CN111665265B - Device for online measurement of carbon content of fly ash in ash bucket - Google Patents
Device for online measurement of carbon content of fly ash in ash bucket Download PDFInfo
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- CN111665265B CN111665265B CN202010643683.8A CN202010643683A CN111665265B CN 111665265 B CN111665265 B CN 111665265B CN 202010643683 A CN202010643683 A CN 202010643683A CN 111665265 B CN111665265 B CN 111665265B
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- 239000010881 fly ash Substances 0.000 title claims abstract description 85
- 239000002956 ash Substances 0.000 title claims abstract description 50
- 238000005259 measurement Methods 0.000 title claims abstract description 44
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 title claims abstract description 31
- 229910052799 carbon Inorganic materials 0.000 title claims abstract description 31
- 230000005540 biological transmission Effects 0.000 claims abstract description 14
- 238000007664 blowing Methods 0.000 claims abstract 4
- 239000000428 dust Substances 0.000 claims description 16
- 238000001179 sorption measurement Methods 0.000 claims description 6
- 239000007769 metal material Substances 0.000 claims description 3
- 238000005070 sampling Methods 0.000 abstract description 8
- 238000001514 detection method Methods 0.000 abstract description 4
- 239000000523 sample Substances 0.000 description 25
- 238000010926 purge Methods 0.000 description 16
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 description 3
- 238000002485 combustion reaction Methods 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
- 239000003546 flue gas Substances 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 238000005299 abrasion Methods 0.000 description 2
- 230000008859 change Effects 0.000 description 2
- 230000005484 gravity Effects 0.000 description 2
- 238000012423 maintenance Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 238000007789 sealing Methods 0.000 description 2
- 238000000926 separation method Methods 0.000 description 2
- NINIDFKCEFEMDL-UHFFFAOYSA-N Sulfur Chemical compound [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000003245 coal Substances 0.000 description 1
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000010419 fine particle Substances 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000012544 monitoring process Methods 0.000 description 1
- 238000009774 resonance method Methods 0.000 description 1
- 238000001228 spectrum Methods 0.000 description 1
- 229910052717 sulfur Inorganic materials 0.000 description 1
- 239000011593 sulfur Substances 0.000 description 1
- 238000012546 transfer Methods 0.000 description 1
- 238000010977 unit operation Methods 0.000 description 1
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N22/00—Investigating or analysing materials by the use of microwaves or radio waves, i.e. electromagnetic waves with a wavelength of one millimetre or more
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- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Chemical & Material Sciences (AREA)
- Analytical Chemistry (AREA)
- Biochemistry (AREA)
- General Health & Medical Sciences (AREA)
- General Physics & Mathematics (AREA)
- Immunology (AREA)
- Pathology (AREA)
- Sampling And Sample Adjustment (AREA)
Abstract
The invention provides a device for online measurement of carbon content in fly ash in an ash bucket, which comprises a connecting flange, a motor, a reversing gear box, a fly ash conveying device and a microwave measuring cavity, wherein the connecting flange is sealed and clamped on an opening of the ash bucket, the motor and a support frame are respectively arranged on the outer side and the inner side of the connecting flange, the microwave measuring cavity is arranged at the bottom of one end of the support frame close to the connecting flange, a blowing nozzle penetrates through the connecting flange and is suspended at the opening side of the microwave measuring cavity, the fly ash conveying device is arranged at the upper part of one end of the support frame far away from the connecting flange, the conveying tail end of the fly ash conveying device is provided with a guide plate which is obliquely arranged, the reversing gear box is arranged on one side of the support frame, the input end of the reversing gear box is connected with a power output shaft of the motor through a coupler, and the output end of the reversing gear box is connected with the power input end of the fly ash conveying device through a transmission shaft. The invention eliminates the problems of blockage and update in sampling, improves the reliability and detection precision of fly ash sampling, simultaneously improves the safety in use and avoids the phenomenon of jamming in the operation of the device.
Description
Technical Field
The invention belongs to the technical field of carbon content measurement, and particularly relates to a device for online measurement of carbon content of fly ash in an ash hopper.
