CN105754623A - Biomass carbonization furnace realizing flue gas recycling and generating little NOx - Google Patents
Biomass carbonization furnace realizing flue gas recycling and generating little NOx Download PDFInfo
- Publication number
- CN105754623A CN105754623A CN201610161073.8A CN201610161073A CN105754623A CN 105754623 A CN105754623 A CN 105754623A CN 201610161073 A CN201610161073 A CN 201610161073A CN 105754623 A CN105754623 A CN 105754623A
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- CN
- China
- Prior art keywords
- burner
- burner wall
- gas recovery
- low nox
- fuel
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- 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.)
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Classifications
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- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10B—DESTRUCTIVE DISTILLATION OF CARBONACEOUS MATERIALS FOR PRODUCTION OF GAS, COKE, TAR, OR SIMILAR MATERIALS
- C10B53/00—Destructive distillation, specially adapted for particular solid raw materials or solid raw materials in special form
- C10B53/02—Destructive distillation, specially adapted for particular solid raw materials or solid raw materials in special form of cellulose-containing material
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10B—DESTRUCTIVE DISTILLATION OF CARBONACEOUS MATERIALS FOR PRODUCTION OF GAS, COKE, TAR, OR SIMILAR MATERIALS
- C10B21/00—Heating of coke ovens with combustible gases
- C10B21/10—Regulating and controlling the combustion
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E50/00—Technologies for the production of fuel of non-fossil origin
- Y02E50/10—Biofuels, e.g. bio-diesel
Abstract
The invention relates to a biomass carbonization furnace realizing flue gas recycling and generating little NOx. The furnace comprises a furnace body, a furnace door, a combustion chamber, a carbonization chamber, a carbonization tank as well as an asymmetric burner, wherein the asymmetric burner comprises a fuel discharge assembly, an air pipeline, a burner wall and an igniter; the fuel discharge assembly comprises a discharge end, a fuel lifting pipe and a flame stabilizing structure; an air channel surrounded by the burner wall penetrates through the burner wall to extend; an outlet end of the air channel is formed in the front end of the burner wall; the flame stabilizing structure is arranged on the first inner side of one side of the axis of the burner wall and arranged at the outlet end of the burner wall; an air pipeline is bent; guide vanes are arranged in the air pipeline and extend to penetrate the second inner side of the burner wall to reach the outlet end. The problems that the temperature of a combustion chamber of an existing carbonization furnace is difficult to control and NOx is easily generated in the combustion process are solved.
Description
Technical field
The present invention relates to retort technical field, particularly relate to a kind of off-gas recovery and utilize low NOx biomass carbonizing furnace.
Background technology
Biomass pyrolytic carbonization technology is because inferior biomass energy can be converted to moisture content is low, calorific value is high high-quality biological matter charcoal by it and is gradually paid close attention to by people.Chinese patent notification number CN202754940U, authorized announcement date is on February 27th, 2013, invention and created name is a kind of pollution-free castoff regenerative retort of self-burning type, that application discloses a kind of biomass carbonizing furnace, this retort includes carbonization chamber, combustor and carbonization tank, and wherein carbonization chamber and combustor both are positioned at body of heater, therebetween separated by baffle plate, carbonization tank is positioned at carbonization chamber, and during work, described carbonization tank is kept sealing by the fire door arranged on it.The present invention utilizes the burner of a kind of low NOx asymmetric as thermal source, easily control in-furnace temperature, while reaching to convert purpose, environment is impacted by the adequacy that improve burning and the generation controlling NOx, and ensure that the compactedness of retort structure.
Summary of the invention
An object of the present invention is for the deficiencies in the prior art part, overcome in the work of existing retort and be difficult to control chamber temperature, and combustion process is easily generated NOx and the not compact problem of retort structure, it is provided that a kind of can improve biomass carbonated efficiency and the off-gas recovery of energy-conserving and environment-protective and compact conformation can utilize low NOx biomass carbonizing furnace again.
