CN205640978U - Energy -conserving combustion system of nitrogen oxide zero release oxygen boosting - Google Patents
Energy -conserving combustion system of nitrogen oxide zero release oxygen boosting Download PDFInfo
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- CN205640978U CN205640978U CN201620408967.8U CN201620408967U CN205640978U CN 205640978 U CN205640978 U CN 205640978U CN 201620408967 U CN201620408967 U CN 201620408967U CN 205640978 U CN205640978 U CN 205640978U
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- Y—GENERAL 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
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E20/00—Combustion technologies with mitigation potential
- Y02E20/34—Indirect CO2mitigation, i.e. by acting on non CO2directly related matters of the process, e.g. pre-heating or heat recovery
Abstract
The utility model discloses an energy -conserving combustion system of nitrogen oxide zero release oxygen boosting. Wherein, this system comprises oxygen supply unit, fuel supply unit, oxygen -enriched combustor, the heating device who takes furnace combustion space, single tower desulfurization dust remover, flue gas reflux unit, flue gas line, process piping etc.. The oxygen -rich gas that this system obtained the air through the separation regards as the oxygen of burning usefulness, substitutes regard as the required oxygen of burning in sending the air into furnace, participates in reaction of combustion and gets rid of nitrogen oxide's formation through stoping nitrogen gas to get into furnace, owing to there is not unnecessary nitrogen gas to participate in combustion processes, comparing the total amount that burning back flue gas produced that has significantly reduced with traditional air burning mode, so heating device discharges fume the heat loss of taking away and also obtain the reduction, has practiced thrift fuel, has reduced the energy consumption. The discharge section of heating device flue gas is arranged in to single tower desulfurization dust remover, can clear away harmful substance such as sulphide in the flue gas, dust.
Description
Technical field
This utility model relates to fossil energy combustion field, in particular to a kind of oxygen-enriched joint of nitrogen oxides zero-emission
Can combustion system.
Background technology
The survival and development of the mankind be unable to do without the energy.The life style of modern humans, not only a large amount of consumption resources and energy,
And also discharge substantial amounts of pollutant every day, earth environment is caused serious impact.Energy and environment are societies
Two large problems.The energy demand of 87% derives from Fossil fuel in the world, during these fuel combustions, can arrange to air
The carbon dioxide of amplification quantity, wherein coal is the abundantest fossil fuel resource, accounts for world's fossil fuel reserves
More than 70%.Burning of coal and utilize the resource and environmental problem caused, causes the extensive attention of international community further.
China is one of a few country with coal as main energy sources in the world, according to statistics, and China 90% titanium dioxide
Sulfur, 67% nitrogen oxides, 70% smoke discharge amount come from the burning of coal.Wherein, coal fired power plant, coal-fired industry pot
The smoke emissioning pollution problem such as stove, coal-fired furnace kiln is the most prominent.
GB13223-2011 was implemented from 1 day January in 2012, the soot emissions of coal-burning boiler are limited to≤
30mg/Nm3, higher to territorial development density, environmental bearing capacity starts to weaken, or atmospheric environment capacity is less, life
State vulnerable environment, is susceptible to serious atmospheric problem of environmental pollution and needs strictly to control the area of Air Pollutant Emission
The emission limit of coal-burning boiler flue dust is 20mg/Nm3, improve nearly one than the discharge index performed by GB13223-2003
Times.Zhujiang River triangle, the Yangtze River Delta, Beijing-tianjin-tangshan Area are as key area, and the environmental protection pressure faced also can ratio one
As area big.
The sulfur dioxide SO2 emission limit of coal-burning boiler is controlled at 100mg/m by GB13223-20113, except 2003
Boiler that on December was constructed and put into operation before 31, W type flame hearth boiler, existing CFBB take 200mg/m3
Emission limit outside, the thermal power generation boiler sulfur dioxide SO2 emission limit of key area is controlled at 50mg/m3。
The GB13223-2011 nitrogen oxides NO to coal-burning boilerXEmission limit controls at 100mg/m3, except 2003
Boiler that December was constructed and put into operation before 31 days, dimorphism flame hearth boiler, existing CFBB take 200mg/m3
Emission limit outside, the thermal power generation boiler nitrogen oxides NO to key areaXEmission limit controls at 100mg/m3,
This standard reaches the discharge standard of even better than developed country.
In addition GB13223-2011 also increases the heavy metal contaminants emission limit of mercury and mercuric compounds newly.To coal-burning boiler
Mercury and mercuric compounds discharge is limited to 0.03mg/m3。
China greatly develops using fuel oil and combustion gas as the oil-gas two-way boiler of fuel at present, and making every effort to can be to greatest extent
The potential playing the energy utilizes, and realizes again minimum pollutant emission simultaneously, makes fossil fuel resource reach efficient, clear
The purpose of clean utilization.
