly ash is conveyed to the high-energy pulse laser all-element detection device 1 and the moisture meter 2.
In addition, since the fly ash is light in weight, in order to prevent the fly ash from being blown away by wind during the transportation of the fly ash, the fly ash constant velocity sampler 5 can connect the fly ash constant velocity sampler 5 with the high-energy pulse laser all-element detection apparatus 1 and the moisture meter 2 through the fly ash transportation pipe 6, so that the fly ash collected by the fly ash constant velocity sampler 5 can be transported to the high-energy pulse laser all-element detection apparatus 1 and the moisture meter 2 through the fly ash transportation pipe 6. Of course, it is also possible to contain fly ash in a container such as a sampling bottle from the sample outlet of the ash isokinetic sampler 5, and then convey the container such as the sampling bottle to the high-energy pulse laser all-element detection device 1 and the moisture meter 2 by means of belt conveyance or the like.
In addition, because the fly ash is usually charged with static electricity during the collection and transportation process of the fly ash, and is attached to the fly ash conveying pipe 6, a static electricity removing device can be arranged in the fly ash conveying pipe 6, so that the probability of attaching the fly ash to the fly ash conveying pipe 6 is reduced. In practical applications, the static electricity removing device may be a ground neutral line for grounding the fly ash conveying pipe 6, or may be another static electricity device.
Regarding the position where the fly ash isovelocity sampler 5 is installed, it is generally possible to install the fly ash isovelocity sampler 5 downstream of the economizer a2 (specifically, downstream in the flue gas flow direction) in the coal-fired boiler a, and since the economizer a2 is generally selected near the boiler back flue A3 of the coal-fired boiler a, it is easier to collect fly ash by installing the fly ash isovelocity sampler 5 downstream of the economizer a 2.
Since the product of complete combustion of hydrogen element is water, in order to further reduce the influence of moisture in the product of combustion of coal on the mass content of each chemical element, for example, when the high-energy pulse laser all-element detection device 1 measures the mass content of each chemical element in slag or fly ash, the mass content of hydrogen element is also measured due to water contained therein, thereby influencing the subsequent heat value calculation result. Therefore, a drying device can be further added in the heat value measuring system, so that the coal combustion product is dried, the moisture content in the coal combustion product is reduced, and the dried coal combustion product is conveyed to the high-energy pulse laser all-element detection device 1 for measurement. Therefore, as the moisture in the coal combustion product is dried by the drying device, the interference of hydrogen elements in the moisture is reduced when the mass content of each chemical element is measured.
The drying device is usually set at different positions for different coal combustion products, for example, when the coal combustion product is slag, the drying device may be set at the connection between the slag conveyor belt 4 and the high-energy pulsed laser all-element detection device 1. Or, when the coal combustion product is fly ash, the drying device may be disposed in a connecting pipeline between the high-energy pulse laser all-element detection device 1 and the fly ash conveying pipeline 6. It is also possible to provide a sealing connection device at the connection between the high-energy pulse laser all-element detection device 1 and the fly ash conveying pipeline 6, and the sealing connection device is used for sealing connection between the high-energy pulse laser all-element detection device and the fly ash conveying pipeline.
In addition, for the coal slag in the coal combustion product, because the coal slag is usually solid particles under certain conditions, when the coal slag is dried and detected by the high-energy pulse laser all-element detection device 1, the solid particles have a certain volume, and the results measured at different positions may have larger differences. Therefore, the slag dried by the drying device can be further conveyed to a slag crushing and stirring device, the dried slag is crushed and uniformly stirred by the slag crushing and stirring device, and then the crushed slag is conveyed to high-energy pulse laser full-element detection equipment for detection.
In practical applications, the heating value measuring system may further include a recovery controller and a slag recovery device. Wherein, the recovery controller is connected with the heat value calculating device 3, and under the condition that the heat value of the slag calculated by the heat value calculating device 3 is larger than a preset threshold value, the signal is transmitted to the recovery controller, so that the slag recovery device is controlled by the recovery controller to recover the slag. When the preset threshold is set, the preset threshold generally reflects the combustion degree of coal in the coal-fired boiler, for example, when the heat value of the slag is smaller than the preset threshold, it indicates that the coal in the coal-fired boiler is sufficiently combusted or close to the sufficiently combusted coal, and when the heat value of the slag is larger than the preset threshold, it indicates that the coal in the coal-fired boiler is insufficiently combusted, and at this time, the recovery controller can control the slag recovery device to recover the slag, so that the slag can be reused.
Of course, the heat value measuring system may further include an alarm system, which is also connected to the heat value calculating device 3, so that in the case where the heat value of the coal combustion product, such as slag, fly ash, etc., calculated by the heat value calculating device 3 is greater than a preset threshold value, an alarm can be issued through the alarm system to prompt the relevant person. The alarm system may issue an alarm by means of voice broadcast, video broadcast, or the like.
