CN101433800A - Selective non-catalytic reduction method with added gasified biomass gas and used boiler - Google Patents
Selective non-catalytic reduction method with added gasified biomass gas and used boiler Download PDFInfo
- Publication number
- CN101433800A CN101433800A CNA200810209608XA CN200810209608A CN101433800A CN 101433800 A CN101433800 A CN 101433800A CN A200810209608X A CNA200810209608X A CN A200810209608XA CN 200810209608 A CN200810209608 A CN 200810209608A CN 101433800 A CN101433800 A CN 101433800A
- Authority
- CN
- China
- Prior art keywords
- gas
- flue
- biomass
- biomass gasified
- spray
- 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
Landscapes
- Treating Waste Gases (AREA)
- Exhaust Gas Treatment By Means Of Catalyst (AREA)
Abstract
The invention relates to a selective non-catalytic reduction method with the addition of biomass gasified gas and a boiler used by the same, which relate to the selective non-catalytic reduction method and the boiler used by the same. The invention solves the problems that the prior selective non-catalytic reduction method has narrow temperature window, low denitration efficiency at a low temperature region and single effective component in synthesis gas of a reaction additive. A plurality of spraying ends of a plurality of gas additive spraying devices of the boiler pass through the lateral wall of a horizontal flue and are arranged in the horizontal flue. The selective non-catalytic reduction method pressurizes the biomass gasified gas generated by a biomass gasifier, sprays the pressurized gas into a furnace chamber and a horizontal flue in a region with a temperature of between 800 and 950 DGE C through a biomass gasified gas spaying device, wherein the mol ratio of the total spraying amount of the biomass gasified gas to NOx in the flue gas before the biomass gasified gas is sprayed is between 0.3 and 1.2. The selective non-catalytic reduction method makes use of biomass resources to improve the denitration efficiency and enlarges the temperature window. The boiler system of the invention is simple and has high reliability.
Description
Technical field
The present invention relates to the boiler of a kind of selective non-catalytic reduction method and use.
Background technology
Nitrogen oxide (NOx) is one of main atmosphere pollution of discharged from coal-fired boiler, except forming acid rain, destroys ecological environment, can also form photochemical fog, directly harm humans health.Playing country on July 1st, 2004 directly charges to the unit that discharges pollutants for 0.6 yuan by each pollutional equivalent (the blowdown equivalent of nitrogen oxide is 0.95 kilogram) to nitrogen oxide.The control coal-fired boiler NOx discharge is extremely urgent.Control NO at present
XThe measure of discharging roughly is divided into two classes, and a class is low NO
XCombustion technology mainly comprises low excess air operation technology, flue gas recirculating technique, dense-dilute burner combustion technology and reburning technology etc.The cost of combustion technology is at low NO again
XBe the highest in the combustion technology, it is also maximum that it reduces the NOx amplitude, can reach 50%, and other low NOx combusting technology generally has only 10%～30%, and when anthracite that uses low volatile or soft coal, the effect of low NOx combusting technology reduction NOx is limited.Another kind of control NO
XThe measure of discharging is the flue-gas denitrification technology, and flue-gas denitrification technology nitric efficiency is higher, the restriction of the coal of not burnt.Be SCR (SCR) technology and SNCR (SNCR) technology by large-scale industrial application at present.SCR technology denitration efficiency is higher, but needs catalyst, and system's investment is huge, and the operating cost height; The SNCR technical equipment is simple, does not need catalyst, and operating cost is far below the SCR technology.
