CN106316076A - Staged pure oxygen combustion supporting system for horse shoe flame glass melting furnace and method thereof - Google Patents
Staged pure oxygen combustion supporting system for horse shoe flame glass melting furnace and method thereof Download PDFInfo
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- CN106316076A CN106316076A CN201610930516.5A CN201610930516A CN106316076A CN 106316076 A CN106316076 A CN 106316076A CN 201610930516 A CN201610930516 A CN 201610930516A CN 106316076 A CN106316076 A CN 106316076A
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- C—CHEMISTRY; METALLURGY
- C03—GLASS; MINERAL OR SLAG WOOL
- C03B—MANUFACTURE, SHAPING, OR SUPPLEMENTARY PROCESSES
- C03B5/00—Melting in furnaces; Furnaces so far as specially adapted for glass manufacture
- C03B5/16—Special features of the melting process; Auxiliary means specially adapted for glass-melting furnaces
- C03B5/235—Heating the glass
- C03B5/2353—Heating the glass by combustion with pure oxygen or oxygen-enriched air, e.g. using oxy-fuel burners or oxygen lances
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- C—CHEMISTRY; METALLURGY
- C03—GLASS; MINERAL OR SLAG WOOL
- C03B—MANUFACTURE, SHAPING, OR SUPPLEMENTARY PROCESSES
- C03B2211/00—Heating processes for glass melting in glass melting furnaces
- C03B2211/40—Heating processes for glass melting in glass melting furnaces using oxy-fuel burners
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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
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P40/00—Technologies relating to the processing of minerals
- Y02P40/50—Glass production, e.g. reusing waste heat during processing or shaping
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- Engineering & Computer Science (AREA)
- Combustion & Propulsion (AREA)
- Materials Engineering (AREA)
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Abstract
The invention discloses a staged pure oxygen combustion supporting system for horse shoe flame glass melting furnace and a method thereof. The system comprises two pure oxygen combustion spray guns, two pure oxygen lances and an oxygen pipeline control system, wherein the pure oxygen lances and the pure oxygen combustion spray guns are symmetrically arranged on breast walls of the left side and the right side of the horse shoe flame glass melting furnace in sequence from front to back, and the oxygen pipeline control system is connected with the pure oxygen lances and the pure oxygen combustion spray guns and is used for controlling the switching of the pure oxygen lances and the pure oxygen combustion spray guns, and adjusting the flow of oxygen in the pure oxygen lances and the pure oxygen combustion spray guns and the proportion between fuel and oxygen in the pure oxygen combustion spray guns. For the horse shoe flame glass melting furnace, after adopting the staged pure oxygen combustion supporting system and the method, the NOX emission concentration is reduced by 30-40%, and the total energy consumption is reduced by 2-4%, thus saving energy consumption and reducing pollution to environment.
Description
Technical field
The present invention relates to the technical field of fuel combustion in Improving Glass Manufacturing Processes, particularly relate to a kind of low NOXDischarge
The system of pure oxygen combustion-supporting stage by stage of horse shoe flame glass melter and stage by stage pure oxygen combustion-supporting method.
Background technology
The saving energy and protection environment are the important component parts of China's Economic Sustainable Development Strategy, along with living standard
Raising, environmental quality requirement is improved by people day by day.Present stage, country carried out energy-saving and emission-reduction policy, carried out atmosphere pollution
Overall control policy, to the SO in industrial tail gas and melting furnaces flue dust2、NOXDischarge has more strict requirements.
Glass industry is as traditional energy consumption-type industry, under energy saving requirement premise, in order to make full combustion of fuel, very
Many glass melters employ more combustion air, i.e. coefficient of excess air, and (coefficient of excess air α is amount of actual air for combustion VaWith reason
Opinion air capacity Va0Ratio, α=Va/Va0) both greater than 1.1, generally 1.1-1.3.This external combustion-supporting time typically want preheated-combustion-supporting
Air to improve the thermal efficiency, under the high temperature double drive with air excess, can produce substantial amounts of NO to the highest temperatureXEnter
In flue gas of glass melting furnace, substantial amounts of oxides of nitrogen gas enters and easily forms acid rain in air, causes environmental pollution.