If not taking to reduce sulfur dioxide, the measure of discharged nitrous oxides, dioxy for fuel boiler in correlation technique
Change sulfur, discharged nitrous oxides concentration will be unable to problem up to standard, the most not yet proposes effective solution.
Utility model content
This utility model embodiment provides a kind of oxygen-enriched energy-saving combustion system of nitrogen oxides zero-emission, at least to solve phase
If fuel boiler is not taked to reduce sulfur dioxide, the measure of discharged nitrous oxides, sulfur dioxide, nitrogen oxygen in the technology of pass
Compound concentration of emission will be unable to technical problem up to standard.
An aspect according to this utility model embodiment, it is provided that a kind of nitrogen oxides zero-emission oxygen-enriched energy-saving combustion system
System, including: oxygen feed unit, fuel supply unit, oxygen-enriched burner, the heater in band hearth combustion space,
Single column desulfurizing dust-collector, smoke reflux device and flue, wherein, oxygen feed unit and fuel supply unit
It is connected with oxygen-enriched burner pipeline respectively；Oxygen-enriched burner is connected with heater；Heater and single column desulfurization
Pipeline of dust collector is connected；Single column desulfurizing dust-collector is connected with flue；Smoke reflux device respectively with oxygen-enriched combustion
Burner is connected with flue.
Further, oxygen-enriched burner is connected with the supply side of oxygen feed unit, wherein, and oxygen-enriched burner requisite oxygen
Gas from liquid oxygen tank or oxygen pipeline or is provided by oxygen feed unit, and oxygen feed unit includes: aerator or air
Compressor, air purifier and air cushioning tank pipeline are sequentially connected and connect；Air cushioning tank respectively with absorption A tower and suction
Attached B tower inlet pipeline is connected；Absorption A tower and absorption B tower inlet pipeline depend on vacuum pump and denitrogen deafener pipeline
Secondary it is connected；Absorption A tower and absorption B tower outlet conduit are sequentially connected with oxygen surge tank and oxygen compressor and connect, or
Aerator or air compressor, air cushioning tank, air purifier and electric heater pipeline are sequentially connected and connect；Electrical heating
Device is connected with membrane separator inlet pipeline；The primary outlet of membrane separator and vacuum pump, oxygen surge tank and oxygen
Compressor Pipes is sequentially connected and connects, second outlet and control valve and the denitrogen deafener pipeline phase successively of membrane separator
Connect, or air compressor, Precooling unit, molecular sieve-4 A tower, molecular sieve B tower and cold box unit pipeline are sequentially connected
Connect；Main heat exchanger within cold box unit and decompressor respectively and between fractionating column pipeline be connected；The first of fractionating column
Outlet be sequentially connected connect with nitrogen buffer tank, nitrogen compressor pipeline, fractionating column second outlet and oxygen surge tank,
Oxygen compressor pipeline is sequentially connected and connects.
Further, oxygen-enriched burner is connected with the supply side of fuel supply unit, wherein, and the required combustion of oxygen-enriched burner
Material derives from fuel oil or the fuel gas of pipeline connection or is provided by fuel supply unit, and fuel supply unit includes: mill
Powder drying unit is connected with fine coal pressurized delivered unit pipe；Burner respectively with air compressor (or aerator, powder
Coal pressurized delivered unit is connected with steam suppling tube road；Burner by gasification furnace respectively with slagging-off pond, cooler tube
Road is connected；Cooler is connected with dry method dust, wet scrubbing pipeline.
Further, oxygen feed unit is connected with oxygen regulating valve, and oxygen regulating valve is connected with oxygen-enriched burner；Combustion
Material feed unit is connected with fuel control valve, and fuel control valve is connected with oxygen-enriched burner；Oxygen-enriched burner with add hot charging
Put connection；Wherein, the oxygen that the fuel that fuel supply unit provides and oxygen feed unit provide is in oxygen-enriched burner
It is sufficiently mixed, is lighted by auto lighting switch, and popped one's head in by ion probe or ultraviolet and flame-observing hole detection burning
Situation.
Further, the hearth combustion space entry of heater is connected with oxygen-enriched burner, and the tail gas of heater goes out
Mouthful pipeline is connected with single column desulfurizing dust-collector, wherein, is provided with the rotating jet flow district of side towards the fire and non-to fire in heater
The convection current heat absorption district in face, wherein, closed cavity is made by metal tube or metallic plate by heat absorption district, is flowable in cavity
Absorber.
Further, single column desulfurizing dust-collector includes: calper calcium peroxide allotter or sulfur dioxide treatment module take off with dedusting
The import of sulfur room is connected；Clean air chamber is connected with dedusting and desulfurization chamber；Dedusting and desulfurization chamber is connected with taper hopper；
Taper hopper is connected with ash bucket or ash bin.
