CN104315865A - Natural gas floating method glass kiln furnace smoke gas environment-friendly government and afterheat recovery system - Google Patents
Natural gas floating method glass kiln furnace smoke gas environment-friendly government and afterheat recovery system Download PDFInfo
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- CN104315865A CN104315865A CN201410515118.8A CN201410515118A CN104315865A CN 104315865 A CN104315865 A CN 104315865A CN 201410515118 A CN201410515118 A CN 201410515118A CN 104315865 A CN104315865 A CN 104315865A
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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
- Y02P10/00—Technologies related to metal processing
- Y02P10/10—Reduction of greenhouse gas [GHG] emissions
- Y02P10/143—Reduction of greenhouse gas [GHG] emissions of methane [CH4]
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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
- Y02P10/00—Technologies related to metal processing
- Y02P10/25—Process efficiency
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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
- Y02P80/00—Climate change mitigation technologies for sector-wide applications
- Y02P80/10—Efficient use of energy, e.g. using compressed air or pressurized fluid as energy carrier
- Y02P80/15—On-site combined power, heat or cool generation or distribution, e.g. combined heat and power [CHP] supply
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Abstract
The invention discloses a natural gas floating method glass kiln furnace smoke gas environment-friendly government and afterheat recovery system, which comprises an afterheat boiler, a draft fan, a dust removal system and a denitration system, wherein smoke gas exhausted by a natural gas floating method glass kiln furnace is sucked into the afterheat boiler through the draft fan, a smoke exhaust opening of the natural gas floating method glass kiln furnace is communicated with the afterheat boiler through a flue, a flue of the afterheat boiler is separated into two mutually independent parts through a flue gate plate vertical to the flowing direction of the smoke gas, the two mutually independent parts are respectively the first flue and the second flue, the first flue and the second flue are in sequential arrangement in the flowing direction of the smoke gas in the afterheat boiler, in addition, the side wall of the first flue is provided with a smoke taking opening, the setting position of the smoke taking opening meets the temperature requirements of a denitration system for performing the denitration process, the side wall of the second flue is provided with a smoke return opening, and in addition, the dust removing system and the denitration system are sequentially connected between the smoke taking opening and the smoke return opening. Therefore the glass kiln furnace smoke gas exhausting reaches the standard and meets the environment-protection requirements, meanwhile, the stable and efficient utilization of the smoke gas afterheat is realized, and the heat energy loss of the smoke gas can be effectively avoided.
Description
Technical field
The present invention relates to a kind of fume environment protection to administer and residual neat recovering system, relate more specifically to a kind of natural gas float glass furnace fume environment protection and administer and residual neat recovering system.
Background technology
Along with country is day by day strict to the requirement of Air Pollution Control, the pollutant kind of limiting emission is also progressively increasing, and the control emission of nitrogen oxide and dust requires repeatedly clear and definite and enforces.According to production scale and the fuel service condition of current float glass industry, temperature about 1600 DEG C in glass melter, flue collector smog discharge temperature is distributed in 400 DEG C ~ 520 DEG C, and the major pollutants in flue gas are SO
xand NO
x, difference is larger with the fuel used is different for its content.In gas fuel, sulfur content own is few, adopts Na
2sO
4as glass fining agent, decompose micro-SO
2produce, for the smelting furnace adopting natural gas as fuel, SO
2concentration of emission is at 200mg/m
3left and right, concentration of emission meets environmental requirement (state compulsion standard 400mg/m
3).Natural gas glass furnace particle (dust) initial ejection concentration is at 99 ~ 280mg/m
3, state compulsion standard-required reaches 50mg/m
3below; Its nitrogen oxide initial ejection concentration is at 1800 ~ 2870mg/m simultaneously
3, state compulsion standard-required reaches 700mg/m
3below; Therefore, for meeting environmental requirement, usually need to carry out dedusting and out of stock process to flue gas.
The dust collection method that current natural gas float glass furnace kiln gas is conventional has:
(1) dry method dust; Usually gravitational settling deduster is had, centrifugal cyclone deduster and sack cleaner.
(2) wet dedusting; By drop or liquid film washing dusty gas, make grit be attached on liquid or be aggregated into large grain, making separate particles.
(3) electric precipitation (Electrostatic Precipitation is called for short EP); Utilize corona discharge to make the particle in dusty gas charged, by electrical forces, charged particle is separated.