Background
The carbon content of the fly ash of the boiler is an important index for reflecting the combustion efficiency of a coal-fired boiler of a thermal power plant, and the real-time measurement of the carbon content of the fly ash is beneficial to monitoring the combustion of the boiler, guiding the combustion adjustment to reduce the coal consumption and improving the economical efficiency and the safety of the unit operation.
Most of the existing online microwave carbon content detection devices adopt a constant-speed sampler to sample fly ash from a flue, a cyclone separator is used for flue gas separation of the fly ash, an ash sample after separation falls into a microwave measurement cavity by means of gravity, once the quantity of the ash sample is enough, a microwave resonance method is started for measurement, and the measured ash sample is sent back to the flue by compressed air. The technology needs to transfer the fly ash from the flue to a microwave measuring cavity outside the flue, and in the process, the fly ash is easy to condense due to the humidity in high-temperature flue gas to block a sampling pipeline, so that the fault occurs. In addition, the high-speed flue gas generates abrasion to the sampler, and the using and maintenance amount is large.
The fly ash carbon measuring device disclosed in the patent of China's application publication No. CN109557261A mainly comprises an auger arranged in an ash hopper, an ash sample in the ash hopper and falling in an auger groove is pushed into a microwave measuring cavity, then the carbon content of the ash sample is measured by a microwave attenuation method, and the measured ash sample is reversely pushed out by the auger, so that a measuring period is completed. Because the auger rotates and pushes to generate an extruded ash sample, fine fly ash can be adhered to the auger, and particularly when the fly ash with high humidity and fine particle size or the ash sample with high sulfur content is encountered, the auger sampling groove is easily adhered with the ash sample, so that the function of taking a new ash sample is difficult to realize. In addition, the auger passes through the microwave measurement cavity, and the structural position change of the auger can influence the precision of microwave measurement.
Disclosure of Invention
The invention aims to provide a device for online measurement of the carbon content of fly ash in an ash hopper, which solves the defects in the prior art, eliminates the problems of blockage and update in sampling, and improves the reliability and detection precision of fly ash sampling.
The technical solution for realizing the purpose of the invention is as follows:
a device for on-line measurement of fly ash carbon content in an ash hopper comprises a connecting flange, a motor, a reversing gear box, a fly ash conveying device and a microwave measurement cavity; the motor is arranged on the outer side of the connecting flange, and the inner side of the connecting flange is provided with a support frame; the purging nozzle penetrates through the connecting flange, one end of the purging nozzle extends out of the outer side of the connecting flange, the other end of the purging nozzle is arranged on the inner side of the connecting flange and is suspended on the opening side of the microwave measuring cavity, and the purging nozzle is used for removing residual samples in the microwave measuring cavity; the fly ash conveying device is arranged at the upper part of one end of the support frame, which is far away from the connecting flange, and the conveying direction is from the end far away from the connecting flange to the end close to the connecting flange, and is used for collecting and conveying fly ash falling from the adsorption electrode plate of the electrostatic dust collector; the conveying tail end of the fly ash conveying device is provided with a guide plate which is obliquely arranged, the high point of the guide plate is close to the fly ash conveying device, and the low point of the guide plate is suspended above the opening of the microwave measuring cavity and used for guiding the fly ash on the fly ash conveying device into the microwave measuring cavity; the reversing gear box is arranged on one side of the support frame, the input end of the reversing gear box is connected with the power output shaft of the motor through the coupler, and the output end of the reversing gear box is connected with the power input end of the fly ash conveying device through the transmission shaft.
Furthermore, the device for the online measurement of the carbon content of the fly ash in the ash bucket adopts a sprocket type transmission structure or a roller structure, and the conveying belt adopts a crawler type or belt type structure.
Further, the fly ash conveying device comprises a driving chain wheel, a driven chain wheel, a chain crawler and dust collecting sheets, wherein the driving chain wheel and the driven chain wheel are connected through the chain crawler and rotate synchronously, the driving chain wheel is connected with the output end of the reversing gear box through a transmission shaft, and the chain crawler is fixedly provided with the dust collecting sheets.
