CN101624538A - Biomass gasification furnace - Google Patents
Biomass gasification furnace Download PDFInfo
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- CN101624538A CN101624538A CN 200910012850 CN200910012850A CN101624538A CN 101624538 A CN101624538 A CN 101624538A CN 200910012850 CN200910012850 CN 200910012850 CN 200910012850 A CN200910012850 A CN 200910012850A CN 101624538 A CN101624538 A CN 101624538A
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- inner housing
- bend
- spare
- vapourizing furnace
- body skin
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- 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
- Y02E20/16—Combined cycle power plant [CCPP], or combined cycle gas turbine [CCGT]
- Y02E20/18—Integrated gasification combined cycle [IGCC], e.g. combined with carbon capture and storage [CCS]
Abstract
The invention relates to a biomass gasification furance comprising an inner housing, an outer housing and a swirler, wherein, the inner housing forms a combustion chamber, the outer housing surrounds the inner housing at certain distance, and the swirler whose input end is communicated with an intake tube is arranged on the bottom zone of the inner housing; a flue gas exhausting port is arranged in the radial direction in the upper zone of the inner housing, and a gas discharging port is arranged on the side wall of the outer housing and below the flue gas exhausting port. The gasification furance adopts a rotational flow mode to filter combustible gas, and combustible gas produced from the gasification furance has favourable quality; in addition, the swirler has simple structure.
Description
Technical field:
The present invention relates to a kind of biomass gasifying furnace.
Background technology:
Biomass energy is mainly derived from rural area depleted stalk, rice husk, branch, weeds, dry fruit shell and woodenware source mill depleted wood chip.Prior biological matter vapourizing furnace has one and can form the furnace shell of combustion chamber and be arranged on the smoke discharge tube of furnace shell upper area, and induced draft fan is installed on smoke tube.This device can make biomass material burn under anoxic condition, to generate inflammable gas.Yet, because the xylogen in the biomass contains tar, make and contain about tar of about 10% in the inflammable gas that is generated behind the biomass combustion, cause the inflammable gas of generation that unpleasant peculiar smell is arranged, pollute the environment during use, and also be unfavorable for carrying and storing.
Prior art thinks that the coal-tar middle oil content of the inflammable gas of above-mentioned generation can remove by the cracked mode, is called this solution of " thermal-cracking decoking biomass gasification furnace " proposition as the name of Chinese patent 1098910C Granted publication.This vapourizing furnace is arranged on the body of heater middle part with fire grate, below fire grate, be equipped with and be connected with the tubular baffle plate of a back taper, its lower port is connected with straight-run of pipe, on drop-bottom, also be provided with a big pipe, and the mouth of pipe of this big pipe is lower than the straight tube upper port, can make the circuitous runner of combustible gas stream to form one.Its meaning is to want to utilize to reduce the inflammable gas flow velocity and make the tar can more cracking to prolong gas in the mode of residing time in furnace.Though tar at high temperature can cracking, and inflammable gass such as generation hydrogen and methane, but because tar is to follow behind biomass combustion to produce in the inflammable gas, even and if the circuitous runner of gas stops, its flow velocity is also very fast relatively, so the vapourizing furnace of this kind structure can only make a spot of tar carry out cracking, its inflammable gas that produces also remains with relatively large tar.
For biomass gasifying furnace with fixed-bed type, because biomass are incendiary under anoxic condition in stove, biomass from top to down in gasification in the stove forms drying layer, pyrolytic layer, reducing zone, zone of oxidation and grieshoch automatically, thereby cause biomass gasification process slow relatively, production efficiency is low, and contains a large amount of tar in the inflammable gas that produces; And for the fluidized bed type biomass vapourizing furnace, though the biomass in the stove can gasify under suspended state, its production efficiency is higher,, the making of this kind vapourizing furnace and production cost are all higher, and the inflammable gas that is produced simultaneously still contains relatively large tar.
The name of Chinese patent 2364040Y number bulletin is called a kind of improvement project that " spiral-flow type biomass vapourizing furnace " proposes.This vapourizing furnace is the improvement on the basis of existing fixed-bed type vapourizing furnace, a spiral conveyer promptly is installed in stove, to utilize this spiral conveyer to stir upset stove endogenous substance material, break the structure that the biomass multilayer distributes, and then biomass energy is gasified fast.Though this vapourizing furnace can make biomass be similar to combustion gasification under the fluidizing state with simple structure, its efficient is higher relatively, but because of this vapourizing furnace purification inflammable gas of not adopting an effective measure, cause it to contain a large amount of tar, bring many difficulties for follow-up combustion gas utilization.