There is temperature window in the SNCR reaction, only could guarantee higher denitration efficiency in 900 ℃～1100 ℃ scopes, and temperature is higher than 1100 ℃, NH
3Oxidized generation NOx, NH when temperature is lower than 900 ℃
3Very low with the reaction rate of NOx.In the practical application of SNCR technology, owing to follow inner flue gas of the stove to flow, the heat of flue gas is absorbed by boiler heating surface, flue-gas temperature reduces rapidly, the flue-gas temperature gradient is big, the denitration reaction space that can satisfy 900 ℃～1100 ℃ of these temperature ranges of the best denitration efficiency of SNCR is limited, and amino reductive and flue gas mixed process need the long time (with respect to the denitration reaction time) in addition, has limited the efficient of SNCR denitration reaction.Under the suitable condition of good mixing and temperature, SNCR mechanism experiment denitration efficiency can reach 80%-90%, but the SNCR engineering use in the denitration rate lower, generally have only 30%-50%.Mitsui Babcock Energy proposes to spray natural gas (CH at boiler horizontal gas pass
4), utilize CH
4As additive the SNCR reaction still can be carried out at a lower temperature, improved whole denitration efficiency, and with this technology called after selectivity autocatalysis reduction (SACR) technology.Natural gas is rare high-grade energy in China, and most power plant of China do not possess natural gas resource, has limited this The Application of Technology.Granted publication number is that the patent of invention on August 20th, 2008 discloses " a kind of method that promotes selective non-catalytic reduction of nitrogen oxides " for CN101244361A, Granted publication day, this method of reducing has proposed with microfine coal, natural gas or the synthesis gas additive as the SNCR reaction, the denitration efficiency when raising SNCR is reflected at low temperature.But the temperature of SNCR reaction is more much lower than conventional pulverized-coal ignition temperature, even employing microfine coal, the after-flame that guarantees microfine coal is but very difficult, and be difficult to realize that in actual boiler microfine coal mixes with the good of flue gas, so the effect of the denitration efficiency when utilizing microfine coal to improve SNCR and be reflected at low temperature as additive is limited.This patent of invention also proposes with the additive of synthesis gas as the SNCR reaction in addition, but this patent does not provide the source and the gas componant of synthesis gas, and the addition of its synthesis gas is with CH in the synthesis gas
4Content and flue gas in NO content the mole recently the expression, obviously active ingredient only limits to CH in the synthesis gas of this patent indication
4
China is large agricultural country, and biomass resource is abundant, and widely distributed, and biomass gasification technology is that a kind of living beings of maturation are utilized technology, and the main component of biomass gasified gas comprises H
2, CO, CH
4, CO
2And N
2Deng, the gasification condition difference that different gasification technology adopts, various components in proportions are not quite similar, and it is H that China's leading Chinese Academy of Sciences's Guangzhou energy of living beings gasification is used for the percent by volume that canonical biometric matter gasification pneumatolytic that the gasification furnace of generating produces divides
2=14%, CO=20%, CH
4=2%, CO
2=14%, N
2=50%, visible CH
4Content is very low, but the result of study that embodies in conjunction with Fig. 3 and Fig. 5 as can be known, H
2Also can effectively reduce temperature window, the especially H that SNCR reacts with CO
2Effect is obvious, in conjunction with Fig. 7 biomass gasified gas is tested to calculate with kinetics as additive to show that biomass gasified gas can effectively reduce the temperature window of SNCR reaction.
Summary of the invention
The objective of the invention is for the single problem of active ingredient in the synthesis gas that solves narrow, the low and reaction additives of temperature window that existing selective non-catalytic reduction method exists, and then a kind of selective non-catalytic reduction method of biomass gasified gas and boiler of use of adding is provided in low-temperature space denitration rate.