Further, smoke reflux device includes: air-introduced machine respectively with single column desulfurizing dust-collector outlet conduit and oxygen-enriched
Burner is connected with the joint portion of the burner hearth of heater, wherein, and the part cigarette of single column desulfurizing dust-collector outlet drain
Gas is back to the joint portion of oxygen-enriched burner and the burner hearth of heater, air-introduced machine entrance and regulation veneer by air-introduced machine
Valve is connected, and regulation single plate valve is used for regulating smoke backflow amount.
Further, system also includes: temperature controller, is connected with oxygen regulating valve, fuel control valve, wherein,
Temperature controller regulates oxygen respectively by control oxygen regulating valve and fuel control valve and fuel enters oxygen-enriched burner
Uninterrupted is to realize heat energy conveying balance.
In this utility model embodiment, air is passed through isolated by the oxygen-enriched energy-saving combustion system of nitrogen oxides zero-emission
Oxygen rich gas as the oxygen of burning, substitute and traditional air sent into as the oxygen needed for burning in burner hearth, lead to
Cross prevention nitrogen to enter burner hearth participation combustion reaction and get rid of the generation of nitrogen oxides, simultaneously because there is no unnecessary nitrogen
Participate in combustion process, the total amount that after greatly reducing burning compared with traditional air burning mode, flue gas produces, therefore
The heat loss that heater smoke evacuation is taken away also is reduced, and has saved fuel, has reduced energy consumption.Single column desulfurizing dust-collector
It is placed in the discharge section of heater flue gas, removes the harmful substances such as the sulfide in flue gas, dust.This system can have
Effect ground stops the generation of nitrogen oxides in heater combustion process, reduce after heater burning sulfur dioxide in smoke evacuation,
The content of dust, reduces the total amount of heater combustion exhaust gas and the heat loss taken away, has reached the effect of energy-saving and emission-reduction.
Accompanying drawing explanation
Accompanying drawing described herein is used for providing being further appreciated by of the present utility model, constitutes the part of the application,
Schematic description and description of the present utility model is used for explaining this utility model, is not intended that of the present utility model
Improper restriction.In the accompanying drawings:
Fig. 1 is the total technological process of the oxygen-enriched energy-saving combustion system of nitrogen oxides zero-emission according to this utility model embodiment
Schematic diagram；
Fig. 2 is the process flow diagram of a kind of optional oxygen feed unit according to this utility model embodiment；
Fig. 3 is the process flow diagram of the another kind of optional oxygen feed unit according to this utility model embodiment；
Fig. 4 is the process flow diagram of another the optional oxygen feed unit according to this utility model embodiment；
Fig. 5 is the process flow diagram of a kind of optional fuel supply unit according to this utility model embodiment；With
And
Fig. 6 is the schematic diagram of the internal structure according to this utility model embodiment single column desulfurizing dust-collector.
Detailed description of the invention
In order to make those skilled in the art be more fully understood that this utility model scheme, real below in conjunction with this utility model
Execute the accompanying drawing in example, the technical scheme in this utility model embodiment is clearly and completely described, it is clear that institute
The embodiment described is only the embodiment of this utility model part rather than whole embodiments.Based on this practicality
Embodiment in novel, those of ordinary skill in the art obtained under not making creative work premise all its
His embodiment, all should belong to the scope of this utility model protection.
It should be noted that term " first " in specification and claims of the present utility model and above-mentioned accompanying drawing,
" second " etc. are for distinguishing similar object, without being used for describing specific order or precedence.Should manage
Solve the data so used can exchange in the appropriate case, in order to embodiment of the present utility model described herein can
Implement with the order in addition to those here illustrating or describing.Additionally, term " includes " and " having " with
And their any deformation, it is intended that cover non-exclusive comprising, such as, contain a series of unit process,
System, product or equipment are not necessarily limited to those unit clearly listed, but can include the most clearly listing or
For other unit that these processes, product or equipment are intrinsic.
According to this utility model embodiment, it is provided that the embodiment of a kind of oxygen-enriched energy-saving combustion system of nitrogen oxides zero-emission,
This system can stop NO_x formation in heater combustion process effectively, discharges fume after reducing heater burning
Middle sulfur dioxide, the content of dust, reduce the total amount of heater combustion exhaust gas and the problems such as the heat loss taken away.Should
System can by oxygen feed unit, fuel supply unit, oxygen-enriched burner, the heater in band hearth combustion space,
Single column desulfurizing dust-collector, smoke reflux device, flue gas pipeline, process pipeline etc. form.This system described can be applied
In fields such as oil, chemical industry, thermal power plant, city thermal, metallurgy, coking.
