CN104949122A - Oxygen-enriched gas pulsating combustion device - Google Patents
Oxygen-enriched gas pulsating combustion device Download PDFInfo
- Publication number
- CN104949122A CN104949122A CN201510323513.0A CN201510323513A CN104949122A CN 104949122 A CN104949122 A CN 104949122A CN 201510323513 A CN201510323513 A CN 201510323513A CN 104949122 A CN104949122 A CN 104949122A
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- burner
- gas
- mixing chamber
- flue
- dust
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23D—BURNERS
- F23D14/00—Burners for combustion of a gas, e.g. of a gas stored under pressure as a liquid
- F23D14/02—Premix gas burners, i.e. in which gaseous fuel is mixed with combustion air upstream of the combustion zone
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23D—BURNERS
- F23D14/00—Burners for combustion of a gas, e.g. of a gas stored under pressure as a liquid
- F23D14/46—Details, e.g. noise reduction means
-
- 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
- Y02E20/00—Combustion technologies with mitigation potential
- Y02E20/34—Indirect CO2mitigation, i.e. by acting on non CO2directly related matters of the process, e.g. pre-heating or heat recovery
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Fluidized-Bed Combustion And Resonant Combustion (AREA)
Abstract
The invention belongs to the technical field of gas utilization and relates to an oxygen-enriched gas pulsating combustion device. The oxygen-enriched gas pulsating combustion device is characterized in that a Rijke type burner is adopted, a downlink type combustion ash-collecting mode is adopted; that is to say, a straight tube type burner with the closed upper end and the open lower end is adopted; and an air inlet device is arranged at the top end and connected with a mixing chamber through an air inlet valve. A mode of feeding from the top and downlink combustion is adopted, so that fuel is evenly mixed by means of gravity; after the combustion, powder enters a dust collecting bag through an ash discharging hopper, tail gas is purified and cooled through a tail gas pipe, tail gas dust is collected and treated, and the oxygen-enriched gas pulsating combustion device is simple in structure, avoids dust accumulation in the burner and is free of maintenance.
Description
Technical field
The invention belongs to gas utilization technical field, be specifically related to a kind of oxygen enrichment methane gas pulse combustion device.
Background technology
2014, China's coal-mine gas pumping amount reached 116 billion cubic meters, and the mine implementing coal mine gas drainage only accounts for 30% of national mine sum.Generally speaking, the gas majority of methane concentration more than 30% can be used as domestic gas for resident living, but in actual production, the mine mash gas extraction of more than 80% belongs to the oxygen enrichment methane gas of methane concentration below 30%, cannot directly use as domestic gas.In the utilizing of oxygen enrichment gas, methane concentration be 7% ~ 30% part internal combustion engine gas power generation technology can be utilized at present to generate electricity, the part of methane concentration less than 7% cannot utilize because methane concentration is too low has to be diffused, and makes the gas practical efficiency of mine institute extraction only have 33%.Meanwhile, annual also have the mine ventilation gas of methane concentration below 0.5% of about 150 billion cubic meters to be directly discharged in air, the technology that utilizes at present for this part mine ventilation gas is that the oxidation of weary wind utilizes technology, but this technological investment is large, profitability is weak and lack commercial application value.
Therefore, every year the nearly methane concentration of billion cubic meter more than 200 0 ~ 7% coal mine gas diffused, cause ample resources waste and Heavy environmental pollution (greenhouse effects of methane to air are 25 times of carbon dioxide).Need low cost, the technology of efficiency utilization solves mine oxygen enrichment methane gas problem of complex utilization.
Summary of the invention
The object of the invention is to overcome above-mentioned deficiency, one is provided to utilize colliery oxygen enrichment methane gas as oxygen-fed gas, methane wherein and fuel oil or coal dust are blended in Thorough combustion in pulsating combusting device and produce the device that high temperature and high pressure steam comes heat supply or generating, realize the zero-emission of coal mine gas.
