CN103007743A - SCR (Selective Catalytic Reduction) denitrification device for flue gas of glass kiln - Google Patents
SCR (Selective Catalytic Reduction) denitrification device for flue gas of glass kiln Download PDFInfo
- Publication number
- CN103007743A CN103007743A CN201210536560XA CN201210536560A CN103007743A CN 103007743 A CN103007743 A CN 103007743A CN 201210536560X A CN201210536560X A CN 201210536560XA CN 201210536560 A CN201210536560 A CN 201210536560A CN 103007743 A CN103007743 A CN 103007743A
- Authority
- CN
- China
- Prior art keywords
- ammonia
- flue gas
- scr
- waste heat
- denitrification apparatus
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Images
Abstract
The invention discloses an SCR (Selective Catalytic Reduction) denitrification device for flue gas of a glass kiln. The SCR denitrification device comprises waste heat boilers and a denitrification reactor, a gas inlet end of the ammonia process SCR denitrification reactor is communicated with the first waste heat boiler to receive flue gas which is cooled to 320-420 DEG C through heat exchange, and a gas outlet end of the SCR denitrification reactor is communicated with the second waste heat boiler and discharges the denitrified flue gas into a chimney after the denitrified flue gas is cooled to 150-170 DEG C through heat exchange; and the denitrification reactor comprises an ammonia injection grid, an ammonia-flue gas mixer, a rectifier, and a multilayer catalyst bed and a soot blowers thereof, which are arranged in a flue gas channel in sequence. The SCR denitrification device is wide in application range, does not influence the power generation of the waste heat boilers, and realizes the waste heat utilization and denitrification; regulating valves are arranged in all links of the whole system so as to ensure the denitrification effect and save the ammonia usage amount; and the sooth blowers of the reactor adopts steam blowing, the pressure is precisely controlled, the steam of the waste heat boilers arranged in a matching can be fully utilized; and an openable door arranged at a position where the denitrification system is connected with the waste heat boilers can ensure that the waste heat boilers can independently or simultaneously operate.
Description
Technical field
The invention belongs to environmental pollution improvement and air pollution control technique field, especially belong to a kind of device that carries out denitrating flue gas by SCR (SCR), particularly a kind of glass factory equipment for denitrifying flue gas.
Background technology
Nitrogen oxide is one of Air Pollutant Discharge, has brought the harm of acid rain and photochemical fog.Increasingly strict along with China environmental protection law, rule and standard, technology maturation, denitration rate SCR (SCR) technology high, non-secondary pollution will become the mainstream technology in China denitrating flue gas market gradually.The glass furnace of glass factory is as pollution sources of NOx discharging, reinforcement along with popular environmental requirement and consciousness, China relevant departments issues " flat glass industry atmosphere pollutants emission standards " in 2011, clear NOx concentration of emission is 700mg/m3 (8% oxygen content) in the standard, process as not carrying out denitration, existing glass furnace fume does not meet discharge standard and requires.All there is supporting Waste Heat Generation in existing most glass factories, and more good utilisation existing equipment, abundant energy savings are that glass furnace fume is processed the technical problem of always exploring therefore to select what method and apparatus denitration.
SCR(selective catalytic reduction, Selective Catalytic Reduction) be present gas denitrifying technology preferably, it is method of denitration behind a kind of stove, is to utilize reducing agent (NH
3, urea) under the metallic catalyst effect, optionally generate N with NOx reaction
2And H
2O, rather than by O
2Oxidation, at present SCR technique mainly is divided into two kinds of ammonia process SCR and urea method SCR.Two kinds of methods all are to utilize ammonia to the restoring function of NOx, with NOx, mainly are NO wherein under the effect of catalyst, are reduced to the N less to atmospheric effect
2And H
2O.
The catalyst that uses in SCR is greatly mainly with TiO
2Be carrier, with V
2O
5Or V
2O
5-WO
3Or V
2O
5-MoO
3For active component is made honeycomb fashion, board-like or corrugated three types catalyst.The reaction temperature difference that different catalyst is suitable.If reaction temperature is on the low side, the activity of catalyst can reduce, and causes denitration efficiency to descend, and if catalyst continue at low temperatures operation and can make catalyst generation permanent damage; If reaction temperature is too high, NH
3Easily oxidized, the NOx growing amount increases, and also can cause the phase transformation of catalyst material, and the activity of catalyst is degenerated.At present, the SCR system adopts high temperature catalyst mostly both at home and abroad, the reaction temperature interval is 320 ℃～420 ℃, therefore must enter temperature to flue gas before flue gas enters denitrification apparatus controls, existing denitrification apparatus usually is equipped with flue gas or cooling device, to adapt to the needs of SCR denitrification apparatus.
Summary of the invention
The present invention discloses a kind of SCR denitrification apparatus of glass furnace fume according to the deficiencies in the prior art.The problem to be solved in the present invention provide a kind of more energy-conservation, with the SCR denitrification apparatus of the more collaborative coupling of each equipment of existing glass furnace.
The present invention is achieved through the following technical solutions:
The SCR denitrification apparatus of glass furnace fume comprises waste heat boiler and Benitration reactor, it is characterized in that: described Benitration reactor is ammonia process SCR Benitration reactor; The front inlet end of described ammonia process SCR Benitration reactor is communicated with the first residual heat boiler for exchanging heat, the final vacuum end is communicated with the second residual heat boiler for exchanging heat;
The described connection with the first residual heat boiler for exchanging heat is that the first waste heat boiler changing-over receipts glass furnace fume is inputted ammonia process SCR Benitration reactor after heat exchange is cooled to 320～420 ℃;
The described connection with the second residual heat boiler for exchanging heat is that the second waste heat boiler will enter chimney by flue gas after the denitration of ammonia process SCR Benitration reactor after heat exchange is cooled to 150 ℃～170 ℃.