Fig. 1 is the total technological process of the oxygen-enriched energy-saving combustion system of nitrogen oxides zero-emission according to this utility model embodiment
Schematic diagram, as described in Figure 1, this system may include that the supply of oxygen feed unit 1, oxygen regulating valve 2, fuel is single
Unit 3, fuel control valve 4, oxygen-enriched burner 5, the heater 6 in band hearth combustion space, single column desulfurizing dust-collector
7, chimney 8, regulation single plate valve 9, air-introduced machine 10, temperature controller 11, specifically:
As it is shown in figure 1, oxygen feed unit 1 is connected with oxygen regulating valve 2 pipeline, oxygen regulating valve 2 is with oxygen-enriched
Burner 5 pipeline is connected；Fuel supply unit 3 is connected with fuel control valve 4 pipeline, fuel control valve 4 with
Oxygen-enriched burner 5 pipeline is connected；Oxygen-enriched burner 5 is connected with the heater 6 in band hearth combustion space, band
The heater 6 in hearth combustion space is connected with single column desulfurizing dust-collector 7 pipeline, single column desulfurizing dust-collector 7 and cigarette
Chimney 8 pipeline is connected；Oxygen-enriched burner 5 depends on air-introduced machine 10, regulation single plate valve 9, chimney 8 (import) pipeline
Secondary it is connected；Temperature controller 11 is connected with oxygen regulating valve 2, fuel control valve 4.
It should be noted that the technological process of this system can be followed successively by: fuel supply unit 1 and oxygen feed unit
3-----oxygen-enriched burner 5-----heater 6------desulfurizing dust-collector 7-----smoke backflow 9 and 10-----
The work process such as chimney 8.Air is passed through the oxygen rich gas oxygen as burning of isolated by this system, substitutes
Traditional being sent into by air in heating furnace as the oxygen needed for burning, by stoping nitrogen to enter burner hearth, to participate in burning anti-
Answer and get rid of the generation of nitrogen oxides, simultaneously because do not have unnecessary nitrogen to participate in combustion process, with traditional air combustion
Burning mode compares the total amount that after greatly reducing burning, flue gas produces, and the heat loss that therefore heater smoke evacuation is taken away also obtains
To reducing, save fuel, reduced energy consumption.Meanwhile, single column desulfurizing dust-collector is placed in the discharge of heater flue gas
Section, removes the harmful substances such as the sulfide in flue gas, dust.
Separately below to the subsystems in this oxygen-enriched energy-saving combustion system of nitrogen oxides zero-emission, may include that oxygen
Gas feed unit, fuel supply unit, oxygen-enriched combustion system, heater, single column desulfurizing dust-collector and smoke backflow
Device describes in detail, specifically:
Alternatively, the oxygen of oxygen-enriched burner is connected with the supply side of oxygen feed unit, and the generation of oxygen can be adopted
By spatial division technology, it is possible to use " air pressure swing absorption process ", " method that air film filters ", " air deep-cooling processing
Method ", the method such as " come to liquid oxygen tank or oxygen pipeline " obtain oxygen.Introduce above-mentioned oxygen acquisition side separately below
The technological process of the oxygen feed unit of method and correspondence thereof:
Air pressure swing absorption process
Fig. 2 is the process flow diagram of a kind of optional oxygen feed unit according to this utility model embodiment, as
Shown in Fig. 2, the implication that label in Fig. 2 represents be respectively as follows: 1-aerator or air compressor, 2-air cleaning,
3-air cushioning tank, 4-absorption A tower, 5-absorption B tower, 6-oxygen surge tank, 7-vacuum pump, 8-denitrogen deafener,
9-oxygen compressor.
As in figure 2 it is shown, the technological process utilizing air pressure swing absorption process to obtain oxygen can be described as: aerator 1
(or air compressor machine air compressor) is sequentially connected connects with air purifier 2 and air cushioning tank 3 pipeline；May be used for
Utilizing aerator 1 (or air compressor machine air compressor) to carry out air compression, the humid air after compression is through air purifier 2
Removing oil removing and water, satisfactory air enters air cushioning tank 3.Air cushioning tank 3 respectively with absorption A tower 4 and
Absorption B tower 5 inlet pipeline is connected, and absorption A tower 4 and absorption B tower 5 inlet pipeline disappear with vacuum pump 7 and denitrogen
Sound device 8 pipeline is sequentially connected and connects, absorption A tower 4 and absorption B tower 5 outlet conduit and oxygen surge tank 6 and oxygen pressure
Contracting machine 9 is sequentially connected and connects；May be used for utilizing absorption A tower 4 and absorption molecular sieve within B tower 5 to carry out in air
Nitrogen and oxygen separating, the nitrogen after separation is discharged in air through vacuum pump 7 and denitrogen deafener 8, the oxygen of acquisition
It is delivered to the heater in this utility model system through oxygen surge tank 6 and oxygen compressor 9.