The technical solution adopted for the present invention to solve the technical problems is: a kind of oxygen enrichment methane gas pulse combustion device, comprises inlet duct 1, fuel charging means 2, fuel charge controller 3, intake valve 4, mixing chamber 5, igniter 6, intermittent combustion room 7, tail pipe 8, flue gas decoupling chamber 9, offgas duct 10, flue-dust retainer 11, dust collection bag 12 and steam boiler 13, is characterized in that, this device adopts Rieke type burner, downstriker burning collection grey pattern, i.e. upper end closed, the straight pipe type burner of lower ending opening, described burner comprises mixing chamber 5, igniter 6, intermittent combustion room 7 and tail pipe 8, inlet duct 1 is located at top, be connected with mixing chamber 5 by intake valve 4, the side of mixing chamber 5 is provided with fuel charging means 2 and fuel charge controller 3, bottom, intermittent combustion room 7 is tail pipe 8, and end connects flue gas decoupling chamber 9, and flue gas decoupling chamber 9 is provided with offgas duct 10 and flue-dust retainer 11, flue-dust retainer 11 is provided with dust collection bag 12 below, and steam boiler 13 and burner temperature the highest section of intermittent combustion room 7 are combined as a whole.
Described intake valve 4 can be freely up and down movable, utilizes inlet duct 1 to move up and down with the pressure official post spool of intermittent combustion room 7 valve realizing the autonomous air inlet of burner.
Described burner adopts Rieke type burner, and be the principle work based on quarter-wave resonance pipe acoustically, the straight tube that 1/4th pulsating combusting devices are closed by one end open, the other end forms.The part adjacent with blind end is called mixing chamber 5, at blind end, fuel charge controller 3 and the oxygen enrichment methane gas intake valve 4 for burning is housed.When the supply pressure of the pressure in burner lower than oxygen enrichment methane gas or fuel, intake valve 4 is opened automatically, and fresh oxygen enrichment methane gas enters mixing chamber 5 by intake valve 4 and after igniter 6 is lighted a fire, enters intermittent combustion room 7 with the fuel mix added again.When the supply pressure of the pressure in burner higher than oxygen enrichment methane gas, intake valve 4 cuts out automatically, and the combustion gas in burner can not be flow backwards by intake valve 4.
Beneficial effect of the present invention: adopt from upper pan feeding, the mode of flow-down burning, be conducive to like this utilizing gravity Homogeneous phase mixing fuel, after burning, dust enters dust collection bag through ash bucket, tail gas is through offgas duct purification cooling, and realize tail gas dust and collect process, structure is simple, avoid dust accumulation in burner, non-maintaining.
Below in conjunction with drawings and Examples, the invention will be further described.
Accompanying drawing explanation
Fig. 1 is the structural representation of a kind of oxygen enrichment methane gas of the present invention pulse combustion device.
In figure: 1, inlet duct, 2, fuel charging means, 3, fuel charge controller, 4, intake valve, 5, mixing chamber, 6, igniter, 7, intermittent combustion room, 8, tail pipe, 9, flue gas decoupling chamber, 10, offgas duct, 11, flue-dust retainer, 12, dust collection bag, 13, steam boiler.
Detailed description of the invention
See Fig. 1, a kind of oxygen enrichment methane gas pulse combustion device that the present invention proposes, comprises inlet duct 1, fuel charging means 2, fuel charge controller 3, intake valve 4, mixing chamber 5, igniter 6, intermittent combustion room 7, tail pipe 8, flue gas decoupling chamber 9, offgas duct 10, flue-dust retainer 11, dust collection bag 12 and steam boiler 13, is characterized in that, this device adopts Rieke type burner, downstriker burning collection grey pattern, i.e. upper end closed, the straight pipe type burner of lower ending opening, described burner comprises mixing chamber 5, igniter 6, intermittent combustion room 7 and tail pipe 8, inlet duct 1 is located at top, be connected with mixing chamber 5 by intake valve 4, the side of mixing chamber 5 is provided with fuel charging means 2 and fuel charge controller 3, bottom, intermittent combustion room 7 is tail pipe 8, and end connects flue gas decoupling chamber 9, and flue gas decoupling chamber 9 is provided with offgas duct 10 and flue-dust retainer 11, flue-dust retainer 11 is provided with dust collection bag 12 below, and steam boiler 13 and burner temperature the highest section of intermittent combustion room 7 are combined as a whole.
Described intake valve 4 can be freely up and down movable, utilizes inlet duct 1 to move up and down with the pressure official post spool of intermittent combustion room 7 valve realizing the autonomous air inlet of burner.
The ventilating gas in colliery mixes with lower part mine gas (30% has had other effective Land use systems with upper part) 30% with the methane that colliery drainage system is released under the control of wind channel at automated gas divider, it is made to be 30 ~ 120kpa at pressure, methane concentration controls below 4%, oxygen concentration controls more than 16%, is made into oxygen enrichment methane gas; If do not need low concentration gas extraction gas to be processed can directly utilize mine ventilation gas gas as oxygen enrichment methane gas yet.
