CN101721904A - Composite denitration method by biomass direct reburning and selective non-catalytic reduction - Google Patents
Composite denitration method by biomass direct reburning and selective non-catalytic reduction Download PDFInfo
- Publication number
- CN101721904A CN101721904A CN201010011643A CN201010011643A CN101721904A CN 101721904 A CN101721904 A CN 101721904A CN 201010011643 A CN201010011643 A CN 201010011643A CN 201010011643 A CN201010011643 A CN 201010011643A CN 101721904 A CN101721904 A CN 101721904A
- Authority
- CN
- China
- Prior art keywords
- zone
- living beings
- sncr
- flue gas
- denitration method
- 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 belongs to the technical fields of low NOx burning and fume denitration of pulverized coal furnaces. The invention has the technical scheme that the pulverized coal is delivered into a main burning area from a burner of the pulverized coal furnace to form fume containing NOx; biomass particles, primary wind and recirculation fume are mixed and sprayed into a reburning reducing area, and part of NOx formed in the main burning area reacts to generate N2; the burn-off wind is sprayed from the upper part of the reburning reducing area; the circulation fume and compressed air mixing gas is used as an atomizing medium of an amino reducer and additive mixing solution; the atomizing medium of the amino reducer and additive mixing solution is sprayed into the burn-off area and a downstream horizontal fume passage by spray nozzles which are arranged in a hearth and the horizontal fume passage, and NOx in the fume reacts to form N2. The method enhances the denitration efficiency, improves the utilization rate of the biomass and the amino reducer, and reduces the generation and emission of secondary contaminants.
Description
Technical field
The present invention relates to recombustion of biomass denitration and selective non-catalytic denitrating technique, belong to coal-powder boiler low NOx combustion and gas denitrifying technology field.
Background technology
The nitrogen oxide of pulverized-coal fired boiler discharging is one of main matter that causes air environmental pollution, and existing low-NOx combustor technology, air classification combustion technology, the coal dust denitration efficiency of low NOx combusting technology such as combustion technology more generally are lower than 50%.Microfine coal fires again in the denitration by refueling technology has strict requirement to coal and microfine coal preparation, and natural gas reburning operating cost is higher, and the scope that the recombustion of biomass denitration technology depends on the biomass fuel supply influences its economy and efficient with transporting.Selective non-catalytic denitration (SNCR) is owing to the discharging of secondary pollutions such as narrower reaction temperature window, the escaping of ammonia is restricted application, temperature is higher than 1100 ℃, the easy oxidized generation NOx of amino reductive, amino reductive and NOx reaction rate reduced when temperature was lower than 900 ℃, easily cause the escaping of ammonia, thereby be limited corresponding to 900 ℃～1100 ℃ the upper furnace and the space of horizontal flue, amino reductive and flue gas mixed process need the long time in addition, have limited the efficient of SNCR denitration reaction.Under the experiment condition that good mixing and temperature suit, the SNCR denitration efficiency reaches 80%～90%, and denitration efficiency is generally 30%～50% in the application of SNCR engineering.Granted publication number discloses " a kind of method that promotes selective non-catalytic reduction of nitrogen oxides " for the patent of invention of CN101244361A, proposition with microfine coal, natural gas or synthesis gas as the SNCR additive, the denitration efficiency when improving SNCR and being reflected at low temperature.The patent of invention of Granted publication CN101433799A discloses " selective non-catalytic reduction method of gasifying and atomizing biomass and the boiler of use ", and biomass gasified gas is mixed materialization medium as amino reductive solution as additive with air.Two above-mentioned methods reduce the denitration reaction temperature window to some extent, but the burnout rate that adds microfine coal under SNCR reaction temperature level is difficult to guarantee, it is comparatively complicated to add natural gas, synthesis gas or biomass gasified gas device technique, and above method all is difficult to amount of ammonia slip is reduced to more low-level, generally at 5ppm～15ppm.
Summary of the invention
The purpose of this invention is to provide the directly combustion and SNCR composite denitration method again of a kind of living beings, the direct denitration by refueling efficient of these method solution living beings is on the low side, selective non-catalytic denitration reaction temperature window is narrow, denitration efficiency low and higher problems such as the escaping of ammonia.