Described ammonia process SCR Benitration reactor comprises ammonia-spraying grid, ammonia-flue gas blender, rectifier and the multi-layer catalyst bed that is installed in successively in the exhaust gases passes, is provided with soot blower every layer of catalyst bed.
Further described soot blower is communicated with the waste heat boiler steam outlet, and boiler sootblowing steam pressure is 0.6～0.8MPa, blows ash during catalyst bed stressor layer 〉=400pa, and catalyst bed stressor layer≤200pa stops to blow ash.Described catalyst bed stressor layer is the flue gas pressures of catalyst bed inlet end face.
There is the valve of the unlatching the regulated size of flue gas inspection device and checkout gear control at each flue gas import and export place in the further described SCR denitrification apparatus.
Above-mentioned SCR denitrification apparatus also comprises the ammonia feeding mechanism that is made of the connecting pipe between storage ammonia tank, liquefied ammonia delivery pump, liquid ammonia evaporator, gas ammonia surge tank, ammonia thinning tank, ammonia recovery unit and each equipment.
Above-mentioned ammonia-spraying grid is made of the nozzle that is evenly arranged in the flue and be positioned on the same level, and described nozzle bore is 8 millimeters of φ, and the ammonia jet velocity is 100～200m/s.Ammonia-spraying grid is for the ammonia behind dilution air being sprayed into uniformly a kind of device of flue, and what of nozzle quantity are decided according to the ammonia spraying amount of nitrogen oxides in effluent needs in the ammonia-spraying grid.
Above-mentioned ammonia-flue gas blender is after ammonia sprays into flue, with ammonia and the mixed uniformly a kind of device of flue gas, concrete position is specifically considered according to flue deployment scenarios in the project, ammonia-flue gas blender hybrid element is stainless steel, by being fixed on the mixed cell internals in the mixing duct, make ammonia and flue gas produce the fluid cutting, shear, rotate and mix; Reach dispersion and well-mixed purpose between the fluid.
Above-mentioned rectifier is arranged in 1 meter position of ground floor catalyst bed front end, and described rectifier forms by evenly being arranged on the exhaust gases passes that rhombus in the flue or triangle riser consist of.Rectifier is a kind of device that evenly arranges by catalyst behind the SCR reactor in order to enter at flue gas; from the equipment of flowing through of flue gas sequentially; rectifier is arranged on the front of catalyst; namely flue gas enters catalyst area through rectifier rectification after evenly first again; rectifier is arranged at the bottom of the reactor inlet flue 1 meter position; flue gas is after the deflector rough segmentation; divide equally through rectifier again; rectifier is by rhombus; the triangle riser forms exhaust gases passes, is conducive to the consolidation of flow of flue gas; reduce flue gas washing away catalyst; steady flow condition; guard catalyst.
Above-mentioned catalyst bed has three layers, and 1 meter every layer thick, and the interval is 1.5 meters between each layer.
Above-mentioned Benitration reactor and waste heat boiler junction are provided with door to be opened/closed, and gate open to be opened/closed is normal to adopt sealable baffle door structure, cut off being connected of denitrating system and waste heat boiler when being used for accident condition, guarantee not affect waste heat boiler and move.
The flue gas detecting system of with good grounds denitrating flue gas rate and tail gas amount of ammonia slip control ammonia spraying amount in the above-mentioned SCR denitrification apparatus.
Above-mentioned ammonia feeding mechanism can also comprise equipment such as unloading ammonia tank car, unloading pump and waste water pump.Store up the ammonia tank and pass through unloading pump, fluid assembly and disassembly arm is connected with the factory external ammonia tank car that unloads, unloading ammonia compressor is connected with fluid assembly and disassembly arm with storage ammonia tank by pipeline, storage ammonia tank is connected with liquid ammonia evaporator by the liquefied ammonia delivery pump, can not need the liquefied ammonia delivery pump in the higher area of southern temperature, on the pipeline adjustment doors is housed between liquefied ammonia delivery pump and the liquid ammonia evaporator, control gas ammonia flow, liquid ammonia evaporator is connected by pipeline with the gas ammonia surge tank, adjustment doors is housed on the connecting pipe, the ammonia thinning tank is connected with each equipment exhaust system by pipeline, and what system discharged delivers to plant area appointed place processing by the next fire water dilution of plant area is rear by waste water pump without ammonia.
The gas ammonia surge tank is connected with ammonia-air mixer by pipeline, and control valve is housed on the pipeline, and ammonia-air mixer is connected with ammonia-spraying grid with dilution air by pipeline; Described gas approach baffle door is installed in waste heat boiler denitration joint place, and the gas approach baffle door is connected afterwards by flue with ammonia-spraying grid and is connected with ammonia-flue gas blender, and smoke gas flow directly enters reactor behind ammonia-flue gas blender; Flue gas fairing, catalyst, soot blower are set in the reactor; Flue gas returns waste heat boiler through behind the reactor by the exhanst gas outlet baffle door.
In the above-mentioned whole device flow process, for ease of operation, for the ammonia links control valve is arranged.
Catalyst consumption in the catalyst bed setting is generally 30～40m3, and variant because of glass factory's exhaust gas volumn and flue gas NOx content, the catalyst chemical life-span is variant, and a small amount of frit is very little on the impact of catalyst chemical life-span in the flue gas content.
Correct position is provided with adjustment doors between each equipment, when being used for the flue gas load fluctuation regulating system use the ammonia amount, guarantee NOx content and the amount of ammonia slip of denitration outlet.
Benitration reactor cloth is set up near waste heat boiler, makes ammonia-spraying grid and ammonia-flue gas blender characteristics of compact layout, reduces the temperature drop that denitrification apparatus is imported and exported, and reduces the cogeneration heat loss.
