CN202040828U - Biomass fuel two-stage material plug spiral positive-pressure continuous feeding device - Google Patents
Biomass fuel two-stage material plug spiral positive-pressure continuous feeding device Download PDFInfo
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- CN202040828U CN202040828U CN201120140199XU CN201120140199U CN202040828U CN 202040828 U CN202040828 U CN 202040828U CN 201120140199X U CN201120140199X U CN 201120140199XU CN 201120140199 U CN201120140199 U CN 201120140199U CN 202040828 U CN202040828 U CN 202040828U
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Abstract
The utility model discloses a biomass fuel two-stage material plug spiral positive-pressure continuous feeding device which aims at solving the defects that the feeding device of a biomass boiler or a gasification furnace is easy to block, continuous positive-pressure feeding can not be realized, fire is easy to occur, the failure rate of equipment is high and the like. The device is mainly formed by connecting a first-stage spiral feeding machine, a vertical cylinder and a second-stage spiral feeding machine in series, wherein a feed port at the upper end of the vertical cylinder is connected with the output end of the first-stage spiral feeding machine, a discharge port at the lower end of the vertical cylinder is connected with the input end of the second-stage spiral feeding machine and the output end of the second-stage spiral feeding machine is connected with a feed port of a furnace chamber of the biomass fuel boiler or the gasification furnace. Further, a fire-fighting medium spraying joint is arranged on the cylinder wall of the vertical cylinder. The device is conductive to stabilizing and regulating the temperature of the furnace chamber of the biomass boiler or the gasification furnace, improving the load stability, ensuring the safety of burning of the furnace chamber, and prolonging the continuous operation time of the boiler and the gasification furnace thus reducing the fire risk to the lowest level.
Description
Technical field
The utility model relates to the charging gear of biomass fuel boiler or gasification furnace, refers to a kind of biomass fuel two-stage material plug spiral malleation continuous-feeding device particularly.
Background technology
Along with society growing to energy demand, as the fossil fuel in main energy sources source but in rapid minimizing.Therefore, seek the focus that reproducible alternative energy source has become social common concern.Biomass fuel direct combustion power generation in boiler is a kind of common technology that living beings are utilized, and the technology that another kind has more commercial promise is that biomass fuel is gasified, and the fuel gas that is produced is used for gas turbine power generation or is used for chemical industry synthetic engine fuel etc.Biomass fuel commonly used mainly contains various agricultural wastes (as rice husk, cotton stalk, rice straw, rape stalk and cornstalk etc.) and forestry waste (as branch bavin, timber leftover pieces, tree root etc.), because it has variation, size is irregular, density is low, water content is high, easily catch fire, easily stop up characteristics such as feed circuit, make people in the charging gear design of biomass fuel, must give enough attention aspect raising conveying continuity and the security.
At present, in traditional biomass fuel boiler, its charging gear generally adopts the negative pressure feed-type: control furnace pressure or improve the material inlet absolute altitude, and the position that makes biomass fuel send into burner hearth is a negative pressure region, thereby to avoid the breaking out of fire in the charging gear of burner hearth high-temperature flue gas anti-channeling.Yet in actual engineering, owing to feed fluctuation and furnace pressure fluctuate flue gas anti-channeling accident takes place through regular meeting.In addition, the charging gear that also has adopts special-purpose feed pipe technology, with high-pressure blast biomass fuel is sent into the barotropic field of burner hearth, stops up the accident that feed pipe, wind-force can't effectively be dredged but fuel often takes place.No matter this shows, be to adopt the negative pressure charging gear or adopt the malleation feed pipe, even passively taked the fire extinguishing measure, can not fundamentally solve the fire risk of charging gear, reliably continuous-feeding.
In traditional biomass fuel gasifying stove, following two kinds of malleation feed-types are generally arranged: the one, adopt hydraulic pressure or air-leg that biomass fuel is pushed the malleation burner hearth from bottom, as-fired fuel storehouse through the horizontal channel, Bunker charges into steam or gas to keep certain air pressure, prevents that the gasification furnace high-temperature fuel gas from entering Bunker.The 2nd, the as-fired fuel storehouse is imported and exported a sealed valve respectively is set, and also adopts steam or gas to increase pressure in the Bunker, and its workflow is as follows: open the inlet valve charging, close inlet valve supercharging (adding compression air or inert gas etc.) then; Open the bleeder valve discharging, close bleeder valve then, open the inlet valve charging again, and so forth.Adopt said structure, equipment and valve frequent start-stop, fault rate are higher.At first, biomass fuel energy bulk density is low, and the pressurization gas amount is bigger with respect to fuel energy, and a large amount of compressed air or inert gas enter gasification furnace, can influence gasification furnace and normally gasify, and reduce gasification efficiency, thereby reduces fuel gases calorific value.Secondly, owing to be to be interrupted feed, cause fuel quantity and air capacity short-term not to match, gasification result off-design target.In addition, biomass fuel shape irregular also easily at Bunker import and export blocking channel, or be bonded on the conduit wall, influence valve closing, cause function of increasing pressure to lose efficacy.
