CN201772440U - High-efficiency burning zone burning boiler capable of controlling emission of atmospheric pollutant during burning - Google Patents
High-efficiency burning zone burning boiler capable of controlling emission of atmospheric pollutant during burning Download PDFInfo
- Publication number
- CN201772440U CN201772440U CN2010201944525U CN201020194452U CN201772440U CN 201772440 U CN201772440 U CN 201772440U CN 2010201944525 U CN2010201944525 U CN 2010201944525U CN 201020194452 U CN201020194452 U CN 201020194452U CN 201772440 U CN201772440 U CN 201772440U
- Authority
- CN
- China
- Prior art keywords
- burning
- grate
- boiler
- arch
- cyclone
- 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.)
- Expired - Fee Related
Links
Images
Landscapes
- Solid-Fuel Combustion (AREA)
- Combustion Of Fluid Fuel (AREA)
Abstract
The utility model provides a high-efficiency burning zone burning boiler capable of controlling the emission of atmospheric pollutant during burning, belonging to the technical field of the burning of the coal burning boiler. The boiler is characterized in that an assembled boiler arch covers a whole movable fire bed; the assembled boiler arch consists of a perpendicular section a, an arc section b, a front horizontal section c, a middle horizontal section d, a back vertical section e and a back horizontal section f; boiler walls at the two sides of a whirlwind burning region A are provided with two circular outlets which lead to flues at the two sides; a main burning region B and a burning-out region C are communicated with the whirlwind burning region A by a tangential passageway at the upper edge of a flow guiding arch; the movable fire bed within the range of the main burning region B and the burning-out region C is internally provided with a plurality of fire grate blowing rooms; the boiler wall of the perpendicular section of the assembled boiler in the whirlwind burning region A which is near to the outlet on the boiler walls at the two sides is respectively provided with a secondary wind outlets; and the back end of the back horizontal section f is provided with an adjusting gate. The high-efficiency burning zone burning boiler has the benefit effects of: being capable of effectively reducing the carbon content of the slag, being good in effect for removing smoke and dust in the boiler, and achieving the synthetic technical effects such as the emission of the smoke and the dust, the sulfur dioxide and the oxynitride with ultra-low concentration, the smokeless burning, the high efficiency, and the energy saving.
Description
Technical field:
The utility model belongs to the coal-burning boiler field of combustion technology.
Background technology:
At present, machine burning grate firing boiler both domestic and external generally adopts traditional front and back arch structure pattern.Boiler coal adaptive capacity is relatively poor, and the ignition lag phenomenon happens occasionally, and combustion position is not ideal enough, and boiler slag carbon content is higher, and boiler combustion efficiency is lower.Smoke medicining dust-removing effect is poor in the stove, and the generation of oxynitrides can't be effectively controlled, and causes China's coal-burned industrial boiler to become one of primary pollution source of atmospheric environment.
For solve coal inferior catch fire and stove in the smoke abatement and dust control problem, " the eddy flow chimney arch moves gasification fractional combustion grate furnace " of once declaring be utility model patent (ZL02211497.1), it is conceived substantially and has initiative, but the validity of the manufacturability of the furnace arch structure feature that relates to, practicality and air distribution technology is relatively poor
Summary of the invention:
The purpose of this utility model is: the efficient burning grate furnace of control Air Pollutant Emission in a kind of burning is provided, and it has fundamentally overcome the related furnace arch structure feature of many drawbacks of traditional front and back arch structure mode layer burner and aforementioned patent and the limitation of air distribution technology.
