CN102175033B - Ultrasonic wave coal granule resonance burning optimization technique and device - Google Patents

Ultrasonic wave coal granule resonance burning optimization technique and device Download PDF

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Publication number
CN102175033B
CN102175033B CN 201010608716 CN201010608716A CN102175033B CN 102175033 B CN102175033 B CN 102175033B CN 201010608716 CN201010608716 CN 201010608716 CN 201010608716 A CN201010608716 A CN 201010608716A CN 102175033 B CN102175033 B CN 102175033B
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China
Prior art keywords
coal
boiler
frequency
ultrasonic wave
supersonic generator
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Expired - Fee Related
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CN 201010608716
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CN102175033A (en
Inventor
韩璞
李加护
马世京
王瀛洲
牛贝
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North China Electric Power University
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North China Electric Power University
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Publication of CN102175033A publication Critical patent/CN102175033A/en
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Abstract

The invention belongs to the technical field of a coal burning boiler, and in particular relates to an ultrasonic wave coal granule resonance burning optimization technique and a device. The technique is characterized by carrying out real-time continuous sampling on coal granules which are burned in a boiler by using a digital coal granule inherent frequency detection device; determining the inherent frequency of the coal granules continuously in real time in the digital coal granule inherent frequency detection device; summarizing the inherent frequency of the coal granules in the boiler and boiler loading information together in a control system, regulating the ultrasonic wave generator by the control system, regulating the frequency of the ultrasonic wave generator in real time as the inherent frequency of the coal granules in the boiler, and regulating the power of the ultrasonic wave generator and the boiler loading which are in direct ratio. According to the invention, the inherent frequency of the coal granules can be detected continuously in real time for any type of coal, thus the inherent frequency and power of the ultrasonic wave generator can be regulated in real time, and the granules are subjected to resonance or vibration for optimization burning.

Description

A kind of ultrasonic wave coal granule resonance burning optimization technique and equipment
Technical field
The invention belongs to the coal-burning boiler technical field, particularly a kind of ultrasonic wave coal granule resonance burning optimization technique and equipment.
Background technology
China's thermal power generation mainly refers to use the thermal coal generating, its shared Chinese total installation of generating capacity is about more than 75%, for coal furnace, the heat loss due to incomplete combustion is higher, not only reduced boiler efficiency, wasted the energy, and the discharging of increase pollutant, in short supply along with global energy, energy-saving and emission-reduction are as a state's basic policy, and reduce coal-fired heat loss due to incomplete combustion and improve burning of coal efficient, and by a large amount of infrastest discoveries, adopt ultrasonic wave that the coal grain is produced resonance, to the high performance clean burning effect highly significant of coal.
The principle that resonance improves efficiency of combustion is:
(1) resonance can in time shake the ash on coal grain surface, can make in the coal flammable matter in time contact high-temperature flue gas and fully burn;
(2) coal-powder boiler is in diffusion region or transition region substantially, and coal dust resonance is so that the relative velocity increase of coal dust and hot-air, has namely done diffusion velocity high, so improved chemical reaction velocity;
(3) resonance of coal grain subtracts the probability of buckwheat coal bonding, has enlarged the contact area of coal grain and air, makes the more abundant ingress of air of coal dust;
(4) coal dust resonance has increased the kinetic energy of particle, has suppressed between the particle, the attraction between particle and the hot side, can reduce coking;
(5) resonance of coal grain has improved the utilization ratio of sending into oxygen amount in the stove, reduces the discharging of pollutant NOx.
But, also do not have at present corresponding equipment in actual production, to use.
Summary of the invention
The invention provides a kind of ultrasonic wave coal granule resonance burning technology and equipment, can send according to the size of sending into the boiler coal-ash particle ultrasonic wave of corresponding frequency, make most coal dusts produce resonance or vibration, thereby improve the combustion rate of coal grain, thereby reach the purpose of burning optimization.
Ultrasonic wave coal granule resonance burning technology of the present invention may further comprise the steps:
(1) use digital coal grain device for detecting inherent frequency that the coal grain that enters boiler combustion is carried out the real-time continuous sampling; Sample frequency be per 3~5 minutes once;
(2) intrinsic frequency of real-time continuous mensuration coal grain in digital coal grain device for detecting inherent frequency;
(3) intrinsic frequency and the boiler load information that enter stove coal grain are aggregated into control system jointly, by control system supersonic generator is regulated, the frequency of adjusting in real time supersonic generator is the described intrinsic frequency that enters pot coal grain, the power of adjusting supersonic generator is directly proportional with boiler load, scale relation is P=kD, and wherein P is the power of supersonic generator, and D is boiler load, k is coefficient of relationship, and span is 10 -3~10 -1
Ultrasonic wave coal granule resonance burning equipment provided by the invention, its structure is: in boiler, coal grain charging aperture below supersonic generator is set; This supersonic generator is connected with control system, control system is connected with coal grain device for detecting inherent frequency, boiler output control system respectively, receive the data that coal grain device for detecting inherent frequency and boiler output control system are sent, and send control instruction to coal grain device for detecting inherent frequency and supersonic generator.
The frequency of described supersonic generator and power are adjustable continuously.
Beneficial effect of the present invention is:
To any coal, the intrinsic frequency of detection coal grain that all can real-time continuous, thus adjust in real time intrinsic frequency worker's power of supersonic generator, make the coal grain that resonance or vibration occur, reach to Optimizing Combustion.For clean combustion and the energy-conserving and environment-protective of boiler provide a new direction, this technology is not only applicable to coal-powder boiler, and is applicable to CFBB, i.e. the technological transformation that also is applicable to existing boiler is used in applicable new power plant construction boiler erection.This device is simple and practical, and substantially non-maintaining, cost is low, and efficient is high.
Description of drawings
Fig. 1 is the structural representation of described ultrasonic wave coal dust resonant combustion equipment.
Number in the figure:
The 1-boiler; The 2-supersonic generator; The 3-control system; 4-coal grain device for detecting inherent frequency; 5-boiler output control system.
The specific embodiment
The invention provides a kind of ultrasonic wave coal granule resonance burning technology and equipment, the present invention will be further described below in conjunction with the drawings and specific embodiments.
As shown in Figure 1, in boiler 1, coal grain charging aperture below supersonic generator 2 is set; This supersonic generator 2 is connected with control system 3, control system 3 is connected with coal grain device for detecting inherent frequency 4, boiler output control system 5 respectively, receive the data that coal grain device for detecting inherent frequency and boiler output control system are sent, and send control instruction to coal grain device for detecting inherent frequency and supersonic generator.Wherein, the frequency of supersonic generator 2 and power are adjustable continuously.
During this equipment work, operate according to the following steps:
(1) use digital coal grain device for detecting inherent frequency that the coal grain that enters boiler combustion is carried out the real-time continuous sampling; Sample frequency be per 3 minutes once.
(2) intrinsic frequency of real-time continuous mensuration coal grain in digital coal grain device for detecting inherent frequency;
(3) intrinsic frequency and the boiler load information that enter stove coal grain are aggregated into control system jointly, by control system supersonic generator is regulated, the frequency of adjusting in real time supersonic generator is into pot intrinsic frequency of coal grain, and the power of adjusting sonic generator is P=10 -2D, wherein D is boiler load.

