CN201555238U - Device for local oxygen enrichment and combustion assistance of boiler - Google Patents

Device for local oxygen enrichment and combustion assistance of boiler Download PDF

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Publication number
CN201555238U
CN201555238U CN2009202200399U CN200920220039U CN201555238U CN 201555238 U CN201555238 U CN 201555238U CN 2009202200399 U CN2009202200399 U CN 2009202200399U CN 200920220039 U CN200920220039 U CN 200920220039U CN 201555238 U CN201555238 U CN 201555238U
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CN
China
Prior art keywords
boiler
oxygen enrichment
water
vacuum pump
stabilizing
Prior art date
Application number
CN2009202200399U
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Chinese (zh)
Inventor
赵澍
刘振飞
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北京卓英特科技有限公司
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Priority to CN2009202200399U priority Critical patent/CN201555238U/en
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Publication of CN201555238U publication Critical patent/CN201555238U/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 utility model relates to a device for local oxygen enrichment and combustion assistance of a boiler, comprising an air filter and flow control system, a water circulation system, a preheating system, oxygen enrichment nozzles and an automatic control system, wherein a fan, a film device, a water ring vacuum pump, an adjusting valve and a vacuum meter form the air filter and flow control system, an air-water separator, a dehumidifying device and a voltage-stabilizing system form the water circulation system, and the air-water separator, the dehumidifying device and the voltage-stabilizing system adopt a whole structure; the fan, the film device, the water ring vacuum pump, the air-water separator, the dehumidifying device, the voltage-stabilizing system, the preheating system and the oxygen enrichment nozzle are connected in sequence, an air tube between the film device and the water ring vacuum pump is provided with the adjusting valve, and the air tube between the adjusting valve and the water ring vacuum pump is provided with the vacuum meter; and the oxygen enrichment nozzle is made of sulphur-resisting and high-temperature-resisting steel tube material, and a plurality of groups of oxygen enrichment nozzles are arranged inside a boiler body in a staggered way.

Description

A kind of device that is used for the local oxygen-enriched combustion-supporting of boiler

Technical field

The utility model relates to a kind of device that improves boiler combustion efficiency, especially adopt membrane separation technique that oxygen-enriched air is provided, substitute portion of air, reach the efficiency of combustion, energy savings, the minimizing that improve boiler pollute purpose to environment because fuel combustion is insufficient a kind of device that is used for the local oxygen-enriched combustion-supporting of boiler.

Background technology

China is world today's coal-burned industrial boiler production and uses maximum countries, and to the end of the year 1998, China is being 50.12 ten thousand with Industrial Boiler installation total amount, about 880,000 MW, and total amount is 3 times of station boiler, year about 1,400,000,000 tons of standard coals of consumption coal.Chinese industrial boiler average size is little, is 1.7MW/ platform (2.5t/h) that>10t/h accounts for 75% less than 20%, 2~10t/h boiler, and≤1t/h boiler accounts for 5%.The Industrial Boiler kind is comparatively single, and the grate firing chain furnace accounts for 65% of total platform number, and reciprocal grate accounts for 20%, and the stationary furnace grate furnace accounts for 10%, and recirculating fluidized bed accounts for 3~5%, and other type of furnace accounts for 1%.Adopt the local oxygen-enriched combustion-supporting equipment technology reconstruction of embrane method coal-burning boiler, can save standard coal more than 100,000,000 tons every year, and flue dust reduces more than 20% (about 2,000,000 tons) simultaneously, and pollutants such as the CO in the flue gas are owing to burning descends fully and significantly.Improve the efficiency of combustion of coal-burning boiler, have potentiality energy-conservation and the reduction of discharging pollutant, have the important energy saving environment protection significance.

The unreasonable of China also is not strictly controlled with oil at present.The heavy oil consumption figure is excessive, since nineteen ninety, China's fuel oil consumption figure is stabilized in 3200~3,600 ten thousand tons always, from 2003, consumption figure has been broken through 4,000 ten thousand tons, wherein is used as all kinds of boilers and the Industrial Stoves fuel of industrial departments such as electric power, petroleum and petrochemical industry, metallurgy, iron and steel more than 70%.Adopt the local oxygen-enriched combustion-supporting equipment technology reconstruction of embrane method fuel oil stove, can save fuel oil more than 3,000,000 tons every year, has the important energy saving meaning.