The method of denitration that current natural gas float glass furnace kiln gas is conventional has:
(1) selective catalytic reduction (Selective Catalytic Reduction is called for short SCR); The technique that selective catalytic reduction (SCR) can be divided into high temperature, middle temperature, low temperature three kinds different.The Applicable temperature that high temperature SCR generally refers to catalyst 450 DEG C ~ 600 DEG C and more than, Medium temperature SCR refers to that the Applicable temperature of catalyst is at 280 DEG C ~ 420 DEG C, and low-temperature SCR refers to that the Applicable temperature of catalyst is at 120 DEG C ~ 300 DEG C.The fundamental reaction equation of SCR technique is as follows:
4NH
3+4NO+O
2=4N
2+6H
2O （1）
8NH
3+6NO
2=7N
2+12H
2O （2）
4NH
3+2NO
2+O
2=3N
2+6H
2O （3）
Under catalyst action, in the flue gas of temperature about 280 DEG C ~ 420 DEG C, spray into ammonia, by NO
xbe reduced into N
2and H
2o.
(2) SNCR method (Selective Non-Catalytic Reduction is called for short SNCR); SNCR (SNCR) removes NO
xtechnology is containing NH
xthe reducing agent (as ammonia, ammoniacal liquor or urea etc.) of base sprays into the region that fire box temperature is 850 DEG C ~ 1050 DEG C, and this reducing agent rapid thermal decomposition becomes NH
3with other accessory substance, subsequently NH
3with the NO in kiln gas
xcarry out reacting and generating N
2and H
2o.
(3) wet denitration; Rotating stream tray scrubber technology, adopts potassium permanganate KMnO
4with NaOH as absorbent, first use KMnO
4nO in flue gas is oxidized to NO
2, then remove NO with NaOH reaction
2, reach NO in removing flue gas
xobject.
Current, China is intended to Resources for construction economizing type, environmentally friendly new road toward industrialization; Therefore, do not reclaimed if only administered for the flue gas of natural gas float glass furnace, will energy waste be caused; And how the waste heat recovery of the flue gas of natural gas float glass furnace and smoke gas treatment two operations are organically combined, maximizing to reach using energy source, is the great challenge that the off-gas recovery of current natural gas float glass furnace is administered; Therefore, develop and adapt to the Novel flue gas Processing tecchnics of the demand, realize cleaner production, energy recovery, for imperative the off-gas recovery of current natural gas float glass furnace administers field.
Summary of the invention
The present invention proposes on the basis deeply understood characteristic and the temperature distributing rule of natural gas float glass furnace kiln gas, object be a kind of technology arrangement proposed to solve the problems of the technologies described above compact, invest less, that heat utilization rate is high natural gas float glass furnace fume environment protection administer and residual neat recovering system, while making glass furnace fume emission compliance meet environmental requirement, the stability and high efficiency realizing fume afterheat utilizes, and effectively avoids the heat-energy losses of flue gas.Described system is environment protection treating and residual neat recovering system, comprises waste heat boiler, dust pelletizing system, denitrating system and air-introduced machine; Glass furnace is communicated with waste heat boiler by flue, by air-introduced machine glass furnace fume taken out and cause waste heat boiler, glass furnace fume is down to preference temperature introducing dust pelletizing system through waste heat boiler and denitrating system carries out environment protection treating, glass furnace fume after environment protection treating introduces residual heat boiler for exchanging heat again, by induced draft blower withdraws, enter air.The present invention is at China's Resources for construction economizing type, under friendly environment society's overall background, realizes proposing in the process of new road toward industrialization, be intended to promote glass industry cleaner production, realize the upgrading and optimization of industrial structure, assisted circulation economy, there is good environmental benefit and social benefit.