Claims (3)

1. a ultrasonic wave coal granule resonance burning optimization method is characterized in that, may further comprise the steps:
(1) use digital coal grain device for detecting inherent frequency that the coal grain that enters boiler combustion is carried out the real-time continuous sampling; Sample frequency be per 3~5 minutes once;
(2) intrinsic frequency of real-time continuous mensuration coal grain in digital coal grain device for detecting inherent frequency;
(3) intrinsic frequency and the boiler load information that enter stove coal grain are aggregated into control system jointly, by control system supersonic generator is regulated, the frequency of adjusting in real time supersonic generator is the described intrinsic frequency that enters stove coal grain, the power of adjusting supersonic generator is directly proportional with boiler load, scale relation is P=kD, and wherein P is the power of supersonic generator, and D is boiler load, k is coefficient of relationship, and span is 10 -3~10 -1
2. a ultrasonic wave coal granule resonance burning equipment is characterized in that, in boiler, coal grain charging aperture below supersonic generator is set; This supersonic generator is connected with control system, control system is connected with coal grain device for detecting inherent frequency, boiler output control system respectively, receive the data that coal grain device for detecting inherent frequency and boiler output control system are sent, and send control instruction to coal grain device for detecting inherent frequency and supersonic generator.
3. a kind of ultrasonic wave coal granule resonance burning equipment according to claim 2 is characterized in that the frequency of described supersonic generator and power are adjustable continuously.
CN 201010608716 2010-12-17 2010-12-17 Ultrasonic wave coal granule resonance burning optimization technique and device Expired - Fee Related CN102175033B (en)

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CN 201010608716 CN102175033B (en) 2010-12-17 2010-12-17 Ultrasonic wave coal granule resonance burning optimization technique and device

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Application Number Priority Date Filing Date Title
CN 201010608716 CN102175033B (en) 2010-12-17 2010-12-17 Ultrasonic wave coal granule resonance burning optimization technique and device

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CN102175033B true CN102175033B (en) 2013-04-10

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Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105972587A (en) * 2016-06-22 2016-09-28 来江 Combustion optimization device adopting pulverized coal resonance generated through sound wave excitation
CN107442047A (en) * 2017-09-19 2017-12-08 来江 A kind of acoustic excitation promotes chemical reaction rate and the device of efficiency
CN110220186B (en) * 2019-06-12 2021-02-05 山东洲星生物技术有限公司 Combustion-supporting method of circulating fluidized bed boiler

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
SE412635B (en) * 1977-02-17 1980-03-10 Enerus Erik Oscar SET FOR COMBUSTION OF SOLID, LIQUID OR GASFUL FUELS
CN85101522A (en) * 1985-04-01 1987-01-17 瑞典通用电器斯泰尔公司 The method and apparatus of burning macro particles fuel
CN85101521A (en) * 1985-04-01 1987-01-17 瑞典通用电器斯泰尔公司 The method and apparatus of burning fluid fuels
US5637192A (en) * 1989-02-14 1997-06-10 Manufacturing And Technology Conversion International Endothermic spent liquor recovery process

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
SE412635B (en) * 1977-02-17 1980-03-10 Enerus Erik Oscar SET FOR COMBUSTION OF SOLID, LIQUID OR GASFUL FUELS
CN85101522A (en) * 1985-04-01 1987-01-17 瑞典通用电器斯泰尔公司 The method and apparatus of burning macro particles fuel
CN85101521A (en) * 1985-04-01 1987-01-17 瑞典通用电器斯泰尔公司 The method and apparatus of burning fluid fuels
US5637192A (en) * 1989-02-14 1997-06-10 Manufacturing And Technology Conversion International Endothermic spent liquor recovery process

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