CN105296008A - Process and device for producing coal gas by biomass bale gasification - Google Patents
Process and device for producing coal gas by biomass bale gasification Download PDFInfo
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- CN105296008A CN105296008A CN201510472730.6A CN201510472730A CN105296008A CN 105296008 A CN105296008 A CN 105296008A CN 201510472730 A CN201510472730 A CN 201510472730A CN 105296008 A CN105296008 A CN 105296008A
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Abstract
The invention relates to a process and a device for producing coal gas by biomass bale gasification. The process and the device are characterized in that a straw bale taken back from a farmland is directly placed into a furnace to be gasified without special straw treatment. Therefore, the raw materials cost is greatly lowered, the heating value of coal gas is relatively high, the demand of industrial coal gas can be met, and the process and the device are suitable for a large scale, and have the conversion rate up to 80 percent or above. The process and the device are suitable for any biomass raw materials.
Description
Technical field
The invention belongs to gasifying biomass field, particularly relate to technique and device that coal gas is produced in the whole bag gasification of a kind of biomass.
Background technology
At present, domestic and international biomass gasification technology is divided into: fixed bed updraft type, downdraft gasification technology, fluidized-bed gasification technology.
Fixed bed updraft type, its raw material can only be applicable to biological particles, the gasification of wood chip block, corn cob, and the cost of coal gas is very high, inapplicable stalk, and stalk directly catches fire after entering stove, can not form coal gas; Fixed bed downdraft gasification technology, transformation efficiency is low, and caloric power of gas is low, 1200kcal/m
3below; Biomass fluid bed gasification furnace is only applicable to rice husk, and other stalk is all inadaptable, and gasification efficiency is extremely low, thermo-efficiency less than 50%, transformation efficiency less than 50%, the low 1100kcal/m of caloric power of gas
3below.
There is several large problem in above-mentioned several gasification process, one is little to biomass material subject range, accounts for biomass total amount less than 5% jointly, and a large amount of stalks can not gasify use.Two is that calorific value is low does not reach industrial coal gas 1250kcal/m
3above requirement, domestic gas composition do not reach again national regulation CO lower than 20% standard.Three is be that raw material gas cost is high with biological particles, is 2-3 times of gasification of coal.So grain-producing area stalk digests nowhere, straw from village burns phenomenon and remains incessant after repeated prohibition, and cause severe contamination to air, the utilization of these renewable energy resources of stalk is had difficulty in taking a step.
Summary of the invention
For above-mentioned situation, provide the whole bag gasifying process of a kind of biomass and device, the whole bag stalk regained from farmland is directly entered furnace gas, do not need, to the special processing of stalk, to greatly reduce raw materials cost; This technique and device utilize stalk acquisition process to pack, and make loose shape stalk relative density increase and keep relative ventilation property, gasification is stablized, gas quality good calorific value Gao Keda 1500kcal/m
3, can meet the requirement of industrial coal gas completely, be applicable to maximizing, transformation efficiency is up to more than 80%; This technique and device are suitable for any biomass material.
For this purpose, this technology takes following scheme:
In order to prevent starting point stove space-time stove, it is too large that first bag stalk adds drop, first loose shape stalk is lighted filling it up with in stove, material in vapourizing furnace is made to remain on gas exit equal height, Straw bale is risen to top of gasification furnace, Straw bale, in upper orienting sleeve, by alternate feeding mechanism, adds vapourizing furnace in while sealing in guarantee vapourizing furnace by nature landing.When material decline reaches a Straw bale difference of altitude in combustion gasification stove, repeat an action and add a bag stalk, go round and begin again like this.At vapourizing furnace bottom oven grate middle port riser upward, by gas blower by air and vapor mixing, the saturation steam formed at a certain temperature, send in stove as vaporized chemical, the gasification waste heat of steam source in main body stove is by the evaporation gained of water jacket, saturation steam from the bottom up, spread from centre to surrounding, balanced by grieshoch to zone of oxidation and stalk oxidizing reaction, then rise to reducing zone and change into coal gas, coal gas rise again to stalk carry out destructive distillation produce dry distillation gas, continue to rise and the stalk newly entered in stove is dried, last coal gas is discharged body of heater and deliver to user after purification.Form the reinforced continuous gas generation of interval, can run continuously all the year round.
