CN101413674A - Oxygen-enriched air mixed blowing combustion adjuvant boiler energy-saving method and employed equipment thereof - Google Patents

Oxygen-enriched air mixed blowing combustion adjuvant boiler energy-saving method and employed equipment thereof Download PDF

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Publication number
CN101413674A
CN101413674A CNA2008102377100A CN200810237710A CN101413674A CN 101413674 A CN101413674 A CN 101413674A CN A2008102377100 A CNA2008102377100 A CN A2008102377100A CN 200810237710 A CN200810237710 A CN 200810237710A CN 101413674 A CN101413674 A CN 101413674A
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air
oxygen
combustion adjuvant
saving
boiler
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CNA2008102377100A
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张开军
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张开军
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Priority to CNA2008102377100A priority Critical patent/CN101413674A/en
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    • YGENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02EREDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E20/00Combustion technologies with mitigation potential
    • Y02E20/34Indirect CO2mitigation, i.e. by acting on non CO2directly related matters of the process, e.g. pre-heating or heat recovery

Abstract

The invention provides a kind of oxygen-enriched air mixed blowing combustion adjuvant boiler energy-saving method and employed equipment thereof, it is a kind of boiler energy-saving emission-reduction combustion technology, specifically a kind of energy-efficient combustion technology and equipment that utilizes oxygen enrichment wind technology to combine with the combustion adjuvant technology, effects of energy saving and emission reduction of the present invention, equipment and operation conditions with boiler (kiln) are different and different, application case statistics from tens boilers and kiln, minimum coal saving rate is 5.7%, the highest coal saving rate reaches 25%, the 670t/h pulverized-coal fired boiler coal saving rate of certain steam power plant is 8.34%, by above statistics as seen, the effects of energy saving and emission reduction of this technology improvement method is very good, extensively promote, will produce good economic benefits and social benefit.