Living beings are combustion and SNCR composite denitration method more directly, and coal dust enters the formation of coal-powder boiler burner hearth bottom primary zone by the coal-powder boiler burner and contains NO
xFlue gas, the mixture of the tail flue gas of wind and recirculation sprays into the burner hearth middle part with biological particles, forms and fires the reducing zone again, the part NO that the primary zone is produced
xBe reduced into N
2Spray into after-flame wind formation burning-out zone from firing top, reducing zone again, it is characterized in that: adopt circulating flue gas and fuel-air mixture compression atomizing medium as amino reductive and additive mixed solution, by nozzle amino reductive and the atomizing of additive mixed solution are injected in after-flame zone and the downstream horizontal flue, make NO in the flue gas
xReaction forms N
2
In the technique scheme of the present invention, the primary zone excess air coefficient is 0.8～1.0, fires reducing zone excess air coefficient 0.8～0.9 again; Burning-out zone excess air coefficient 1.15～1.2.The caloric value of primary zone input coal accounts for boiler oil and always imports 80%～90% of heat, and the caloric value that living beings are dropped in the reburning zone accounts for 10%～20%.Living beings spray into that to fire the reducing zone temperature again be 1100 ℃～1400 ℃, 1100 ℃～1200 ℃ of after-flame wind entrance temperature.Amino reductive and additive mixed solution spray into burning-out zone and downstream horizontal flue through a plurality of spray nozzle device atomizings, 800 ℃～1100 ℃ of the temperature ranges of burning-out zone and downstream horizontal flue, and the straying quatity of amino reductive is with NH in the reducing agent
iWith NO in the flue gas
xMol ratio represent that its mol ratio is 1.0～2.0.Additive is that sodium salt and ethanol mol ratio are 1 mixture, NO in the sodium salt that sprays into, ethanol and the flue gas
xMol ratio be 1/20～1/3.Sodium salt is a kind of of sodium carbonate, sodium formate and sodium acetate.
Adopting living beings directly to fire with the SNCR composite denitration method has the following advantages again:
Adopt flue gas recycled and Air mixing gas atomizing medium as amino reductive and additive mixed solution, help avoiding SNCR conversion zone oxygen concentration too high and reduce denitration efficiency, simultaneously can strengthen the dispersed jet rigidity, reinforcement amino reductive, additive mix with flue gas, guarantee amino reductive and NO
xReduction reaction, reduce the possibility of the escaping of ammonia; The sodium salt of living beings ash neutral and alkali material and interpolation can be widened the SNCR temperature window, promotes amino reductive and NO
xReaction, and can suppress the escaping of ammonia, CO and N
2The O secondary pollution generates and discharging.Ethanol can be widened the SNCR temperature window to the low temperature direction as additive; Solve denitration by refueling and SNCR technology denitration efficiency defective on the low side separately, denitration efficiency can reach more than 80%.The sodium salt and the ethanol additive that adopt are cheap and easy to get, and easily are dissolved in amino reductive solution, and adding method is simple, are convenient to implement.
Description of drawings
Fig. 1 is directly combustions and SNCR composite denitration method schematic flow sheet again of living beings of the present invention;
Wherein, 1 is amino reductive and additive mixed solution, and 2 is compressed air, 3 are the supercharging flue gas recycled, 4 is gas mixing device, and 5 is atomizing medium, and 6 is main burner, 7 is a wind mixed coal powder, 8 is recombustion burner, and 9 is wind and flue gas recycled mixing biomass fuel, and 10 is the after-flame wind snout, 11 is after-flame wind, 12 is the primary zone, and 13 for firing the reducing zone again, and 14 is burning-out zone, 15 is atomizer, 16 is preceding screen superheater, and 17 is back screen superheater, and 18 is reheater, 19 is low temperature superheater, and 20 is horizontal flue.
Fig. 2 is sodium carbonate and the ethanol simulation curve that influences to the denitration of ammine selective on-catalytic.
Fig. 3 is sodium carbonate and the ethanol simulation curve that influences to the denitration of urea selective on-catalytic.