The method that air film filters
Fig. 3 is the process flow diagram of the another kind of optional oxygen feed unit according to this utility model embodiment,
As it is shown on figure 3, the implication that the label in Fig. 3 represents is respectively as follows: 1-aerator or air compressor, 2-air cushioning
Tank, 3-air purifier, 4-electric heater, 5-membrane separator, 6-vacuum pump, 7-oxygen surge tank, 8-oxygen pressure
Contracting machine, 9-denitrogen deafener.
As it is shown on figure 3, the technological process that the method utilizing air film to filter obtains oxygen can be described as: aerator 1
(or air compressor machine air compressor) is sequentially connected with air cushioning tank 2, air purifier 3 and electric heater 4 pipeline
Connect；May be used for utilizing aerator 1 (or air compressor machine air compressor) to carry out air compression, the humid air after compression
Entering air cushioning tank 2, then go oil removing and water through air purifier 3, satisfactory air enters electric heater 4,
Carry out air heating.Electric heater 4 is connected with membrane separator 5 inlet pipeline, the primary outlet of membrane separator 5
Being sequentially connected connect with vacuum pump 6, oxygen surge tank 7 and oxygen compressor 8 pipeline, second of membrane separator 5 goes out
Mouth is sequentially connected connects with control valve and denitrogen deafener 9 pipeline；The air that may be used for utilizing heating enters membrance separation
Device 5, the polymer compound film in membrane separator 5, carry out under certain infiltration motive force effect nitrogen in air and
Oxygen separating, the nitrogen after separation is discharged in air through controlling valve and denitrogen deafener 9, and the oxygen of acquisition is through oxygen
Surge tank 7 and oxygen compressor 8 are delivered to the heater in this utility model system.
The method of air deep-cooling processing
Fig. 4 is the process flow diagram of another the optional oxygen feed unit according to this utility model embodiment,
As shown in Figure 4, the implication that the label in Fig. 4 represents is respectively as follows: 1-air compressor, 2-Precooling unit, 3-molecule
Sieve A tower, 4-molecular sieve B tower, 5-cold box unit, 6-oxygen surge tank, 7-oxygen compressor, 8-nitrogen buffer tank,
9-nitrogen compressor, 10-main heat exchanger, 11-decompressor, 12-fractionating column.
As shown in Figure 4, the technological process utilizing air deep-cooling processing method to obtain oxygen can be described as: air compresses
Machine 1 is sequentially connected connects with Precooling unit 2, molecular sieve-4 A tower 3, molecular sieve B tower 4 and cold box unit 5 pipeline；Permissible
For utilizing air compressor 1 and carrying out air compression, it is cold that the humid air entrance Precooling unit 2 after compression carries out air
But, cooling air respectively enters molecular sieve-4 A tower 3 and molecular sieve B tower 4, and the moisture in air and carbon dioxide are gone
Except clean, satisfactory air enters cold box unit 5.Main heat exchanger 10 within cold box unit 5 and decompressor 11
With pipeline is connected between fractionating column 12, fractionating column 12 first outlet is managed with nitrogen buffer tank 8, nitrogen compressor 9
Road is sequentially connected and connects, and fractionating column 12 second outlet is sequentially connected connects with oxygen surge tank 6, oxygen compressor 7 pipeline；
May be used for utilizing air to enter in cold box unit 5, do work air by gaseous state through main heat exchanger 10 and decompressor 11
It is converted into liquid air, enters fractionating column 12, utilize the boiling point difference of oxygen, nitrogen component, so that oxygen and nitrogen are in fractional distillation
Separating in tower 12, the liquid nitrogen after separation sends into nitrogen buffer tank 8 by fractionating column 12 first outlet, compresses through nitrogen
Bottle or the most defeated after machine 9 supercharging.Liquid oxygen after separation sends into oxygen surge tank 6 by fractionating column 12 second outlet,
It is delivered to the heater in this utility model system after oxygen compressor 7 supercharging.
Alternatively, in fuel supply unit, the fuel of oxygen burner 5 supplies with it and is connected, the source of fuel or generation
Can be " fuel oil of pipeline connection or fuel gas ", " combustible gas that coal gasifier gasification produces ", it should be noted that
Coal can be lump coal, broken coal, fine coal, water-coal-slurry etc..The technical process of fuel supply unit as it is shown in figure 5, wherein,
The implication that label in Fig. 5 represents is respectively as follows: 1-air compressor (or aerator), 2-pulverizing drying unit, 3-powder
Coal pressurized delivered unit, 4-burner, 5-gasification furnace, 6-cooler, 7-dry method dust, 8-wet scrubbing, 9-remove
Slag bath.
