CN207042228U - A kind of single channel denitration of glass furnace fume device - Google Patents
A kind of single channel denitration of glass furnace fume device Download PDFInfo
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- CN207042228U CN207042228U CN201720528789.7U CN201720528789U CN207042228U CN 207042228 U CN207042228 U CN 207042228U CN 201720528789 U CN201720528789 U CN 201720528789U CN 207042228 U CN207042228 U CN 207042228U
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- regenerator
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Abstract
This patent discloses a kind of single channel denitration of glass furnace fume device, including glass furnace and two symmetrically arranged regenerator, gitter brick is respectively equipped with regenerator, hot switching path is formed between gitter brick, above gitter brick and regenerator side, top surface or side and top surface that temperature is 1,051 1450 DEG C, it is provided with for spraying neutral, liquid denitrfying agent some injectors.When middle and upper part of the caused flue gas Jing Guo regenerator in glass furnace, injector injection denitrfying agent, flue gas mixes with denitrfying agent occurs denitration reaction, reaches the purpose of denitrating flue gas.This patent has advanced technology, easy to operate, saving cost and safe beneficial effect compared with existing denitration technology.
Description
Technical field
This patent is related to the technical field of denitration of glass furnace fume, and in particular to a kind of single channel glass furnace fume takes off
Nitre device.
Background technology
In the production process of glassware, the flue gas of glass furnace discharge contains substantial amounts of nitrogen oxides, and nitrogen oxidation
Thing is all extremely serious to environment, human body and the harm of other animals and plants, and denitration is carried out into glass to the flue gas of glass furnace discharge
The task of top priority of glass industry.
Glass industry most study and the most wide denitration technology of industrial applications are SCR denitration technologies at present.SCR denitrations
Technology is used widely in large-scale coal-fired steam boiler denitrating flue gas, and generally denitration rate is up to more than 80%.But
The shortcomings that being SCR denitration technology is：Denitration device floor space is big, and equipment investment is high；Catalyst costs are expensive, account for whole de-
The 40~60% of nitre system and device total cost, periodic replacement catalyst can dramatically increase the operating cost of denitration；NH3 excitants
Greatly and secondary pollution can be caused after leakage to corrosive pipeline.Importantly, dustiness is big in glass furnace flue gas, caking property is strong,
Easily cause catalyst poisoning or blocking and fail, seriously reduce denitration efficiency.
To solve the problems, such as that SCR denitration investment in machinery and equipment is big, operating cost is high, needing to consume a large amount of catalyst, patent
Publication No. CN104524939A Chinese patent《Glass denitrating system based on SNCR technologies》Disclose one kind and be based on SNCR
The glass denitrating system of denitration technology, it is for 850~1050 DEG C and no fiery in the middle and upper part temperature of the regenerator of glass furnace
The high-temperature area of flame arranges more ammonia injectors, and more ammonia injector point multilayers are set, and each ammonia injector is
Multiple spot planar radiates, and ammonia is stopped at least 0.5 second in reflecting regional.This technical scheme seems feasible, but with actual storage
The temperature range of hot cell middle and upper part contradicts.
The temperature range and denitrfying agent of this selection of technical scheme are unreasonable, and irrational reason has at 2 points：(1) generally
The temperature that glass metal is formed in glass furnace is at 1450 DEG C or so, up to 1600 DEG C sometimes, now glass furnace burning glass
The temperature that caused flue gas reaches regenerator middle and upper part by exhaust gases passes is above 1050 DEG C.And actual accumulation of heat Indoor Temperature
The region that degree section is 850~1050 DEG C is covered with gitter brick, and can not install ammonia injector in the position of gitter brick.
(2) installation site of injector can only arrive the top of regenerator above the gitter brick in regenerator, but due to this position section
Interior temperature is very high, the temperature range to be played a role beyond denitrfying agent ammoniacal liquor, so can not with common ammoniacal liquor/ammonia denitrfying agent
To the denitrating flue gas of the condition of high temperature.