For realizing above technical purpose, the present invention will take following technical scheme:
A kind of natural gas float glass furnace fume environment protection is administered and residual neat recovering system, and comprise waste heat boiler and air-introduced machine, the flue gas that natural gas float glass furnace is discharged is taken out by air-introduced machine and caused waste heat boiler, also comprises dust pelletizing system and denitrating system; The exhaust opening of natural gas float glass furnace is communicated with waste heat boiler by flue, the flue of waste heat boiler is by being separated into separate two parts perpendicular to the flue shutter of flue gas flow direction, be respectively the first flue, the second flue, described first flue, the second flue are arranged along flue gas flow direction order in waste heat boiler, and the sidewall of the first flue is provided with smoke taking mouth, set up position the to meet temperature requirements that out of stock system carries out denitration process of this smoke taking mouth, the sidewall of the second flue is then provided with back mouth; In addition, be linked in sequence dust pelletizing system and out of stock system between smoke taking mouth and time mouth.It can thus be appreciated that: the present invention by arranging preposition heat-transfer area in waste heat boiler, the high-temperature flue gas that natural gas float glass furnace is discharged is reduced to preference temperature, again flue gas is sent to dedusting, out of stock system carries out fume environment protection improvement respectively, finally this cleaning flue gases is sent in waste heat boiler flue and carries out waste heat recovery; Therefore, the present invention can improve efficiency and the service life of out of stock system effectively; Also can improve the organic efficiency of flue gas to a great extent simultaneously;
As a further improvement on the present invention, described waste heat boiler is that π shape is arranged; Described π shape waste heat boiler one end is provided with gas approach, and the gas approach of waste heat boiler is communicated with by the exhaust opening of flue with natural gas float glass furnace, and the other end is provided with exhanst gas outlet, and the pump orifice of air-introduced machine is arranged towards the exhanst gas outlet of waste heat boiler; Flue shutter is arranged on a side arm of π shape waste heat boiler.
As a further improvement on the present invention, the position that arranges of described smoke taking mouth and time mouth is all fitted with mouth flashboard; The break-make that the keying of described mouth flashboard controls described smoke taking mouth and waste heat boiler flue or returns between mouth and waste heat boiler flue.
As a further improvement on the present invention, described π shape waste heat boiler comprises high parameter waste heat boiler, the low parameter waste heat boiler of Combination application; Wherein, high parameter waste heat boiler corresponds in π shape waste heat boiler, and this side arm installing flue shutter is installed, and low parameter waste heat boiler is then installed corresponding to another side arm of π shape waste heat boiler.
As a further improvement on the present invention, described high parameter waste heat boiler is provided with steam superheater, evaporimeter and soft water heater.
As a further improvement on the present invention, described low parameter waste heat boiler is provided with evaporimeter and soft water heater; The evaporimeter of described low parameter waste heat boiler and the heat-transfer area tubing of soft water heater are corrosion resisting steel.
As a further improvement on the present invention, described π shape waste heat boiler adopts the independent high parameter waste heat boiler arranged, and the soft water heater heat-transfer area tubing of the high parameter waste heat boiler that this is independently arranged is corrosion resisting steel.
As a further improvement on the present invention, described out of stock system is the out of stock system of selective catalytic reduction, in described waste heat boiler flue, is 320 DEG C ~ 350 DEG C in the flue-gas temperature at smoke taking mouth setting position place.
As a further improvement on the present invention, described dust pelletizing system is electric dust removing system.
As a further improvement on the present invention, described flue shutter is turnover flue shutter, and this flue shutter is arranged in the flue of waste heat boiler by switching mechanism, and described flue shutter is supported on the cross section of waste heat boiler flue by aforementioned switching mechanism.
Natural gas float glass furnace fume environment protection of the present invention administer and residual neat recovering system advantage as follows:
(1) environment protection treating efficiency is high, and system operation cost is low
Environment protection treating system of the present invention, the electric precipitation arranged by many electric fields (EP) system realizes the different treating depth requirement of flue gas, and described smoke harnessing carried out before administering denitrating flue gas; Smoke harnessing to eliminate in flue gas flue dust harmful components to the poisoning effect of denitrating system (SCR) catalyst, extending catalyst service life, improves denitration efficiency, reduces denitration operating cost; Environment protection treating of the present invention can not cause secondary pollution to environment.