For waste heat boiler, denitration gas approach, outlet are provided with baffle door, are used for cutting off denitrification apparatus and waste heat boiler, also can be used for regulating the cigarette air quantity.
The present invention is fit to all glass factory's glass furnace fumes and processes, and glass furnace fume is generally 90000～200000Nm3/h, and NOx content is generally 2000～5000mg/Nm3,, reaction temperature satisfies 320～420 ℃.After the flue gas of glass furnace picked out by waste heat boiler, successively by entering the denitration of SCR reactor behind gas approach baffle door, ammonia-spraying grid, the ammonia-flue gas mixing arrangement, the flue gas after the denitration returned waste heat boiler by the exhanst gas outlet baffle door.Meanwhile, unload the ammonia tank car and by fluid assembly and disassembly arm liquefied ammonia is sent into storage ammonia tank stores, liquefied ammonia in the storage ammonia tank is delivered to liquid ammonia evaporator by the liquefied ammonia delivery pump and is become gas ammonia, through entering ammonia-spraying grid after by adjustment doors after the gas ammonia surge tank buffering, be linked to be a complete denitrating system with flue gas system from liquid ammonia evaporator gas ammonia out.On the pipeline adjustment doors is housed between liquefied ammonia delivery pump and the liquid ammonia evaporator, regulator solution ammonia evaporator liquid level and keep the loine pressure balance.Be provided with NOx concentration monitor point at denitration outlet, the adjustment doors on signal and the ammonia pipeline forms interlocking, and when the NOx change in concentration, adjustment doors can be adjusted aperture by signal.Because ammonia is dangerous goods, for security of system, is furnished with accessory system, the little subsystem such as, accident spray emptying such as nitrogen replacement, ammonia.
Major advantage of the present invention is:
1, this device is applied widely, is applicable to all glass factory's glass furnaces.General 400～550 ℃ of the flue gas of glass furnace outlet, high-temperature flue gas enter denitrating system after being reduced to 320～420 ℃ of temperature that are fit to denitration through waste heat boiler, and the flue gas after denitration returns waste heat boiler and continues the heat exchange utilization.This denitrification apparatus does not affect Waste Heat Generation, reaches UTILIZATION OF VESIDUAL HEAT IN and the denitration purpose of neglecting neither.
2, links is provided with control valve in the whole system, guarantees to reach denitration effect and saves the ammonia consumption.The denitration rate can reach 98% at initial operation stage, still can reach more than 80% in the later stage, and the ammonia utilization rate reaches 99%.
3, the reactor soot blower adopts steam soot blowing, pressure control accurately, boiler sootblowing steam pressure is 0.6～0.8MPa, is up to 1.4MPa, blows ash during catalyst bed stressor layer 〉=400pa, catalyst bed stressor layer≤200pa stops to blow ash, guarantees to blow grey effect.The jet chimney connecting line is simple, and handled easily takes full advantage of the waste heat boiler steam that coupling arranges.
4, denitrating system and waste heat boiler interface are provided with door to be opened/closed, cut off denitrating system and waste heat boiler when being used for accident condition, guarantee not affect the waste heat boiler operation.
Description of drawings
Fig. 1 is denitration workflow schematic diagram of the present invention;
Fig. 2 is denitrification apparatus schematic diagram of the present invention.
Among the figure, the 1st, catalyst bed, the 2nd, rectifier, the 3rd, soot blower, the 4th, ammonia-flue gas blender, the 5th, spray ammonia pipeline, the 6th, ammonia-spraying grid, the 7th, baffle door, R are the flue gas inlet ends, F is the flue gas exhaust end.
The specific embodiment
Below by embodiment the present invention is conducted further description; the present embodiment only is used for the present invention is further detailed; but can not be interpreted as limiting the scope of the invention, those skilled in the art can make some nonessential improvement and adjustment belongs to the scope of protection of the invention according to the content of the invention described above.
In conjunction with Fig. 1 and Fig. 2.
Fig. 1 is denitration workflow schematic diagram of the present invention, and Fig. 2 is the denitrification apparatus schematic diagram.The SCR denitrification apparatus of glass furnace fume of the present invention comprises waste heat boiler and Benitration reactor, Benitration reactor is ammonia process SCR Benitration reactor, its front inlet end R be communicated with the first waste heat boiler receive through heat exchange be cooled to 320～420 ℃ of flue gases, final vacuum end F is communicated with the second waste heat boiler, and will enter chimney after heat exchange is cooled to 150 ℃～170 ℃ through flue gas after the ammonia process SCR denitration.
The ammonia process SCR Benitration reactor that the present invention adopts comprises ammonia-spraying grid 6, ammonia-flue gas blender 4, rectifier 2 and the multi-layer catalyst bed 1 that is installed in successively in the exhaust gases passes, is provided with soot blower 3 in every layer of catalyst bed 1.
Soot blower 3 is communicated with the waste heat boiler steam outlet, and boiler sootblowing steam pressure is 0.6～0.8MPa, is up to 1.4MPa, blows ash during catalyst bed stressor layer 〉=400pa, and catalyst bed stressor layer≤200pa stops to blow ash.Utilize both energy savings of waste heat boiler steam, the connection nearby of equipment pipeline maximum possible, above-mentioned steam pressure and opening and closing pressure energy realize blowing grey effect and energy savings best after deliberation.
There is the valve of the unlatching the regulated size of flue gas inspection device and checkout gear control at each flue gas import and export place in the SCR denitrification apparatus.Above-mentioned flue gas inspection adopts conventional equipment and requires to regulate control according to different flue gas turnover amount controls with control device.
The flue gas detecting system of with good grounds denitrating flue gas rate and tail gas amount of ammonia slip control ammonia spraying amount in the SCR denitrification apparatus.Above-mentioned denitrating flue gas rate and the detection of tail gas amount of ammonia slip and control device and flue gas detecting system coupling realize that the denitration rate can reach 98% at initial operation stage, reach more than 80% in the later stage, and the ammonia utilization rate reaches 99% requirement.