About 500 billion cubic meters of China's natural gas total quantity consumed in 2005, natural gas is mainly used in fields such as chemical industry and generating, proportion is that wherein chemical fertilizer production accounts for 38.3% more than 87% in natural gas consumption, occupy domestic gas in the natural gas consumption structure proportion less than 11%.Adopt the local oxygen-enriched combustion-supporting equipment technology reconstruction of embrane method combustion gas stove, can save the above natural gas of 25 billion cubic meters every year, have the important energy saving meaning.

The local oxygen-enriched combustion-supporting equipment and technology of embrane method uses Rich Oxygen Amount only to be 0.5~10% of required air quantity, and the blow rate required and air inducing amount all will significantly descend (reducing 5~50% approximately) originally.Carried out preliminary test at boilers such as fuel oil, fire coal and combustion gas, social benefit and economic benefit are all very remarkable: average fuel savings 10.9%, volume increase 9.2%, product quality also has raising, the also corresponding prolongation of boiler life is because full combustion of fuel significantly improves environmental aspect, fume emission all is lower than national environmental standard (with over-emitting black exhaust once before the oxygen enrichment), and the investment payback time is generally less than 1 year.

The utility model content

The purpose of this utility model provides a kind of device that is used for the local oxygen-enriched combustion-supporting of boiler, not only overcome the defective of existing product, and improved the range of application of inferior fuel, give full play to the performance of high-grade fuel, all can use the boiler of all fuel (comprising fire coal, combustion gas and fuel oil).

The purpose of this utility model is to be achieved through the following technical solutions:

A kind of device that is used for the local oxygen-enriched combustion-supporting of boiler, comprise air filtration and flow control system, water circulation system, pre-heating system, oxygen enrichment nozzle and automatic control system, described blower fan, film device, water-ring vacuum pump, control valve and vacuum meter are formed air filtration and flow control system, moisture trap, dehumidifying device, voltage-stabilizing system are formed water circulation system, the as a whole structure of described moisture trap, dehumidifying device and voltage-stabilizing system; Described blower fan, film device, water-ring vacuum pump, moisture trap, dehumidifying device, voltage-stabilizing system, pre-heating system and oxygen enrichment nozzle are connected successively, tracheae between described film device and the water-ring vacuum pump is provided with control valve, and the tracheae between described control valve and the water-ring vacuum pump is provided with vacuum meter; Described oxygen enrichment nozzle is installed on the boiler.

Described pre-heating system is selected the heat-resistant tube material for use.

Described oxygen enrichment nozzle is the high-temperature steel of an anti-sulphur tubing matter, organizes oxygen enrichment nozzle mutual dislocation more and is installed in the boiler.

The beneficial effect of the device of the local oxygen-enriched combustion-supporting that is used for boiler described in the utility model is: reasonable in design, simple in structure, easy to use; Compare with normal air is combustion-supporting, have the characteristics of fuel-economizing, economize on electricity, quantity of steam is regulated more flexible, has reduced the smoke evacuation lingemann blackness, but also has stablized the boiler situation, has prolonged boiler life.

Description of drawings

Fig. 1 is the structural representation of the device of the described local oxygen-enriched combustion-supporting that is used for boiler of the utility model embodiment;

Fig. 2 is the mounting means schematic diagram of nozzle of the device of the described local oxygen-enriched combustion-supporting that is used for boiler of the utility model embodiment.

Among the figure:

1, ventilation blower; 2, film device; 3, water-ring vacuum pump; 4, moisture trap; 5, dehumidifying device; 6, voltage-stabilizing system; 7, pre-heating system; 8, boiler; 9, oxygen enrichment nozzle; 10, control valve; 11, vacuum meter.