Furthermore, the device for online measurement of the carbon content of the fly ash in the ash bucket has the advantages that the microwave measurement cavity is of a cylindrical double-layer three-cavity structure, the upper-layer cavity is a sample pool with an opening at the top, and microwave antennas are respectively arranged in the lower-layer two-cavity, wherein one microwave antenna is a transmitting antenna, and the other microwave antenna is a receiving antenna.
Furthermore, the bottom of the sample pool is made of non-metallic materials.
Furthermore, the device for on-line measurement of the carbon content of the fly ash in the ash bucket adopts a microwave coaxial resonant cavity with 1/4 wavelength or 1/2 wavelength.
Furthermore, the microwave frequency of the microwave measuring cavity is 2 GHz-9 GHz.
Compared with the prior art, the technical scheme adopted by the invention has the following technical effects:
1. the device for online measurement of the carbon content of the fly ash in the ash bucket can eliminate the problems of blockage and update in sampling, and improve the reliability and detection precision of fly ash sampling.
2. The device for on-line measurement of the carbon content of the fly ash in the ash bucket improves the safety in use and avoids the phenomenon of jamming in the operation of the device.
3. The device for online measurement of the carbon content of the fly ash in the ash bucket has small abrasion to parts and small maintenance amount.
Drawings
FIG. 1 is a schematic structural diagram I of the device for on-line measurement of carbon content in fly ash in an ash hopper.
FIG. 2 is a schematic structural diagram II of the device for on-line measurement of carbon content in fly ash in an ash hopper according to the present invention.
FIG. 3 is a schematic structural diagram of a microwave measuring cavity of the device for on-line measurement of carbon content in fly ash in an ash hopper.
Reference signs mean: 1: ash bucket, 2: connecting flange, 3: motor, 4: reversing gear case, 5: drive sprocket, 6: driven sprocket, 7: chain track, 8: a guide plate and 9: microwave measurement cavity, 10: purge nozzle, 11: coupling, 12: transmission shaft, 13: support frame, 14: a dust collecting sheet.
Detailed Description
Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the accompanying drawings are illustrative only for the purpose of explaining the present invention, and are not to be construed as limiting the present invention.
A device for on-line measurement of fly ash carbon content in an ash hopper comprises a connecting flange 2, a motor 3, a reversing gear box 4, a fly ash conveying device and a microwave measurement cavity 9. Wherein, flange 2 seals to clamp on ash bucket 1 opening, and motor 3 installs in flange 2's the outside, and flange 2's inboard is installed support frame 13. The microwave measurement cavity 9 is installed at the bottom of one end of the support frame 13 close to the connecting flange 2, the purging nozzle 10 penetrates through the connecting flange 2, one end of the purging nozzle extends out of the outer side of the connecting flange 2, the other end of the purging nozzle is arranged on the inner side of the connecting flange 2 and is suspended on the opening side of the microwave measurement cavity 9, and the purging nozzle is used for removing residual samples in the microwave measurement cavity 9. The fly ash conveying device is arranged at the upper part of one end, far away from the connecting flange 2, of the support frame 13, the conveying direction is from far away from the connecting flange 2 to near the connecting flange 2, the fly ash conveying device is used for collecting and conveying fly ash falling from an adsorption electrode plate of the electrostatic dust collector, the fly ash conveying device adopts a chain wheel type transmission structure or a roller structure, and the conveying belt adopts a crawler type or belt type structure. The conveying end of the fly ash conveying device is provided with a guide plate 8 which is obliquely arranged, the high point of the guide plate 8 is close to the fly ash conveying device, and the low point of the guide plate 8 is suspended above the opening of the microwave measuring cavity 9 and is used for guiding the fly ash on the fly ash conveying device into the microwave measuring cavity 9. The reversing gear box 4 is arranged at one side of the support frame 13, the input end of the reversing gear box is connected with the power output shaft of the motor 3 through a coupler 11, and the output end of the reversing gear box is connected with the power input end of the fly ash conveying device through a transmission shaft 12.