Ammonia-spraying grid 6 is made of the nozzle that is evenly arranged in the flue and be positioned on the same level, and nozzle bore is 8 millimeters of φ, and the ammonia jet velocity is 100～200m/s.Ammonia-spraying grid 6 is for the ammonia behind dilution air being sprayed into uniformly a kind of device of flue, and what of nozzle quantity are decided according to the ammonia spraying amount of nitrogen oxides in effluent needs in the ammonia-spraying grid.
Ammonia-flue gas blender 4 is after ammonia sprays into flue, with ammonia and the mixed uniformly a kind of device of flue gas, concrete position is specifically considered according to the flue deployment scenarios, ammonia-flue gas blender 4 hybrid elements are stainless steel, by being fixed on the mixed cell internals in the mixing duct, make ammonia and flue gas produce the fluid cutting, shear, rotate and mix; Reach dispersion and well-mixed purpose between the fluid.The described mixed cell internals that are fixed in the mixing duct are arranged on the various realization fluid cuttings in the mixing duct, in the fluid passage, the turbulent element of shearing, rotating and mix.
As shown in Figure 2, catalyst bed 1 has three layers in apparatus of the present invention, and 1 meter every layer thick, and the interval is 1.5 meters between each layer.The catalyst consumption that arranges in catalyst bed 1 is generally 30～40m3, and variant because of glass factory's exhaust gas volumn and flue gas NOx content, the catalyst chemical life-span is variant, and a small amount of frit is very little on the impact of catalyst chemical life-span in the flue gas content.
Benitration reactor and waste heat boiler junction are provided with door to be opened/closed, and gate open to be opened/closed is normal to adopt sealable baffle door 7 structures, cut off being connected of denitrating system and waste heat boiler when being used for accident condition, guarantee not affect waste heat boiler and move.
The SCR denitrification apparatus also comprises the ammonia feeding mechanism that is made of the connecting pipe between storage ammonia tank, liquefied ammonia delivery pump, liquid ammonia evaporator, gas ammonia surge tank, ammonia thinning tank, ammonia recovery unit and each equipment.The ammonia feeding mechanism can also comprise equipment such as unloading ammonia tank car, unloading pump and waste water pump.Store up the ammonia tank and pass through unloading pump, fluid assembly and disassembly arm is connected with the factory external ammonia tank car that unloads, unloading ammonia compressor is connected with fluid assembly and disassembly arm with storage ammonia tank by pipeline, storage ammonia tank is connected with liquid ammonia evaporator by the liquefied ammonia delivery pump, can not need the liquefied ammonia delivery pump in the higher area of southern temperature, on the pipeline adjustment doors is housed between liquefied ammonia delivery pump and the liquid ammonia evaporator, control gas ammonia flow, liquid ammonia evaporator is connected by pipeline with the gas ammonia surge tank, adjustment doors is housed on the connecting pipe, the ammonia thinning tank is connected with each equipment exhaust system by pipeline, and what system discharged delivers to plant area appointed place processing by the next fire water dilution of plant area is rear by waste water pump without ammonia.
The gas ammonia surge tank is connected with ammonia-air mixer 4 by pipeline, and control valve is housed on the pipeline, and ammonia-air mixer 4 is connected with ammonia-spraying grid with dilution air by pipeline and is connected; It is gas approach end R that described gas approach baffle door 7 is installed in waste heat boiler denitration joint place, and gas approach baffle door 7 is connected afterwards by flue with ammonia-spraying grid 6 and is connected with ammonia-flue gas blender 4, and smoke gas flow directly enters reactor behind ammonia-flue gas blender 4; Flue gas rectifier 2, catalyst bed 1, soot blower 3 are set in the reactor; Flue gas is through being that flue gas exhaust end F returns waste heat boiler by exhanst gas outlet baffle door 7 behind the reactor.
In the above-mentioned whole device flow process, for ease of operation, for the ammonia links control valve is arranged.
Correct position is provided with adjustment doors between each equipment, when being used for the flue gas load fluctuation regulating system use the ammonia amount, guarantee NOx content and the amount of ammonia slip of denitration outlet.
Benitration reactor cloth is set up near waste heat boiler, makes ammonia-spraying grid 1 and ammonia-flue gas blender 4 characteristics of compact layouts, reduces the temperature drop that denitrification apparatus is imported and exported, and reduces the cogeneration heat loss.
For waste heat boiler, denitration gas approach, outlet are provided with baffle door, are used for cutting off denitrification apparatus and waste heat boiler, also can be used for regulating the cigarette air quantity.
The present invention is fit to all glass factory's glass furnace fumes and processes, and glass furnace fume is generally 90000～200000Nm3/h, and NOx content is generally 2000～5000mg/Nm3,, reaction temperature satisfies 320～420 ℃.After the flue gas of glass furnace picked out by waste heat boiler, successively by entering the denitration of SCR reactor behind gas approach baffle door 7, ammonia-spraying grid 6, the ammonia-flue gas mixing arrangement 4, the flue gas after the denitration returned waste heat boiler by exhanst gas outlet baffle door 7.Meanwhile, unload the ammonia tank car and by fluid assembly and disassembly arm liquefied ammonia is sent into storage ammonia tank stores, liquefied ammonia in the storage ammonia tank is delivered to liquid ammonia evaporator by the liquefied ammonia delivery pump and is become gas ammonia, through entering ammonia-spraying grid 6 after by adjustment doors after the gas ammonia surge tank buffering, be linked to be a complete denitrating system with flue gas system from liquid ammonia evaporator gas ammonia out.On the pipeline adjustment doors is housed between liquefied ammonia delivery pump and the liquid ammonia evaporator, regulator solution ammonia evaporator liquid level and keep the loine pressure balance.Be provided with NOx concentration monitor point at denitration outlet, the adjustment doors on signal and the ammonia pipeline forms interlocking, and when the NOx change in concentration, adjustment doors can be adjusted aperture by signal.Because ammonia is dangerous goods, for security of system, is furnished with accessory system, the little subsystem such as, accident spray emptying such as nitrogen replacement, ammonia.