Summary of the invention
When the utility model is intended to solve boiler and gasification furnace burning-used biologic mass fuel charging gear stop up easily, malleation feed, easily breaking out of fire accident, the high defective of equipment failure rate continuously, provide a kind of and help stable and regulate fire box temperature, guarantee the burner hearth combustion completion, prolonged boiler and gasification furnace continuous operating time, improve the biomass fuel two-stage material plug spiral malleation continuous-feeding device of its steady load.
For achieving the above object, the biomass fuel two-stage material plug spiral malleation continuous-feeding device that the utility model is designed, comprise first order screw(-type) feeder and second level screw(-type) feeder, also comprise the upright tube that is arranged between described first order screw(-type) feeder and the second level screw(-type) feeder, the upper end charging aperture of described upright tube links to each other with the output of described first order screw(-type) feeder, the lower end discharging opening of described upright tube links to each other with the input of described second level screw(-type) feeder, and the output of described second level screw(-type) feeder links to each other with the feeding mouth of the burner hearth of biomass fuel boiler or gasification furnace.
Operation principle of the present utility model is as follows: the biomass fuel that is come by the miscellaneous equipment conveying at first enters first order screw(-type) feeder, under the extruding progradation of first order screw(-type) feeder, fuel enters upright tube upper end from the output of first order screw(-type) feeder, through after the movement of falling object, send into the screw(-type) feeder of the second level from the lower end of upright tube, again under the extruding progradation of second level screw(-type) feeder, enter in the burner hearth of biomass fuel boiler or gasification furnace by the output of second level screw(-type) feeder.
In said process, fuel can form first order material plug and second level material plug at the output of first order screw(-type) feeder and the output of second level screw(-type) feeder.The material plug is meant the high density plug shaped article that is subjected to the helical blade extruding in biomass fuel or the slype of other compressible material after the screw(-type) feeder outlet and forms, it has the ability that certain barrier gas is passed through, and the density of material plug can realize by the diameter and the length of adjustable screw batcher outlet back slype.
The utility model is mainly filled in the high temperature that bears in the burner hearth by second level material, and stops the malleation combustion gas anti-channeling in the burner hearth, and first order material plug then plays a part dual fail-safe, can stop the malleation combustion gas and enter into the charging gear front end.Particularly, when stopping the shortage of feed or feed, second level material plug failure phenomenon may take place, cause in the extremely upright tube of malleation combustion gas anti-channeling in the burner hearth, but because the air in the upright tube is limited, depleted substantially when the malleation combustion gas rises to first order material plug place in upright tube, so can not break through first order material plug in a short time.
Because first order screw(-type) feeder and second level screw(-type) feeder arranged in series, and be formed with two-stage material plug, so fuel requirement just can be delivered in the burner hearth through behind the two-step supercharging, can make the Safety Operation Pressure of biomass fuel boiler or gasification furnace be able to further raising.Under same furnace pressure situation, the material plug differential pressure of every grade of screw(-type) feeder in the utility model is more much lower than the material plug differential pressure of an independent screw(-type) feeder, thereby can further improve the reliability of material plug sealing.
Further, in the utility model, also be provided with fire-fighting medium injection joint on the barrel of described upright tube, described fire-fighting medium injection joint is preferably disposed on the top of upright tube.Like this, even the malleation combustion gas in the burner hearth breaks through second level material plug anti-channeling to upright tube, also can in time in upright tube, spray into fire-fighting gas or liquid, thereby fire risk is eliminated in original state.
Further, the perpendicular bisector of described upright tube and the angle of horizontal plane are controlled in 70～90 ° the scope, descend smoothly in upright tube to guarantee biomass fuel, prevent the fuel obstruction, guarantee that feed carries out continuously.