Summary of the invention:
The purpose of this invention is to provide a kind of rotation centrifugal force that gas produced that utilizes and separate tar in the inflammable gas, the biomass gasifying furnace of problems such as peculiar smell and contaminate environment is arranged to solve inflammable gas.
Biomass gasifying furnace proposed by the invention comprises the inner housing that forms the combustion chamber and is enclosed in the body skin of this inner housing periphery with keeping at a certain distance away, and is installed in the swirler that inner housing bottom section and input terminus are connected with blast pipe; The inner housing upper area radially be provided with the flue gas export mouth, also be provided with the combustion gas relief outlet on the sidewall of body skin and below the flue gas export mouth.Because of the gas of exporting from swirler rotates, can drive the inflammable gas rotation behind the gasifying biomass, when inflammable gas when the flue gas export mouth flows out, the centrifugal force that rotation is produced forces the internal surface of inflammable gas bump body skin, cause the entrained tar liquid major part of inflammable gas can be bonded on the body skin internal surface, thereby realize purification inflammable gas.
The top of described flue gas export mouth also is equipped with the liquid seal trough that is looped around body skin and inner housing top, vertical pipe fitting is installed in this liquid seal trough, and makes the lower end of vertical pipe fitting extend the liquid seal trough bottom surface and enter by in body skin and the formed cavity of inner housing.The upper surface open of liquid seal trough, some can enter the liquid seal trough top inflammable gas in the stove after the gasification, water resistance in it every after, the intravital tar of quilt obstruct combustible gas is added in the water and wafts and floats on the surface, when the tar in the liquid seal trough was higher than the upper surface of vertical pipe fitting, tar flowed in body skin and the formed cavity of inner housing through vertical pipe fitting.
The radially dividing plate of inclination also is installed between the body skin of described combustion gas relief outlet top and the inner housing, this radially dividing plate be provided with through hole.Through hole on the described radially dividing plate is provided with two at least, and each through hole all is equipped with downwards the pipe fitting that extends, and this pipe fitting comprises straight tube spare and bend pipe spare.Described bend pipe spare comprises first bend and and second bend that crooked radian make progress that be connected with first bend that crooked radian is downward.Between the body skin of described radially dividing plate below and the inner housing cracking bend pipe spare is installed also, the lower end of this cracking bend pipe spare is in inner housing extends to the combustion chamber.Agglutinating tar via through holes and straight tube spare, bend pipe spare flow into the radially below of dividing plate respectively on the body skin internal surface, simultaneously, and because of dividing plate radially is a tilting setting, so most of tar flows into radially dividing plate below through bend pipe spare.
The upper edge of first bend in the upper end of described cracking bend pipe spare and the bend pipe spare is on same horizontal plane.The lower ends downward of described straight tube spare is extended the plane at the place, upper edge of the upper end of cracking bend pipe spare and first bend in the bend pipe spare.Radially the body skin and the formed re-entrant portion of inner housing of dividing plate below are filled with water, and its horizontal plane is arranged on the upper edge of first bend in the bend pipe spare, and the lower end of straight tube spare is extend in the horizontal plane, and makes the upper end of cracking bend pipe spare equal with horizontal plane.Wherein, straight tube spare is the parts that are used to transmit inflammable gas, and inflammable gas can be in straight tube spare enters water, and emersion flows out to the specified containers from the combustion gas relief outlet from water again; Bend pipe spare is the parts that are used for tar transmission, and is equal with liquid level because of the upper edge of first bend, so bend pipe spare can hinder gas to be passed through, can only allow liquid material such as tar in its inflow water; Cracking bend pipe spare is to be used for tar sent into carrying out the cracked parts in the vapourizing furnace, and equal with liquid level because of its upper surface, the proportion of tar is less than the proportion of water, so tar can float above the water surface, and enters in the vapourizing furnace through cracking bend pipe spare.