The technology of the present invention feature
1, raw material Straw bale, what receives, and with regard to what vaporized stove, any process is not done in centre.Convenient management, saving of work and time, economize in raw materials cost.
2, in order to adapt to the loose and Straw bale of closely knit surrounding in the middle of Straw bale and gasification inboard wall of furnace body has gap, prevent vaporized chemical and coal gas from walking surrounding space in a large number, cause gasification uneven, under upcast is located at fire grate, center mouth upward, the rising mouth of pipe is through being 1/3 of Straw bale size, and during vaporized chemical supply, the central wind of material is strong, and the zone of oxidation of formation is spread to surrounding equilibrium by centre, coal gas evenly rises simultaneously, makes vapourizing furnace stable conditions.
3, utilize gasification waste heat, produce steam self use, need not establish external vapour source, thermo-efficiency is high.
4, fire grate trilateral divides lower fan, and cloth wind is even, and ash disposal is even, has shearing action to long stapled ash.
5, whole bag gasification greatly reduces the dust that coal gas is carried secretly.
Accompanying drawing explanation
Accompanying drawing 1 is a kind of biomass whole bag gasification installation structural representation.Wherein:
Fig. 1 is a kind of biomass whole bag gasification installation structure schematic front view.
Fig. 2 is that the A-A of Fig. 1 analyses and observe schematic top plan view.
Accompanying drawing 2 is a kind of biomass whole bag gasification installation circular configuration schematic diagram, uses as appended claims.Wherein:
Fig. 3 is a kind of biomass whole bag gasification installation circular configuration schematic diagram.
Fig. 4 is that Fig. 3 analyses and observe schematic top plan view.
Accompanying drawing 1 is consistent with accompanying drawing 2 number in the figure and title.
Number in the figure: 1, guide collar, 2, upper sealing charging mechanism, 3, reinforced baffle-box, 4, sealing glycerine hand-hole, 5, lower seal charging mechanism, 6, the uniform passage of coal gas, 7, gas exit, 8, main body cover, 9, main body inner casing, 10, water jacket, 11, movable rows, 12, fixed grate, 13, brace rod, 14, ash bin, 15, upper ash discharge slide valve, 16, ash discharge baffle-box, 17, lower ash output slide valve, 18, ash output hole, 19, riser, 20, mixing tube, 21, moving point fire tube, 22, fire hole, 23, moving grate pull bar, 24, gas blower, 25, vapour pipe, 26, manhole, 27, downtake, 28, ring gas header, 29, chuck steam outlet pipe, 30, main body bleeder, 31, reinforced baffle-box bleeder, 32, lower link, 33, drum, 34, upper connecting rod, 35, lower flashboard, 36, upper flashboard
Embodiment:
According to the vapourizing furnace of different capacity, select the circle of different size or square Straw bale.With loose shape stalk, vapourizing furnace is filled it up with rear enclosed when putting stove first, then the moving point fire tube 21 put in advance by fire hole 22 is stretched into torch, the place of bottom centre of stalk in stove is lighted, extract moving point fire tube 21 out enclosed point fire hole 22, by lift, Straw bale is mentioned top of gasification furnace by Straw bale, landing enters in guide collar 1, pulled open the upper flashboard 36 of sealing charging mechanism 1 by upper connecting rod 34 by extrinsic power, Straw bale is made to fall in reinforced baffle-box 3, again the upper flashboard 36 of sealing charging mechanism 1 is shut, by automatic glycerine pump, its glycerine is injected by prolonging Zhou Junbu glycerine mouth 4 effect playing sealing coal gas simultaneously, pulled open by the lower flashboard 35 of lower link 32 by lower seal charging mechanism by extrinsic power, Straw bale landing enters in vapourizing furnace, so repeat reinforced process.Straw bale enters in vapourizing furnace, has a poor location, slowly fall with gasification more than gas exit with gas exit, prevents cold burden from affecting the stability of gasification and impacting coal gas air outlet.Saturation steam is as vaporized chemical, that the water jacket 10 formed by main body cover 8 and main body inner casing 9 utilizes in stove the steam that waste heat produces that gasifies, by chuck steam outlet pipe 29 and drum 33 after vapour pipe 25 with the air mixed of mixing tube 20, be