Technical scheme of the present invention is: the employed boiler of selective non-catalytic reduction method that adds biomass gasified gas comprises body, burner, pendant superheater, high low temperature superheater, reheater, two economizers and two air preheaters, described body is by burner hearth, horizontal flue and back-end ductwork are made one, on the outer wall of described burner hearth burner is installed, described pendant superheater, high low temperature superheater and reheater are installed in the horizontal flue along the flow direction of flue gas in horizontal flue successively, described two economizers and two air preheaters are arranged in the back-end ductwork along the flow direction of flue gas in back-end ductwork separately, described boiler also comprises the amino reductive solution line, compressed air piping, a plurality of spray guns, biomass gasification device, pressue device, a plurality of additives gas injection apparatus, additives gas pipeline and biomass gasified gas pipeline, a plurality of ports of export of described amino reductive solution line all are communicated with the solution inlet of corresponding spray gun, a plurality of ports of export of compressed air piping all are communicated with the atomizing medium inlet of corresponding spray gun, a plurality of nozzle end of described a plurality of spray guns are passed respectively near the sidewall of the burner hearth of furnace arch, furnace nose and the sidewall of horizontal flue and are placed in burner hearth and the horizontal flue, the two ends of described biomass gasified gas pipeline are communicated with the arrival end of biomass gasification device and pressue device respectively, the port of export of described pressue device is communicated with the additives gas pipeline, a plurality of outlet sides of described additives gas pipeline are communicated with the air inlet inlet of corresponding additives gas injection apparatus, and the sidewall that a plurality of ejection end of described a plurality of additives gas injection apparatus are all passed horizontal flue places in the horizontal flue.
The selective non-catalytic reduction method of interpolation biomass gasified gas of the present invention is as follows: amino reductive solution is charged in the amino reductive solution line, by a plurality of spray guns amino reductive solution is sprayed near the furnace arch, furnace nose the burner hearth and horizontal flue, near the described furnace arch, furnace nose burner hearth and the temperature range in the horizontal flue be at 900 ℃～1100 ℃, and amino reductive solution spray into the NH that total amount produces with reducing agent
3The mol ratio that sprays into NOx in the preceding flue gas with reducing agent is represented NH
3With the mol ratio of NOx in the flue gas be 1.1～1.8; And the NH that the straying quatity that feeds the amino reductive solution in the stove before biomass gasified gas sprays into produces with reducing agent
3The mol ratio that sprays into NOx in the preceding flue gas with amino reductive solution is represented NH
3With the mol ratio of NOx in the flue gas be 0.5～1.1; The biomass gasified gas that biomass gasification device is produced charges in the biomass gasified gas pipeline, be forced into 0.5MPa～0.8MPa through pressue device, spray in the burner hearth and horizontal flue of 800 ℃～950 ℃ of temperature provinces by a plurality of additives gas injection apparatus again, biomass gasified gas spray into total amount and biomass gasified gas spray into before in the flue gas mol ratio of NOx be 0.3～1.2; With compressed air as the compressed air duct of atomizing medium by being arranged on nozzle on burner hearth and the horizontal flue in amino reductive solution sprays into burner hearth and horizontal flue; Flue gas after the reduction flows out through back-end ductwork.
The present invention compared with prior art has following beneficial effect: the biomass resource that method utilization of the present invention can be regenerated, adopt ripe biomass gasification technology to prepare the additive of biomass gasified gas as the SNCR reaction, H in the typical composition that biomass gasified gas comprises
2, CO and CH
4Deng improving NH greatly
3With NOx in the flue gas denitration reaction efficient at low-temperature range, thereby improve whole denitration efficiency, denitration efficiency can reach 40%-65%, simultaneous temperature window broadness, and the ammonia wastage of control boiler export is less than 10ppm.Method of the present invention not only effectively improves SNCR technology denitration efficiency, the new way that also provides living beings to utilize, and China's biomass resource is widely distributed, easy to implement simultaneously.Steam generator system of the present invention is simple, reliability is high, and can be formed by existing coal-fired boiler reform, has saved substantial contribution.