The utility model efficiently solves the engineering difficult problem when biomass boiler or the continuous malleation conveying of gasification furnace biomass fuel, has eliminated flue gas and combustion gas and has returned the potential safety hazard of scurrying, and fire risk has been reduced to minimum.Its beneficial effect is mainly reflected in following several respects:
One, can satisfy biomass fuel boiler or gasification furnace continuously, the requirement of malleation, safety supply biomass fuel, improved its steady load, prolonged boiler and gasification furnace time of operation continuously.
Its two, avoided the frequent start-stop of equipment and valve in the conventional charging gear, effectively reduce the fault rate of equipment and valve.
Its three, avoided a large amount of anergy gases to enter burner hearth, effectively improved the thermal efficiency of biomass fuel boiler or gasification furnace, particularly significantly improved the gasification efficiency and the combustion gas quality of gasification furnace.
Description of drawings
Fig. 1 is a kind of structural representation of biomass fuel two-stage material plug spiral malleation continuous-feeding device.
The specific embodiment
Below in conjunction with the drawings and specific embodiments the utility model is described in further detail.
Biomass fuel two-stage material plug spiral malleation continuous-feeding device shown in the figure mainly is in series by first order screw(-type) feeder 1, upright tube 2 and second level screw(-type) feeder 3.First order screw(-type) feeder 1 and second level screw(-type) feeder 3 can adopt screw conveyor shaft, also can adopt Shaftless screw conveyor.When concrete the layout, the helical blade axis of above-mentioned first order screw(-type) feeder 1 and second level screw(-type) feeder 3 and the angle of horizontal plane are smaller or equal to 20 °, help the biomass fuel level so on the one hand and advance, can guarantee that on the other hand output at first order screw(-type) feeder 1 forms stable first order material plug 6, forms stable second level material plug 7 at the output of second level screw(-type) feeder 3.
The upper end charging aperture of above-mentioned upright tube 2 links to each other with the output of first order screw(-type) feeder 1, the lower end discharging opening of upright tube 2 links to each other with the input of second level screw(-type) feeder 3, and the output of second level screw(-type) feeder 3 then links to each other with the feeding mouth of the burner hearth 4 of biomass fuel boiler or gasification furnace.Barrel top at upright tube 2 is provided with fire-fighting medium injection joint 5, can spray fire-fighting gas when needed in upright tube 2.
Above-mentioned upright tube 2 comes down to the fuel transition passage.During specific design, upright tube 2 can be selected bigbore cylindrical drum for use, and the diameter of this cylindrical drum is 500～800mm; Upright tube 2 also can be selected up big and down small circular cone tube for use, and the upper end diameter of this circular cone tube is that 600～1000mm, lower end diameter are 500～800mm.Its bigger design bore helps that fuel is smooth and easy to be passed through.Pile up obstruction in order to stop fuel in upright tube 2, upright tube 2 should guarantee that when mounted the angle of its perpendicular bisector and horizontal plane is 70～90 °, and the movement of falling object of fuel in upright tube 2 is interrupted hardly like this, thereby guarantees the stability and the continuity of feed.
During the utility model work, start second level screw(-type) feeder 3 earlier, restart first order screw(-type) feeder 1.After two batcher stable operation, can form the first order material plug 6 and second level material plug 7 at the output of two batchers respectively, can effectively stop flue gas or combustion gas to be returned and scurry, prevent that fire from taking place.When needs stop feed, stop first order screw(-type) feeder 1 earlier, stop second level screw(-type) feeder 3 again.When upright tube 2 or second level screw(-type) feeder 3 generation fuel obstruction accidents, must stop first order screw(-type) feeder 1 immediately.
Claims (10)
1. biomass fuel two-stage material plug spiral malleation continuous-feeding device, comprise first order screw(-type) feeder (1) and second level screw(-type) feeder (3), it is characterized in that: it also comprises the upright tube (2) that is arranged between described first order screw(-type) feeder (1) and the second level screw(-type) feeder (3), the upper end charging aperture of described upright tube (2) links to each other with the output of described first order screw(-type) feeder (1), the lower end discharging opening of described upright tube (2) links to each other with the input of described second level screw(-type) feeder (3), and the output of described second level screw(-type) feeder (3) links to each other with the feeding mouth of the burner hearth (4) of biomass fuel boiler or gasification furnace.
2. biomass fuel two-stage material plug spiral malleation continuous-feeding device according to claim 1 is characterized in that: the barrel of described upright tube (2) is provided with fire-fighting medium injection joint (5).
3. biomass fuel two-stage material plug spiral malleation continuous-feeding device according to claim 2 is characterized in that: described fire-fighting medium injection joint (5) is arranged on the top of upright tube (2).