The technical solution of the utility model is: in middle-size and small-size grate firing boiler, combined furnace arch all covers mobile grate, combined furnace arch is made up of vertical section a, arc section b, preceding horizontal segment c, middle horizontal segment d, back vertical section e, back horizontal segment f from front to back successively, water conservancy diversion arch below the preceding horizontal segment c is upright furnace wall, it is divided into the cyclone firing district A of mobile grate head, the primary zone B at rear portion, burning-out zone C with mobile grate.There is round exit to lead to the bilateral flue on the bilateral furnace wall of cyclone firing district A, primary zone B and burning-out zone C communicate with cyclone firing district A through the tangential passage of water conservancy diversion arch upper edge, in the mobile grate of primary zone B and burning-out zone C scope, be provided with several fire grate plenum chambers, combined furnace arch vertical section furnace wall in cyclone firing district A respectively is provided with an overfiren air port near the round exit place on the bilateral furnace wall, and the round exit lower edge on the bilateral furnace wall of overfiren air port center line and cyclone firing district A is tangent.The rear end of back horizontal segment f is provided with 1-2 flue gas short circuit regulating gate near Hou Qiangchu.
When being used for medium and small moulded coal and the technological development of biomass fuel compound combustion grate firing boiler, technical scheme figure only sets up powdery or particulate biomass fuel air-cone with 1 behind stove.This air-cone is made of feeding wind induction tunnel, flue gas recycled regulating gate, spray combustion mouth.
When being used for big-and-middle-sized grate firing boiler technological development, combined furnace arch only covers the cyclone firing district A of mobile grate head, and combined furnace arch is made up of vertical section a, arc section b, preceding horizontal segment c from front to back successively.Water conservancy diversion arch below the preceding horizontal segment c is upright furnace wall, it is divided into mobile grate the cyclone firing district A of mobile grate head, the primary zone B at rear portion, burning-out zone C, the upper space of the cyclone firing district A of mobile grate head vertically is provided with 1-4 cyclone combustion chamber side by side, all constitute the tangential passage that primary zone B enters this cyclone combustion chamber between each cyclone combustion chamber by the water-cooled furnace wall separation and in the upper edge of its vertical section, there is round exit to lead to the bilateral flue on the bilateral furnace wall of cyclone firing district A and each cyclone combustion chamber, in the mobile grate of primary zone B and burning-out zone C scope, be provided with several fire grate plenum chambers, combined furnace arch vertical section furnace wall in cyclone firing district A respectively is provided with 1-2 overfiren air port near the round exit place on the bilateral furnace wall, and the round exit lower edge on the bilateral furnace wall of overfiren air port center line and cyclone firing district A is tangent.The top of mobile grate burning-out zone C is provided with the water-cooled furnace wall rear arch, the water-cooled furnace wall rear arch by top rake section g after horizontal segment h form.
The beneficial effects of the utility model are: combine with the furnace arch structure of uniqueness and the air distribution technology of science, moving bed gasification and fuel staging, the air classification of having realized fuel (raw coal, solid sulphur industrial shaping coal) burn, can realize low excess air coefficient operation, the coal adaptive capacity is strong, can effectively reduce boiler slag carbon content, smoke medicining dust-removing effect is good in the stove, has reached flue dust, sulfur dioxide, nitrogen oxide ultra-low concentration discharge, smokeless combustion, energy-efficient complex art effect.When behind stove, setting up powdery or particulate biomass fuel air-cone, can realize the compound combustion of coal and biomass fuel.
Description of drawings:
Fig. 1 is the middle-size and small-size grate firing boiler overall structure of a utility model longitudinal section;
Fig. 2 is the middle-size and small-size grate firing boiler sectional elevation of the utility model;
Fig. 3 is the overall structure longitudinal section of medium and small moulded coal of the utility model and biomass fuel compound combustion grate firing boiler;
Fig. 4 is the big-and-middle-sized grate firing boiler overall structure of a utility model longitudinal section;
Fig. 5 is the big-and-middle-sized grate firing boiler overall structure of a utility model sectional elevation.