As it is shown in figure 5, the technological process of the combustible gas of coal gasifier gasification generation can be described as: pulverizing drying unit
2 are connected with fine coal pressurized delivered unit 3 pipeline；Burner 4 respectively with air compressor 1 (or aerator), fine coal
Pressurized delivered unit 3 is connected with steam suppling tube road；Burner 4 is connected with slagging-off pond 9, cooler 6 pipeline；
Cooler 6 is connected with dry method dust 7, wet scrubbing 8 pipeline.May be used for utilizing feed coal to enter pulverizing to be dried
Unit 2, enters the drying system of coal after precrushing, makes the moisture in coal be less than 2%, subsequently in coal pulverizer
It is milled into coal dust.By the coal dust gas after the pressurization of fine coal pressurized delivered unit 3 and air and steam at burner 4
Interior mixing, through the coal burner feeding gasification furnace of burner 4；Rapid generating gasification reaction in gasification furnace 5, formation
The solid slag of molten state flows into down slagging-off pond 9, bottom；A large amount of synthesis gas that gasification produces carry in a large number
Ash, upwards go out gasification furnace 5, in cooler 6 after cooled cooling, the raw gas of output enters dry method dust 7
Carrying out udst separation with wet scrubbing 8, the coal gas after purification is delivered to the heater in this utility model system.
Alternatively, as it is shown in figure 1, oxygen-enriched combustion system may include that oxygen feed unit 1 and oxygen regulating valve 2
Connecting, oxygen regulating valve 2 is connected with oxygen-enriched burner 5, and fuel supply unit 3 is connected with fuel control valve 4, combustion
Material regulation valve 4 is connected with oxygen-enriched burner 5, and oxygen-enriched burner 5 is connected with the heater 6 of band hearth combustion, combustion
Material is sufficiently mixed in oxygen-enriched burner 5 with oxygen-enriched, can be lighted by its auto lighting switch, and be visited by ion
Head or ultraviolet probe and flame-observing hole detect combustion position.
Alternatively, as it is shown in figure 1, the hearth combustion space entry of the heater 6 in band hearth combustion space is with oxygen-enriched
Burner 5 connects, and sets the rotating jet flow district of side towards the fire and the convection current heat absorption district of non-side towards the fire, inhale in this heater 6
Closed cavity can be made by metal tube or plate in hot-zone, is flowable absorber in cavity, such as boiler, stone
Oiling work tubular heater and other industrial furnaces, the offgas outlet pipeline of this heater 6 and single column desulfurizing dust-collector 7
Connect.
Alternatively, as shown in Figure 6, the implication that label represents in figure 6 is respectively for the internal structure of single column desulfurizing dust-collector
For: 1-calper calcium peroxide allotter (sulfur dioxide SO2Processing module), 2-cleaning air chamber, 3-dedusting and desulfurization chamber, 4-cone
Shape hopper, 5-ash bucket (or ash bin).As shown in Figure 6, calper calcium peroxide allotter (sulfur dioxide SO2Processing module)
1 is connected with dedusting and desulfurization chamber 3 import, and clean air chamber 2 is connected with dedusting and desulfurization chamber 3, dedusting and desulfurization chamber 3 and
Taper hopper 4 is connected, and taper hopper 4 is connected with ash bucket (or ash bin) 5.Dedusting and desulfurization chamber 3 is internal
It is provided with 24～36 whirly separators, it should be noted that the number of whirly separator can be according to concrete condition
Design.
As shown in figures 1 to 6, the technological process of single column desulfurizing dust-collector can be described as: calper calcium peroxide allotter 1
Being connected with single column desulfurizing dust-collector 7 inlet pipeline, single column desulfurizing dust-collector 7 outlet conduit is connected with chimney 8.
May be used for utilizing the flue gas in the heater 6 in band hearth combustion space to enter single column desulfurizing dust-collector 7, according to combustion
In material, fine-powdered desulfurizing agent is evenly spread to flue gas from entrance by the content of sulfur, desulfurizing agent and the sulfur dioxide in flue gas
SO2During in this single column desulfurizing dust-collector 7, the reactant of abundant reaction formation weight granule is with flue gas, grit is deposited to bottom
The timing of laying dust district is removed, and the flue gas of environment protection standard enters airborne release by chimney.
Alternatively, as it is shown in figure 1, smoke reflux device may include that single column desulfurizing dust-collector 7 process after environmental protection
Flue gas up to standard wherein part is back to the joint portion of oxygen-enriched burner 2 and the burner hearth of heater 6 by air-introduced machine 10,
Smoke backflow amount is adjusted by air-introduced machine 10 entrance regulation single plate valve 9, and its purpose is used for slowing down oxygen-enriched vigorous combustion
Response speed, avoids heater 6 hot-spot.Smoke reflux device especially set out enters for existing heater 6
Row ultralow nitrogen oxide NOx discharge, technique suitability after oxygen-enriched power-saving technology upgrading, it is provided that optimum solution
Scheme.