Description of drawings
Fig. 1 is the overall structure schematic diagram of the specific embodiment of the present invention one, and temperature was to NH when Fig. 2 was additive-free
3With the simulation of the influence of NOx reaction and the comparison diagram of experimental result (experiment condition is to be 300ppm at the NO initial concentration, and the ammonia nitrogen mol ratio is 1.5), Fig. 3 is H
2Temperature is to NH during as additive
3With the simulation of the influence of NOx reaction and the comparison diagram of experimental result (experiment condition is at NO initial concentration 300ppm, and the ammonia nitrogen mol ratio is 1.5, and additive and NO initial concentration mol ratio are to obtain under 1 the condition), Fig. 4 is CH
4Temperature is to NH during as additive
3With the simulation of the influence of NOx reaction and the comparison diagram of experimental result (experiment condition is at NO initial concentration 300ppm, and the ammonia nitrogen mol ratio is 1.5, and additive and NO initial concentration mol ratio are to obtain under 1 the condition), Fig. 5 be CO during as additive temperature to NH
3With the simulation of the influence of NOx reaction and the comparison diagram of experimental result (experiment condition is at NO initial concentration 300ppm, and the ammonia nitrogen mol ratio is 1.5, and additive and NO initial concentration mol ratio are to obtain under 1 the condition), Fig. 6 is H
2, CH
4With CO during jointly as additive temperature to NH
3(experiment condition is at NO initial concentration 300ppm, and the ammonia nitrogen mol ratio is 1.5, and additive and NO initial concentration mol ratio are 1, H with the simulation of the influence of NOx reaction and the comparison diagram of experimental result
2, CH
4With CO proportioning volume ratio is to obtain under the condition of 1:1:1), Fig. 7 be biomass gasified gas as additive and when additive-free temperature to NH
3(experiment condition is at NO initial concentration 300ppm, and the ammonia nitrogen mol ratio is 1.5, and the percent by volume of the biomass gasified gas composition of additive is H with the analog result comparison diagram of the influence of NOx reaction
2=14%, CO=20%, CH
4=2%, CO
2=14%, N
2=50%, additive and NO initial concentration mol ratio are to obtain under 1 the condition).
The specific embodiment
The specific embodiment one: present embodiment is described in conjunction with Fig. 1, present embodiment comprises body, burner 4, pendant superheater 7, high low temperature superheater 8, reheater 10, two economizers 12 and two air preheaters 13, described body is by burner hearth 5, horizontal flue 9 and back-end ductwork 11 are made one, burner 4 is installed on the outer wall of described burner hearth 5, described pendant superheater 7, high low temperature superheater 8 and reheater 10 are installed in the horizontal flue 9 successively along the flow direction of flue gas in horizontal flue 9, described two economizers 12 and two air preheaters 13 are arranged in the back-end ductwork 11 separately along the flow direction of flue gas in back-end ductwork 11, described boiler also comprises amino reductive solution line 1, compressed air piping 2, a plurality of spray guns 3, biomass gasification device 14, pressue device 15, a plurality of additives gas injection apparatus 16, additives gas pipeline 17 and biomass gasified gas pipeline 18, a plurality of port of export 1-1 of described amino reductive solution line 1 all are communicated with the solution inlet 3-2 of corresponding spray gun 3, a plurality of port of export 2-1 of compressed air piping 2 all are communicated with the atomizing medium inlet 3-3 of corresponding spray gun 3, a plurality of nozzle end 3-1 of described a plurality of spray gun 3 pass respectively near the sidewall of the burner hearth 5 of furnace arch, furnace nose 6 and the sidewall of horizontal flue 9 and place in burner hearth 5 and the horizontal flue 9, the two ends of described biomass gasified gas pipeline 18 are communicated with the arrival end of biomass gasification device 14 and pressue device 15 respectively, the port of export of described pressue device 15 is communicated with additives gas pipeline 17, a plurality of outlet side 17-1 of described additives gas pipeline 17 are communicated with the air inlet inlet 16-2 of corresponding additives gas injection apparatus 16, and the sidewall that a plurality of ejection end 16-1 of described a plurality of additives gas injection apparatus 16 all pass horizontal flue 9 places in the horizontal flue 9.