A kind of off-gas recovery utilizes low NOx biomass carbonizing furnace, and including body of heater, fire door, combustor, carbonization chamber and carbonization tank, described combustor and carbonization chamber are positioned at furnace interior, are separated by baffle plate；Described baffle plate is provided with smoke inlet；Described carbonization tank is fixed in carbonization chamber, and described carbonization tank is connected to switchable fire door；Described body of heater top is provided with chimney；Also include asymmetric burner；Described asymmetric burner includes fuel and discharges assembly, air line, burner wall, lighter, and described fuel is discharged assembly and included discharging termination, fuel riser, flame stabilization structure；The air flue that described burner wall surrounds extends through burner wall；The front end of described burner wall has the port of export of air flue；Described flame stabilization structure is arranged on inside the first of the side of the axis of burner wall；Described flame stabilization structure is arranged on the port of export place of burner wall；Described air line is set to bending；Being provided with stator in described air line, stator extends through inside the second of burner wall to the port of export；Described burner is connected with chimney by off-gas recovery pipe.
Preferred as one, described fuel riser is longitudinally through air flue, and one end extends to discharge tip, and the other end extends across air line.
Preferred as one, the most advanced and sophisticated outlet 15 millimeters-20 millimeters preferably more than burner wall of described discharge.
Preferred as one, described fuel is discharged tip and is discharged tip for gaseous fuel discharge tip or liquid fuel, it is desirable that most advanced and sophisticated for gaseous fuel discharge.
Preferred as one, described fuel is discharged tip and is discharged most advanced and sophisticated or smooth flame discharge tip for circular flame, it is preferred that circular flame is discharged most advanced and sophisticated.
Preferred as one, described flame stabilization structure is provided with the stable cone of multiple passage, annular equally distributed passage can allow air even into.
Preferred as one, described flame stabilization structure has leading edge, and leading edge contacts with the medial wall of burner wall.
Preferred as one, the diameter of described air flue is D, and the diameter of the outlet of described flame stabilization structure is d, 40%D < d < 50%D, and this ratio is the optimization numerical value drawn in practice.
Preferred as one, described lighter is arranged on axis and discharges the opposite side of assembly relative to fuel, and longitudinally through air flue, one end extends to the port of export, and the other end extends across air line.
Preferred as one, described burner wall is firebrick wall structure.
Preferred as one, the end of described stator is provided with kink, it is possible to make D region better form low pressure.
Preferred as one, the upstream of described stator is provided with baffle plate, for controlling the flow of the combustion air of entirety.
Preferred as another, the downstream of described baffle plate is additionally provided with bias current and controls baffle plate, for regulating the gas flow rate of air flow circuit a, to an optimum state.
Beneficial effects of the present invention:
(1) the invention provides a kind of off-gas recovery and utilize low NOx biomass carbonizing furnace, adopt low NOx asymmetric burner to solve the problem producing NOx in retort work process as thermal source, protect environment.
(2) present invention adopts low NOx asymmetric burner to make to be easily controlled in retort work process the quality of carbonization speed and carbonization product as thermal source.
(3) the invention provides a kind of low NOx asymmetric burner, air line is designed to curved shape, the air velocity of side is more than the air velocity of opposite side, make eccentric burner reach better effect, and this design reduces equipment occupation space and make whole retort structure more compact.
(4) setting of off-gas recovery pipe of the present invention make discharge flue gas be recovered again with, the flue gas of recovery has uniform temperature and can air in burner be preheated, and so can suppress the generation of NOx further.
Accompanying drawing explanation
Technical scheme for the clearer explanation embodiment of the present invention, below the accompanying drawing used required during embodiment is described is briefly described, apparently, drawings discussed below is only some embodiments of the present invention, for those of ordinary skill in the art, under the premise not paying creative work, it is also possible to obtain other accompanying drawings according to these accompanying drawings.
Fig. 1 is the structural representation that a kind of off-gas recovery utilizes low NOx biomass carbonizing furnace.
Fig. 2 is the structure sectional view of a kind of low NOx asymmetric burner.
Fig. 3 is the top view of a kind of low NOx asymmetric burner.
Fig. 4 is the structural representation of a kind of low NOx asymmetric burner stator.
Fig. 5 is the structural representation that a kind of low NOx asymmetric burner fuel discharges assembly.