Set in addition, the ammonia injector in this technical scheme is multilayer, but in the regenerator of reality, ammonia injector
Because space limitation can not multilayer setting.
In addition, the denitrfying agent used in this technical scheme is ammonia, but ammonia belongs to alkaline gas, is mordant to have
Poisonous gas, gitter brick can be caused to corrode.And the ammonia of injector injection is gaseous state, the distance of injected in gaseous state is short, and then can not
The flue gas adjusted the distance farther out carries out denitration.
The content of the invention
To overcome at least one deficiency described in above-mentioned prior art, this patent provides a kind of single channel glass furnace cigarette
Gas denitrification apparatus.This patent by above gitter brick, and temperature range be 1051-1450 DEG C regenerator side, top surface or
Side and top surface, setting is some to be used to spray the neutral, injector of liquid denitrfying agent, reaches the effect of denitration.This patent is with showing
There is technology to compare, there is advanced technology, easy to operate, saving cost and safe effect.
To realize the purpose of this patent, it is achieved using following technical scheme：
A kind of single channel denitration of glass furnace fume device, including glass furnace and two are symmetrical arranged regenerator, respectively
For the first regenerator and the second regenerator, the glass furnace passes through air duct with the first regenerator and the second regenerator respectively
Connected with exhaust gases passes, the exhaust gases passes and the air duct are symmetrical arranged, the sky in air duct and glass furnace
Gas entrance is provided with flame thrower, is from bottom to top distributed with some gitter bricks in the regenerator, the brick of the gitter brick it
Between be provided with hot switching path, it is characterised in that at least above the gitter brick and temperature is 1051-1450 DEG C of regenerator
Side, top surface or side and top surface, it is provided with for spraying neutral, liquid denitrfying agent some injectors.
Glass furnace is mainly used in fusion cast glass liquid, after air enters regenerator, preheats through gitter brick, then leads to through air
Road enters glass furnace.Flame thrower is used for spray fuel, and air mixes with fuel, fuel combustion, makes frit in height
Temperature is lower to be melted, and turns into glass metal.Flue gas caused by burning enters another regenerator through exhaust gases passes in glass furnace, has just enter into storage
The flue-gas temperature of hot cell middle and upper part is spatially stayed at 1051-1450 DEG C from gitter brick the top to the regenerator of regenerator top surface
There is certain space, flue gas stops the temperature in this space at 1051-1450 DEG C, injector is installed on this locus, sprays
Denitrfying agent is penetrated, it is necessary to pay attention to the Applicable temperature scope of denitrfying agent.
The denitrfying agent that this patent uses is the denitrfying agent of Guangzhou Lv Hua Environmental Protection Technology Co., Ltd development ＆ production, model
HSR-1/2/3, it is neutral (pH value 6-9), liquid, high temperature resistant, it is not easy to corrosion impact is caused to equipment, spray regime is big,
And there is good denitration effect to the flue gas that temperature range is 1051-1450 DEG C.The denitrfying agent that this patent uses not only is applicable
In the flue gas of high temperature (1051-1450 DEG C), it is also suitable wider with the flue gas of high temperature (650-1050 DEG C), denitration scope.Denitration
Flue gas afterwards carries out heat transfer by the gitter brick in hot switching path, with regenerator, makes the temperature of flue gas reduce, meanwhile, store
The temperature rise of hot brick, is advantageous to follow-up preheated air and uses.
Further, the shape of the injector injection includes fan-shaped, taper and cylindricality.Currently used denitrfying agent injection
The spray configuration of device has fan-shaped, taper and cylindricality, different injectors can be installed according to different fields of employment, to reach most
Good jeting effect.The denitrification apparatus of this patent can install different types of injector, wherein, spray configuration is fan-shaped spray
For emitter because its spray regime is larger, the jeting effect reached is best.