4. according to claim 1 or 2 or 3 described biomass fuel two-stage material plug spiral malleation continuous-feeding devices, it is characterized in that: described upright tube (2) is bigbore cylindrical drum, and the diameter of described cylindrical drum is 500～800mm.
5. according to claim 1 or 2 or 3 described biomass fuel two-stage material plug spiral malleation continuous-feeding devices, it is characterized in that: described upright tube (2) is up big and down small circular cone tube, the upper end diameter of described circular cone tube is 600～1000mm, and the lower end diameter of described circular cone tube is 500～800mm.
6. according to claim 1 or 2 or 3 described biomass fuel two-stage material plug spiral malleation continuous-feeding devices, it is characterized in that: the perpendicular bisector of described upright tube (2) and the angle of horizontal plane are 70～90 °.
7. biomass fuel two-stage material plug spiral malleation continuous-feeding device according to claim 4 is characterized in that: the perpendicular bisector of described upright tube (2) and the angle of horizontal plane are 70～90 °.
8. biomass fuel two-stage material plug spiral malleation continuous-feeding device according to claim 5 is characterized in that: the perpendicular bisector of described upright tube (2) and the angle of horizontal plane are 70～90 °.
9. according to claim 1 or 2 or 3 described biomass fuel two-stage material plug spiral malleation continuous-feeding devices, it is characterized in that: the helical blade axis of described first order screw(-type) feeder (1) and second level screw(-type) feeder (3) and the angle of horizontal plane are smaller or equal to 20 °.
10. biomass fuel two-stage material plug spiral malleation continuous-feeding device according to claim 7, it is characterized in that: the helical blade axis of described first order screw(-type) feeder (1) and second level screw(-type) feeder (3) and the angle of horizontal plane are smaller or equal to 20 °.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201120140199XU CN202040828U (en) | 2011-05-05 | 2011-05-05 | Biomass fuel two-stage material plug spiral positive-pressure continuous feeding device |
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| CN201120140199XU CN202040828U (en) | 2011-05-05 | 2011-05-05 | Biomass fuel two-stage material plug spiral positive-pressure continuous feeding device |
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| CN202040828U true CN202040828U (en) | 2011-11-16 |
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| CN102537947A (en) * | 2012-01-20 | 2012-07-04 | 宿迁市凯迪绿色能源开发有限公司 | Novel boiler front feeding device of straw biomass CFB boiler |
| CN102896138A (en) * | 2012-10-10 | 2013-01-30 | 深圳市科讯鸿电子有限公司 | Harmless environment-friendly domestic garbage disposer and domestic garbage disposing method |
| CN102927581A (en) * | 2012-10-23 | 2013-02-13 | 东阳市佳先机械制造有限公司 | Improved feeding device structure of biomass boiler |
| CN103115365A (en) * | 2012-11-12 | 2013-05-22 | 绿能（杭州）企业管理有限公司 | Feeding device and feeding method of circulating fluidized bed garbage incinerator |
| WO2013097535A1 (en) | 2011-12-29 | 2013-07-04 | 武汉凯迪工程技术研究总院有限公司 | Biomass gasification island process under high temperature and atmospheric pressure |
| GB2511891A (en) * | 2013-03-15 | 2014-09-17 | Mark Koenig | System for processing material for a gasifier |
| CN104785078A (en) * | 2015-03-18 | 2015-07-22 | 绿能（杭州）企业管理有限公司 | In-furnace calcium spraying furnace rear humidifying activation circulating ash flue gas purification device and purification process |
| CN104862013A (en) * | 2015-05-25 | 2015-08-26 | 山东百川同创能源有限公司 | Charging system for biomass solid waste and hazardous waste |
| CN104896478A (en) * | 2015-05-25 | 2015-09-09 | 山东百川同创能源有限公司 | Biomass type solid waste and dangerous waste loading technology |
| US9278814B2 (en) | 2013-03-15 | 2016-03-08 | Mark E. Koenig | Isolation gate |
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| US10072223B2 (en) | 2013-03-15 | 2018-09-11 | Mark E. Koenig | Feed delivery system and method for gasifier |