The specific embodiment

As shown in Figure 1, the described device that is used for the local oxygen-enriched combustion-supporting of boiler of the utility model embodiment, comprise ventilation blower 1, film device 2, water-ring vacuum pump 3, moisture trap 4, dehumidifying device 5, voltage-stabilizing system 6, pre-heating system 7 and oxygen enrichment nozzle 9, control valve 10 and vacuum meter 11, described blower fan 1, film device 2, water-ring vacuum pump 3, moisture trap 4, dehumidifying device 5, voltage-stabilizing system 6, pre-heating system 7 is connected successively with oxygen enrichment nozzle 9: blower fan 1 is by the air inlet of tracheae junctional membrane device 2, the air outlet of film device 2 connects water-ring vacuum pump 3 by tracheae, tracheae between described film device 2 and the water-ring vacuum pump 3 is provided with control valve 10, can control the oxygen-rich stream amount by control valve 10, the tracheae between described control valve 10 and the water-ring vacuum pump 3 is provided with vacuum meter 11; Described water-ring vacuum pump 3 also connects moisture trap 4 by tracheae, moisture trap 4 connects dehumidifying device 5, the exit of dehumidifying device 5 connects voltage-stabilizing system 6, and voltage-stabilizing system 6 connects oxygen enrichment nozzle 9 by tracheae, is provided with pre-heating system 7 between described voltage-stabilizing system 6 and the oxygen enrichment nozzle 9; Described oxygen enrichment nozzle 9 is installed on the boiler 8.

Described moisture trap 4, dehumidifying device 5 and voltage-stabilizing system 6 as a whole structures.

Described pre-heating system 7 is selected the heat-resistant tube material for use, and its resistance is less than 0.2KPa, and the oxygen enrichment temperature is more than 100 ℃ after the preheating.

As shown in Figure 2, described oxygen enrichment nozzle 9 is the high-temperature steel of an anti-sulphur tubing matter, many group oxygen enrichment nozzle 9 mutual dislocation are installed in the boiler 8, many group oxygen enrichment nozzles 9 make in the burner hearth of boiler 8 flue gas form " S " type to flow, the overheavy firing effect, described oxygen enrichment nozzle 9 is adjustable nozzle structures, driving oxygen enrichment nozzle 9 by linear electric motors moves up and down, measure temperature by the temperature sense sheet simultaneously, determine the position by control chip then, the place that oxygen enrichment is added in need most makes burning more abundant, and the heat energy utilization rate is higher.

The described device that is used for the local oxygen-enriched combustion-supporting of boiler of the utility model embodiment, in use, be that local oxygen enriching technology and combustion supporting technology are organically combined, utilize the infiltration rate difference when each component sees through film device 2 in the air, under pressure differential drives, the oxygen-enriched air that oxygen is preferentially obtained by film device 2, then the oxygen enrichment preheating is added the place that needs most in the boiler 8 by oxygen enrichment nozzle 9, make fuel in this burning fully fully in time, thereby supplying products efficient heat as much as possible, improve the combination property of boiler 8 and the purpose of pollution abatement fundamentally, reach the purpose of energy-conserving and environment-protective.

Its idiographic flow is: through air cleaner remove>air of 0.5 μ dust sends into film device 2 by blower fan 1 and separates, wherein rich nitrogen is discharged by the outlet of film device 2, and oxygen enrichment is extracted out through moisture trap 4 by water-ring vacuum pump 3, dehumidifying device 5, after voltage-stabilizing system 6 is removed moisture content and voltage stabilizing, utilize the used heat of boiler 8 that oxygen enrichment is heated to the back flame kernel of delivering to burner hearth by 4 interlaced arrangement special-purpose oxygen enrichment nozzle 9 about a meter on fire grate more than 100 ℃ again, make fuel in the overheavy firing of burner hearth center, improve flame temperature, make radiant heat significantly increase, because radiant heat is directly proportional with the difference of the biquadratic of flame temperature and water screen tube or heat exchanger tube temperature.

Above-described embodiment, the utility model specific embodiment a kind of more preferably just, the common variation that those skilled in the art are done in the technical program scope and replacing all should be included in the protection domain of the present utility model.