Typically take flue gas of glass melting furnace NO at presentXThe method of later regulation reduces the discharge capacity of nitrogen oxides, the most right
NO in flue gas of glass melting furnaceXProcess by method physically and/or chemically, to reduce NOXContent.Most common method
It is selective catalytic reduction (SCR) and SNCR method (SNCR), but no matter uses SCR
Method, or SNCR (SNCR) technology, all exist in processing procedure and easily cause ammonia leakage, in catalyst
Poison, produces secondary pollution problems.It addition, the method taking this later regulation for a long time, flue gas of glass melting furnace can be made to administer
Cost remains high, and glass enterprise is difficult to bear, thus has had a strong impact on the product competitiveness of glass manufacture enterprise.
The patent application of CN102923933A discloses a kind of glass melter gradient oxygen enriching burning-aid method and special ladder
Degree oxygen enriching burning-aid system, this gradient oxygen enriching burning-aid method and gradient oxygen enriching burning-aid system are to design for horizontal-flame glass melting furnace
, horizontal-flame glass melting furnace typically has six pairs of ports, and horse shoe flame glass melter only has a pair, and in the two structure, difference is very big,
And both are respectively used to produce the glass of different cultivars, the requirement to flame, temperature etc. is the most different, and combustion-supporting system structure is complicated,
Therefore horse shoe flame glass melter it is not suitable for.
Disclosing a kind of oxygen-rich comburant method for float glass kiln in the patent application of CN1557750A, the method is applicable to
Float glass smelting kiln, is the most also a kind of horizontal-flame glass melting furnace, is not also suitable for horse shoe flame glass melter；And this oxygen-enriched helps
Burning method uses oxygenized air combustion supporting, still contains substantial amounts of nitrogen in oxygen-enriched air (oxygen content is 23-24%), remains to generation
Substantial amounts of NOX。
Summary of the invention
It is an object of the invention to for technological deficiency present in prior art, first aspect, it is provided that one can reduce NOX
The pure oxygen combustion-supporting system stage by stage of the horse shoe flame glass melter of discharge capacity, including two pure oxygen burning spray guns, two pure oxygen rifles and
Oxygen pipeline control system, described pure oxygen rifle and pure oxygen burning spray gun are symmetricly set on horse shoe flame glass melter the most successively
On the breastwork of port arranged on left and right sides, described oxygen pipeline control system is connected with pure oxygen rifle and pure oxygen burning spray gun, is used for controlling
The flow of oxygen, pressure in pure oxygen rifle and the switch of pure oxygen burning spray gun, regulation pure oxygen rifle and pure oxygen burning spray gun, and pure oxygen
Fuel and the ratio of oxygen in burning spray gun.
Described pure oxygen rifle and pure oxygen burning spray gun in the same horizontal line, are spaced 600-900mm.
Distance between the port of described pure oxygen rifle and horse shoe flame glass melter front end is 1200-1800mm.
The gun body that described pure oxygen burning spray gun includes hollow and the cartridge being sleeved in gun body, the sky in cartridge body
Between be fuel bore, it is outer and form oxygen bore with gun body tail seal that the afterbody of cartridge stretches out gun body as fuel inlet,
Cartridge head at the nozzle of close gun body head, is formed with the space between nozzle and mixes bore, near rifle in stretching into gun body
Body afterbody is provided with oxygen inlet, and gun body is outside is provided with fireguard near gun body head position.
Described pure oxygen rifle includes that the gun barrel of hollow, gun barrel head are pure oxygen outlet, and afterbody is pure oxygen import, near gun barrel head
The position in portion is provided with pure oxygen rifle baffle plate.
Angle between described pure oxygen rifle baffle plate and gun barrel is 30 °-45 °.
Described oxygen pipeline control system include for the oxygen controlling pure oxygen rifle and pure oxygen burning spray gun always turn off total
Stop valve, it is used for controlling total diaphragm valve of oxygen pressure of pure oxygen rifle and pure oxygen burning spray gun, and is respectively intended to control two
Prop up the oxygen flow in pure oxygen burning spray gun and two pure oxygen rifles and the adjustable cut-off valve of on off state, be respectively intended to adjust pure oxygen
The pressure film regulation valve of the oxygen pressure in burning spray gun and pure oxygen rifle, described adjustable cut-off valve and pressure film regulation valve string
Formed after four branch roads in parallel after connection and be connected with two pure oxygen burning spray guns and two pure oxygen rifles respectively, described total stop valve with
The pure oxygen burning spray gun of total diaphragm valve series connection Hou Yu tetra-tunnel parallel connection is connected by pipeline with pure oxygen rifle.
Second aspect, the present invention provides a kind of horse shoe flame glass melter, including port and breastwork, including above-mentioned the purest
Oxygen and aiding combustion system.