Case history
In certain Glass Co., Ltd., adopt denitrification apparatus of the present invention, idiographic flow is as follows:
The ammonia supply system disposes pipeline, instrument, valve supporting in ammonia bottle, nitrogen cylinder, ammonia evaporimeter, gas ammonia surge tank, ammonia mass flowmenter, ammonia control valve and the system.SCR denitrification apparatus area configurations has dilution air, induced-draught fan, denitrification apparatus flue entrance baffle door, outlet damper door, ammonia-spraying grid, ammonia-flue gas blender, fairing, catalyst, flue gas monitoring system, each layer of catalyst that remarkable platform is set.Ammonia bottle and nitrogen cylinder periodic replacement, the ammonia in the ammonia bottle by the road system enters the ammonia evaporimeter, and after evaporator evaporation, ammonia enters the gas ammonia surge tank, and ammonia is sent into ammonia-spraying grid through voltage stabilizing by mass flowmenter, control valve, ammonia-air mixer.
Flue gas picks out behind the waste heat boiler low temperature superheater, introduce denitrating system, successively flow through denitrification apparatus flue entrance baffle door, ammonia-spraying grid, ammonia-flue gas blender enters Benitration reactor, flue gas, ammonia gas mixture body are again through the flue deflector, flue gas-ammonia gas mixture enters catalyst area after the fairing rectification, nitrogen oxide under catalyst action in the flue gas and ammonia react generate the nitrogen G﹠W, the clean flue gas that removes the most of the nitrogen oxide is sent waste heat boiler low temperature superheater rear end back to through induced-draught fan, proceeds heat exchange.
Each layer of catalyst is provided with steam soot-blower, when rising to setting value 400pa, blows the reactor catalyst stressor layer ash: open the steam soot blowing main valve, carry out 1～2 minute heating coil, hydrophobic after, open again each layer and blow grey switch valve catalyst is successively carried out steam blast, treat that pressure drop closes soot-blowing valve when setting value 200pa again.For the low only 200mg/Nm of glass furnace dust content
3, viscosity is strong, granularity is little characteristics, between continuous operating period, adopt regular injection method, once the winding-up cycle is 12 hours, blows ash respond well.
In experimentation, the entrance nitrogen oxide is stabilized in 3416mg/Nm
3(8% oxygen content), control spray ammonia control valve opening 33%, the outlet nitrogen oxide can be reduced to 149mg/Nm
3, be lower than glass industry environmental emission standard (700mg/Nm in 2014
3).
Reactor, flue appearance adopt 150mm alumina silicate knitted blanket to carry out the one-level insulation, and alumina silicate knitted blanket outside adopts the high temperature glass wool of 100mm to carry out the secondary insulation again, and through measuring, the insulation hull-skin temperature is 30～35 degree.
Experiment showed, and adopt present technique to carry out glass furnace SCR denitration, can with the intact combination of glass furnace surplus heat of power plant boiler, neither affect cogeneration, reach simultaneously the purpose that removes nitrogen oxide, satisfy environmental requirement, namely be conducive to society and be of value to again enterprise.
Claims (10)
1. the SCR denitrification apparatus of a glass furnace fume comprises waste heat boiler and Benitration reactor, it is characterized in that:
Described Benitration reactor is ammonia process SCR Benitration reactor; The front inlet end of described ammonia process SCR Benitration reactor is communicated with the first residual heat boiler for exchanging heat, the final vacuum end is communicated with the second residual heat boiler for exchanging heat;
The described connection with the first residual heat boiler for exchanging heat is that the first waste heat boiler changing-over receipts glass furnace fume is inputted ammonia process SCR Benitration reactor after heat exchange is cooled to 320～420 ℃;
The described connection with the second residual heat boiler for exchanging heat is that the second waste heat boiler will enter chimney by flue gas after the denitration of ammonia process SCR Benitration reactor after heat exchange is cooled to 150 ℃～170 ℃.
2. the SCR denitrification apparatus of glass furnace fume according to claim 1, it is characterized in that: described ammonia process SCR Benitration reactor comprises ammonia-spraying grid, ammonia-flue gas blender, rectifier and the multi-layer catalyst bed that is installed in successively in the exhaust gases passes, is provided with soot blower every layer of catalyst bed.
3. the SCR denitrification apparatus of glass furnace fume according to claim 2, it is characterized in that: described soot blower is communicated with the waste heat boiler steam outlet, boiler sootblowing steam pressure is 0.6～0.8MPa, blow ash during catalyst bed stressor layer 〉=400pa, catalyst bed stressor layer≤200pa stops to blow ash.
4. it is characterized in that according to claim 1 and 2 or the SCR denitrification apparatus of 3 described glass furnace fumes: there is the big or small valve of regulated unlatchings of flue gas inspection device and checkout gear control at each flue gas import and export place in the described SCR denitrification apparatus.
5. the SCR denitrification apparatus of glass furnace fume according to claim 4 is characterized in that: described SCR denitrification apparatus comprises the ammonia feeding mechanism that is made of the connecting pipe between storage ammonia tank, liquefied ammonia delivery pump, liquid ammonia evaporator, gas ammonia surge tank, ammonia thinning tank, ammonia recovery unit and each equipment.