Claims (2)

1. device that is used for the local oxygen-enriched combustion-supporting of boiler, comprise air filtration and flow control system, water circulation system, pre-heating system, oxygen enrichment nozzle and automatic control system, it is characterized in that: described blower fan, film device, water-ring vacuum pump, control valve and vacuum meter are formed air filtration and flow control system, moisture trap, dehumidifying device, voltage-stabilizing system are formed water circulation system, the as a whole structure of described moisture trap, dehumidifying device and voltage-stabilizing system; Described blower fan, film device, water-ring vacuum pump, moisture trap, dehumidifying device, voltage-stabilizing system, pre-heating system and oxygen enrichment nozzle are connected successively, tracheae between described film device and the water-ring vacuum pump is provided with control valve, and the tracheae between described control valve and the water-ring vacuum pump is provided with vacuum meter.
2. the device that is used for the local oxygen-enriched combustion-supporting of boiler according to claim 1 is characterized in that: described oxygen enrichment nozzle is the high-temperature steel of an anti-sulphur tubing matter, organizes oxygen enrichment nozzle mutual dislocation more and is installed in the boiler.
CN2009202200399U 2009-10-23 2009-10-23 Device for local oxygen enrichment and combustion assistance of boiler CN201555238U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN2009202200399U CN201555238U (en) 2009-10-23 2009-10-23 Device for local oxygen enrichment and combustion assistance of boiler

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Application Number Priority Date Filing Date Title
CN2009202200399U CN201555238U (en) 2009-10-23 2009-10-23 Device for local oxygen enrichment and combustion assistance of boiler

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CN201555238U true CN201555238U (en) 2010-08-18

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Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102418934A (en) * 2011-12-16 2012-04-18 刘爱国 Membrane oxygen-enriched combustion-supporting device
CN102512920A (en) * 2011-12-27 2012-06-27 广东大众农业科技股份有限公司 Coal-fired boiler tail gas membrane filtration enriched oxygen recycling method and device
CN102563686A (en) * 2011-12-26 2012-07-11 洛阳大泽节能环保科技有限公司 Membrane-method oxygen-enriched combustion-supporting boiler system
CN102767840A (en) * 2011-05-03 2012-11-07 安徽中企能源管理有限公司 Oxygen-enriched and combustion-supporting boiling burner assembly of industrial boiler
CN102913938A (en) * 2012-11-01 2013-02-06 北京卓英特科技有限公司 Film method local oxygen-enriched combustion supporting system applied to energy conservation and emission reduction of industrial kiln
CN103123119A (en) * 2013-01-30 2013-05-29 昆明钢铁集团有限责任公司 Method and device for iron and steel enterprise rich oxygen use
CN104613750A (en) * 2015-02-09 2015-05-13 池州冠华黄金冶炼有限公司 Reflection type pure oxygen combustion device for anode furnace

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102767840A (en) * 2011-05-03 2012-11-07 安徽中企能源管理有限公司 Oxygen-enriched and combustion-supporting boiling burner assembly of industrial boiler
CN102418934A (en) * 2011-12-16 2012-04-18 刘爱国 Membrane oxygen-enriched combustion-supporting device
CN102563686A (en) * 2011-12-26 2012-07-11 洛阳大泽节能环保科技有限公司 Membrane-method oxygen-enriched combustion-supporting boiler system
CN102512920A (en) * 2011-12-27 2012-06-27 广东大众农业科技股份有限公司 Coal-fired boiler tail gas membrane filtration enriched oxygen recycling method and device
CN102512920B (en) * 2011-12-27 2014-05-07 广东大众农业科技股份有限公司 Coal-fired boiler tail gas membrane filtration enriched oxygen recycling method and device
CN102913938A (en) * 2012-11-01 2013-02-06 北京卓英特科技有限公司 Film method local oxygen-enriched combustion supporting system applied to energy conservation and emission reduction of industrial kiln
CN103123119A (en) * 2013-01-30 2013-05-29 昆明钢铁集团有限责任公司 Method and device for iron and steel enterprise rich oxygen use
CN104613750A (en) * 2015-02-09 2015-05-13 池州冠华黄金冶炼有限公司 Reflection type pure oxygen combustion device for anode furnace

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GR01 Patent grant
EXPY Termination of patent right or utility model
CF01 Termination of patent right due to non-payment of annual fee

Granted publication date: 20100818

Termination date: 20141023