The third aspect, the present invention provides a kind of pure oxygen combustion-supporting method stage by stage of horse shoe flame glass melter, uses above-mentioned point
Stage pure oxygen combustion-supporting system, particularly as follows: open left port, left pure oxygen rifle, left pure oxygen burning spray gun and right pure oxygen burning spray gun, closes
Close right port and right pure oxygen rifle, reduce the combustion-supporting air quantity of 10%-15% in left port, regulate left pure oxygen burning spray gun for combustion
Material is than oxygen equivalents than the fuel-rich combustion for 1.1-1.2, and the right pure oxygen burning spray gun ratio that is fuel ratio oxygen equivalents is for 0.85-
The oxygen rich air burning of 0.95；After 15-25min, close left port and left pure oxygen rifle, open right port and right pure oxygen rifle, reduce the right side
The combustion-supporting air quantity of 10%-15% in port, regulating right pure oxygen burning spray gun is that fuel ratio oxygen equivalents ratio is for 1.1-1.2's
Fuel-rich combustion, left pure oxygen burning spray gun is that fuel ratio oxygen equivalents burns than the oxygen rich air for 0.85-0.95；Left port and
Left pure oxygen rifle, right port and right pure oxygen rifle cycle alternation open and close.
In described pure oxygen rifle, oxygen flow is 60-80Nm3/ h, pressure is 0.05MPa-0.12MPa, and described pure oxygen burning sprays
In rifle, oxygen flow is 60-80Nm3/ h, pressure is 0.05MPa-0.16MPa.
Compared with prior art, the invention has the beneficial effects as follows:
1) the pure oxygen combustion-supporting system stage by stage of the present invention, combustion-supporting mode is to open the port of side, pure oxygen rifle and two simultaneously
The pure oxygen burning spray gun of side, cuts out port and the pure oxygen rifle of opposite side.Spraying oxygen with the pure oxygen rifle of the port homonymy opened can
The fuel not burnt is burnt completely, makes the whole length of flame, temperature relatively uniform gentle, the ejection combustion of homonymy pure oxygen burning spray gun
Material and the mixture of oxygen, carry out burning and can increase the thermic load of hot spot region, beneficially glass melting and glass melter temperature
Stablizing of degree.
2) addition of a pair pure oxygen burning spray gun so that pure oxygen combustion-supporting is more more abundant than air-breathing burning, Ke Yizeng
The thermic load of big hot spot region, thus the fusing of beneficially glass.
3) stage by stage the core of pure oxygen combustion-supporting method be the burning making fuel in same melting furnaces simultaneously the most in two stages and
Carry out under the temperature schedule of relative distribution, the first stage: have just enter into melting furnaces at fuel and start region (the i.e. outlet of port of burning
Place, coefficient of excess air herein is relatively low), by reducing combustion air consumption, the combustion reaction making the first stage is fuel-rich
Imperfect combustion, now relatively low due to flame temperature, and O2、N2Measure on the low side, it is possible to decrease NOXGrowing amount.Second stage: with
The introducing of oxygen in pure oxygen rifle, fuel is with O in second stage2Combustion-supporting is main complete combustion reaction, and flame temperature is high, but
Owing to lacking N2Participate in and burning time is short so that NOXGrowing amount reduce.Fuel is divided by the whole method of pure oxygen combustion-supporting stage by stage
Stage burning, just disperses heat generating spot, and coefficient of excess air is not more than 1.1, generally 1.05-1.1, thus reduces NOXLife
Become.
4) horse shoe flame glass melter uses stage by stage after pure oxygen combustion-supporting method, NOXConcentration of emission reduce 30-40%, always
Energy consumption reduces 2-4%, has not only saved energy consumption but also decrease the pollution to environment.
5) this invention need not existing horse shoe flame glass melter is carried out big change, and equipment investment is few, can not blowing out
Install, just can transform under hot, reduce NOXThe effect of discharge is obvious, production technology simple and stable simultaneously, it is easy to push away
Wide application.
Accompanying drawing explanation
Fig. 1 is the site plan of the system of pure oxygen combustion-supporting stage by stage of horse shoe flame glass melter；
Fig. 2 is pure oxygen burning spray gun external structure schematic diagram；
Fig. 3 is pure oxygen rifle external structure schematic diagram；
Fig. 4 is oxygen pipeline control system schematic diagram；
Fig. 5 is the internal structure profile of pure oxygen burning spray gun；
Fig. 6 is the internal structure profile of pure oxygen rifle.