Described swirler comprises a ducted body, the upper surface sealing of this ducted body, and lower surface is opened and is connected with blast pipe, and at the lateral through hole of inclination in the same direction that radially is provided with of this ducted body.After blower fan is sent into compressed gas in the swirler by blast pipe, the through hole that the same direction of gas warp-wise tilts flows out, make gas produce rotation, to produce centrifugal force, because of the through hole of swirler is arranged on oxidation zone in the vapourizing furnace, and the inflammable gas after the gasification is above oxidation zone, so swirler can improve gasifying biomass speed.
In the formed space liquid is housed between described body skin and the inner housing, this liquid is made of aqueous sodium hydroxide solution or calcium hydroxide aqueous solution or aqueous ethanolic solution or water.Sodium hydroxide or calcium hydroxide or the relative water of the alcoholic acid aqueous solution have the ability of stronger processing tar.
Biomass gasifying furnace proposed by the invention adopts eddy flow and water dual mode to filter inflammable gas, and the inflammable gas quality that it is produced is very good, and the structure of swirler and formation water filtration parts is very simple; Simultaneously, the tar after filtering is sent into further cracking in the vapourizing furnace, can produce inflammable gass such as carbon monoxide, hydrogen and methane behind the coke tar cracking, biomass energy is accessed make full use of.
Description of drawings:
Accompanying drawing 1 is the outward appearance cross-sectional view of an embodiment of biomass gasifying furnace proposed by the invention;
Accompanying drawing 2 is inner housing 1 below cross-sectional view among Fig. 1;
Accompanying drawing 3 is amplification profile structural representations of swirler shown in Fig. 23.
Embodiment:
Referring to Fig. 1 to Fig. 3, these three accompanying drawings provide the surface structure of an embodiment of biomass gasifying furnace proposed by the invention.This vapourizing furnace comprises cylindrical inner housing of being made by metal sheet 1 and the body skin 2 that is enclosed in inner housing 1 periphery with keeping at a certain distance away, and inner housing 1 inner chamber forms the combustion chamber.Above inner housing 1, be provided with four (can be provided with a plurality of as required) flue gas export mouths 11, and each flue gas export mouth 11 all has equidirectional inclination flow deflector 12; At the middle part of body skin 2 a combustion gas relief outlet 21 is installed, a flue gas discharge opening 22 is installed at an upper portion thereof, this flue gas discharge opening 22 is provided with valve 23.
The middle part of going to the bottom of inner housing 1 is equipped with a swirler 3 that extends upward, this swirler 3 comprises a cylindrical hollow body 31, be provided with at the upper top of ducted body 31 and be used to seal keeping out the wind of ducted body 31 upper ends and emit 32, at its lateral through hole 33 of inclination in the same direction that radially is provided with, the lower surface of ducted body 31 is opened and is connected with blast pipe 34.When compressed gas in blast pipe 34 enters swirler 3 and after via through holes 33 discharges, gas can be according to same direction spiral escalation in inner housing 1, with the also spiral escalation of inflammable gas in the drive vapourizing furnace, and the flue gas export mouth 11 through inner housing 1 top is discharged to the internal surface of body skin 2.Because of the air output of swirler 3 can cause the vertical height of stove internal oxidation layer to change, generally speaking, the vertical height of zone of oxidation is arranged on 8-12 centimetre, if the zone of oxidation vertical height is during greater than 12 centimetres, can suitably dwindle the air quantity that is input in the swirler 3, to reduce the height of zone of oxidation; And when zone of oxidation vertical height during less than 8 centimetres, increase the air output in the swirler 3, with the height of suitable increase zone of oxidation.
On the top of body skin 2 and inner housing 1 liquid seal trough 4 is installed also, this liquid seal trough 4 is that the casing by annular constitutes, and circulating type is installed in the top of body skin 2 and inner housing 1.A vertical pipe fitting 41 is installed in this liquid seal trough 4, and makes the lower end of vertical pipe fitting 41 extend liquid seal trough 4 bottom surfaces and enter by in body skin 2 and the inner housing 1 formed cavity.When the tar face in the liquid seal trough 4 was higher than the upper surface of vertical pipe fitting 41, its tar that exceeds will flow in the above-mentioned cavity through vertical pipe fitting 41.Sealing loam cake (not providing concrete structure among the figure) also is installed on the top of body skin 2, excessive to hinder furnace gas.