Fig. 6 changes with air flow circuit a air velocity, the variations in temperature schematic diagram in C region and D region.
Label declaration:
null1. body of heater，2. fire door，3. combustor，4. carbonization chamber，5. carbonization tank，6. division board，7. chimney，8. asymmetric burner，9. off-gas recovery pipe，81. assembly discharged by fuel,82. air line,83. burner wall,84. lighter,85. air flue，86. stator，87. baffle plate，11. bias current controls baffle plate，811. discharge tip，812. fuel riser，813. flame stabilization structure，831. front end，832. the port of export，833. axis，834. inside first，835. inside second，836. medial wall，851. air flue a，852. air flue b，861. end，862. kink，8101. sensor，8131. passage，8132. leading edge，8133. outlet.
Detailed description of the invention
Below in conjunction with accompanying drawing, the technical scheme in the embodiment of the present invention is illustrated clearly and completely.
Embodiment one
Fig. 1 is the structural representation that a kind of off-gas recovery utilizes low NOx biomass carbonizing furnace, Fig. 2 is the structure sectional view of a kind of low NOx asymmetric burner, Fig. 3 is the top view of a kind of low NOx asymmetric burner, Fig. 4 is the structural representation of a kind of low NOx asymmetric burner stator, and Fig. 5 is the structural representation that a kind of low NOx asymmetric burner fuel discharges assembly.As shown in Figure 1, Figure 2, shown in Fig. 3, Fig. 4 and Fig. 5, a kind of off-gas recovery utilizes low NOx biomass carbonizing furnace, and including body of heater 1, fire door 2, combustor 3, carbonization chamber 4 and carbonization tank 5, it is internal that described combustor 3 and carbonization chamber 4 are positioned at body of heater 1, is separated by division board 6；Described division board 6 is provided with smoke inlet 61；Described carbonization tank 5 is fixed in carbonization chamber 4, and described carbonization tank 5 is connected to switchable fire door 2；Described body of heater 1 top is provided with chimney 7；Also include asymmetric burner 8；Described asymmetric burner 8 includes fuel and discharges assembly 81, air line 82, burner wall 83, lighter 84, and described fuel is discharged assembly 81 and included discharging tip 811, fuel riser 812, flame stabilization structure 813；The air flue 85 that described burner wall 83 surrounds extends through burner wall 83；The front end 831 of described burner wall 83 has the port of export 832 of air flue 85；Described flame stabilization structure 813 is arranged on inside the first of the side burner wall 83 of the axis 833 of burner wall 83 834；Described flame stabilization structure 813 is arranged on the port of export 832 place of burner wall 83；Described air line 82 is set to bending；Being provided with stator 86 in described air line 82, stator 86 extends through 835 to the port of export 832 inside the second of burner wall 83；Described burner 8 is connected with chimney 7 by off-gas recovery pipe 9；Described fuel riser 812 is longitudinally through air flue 85, and one end extends to discharge most advanced and sophisticated 811, and the other end extends across air line 82；Described discharge most advanced and sophisticated 811 is less than the port of export 832 (15-25) millimeter of burner wall 83, it is preferable that value is 20 millimeters；Described fuel is discharged most advanced and sophisticated 811 and is discharged tip for gaseous fuel；Described fuel is discharged most advanced and sophisticated 811 and is discharged tip for circular flame；Described flame stabilization structure 813 is provided with the stable cone of multiple passage 8131, annular equally distributed passage 8131 can allow air even into；Described flame stabilization structure 813 has leading edge 8132, and leading edge 8132 contacts with the medial wall 836 of burner wall 83；The diameter of described air flue 85 is D, and the diameter of the outlet 8133 of described flame stabilization structure 813 is d, 40%D < d < 50%D, and this ratio is the optimization numerical value that practice draws；Described lighter 84 is arranged on axis 831 and discharges the opposite side of assembly 81 relative to fuel, and longitudinally through air flue 85, one end extends to the port of export 832, and the other end extends across air line 82；Described burner wall 83 is firebrick wall structure；The end 861 of described stator 86 is provided with kink 862, it is possible to make D region better form low pressure；The upstream of described stator 86 is provided with baffle plate 87, for controlling the flow of the combustion air of entirety；The downstream of described baffle plate 87 is additionally provided with bias current and controls baffle plate 810, transmits information by sensor 8101 and regulates the gas flow rate of air flow circuit a851, to an optimum state, as shown in Figure 4, is best at about v1, more uniform temperature.