Fig. 4 is the sodium carbonate of different additions and the influence curve that ethanol generates CO in ammonia and the urea selective on-catalytic denitrification process.
Fig. 5 is that sodium carbonate is to urea selective on-catalytic denitration N
2The influence curve that O generates.
The specific embodiment
The present invention will be described below in conjunction with accompanying drawing:
Fig. 1 is technological process of the present invention, and concrete steps are:
A, a wind mixed coal powder 7 enter 12 formation of burner hearth bottom primary zone through main burner 6 and contain NO
xFlue gas.
B, wind and flue gas recycled mixing biomass fuel 9 enter burner hearth through recombustion burner 8, form to fire reducing zone 13 again.Biological particles is separated out gas phase hydrocarbon-based, amino isoreactivity group firing under the low stoichiometric ratio conditions in reducing zone 13 again, the NO that forms with primary zone 12
xReaction forms N
2, while biomass coke and NO
xFiring reducing zone 13 generation out-phase reduction reactions again, with the NO of primary zone 12 generations
xBe reduced into N
2
C, spray into after-flame wind 11, form burning-out zone 14, make imperfect combustion combustible completing combustion from the after-flame wind snout 10 that fires 13 tops, reducing zone again.
D, compressed air 2 enter gas mixing device 4 with supercharging flue gas recycled 3, form atomizing medium 5.Atomizing medium 5 a plurality of atomizers 15 of flowing through spray into burning-out zone 14 and horizontal flue 20 with 1 atomizing of amino reductive and additive mixed solution.Atomizer 15 is arranged in burning-out zone 14, and the zone between the preceding screen superheater 16, back screen superheater 17, reheater 18, low temperature superheater 19.
At the primary zone excess air coefficient described in the steps A is 0.8～2.0, and coal dust accounts for 80%～90% of the total fuel input of burner hearth heat.
The ratio that flue gas recycled in wind described in the step B and flue gas recycled mixing biomass fuel 9 accounts for gaseous mixture is 30%～100%.Again combustion than be biomass fuel account for the input of the total fuel of burner hearth hot 10%～20%.Firing reducing zone 13 excess air coefficients again is 0.8～0.9.Wind and flue gas recycled gaseous mixture spray into living beings and fire reducing zone 13 again, help guaranteeing firing the rigidity and and the mixing of flue gas of required low stoichiometric ratio condition and enhanced biological matter fuel jet so again.
At burning-out zone 14 excess air coefficients described in the step C is 1.15～1.2.
In step D, the flue-gas temperature scope is 800 ℃～1100 ℃ in the atomizer 15 corresponding burner hearths that burning-out zone 14 and horizontal flue 20 are arranged.Amino reductive solution spray into the NH that total amount produces with reducing agent
iBefore spraying into reducing agent is NO in burning-out zone 14 flue gases
xMol ratio represent NH
iWith NO in the flue gas
xMol ratio is 1.0～2.0.Amino reductive solution is a kind of of ammoniacal liquor, urea liquid, ammonium bicarbonate soln.Additive is that sodium salt and ethanol mol ratio are 1 mixture, NO in sodium salt that sprays into and ethanol and the flue gas
xMol ratio is 1/20～1/3.Sodium salt is a kind of of sodium carbonate, sodium formate and sodium acetate.To account for the ratio of atomizing medium be 30%～100% to flue gas recycled in the atomizing medium 5, helps guaranteeing amino reductive and the dispersed jet rigidity of additive mixed solution 1 and mixing of flue gas like this.
Fig. 2 is sodium carbonate, the ethanol influence curve to the denitration of ammine selective on-catalytic.Experiment condition is: the initial NO of flue gas
xConcentration 600ppm, oxygen concentration 3%, the ammonia nitrogen mol ratio is 1.5, sodium carbonate, ethanol and NO
xMol ratio is 1/3.Sodium carbonate and ethanol can be widened 50 ℃～100 ℃ of temperature windows to the low temperature direction, widen 20 ℃ to the high temperature direction, and sodium carbonate can improve the denitration efficiency under each reaction temperature.