Alternatively, heater 6 fuel displaces in combustion high temperature endothermic body (as steam, conduction oil,
Water, other working medium) heat supply users such as factory, power plant, city thermal can be delivered to.
Alternatively, the temperature controller in the oxygen-enriched energy-saving combustion system of nitrogen oxides zero-emission of this utility model embodiment
11 can be connected with oxygen regulating valve 2, fuel control valve 4, and wherein, temperature controller 11 is adjusted by controlling oxygen
Joint valve 2 and fuel control valve 4 regulate oxygen and the uninterrupted of fuel entrance oxygen-enriched burner 5 respectively, to realize heat
The purpose of balance can be carried.
The oxygen-enriched energy-saving combustion system of nitrogen oxides zero-emission of this utility model embodiment can reduce the burning-point of fuel, adds
Fast burning velocity, promotion burning completely, improves flame temperature, reduces the exhaust gas volumn after burning, improve heat utilization ratio
With sulfur dioxide SO in smoke evacuation after reduction heater burning2, the content of dust, it is possible to realize energy-saving and emission-reduction.
Above-mentioned this utility model embodiment sequence number, just to describing, does not represent the quality of embodiment.
In above-described embodiment of the present utility model, the description to each embodiment all emphasizes particularly on different fields, in certain embodiment
There is no the part described in detail, may refer to the associated description of other embodiments.
In several embodiments provided herein, it should be understood that disclosed technology contents, can be passed through other
Mode realize.Wherein, device embodiment described above is only schematically, the division of the most described unit,
Can be that a kind of logic function divides, actual can have other dividing mode, the most multiple unit or assembly when realizing
Can in conjunction with or be desirably integrated into another system, or some features can be ignored, or does not performs.Another point, institute
The coupling each other shown or discuss or direct-coupling or communication connection can be by some interfaces, unit or mould
The INDIRECT COUPLING of block or communication connection, can be being electrical or other form.
The described unit illustrated as separating component can be or may not be physically separate, shows as unit
The parts shown can be or may not be physical location, i.e. may be located at a place, or can also be distributed to
On multiple unit.Some or all of unit therein can be selected according to the actual needs to realize the present embodiment scheme
Purpose.
The above is only preferred implementation of the present utility model, it is noted that for the common skill of the art
For art personnel, on the premise of without departing from this utility model principle, it is also possible to make some improvements and modifications, these
Improvements and modifications also should be regarded as protection domain of the present utility model.
Claims (8)
1. the oxygen-enriched energy-saving combustion system of nitrogen oxides zero-emission, it is characterised in that including:
Oxygen feed unit, fuel supply unit, oxygen-enriched burner, the heater in band hearth combustion space, single column desulfurizing dust-collector, smoke reflux device and flue,
Wherein, described oxygen feed unit is connected with described oxygen-enriched burner pipeline respectively with described fuel supply unit；Described oxygen-enriched burner is connected with described heater；Described heater is connected with described single column desulfurizing dust-collector pipeline；Described single column desulfurizing dust-collector is connected with described flue；Described smoke reflux device is connected with described oxygen-enriched burner and described flue respectively.
System the most according to claim 1, it is characterized in that, described oxygen-enriched burner is connected, wherein with the supply side of described oxygen feed unit, needed for described oxygen-enriched burner, oxygen from liquid oxygen tank or oxygen pipeline or is provided by described oxygen feed unit, and described oxygen feed unit includes:
Aerator or air compressor, air purifier and air cushioning tank pipeline are sequentially connected and connect；Described air cushioning tank is connected with absorption A tower and absorption B tower inlet pipeline respectively；Described absorption A tower and described absorption B tower inlet pipeline are sequentially connected connect with vacuum pumps and denitrogen deafener pipeline；Described absorption A tower and described absorption B tower outlet conduit are sequentially connected with oxygen surge tank and oxygen compressor and connect, or
Described aerator or described air compressor, described air cushioning tank, described air purifier and electric heater pipeline are sequentially connected and connect；Described electric heater is connected with membrane separator inlet pipeline；The primary outlet of described membrane separator is sequentially connected connects with described vacuum pump, described oxygen surge tank and described oxygen compressor pipeline, and second outlet of described membrane separator is sequentially connected connects with control valve and described denitrogen deafener pipeline, or
Described air compressor, Precooling unit, molecular sieve-4 A tower, molecular sieve B tower and cold box unit pipeline are sequentially connected and connect；Main heat exchanger within described cold box unit and decompressor respectively and between fractionating column pipeline be connected；First outlet of described fractionating column is sequentially connected connects with nitrogen buffer tank, nitrogen compressor pipeline, and the second outlet of described fractionating column is sequentially connected connects with described oxygen surge tank, described oxygen compressor pipeline.