Example 1
A device for on-line measurement of fly ash carbon content in an ash hopper comprises a connecting flange 2, a motor 3, a reversing gear box 4, a fly ash conveying device and a microwave measurement cavity 9. Wherein:
the connecting flange 2 is sealed and clamped on the opening of the ash bucket 1. The motor 3 is arranged on the outer side of the connecting flange 2, so that the safety of the device in use is improved. A support frame 13 is mounted on the inner side of the connecting flange 2. The microwave measurement cavity 9 is installed at the bottom of one end of the support frame 13 close to the connecting flange 2, the purging nozzle 10 penetrates through the connecting flange 2, one end of the purging nozzle extends out of the outer side of the connecting flange 2, the other end of the purging nozzle is arranged on the inner side of the connecting flange 2 and is suspended on the opening side of the microwave measurement cavity 9, and the purging nozzle is used for removing residual samples in the microwave measurement cavity 9.
The fly ash conveying device is arranged on the upper part of one end of the support frame 13 far away from the connecting flange 2, and the conveying direction is from far away from the connecting flange 2 to being close to the connecting flange 2, and is used for collecting and conveying fly ash falling from the adsorption electrode plate of the electrostatic dust collector. The conveying end of the fly ash conveying device is provided with a guide plate 8 which is obliquely arranged, the high point of the guide plate 8 is close to the fly ash conveying device, and the low point of the guide plate 8 is suspended above the opening of the microwave measuring cavity 9 and is used for guiding the fly ash on the fly ash conveying device into the microwave measuring cavity 9. The fly ash conveying device adopts a chain wheel type transmission structure, and the conveying belt adopts a crawler type structure. The fly ash conveying device comprises a driving chain wheel 5, a driven chain wheel 6, a chain crawler 7 and dust collecting pieces 14, wherein the driving chain wheel 5 and the driven chain wheel 6 are connected through the chain crawler 7 and rotate synchronously, the driving chain wheel 5 is connected with the output end of the reversing gear box 4 through a transmission shaft 12, and the chain crawler 7 is fixedly provided with the dust collecting pieces 14.
The reversing gear box 4 is arranged on one side of the support frame 13, and the reversing gear box 4 adopts a full-sealing form, so that the phenomenon of jamming in the operation of the on-line device is avoided. The input end of the fly ash conveying device is connected with the power output shaft of the motor 3 through the coupler 11, and the output end of the fly ash conveying device is connected with the power input end of the fly ash conveying device through the transmission shaft 12, so that the stable operation of the fly ash conveying device is ensured.
The microwave measuring cavity 9 is a cylindrical double-layer three-cavity structure, a 1/4 wavelength or 1/2 wavelength microwave coaxial resonant cavity is adopted, and the microwave frequency is 2 GHz-9 GHz. The upper layer cavity is a sample cell 9-1 with an opening at the top, and the bottom of the sample cell 9-1 is made of non-metallic materials. Microwave antennas 9-2 are respectively arranged in the lower double cavities, one is a transmitting antenna, and the other is a receiving antenna.
Example 2
The device for on-line measurement of the carbon content of fly ash in an ash bucket is arranged on the ash bucket 1 of an electrostatic dust collector, the installation height of the device is above an ash bucket material level probe and below a dust collector adsorption electrode plate, and the specific working process is as follows:
the device is arranged on the ash bucket 1 through a connecting flange 2, and sealing is guaranteed.
The power supply is switched on, the motor 3 is started, the reversing gear box 4 is driven to rotate through the coupler 11, the output end of the reversing gear box 4 enables the driving chain wheel 5 to rotate through the transmission shaft 12, and therefore the chain crawler 7 and the driven chain wheel 6 are driven to synchronously rotate.
The fly ash falls down from the adsorption electrode plate of the electrostatic dust collector and continuously falls onto the dust collection sheet 14 arranged on the chain crawler 7 under the action of the gravity of an ash sample, and the dust collection sheet 14 plays a role in collecting ash.