6. the SCR denitrification apparatus of glass furnace fume according to claim 5, it is characterized in that: described ammonia-spraying grid is made of the nozzle that is evenly arranged in the flue and be positioned on the same level, described nozzle bore is 8 millimeters of φ, and the ammonia jet velocity is 100～200m/s.
7. the SCR denitrification apparatus of glass furnace fume according to claim 5, it is characterized in that: described rectifier is arranged in 1 meter position of ground floor catalyst bed front end, and described rectifier forms by evenly being arranged on the exhaust gases passes that rhombus in the flue or triangle riser consist of.
8. the SCR denitrification apparatus of glass furnace fume according to claim 5, it is characterized in that: described catalyst bed has three layers, and 1 meter every layer is thick, and the interval is 1.5 meters between each layer.
9. the SCR denitrification apparatus of glass furnace fume according to claim 5 is characterized in that: the flue gas detecting system of with good grounds denitrating flue gas rate and tail gas amount of ammonia slip control ammonia spraying amount in the described SCR denitrification apparatus.
10. the SCR denitrification apparatus of glass furnace fume according to claim 5 is characterized in that: Benitration reactor and waste heat boiler junction are provided with door to be opened/closed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210536560XA CN103007743A (en) | 2012-12-13 | 2012-12-13 | SCR (Selective Catalytic Reduction) denitrification device for flue gas of glass kiln |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210536560XA CN103007743A (en) | 2012-12-13 | 2012-12-13 | SCR (Selective Catalytic Reduction) denitrification device for flue gas of glass kiln |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN103007743A true CN103007743A (en) | 2013-04-03 |
Family
ID=47957180
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201210536560XA Pending CN103007743A (en) | 2012-12-13 | 2012-12-13 | SCR (Selective Catalytic Reduction) denitrification device for flue gas of glass kiln |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN103007743A (en) |
Cited By (24)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103506005A (en) * | 2013-10-11 | 2014-01-15 | 东南大学 | SCR denitration device and denitration method applicable to middle and small-size boilers |
| CN103727803A (en) * | 2013-12-23 | 2014-04-16 | 天壕节能科技股份有限公司 | Flue gas denitrification device |
| CN103962006A (en) * | 2014-05-19 | 2014-08-06 | 国家电网公司 | Ammonia injection uniformity adjusting method for SCR (Selective Catalytic Reduction) flue gas denitration system |
| CN103962004A (en) * | 2014-05-06 | 2014-08-06 | 江苏淮河化工有限公司 | Treatment method for tail gas of aromatic compound nitration |
| CN104415660A (en) * | 2013-09-02 | 2015-03-18 | 北京美斯顿科技开发有限公司 | Novel flue gas denitrification device of CO waste heat boiler |
| CN104941423A (en) * | 2015-05-20 | 2015-09-30 | 江苏新世纪江南环保股份有限公司 | Ammonia desulfurization and denitrification dedusting method and device utilizing catalytic cracking regeneration flue gas |
| CN105327602A (en) * | 2015-09-29 | 2016-02-17 | 长兴旗滨玻璃有限公司 | Floating glass melting furnace flue gas waste heat utilization and denitration purification treatment device |
| CN105457687A (en) * | 2015-12-04 | 2016-04-06 | 盐城市兰丰环境工程科技有限公司 | On-line blockage cleaning method for SCR (selective catalytic reduction) denitration catalyst |
| CN105921012A (en) * | 2016-06-29 | 2016-09-07 | 平顶山市普恩科技有限公司 | Device and method for removing nitric oxides in adipic acid tail gas |
| CN106268318A (en) * | 2016-09-21 | 2017-01-04 | 海南中航特玻科技有限公司 | A kind of glass furnace fume integral denitration desulfurization dust-removing technique equipment and technique |
| CN106310933A (en) * | 2016-08-24 | 2017-01-11 | 中科科林（辽宁）能源环保有限公司 | Flue gas denitration system for coal water slurry boiler and method for denitrating flue gas |
| CN108339397A (en) * | 2018-04-13 | 2018-07-31 | 湖南安普诺环保科技有限公司 | A kind of industrial silicium mine heating furnace flue denitrating system |
| CN108499338A (en) * | 2018-04-04 | 2018-09-07 | 成都达奇环境科技有限公司 | A kind of denitrification apparatus |
| CN109663495A (en) * | 2017-10-16 | 2019-04-23 | 中国石油化工股份有限公司 | Coal-burning boiler SCR denitration process and its ammonia/air mixer |
| CN110160368A (en) * | 2019-06-17 | 2019-08-23 | 龙净科杰环保技术（上海）有限公司 | A kind of adjustable glass furnace residual neat recovering system |
| CN110192075A (en) * | 2016-12-22 | 2019-08-30 | 综合全球服务有限公司 | System and method for the catalyst sieve in scr reactor |
| CN110585900A (en) * | 2019-08-13 | 2019-12-20 | 中国平煤神马能源化工集团有限责任公司 | Coke oven flue gas denitration and waste heat utilization combined device and method for denitration by using same |
| CN111013343A (en) * | 2019-12-17 | 2020-04-17 | 无锡市华星东方电力环保科技有限公司 | Waste incineration system |
| CN111207600A (en) * | 2020-01-17 | 2020-05-29 | 深圳市凯盛科技工程有限公司 | Glass kiln flue gas waste heat utilization method |
| CN111514742A (en) * | 2020-03-26 | 2020-08-11 | 中材节能股份有限公司 | Boiler denitration integration system |
| CN112221345A (en) * | 2020-09-25 | 2021-01-15 | 华能国际电力股份有限公司上海石洞口第二电厂 | Automatic control method for boiler flue gas baffle of ultra-supercritical generator set |