System the most according to claim 1, it is characterized in that, described oxygen-enriched burner is connected with the supply side of described fuel supply unit, wherein, fuel oil or fuel gas that needed for described oxygen-enriched burner, fuel source connects in pipeline or provided by described fuel supply unit, described fuel supply unit includes:
Pulverizing drying unit is connected with fine coal pressurized delivered unit pipe；Burner is connected with air compressor or aerator, described fine coal pressurized delivered unit and steam suppling tube road respectively；Described burner is connected with slagging-off pond, cooler pipeline respectively by gasification furnace；Described cooler is connected with dry method dust, wet scrubbing pipeline.
System the most according to claim 1, it is characterised in that described oxygen feed unit is connected with oxygen regulating valve, and described oxygen regulating valve is connected with described oxygen-enriched burner；Described fuel supply unit is connected with fuel control valve, and described fuel control valve is connected with described oxygen-enriched burner；Described oxygen-enriched burner is connected with described heater；Wherein, the oxygen that the fuel that described fuel supply unit provides and described oxygen feed unit provide is sufficiently mixed in described oxygen-enriched burner, is lighted by auto lighting switch, and is popped one's head in by ion probe or ultraviolet and flame-observing hole detection combustion position.
System the most according to claim 1, it is characterized in that, the hearth combustion space entry of described heater is connected with described oxygen-enriched burner, the offgas outlet pipeline of described heater is connected with described single column desulfurizing dust-collector, wherein, the rotating jet flow district of side towards the fire and the convection current heat absorption district of non-side towards the fire it are provided with in described heater, wherein, closed cavity is made by metal tube or metallic plate by described heat absorption district, is flowable absorber in described cavity.
System the most according to claim 1, it is characterised in that described single column desulfurizing dust-collector includes:
Calper calcium peroxide allotter or sulfur dioxide treatment module are connected with dedusting and desulfurization chamber import；Clean air chamber is connected with described dedusting and desulfurization chamber；Described dedusting and desulfurization chamber is connected with taper hopper；Described taper hopper is connected with ash bucket or ash bin.
System the most according to claim 1, it is characterised in that described smoke reflux device includes:
Air-introduced machine is connected with the joint portion of the burner hearth of described heater with described single column desulfurizing dust-collector outlet conduit and described oxygen-enriched burner respectively, wherein, the partial fume of described single column desulfurizing dust-collector outlet drain is back to the joint portion of described oxygen-enriched burner and the burner hearth of described heater by described air-introduced machine, described air-introduced machine entrance is connected with regulation single plate valve, and described regulation single plate valve is used for regulating smoke backflow amount.
System the most according to claim 4, it is characterised in that described system also includes:
Temperature controller, it is connected with described oxygen regulating valve, described fuel control valve, wherein, described temperature controller regulates the uninterrupted of oxygen and the fuel described oxygen-enriched burner of entrance to realize heat energy conveying balance respectively by controlling described oxygen regulating valve and described fuel control valve.
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| CN201620408967.8U CN205640978U (en) | 2016-05-06 | 2016-05-06 | Energy -conserving combustion system of nitrogen oxide zero release oxygen boosting |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105823074A (en) * | 2016-05-06 | 2016-08-03 | 碧海舟（北京）节能环保装备有限公司 | Oxygen-enriched and energy-saving combustion system capable of achieving zero emission of nitrogen oxides |
| CN106545876A (en) * | 2017-01-13 | 2017-03-29 | 中煤科工集团重庆研究院有限公司 | Flue gas wellbore method after a kind of gas regenerative oxidation |
| CN107235475A (en) * | 2017-06-21 | 2017-10-10 | 北京碧海舟腐蚀防护工业股份有限公司 | Inexpensive nitrogen-free burning oxygen generation system |
-
2016
- 2016-05-06 CN CN201620408967.8U patent/CN205640978U/en active Active
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105823074A (en) * | 2016-05-06 | 2016-08-03 | 碧海舟（北京）节能环保装备有限公司 | Oxygen-enriched and energy-saving combustion system capable of achieving zero emission of nitrogen oxides |
| CN106545876A (en) * | 2017-01-13 | 2017-03-29 | 中煤科工集团重庆研究院有限公司 | Flue gas wellbore method after a kind of gas regenerative oxidation |
| CN106545876B (en) * | 2017-01-13 | 2019-03-19 | 中煤科工集团重庆研究院有限公司 | Flue gas wellbore method after a kind of gas regenerative oxidation |
| CN107235475A (en) * | 2017-06-21 | 2017-10-10 | 北京碧海舟腐蚀防护工业股份有限公司 | Inexpensive nitrogen-free burning oxygen generation system |
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