The control program controls the chain crawler 7 to move periodically, so that the ash sample on the chain crawler 7 is guided to the sample pool 9-1 of the microwave measuring cavity 9 through the guide plate 8, and the sample pool 9-1 is ensured to be filled with the ash sample according to the collection time set by the program.
The program controls the microwave frequency sweep instrument to send out a microwave frequency sweep signal to the microwave transmitting antenna, the microwave power detector receives the microwave signal transmitted by the microwave receiving antenna, the calculating unit calculates the carbon content of the fly ash according to the change of the microwave power spectrum and the deviation of the resonant frequency, and the fly ash content signal obtained after calculation is transmitted to a user by the control unit.
And opening the purging electromagnetic valve, and controlling the compressed air to be sent into the purging nozzle 10 to purge the sample cell 9-1, so as to empty the ash sample in the sample cell 9-1 for receiving the next ash sample measurement.
The program is circulated, so that the on-line continuous measurement of the carbon content of the fly ash in the ash bucket is realized.
The above description is only a partial embodiment of the present invention, and it should be noted that, for those skilled in the art, several modifications may be made without departing from the principles of the invention and these modifications are to be considered as within the scope of the invention.
Claims (5)
1. A device for on-line measurement of carbon content in fly ash in an ash bucket is characterized by comprising a connecting flange (2), a motor (3), a reversing gear box (4), a fly ash conveying device and a microwave measuring cavity (9); the connecting flange (2) is hermetically clamped on an opening of the ash bucket (1), the motor (3) is installed on the outer side of the connecting flange (2), and the inner side of the connecting flange (2) is provided with a support frame (13);
the microwave measuring cavity (9) is arranged at the bottom of one end, close to the connecting flange (2), of the support frame (13), the microwave measuring cavity (9) is of a cylindrical double-layer three-cavity structure, wherein the upper cavity is a sample pool (9-1) with an opening at the top, microwave antennas (9-2) are respectively arranged in the lower double cavities, one of the microwave measuring cavity is a transmitting antenna, and the other is a receiving antenna; the blowing nozzle (10) penetrates through the connecting flange (2), one end of the blowing nozzle extends out of the outer side of the connecting flange (2), the other end of the blowing nozzle is arranged on the inner side of the connecting flange (2) and is suspended on the opening side of the microwave measuring cavity (9) for removing residual samples in the microwave measuring cavity (9);
the fly ash conveying device is arranged at the upper part of one end, far away from the connecting flange (2), of the support frame (13), the conveying direction is from far away from the connecting flange (2) to close to the connecting flange (2), and is used for collecting and conveying fly ash falling from an adsorption electrode plate of the electrostatic dust collector, the fly ash conveying device adopts a chain wheel type transmission structure or a roller structure, and the conveying belt adopts a crawler type or belt type structure; the conveying tail end of the fly ash conveying device is provided with a guide plate (8) which is obliquely arranged, the high point of the guide plate (8) is close to the fly ash conveying device, and the low point of the guide plate is suspended above the opening of the microwave measuring cavity (9) and is used for guiding the fly ash on the fly ash conveying device into the microwave measuring cavity (9);
the reversing gear box (4) is arranged on one side of the support frame (13), the input end of the reversing gear box is connected with the power output shaft of the motor (3) through a coupler (11), and the output end of the reversing gear box is connected with the power input end of the fly ash conveying device through a transmission shaft (12).
2. The device for the online measurement of the carbon content of the fly ash in the ash bucket according to claim 1, wherein the fly ash conveying device comprises a driving chain wheel (5), a driven chain wheel (6), a chain crawler (7) and dust collecting sheets (14), wherein the driving chain wheel (5) and the driven chain wheel (6) are connected through the chain crawler (7) and rotate synchronously, the driving chain wheel (5) is connected with the output end of the reversing gear box (4) through a transmission shaft (12), and the chain crawler (7) is fixedly provided with the dust collecting sheets (14).
3. The device for the on-line measurement of the carbon content in fly ash in an ash hopper according to claim 1, characterized in that the bottom of the sample cell (9-1) is made of non-metallic material.