| CN113680206A (en) * | 2021-08-19 | 2021-11-23 | 成都达奇环境科技有限公司 | Control method and system of catalytic denitration equipment |
| CN114288847A (en) * | 2021-12-24 | 2022-04-08 | 杭州新世纪能源环保工程股份有限公司 | SCR denitration device with uniform flue gas flow field flow velocity and ammonia concentration distribution |
| CN114797466A (en) * | 2022-03-25 | 2022-07-29 | 贵州西电电力股份有限公司黔北发电厂 | Thermal power plant flue gas denitration system and method for processing denitration catalyst without shutdown |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101898086A (en) * | 2010-06-25 | 2010-12-01 | 无锡迅德环保科技有限公司 | Power-generation and denitrification integrated device by residual heat of glass furnace and method thereof |
| CN201772471U (en) * | 2010-08-03 | 2011-03-23 | 曾永健 | Integration equipment of waste heat boiler and SCR (selective catalytic reduction) denitration device |
| CN102389838A (en) * | 2011-09-21 | 2012-03-28 | 西安交通大学 | Device for on-line cleaning of selective catalyctic reduction (SCR) denitration catalyst and cleaning process thereof |
| CN102735070A (en) * | 2012-07-07 | 2012-10-17 | 江苏中建材环保研究院有限公司 | Desulfurization and denitrification afterheat power generation systematization device of glass melter flue gas |
| CN203123794U (en) * | 2012-12-13 | 2013-08-14 | 成都东方凯特瑞环保催化剂有限责任公司 | SCR (selective catalytic reduction) denitration device for smoke gas of glass kiln |
-
2012
- 2012-12-13 CN CN201210536560XA patent/CN103007743A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101898086A (en) * | 2010-06-25 | 2010-12-01 | 无锡迅德环保科技有限公司 | Power-generation and denitrification integrated device by residual heat of glass furnace and method thereof |
| CN201772471U (en) * | 2010-08-03 | 2011-03-23 | 曾永健 | Integration equipment of waste heat boiler and SCR (selective catalytic reduction) denitration device |
| CN102389838A (en) * | 2011-09-21 | 2012-03-28 | 西安交通大学 | Device for on-line cleaning of selective catalyctic reduction (SCR) denitration catalyst and cleaning process thereof |
| CN102735070A (en) * | 2012-07-07 | 2012-10-17 | 江苏中建材环保研究院有限公司 | Desulfurization and denitrification afterheat power generation systematization device of glass melter flue gas |
| CN203123794U (en) * | 2012-12-13 | 2013-08-14 | 成都东方凯特瑞环保催化剂有限责任公司 | SCR (selective catalytic reduction) denitration device for smoke gas of glass kiln |
Cited By (34)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104415660A (en) * | 2013-09-02 | 2015-03-18 | 北京美斯顿科技开发有限公司 | Novel flue gas denitrification device of CO waste heat boiler |
| CN104415660B (en) * | 2013-09-02 | 2017-12-22 | 北京美斯顿科技开发有限公司 | A kind of equipment for denitrifying flue gas of CO waste heat boilers |
| CN103506005A (en) * | 2013-10-11 | 2014-01-15 | 东南大学 | SCR denitration device and denitration method applicable to middle and small-size boilers |
| CN103506005B (en) * | 2013-10-11 | 2015-04-15 | 东南大学 | SCR denitration device and denitration method applicable to middle and small-size boilers |
| CN103727803B (en) * | 2013-12-23 | 2015-12-02 | 天壕环境股份有限公司 | A kind of equipment for denitrifying flue gas |
| CN103727803A (en) * | 2013-12-23 | 2014-04-16 | 天壕节能科技股份有限公司 | Flue gas denitrification device |
| CN103962004A (en) * | 2014-05-06 | 2014-08-06 | 江苏淮河化工有限公司 | Treatment method for tail gas of aromatic compound nitration |
| CN103962006B (en) * | 2014-05-19 | 2016-07-13 | 国家电网公司 | A kind of spray ammonia uniformity adjusting method of SCR flue gas denitrification system |
| CN103962006A (en) * | 2014-05-19 | 2014-08-06 | 国家电网公司 | Ammonia injection uniformity adjusting method for SCR (Selective Catalytic Reduction) flue gas denitration system |
| CN104941423A (en) * | 2015-05-20 | 2015-09-30 | 江苏新世纪江南环保股份有限公司 | Ammonia desulfurization and denitrification dedusting method and device utilizing catalytic cracking regeneration flue gas |
| CN108176224A (en) * | 2015-05-20 | 2018-06-19 | 江苏新世纪江南环保股份有限公司 | A kind of regeneration fume from catalytic cracking ammonia process of desulfurization denitration dust collecting method and device |
| CN105327602A (en) * | 2015-09-29 | 2016-02-17 | 长兴旗滨玻璃有限公司 | Floating glass melting furnace flue gas waste heat utilization and denitration purification treatment device |
| CN105457687B (en) * | 2015-12-04 | 2018-08-14 | 盐城市兰丰环境工程科技有限公司 | A kind of method of the online block clearing of SCR denitration |
| CN105457687A (en) * | 2015-12-04 | 2016-04-06 | 盐城市兰丰环境工程科技有限公司 | On-line blockage cleaning method for SCR (selective catalytic reduction) denitration catalyst |
| CN105921012A (en) * | 2016-06-29 | 2016-09-07 | 平顶山市普恩科技有限公司 | Device and method for removing nitric oxides in adipic acid tail gas |
| CN105921012B (en) * | 2016-06-29 | 2018-08-28 | 平顶山市普恩科技有限公司 | Adipic acid nitrogen oxide in tail gas removing means and its method |
| CN106310933A (en) * | 2016-08-24 | 2017-01-11 | 中科科林（辽宁）能源环保有限公司 | Flue gas denitration system for coal water slurry boiler and method for denitrating flue gas |
| CN106268318A (en) * | 2016-09-21 | 2017-01-04 | 海南中航特玻科技有限公司 | A kind of glass furnace fume integral denitration desulfurization dust-removing technique equipment and technique |