(2) waste heat recovery rate is high, waste heat boiler evaporation capacity, pressure and temperature stabilization
Waste heat boiler of the present invention becomes π shape to arrange, and characteristics of compact layout, floor space are little; Invest less, the capital expenditures of reduction enterprise; The thermal efficiency that effectively improve waste heat boiler is said from thermal conduction study angle;
System of the present invention realizes energy cascade utilization, and by the setting of high and low parameter two-stage waste heat boiler, waste heat recovery rate can improve more than 20% than other system; By arranging preposition heat-transfer area, obtaining the waste heat recovery of realization to the high temperature section of flue gas while fume environment protection administers preference temperature (320 DEG C ~ 350 DEG C); Described system waste heat boiler employing is two is installed with meter, high-temperature flue gas introduces high parameter waste heat boiler in advance, low-temperature flue gas after high parameter residual heat boiler for exchanging heat again row introduces low parameter residual heat boiler for exchanging heat, make the evaporation capacity (steam production) of waste heat boiler, pressure and temperature stabilization, steam parameter is significantly improved simultaneously.
(3) field condition strong adaptability
Waste heat boiler of the present invention comprises high parameter waste heat boiler and low parameter waste heat boiler, can according to field condition, and described high parameter waste heat boiler independently can arrange also can combine with described low parameter waste heat boiler and arrange; Also adjust device shaped and size flexibly according to existence conditions, for manufacturing and designing, in-site installation and operation maintenance bring great convenience.
(4) combined modularization design
Environment protection treating device of the present invention and waste-heat recovery device, adopt modularized design, and manufactory's assembling is dispatched from the factory, and improves device fabrication quality and in-site installation speed.
Accompanying drawing explanation
Fig. 1 is the structural representation of an example of the improvement of natural gas float glass furnace fume environment protection and residual neat recovering system, and namely high parameter waste heat boiler and the combination of low parameter waste heat boiler are arranged;
Fig. 2 is the structural representation of another example of the improvement of natural gas float glass furnace fume environment protection and residual neat recovering system, namely independently arranges high parameter waste heat boiler recovery system;
Fig. 3 is the flue on-off control method thereof structural representation of the improvement of natural gas float glass furnace fume environment protection and residual neat recovering system;
In figure: 1. natural gas float glass furnace, 2. π shape waste heat boiler, 3. dust pelletizing system (EP), 4. denitrating system (SCR), 5. high parameter waste heat boiler, 6. low parameter waste heat boiler, 7. air-introduced machine, 8. smoke taking mouth, 9. time mouth, 10. flue shutter, 11. smoke taking mouth flashboards, 12. times mouth flashboards.
Detailed description of the invention
Accompanying drawing discloses the structural representation of the specific embodiment of the invention without limitation, is further elaborated technical scheme of the present invention below with reference to the drawings and specific embodiments.
The invention discloses a kind of natural gas float glass furnace fume environment protection to administer and residual neat recovering system, comprise waste heat boiler, dust pelletizing system, denitrating system and air-introduced machine; Glass furnace is communicated with waste heat boiler by flue, by air-introduced machine glass furnace fume taken out and cause waste heat boiler, glass furnace fume is down to preference temperature introducing dust pelletizing system through waste heat boiler and denitrating system carries out environment protection treating, glass furnace fume after environment protection treating introduces residual heat boiler for exchanging heat again, by induced draft blower withdraws, enter air.Environment protection treating system, the electric precipitation arranged by many electric fields (EP) system realizes the different treating depth requirement of flue gas, and described smoke harnessing carried out before administering denitrating flue gas; Smoke harnessing to eliminate in flue gas flue dust harmful components to the poisoning effect of denitrating system (SCR) catalyst, extending catalyst service life, improves denitration efficiency, reduces denitration operating cost; Environment protection treating of the present invention can not cause secondary pollution to environment.Residual neat recovering system, it is based on energy cascade utilization principle, according to the flue-gas temperature parameter of glass furnace, hierarchically configure the waste heat boiler (high parameter waste heat boiler and low parameter waste heat boiler) of different operational factor, obtain the steam that respective level is corresponding, realize the high efficiente callback of the fume afterheat of glass furnace; Specifically, for making fume afterheat be reclaimed to greatest extent, the present invention carries out point step to the flue gas in flue and reclaims: high-temperature flue gas, adopts high parameter waste heat boiler to carry out waste heat recovery, and low-temperature flue gas, then adopt low parameter waste heat boiler to carry out waste heat recovery.In view of the smog discharge temperature of glass furnace is usually at 400 DEG C ~ 520 DEG C, the optimal reaction temperature of SCR flue-gas denitration process, at 280 DEG C ~ 420 DEG C, therefore before carrying out denitration process, need be lowered the temperature to flue gas.Before denitration, do not realize separately flue gas heat reclaim flue gas cool-down, the huge waste of the energy will be caused.