Description

Oxygen-enriched air mixed blowing combustion adjuvant boiler energy-saving method and employed equipment thereof
1, technical field
The present invention relates to a kind of fire coal, fuel oil, fuel gas energy-saving environmental protection combustion technology, the inadequate oxygen-enriched air mixed blowing combustion adjuvant boiler energy-saving method of the current energy utilization rate of specifically a kind of solution and employed equipment and application thereof.
2, background technology
China is used for about 2,000,000,000 tons of coal, 300,000,000 tons of fuel oils and natural gas more than 400 hundred million M of fuel consumption every year 3, and increase year by year, but China's efficiency of energy utilization is far below developed country.At present, have the energy consumption rich and influential family of fuel oil, fire coal now, all have the problem of the waste gas such as carbon dioxide insufficient, that efficiency of combustion is low, discharge is a large amount of and carbon monoxide that burn as steam power plant, Industrial Boiler, oil field boiler, gas generator, ceramic wall and floor bricks combustion furnace, steel ingot heater, cement furnace etc.Therefore improve efficiency of combustion, make its sufficient combustion, energy savings, improve environment for human survival and be imminent.In recent years, oxygen-enriched combustion technology or to add the combustion adjuvant technology in fire coal be the new breakthrough of combustion technology in modern age, fuel is fully burning under oxygen enrichment or combustion adjuvant condition, and heat radiation strengthens rapidly.It is huge that this technology produces energy-saving potential, full combustion of fuel, and soot emissions reduce, and it is optimistic that combustion efficiency is made us, and promoted the development of productivity ratio and the raising of product quality.But, these two kinds of burning-aid methods use respectively at present, use under the situation of combustion adjuvant especially separately, cost and cost performance do not improve what, so general oxygenized air combustion supporting that uses separately, at present, also not having the use that is organically combined of combustion adjuvant and two kinds of technological sciences of oxygen-enriched air, is that energy-conserving and emission-cutting technology is further brought up to new level.
3, summary of the invention
The purpose of this invention is to provide a kind of highly-efficient equipment, improve combustible quality, optimize burning process improvement, add combustion adjuvant, oxygen-enriched combusting etc., coal-fired combustion-supporting additive and the rational oxygen enrichment a kind of oxygen-enriched air mixed blowing combustion adjuvant boiler energy-saving method and the employed equipment thereof that are used of product equipment humorously.
The objective of the invention is to realize in the following manner, this method is combustion adjuvant atomizing back to be mixed with oxygen enrichment wind send boiler or stove combustion-supporting with the raising fuel economy.
Realize the matching used equipment of oxygen-enriched air mixed blowing combustion adjuvant boiler energy-saving method of the present invention, its structure is by the oxygen enrichment generating means, air processor, the heating atomization device, combustion adjuvant deployment device and boiler are formed, the oxygen enrichment generating means is by air purifier, air blast, membrane type oxygen-enriched generator and vavuum pump are formed, air purifier is connected with the air inlet of air blast, the membrane type oxygen-enriched generator is connected between the air inlet of the air outlet of air blast and vavuum pump, and the gas outlet of vavuum pump serial connection is by steam-water separator, air dryer, the air voltage-stablizer is connected with the combustion adjuvant atomizer with the air processor that air heater is formed; The combustion adjuvant deployment device is made up of combustion adjuvant storage tank, water tank, flowmeter, mixed flow container and pipe pressurizing pump, combustion adjuvant storage tank, water tank serial connection flowmeter are connected with mixed flow container, mix flow container serial connection flowmeter and be connected with the combustion adjuvant atomizer with the pipe pressurizing pump, the oxygen-enriched air that combustion adjuvant atomizer connection boiler will contain the combustion adjuvant that atomizes is blown into from the air inlet or the secondary wind inlet of boiler.
The invention has the beneficial effects as follows: the oxygen-enriched combustion-supporting technology is to improve energy utilization rate by local oxygen enriching, has improved in the stove flame temperature, accelerates burning velocity and promotes burning fully, reduce the ignition temperature of fuel, reduce the displacement after burning, increase heat utilization ratio, reduce coefficient of excess air.
Effects of energy saving and emission reduction of the present invention, equipment and operation conditions with boiler (kiln) are different and different, application case statistics from tens boilers and kiln, minimum coal saving rate is 5.7%, the highest coal saving rate reaches 25%, and the 670t/h pulverized-coal fired boiler coal saving rate of certain steam power plant is 8.34%, by above statistics as seen, the effects of energy saving and emission reduction of this technology improvement method is fine, and economic benefit is also fine.
Coal and oil combustion gas combustion adjuvant is that adding technology is fully emulsified in the pyroreaction still by producing, cell is sheared, can forms according to the component of its different performance.The capital equipment of oxygen-enriched combustion-supporting technology comprises film oxygen enriching device, dehumidification, stable-pressure device, increase blower fan and oxygen enrichment nozzle etc.This technology and coal-saving additive are used.