Further, the eject position of the injector is from the gitter brick top to the regenerator top surface space
Between the 25%-100% of height.
The installation site of injector is also an important factor for influenceing denitrating flue gas effect.Injector installation site is from gitter brick
It is too low, then gitter brick is easily ejected into, and be difficult that denitration is carried out to the flue gas of regenerator adjacent top surface.
Further, the injector is arranged on from the gitter brick top to the regenerator top surface spatial altitude
Between 40%-60%.
Injector is arranged on from the gitter brick top to the 40%-60% of the regenerator top surface spatial altitude
When, the denitrfying agent ejected can cover position existing for flue gas to a wide range, and then flue gas can be carried out at utmost
Denitration.
Further, the injector is arranged on the regenerator side above the gitter brick, and flue-gas temperature is
1051-1450 DEG C of region, the distance of top to the injector installation site of the gitter brick is 0.3-1.2m.
Further, the clipping room of the adjacent injectors between some injectors is away from for 0.3-1m.The peace of injector
Dress spacing is mainly selected according to the injection denitrfying agent scope of injector, typically when spacing is 0.3-1m, adjacent injectors
Between flue gas can be coated with denitrfying agent, so as to realize the denitration of maximum magnitude.
Compared with the prior art, this patent has following beneficial effect：
(1) advanced technology：The applicable wide temperature range of the denitrfying agent of this patent, is particularly suitable for high-temperature flue gas and takes off
Nitre, effectively widening for reaction temperature, can expand the sphere of action of denitrfying agent, extend action time, make denitrfying agent and nitrogenous oxygen
The abundant haptoreaction of industrial waste gas of compound, so as to improve denitration efficiency.
(2) it is safe：The denitrfying agent that this patent uses for neutral or weakly acidic pH, liquid, high temperature resistant, be not easy to crystallize, get rid of
Abandoned traditional denitrfying agent for alkalescence, it is dangerous, perishable the defects of, can also effectively avoid pipeline blockage.
(3) reduced cost：The denitration technology of this patent reduces using in regenerator, does not change existing furnace construction, only needs
On the basis of existing utility, increase denitrification apparatus and corresponding robot control system(RCS), investment cost are low.
(4) this patent equipment space is small, and need not add catalyst, saves cost, reduces space-consuming, just
In the transformation of existing glass furnace, operating procedure is simplified, cost performance is higher.
Brief description of the drawings
Fig. 1 is the overlooking structure figure of this patent single channel denitration of glass furnace fume device.
Fig. 2 is the main structure figure of this patent single channel denitration of glass furnace fume device.
Embodiment
To make the purpose, technical scheme and advantage of this patent clearer, below in conjunction with the accompanying drawings to this patent embodiment
It is described in more detail.
Embodiment
As shown in figure 1, a kind of single channel denitration of glass furnace fume device, including glass furnace 1, regenerator 2 and flame
Injector 3, regenerator 2 include the first regenerator 201 and the second regenerator 202, are provided between glass furnace 1 and regenerator 2
Exhaust gases passes and air duct, wherein dotted arrow represent exhaust gases passes, and solid arrow represents air duct.Because air and cigarette
Gas controlled flow direction every 30 minutes by self-checking device, and the first regenerator 201 in the second regenerator 202 with being equipped with
The injector 4 of denitrfying agent is sprayed, injector 4 only sprays denitrfying agent in the regenerator middle and upper part for having flue gas to flow out.In glass furnace
Or air duct is provided with flame thrower 3, flame thrower 3 is only in one side spray fuel for having air to be passed through.
As shown in Fig. 2 because the first regenerator 201 and the second regenerator 202 can only see to be symmetrical arranged in terms of front
The structure chart of one of regenerator.