Detailed description of the invention
In existing horse shoe flame glass melter, a pair port is set, as the combustion-supporting system of glass melter, in port
Bottom arranges 2-3 and props up Fuel lance, and during work, to enter one of them together with fuel little for combustion air after regenerator preheats
Mix homogeneously combustion reaction occurs in stove, another port is then as exhanst gas outlet.I.e. when being positioned at the little of glass melter side
During stove burning, the combustion air being passed through preheating in this side port runs into height as combustion-supporting gas entrance, the fuel in Fuel lance
The combustion air of temperature, burns rapidly；The flue gas that now opposite side port is used for after absorbing burning becomes exhanst gas outlet, at flue gas
The track route driving lower glass melter flame is horseshoe-shape, so being horse shoe flame glass melter.Horse shoe flame glass melter
In port 15-25 minute exchange a role, also cry change once fiery.Owing to the fuel of glass melter is generally heavy oil, sky combustion
Gas or producer gas, and combustion system is air refuelling, so NO in the flue gas generatedXContent is high, typically at 2000-
3000mg/Nm3。
Due to existing horse shoe flame glass melter be side charging, front flame, therefore its bed of material length comparatively speaking than
Shorter, in order to strengthen fusing, the length of flame also requires that shorter, the most preferably uses short burnout.Only in this way, flame heat regulating just meeting
Concentrate on glass melting district, play the effect strengthening fusing position melting capacity.Empty at existing horse shoe flame glass melter flame
In between, the position of flame bottom anoxia, incomplete combustion, temperature is relatively low, and therefore the present invention is at original horse shoe flame glass
Newly-increased a set of pure oxygen combustion-supporting system stage by stage on melting furnaces, and use the combustion system of purity oxygen refuelling, generate flue gas to reduce
In NOXContent.Meanwhile, inventor finds that horse shoe flame glass melter local pure oxygen combustion-supporting is necessary, if oxygen
Gas introduces melting furnaces space with speed at an angle, bottom impacting flame, thus can formed near metal level side
One less oxygen-rich layer of the carbon granules Han unburned, makes fuel combustion abundant, and temperature significantly improves, and makes the temperature of flame bottom be higher than
Flame top.The asymmetric flame of this temperature, by vertical thermograde, high near the side of glass feed liquid formation one
Temperate zone, makes flame base increase to the heat radiation within glass feed liquid and thermal convection current；And at side (the namely fire near furnace crown
Flame top) temperature do not raises, and makes kiln crown from the erosion thus brought.Simultaneously because flame intensity increases, flame shortens, and has
Help control Temperature Distribution in melting furnaces.Additionally, the length of flame, it is possible to regulate, when oxygen flow increases to by controlling oxygen flow
More than 60 m3During/h, the length of flame will be significantly shorter.Moreover, burn in so still preventing regenerator, this
For heat accumulating type melting furnaces, the life-span of regenerator lattice brick can also be improved.
Fuel differs very big at general air with burning velocity in pure oxygen, as aerial in natural gas ratio in pure oxygen
Fast 10.7 times of burning velocity, therefore pure oxygen combustion-supporting, not only improves combustion intensity, moreover it is possible to accelerate burning velocity, is more beneficial for burning
Reaction completely, can improve smoke evacuation quality, reduces the pollution of unburning material confrontation environment.
Based on above theoretical research, the present invention sets one respectively in the focus breastwork both sides of existing horse shoe flame glass melter
Pure oxygen burning spray gun, and before focus breastwork both sides, pure oxygen burning spray gun, set a pure oxygen rifle respectively (with near port direction
For front, it is rear away from port direction), form the pure oxygen combustion-supporting system stage by stage of a set of new horse shoe flame glass melter, Qi Zhongchun
In oxygen rifle, ejection is pure oxygen, and spray in pure oxygen burning spray gun is the mixture of pure oxygen and fuel.Do not changing port function
With on exposure basis, the addition of a pair pure oxygen burning spray gun, hot spot region (i.e. the U-shaped bottom of U-shaped flame in Fig. 1) can be increased
Thermic load, thus the fusing of beneficially glass；Due to flame heat regulating too high can not effective cover glass liquid level, too low then can shape
Become dust, it is therefore desirable to fired by spray into angle (30-45 °), pure oxygen rifle and the pure oxygen of Reasonable adjustment pure oxygen rifle oxygen further
The interval (600-900mm) of burning spray gun and the height on breastwork are (with port height in same level, apart from metal level
Top 200-300mm) and combustion air, fuel and the sendout of oxygen, make flame heat regulating concentrate on glass melting district and heat
Point, plays the effect strengthening fusing position melting capacity.