Fig. 3 is sodium carbonate and the ethanol simulation curve that influences to the denitration of urea selective on-catalytic.Experiment condition is: the initial NO of flue gas
xConcentration 600ppm, oxygen concentration 3%, the ammonia nitrogen mol ratio is 1.5, sodium carbonate, ethanol and NO
xMol ratio is 1/3.Sodium carbonate and ethanol can be widened about 50 ℃ of temperature windows to the low temperature direction, and sodium carbonate can improve the denitration efficiency under the temperature window.
Fig. 4 is the sodium carbonate of different additions and the influence curve that ethanol generates CO in ammonia and the urea selective on-catalytic denitrification process.Experiment condition is: the initial NO of flue gas
xConcentration 600ppm, oxygen concentration 3%, the ammonia nitrogen mol ratio is 1.5, reaction temperature 1223K.Increase with the sodium carbonate addition, the CO discharge capacity reduces, and increases with the ethanol addition, and the CO discharge capacity increases.
Fig. 5 is that sodium carbonate is to urea selective on-catalytic denitration N
2The influence curve that O generates.Experiment condition is: the initial NO of flue gas
xConcentration 500ppm, oxygen concentration 3.9%, amino reductive are urea, and the ammonia nitrogen mol ratio is 1.5, and additive is a sodium carbonate, sodium carbonate and NO
xMol ratio is 6%.Experiment shows all that with simulation sodium carbonate can obviously reduce N
2The O growing amount.
By adjusting recombustion of biomass ratio, NH
iWith NO in the flue gas
xNO in mol ratio, additive and the flue gas
xMol ratio, the denitration efficiency of this method can reach 80%～92%.The escaping of ammonia is reduced to below the 5ppm, does not have tangible CO and N
2O generates and discharging.
Claims (7)
1. directly combustion and SNCR composite denitration method again of living beings, coal dust enters the formation of coal-powder boiler burner hearth bottom primary zone by the coal-powder boiler burner and contains NO
xFlue gas, the mixing biomass particle of the tail flue gas of wind and recirculation spray into the burner hearth middle part, form and fire the reducing zone again, the part NO that the primary zone is produced
xBe reduced into N
2Spray into after-flame wind formation burning-out zone from firing top, reducing zone again, it is characterized in that, adopt circulating flue gas and fuel-air mixture compression as atomizing medium, with sodium salt and alcohol mixture as additive, by nozzle amino reductive and the atomizing of additive mixed solution are sprayed in after-flame zone and the downstream horizontal flue, make NO in the flue gas
xReaction forms N
2
2. living beings according to claim 1 are combustion and SNCR composite denitration method more directly, it is characterized in that the primary zone excess air coefficient is 0.8～1.0, fires reducing zone excess air coefficient 0.8～0.9 again; Burning-out zone excess air coefficient 1.15～1.2.
3. according to claim 1 and the directly combustion and SNCR composite denitration method again of 2 described living beings, it is characterized in that coal-powder boiler burner hearth primary zone drops into the caloric value of coal and account for boiler oil and always import 80%～90% of heat, the caloric value that living beings are dropped in the reburning zone accounts for 10%～20%.
4. according to the directly combustion and SNCR composite denitration method again of claim 1,2 and 3 described living beings, it is characterized in that living beings spray into that to fire the reducing zone temperature again be 1100 ℃～1400 ℃, 1100 ℃～1200 ℃ of after-flame wind entrance temperature.
5. living beings according to claim 1 are combustion and SNCR composite denitration method more directly, it is characterized in that amino reductive and additive mixed solution spray into burning-out zone and downstream horizontal flue through the atomizing of a plurality of positions, 800 ℃～1100 ℃ of the temperature ranges of burning-out zone and downstream horizontal flue, the straying quatity of amino reductive is with NH in the reducing agent
iWith NO in the flue gas
xMol ratio represent that its ratio is 1.0～2.0.
6. according to claim 1 and the directly combustion and SNCR composite denitration method again of 5 described living beings, it is characterized in that additive is that sodium salt and ethanol mol ratio are 1 mixture, NO in the sodium salt that sprays into, ethanol and the flue gas
xMol ratio be 1/20～1/3.