| CN112126470A (en) * | 2020-11-05 | 2020-12-25 | 北京一亚高科能源科技有限公司 | TFB gasification furnace with double-stage sealed feeding |
| CN112852496A (en) * | 2020-12-29 | 2021-05-28 | 哈尔滨锅炉厂有限责任公司 | Double-bin sealing positive pressure feeding system for biomass gasification furnace and using method thereof |
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- 2011-05-05 CN CN201120140199XU patent/CN202040828U/en not_active Expired - Lifetime
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| WO2013097535A1 (en) | 2011-12-29 | 2013-07-04 | 武汉凯迪工程技术研究总院有限公司 | Biomass gasification island process under high temperature and atmospheric pressure |
| CN102537947A (en) * | 2012-01-20 | 2012-07-04 | 宿迁市凯迪绿色能源开发有限公司 | Novel boiler front feeding device of straw biomass CFB boiler |
| CN102896138A (en) * | 2012-10-10 | 2013-01-30 | 深圳市科讯鸿电子有限公司 | Harmless environment-friendly domestic garbage disposer and domestic garbage disposing method |
| CN102896138B (en) * | 2012-10-10 | 2015-12-16 | 深圳市科讯鸿电子有限公司 | Harmless environmental protection domestic garbage treatment machine and life refuse processing method |
| CN102927581A (en) * | 2012-10-23 | 2013-02-13 | 东阳市佳先机械制造有限公司 | Improved feeding device structure of biomass boiler |
| CN102927581B (en) * | 2012-10-23 | 2015-03-11 | 东阳市佳先机械制造有限公司 | Improved feeding device structure of biomass boiler |
| CN103115365B (en) * | 2012-11-12 | 2015-08-05 | 绿能（杭州）企业管理有限公司 | Circulating fluid bed garbage furnace charging gear and feeding method |
| CN103115365A (en) * | 2012-11-12 | 2013-05-22 | 绿能（杭州）企业管理有限公司 | Feeding device and feeding method of circulating fluidized bed garbage incinerator |
| US9278814B2 (en) | 2013-03-15 | 2016-03-08 | Mark E. Koenig | Isolation gate |
| US9592963B2 (en) | 2013-03-15 | 2017-03-14 | Mark E. Koenig | Outlet tube for a material transfer system |
| US10190065B2 (en) | 2013-03-15 | 2019-01-29 | Mark E. Koenig | Feed delivery system and method for gasifier |
| US10071863B2 (en) | 2013-03-15 | 2018-09-11 | Mark E. Koenig | Method for processing material for a gasifier |
| GB2511891A (en) * | 2013-03-15 | 2014-09-17 | Mark Koenig | System for processing material for a gasifier |
| US10072223B2 (en) | 2013-03-15 | 2018-09-11 | Mark E. Koenig | Feed delivery system and method for gasifier |
| GB2511891B (en) * | 2013-03-15 | 2016-10-05 | Koenig Mark | System for processing material for a gasifier |
| US9550630B2 (en) | 2013-03-15 | 2017-01-24 | Mark E. Koenig | System for processing material for a gasifier |
| CN104785078B (en) * | 2015-03-18 | 2017-10-03 | 杭州科晟能源技术有限公司 | Humidification activation circulating ash smoke eliminator and its purification technique after in-furnace calcium spraying stove |
| CN104785078A (en) * | 2015-03-18 | 2015-07-22 | 绿能（杭州）企业管理有限公司 | In-furnace calcium spraying furnace rear humidifying activation circulating ash flue gas purification device and purification process |
| CN104862013A (en) * | 2015-05-25 | 2015-08-26 | 山东百川同创能源有限公司 | Charging system for biomass solid waste and hazardous waste |
| CN104862013B (en) * | 2015-05-25 | 2018-07-17 | 山东百川同创能源有限公司 | A kind of biomass class solid waste and dangerous waste feeding system |
| CN104896478A (en) * | 2015-05-25 | 2015-09-09 | 山东百川同创能源有限公司 | Biomass type solid waste and dangerous waste loading technology |
| CN105423291A (en) * | 2015-12-29 | 2016-03-23 | 哈尔滨工业大学 | Method for preparing nano-SiO2 through H2O2 pretreatment of rice hull combustion and used circulating fluidized bed boiler |
| CN112126470A (en) * | 2020-11-05 | 2020-12-25 | 北京一亚高科能源科技有限公司 | TFB gasification furnace with double-stage sealed feeding |
| CN112852496A (en) * | 2020-12-29 | 2021-05-28 | 哈尔滨锅炉厂有限责任公司 | Double-bin sealing positive pressure feeding system for biomass gasification furnace and using method thereof |
| CN113958958A (en) * | 2021-11-10 | 2022-01-21 | 山西荣光能源有限公司 | Conveying device for waste incineration |
| CN113958958B (en) * | 2021-11-10 | 2024-05-17 | 山西荣光能源有限公司 | Conveying device for garbage incineration |
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Granted publication date: 20111116 |