The present invention, on the basis of the above-mentioned system of pure oxygen combustion-supporting stage by stage, further provides dividing of horse shoe flame glass melter
Stage pure oxygen combustion-supporting method, the first stage, by reducing 10-15% combustion-supporting air quantity in port, makes fuel enter melting furnaces just
Inside carry out imperfect combustion, be now reducing environment, be unfavorable for NOXGenerate；Second stage is passed through pure oxygen at homonymy pure oxygen rifle, pure
In the flame later stage by complete, owing to lacking N for the fuel combustion not burnt after oxygen addition2Participation and burning time short, NOXLife
One-tenth amount is little, thus reduces the NO generated in flue gasXContent.
The burning-aid method of the present invention makes whole length of flame temperature relatively uniform gentle, beneficially glass melting and glass
Melting furnace temperature is stable, avoids producing NO simultaneouslyXThermodynamic condition, thus reduce NO in flue gas of glass melting furnaceXGeneration.
The low NO of one that the present invention providesXThe pure oxygen combustion-supporting method stage by stage of the horse shoe flame glass melter of discharge, particularly as follows:
First open the left port (with the bottom in Fig. 1 as a left side, top is right) of horse shoe flame glass melter, open left pure simultaneously
Oxygen rifle, left pure oxygen burning spray gun and right pure oxygen burning spray gun so that in left port, combustion-supporting air quantity is reduced to original 85%-
90%, in left pure oxygen rifle, oxygen flow is 60-80Nm3/ h, pressure is 0.05MPa-0.12MPa, oxygen in left pure oxygen burning spray gun
Throughput is 60-80Nm3/ h, pressure is 0.05MPa-0.16MPa, and in right pure oxygen burning spray gun, oxygen flow is 60-80Nm3/ h,
Pressure is 0.05MPa-0.16MPa.The most left pure oxygen burning spray gun is fuel-rich combustion, and i.e. fuel ratio oxygen equivalents ratio is more than 1,
Generally 1.1-1.2；And right pure oxygen burning spray gun is oxygen rich air burning, i.e. fuel ratio oxygen equivalents ratio is less than 1, generally
0.85-0.95.Commutate after 15-25 minute, i.e. open the right port of horse shoe flame glass melter, open right pure oxygen rifle, Zuo Chun simultaneously
Oxygen burning spray gun and right pure oxygen burning spray gun, oxygen flow therein and pressure are ibid.
Below in conjunction with specific embodiment, further illustrate present disclosure, and the present invention is further elaborated, but
These embodiments limit the invention absolutely not.
The reduced NO that the present invention providesXThe pure oxygen combustion-supporting system stage by stage of the horse shoe flame glass melter of discharge capacity, such as Fig. 1
Shown (with bottom as a left side in figure, top is right, is front near port direction, is rear away from port direction), including pure oxygen burning
Spray gun, pure oxygen rifle and oxygen pipeline control system (not shown).(i.e. left side on the left side breastwork of horse shoe flame glass melter I
On the left side breastwork of port 1) a left pure oxygen rifle 5 and a left pure oxygen combustion are set the most in the same horizontal line
Burn spray gun 6；The most successively same (on the right breastwork of the rightest port 2) on the right side breastwork of horse shoe flame glass melter
One right pure oxygen rifle 3 and a right pure oxygen burning spray gun 4 are set on one horizontal line.Left pure oxygen rifle 5 and right pure oxygen rifle 3 are at horse shoe flame
Being symmetrical set in glass melter I, left pure oxygen burning spray gun 6 and right pure oxygen burning spray gun 4 are also in horse shoe flame glass melter I
It is symmetrical set.The horizontal range of pure oxygen rifle distance port is 1200-1800mm, pure oxygen burning spray gun and the distance of pure oxygen rifle
For 600-900mm.
Pure oxygen burning spray gun, as shown in Figure 2 and Figure 5, by fuel inlet 8, oxygen inlet 9, fireguard 7 and 10 groups of nozzle
Becoming, including the gun body of hollow and the cartridge of hollow that is sleeved in gun body, the end of cartridge is fuel inlet 8, cartridge
The afterbody of body stretches out outside gun body and forms oxygen bore 16 with gun body tail seal, and cartridge head is close rifle in stretching into gun body
At the nozzle 10 of body head, and mix bore 17 with the space formation between nozzle 10, be provided with oxygen inlet near gun body afterbody
9, gun body is outside is provided with fireguard 7 near gun body head position.During work, fuel is entered inside cartridge by fuel inlet 8
The fuel bore 15 that space is formed, oxygen enters oxygen bore 16, fuel and oxygen by oxygen inlet 9 and mixes at mixing bore 17
Close, sprayed in glass melter by nozzle 10.