7. according to claim 1 and the directly combustion and SNCR composite denitration method again of 6 described living beings, it is characterized in that: sodium salt is a kind of of sodium carbonate, sodium formate and sodium acetate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201010011643A CN101721904A (en) | 2010-01-21 | 2010-01-21 | Composite denitration method by biomass direct reburning and selective non-catalytic reduction |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201010011643A CN101721904A (en) | 2010-01-21 | 2010-01-21 | Composite denitration method by biomass direct reburning and selective non-catalytic reduction |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN101721904A true CN101721904A (en) | 2010-06-09 |
Family
ID=42443816
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201010011643A Pending CN101721904A (en) | 2010-01-21 | 2010-01-21 | Composite denitration method by biomass direct reburning and selective non-catalytic reduction |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN101721904A (en) |
Cited By (20)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102588955A (en) * | 2011-10-06 | 2012-07-18 | 无锡荣成纸业有限公司 | Combustion system for reducing nitrogen oxide emission |
| CN102626589A (en) * | 2012-04-19 | 2012-08-08 | 东方电气集团东方锅炉股份有限公司 | SNCR (Selective Non Catalytic Reduction) denitrification gun spraying system of large boiler and use method thereof |
| CN102824842A (en) * | 2012-09-06 | 2012-12-19 | 浙江百能科技有限公司 | Flue gas de-nitrification method for integrally spraying selective non-catalytic reduction agent and additive |
| CN103148476A (en) * | 2013-03-11 | 2013-06-12 | 西安交通大学 | Flue gas recirculation boiler system burning fuel with high sodium and potassium contents |
| CN103289775A (en) * | 2013-06-28 | 2013-09-11 | 广西大学 | Fuel composition for re-combustion denitration in coal-fired boiler in cane sugar factory |
| CN104587825A (en) * | 2015-01-12 | 2015-05-06 | 国家电网公司 | Novel method for SCR and lime/gypsum wet desulfurization combined operation |
| CN105485664A (en) * | 2015-12-07 | 2016-04-13 | 山西大学 | Composite denitration method and device |
| CN105937758A (en) * | 2016-06-14 | 2016-09-14 | 廖洁芬 | Biomass direct-fired fire grate boiler |
| CN107213771A (en) * | 2017-07-14 | 2017-09-29 | 光大环境科技（中国）有限公司 | The biomass direct-fired device that flue gas recirculation and SNCR are combined |
| CN108905590A (en) * | 2018-08-13 | 2018-11-30 | 中国华能集团有限公司 | A kind of denitrating system and method for station boiler low NO collaboration high temperature spray ammonia |
| CN109869712A (en) * | 2019-02-28 | 2019-06-11 | 兖矿集团有限公司 | A kind of modified coal fires the system and its processing method of desulphurization denitration again |
| CN110540887A (en) * | 2019-09-02 | 2019-12-06 | 山西大学 | preparation method and application of nitridized biomass advanced reburning denitration agent |
| CN111715050A (en) * | 2019-03-20 | 2020-09-29 | 中国科学院大连化学物理研究所 | Method for improving urea denitration efficiency by adopting alkaline alcohol solution |
| CN112628739A (en) * | 2020-12-16 | 2021-04-09 | 苏州乔发环保科技股份有限公司 | Garbage fly ash carbonization furnace |
| CN112827335A (en) * | 2020-12-22 | 2021-05-25 | 四川天采科技有限责任公司 | Low NOXNatural gas hydrogen production process with flue gas emission |
| CN113048467A (en) * | 2020-12-10 | 2021-06-29 | 哈尔滨博深科技发展有限公司 | Coal-fired boiler with reduced nitrogen oxide injection apparatus |
| CN113385013A (en) * | 2021-06-28 | 2021-09-14 | 北京工业大学 | Method for flue gas denitration by using gaseous organic matter as SNCR additive |
| CN113877409A (en) * | 2020-07-01 | 2022-01-04 | 中冶长天国际工程有限责任公司 | High-temperature flue gas treatment system and method for grate-kiln oxidized pellets |