In practical application, in order to facilitate conveying the coal combustion products to the high-energy pulse laser all-element detection device 1 and the moisture meter 2 for corresponding measurement, different conveying modes can be adopted according to the characteristics of different coal combustion products. For example, when the coal combustion product is slag, since slag is a settled solid, a slag conveyor belt 4 may be installed at a slag outlet of the coal-fired boiler a, and the slag conveyor belt 4 may be connected to the high-energy pulse laser all-element detection device 1 and the moisture meter 2 so that slag is conveyed by the slag conveyor belt 4.
In practical application, after the calorific value of the coal combustion products such as slag or fly ash is calculated by the calorific value calculation device 3, in order to facilitate displaying the calorific value, a display module (for example, a display screen) may be additionally arranged in the calorific value calculation device 3, and the calorific values of the coal combustion products such as slag or fly ash are displayed through the display screen, so that an operator of the coal-fired boiler a can timely know the information and guide the operation and adjustment of the coal-fired boiler a. Therefore, in practical applications, the heat value calculation device 3 may be a computer with a display screen.
In addition, after the calorific value calculation device 3 calculates the calorific value of the coal combustion products such as the slag or the fly ash, the calorific value calculation device can also draw a slag calorific value change curve or a fly ash calorific value change curve by combining historical data such as the historical calorific value of the slag, the historical calorific value of the fly ash and the like, and display the slag calorific value change curve or the fly ash calorific value change curve, so that an operator of the coal-fired boiler A can be better guided to carry out operation adjustment.
The above are merely examples of the present application and are not intended to limit the present application. Various modifications and changes may occur to those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application should be included in the scope of the claims of the present application.
Claims (10)
1. A system for measuring the calorific value of slag, comprising: high energy pulse laser total element check out test set, moisture meter and calorific value calculation equipment, wherein:
the high-energy pulse laser all-element detection equipment is used for measuring the mass content of each chemical element in the slag;
the moisture tester is used for measuring the mass content of moisture in the slag;
and the heat value calculation device is used for calculating the heat value of the slag according to the mass content of the moisture in the slag and the mass content of each chemical element.
2. The calorific value measurement system of claim 1, further comprising a slag conveyor belt installed at a slag outlet of the coal fired boiler for conveying the slag to the high energy pulsed laser total element detection apparatus and the moisture meter.
3. The carbon content measuring system of claim 2, wherein the slag conveyor belt comprises a slag main conveyor belt and a slag sampling belt, wherein the slag sampling belt is connected to the slag main conveyor belt; and the number of the first and second groups,
the slag sampling belt is used for conveying the slag to the high-energy pulse laser all-element detection equipment and the moisture tester.
4. The calorific value measurement system of claim 1, further comprising a drying apparatus for drying the slag delivered to the high energy pulsed laser all element detection device; then the process of the first step is carried out,
the high-energy pulse laser all-element detection equipment is used for measuring the mass content of each chemical element in the dried slag.
5. The calorific value measurement system according to claim 4, further comprising a slag pulverizing and stirring device for pulverizing and stirring the dried slag; then the process of the first step is carried out,
the high-energy pulse laser all-element detection equipment is used for measuring the mass content of each chemical element in the dried, crushed and stirred slag.
6. The heating value measuring system of claim 1, further comprising a presentation module in the heating value calculating device for presenting the calculated heating value of the slag.
7. The calorific value measurement system of claim 6, wherein the display module is configured to generate a slag calorific value variation curve from the calculated calorific value of the slag and a historical calorific value of the slag, and display the slag calorific value variation curve.
8. The thermal value measurement system of claim 1, further comprising: the recovery controller is used for controlling the slag recovery device to recover the slag when the calculated heat value of the slag is larger than a preset threshold value.
9. The thermal value measurement system of claim 8, further comprising: and the alarm system is used for sending an alarm through the alarm system when the calculated heat value of the slag is larger than a preset threshold value.