Pure oxygen rifle, as shown in Figure 3 and Figure 6, by pure oxygen import 11, pure oxygen rifle baffle plate 12, pure oxygen outlet 13 composition, including in
Empty gun barrel, gun barrel head is pure oxygen outlet 13, and afterbody is pure oxygen import 11, is provided with pure oxygen rifle gear near the position of gun barrel head
When plate 12 works, pure oxygen passes through pure oxygen import 11, enters pure oxygen bore 14, sprays into glass melter through pure oxygen outlet 13.Wherein lead to
Cross the angle changing pure oxygen rifle baffle plate 12, make pure oxygen rifle change at the incident angle within glass melter, through repeatedly real
Issue after examination and approval existing, when the angle of pure oxygen rifle baffle plate Yu gun barrel is 30-45 ° (pure oxygen rifle and the angle of glass melter breastwork), can make
Pure oxygen rifle effective docile glass melter outer wall, thus prevent glass melter flame guest performer.
Oxygen pipeline control system, as shown in Figure 4, including total stop valve 18, total diaphragm valve 19, the spray of right pure oxygen burning
Rifle oxygen supply adjustable cut-off valve 26, right pure oxygen rifle oxygen supply import oxygen adjustable cut-off valve 27, the supply of left pure oxygen rifle oxygen
Import oxygen adjustable cut-off valve 28, left pure oxygen burning oxygen lance supply oxygen adjustable cut-off valve 29；Right pure oxygen burning spray gun oxygen
Gas supply oxygen pressure diaphragm valve 20, right pure oxygen rifle oxygen supply import oxygen pressure diaphragm valve 21, left pure oxygen rifle
Oxygen supply import oxygen pressure diaphragm valve 22, left pure oxygen burning spray gun oxygen supply oxygen pressure diaphragm valve 23；
Flexible pipe 24,25 and pipeline.Left pure oxygen rifle is by left pure oxygen rifle oxygen supply import oxygen adjustable cut-off valve 28 and left pure oxygen rifle oxygen
Supply import oxygen pressure diaphragm valve 22 controls, and left pure oxygen burning spray gun is adjusted by left pure oxygen burning oxygen lance supply oxygen
Joint stop valve 29 and left pure oxygen burning spray gun oxygen supply oxygen pressure diaphragm valve 23 control, by that analogy, by oxygen hose
Path control system is divided into four branch roads；Finally controlled oxygen main switch and oxygen pressure by total stop valve 18 and total diaphragm valve 19
Power, adjustable cut-off valve 26-29 is respectively intended to control the oxygen flow in pure oxygen burning spray gun and pure oxygen rifle and on off state, pressure
Diaphragm valve 20-23 is respectively intended to adjust the oxygen pressure in pure oxygen burning spray gun and pure oxygen rifle.Flexible pipe 24 and 25 respectively with
Pure oxygen burning spray gun 6 and 4 connects, and oxygen (oxygen content is more than 90%) is sent into pure oxygen burning spray gun.
The present invention, on the basis of the system of pure oxygen combustion-supporting stage by stage of horse shoe flame glass melter, further proposes Horse hoof
The pure oxygen combustion-supporting method stage by stage of flame glass melter, particularly as follows: flame sprays from left port 1 or right port 2 in turn, when a left side is little
When stove 1 is as bocca, right port 2 is as gas approach, and vice versa.When flame opened by left port 1, left pure oxygen rifle 5 oxygen
Gas is opened, and opens left pure oxygen burning spray gun 6 and right pure oxygen burning spray gun 4 simultaneously, reduces the combustion air of left port 10-15%
Amount, is fuel-rich combustion at the most left pure oxygen burning spray gun 6, i.e. fuel ratio oxygen equivalents ratio is for 1.1-1.2, and right pure oxygen burning
Spray gun 4 burns for oxygen rich air, i.e. fuel ratio oxygen equivalents ratio is for 0.85-0.95；After 15-25min, close left port 1, left pure oxygen
Rifle 5, opens right port 2 and right pure oxygen rifle 3, and the rightest port 2 is as bocca, and left port 1, as gas approach, reduces right little
The combustion-supporting air quantity of stove 10-15%, is fuel-rich combustion at right pure oxygen burning spray gun 4, and i.e. fuel ratio oxygen equivalents is than for 1.1-
1.2, and left pure oxygen burning spray gun 6 is oxygen rich air burning, i.e. fuel ratio oxygen equivalents ratio is for 0.85-0.95.Horse shoe flame glass melts
Kiln left and right sides cycle alternation like this runs.