Fig. 1 discloses a kind of natural gas float glass furnace fume environment protection comprising step UTILIZATION OF VESIDUAL HEAT IN module and administers and residual neat recovering system, described system comprises natural gas float glass furnace 1, the waste heat boiler 2 arranged in π shape, described waste heat boiler 2 comprises high parameter waste heat boiler 5 and low parameter waste heat boiler 6, the arrival end of the waste heat boiler 2 that π shape is arranged is communicated with natural gas float glass furnace 1 port of export by flue, its port of export is communicated with air-introduced machine 7 arrival end by flue, and the port of export of described air-introduced machine 7 is communicated with air by flue; Described high parameter waste heat boiler 5 be provided with smoke taking mouth 8 and return mouth 9, described smoke taking mouth 8 is arranged at the arrival end of waste heat boiler 2 and returns between mouth 9, smoke taking mouth 8 and return between mouth 9 and be provided with high temperature section heat-transfer area, returns in being provided with between mouth 9 and the port of export of waste heat boiler 2, low-temperature zone heat-transfer area; One end of dust pelletizing system (EP) 3 is communicated with described smoke taking mouth 8, and the other end is communicated with one end of denitrating system (SCR) 4, and the other end of described denitrating system (SCR) 4 is communicated with described time mouth 9; Described smoke taking mouth 8 is provided with smoke taking mouth flashboard 11, described time mouth 9 is provided with back mouth flashboard 12, smoke taking mouth 8 and return between mouth 9 and be provided with flue shutter 10, the keying (simultaneously) of described smoke taking mouth flashboard 11 and time mouth flashboard 12 controls the flue break-make between described smoke taking mouth 8 and described time mouth 9 and described dust pelletizing system (EP) 3 and denitrating system (SCR) 4; The keying of described flue shutter 10 controls the waste heat boiler flue break-make between described smoke taking mouth 8 and time mouth 9; High parameter waste heat boiler 5 and low parameter waste heat boiler 6, composition step UTILIZATION OF VESIDUAL HEAT IN dual pressure system.Concrete, the initial ejection flue gas of natural gas float glass furnace 1 is connected with waste heat boiler 2 arrival end arranged in π shape by flue, high-temperature flue gas flows through the preposition heat-transfer area of high parameter waste heat boiler 5 and is down to 320 DEG C ~ 350 DEG C, flue gas after cooling is introduced dust pelletizing system (EP) 3 through smoke taking mouth 8 and is carried out smoke harnessing, flue gas after smoke harnessing enters denitrating system (SCR) 4 and carries out denitration improvement, flue gas after environment protection treating introduces high parameter waste heat boiler 5 heat exchange again through returning mouth 9, low-temperature flue gas after high parameter waste heat boiler 5 heat exchange is introduced low parameter waste heat boiler 6 and is carried out heat exchange, after the flue gas completing environment protection treating and waste heat recovery is aspirated by air-introduced machine 7, air is entered through chimney.Carbonated drink flow process: soft water feeds low parameter waste heat boiler 6, removes the dissolved oxygen in soft water through low parameter waste heat boiler 6, after pump into high parameter waste heat boiler 5 heat exchange produce steam (saturated or overheated), be sent to steam pipe system.Wherein: low parameter waste heat boiler refers to the boiler of operating pressure at 0.2 ~ 0.3MPa, this type of boiler is generally applied to from deaerating type of cycles or the filling of two pressure steam turbine, is to realize a kind of effective way to low-temperature flue gas heat recovery; High parameter waste heat boiler is for low parameter waste heat boiler, and its main operating pressure is distributed in 1.0 ~ 2.5MPa; Getting of its pressure is that height according to flue-gas temperature is determined surely, and it is higher that cigarette Wen Yuegao can get fixed fortune pressure row power, otherwise lower.