During work, combustion air is in the entrance air line 82 that baffle plate 87 is appropriate, air flue 85 is divided into air flue a851 and air flue b852 by stator 6, the air flowing of air flue b852 is shallower, air flow through air flue b852 enter burner wall 83 first inside 834, then discharge through the passage 8131 of flame stabilization structure 813 and discharge, with fuel, the fuel mixed combustion discharged in most advanced and sophisticated 811, the amount measuring relative fuel of air is few herein, enriched combustion region is formed in C region, the temperature of fuel is relatively low, unnecessary fuel mixes reduce temperature with burning inert products；The air of air flue a851 because of the factors such as centrifugal force to affect flow velocity very fast, when the port of export 832 is discharged, the D region after the end 861 of stator 86 forms a low-pressure area, the bending part 862 that end 861 place is arranged can make D region 10 better form low-pressure area, and bias current controls baffle plate 11 can further control the flow velocity of gas in air flow circuit a851；The mixing gas in C region 9 circulates around the flow direction at this, the low-pressure state in D region makes the gaseous mixture direction of flow D region in C region, mixing gas has been carried out supplementing of oxygen by the air that air flue b852 discharges, mixing gas is made to burn away, fuel content forms lean burn district less, temperature will not be significantly high so that NOx is difficult to be formed；The port of export 832 of asymmetric burner 8 communicates with combustor 3；The flue gas that carbonization chamber 4 is discharged passes in the air flue 85 of burner 8 through off-gas recovery pipe 9, and air plays pre-heat effect, suppresses NOx to generate further.
The above; being only the present invention preferably detailed description of the invention, but protection scope of the present invention is not limited thereto, any those familiar with the art is in the technical scope that the invention discloses; the change that can readily occur in or replacement, all should be encompassed within protection scope of the present invention.Therefore, protection scope of the present invention should be as the criterion with the protection domain of claims.
Claims (10)
1. an off-gas recovery utilizes low NOx biomass carbonizing furnace, including body of heater (1), fire door (2), combustor (3), carbonization chamber (4) and carbonization tank (5), it is internal that described combustor (3) and carbonization chamber (4) are positioned at body of heater (1), is separated by division board (6)；Described division board (6) is provided with smoke inlet (61)；Described carbonization tank (5) is fixed in carbonization chamber (4), and described carbonization tank (5) is connected to switchable fire door (2)；Described body of heater (1) top is provided with chimney (7)；It is characterized in that: also include asymmetric burner (8)；Described asymmetric burner (8) includes fuel and discharges assembly (81), air line (82), burner wall (83), lighter (84), and described fuel is discharged assembly (81) and included discharging termination (811), fuel riser (812), flame stabilization structure (813)；The air flue (85) that described burner wall (83) surrounds extends through burner wall (83)；The front end (831) of described burner wall (83) has the port of export (832) of air flue (85)；Described flame stabilization structure (813) is arranged on inside the first of the side of the axis (833) of burner wall (83) (834)；Described flame stabilization structure (813) is arranged on the port of export (832) place of burner wall (83)；Described air line (82) is set to bending；Being provided with stator (86) in described air line (82), stator (86) extends through (835) to the port of export (832) inside the second of burner wall (83)；Described burner (8) is connected with chimney (7) by off-gas recovery pipe (9).
2. a kind of off-gas recovery utilizes low NOx biomass carbonizing furnace as claimed in claim 1, it is characterized in that, described fuel riser (812) is longitudinally through air flue (85), one end extends to discharge termination (811), and the other end extends across air line (82).
3. a kind of off-gas recovery utilizes low NOx biomass carbonizing furnace as claimed in claim 1, it is characterised in that described discharge termination (811) is less than the port of export (832) 15 millimeters-25 millimeters of burner wall (83).