Embodiment 1:
As a example by 80 tons of glass drying oven horse shoe flame glass melters, use the system of pure oxygen combustion-supporting stage by stage and the side of the present invention
Method, oxygen flow 60-80Nm in pure oxygen rifle, pure oxygen burning spray gun3/ h, combustion air consumption is from 7500Nm3/ h is reduced to 6600Nm3/
H, reduces 900Nm3/ h, reduction ratio is 12%, NOXConcentration of emission be 1200-1400mg/Nm3, reduce by more than 30%, total energy
Consumption reduction by 3%, effects of energy saving and emission reduction is obvious.
The present invention is by reducing combustion-supporting air quantity so that combustion reaction is the imperfect combustion of fuel-rich in the first stage,
Owing to flame temperature is relatively low, and O2、N2Measure on the low side, reduce NOXGeneration；Along with the spraying into of oxygen in homonymy pure oxygen rifle, second
Stage is with O2Combustion-supporting is main complete combustion reaction, and flame temperature is high, but owing to lacking N2Participate in and burning time is short, NOX's
Growing amount is few.
At present glass enterprise is all the method using post processing to the NO reducing in flue gasX, there is investment height, run in discharge
The shortcomings such as cost height, catalyst easily poisoning, substantially increase the production cost of glass；And the present invention is the improvement of employing process
Mode, reduces the NO in glass melter from sourceXDischarge, simultaneously the most again can energy efficient, be suitable to industrially popularization and application.
The above is only the preferred embodiment of the present invention, it is noted that for the common skill of the art
For art personnel, under the premise without departing from the principles of the invention, it is also possible to make some improvements and modifications, these improvements and modifications
Also should be regarded as present disclosure.
Claims (10)
1. the pure oxygen combustion-supporting system stage by stage of a horse shoe flame glass melter, it is characterised in that include two pure oxygen burning spray guns,
Two pure oxygen rifles and oxygen pipeline control system, described pure oxygen rifle and pure oxygen burning spray gun are symmetricly set on horse the most successively
On the breastwork of hoof flame glass melter port arranged on left and right sides, described oxygen pipeline control system and pure oxygen rifle and pure oxygen burning spray gun
Be connected, be used for controlling the flow of oxygen in pure oxygen rifle and the switch of pure oxygen burning spray gun, regulation pure oxygen rifle and pure oxygen burning spray gun,
Fuel and the ratio of oxygen in pressure, and pure oxygen burning spray gun.
Pure oxygen combustion-supporting system the most stage by stage, it is characterised in that described pure oxygen rifle and pure oxygen burning spray gun
In the same horizontal line, interval 600-900mm.
Pure oxygen combustion-supporting system stage by stage the most according to claim 1 or claim 2, it is characterised in that described pure oxygen rifle and horse shoe flame glass
Distance between the port of glass melting furnaces front end is 1200-1800mm.
4. according to claim 1-3 arbitrary described in pure oxygen combustion-supporting system stage by stage, it is characterised in that described pure oxygen burning spray gun bag
The gun body including hollow and the cartridge being sleeved in gun body, the space in cartridge body is fuel bore, the afterbody of cartridge
Stretching out outside gun body as fuel inlet and form oxygen bore with gun body tail seal, cartridge head is close rifle in stretching into gun body
At the nozzle of body head, formed with the space between nozzle and mix bore, be provided with oxygen inlet, outside gun body near gun body afterbody
It is provided with fireguard near gun body head position.
5. according to claim 1-4 arbitrary described in pure oxygen combustion-supporting system stage by stage, it is characterised in that described pure oxygen rifle includes hollow
Gun barrel, gun barrel head is pure oxygen outlet, and afterbody is pure oxygen import, is provided with pure oxygen rifle baffle plate near the position of gun barrel head.
Pure oxygen combustion-supporting system the most stage by stage, it is characterised in that between described pure oxygen rifle baffle plate and gun barrel
Angle be 30 °-45 °.