The specific embodiment
Below in conjunction with accompanying drawing the utility model is described further:
As shown in Figure 1, 2, 3, the 1st, mobile grate; The 2nd, the cyclone chamber side wall; The 3rd, the water conservancy diversion arch; The 4th, the fire grate plenum chamber; The 5th, furnace bin; The 6th, raw coal or industrial shaping coal; The 7th, the coal bunker gate; The 8th, the overfiren air port at combined furnace arch vertical section two ends; The 9th, the cyclone chamber round exit; The 10th, the tangential passage in B district to A district; The 11st, combined furnace arch; The 12nd, secondary furnace; The 13rd, flue gas short circuit (circulation) regulating gate; The 14th, combustion chamber Hou Qiang; The 15th, inspection door; The 16th, the both sides smoke-box; The 17th, feeding wind induction tunnel; The 18th, the flue gas recycled regulating gate; The 19th, spray combustion mouth.
Shown in Fig. 4,5: the 1st, mobile grate; The 2nd, the cyclone chamber side wall; The 3rd, the water conservancy diversion arch; The 4th, the fire grate plenum chamber; The 5th, furnace bin; The 6th, raw coal or industrial shaping coal; The 7th, the coal bunker gate; The 8th, the overfiren air port at combined furnace arch vertical section two ends; The 9th, cyclone firing district round exit; The 10th, a plurality of tangential passage in B district to A district; The 11st, the water-cooled furnace wall between the cyclone combustion chamber; The 12nd, each cyclone chamber round exit; The 13rd, two-sided exposure water-cooling wall; The 14th, the combustion chamber rear water wall; The 15th, inspection door; The 16th, the both sides smoke-box.
Coal-fired (raw coal or solid sulphur industrial shaping coal) from furnace bin after the coal bunker gate enters in the stove, in high temperature cyclone firing district A, heated up by Fast Heating, the coal seam in the reducing atmosphere of the high temperature of air feed not, hypoxemia, rich fuel fast gasification and driedly saute, generation that reducing atmosphere has suppressed fuel type NOx effectively, in a single day gasification product (fuel gas) leaves the coal seam and just is involved in the swirling eddy, and the NOx that has generated of in the future autonomous combustion zone B is reduced into dinitrogen.After the coking coal seam that has caught fire enters main combustion zone B, continue gasification and burning, fuel gas and high-temperature combustion product that gasification produces tangentially enter completing combustion behind the cyclone firing district.The high temperature swirling eddy from the cyclone firing district or cyclone combustion chamber enter the bilateral smoke-box.Air compartment in the mobile grate in high temperature cyclone firing district (being the A district) is air feed not, greatly reduces flying dust concentration in the flue gas.Return the existence of flame formula high temperature cyclone firing district A, not only realized the circulating combustion of flying dust, strengthened smoke medicining dust-removing effect in the stove, and improved greatly fuel bed the mobile intensity of gasification, created condition for the burning of fuel-staged combustion, air classification, suppressed the generation of nitrogen oxide effectively.Covering the terminal flue gas short circuit regulating gate appropriateness of horizontal segment behind the combined furnace arch of burning-out zone C (or behind the water-cooled furnace wall rear arch horizontal segment) opens, not only the water vapour of cold air that slag remover can be bled and generation directly enters the rear portion flue, draw after also can be an amount of the high-temperature flue gas (flame) of main combustion zone, create hot environment for the after-flame of slag, be beneficial to improve boiler combustion efficiency.When behind stove, setting up powdery or particulate biomass fuel air-cone and carry out the compound combustion of coal and biomass fuel, utilize feeding wind injection suction recirculation high-temperature flue gas, reproducibility combustion atmosphere for biomass fuel creation high temperature, hypoxemia, rich fuel effectively suppresses the generation of fuel NO.