10. A calorific value measurement system according to claim 9, wherein the alarm system comprises in particular: a voice alert system.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110003638.0A CN112834566A (en) | 2021-01-04 | 2021-01-04 | Heat value measuring system for slag |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110003638.0A CN112834566A (en) | 2021-01-04 | 2021-01-04 | Heat value measuring system for slag |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN112834566A true CN112834566A (en) | 2021-05-25 |
Family
ID=75927466
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110003638.0A Pending CN112834566A (en) | 2021-01-04 | 2021-01-04 | Heat value measuring system for slag |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN112834566A (en) |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201547755U (en) * | 2009-11-09 | 2010-08-11 | 际华三五零二职业装有限公司 | Secondary back-burning device for fly ash in flue gas of boiler |
| CN102719276A (en) * | 2012-06-13 | 2012-10-10 | 河北凯跃化工集团有限公司 | Method for cyclic utilization of slags of fixed bed gas generator |
| CN103411212A (en) * | 2013-08-23 | 2013-11-27 | 太原钢铁(集团)有限公司 | Recycling process for waste furnace slag in fluidized bed boiler combustion system |
| CN106777943A (en) * | 2016-12-07 | 2017-05-31 | 广东电网有限责任公司电力科学研究院 | A kind of on-line prediction method of unburned combustible in fly ash after coal powder boiler combustion |
| CN109282280A (en) * | 2018-09-29 | 2019-01-29 | 中国能源建设集团广东省电力设计研究院有限公司 | CFB Boiler water combined recovery heat of slags system and its control method |
| CN109855892A (en) * | 2018-11-27 | 2019-06-07 | 沈阳环境科学研究院 | Heat loss of imperfect solid combustion rapid detection method based on Carbon balance |
| CN111751370A (en) * | 2020-06-17 | 2020-10-09 | 神华神东电力有限责任公司 | System and method for testing thermal efficiency of boiler |
| CN214668586U (en) * | 2021-01-04 | 2021-11-09 | 神华神东电力有限责任公司 | Heat value measuring system of fly ash |
-
2021
- 2021-01-04 CN CN202110003638.0A patent/CN112834566A/en active Pending
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201547755U (en) * | 2009-11-09 | 2010-08-11 | 际华三五零二职业装有限公司 | Secondary back-burning device for fly ash in flue gas of boiler |
| CN102719276A (en) * | 2012-06-13 | 2012-10-10 | 河北凯跃化工集团有限公司 | Method for cyclic utilization of slags of fixed bed gas generator |
| CN103411212A (en) * | 2013-08-23 | 2013-11-27 | 太原钢铁(集团)有限公司 | Recycling process for waste furnace slag in fluidized bed boiler combustion system |
| CN106777943A (en) * | 2016-12-07 | 2017-05-31 | 广东电网有限责任公司电力科学研究院 | A kind of on-line prediction method of unburned combustible in fly ash after coal powder boiler combustion |
| CN109282280A (en) * | 2018-09-29 | 2019-01-29 | 中国能源建设集团广东省电力设计研究院有限公司 | CFB Boiler water combined recovery heat of slags system and its control method |
| CN109855892A (en) * | 2018-11-27 | 2019-06-07 | 沈阳环境科学研究院 | Heat loss of imperfect solid combustion rapid detection method based on Carbon balance |
| CN111751370A (en) * | 2020-06-17 | 2020-10-09 | 神华神东电力有限责任公司 | System and method for testing thermal efficiency of boiler |
| CN214668586U (en) * | 2021-01-04 | 2021-11-09 | 神华神东电力有限责任公司 | Heat value measuring system of fly ash |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN207264430U (en) | Positive-pressure type medium-speed pulverizer fuel pulverizing plant fineness of pulverized coal real-time monitoring system | |
| CN203981700U (en) | Dust through-current capacity pick-up unit | |
| CN214668586U (en) | Heat value measuring system of fly ash | |
| CN202582596U (en) | System for integrally measuring air quantity, concentration, and granularity | |
| CN110554164A (en) | On-line monitoring system and method for coal quality in furnace for real-time operation control | |
| CN106153657A (en) | Ature of coal on-line measuring device and method | |
| CN204789462U (en) | Buggy concentration and velocity of flow on line measurement system in one time tuber pipe is said | |
| CN113804819A (en) | Thermal power plant carbon emission full-process monitoring system and monitoring method | |
| CN210954018U (en) | On-line monitoring system for coal quality in furnace for real-time operation control | |
| CN103176111B (en) | Method and special unit for measuring electrostatic safety of nonmetallic materials | |
| CN113686409A (en) | Coal-fired power plant coal bunker powder level detection device and method thereof | |
| CN2752754Y (en) | Pulverized coal concentration on-line detector | |
| CN102749274A (en) | On-line detecting device of smoke detector | |
| CN112834566A (en) | Heat value measuring system for slag | |
| CN214374300U (en) | Carbon content measuring system of fly ash | |
| CN102095773A (en) | Smoke oxygen content measurement method and system | |
| CN105527203A (en) | Smoke dust concentration direct-reading monitoring system and method | |
| CN214668616U (en) | Carbon content measuring system of slag | |
| CN2752755Y (en) | Powder coal fineness on-line detector | |
| CN103513006A (en) | Thermal power generation industry carbon emission overall process monitoring system integrated technology | |
| CN216117484U (en) | Thermal power plant carbon emission full-process monitoring system | |
| CN110749523A (en) | Denitration catalyst abrasion strength detection device and working method thereof | |
| CN103292842A (en) | Insertion type flue gas flow measuring method and measuring device based on detection of oxygen content | |
| CN101819070B (en) | Gas shock wave soot blowing deflagration misfire detection method | |
| CN201408195Y (en) | On-line real-time coal consumption measurement system for generating units of thermal power plant |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20210525 |
|
| RJ01 | Rejection of invention patent application after publication |