Coal and oil combustion gas combustion adjuvant fully mixes the back by atomizing generator and high-temperature oxygen-enriched wind and sends into the burning of burner hearth participation combustible by secondary wind or air blast.
Effects of energy saving and emission reduction outstanding feature of the present invention is that amount of energy saving is higher more stable, needn't transform former burner, and synthetic energy-saving discharge-reducing is effective, business accounting cost performance height, acceptant use.
As everyone knows, burning has three conditions: combustible, airborne oxygen, ignition temperature, add that the coal-fired combustion-supporting additive is combustion-supporting to have five effects at least: 1: be heated and put oxygen ignition temperature is reduced, increase combustion intensity, improve burn-off rate, reduce excess air coefficient, reduce noxious gas emission; 2: the microexplosion of being heated, reduce the combustible granularity, increase the specific area between the reacting phase, accelerate the anti-thermal velocity of burning; 3: catalyst can be accelerated the speed that positro is diffused into coal particle, exciting agent can make the vaporific coal-saving agent of moisture vapor accelerate water coal vapour combustion process increases heat, and alkaline transition-metal oxide is heated and puts oxygen in the different temperatures district step by step and strengthen strong oxidizing fire atmosphere and make its top layer electronics generation transition discharge radiant energy and increased the heat transfer rate of heat to the furnace wall; 4: remove flue gas system top layer coking raising boiler heat absorption efficiency preferably thereby coke cleaning agent can effectively improve ash fusion point and have; 5: the composite desulfate antismoke agent in combustion process, can catch and flue gas in sulfur monoxide, sulfur dioxide heat release, desulphurization during combustion effect in certain stove is arranged.
Description of drawings
Accompanying drawing 1 is the structural representation of oxygen-enriched air mixed blowing combustion adjuvant boiler energy-saving method and employed equipment thereof.
Description of reference numerals: air purifier 1, air blast 2, membrane type oxygen-enriched generator 3, vacuum meter 4, vavuum pump 5, steam-water separator 6, air dryer 7, air voltage-stablizer 8, reversal valve 9, air heater 10, combustion adjuvant storage tank 11, water tank 12, flowmeter 13, mixed flow container 14, booster pump 15, combustion adjuvant atomizer 16, boiler 17.
The specific embodiment
Explain to oxygen-enriched air mixed blowing combustion adjuvant boiler energy-saving method of the present invention and below the employed equipment work with reference to Figure of description.
The main points of method of the present invention are: combustion adjuvant atomizing back is mixed with oxygen enrichment wind send boiler or stove combustion-supporting with the raising fuel economy.
Realize the employed equipment of oxygen-enriched air mixed blowing combustion adjuvant boiler energy-saving method of the present invention, its structure is by the oxygen enrichment generating means, air processor, the heating atomization device, combustion adjuvant deployment device and boiler are formed, the oxygen enrichment generating means is by air purifier 1, air blast 2, membrane type oxygen-enriched generator 3 and vavuum pump 5 are formed, air purifier 1 is connected with the air inlet of air blast 2, membrane type oxygen-enriched generator 3 is connected between the air inlet of the air outlet of air blast 2 and vavuum pump 5, and the gas outlet of vavuum pump 5 serial connection is by steam-water separator 6, air dryer 7, air voltage-stablizer 8 is connected with combustion adjuvant atomizer 16 with the air processor that air heater 10 is formed; The combustion adjuvant deployment device is made up of combustion adjuvant storage tank 11, water tank 12, flowmeter 13, mixed flow container 14 and pipe pressurizing pump 15, combustion adjuvant storage tank 11, water tank 12 serial connection flowmeters 13 are connected with mixed flow container 14, mix flow container 14 serial connection flowmeters 13 and be connected with combustion adjuvant atomizer 16 with pipe pressurizing pump 15, the oxygen-enriched air that combustion adjuvant atomizer 16 connection boilers 17 will contain the combustion adjuvant that atomizes is blown into from the air inlet or the secondary wind inlet of boiler.
Enter that oxygen content is controlled at 27-30% in the oxygen-enriched air of boiler.
Enter in the oxygen-enriched air of boiler, combustion adjuvant content is controlled at 300-500 gram/coals per ton.
Between air voltage-stablizer and air heater, also be provided with reversal valve 9.
Embodiment:
Oxygen-enriched air mixed blowing combustion adjuvant boiler energy-saving method of the present invention and its processing and fabricating of employed equipment thereof are very simple and convenient, processing and fabricating gets final product shown in the by specification accompanying drawing, employed air purifier 1 in the device, air blast 2, membrane type oxygen-enriched generator 3, vacuum meter 4, vavuum pump 5, steam-water separator 6, air dryer 7, air voltage-stablizer 8, reversal valve 9, air heater 10, combustion adjuvant storage tank 11, water tank 12, flowmeter 13, mix flow container 14, booster pump 15, combustion adjuvant atomizer 16, boiler 17 is generalization construction equipment or boiler combustion equipment.
Oxygen-enriched air mixed blowing combustion adjuvant boiler energy-saving method of the present invention and employed equipment thereof are compared with prior art, have reasonable in design, simple in structure, be easy to processing, safe and reliable, characteristics such as effects of energy saving and emission reduction is remarkable, thereby, have good value for applications.
Except that the described technical characterictic of specification, be the known technology of those skilled in the art.