| CN113877391A (en) * | 2020-07-01 | 2022-01-04 | 中冶长天国际工程有限责任公司 | Composite additive for selective non-catalytic reduction denitration of flue gas and preparation method and application thereof |
| CN113916010A (en) * | 2020-07-10 | 2022-01-11 | 中冶长天国际工程有限责任公司 | Rotary kiln-chain grate machine flue gas treatment process and system for flue gas treatment |
-
2010
- 2010-01-21 CN CN201010011643A patent/CN101721904A/en active Pending
Cited By (29)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102588955A (en) * | 2011-10-06 | 2012-07-18 | 无锡荣成纸业有限公司 | Combustion system for reducing nitrogen oxide emission |
| CN102588955B (en) * | 2011-10-06 | 2016-05-04 | 无锡荣成纸业有限公司 | Combustion system for reducing nitrogen oxide emission |
| CN102626589B (en) * | 2012-04-19 | 2015-01-07 | 东方电气集团东方锅炉股份有限公司 | SNCR (Selective Non Catalytic Reduction) denitrification gun spraying system of large boiler and use method thereof |
| CN102626589A (en) * | 2012-04-19 | 2012-08-08 | 东方电气集团东方锅炉股份有限公司 | SNCR (Selective Non Catalytic Reduction) denitrification gun spraying system of large boiler and use method thereof |
| CN102824842A (en) * | 2012-09-06 | 2012-12-19 | 浙江百能科技有限公司 | Flue gas de-nitrification method for integrally spraying selective non-catalytic reduction agent and additive |
| CN103148476A (en) * | 2013-03-11 | 2013-06-12 | 西安交通大学 | Flue gas recirculation boiler system burning fuel with high sodium and potassium contents |
| CN103148476B (en) * | 2013-03-11 | 2016-01-20 | 西安交通大学 | A kind of flue gas recirculation steam generator system using high sodium potassium content fuel |
| CN103289775A (en) * | 2013-06-28 | 2013-09-11 | 广西大学 | Fuel composition for re-combustion denitration in coal-fired boiler in cane sugar factory |
| CN104587825A (en) * | 2015-01-12 | 2015-05-06 | 国家电网公司 | Novel method for SCR and lime/gypsum wet desulfurization combined operation |
| CN105485664A (en) * | 2015-12-07 | 2016-04-13 | 山西大学 | Composite denitration method and device |
| CN105485664B (en) * | 2015-12-07 | 2018-04-24 | 山西大学 | A kind of method and device of composite denitration |
| CN105937758A (en) * | 2016-06-14 | 2016-09-14 | 廖洁芬 | Biomass direct-fired fire grate boiler |
| CN107213771A (en) * | 2017-07-14 | 2017-09-29 | 光大环境科技（中国）有限公司 | The biomass direct-fired device that flue gas recirculation and SNCR are combined |
| CN108905590A (en) * | 2018-08-13 | 2018-11-30 | 中国华能集团有限公司 | A kind of denitrating system and method for station boiler low NO collaboration high temperature spray ammonia |
| CN108905590B (en) * | 2018-08-13 | 2023-05-12 | 中国华能集团有限公司 | Denitration system and method for low-nitrogen burner of power station boiler in cooperation with high-temperature ammonia injection |
| CN109869712A (en) * | 2019-02-28 | 2019-06-11 | 兖矿集团有限公司 | A kind of modified coal fires the system and its processing method of desulphurization denitration again |
| CN111715050B (en) * | 2019-03-20 | 2021-10-15 | 中国科学院大连化学物理研究所 | Method for improving urea denitration efficiency by adopting alkaline alcohol solution |
| CN111715050A (en) * | 2019-03-20 | 2020-09-29 | 中国科学院大连化学物理研究所 | Method for improving urea denitration efficiency by adopting alkaline alcohol solution |
| CN110540887A (en) * | 2019-09-02 | 2019-12-06 | 山西大学 | preparation method and application of nitridized biomass advanced reburning denitration agent |
| CN113877409A (en) * | 2020-07-01 | 2022-01-04 | 中冶长天国际工程有限责任公司 | High-temperature flue gas treatment system and method for grate-kiln oxidized pellets |
| CN113877391A (en) * | 2020-07-01 | 2022-01-04 | 中冶长天国际工程有限责任公司 | Composite additive for selective non-catalytic reduction denitration of flue gas and preparation method and application thereof |
| CN113877409B (en) * | 2020-07-01 | 2023-06-23 | 中冶长天国际工程有限责任公司 | High-temperature flue gas treatment system and method for oxidized pellets of grate-rotary kiln |