| CN110192075A (en) * | 2016-12-22 | 2019-08-30 | 综合全球服务有限公司 | System and method for the catalyst sieve in scr reactor |
| CN110192075B (en) * | 2016-12-22 | 2021-05-07 | 综合全球服务有限公司 | System and method for catalyst screens in selective catalytic reduction reactors |
| CN109663495A (en) * | 2017-10-16 | 2019-04-23 | 中国石油化工股份有限公司 | Coal-burning boiler SCR denitration process and its ammonia/air mixer |
| CN108499338A (en) * | 2018-04-04 | 2018-09-07 | 成都达奇环境科技有限公司 | A kind of denitrification apparatus |
| CN108339397A (en) * | 2018-04-13 | 2018-07-31 | 湖南安普诺环保科技有限公司 | A kind of industrial silicium mine heating furnace flue denitrating system |
| CN110160368A (en) * | 2019-06-17 | 2019-08-23 | 龙净科杰环保技术（上海）有限公司 | A kind of adjustable glass furnace residual neat recovering system |
| CN110585900A (en) * | 2019-08-13 | 2019-12-20 | 中国平煤神马能源化工集团有限责任公司 | Coke oven flue gas denitration and waste heat utilization combined device and method for denitration by using same |
| CN111013343A (en) * | 2019-12-17 | 2020-04-17 | 无锡市华星东方电力环保科技有限公司 | Waste incineration system |
| CN111207600A (en) * | 2020-01-17 | 2020-05-29 | 深圳市凯盛科技工程有限公司 | Glass kiln flue gas waste heat utilization method |
| CN111514742A (en) * | 2020-03-26 | 2020-08-11 | 中材节能股份有限公司 | Boiler denitration integration system |
| CN112221345A (en) * | 2020-09-25 | 2021-01-15 | 华能国际电力股份有限公司上海石洞口第二电厂 | Automatic control method for boiler flue gas baffle of ultra-supercritical generator set |
| CN112221345B (en) * | 2020-09-25 | 2021-11-30 | 华能国际电力股份有限公司上海石洞口第二电厂 | Automatic control method for boiler flue gas baffle of ultra-supercritical generator set |
| CN113680206A (en) * | 2021-08-19 | 2021-11-23 | 成都达奇环境科技有限公司 | Control method and system of catalytic denitration equipment |
| CN114288847A (en) * | 2021-12-24 | 2022-04-08 | 杭州新世纪能源环保工程股份有限公司 | SCR denitration device with uniform flue gas flow field flow velocity and ammonia concentration distribution |
| CN114288847B (en) * | 2021-12-24 | 2022-09-02 | 杭州新世纪能源环保工程股份有限公司 | SCR denitration device with uniform flue gas flow field flow velocity and ammonia concentration distribution |
| CN114797466A (en) * | 2022-03-25 | 2022-07-29 | 贵州西电电力股份有限公司黔北发电厂 | Thermal power plant flue gas denitration system and method for processing denitration catalyst without shutdown |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN103007743A (en) | SCR (Selective Catalytic Reduction) denitrification device for flue gas of glass kiln | |
| CN203123794U (en) | SCR (selective catalytic reduction) denitration device for smoke gas of glass kiln | |
| CN205598926U (en) | Circulating fluidized bed boiler flue gas SNCR and SCR coupling denitrification facility | |
| CN205392185U (en) | Gas boiler catalytic denitrification system | |
| CN103691293A (en) | Novel SNCR (selective non-catalytic reduction) and SCR (selective catalytic reduction) hybrid denitrification system | |
| CN102179171B (en) | Multi-stage themolysis coupled denitration method using front flow field uniformizing device and device thereof | |
| CN104190253A (en) | Coke oven flue gas SCR denitration system | |
| CN204134478U (en) | Switch protecting type boiler smoke SCR denitration system | |
| CN105169917A (en) | SNCR-SCR combined denitration system and method based on ammonia nitrogen molar ratio detection and regulation | |
| CN104548931A (en) | Device for producing ammonia gas through pyrolysis of urea by using high-temperature flue gas as heat source | |
| CN102806003A (en) | SNCR (selective non-catalytic reduction) denitration device and method for rotary cement kiln | |
| CN111821852A (en) | Device and process for jointly removing carbon monoxide and nitrogen oxides in sintering flue gas | |
| CN207680368U (en) | A kind of equipment for denitrifying flue gas based on temperature-compensating | |
| CN107008144B (en) | Device for realizing SCR flue gas denitration multistage ammonia spraying and flue gas denitration method | |
| CN214389610U (en) | Low-temperature SCR (selective catalytic reduction) removal device for flue gas of sleeve lime kiln | |
| CN212523654U (en) | System for be used for independent heat source grinding system tail gas denitration | |
| CN211799959U (en) | Ammonia SNCR (Selective non catalytic reduction) denitration system for tower boiler | |
| CN106310933A (en) | Flue gas denitration system for coal water slurry boiler and method for denitrating flue gas | |
| CN219646952U (en) | Adiabatic cyclone dust collector and flue gas treatment facility | |
| CN211328899U (en) | Be applied to denitrification facility of kiln | |
| CN107166376A (en) | Fluidized-bed combustion boiler denitrification apparatus and method of denitration based on cyclone separator | |
| CN204637957U (en) | A kind of equipment for denitrifying flue gas | |
| CN207680333U (en) | Urea direct-injection SNCR+SCR flue gas denitrification systems | |
| CN212758047U (en) | Flue gas denitration system of air gas preheating steel rolling heating furnace | |
| CN204996327U (en) | SNCR -SCR unites deNOx systems based on ammonia nitrogen mol ratio detects and regulation and control |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C12 | Rejection of a patent application after its publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20130403 |