4. The device for on-line measurement of carbon content in fly ash in an ash hopper according to claim 1, characterized in that the microwave measurement cavity (9) adopts a 1/4 wavelength or 1/2 wavelength microwave coaxial resonant cavity.
5. The device for the on-line measurement of the carbon content of the fly ash in the ash hopper according to claim 1, wherein the microwave frequency of the microwave measurement cavity (9) is 2 GHz-9 GHz.
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| CN202010643683.8A CN111665265B (en) | 2020-07-07 | 2020-07-07 | Device for online measurement of carbon content of fly ash in ash bucket |
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| CN202010643683.8A CN111665265B (en) | 2020-07-07 | 2020-07-07 | Device for online measurement of carbon content of fly ash in ash bucket |
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| CN111665265B true CN111665265B (en) | 2022-11-29 |
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Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5109201A (en) * | 1989-12-08 | 1992-04-28 | Trerice Douglas N | Method and associated apparatus for determining carbon content in fly ash |
| CN101871655A (en) * | 2010-06-24 | 2010-10-27 | 西安交通大学 | An online monitoring system for the whole process of coal combustion in power plant boilers |
| CN102235983A (en) * | 2010-05-07 | 2011-11-09 | 上海赫特能源科技有限公司 | Adjustable sensor for microwave carbon measuring meter |
| CN107356612A (en) * | 2017-07-10 | 2017-11-17 | 华北电力大学 | Can on-line proving bypass sampling type micro-wave survey unburned carbon in flue dust device and method |
| CN207769442U (en) * | 2017-12-11 | 2018-08-28 | 贵州乌江水电开发有限责任公司 | A kind of " W " flame furnace unburned carbon absorption plant |
| CN109557261A (en) * | 2018-12-31 | 2019-04-02 | 光力科技股份有限公司 | Flying dust carbon determination system and flying dust carbon testing device |
| CN109556925A (en) * | 2018-12-31 | 2019-04-02 | 光力科技股份有限公司 | Dry collector fly ash sampling device and sampling system |
| CN210427400U (en) * | 2019-07-22 | 2020-04-28 | 南京全方自动化系统有限公司 | Microwave spectrum measuring device |
| CN212301370U (en) * | 2020-07-07 | 2021-01-05 | 南京大得科技有限公司 | Device for online measurement of carbon content of fly ash in ash bucket |
-
2020
- 2020-07-07 CN CN202010643683.8A patent/CN111665265B/en active Active
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5109201A (en) * | 1989-12-08 | 1992-04-28 | Trerice Douglas N | Method and associated apparatus for determining carbon content in fly ash |
| CN102235983A (en) * | 2010-05-07 | 2011-11-09 | 上海赫特能源科技有限公司 | Adjustable sensor for microwave carbon measuring meter |
| CN101871655A (en) * | 2010-06-24 | 2010-10-27 | 西安交通大学 | An online monitoring system for the whole process of coal combustion in power plant boilers |
| CN107356612A (en) * | 2017-07-10 | 2017-11-17 | 华北电力大学 | Can on-line proving bypass sampling type micro-wave survey unburned carbon in flue dust device and method |
| CN207769442U (en) * | 2017-12-11 | 2018-08-28 | 贵州乌江水电开发有限责任公司 | A kind of " W " flame furnace unburned carbon absorption plant |
| CN109557261A (en) * | 2018-12-31 | 2019-04-02 | 光力科技股份有限公司 | Flying dust carbon determination system and flying dust carbon testing device |
| CN109556925A (en) * | 2018-12-31 | 2019-04-02 | 光力科技股份有限公司 | Dry collector fly ash sampling device and sampling system |
| CN210427400U (en) * | 2019-07-22 | 2020-04-28 | 南京全方自动化系统有限公司 | Microwave spectrum measuring device |
| CN212301370U (en) * | 2020-07-07 | 2021-01-05 | 南京大得科技有限公司 | Device for online measurement of carbon content of fly ash in ash bucket |
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