Claims (3)
1. the efficient burning grate furnace of control Air Pollutant Emission in the burning, it is characterized in that: in middle-size and small-size grate firing boiler, combined furnace arch all covers mobile grate, combined furnace arch is made up of vertical section a, arc section b, preceding horizontal segment c, middle horizontal segment d, back vertical section e, back horizontal segment f from front to back successively, water conservancy diversion arch below the preceding horizontal segment c is upright furnace wall, it is divided into the cyclone firing district A of mobile grate head, the primary zone B at rear portion, burning-out zone C with mobile grate; There is round exit to lead to the bilateral flue on the bilateral furnace wall of cyclone firing district A, primary zone B and burning-out zone C communicate with cyclone firing district A through the tangential passage of water conservancy diversion arch upper edge, in the mobile grate of primary zone B and burning-out zone C scope, be provided with several fire grate plenum chambers, combined furnace arch vertical section furnace wall in cyclone firing district A respectively is provided with an overfiren air port near the round exit place on the bilateral furnace wall, and the round exit lower edge on the bilateral furnace wall of overfiren air port center line and cyclone firing district A is tangent; The rear end of back horizontal segment f is provided with 1-2 flue gas short circuit regulating gate near Hou Qiangchu.
2. the efficient burning grate furnace of control Air Pollutant Emission in a kind of burning according to claim 1, it is characterized in that: when being used for medium and small moulded coal and biomass fuel compound combustion grate firing boiler, set up powdery or particulate biomass fuel air-cone behind stove, this air-cone is made of feeding wind induction tunnel, flue gas recycled regulating gate, spray combustion mouth.
3. the efficient burning grate furnace of control Air Pollutant Emission in a kind of burning according to claim 1, it is characterized in that: when being used for big-and-middle-sized grate firing boiler technological development, combined furnace arch only covers the cyclone firing district A of mobile grate head, and combined furnace arch is made up of vertical section a, arc section b, preceding horizontal segment c from front to back successively; Water conservancy diversion arch below the preceding horizontal segment c is upright furnace wall, it is divided into mobile grate the cyclone firing district A of mobile grate head, the primary zone B at rear portion, burning-out zone C, the upper space of the cyclone firing district A of mobile grate head vertically is provided with 1-4 cyclone combustion chamber side by side, all constitute the tangential passage that primary zone B enters this cyclone combustion chamber between each cyclone combustion chamber by the water-cooled furnace wall separation and in the upper edge of its vertical section, there is round exit to lead to the bilateral flue on the bilateral furnace wall of cyclone firing district A and each cyclone combustion chamber, in the mobile grate of primary zone B and burning-out zone C scope, be provided with several fire grate plenum chambers, combined furnace arch vertical section furnace wall in cyclone firing district A respectively is provided with 1-2 overfiren air port near the round exit place on the bilateral furnace wall, and the round exit lower edge on the bilateral furnace wall of overfiren air port center line and cyclone firing district A is tangent; The top of mobile grate burning-out zone C is provided with the water-cooled furnace wall rear arch, the water-cooled furnace wall rear arch by top rake section g after horizontal segment h form.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010201944525U CN201772440U (en) | 2010-05-19 | 2010-05-19 | High-efficiency burning zone burning boiler capable of controlling emission of atmospheric pollutant during burning |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010201944525U CN201772440U (en) | 2010-05-19 | 2010-05-19 | High-efficiency burning zone burning boiler capable of controlling emission of atmospheric pollutant during burning |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201772440U true CN201772440U (en) | 2011-03-23 |
Family
ID=43752286