7. according to claim 1-6 arbitrary described in pure oxygen combustion-supporting system stage by stage, it is characterised in that described oxygen pipeline controls system
System includes the total stop valve always turned off for the oxygen controlling pure oxygen rifle and pure oxygen burning spray gun, for controlling pure oxygen rifle and pure oxygen
Total diaphragm valve of the oxygen pressure of burning spray gun, and be respectively intended to control in two pure oxygen burning spray guns and two pure oxygen rifles
Oxygen flow and the adjustable cut-off valve of on off state, be respectively intended to adjust the oxygen pressure in pure oxygen burning spray gun and pure oxygen rifle
Pressure film regulation valve, formed after four branch roads in parallel respectively after described adjustable cut-off valve and pressure film regulation valve series connection
Being connected with two pure oxygen burning spray guns and two pure oxygen rifles, described total stop valve and total diaphragm valve series connection Hou Yu tetra-tunnel are in parallel
Pure oxygen burning spray gun be connected by pipeline with pure oxygen rifle.
8. a horse shoe flame glass melter, including port and breastwork, it is characterised in that include arbitrary described point of claim 1-7
Stage pure oxygen combustion-supporting system.
9. a pure oxygen combustion-supporting method stage by stage for horse shoe flame glass melter, use claim 1-7 arbitrary described in the purest
Oxygen and aiding combustion system, particularly as follows: open left port, left pure oxygen rifle, left pure oxygen burning spray gun and right pure oxygen burning spray gun, closes right little
Stove and right pure oxygen rifle, reduce the combustion-supporting air quantity of 10%-15% in left port, and regulating left pure oxygen burning spray gun is fuel ratio oxygen
Gas equivalent proportion is the fuel-rich combustion of 1.1-1.2, and right pure oxygen burning spray gun is that fuel ratio oxygen equivalents ratio is for 0.85-0.95's
Oxygen rich air is burnt；After 15-25min, close left port and left pure oxygen rifle, open right port and right pure oxygen rifle, reduce in right port
The combustion-supporting air quantity of 10%-15%, regulating right pure oxygen burning spray gun is that fuel ratio oxygen equivalents is than the fuel-rich for 1.1-1.2
Burning, left pure oxygen burning spray gun is that fuel ratio oxygen equivalents burns than the oxygen rich air for 0.85-0.95；Left port and left pure oxygen
Rifle, right port and right pure oxygen rifle cycle alternation open and close.
Pure oxygen combustion-supporting method the most stage by stage, it is characterised in that in described pure oxygen rifle, oxygen flow is
60-80Nm3/ h, pressure is 0.05MPa-0.12MPa, and in described pure oxygen burning spray gun, oxygen flow is 60-80Nm3/ h, pressure is
0.05MPa-0.16MPa。
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111072257A (en) * | 2019-12-31 | 2020-04-28 | 秦皇岛玻璃工业研究设计院有限公司 | Burner for horseshoe flame glass kiln, glass kiln and burning method |
| CN113429116A (en) * | 2021-06-11 | 2021-09-24 | 秦皇岛玻璃工业研究设计院有限公司 | Gradient oxygen-increasing low-NOx combustion device and process for float glass melting furnace |
| CN115677178A (en) * | 2022-11-24 | 2023-02-03 | 秦皇岛玻璃工业研究设计院有限公司 | Combustion method of glass kiln |
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| US5779754A (en) * | 1995-07-06 | 1998-07-14 | L'air Liquide Societe Anonyme Pour L'etude Et L'exploitation Des Procedes Georges Claude | Process and horseshoe flame furnance for the melting of glass |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN111072257A (en) * | 2019-12-31 | 2020-04-28 | 秦皇岛玻璃工业研究设计院有限公司 | Burner for horseshoe flame glass kiln, glass kiln and burning method |
| CN111072257B (en) * | 2019-12-31 | 2021-11-16 | 秦皇岛玻璃工业研究设计院有限公司 | Burner for horseshoe flame glass kiln, glass kiln and burning method |
| CN113429116A (en) * | 2021-06-11 | 2021-09-24 | 秦皇岛玻璃工业研究设计院有限公司 | Gradient oxygen-increasing low-NOx combustion device and process for float glass melting furnace |
| CN115677178A (en) * | 2022-11-24 | 2023-02-03 | 秦皇岛玻璃工业研究设计院有限公司 | Combustion method of glass kiln |
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| CN106316076B (en) | 2019-05-07 |
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Address after: Hebei Street West Harbor area, 066004 Hebei city of Qinhuangdao province No. 91 Applicant after: Qinhuangdao glass industry research and Design Institute Co., Ltd. Address before: Hebei Street West Harbor area, 066004 Hebei city of Qinhuangdao province No. 91 Applicant before: Qinhuangdao Glass Industry Research and Design Inst. |
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