forced through riser 19 by gas blower 24 and make a gift to someone bottom vapourizing furnace in vapourizing furnace and is used as to gasify.Coal gas is formed and is discharged by the uniform passage 6 of coal gas and gas exit 7 after grieshoch, zone of oxidation, reducing zone, destructive distillation layer, drying layer from lower to upper.Material in vapourizing furnace from top to bottom, after gasification, become a small amount of straw ash drops on the fire grate that supported by brace rod 13, moving grate 11 is pulled to come and go action by hydrostatic transmission through moving grate pull bar 21, the straw ash dropped on moving grate triangular furnace interspace fixed grate 12 trilateral fire bars is scraped and falls into ash bin, again through upper ash disposal slide valve 15 ash disposal baffle-box 16 times ash disposal slide valves 17, discharged out of the furnace by ash disposal mouth 18.When manhole 26 is for maintenance.Vapourizing furnace agent structure, according to the shape of Straw bale, can be made into the square circle that is made into as shown in accompanying drawing 1, accompanying drawing 2.
Claims (4)
1. the whole bag gasification process of biomass, it is characterized in that: in order to prevent starting point stove space-time stove, it is too large that first bag stalk adds drop, first loose shape stalk is lighted filling it up with in stove, make material in vapourizing furnace remain on gas exit equal height, by lift, Straw bale is risen to top of gasification furnace, the landing of hopper inclination Straw bale nature is in upper orienting sleeve, by alternate feeding mechanism, while sealing in guarantee vapourizing furnace, Straw bale is added in vapourizing furnace.When material decline reaches a Straw bale difference of altitude in combustion gasification stove, repeat an action and add a bag stalk, go round and begin again like this.At vapourizing furnace bottom oven grate middle port riser upward, by gas blower by air and vapor mixing, the saturation steam formed at a certain temperature, send in stove as vaporized chemical, the gasification waste heat of steam source in main body stove is by the evaporation gained of water jacket, saturation steam from the bottom up, spread from centre to surrounding, balanced by grieshoch to zone of oxidation and stalk oxidizing reaction, then rise to reducing zone and change into coal gas, coal gas rise again to stalk carry out destructive distillation produce dry distillation gas, continue to rise and the stalk newly entered in stove is dried, last coal gas is discharged body of heater and deliver to user after purification.Form the reinforced continuous gas generation of interval, can run continuously all the year round.
2. the device of the whole bag gasification of biomass, comprise overall structure, its constitutional features is: vapourizing furnace is provided with, guide collar 1 makes Straw bale aim at charging opening when feeding in raw material, upper sealing charging mechanism 2, upper connecting rod 34, lower seal charging mechanism 5, lower link 32 and reinforced baffle-box 3 coordinate, alternate feeding reaches in reinforced process, and vapourizing furnace keeps sealed state.Lower seal charging mechanism and gas exit 7 and coal gas uniform passage 6 level have a potential difference.Main body cover 8 and main body inner casing 9 form water jacket 10, the water entered by downtake 27, utilize gasification waste heat for generating steam.The moving grate 11 of trilateral fire bars drops on the fixed grate 12 by brace rod 13 support, pull reciprocation action that straw ash is discharged to ash bin 14 by moving grate pull bar 23, through upper ash discharge slide valve 15 ash discharge baffle-box 16 lower ash output slide valve 17 alternation switch, by ash output hole 18, straw ash is discharged out of the furnace.Ignition mechanism is formed by moving point fire tube 21 and fire hole 22.The steam that water jacket produces, by chuck steam outlet pipe 29 drum 33 vapour pipe 25, is entered mixing tube 20 with the air of gas blower 24 and is sent in stove by riser 19.Coal gas produces in stove delivers to user through coal gas uniform passage 6 ring gas header 28 gas exit 7 from lower to upper.Main body bleeder 30, when vapourizing furnace is lighted a fire, is used during interval blowing out.Reinforced baffle-box bleeder 31, discharges remaining a small amount of gas during alternate feeding.