The specific embodiment two: present embodiment is described in conjunction with Fig. 1, the selective non-catalytic reduction method of the interpolation biomass gasified gas of present embodiment is as follows: amino reductive solution is charged in the amino reductive solution line 1, by a plurality of spray guns 3 amino reductive solution is sprayed near the furnace arch, furnace nose 6 the burner hearth 5 and horizontal flue 9, temperature range near the described furnace arch, furnace nose burner hearth 5 and the horizontal flue 9 is at 900 ℃～1100 ℃, and amino reductive solution spray into the NH that total amount produces with reducing agent
3The mol ratio that sprays into NOx in the preceding flue gas with reducing agent is represented NH
3With the mol ratio of NOx in the flue gas be 1.1～1.8; And the NH that the straying quatity that feeds the amino reductive solution in the stove before biomass gasified gas sprays into produces with reducing agent
3The mol ratio that sprays into NOx in the preceding flue gas with amino reductive solution is represented NH
3With the mol ratio of NOx in the flue gas be 0.5～1.1; The biomass gasified gas that biomass gasification device 14 is produced charges in the biomass gasified gas pipeline 18, be forced into 0.5MPa～0.8MPa through pressue device 15, spray in the burner hearth 5 and horizontal flue 9 of 800 ℃～950 ℃ of temperature provinces by a plurality of additives gas injection apparatus 16 again, biomass gasified gas spray into total amount and biomass gasified gas spray into before in the flue gas mol ratio of NOx be 0.3～1.2; With compressed air as the compressed air duct 2 of atomizing medium by being arranged on nozzle 3 on burner hearth 5 and the horizontal flue 9 in amino reductive solution sprays into burner hearth 5 and horizontal flue 9; Flue gas after the reduction flows out through back-end ductwork 11.Described biomass gasified gas can be replaced by coal gas gasification or coke-stove gas.
The specific embodiment three: the difference of the present embodiment and the specific embodiment two is: amino reductive solution spray into the NH that total amount produces with reducing agent
3The mol ratio that sprays into NOx in the preceding flue gas with amino reductive solution is 1.5～1.8.Denitration efficiency reaches 40-65%.
The specific embodiment four: the difference of the present embodiment and the specific embodiment two is: amino reductive solution spray into the NH that total amount produces with reducing agent
3The mol ratio that sprays into NOx in the preceding flue gas with amino reductive solution is 1.1～1.5.Present embodiment amino reductive solution consumption amount is suitable with conventional SNCR, sprays into pro rate by adjusting amino reductive solution and biomass gasified gas, and nitric efficiency can reach 35%-60%.
The specific embodiment five: the difference of the present embodiment and the specific embodiment two is: biomass gasified gas spray into total amount and biomass gasified gas spray into before in the flue gas mol ratio of NOx be 0.3～0.8.Nitric efficiency can reach 40%-60%.
The specific embodiment six: the difference of the present embodiment and the specific embodiment two is: biomass gasified gas spray into total amount and biomass gasified gas spray into before in the flue gas mol ratio of NOx be 0.8～1.2.Nitric efficiency can reach 50%-65%.