4. a kind of off-gas recovery utilizes low NOx biomass carbonizing furnace as claimed in claim 1, it is characterised in that described fuel discharging end head (811) discharges tip for gaseous fuel.
5. a kind of off-gas recovery utilizes low NOx biomass carbonizing furnace as claimed in claim 1, it is characterised in that described flame stabilization structure (813) is provided with the stable cone of multiple passage (8131).
6. a kind of off-gas recovery utilizes low NOx biomass carbonizing furnace as claimed in claim 1, it is characterized in that, described flame stabilization structure (813) has leading edge (8132), and leading edge (8132) contacts with the medial wall (836) of burner wall (83).
7. a kind of off-gas recovery utilizes low NOx biomass carbonizing furnace as claimed in claim 1, it is characterized in that, the diameter of described air flue (85) is D, the diameter of the outlet (133) of described flame stabilization structure (813) is d, 40%D < d < 50%D.
8. a kind of off-gas recovery as claimed in claim 1 utilizes low NOx biomass carbonizing furnace, it is characterized in that, described lighter (84) is arranged on axis (831) and discharges the opposite side of assembly (81) relative to fuel, longitudinally through air flue (85), one end extends to the port of export (832), and the other end extends across air line (82).
9. a kind of off-gas recovery as claimed in claim 1 utilizes low NOx biomass carbonizing furnace, it is characterised in that the end (861) of described stator (86) is provided with kink (862).
10. a kind of off-gas recovery as claimed in claim 1 utilizes low NOx biomass carbonizing furnace, it is characterised in that the upstream of described stator (86) is provided with baffle plate (87), for controlling the flow of the combustion air of entirety.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610161073.8A CN105754623B (en) | 2016-03-21 | 2016-03-21 | A kind of off-gas recovery utilizes low NOx biomass carbonizing furnaces |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610161073.8A CN105754623B (en) | 2016-03-21 | 2016-03-21 | A kind of off-gas recovery utilizes low NOx biomass carbonizing furnaces |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN105754623A true CN105754623A (en) | 2016-07-13 |
| CN105754623B CN105754623B (en) | 2018-11-06 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610161073.8A Expired - Fee Related CN105754623B (en) | 2016-03-21 | 2016-03-21 | A kind of off-gas recovery utilizes low NOx biomass carbonizing furnaces |
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Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2002294247A (en) * | 2001-03-28 | 2002-10-09 | Takeo Hirahara | Carbonization furnace |
| CN101713540A (en) * | 2008-10-01 | 2010-05-26 | 通用电气公司 | Off center combustor liner |
| CN203451464U (en) * | 2013-08-12 | 2014-02-26 | 湖州宜可欧环保科技有限公司 | Biomass carbonization furnace |
| CN205556563U (en) * | 2016-03-21 | 2016-09-07 | 长兴金诺机械有限公司 | Flue gas recycle hangs down NOx living beings retort |
-
2016
- 2016-03-21 CN CN201610161073.8A patent/CN105754623B/en not_active Expired - Fee Related
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2002294247A (en) * | 2001-03-28 | 2002-10-09 | Takeo Hirahara | Carbonization furnace |
| CN101713540A (en) * | 2008-10-01 | 2010-05-26 | 通用电气公司 | Off center combustor liner |
| CN203451464U (en) * | 2013-08-12 | 2014-02-26 | 湖州宜可欧环保科技有限公司 | Biomass carbonization furnace |
| CN205556563U (en) * | 2016-03-21 | 2016-09-07 | 长兴金诺机械有限公司 | Flue gas recycle hangs down NOx living beings retort |
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| Publication number | Publication date |
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| CN105754623B (en) | 2018-11-06 |
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Effective date of registration: 20180921 Address after: 362800 206 Keng Tsai Village, Keng Tsai Village, Hou Long Town, Quangang District, Quanzhou, Fujian Applicant after: Chen Minghai Address before: 313113 Chu Kang village, two boundary Ling Township, Changxing County, Huzhou, Zhejiang Applicant before: CHANGXING JINNUO MACHINERY CO., LTD. |
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