3. as described in claim 1: the method for the whole bag gasification of a kind of biomass.
4. as described in claim 2: the device of the whole bag gasification of a kind of biomass.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201510472730.6A CN105296008A (en) | 2015-08-06 | 2015-08-06 | Process and device for producing coal gas by biomass bale gasification |
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| CN201510472730.6A CN105296008A (en) | 2015-08-06 | 2015-08-06 | Process and device for producing coal gas by biomass bale gasification |
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| CN105296008A true CN105296008A (en) | 2016-02-03 |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106433786A (en) * | 2016-02-16 | 2017-02-22 | 舒瑞 | Biomass whole package purifying and feeding device and method |
| CN110068014A (en) * | 2018-11-10 | 2019-07-30 | 自贡市现代秋收机械有限公司 | A kind of purification method of house refuse burning processing |
| CN110295061A (en) * | 2019-08-02 | 2019-10-01 | 北京巨星新能源科技有限公司 | A kind of biomass carbon material process units |
| CN112555870A (en) * | 2020-10-21 | 2021-03-26 | 浙江大学 | Straw gasification combustion-heat energy grain drying coupling technology for heavy metal pollution farmland restoration |
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| JP2000355693A (en) * | 1999-06-14 | 2000-12-26 | Ishikawajima Harima Heavy Ind Co Ltd | Coal gasification equipment |
| CN101240904A (en) * | 2008-03-24 | 2008-08-13 | 沈桀 | Pulverization-free, dampness-resistant, coke tar-free biomass gasification oven preventing burning out |
| CN102329652A (en) * | 2011-08-30 | 2012-01-25 | 张建超 | Downdraft plasma garbage gasification reaction chamber and gasification process |
| CN103725300A (en) * | 2014-01-25 | 2014-04-16 | 李冬 | Continuous feeding straw high-speed carbonizing apparatus |
| CN204042950U (en) * | 2014-04-30 | 2014-12-24 | 成都中环资(集团)有限公司 | A kind of novel straw biomass power generation fuel delivery means |
-
2015
- 2015-08-06 CN CN201510472730.6A patent/CN105296008A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2000355693A (en) * | 1999-06-14 | 2000-12-26 | Ishikawajima Harima Heavy Ind Co Ltd | Coal gasification equipment |
| CN101240904A (en) * | 2008-03-24 | 2008-08-13 | 沈桀 | Pulverization-free, dampness-resistant, coke tar-free biomass gasification oven preventing burning out |
| CN102329652A (en) * | 2011-08-30 | 2012-01-25 | 张建超 | Downdraft plasma garbage gasification reaction chamber and gasification process |
| CN103725300A (en) * | 2014-01-25 | 2014-04-16 | 李冬 | Continuous feeding straw high-speed carbonizing apparatus |
| CN204042950U (en) * | 2014-04-30 | 2014-12-24 | 成都中环资(集团)有限公司 | A kind of novel straw biomass power generation fuel delivery means |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106433786A (en) * | 2016-02-16 | 2017-02-22 | 舒瑞 | Biomass whole package purifying and feeding device and method |
| CN110068014A (en) * | 2018-11-10 | 2019-07-30 | 自贡市现代秋收机械有限公司 | A kind of purification method of house refuse burning processing |
| CN110295061A (en) * | 2019-08-02 | 2019-10-01 | 北京巨星新能源科技有限公司 | A kind of biomass carbon material process units |
| CN110295061B (en) * | 2019-08-02 | 2024-04-05 | 北京巨星新能源科技有限公司 | Biomass carbonized material production device |
| CN112555870A (en) * | 2020-10-21 | 2021-03-26 | 浙江大学 | Straw gasification combustion-heat energy grain drying coupling technology for heavy metal pollution farmland restoration |
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Application publication date: 20160203 |