Fig. 2 discloses a kind of natural gas float glass furnace fume environment protection comprising high parameter UTILIZATION OF VESIDUAL HEAT IN module and administers and residual neat recovering system, described system comprises natural gas float glass furnace 1, the waste heat boiler 2 arranged in π shape, described waste heat boiler 2 is high parameter waste heat boiler 5, the arrival end of the waste heat boiler 2 that π shape is arranged is communicated with natural gas float glass furnace 1 port of export by flue, its port of export is communicated with air-introduced machine 7 arrival end by flue, and the port of export of described air-introduced machine 7 is communicated with air by flue; Described high parameter waste heat boiler 5 be provided with smoke taking mouth 8 and return mouth 9, described smoke taking mouth 8 is arranged at the arrival end of waste heat boiler 2 and returns between mouth 9, smoke taking mouth 8 and return between mouth 9 and be provided with high temperature section heat-transfer area, returns in being provided with between mouth 9 and the port of export of waste heat boiler 2, low-temperature zone heat-transfer area; One end of dust pelletizing system (EP) 3 is communicated with described smoke taking mouth 8, and the other end is communicated with one end of denitrating system (SCR) 4, and the other end of described denitrating system (SCR) 4 is communicated with described time mouth 9; Described smoke taking mouth 8 is provided with smoke taking mouth flashboard 11, described time mouth 9 is provided with back mouth flashboard 12, smoke taking mouth 8 and be provided with flue shutter 10 on returning between mouth 9 waste heat boiler flue cross section, the keying (simultaneously) of described smoke taking mouth flashboard 11 and time mouth flashboard 12 controls the flue break-make between described smoke taking mouth 8 and described time mouth 9 and described dust pelletizing system (EP) 3 and denitrating system (SCR) 4; The keying of described flue shutter 10 controls the waste heat boiler flue break-make between described smoke taking mouth 8 and time mouth 9.Concrete, the initial ejection flue gas of natural gas float glass furnace 1 is connected with waste heat boiler 2 arrival end arranged in π shape by flue, high-temperature flue gas flows through the preposition heat-transfer area of high parameter waste heat boiler 5 and is down to 320 DEG C ~ 350 DEG C, flue gas after cooling is introduced dust pelletizing system (EP) 3 through smoke taking mouth 8 and is carried out smoke harnessing, flue gas after smoke harnessing enters denitrating system (SCR) 4 and carries out denitration improvement, flue gas after environment protection treating introduces high parameter waste heat boiler 5 heat exchange again through returning mouth 9, after the flue gas completing environment protection treating and waste heat recovery is aspirated by air-introduced machine 7, air is entered through chimney.Carbonated drink flow process: deoxygenation soft water feeds high parameter waste heat boiler 5, produces steam (saturated or overheated) through high parameter waste heat boiler 5 heat exchange, is sent to steam pipe system.
Fig. 3 discloses the flue on-off control method thereof of the improvement of a kind of natural gas float glass furnace fume environment protection and residual neat recovering system, smoke taking mouth 8 and the flue shutter 10 returned between mouth 9 are closed, smoke taking mouth flashboard 11 on smoke taking mouth 8 and the mouth flashboard 12 that returns returned on mouth 9 are opened simultaneously, and described natural gas float glass furnace fume environment protection is administered and residual neat recovering system runs; Smoke taking mouth 8 and the flue shutter 10 returned between mouth 9 are opened, and the smoke taking mouth flashboard 11 on smoke taking mouth 8 and the mouth flashboard 12 that returns returned on mouth 9 are closed simultaneously, and described natural gas float glass furnace flue gas waste heat recovery system runs.
High parameter waste heat boiler in the present invention according to the needs of system, can arrange steam superheater, evaporimeter and soft water heater; Low parameter waste heat boiler according to the needs of system, can arrange evaporimeter and soft water heater.
The preferred specific embodiment of the present invention described by reference to the accompanying drawings is above only for illustration of embodiments of the present invention; instead of as the restriction to aforementioned invention object and claims content and scope; every according to technical spirit of the present invention to any simple modification made for any of the above embodiments, equivalent variations and modification, all still belong to the technology of the present invention and rights protection category.
Claims (10)
1. a natural gas float glass furnace fume environment protection is administered and residual neat recovering system, comprise waste heat boiler and air-introduced machine, the flue gas that natural gas float glass furnace is discharged is taken out by air-introduced machine and is caused waste heat boiler, it is characterized in that, also comprises dust pelletizing system and denitrating system; The exhaust opening of natural gas float glass furnace is communicated with waste heat boiler by flue, the flue of waste heat boiler is by being separated into separate two parts perpendicular to the flue shutter of flue gas flow direction, be respectively the first flue, the second flue, described first flue, the second flue are arranged along flue gas flow direction order in waste heat boiler, and the sidewall of the first flue is provided with smoke taking mouth, set up position the to meet temperature requirements that out of stock system carries out denitration process of this smoke taking mouth, the sidewall of the second flue is then provided with back mouth; In addition, be linked in sequence dust pelletizing system and out of stock system between smoke taking mouth and time mouth.