Claims (5)

1, oxygen-enriched air mixed blowing combustion adjuvant boiler energy-saving method is characterized in that, is combustion adjuvant atomizing back to be mixed with oxygen enrichment wind send boiler or stove combustion-supporting with the raising fuel economy.
2, the oxygen-enriched air mixed blowing combustion adjuvant boiler energy-saving device, it is characterized in that comprising the oxygen enrichment generating means, air processor, the heating atomization device, combustion adjuvant deployment device and boiler, the oxygen enrichment generating means is by air purifier, air blast, membrane type oxygen-enriched generator and vavuum pump are formed, air purifier is connected with the air inlet of air blast, the membrane type oxygen-enriched generator is connected between the air inlet of the air outlet of air blast and vavuum pump, and the gas outlet of vavuum pump serial connection is by dehydrator, drier, the air voltage-stablizer is connected with the combustion adjuvant atomizer with the air processor that air heat gas is formed; The combustion adjuvant deployment device is made up of combustion adjuvant storage tank, water tank, flowmeter, mixed flow container and pipe pressurizing pump, combustion adjuvant storage tank, water tank serial connection flowmeter are connected with mixed flow container, mix flow container serial connection flowmeter and be connected with the combustion adjuvant atomizer with the pipe pressurizing pump, the oxygen-enriched air that combustion adjuvant atomizer connection boiler will contain the combustion adjuvant that atomizes blows into from wind or secondary wind inlet.
3, the oxygen-enriched air mixed blowing combustion adjuvant boiler energy-saving device is characterized in that, oxygen content is controlled at 27-30% in the oxygen-enriched air.
4, method according to claim 1 is characterized in that the combustion adjuvant content in the oxygen-enriched air is controlled at 300-500 gram/coals per ton.
5, method according to claim 1 is characterized in that, also is provided with reversal valve between air voltage-stablizer and air heater.
CNA2008102377100A 2008-12-01 2008-12-01 Oxygen-enriched air mixed blowing combustion adjuvant boiler energy-saving method and employed equipment thereof Pending CN101413674A (en)

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Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101556039B (en) * 2009-05-14 2010-09-01 西安建筑科技大学 Oxygen-enriched burner
CN102221203A (en) * 2010-04-16 2011-10-19 必成玻璃纤维(昆山)有限公司 Fuel oil atomization device of smelting furnace burner
CN104676580A (en) * 2014-12-29 2015-06-03 王乾生 Method for simply and fundamentally treating greenhouse emissions of thermal power and cement industries and other coal-fired greenhouse emissions and corresponding furnace
CN105783020A (en) * 2016-04-21 2016-07-20 成都华西堂环保科技有限公司 Oxygen-rich low-nitrate combustion and denitration process of coal-fired boiler

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101556039B (en) * 2009-05-14 2010-09-01 西安建筑科技大学 Oxygen-enriched burner
CN102221203A (en) * 2010-04-16 2011-10-19 必成玻璃纤维(昆山)有限公司 Fuel oil atomization device of smelting furnace burner
CN104676580A (en) * 2014-12-29 2015-06-03 王乾生 Method for simply and fundamentally treating greenhouse emissions of thermal power and cement industries and other coal-fired greenhouse emissions and corresponding furnace
CN105783020A (en) * 2016-04-21 2016-07-20 成都华西堂环保科技有限公司 Oxygen-rich low-nitrate combustion and denitration process of coal-fired boiler
CN105783020B (en) * 2016-04-21 2018-07-27 成都华西堂环保科技有限公司 A kind of oxygen-enriched low nitrogen burning denitrating technique of coal-burning boiler

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Open date: 20090422