Claims (6)
1, a kind of employed boiler of selective non-catalytic reduction method that adds biomass gasified gas, it comprises body, burner (4), pendant superheater (7), high low temperature superheater (8), reheater (10), two economizers (12) and two air preheaters (13), described body is by burner hearth (5), horizontal flue (9) and back-end ductwork (11) are made one, burner (4) is installed on the outer wall of described burner hearth (5), described pendant superheater (7), high low temperature superheater (8) and reheater (10) are installed in the horizontal flue (9) successively along the flow direction of flue gas in horizontal flue (9), described two economizers (12) and two air preheaters (13) are arranged in the back-end ductwork (11) separately along the flow direction of flue gas in back-end ductwork (11), it is characterized in that: described boiler also comprises amino reductive solution line (1), compressed air piping (2), a plurality of spray guns (3), biomass gasification device (14), pressue device (15), a plurality of additives gas injection apparatus (16), additives gas pipeline (17) and biomass gasified gas pipeline (18), a plurality of ports of export (1-1) of described amino reductive solution line (1) all are communicated with the solution inlet (3-2) of corresponding spray gun (3), a plurality of ports of export (2-1) of compressed air piping (2) all are communicated with the atomizing medium inlet (3-3) of corresponding spray gun (3), a plurality of nozzle end (3-1) of described a plurality of spray gun (3) are passed respectively near the sidewall of the burner hearth (5) of furnace arch, furnace nose (6) and the sidewall of horizontal flue (9) and are placed in burner hearth (5) and the horizontal flue (9), the two ends of described biomass gasified gas pipeline (18) are communicated with the arrival end of biomass gasification device (14) and pressue device (15) respectively, the port of export of described pressue device (15) is communicated with additives gas pipeline (17), a plurality of outlet sides (17-1) of described additives gas pipeline (17) are communicated with the air inlet inlet (16-2) of corresponding additives gas injection apparatus (16), and the sidewall that a plurality of ejection end (16-1) of described a plurality of additives gas injection apparatus (16) are all passed horizontal flue (9) places in the horizontal flue (9).
2, a kind of selective non-catalytic reduction method that adds biomass gasified gas, it is characterized in that: described method is finished like this: amino reductive solution is charged in the amino reductive solution line (1), by a plurality of spray guns (3) amino reductive solution is sprayed in furnace arch, furnace nose (6) the neighbouring burner hearth (5) and horizontal flue (9), near the described furnace arch, furnace nose (6) burner hearth (5) and the temperature range in the horizontal flue (9) be at 900 ℃～1100 ℃, and amino reductive solution spray into the NH of total amount with the reducing agent generation
3The mol ratio that sprays into NOx in the preceding flue gas with reducing agent is represented NH
3With the mol ratio of NOx in the flue gas be 1.1～1.8; The biomass gasified gas that biomass gasification device (14) is produced charges in the biomass gasified gas pipeline (18), be forced into 0.5MPa～0.8MPa through pressue device (15), spray in the burner hearth (5) and horizontal flue (9) of 800 ℃～950 ℃ of temperature provinces by a plurality of additives gas injection apparatus (16) again, biomass gasified gas spray into total amount and biomass gasified gas spray into before in the flue gas mol ratio of NOx be 0.3～1.2; With compressed air as the compressed air duct of atomizing medium (2) by being arranged on nozzle (3) on burner hearth (5) and the horizontal flue (9) in amino reductive solution sprays into burner hearth (5) and horizontal flue (9); Flue gas after the reduction flows out through back-end ductwork (11).
3, according to the selective non-catalytic reduction method of the described interpolation biomass gasified gas of claim 2, it is characterized in that: amino reductive solution spray into the NH that total amount produces with reducing agent
3With the mol ratio of NOx in the flue gas be 1.1～1.5.
4, according to the selective non-catalytic reduction method of the described interpolation biomass gasified gas of claim 2, it is characterized in that: amino reductive solution spray into the NH that total amount produces with reducing agent
3With the mol ratio of NOx in the flue gas be 1.5～1.8.
5, according to the selective non-catalytic reduction method of the described interpolation biomass gasified gas of claim 2, it is characterized in that: biomass gasified gas spray into total amount and biomass gasified gas spray into before in the flue gas mol ratio of NOx be 0.3～0.8.