As shown in figure 1, when the first regenerator 201 is passed through air, the preheated air of the first regenerator 201, enter in air
During glass furnace, flame thrower spray fuel, fuel and air mixing after-combustion, so as to heat fusion cast glass raw material.Fuel
Flue gas caused by burning by exhaust gases passes enter the second regenerator 202 middle and upper part, injector 4 spray denitrfying agent, flue gas with
Denitration reaction occurs for denitrfying agent.Flue gas after denitration reduces temperature by the hot switching path of the second regenerator, is then exhausted from the external world.
A kind of denitration of glass furnace fume method suitable for above-mentioned single channel denitration of glass furnace fume device, its denitration
Step includes：
S1:In the air that the first regenerator is passed through, gitter brick hot switching path of the air Jing Guo the first regenerator, by accumulation of heat
Brick is preheated, and the heat on gitter brick is pulled away；
S2:Air after preheating is by air duct, into glass furnace, flame thrower spray fuel, air and combustion
Material mixing, fuel air it is combustion-supporting under, burnt in glass furnace, the frit in glass furnace is heated to molten
State；
S3:Flue gas caused by burning enters the second regenerator by exhaust gases passes in glass furnace, is arranged on gitter brick
The injector injection denitrfying agent of side, flue gas carry out denitration reaction in the presence of denitrfying agent.
S4：Flue gas carries out heat exchange after denitration reaction with the gitter brick in the second regenerator, through storing after heat storage brick
Hot brick hot switching path discharge.
In the present embodiment, injector 4 selects injector of the spray regime for sector, the denitrfying agent selection green environmentally friendly section of China in Guangzhou
The HSR-3 type denitrfying agents of skill Co., Ltd production.
The working time of regenerator 2 and preheating chamber 3 is controlled by self-correcting mechanism, every half an hour by regenerator 2 with
The work of preheating chamber 3 exchanges once.
After 30 minutes, the circulating direction of air and flue gas is adjusted by self-checking device exchanges direction, i.e. air is from the
Two regenerator 202 are passed through, the preheated air of the second regenerator 202, and the air after preheating is when entering 1 entrance of glass furnace, fire
The spray fuel of flame injector 3, fuel and high temperature air mixing after-combustion, heat the frit in glass furnace.Fuel combustion
Caused flue gas passes into the first regenerator 201, in the middle and upper part of the first regenerator 201, injector injection denitrfying agent, and denitration
Agent mixes with flue gas, and denitration reaction occurs, the gitter brick hot switching path that the flue gas after denitration passes through in the first regenerator 201,
Heat is transmitted to gitter brick, then the external world is flowed into from the exit of the first regenerator 201.
By that analogy, every 30 minutes, the circulating direction of air and flue gas is adjusted by self-checking device to be exchanged, and first
Injector controls whether to spray denitrfying agent according to flue gas position in the regenerator 202 of regenerator 201 and second, when flue gas is the
Circulated in one regenerator 201, then the injector work of the first regenerator 201, the injector of the second regenerator 202 do not work.And
The operating position of flame thrower 3 and the operating position of injector are on the contrary, when air flows into glass furnace from the second regenerator 202
When, worked in the second regenerator 202 and the flame thrower 3 of the boundary position of glass furnace 1, in the first regenerator 201 and glass
The flame thrower 3 of the boundary position of kiln 1 does not work.
Denitration interpretation of result：
Before denitration, first caused nitrous oxides concentration in glass furnace is carried out using portable multifunctional flue gas analyzer
Monitoring, monitoring result are as shown in the table.
The concentration of the before processing glass furnace nitrogen oxides in effluent of table 1
The calculating process of converted score average value：
Converted score=concentration of emission × excess air coefficient=673 × 2.55=1716mg/m3。
From upper table monitoring result, before denitration, the mg/ of average converted score 1716 of glass furnace nitrogen oxides in effluent
m3, it is impossible to meet《Flat glass industry atmosphere pollutants emission standardses》(GB26453-2011) emission limit requirement.Cigarette
Gas must can just be discharged into atmospheric environment after denitrogenation.