| CN113877391B (en) * | 2020-07-01 | 2023-12-29 | 中冶长天国际工程有限责任公司 | Composite additive for selective non-catalytic reduction denitration of flue gas, preparation method and application thereof |
| CN113916010A (en) * | 2020-07-10 | 2022-01-11 | 中冶长天国际工程有限责任公司 | Rotary kiln-chain grate machine flue gas treatment process and system for flue gas treatment |
| CN113916010B (en) * | 2020-07-10 | 2023-11-10 | 中冶长天国际工程有限责任公司 | Rotary kiln-grate machine flue gas treatment process and system for flue gas treatment |
| CN113048467A (en) * | 2020-12-10 | 2021-06-29 | 哈尔滨博深科技发展有限公司 | Coal-fired boiler with reduced nitrogen oxide injection apparatus |
| CN112628739A (en) * | 2020-12-16 | 2021-04-09 | 苏州乔发环保科技股份有限公司 | Garbage fly ash carbonization furnace |
| CN112827335A (en) * | 2020-12-22 | 2021-05-25 | 四川天采科技有限责任公司 | Low NOXNatural gas hydrogen production process with flue gas emission |
| CN113385013A (en) * | 2021-06-28 | 2021-09-14 | 北京工业大学 | Method for flue gas denitration by using gaseous organic matter as SNCR additive |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN101721904A (en) | Composite denitration method by biomass direct reburning and selective non-catalytic reduction | |
| CN101244361B (en) | Method for accelerating selective non-catalytic reduction of nitrogen oxides | |
| CN100464122C (en) | Method of decreasing release of nitrogen oxide in the pulverized-coal fired boiler and its used boiler | |
| CN100491822C (en) | Method of denitration utilizing biomass direct burning and smoke gas recirculating technology | |
| CN105485664B (en) | A kind of method and device of composite denitration | |
| CN101050853B (en) | Method for reducing nitrogen oxide of powder coal boiler mixed burning gas fuel | |
| US6357367B1 (en) | Method for NOx reduction by upper furnace injection of biofuel water slurry | |
| US5746144A (en) | Method and apparatus for nox reduction by upper furnace injection of coal water slurry | |
| CN102966945B (en) | Reduce the method for biomass recirculating fluidized bed boiler discharged nitrous oxides | |
| CN101482262B (en) | Lignite boiler combustion method capable of reducing nitrogen oxide emission | |
| CN204388042U (en) | Low nox combustion system | |
| CN101773781B (en) | Method for realizing SNCR and SCR combined denitration by using coal-fired boiler | |
| CN108905590B (en) | Denitration system and method for low-nitrogen burner of power station boiler in cooperation with high-temperature ammonia injection | |
| CN102506418A (en) | Low emission high efficiency grate-firing combustion device and method | |
| CN105805729B (en) | Low nox combustion method and low nox combustion system | |
| CN202884903U (en) | Biomass circulating fluidized bed combustion equipment with low nitrogen oxide emission | |
| CN206112904U (en) | Biomass boiler low -nitrogen combustion system | |
| CN111140865A (en) | Composite reduction type low NOx emission device suitable for power station boiler | |
| CN111457415A (en) | Pulverized coal partial gasification and denitration system and method | |
| CN102980174B (en) | A kind of coal burning and gas burning combined high-efficiency low emission grate-firing combustion device and technique | |
| CN202303346U (en) | Low-discharging high-efficient layer combustion combustor | |
| CN1817415A (en) | Denitration of non-selective catalytic reducing smoke | |
| CN208878272U (en) | A kind of denitrating system of station boiler low NO collaboration high temperature spray ammonia | |
| CN204717670U (en) | A kind of 300MW generating set boiler staged combustion systems | |
| CN204328994U (en) | Biomass boiler equipment for denitrifying flue gas |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Open date: 20100609 |