6, according to the selective non-catalytic reduction method of the described interpolation biomass gasified gas of claim 2, it is characterized in that: biomass gasified gas spray into total amount and biomass gasified gas spray into before in the flue gas mol ratio of NOx be 0.8～1.2.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA200810209608XA CN101433800A (en) | 2008-12-04 | 2008-12-04 | Selective non-catalytic reduction method with added gasified biomass gas and used boiler |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA200810209608XA CN101433800A (en) | 2008-12-04 | 2008-12-04 | Selective non-catalytic reduction method with added gasified biomass gas and used boiler |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN101433800A true CN101433800A (en) | 2009-05-20 |
Family
ID=40708530
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNA200810209608XA Pending CN101433800A (en) | 2008-12-04 | 2008-12-04 | Selective non-catalytic reduction method with added gasified biomass gas and used boiler |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN101433800A (en) |
Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101773781A (en) * | 2010-03-23 | 2010-07-14 | 浙江大学 | Method for realizing SNCR and SCR combined denitration by using coal-fired boiler |
| CN102242936A (en) * | 2010-05-12 | 2011-11-16 | 永彬(北京)科技发展有限公司 | Ejecting device and method of liquid additive for coal-fired boiler |
| CN101785959B (en) * | 2010-01-22 | 2011-12-21 | 中国计量学院 | Selective non-catalytic NOx control method for auxiliary re-burning temperature control |
| CN104403697A (en) * | 2014-11-26 | 2015-03-11 | 陕西延长石油（集团）有限责任公司 | Flue gas emission pollutant control process device for coal-fired boiler in power plant and control method |
| CN105169917A (en) * | 2015-09-26 | 2015-12-23 | 国网河南省电力公司电力科学研究院 | SNCR-SCR combined denitration system and method based on ammonia nitrogen molar ratio detection and regulation |
| CN105536468A (en) * | 2015-12-31 | 2016-05-04 | 神华集团有限责任公司 | Denitration method |
| CN107255269A (en) * | 2017-06-07 | 2017-10-17 | 国电科学技术研究院 | Station boiler system and station boiler integrate the method that gasification of biomass afterburning improves afterbody cigarette temperature |
| CN107715668A (en) * | 2017-10-30 | 2018-02-23 | 东方电气集团东方锅炉股份有限公司 | A kind of flue gas high concentrate NOx realizes the device of minimum discharge |
| CN109058979A (en) * | 2018-08-13 | 2018-12-21 | 中国华能集团有限公司 | Cyclone furnace denitrating system and method |
| CN109404950A (en) * | 2018-09-27 | 2019-03-01 | 哈尔滨工业大学 | A kind of boiler flue gas treatment system of high efficiency, low cost |
| CN112944348A (en) * | 2020-12-27 | 2021-06-11 | 上海康恒环境股份有限公司 | Waste incineration grate furnace reburning denitration methane treatment system |
-
2008
- 2008-12-04 CN CNA200810209608XA patent/CN101433800A/en active Pending
Cited By (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101785959B (en) * | 2010-01-22 | 2011-12-21 | 中国计量学院 | Selective non-catalytic NOx control method for auxiliary re-burning temperature control |
| CN101773781B (en) * | 2010-03-23 | 2012-07-18 | 浙江大学 | Method for realizing SNCR and SCR combined denitration by using coal-fired boiler |
| CN101773781A (en) * | 2010-03-23 | 2010-07-14 | 浙江大学 | Method for realizing SNCR and SCR combined denitration by using coal-fired boiler |
| CN102242936A (en) * | 2010-05-12 | 2011-11-16 | 永彬(北京)科技发展有限公司 | Ejecting device and method of liquid additive for coal-fired boiler |
| CN104403697B (en) * | 2014-11-26 | 2016-08-24 | 陕西延长石油（集团）有限责任公司 | A kind of coal-fired boiler in power plant smoke emissioning pollution thing controls device and control method |
| CN104403697A (en) * | 2014-11-26 | 2015-03-11 | 陕西延长石油（集团）有限责任公司 | Flue gas emission pollutant control process device for coal-fired boiler in power plant and control method |
| CN105169917A (en) * | 2015-09-26 | 2015-12-23 | 国网河南省电力公司电力科学研究院 | SNCR-SCR combined denitration system and method based on ammonia nitrogen molar ratio detection and regulation |