When device static state starts, the spool of intake valve 4 falls under gravity, and valve is in opening, and oxygen enrichment methane gas enters mixing chamber 5.
Fuel charge controller 3, according to the concentration of methane, oxygen in oxygen enrichment methane gas, enters mixing chamber 5 by the fuel combination concentration control interpolation fuel oil set or coal dust.
The fuel mixed, in descending process, is lighted a fire by igniter 6, and fuel burns in intermittent combustion room 7, temperature and pressure in burner starts to raise, and expand in combustion zone, combustion product is discharged to two ends, now, intake valve 4 spool is by jack-up, and valve is in closed condition; Due to the inertia of air-flow, make in burner below pressure drop to atmospheric pressure, form negative pressure; Under the gravity acting in conjunction of burner negative pressure and spool, intake valve 4 spool falls, and oxygen enrichment methane gas and fuel enter mixing chamber 5 automatically; With this simultaneously, combustion product in tail pipe 8 also returns to intermittent combustion room 7, makes its pressure raise and compress, the oxygen enrichment methane gas newly entered is mixed rapidly with fuel under the effect of reflux gas, rekindled by the high-temperature gas returned and enter next circulation, form stable intermittent combustion.
Utilizing the advantage that intermittent combustion efficiency is high, intensity is large, the thermal efficiency is high, heat transfer coefficient is large, intermittent combustion room 7 and part tail pipe 8 are designed to one with steam boiler 13, is that high temperature and high pressure steam is for utilizing by the thermal power transfer that burner produces.
The combustion product of intermittent combustion room 7 enters flue gas decoupling chamber 9 by tail pipe 8, flue gas decoupling chamber 9 is designed to a large space controlling pressure at expulsion by offgas duct 10, thus control noises, tail gas and dust emission, and impact is implemented on key elements such as the frequencies of intermittent combustion.
Claims (2)
1. an oxygen enrichment methane gas pulse combustion device, comprises inlet duct (1), fuel charging means (2), fuel charge controller (3), intake valve (4), mixing chamber (5), igniter (6), intermittent combustion room (7), tail pipe (8), flue gas decoupling chamber (9), offgas duct (10), flue-dust retainer (11), dust collection bag (12) and steam boiler (13), is characterized in that, this device adopts Rieke type burner, downstriker burning collection grey pattern, i.e. upper end closed, the straight pipe type burner of lower ending opening, described burner comprises mixing chamber (5), igniter (6), intermittent combustion room (7) and tail pipe (8), inlet duct (1) is located at top, be connected with mixing chamber (5) by intake valve (4), the side of mixing chamber (5) is provided with fuel charging means (2) and fuel charge controller (3), intermittent combustion room (7) bottom is tail pipe (8), end connects flue gas decoupling chamber (9), flue gas decoupling chamber (9) is provided with offgas duct (10) and flue-dust retainer (11), flue-dust retainer (11) is provided with dust collection bag (12) below, and steam boiler (13) and burner temperature the highest section of intermittent combustion room (7) are combined as a whole.