2. natural gas float glass furnace fume environment protection is administered and residual neat recovering system according to claim 1, it is characterized in that, described waste heat boiler is that π shape is arranged; Described π shape waste heat boiler one end is provided with gas approach, and the gas approach of waste heat boiler is communicated with by the exhaust opening of flue with natural gas float glass furnace, and the other end is provided with exhanst gas outlet, and the pump orifice of air-introduced machine is arranged towards the exhanst gas outlet of waste heat boiler; Flue shutter is arranged on a side arm of π shape waste heat boiler.
3. according to claim 1 or 2, natural gas float glass furnace fume environment protection is administered and residual neat recovering system, it is characterized in that, the position that arranges of described smoke taking mouth and time mouth is all fitted with mouth flashboard; The break-make that the keying of described mouth flashboard controls described smoke taking mouth and waste heat boiler flue or returns between mouth and waste heat boiler flue.
4. natural gas float glass furnace fume environment protection is administered and residual neat recovering system according to claim 2, and it is characterized in that, π shape waste heat boiler comprises high parameter waste heat boiler, the low parameter waste heat boiler of Combination application; Wherein, high parameter waste heat boiler corresponds in π shape waste heat boiler, and this side arm installing flue shutter is installed, and low parameter waste heat boiler is then installed corresponding to another side arm of π shape waste heat boiler.
5. natural gas float glass furnace fume environment protection is administered and residual neat recovering system according to claim 4, and it is characterized in that, described high parameter waste heat boiler is provided with steam superheater, evaporimeter and soft water heater.
6. natural gas float glass furnace fume environment protection is administered and residual neat recovering system according to claim 4, and it is characterized in that, described low parameter waste heat boiler is provided with evaporimeter and soft water heater; The evaporimeter of described low parameter waste heat boiler and the heat-transfer area tubing of soft water heater are corrosion resisting steel.
7. natural gas float glass furnace fume environment protection is administered and residual neat recovering system according to claim 2, it is characterized in that, described π shape waste heat boiler adopts the independent high parameter waste heat boiler arranged, and the soft water heater heat-transfer area tubing of the high parameter waste heat boiler that this is independently arranged is corrosion resisting steel.
8. natural gas float glass furnace fume environment protection is administered and residual neat recovering system according to claim 1, it is characterized in that, described out of stock system is the out of stock system of selective catalytic reduction, in described waste heat boiler flue, is 320 DEG C ~ 350 DEG C in the flue-gas temperature at smoke taking mouth setting position place.
9. natural gas float glass furnace fume environment protection is administered and residual neat recovering system according to claim 8, and it is characterized in that, described dust pelletizing system is electric dust removing system.
10. natural gas float glass furnace fume environment protection is administered and residual neat recovering system according to claim 1, it is characterized in that, described flue shutter is turnover flue shutter, this flue shutter is arranged in the flue of waste heat boiler by switching mechanism, and described flue shutter is supported on the cross section of waste heat boiler flue by aforementioned switching mechanism.
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| CN201410515118.8A CN104315865A (en) | 2014-09-30 | 2014-09-30 | Natural gas floating method glass kiln furnace smoke gas environment-friendly government and afterheat recovery system |
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| CN201410515118.8A CN104315865A (en) | 2014-09-30 | 2014-09-30 | Natural gas floating method glass kiln furnace smoke gas environment-friendly government and afterheat recovery system |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
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| CN114887409A (en) * | 2022-04-26 | 2022-08-12 | 成都易态科技有限公司 | Method for efficiently combining waste heat utilization, dust removal and denitration of high-temperature flue gas |
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| CN114887409A (en) * | 2022-04-26 | 2022-08-12 | 成都易态科技有限公司 | Method for efficiently combining waste heat utilization, dust removal and denitration of high-temperature flue gas |
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Application publication date: 20150128 |