| CN105536468A (en) * | 2015-12-31 | 2016-05-04 | 神华集团有限责任公司 | Denitration method |
| CN107255269A (en) * | 2017-06-07 | 2017-10-17 | 国电科学技术研究院 | Station boiler system and station boiler integrate the method that gasification of biomass afterburning improves afterbody cigarette temperature |
| CN107715668A (en) * | 2017-10-30 | 2018-02-23 | 东方电气集团东方锅炉股份有限公司 | A kind of flue gas high concentrate NOx realizes the device of minimum discharge |
| CN109058979A (en) * | 2018-08-13 | 2018-12-21 | 中国华能集团有限公司 | Cyclone furnace denitrating system and method |
| CN109058979B (en) * | 2018-08-13 | 2023-11-03 | 中国华能集团有限公司 | Cyclone furnace denitration system and method |
| CN109404950A (en) * | 2018-09-27 | 2019-03-01 | 哈尔滨工业大学 | A kind of boiler flue gas treatment system of high efficiency, low cost |
| CN112944348A (en) * | 2020-12-27 | 2021-06-11 | 上海康恒环境股份有限公司 | Waste incineration grate furnace reburning denitration methane treatment system |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN101433799A (en) | Selective non-catalytic reduction method for gasifying and atomizing biomass and used boiler | |
| CN101433800A (en) | Selective non-catalytic reduction method with added gasified biomass gas and used boiler | |
| CN100464122C (en) | Method of decreasing release of nitrogen oxide in the pulverized-coal fired boiler and its used boiler | |
| CN104190252B (en) | A kind of have the multistage pyrolysis coupling flue gas denitrification system that independent SCR mends ammonia spray gun | |
| CN102716665B (en) | SNCR (selective non-catalytic reduction) and SCR (selective catalytic reduction) combined process flue gas denitrification system of CFB (circulating fluidized bed) boiler | |
| CN101482262B (en) | Lignite boiler combustion method capable of reducing nitrogen oxide emission | |
| CN101244361B (en) | Method for accelerating selective non-catalytic reduction of nitrogen oxides | |
| CN102179171B (en) | Multi-stage themolysis coupled denitration method using front flow field uniformizing device and device thereof | |
| CN204395778U (en) | A kind of ultra-clean exhaust system for fluidized-bed combustion boiler | |
| CN104437082A (en) | Ultra-clean discharge system and method for fluidized bed boiler | |
| CN208406566U (en) | A kind of multipoint mode injection apparatus for circulating fluidized bed boiler SNCR denitration system | |
| CN105485664A (en) | Composite denitration method and device | |
| CN103263828A (en) | Fume gas denitration system of coal-fired boiler based on SNCR (Selective Non-catalytic Reduction) and SCR (Selective Catalytic Reduction) combination method | |
| CN108434964A (en) | A kind of matrix form injection apparatus for circulating fluidized bed boiler SNCR denitration system | |
| CN110925747A (en) | Combustion device convenient for reducing NOx by directly spraying coal water slurry into low-oxygen flame | |
| CN204933244U (en) | NOx removal device in coal-burning power plant's coal-powder boiler flue gas | |
| CN211502750U (en) | Combustion device convenient for reducing NOx by directly spraying coal water slurry into low-oxygen flame | |
| CN209828701U (en) | Preparation facilities of mixed denitrifier based on aqueous ammonia + hydrazine | |
| CN204447709U (en) | A kind of SNCR denitration system | |
| CN112240560A (en) | Energy-saving SNCR (selective non-catalytic reduction) denitration device and denitration method | |
| CN203281209U (en) | Flue gas denitration system by adopting SNCR and SCR combination method for coal-fired boiler | |
| CN102671532B (en) | Enhanced selective non-catalytic reduction flue gas denitrification method | |
| CN202983514U (en) | Integrated SCR-SNCR (silicon controlled rectifier-selective non-catalytic reduction) combined denitration system | |
| CN202087235U (en) | Multi-level thermolysis coupling denitrification device with pre-flow field equalizing device | |
| CN202387369U (en) | High-efficiency denitration device for pulverized coal boiler |
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: 20090520 |