After a kind of above-mentioned single channel denitration of glass furnace fume device, again to caused nitrogen oxygen in glass furnace
Compound concentration is monitored, and monitoring result is as shown in the table.
The concentration of glass furnace nitrogen oxides in effluent after the processing of table 2
From upper table monitoring result, the average converted score of glass furnace nitrogen oxides in effluent is 153 mg/ after processing
M3, it disclosure satisfy that《Flat glass industry atmosphere pollutants emission standardses》(GB26453-2011) emission limit requirement.
Denitration efficiency=273 × 100%=91.08% of (1716-153) ÷.
To sum up, (NOx) environmental pollution of the nitrogen oxides in industrial waste gas and Health Impact are serious, remove Industry Waste
Nitrogen oxides in gas is that denitration is one of environmental problem for wanting emphasis to solve in current country.A kind of single-pass that this patent uses
Road denitration of glass furnace fume device and denitration method for flue gas, it can effectively reduce the emission reduction of oxides of nitrogen gas pollution, improve sky
PM2.5 in makings amount, reduction air etc..This will play important practical function to environment protection and health.
Claims (6)
1. a kind of single channel denitration of glass furnace fume device, including glass furnace and two are symmetrical arranged regenerator, are respectively
First regenerator and the second regenerator, the glass furnace respectively with the first regenerator and the second regenerator by air duct and
Exhaust gases passes are connected, and the exhaust gases passes and the air duct are symmetrical arranged, the air in air duct and glass furnace
Entrance is provided with flame thrower, is from bottom to top distributed with some gitter bricks in the regenerator, between the brick of the gitter brick
Provided with hot switching path, it is characterised in that at least above the gitter brick and temperature is 1051-1450 DEG C of regenerator side
Face, top surface or side and top surface, it is provided with for spraying neutral, liquid denitrfying agent some injectors.
A kind of 2. single channel denitration of glass furnace fume device according to claim 1, it is characterised in that the injector
The shape of injection includes fan-shaped, taper and cylindricality.
A kind of 3. single channel denitration of glass furnace fume device according to claim 1, it is characterised in that the injector
Eject position from the gitter brick top to the 25%-100% of the regenerator top surface spatial altitude.
A kind of 4. single channel denitration of glass furnace fume device according to claim 3, it is characterised in that the injector
Installed in from the gitter brick top to the 40%-60% of the regenerator top surface spatial altitude.
A kind of 5. single channel denitration of glass furnace fume device according to claim 1, it is characterised in that the injector
On the regenerator side above the gitter brick, and flue-gas temperature is 1051-1450 DEG C of region, the gitter brick
The distance of top to the injector installation site is 0.3-1.2m.
A kind of 6. single channel denitration of glass furnace fume device according to claim 1, it is characterised in that some sprays
The clipping room of adjacent injectors between emitter is away from for 0.3-1m.
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| CN106994299A (en) * | 2017-05-12 | 2017-08-01 | 广州绿华环保科技有限公司 | A kind of single channel denitration of glass furnace fume device and its method of denitration |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN106994299A (en) * | 2017-05-12 | 2017-08-01 | 广州绿华环保科技有限公司 | A kind of single channel denitration of glass furnace fume device and its method of denitration |
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Address after: Room A209 and A210 of Guangzhou International Business Incubator, No. 3, Juquan Road, Science City, Huangpu District, Guangzhou, Guangdong 510700 (office only) Patentee after: Guangzhou LvHua Environmental Protection Technology Co.,Ltd. Address before: Room A204, Zone A, Guangzhou International Business Incubator, No. 3, Juquan Road, Guangzhou Hi tech Industrial Development Zone, Guangdong 510663 Patentee before: GUANGZHOU GREEN SPLENDID ENVIROMENT SCIENCE AND TECHNOLOGY Co.,Ltd. |
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