2. a kind of oxygen enrichment methane gas pulse combustion device according to claim 1, it is characterized in that, described intake valve (4) can be freely up and down movable, utilizes inlet duct (1) to move up and down with the pressure official post spool of intermittent combustion room (7) valve realizing the autonomous air inlet of burner.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201510323513.0A CN104949122A (en) | 2015-06-12 | 2015-06-12 | Oxygen-enriched gas pulsating combustion device |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201510323513.0A CN104949122A (en) | 2015-06-12 | 2015-06-12 | Oxygen-enriched gas pulsating combustion device |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2017147805A1 (en) * | 2016-03-02 | 2017-09-08 | 马骏 | Highly interference resistant pulse combustion device |
| CN107489468A (en) * | 2017-09-18 | 2017-12-19 | 贵州盘江煤层气开发利用有限责任公司 | A kind of low-concentration gas power generation system based on intermittent combustion |
| CN107859995A (en) * | 2017-12-08 | 2018-03-30 | 山西大学 | A kind of Rijke type pulse combustion systems for coal-burning boiler |
| CN109915829A (en) * | 2019-03-20 | 2019-06-21 | 中国矿业大学 | A kind of low concentration gas pulsating combusting device with stable flame pan structure |
| CN109945187A (en) * | 2019-03-20 | 2019-06-28 | 中国矿业大学 | A kind of low concentration gas pulsating combusting device with canalis pterygoideus |
| CN109945189A (en) * | 2019-03-20 | 2019-06-28 | 中国矿业大学 | A kind of low concentration gas pulsating combusting device improving supervisor |
| CN110107899A (en) * | 2019-03-19 | 2019-08-09 | 中国矿业大学 | Low concentration gas pulsating combusting device and its method with flame holder structure |
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| CN101344249A (en) * | 2008-07-21 | 2009-01-14 | 哈尔滨工业大学 | Valveless gas fluctuation combustor |
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| CN102679541A (en) * | 2012-06-05 | 2012-09-19 | 农业部规划设计研究院 | Biomass fuel pulse combustion hot blast device and use method thereof |
| CN103343962A (en) * | 2013-06-04 | 2013-10-09 | 天津科技大学 | Rick type pulsating combustor with revolving bed |
| CN103438451A (en) * | 2013-09-11 | 2013-12-11 | 哈尔滨工业大学 | Tuning valveless fuel gas pulse combustor |
| CN204704816U (en) * | 2015-06-12 | 2015-10-14 | 贵州盘江煤层气开发利用有限责任公司 | A kind of oxygen enrichment methane gas pulse combustion device |
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2015
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| WO1994014002A1 (en) * | 1992-12-04 | 1994-06-23 | Valtion Teknillinen Tutkimuskeskus | Pulse combustion boiler |
| CN1144897A (en) * | 1995-04-01 | 1997-03-12 | 浙江工业大学 | Variable section Rieke type acoustic vibration burner |
| CN1740635A (en) * | 2005-09-22 | 2006-03-01 | 浙江大学 | Pulsating fluid-bed combustion apparatus |
| CN101344249A (en) * | 2008-07-21 | 2009-01-14 | 哈尔滨工业大学 | Valveless gas fluctuation combustor |
| CN101493229A (en) * | 2009-01-15 | 2009-07-29 | 哈尔滨工业大学 | Control method for multiple tail tube pulsating combustor and apparatus |
| CN101700437A (en) * | 2009-12-11 | 2010-05-05 | 山东天力干燥设备有限公司 | Pulsation combustion foam spray drying device and process |
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| CN103343962A (en) * | 2013-06-04 | 2013-10-09 | 天津科技大学 | Rick type pulsating combustor with revolving bed |
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Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2017147805A1 (en) * | 2016-03-02 | 2017-09-08 | 马骏 | Highly interference resistant pulse combustion device |
| CN107489468A (en) * | 2017-09-18 | 2017-12-19 | 贵州盘江煤层气开发利用有限责任公司 | A kind of low-concentration gas power generation system based on intermittent combustion |
| CN107859995A (en) * | 2017-12-08 | 2018-03-30 | 山西大学 | A kind of Rijke type pulse combustion systems for coal-burning boiler |
| CN107859995B (en) * | 2017-12-08 | 2024-03-12 | 山西大学 | Rijke type pulse combustion system for coal-fired boiler |
| CN110107899A (en) * | 2019-03-19 | 2019-08-09 | 中国矿业大学 | Low concentration gas pulsating combusting device and its method with flame holder structure |
| CN110107899B (en) * | 2019-03-19 | 2023-09-29 | 中国矿业大学 | Low-concentration gas pulse combustor with flame stabilizer structure and method thereof |
| CN109915829A (en) * | 2019-03-20 | 2019-06-21 | 中国矿业大学 | A kind of low concentration gas pulsating combusting device with stable flame pan structure |
| CN109945187A (en) * | 2019-03-20 | 2019-06-28 | 中国矿业大学 | A kind of low concentration gas pulsating combusting device with canalis pterygoideus |
| CN109945189A (en) * | 2019-03-20 | 2019-06-28 | 中国矿业大学 | A kind of low concentration gas pulsating combusting device improving supervisor |
| CN109915829B (en) * | 2019-03-20 | 2023-09-05 | 中国矿业大学 | Low-concentration gas pulsation burner with flame stabilizing disc structure |
| CN109945189B (en) * | 2019-03-20 | 2023-09-05 | 中国矿业大学 | Low-concentration gas pulsation burner with improved main pipe |
| CN109945187B (en) * | 2019-03-20 | 2023-09-29 | 中国矿业大学 | Low-concentration gas pulsation burner with wing pipes |
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Application publication date: 20150930 |