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010201944525U Expired - Fee Related CN201772440U (en) | 2010-05-19 | 2010-05-19 | High-efficiency burning zone burning boiler capable of controlling emission of atmospheric pollutant during burning |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201772440U (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102721039A (en) * | 2012-07-12 | 2012-10-10 | 新乡工神锅炉有限公司 | Dedusting boiler with low combustion calorific value |
| CN104075310A (en) * | 2013-03-29 | 2014-10-01 | 麦特能源股份有限责任公司 | Method for straw combustion in the boiler and a hot water boiler fired with straw |
| CN105276566A (en) * | 2015-09-16 | 2016-01-27 | 中国石油化工股份有限公司 | Method for retrofitting coal-fired boiler into biomass boiler |
| CN105588115A (en) * | 2016-02-19 | 2016-05-18 | 卢长柱 | Efficient, low-nitrogen, low-sulfur, low-dust and large-capacity layer-combustion boiler and combustion method |
| CN106989384A (en) * | 2017-05-16 | 2017-07-28 | 烟台龙源电力技术股份有限公司 | A kind of layer combustion chain-grate boiler of efficient low nitrogen burning |
-
2010
- 2010-05-19 CN CN2010201944525U patent/CN201772440U/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102721039A (en) * | 2012-07-12 | 2012-10-10 | 新乡工神锅炉有限公司 | Dedusting boiler with low combustion calorific value |
| CN104075310A (en) * | 2013-03-29 | 2014-10-01 | 麦特能源股份有限责任公司 | Method for straw combustion in the boiler and a hot water boiler fired with straw |
| CN105276566A (en) * | 2015-09-16 | 2016-01-27 | 中国石油化工股份有限公司 | Method for retrofitting coal-fired boiler into biomass boiler |
| CN105588115A (en) * | 2016-02-19 | 2016-05-18 | 卢长柱 | Efficient, low-nitrogen, low-sulfur, low-dust and large-capacity layer-combustion boiler and combustion method |
| CN106989384A (en) * | 2017-05-16 | 2017-07-28 | 烟台龙源电力技术股份有限公司 | A kind of layer combustion chain-grate boiler of efficient low nitrogen burning |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN102252320B (en) | Biomass low-nitrogen direct combustion boiler | |
| CN201772440U (en) | High-efficiency burning zone burning boiler capable of controlling emission of atmospheric pollutant during burning | |
| CN202546811U (en) | Compound furnace arch and compound secondary air structure | |
| CN105299626A (en) | Combustion system and combustion method for retarding slagging and contamination of high-alkali coal boiler for combustion | |
| CN100400962C (en) | Method for reburning nitrogen oxides by coal combustion boiler and apparatus thereof | |
| CN202109471U (en) | Biomass low-nitrogen direct-fired boiler | |
| CN101995015A (en) | Four-corner circle-cutting low Nox (Nitrogen Oxide) combustion technology of direct current burner | |
| CN202141027U (en) | Environment-friendly energy-saving biomass hot pipe boiler | |
| CN105588115B (en) | The low low dirt Large Copacity grate firing boiler of nitrogen low-sulfur and combustion method | |
| CN102679390B (en) | Compound furnace arch and compound secondary air structure for cooperatively controlling generation of nitrogen oxide (NOX) | |
| CN104154532A (en) | Center air ring concentrated type turbulent burner | |
| CN202501451U (en) | Novel swirl hedging boiler | |
| CN205279074U (en) | Low nitrogen powder combustor of slag -tap formula | |
| CN202993174U (en) | Fire coal gas combination type high-efficiency low discharge grate firing device | |
| CN201563591U (en) | Negative-pressure reverse-gasification side-discharging coal-fired baking furnace | |
| CN204756912U (en) | Fluidized bed boiler that high -efficient low NOx discharged | |
| CN204254594U (en) | Biomass energy-saving, low-NO_x emission | |
| CN2534468Y (en) | Vortex furnace arch moving gasification stepping burning bed furnace | |
| CN205383594U (en) | High -efficient low nitrogen low -sulfur low dust large capacity gratefiring boiler | |
| CN201368450Y (en) | Biomass-fired mobile gasification energy-saving boiler | |
| CN205919314U (en) | Double -furnace thorax coal powder gasification low -nitrogen combustion industrial boiler | |
| CN205939677U (en) | Novel energy -conserving high -efficient inclined reciprocating grate living beings granule boiler | |
| CN102588956A (en) | Novel rotational flow impact boiler and manufacturing method thereof | |
| CN201636840U (en) | Negative-pressure reversed two-layer combustion baking oven | |
| CN103335303B (en) | Vertical heater 3 D stereo classification OFA after-flame wind low nitrogen burning technology |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20110323 Termination date: 20180519 |