The radially dividing plate 5 of inclination also is installed between body skin 2 and inner housing 1, radially be provided with four through holes 51 at interval equidistantly on the dividing plate 5 at this, and each through hole 51 all is equipped with the pipe fitting that extends downwards, wherein, two through holes 51 on a diametric(al) are equipped with straight tube spare 6, and two through holes 51 on another straight line are equipped with bend pipe spare 7.Bend pipe spare 7 comprises first bend 71 that crooked radian is downward and second bend 72 that be connected with first bend 71 and that crooked radian makes progress.Radially dividing plate 5 adopts the favourable tar thereon of structure that tilts to flow, so that tar can flow out by straight tube spare 6 and bend pipe spare 7.
Between body skin 2 below dividing plate 5 radially and the inner housing 1 cracking bend pipe spare 8 is installed also, this cracking bend pipe spare 8 also comprises first bend 81 and second bend 82, its lower end 83 extends in the combustion chamber through inner housing 1, the upper edge 73 of first bend 71 in its upper end 84 and the bend pipe spare 7 is on same horizontal plane, and above-mentioned straight tube spare 6 extends downwardly into the below of cracking bend pipe spare 8 upper ends.
In between body skin 2 and inner housing 1, forming at interval liquid is housed also, this liquid is made of aqueous solution of sodium oxide or calcium hydroxide aqueous solution or aqueous ethanolic solution or water, say the ability with stronger processing tar because of sodium hydroxide or calcium hydroxide or the relative water of the alcoholic acid aqueous solution, promptly tar can be suspended in fluid surface soon in this liquid.The height of this liquid or liquid level are mutually concordant with the upper edge 73 of first bend 71 of cracking bend pipe spare 8 and bend pipe spare 7, like this, after tar floats on the fluid surface, can flow into cracking bend pipe spare 8, by cracking bend pipe spare 8 it is sent into and carry out cracking in the combustion chamber; Simultaneously, can also make first bend 71 to the exit end of bend pipe spare 7 be filled with liquid, can hinder gas, only allow tar liquid to flow out through cracking bend pipe spare 8 by cracking bend pipe spare 8.
Biomass gasifying furnace proposed by the invention is when gasified bio-matter, at first biomass such as section shape stalk, rice husk, section shape branch, section shape weeds and section shape wood chip etc. are joined (in the stove) in the inner housing 1 by sealing loam cake (not providing concrete structure among the figure), then the biomass of bottom are lighted, it is burnt under anoxic condition, and along with the quantity of biomass combustion is added biomass in stove.Biomass from top to down in gasification in the stove forms drying layer, pyrolytic layer, reducing zone, zone of oxidation and grieshoch automatically.Be provided with ash output hole (not providing concrete structure among the figure) at body skin 2 and inner housing 1 near the grieshoch position.
Claims (10)
1, biomass gasifying furnace is characterized in that: this vapourizing furnace comprises the inner housing that forms the combustion chamber and is enclosed in the body skin of this inner housing periphery with keeping at a certain distance away, and is installed in the swirler that inner housing bottom section and input terminus are connected with blast pipe; The upper area of described inner housing radially be provided with the flue gas export mouth, also be provided with the combustion gas relief outlet on the sidewall of described body skin and below the flue gas export mouth.
2, vapourizing furnace according to claim 1, it is characterized in that: the top of described flue gas export mouth also is equipped with the liquid seal trough that is looped around body skin and inner housing top, vertical pipe fitting is installed in this liquid seal trough, and makes the lower end of vertical pipe fitting extend the liquid seal trough bottom surface and enter by in body skin and the formed cavity of inner housing.
3, vapourizing furnace according to claim 1 is characterized in that: the radially dividing plate of inclination also is installed between the body skin of described combustion gas relief outlet top and the inner housing, this radially dividing plate be provided with through hole.
4, vapourizing furnace according to claim 3 is characterized in that: the through hole on the described radially dividing plate is provided with two at least, and each through hole all is equipped with downwards the pipe fitting that extends, and this pipe fitting comprises straight tube spare and bend pipe spare.
5, vapourizing furnace according to claim 4 is characterized in that: described bend pipe spare comprises first bend and and second bend that crooked radian make progress that be connected with first bend that crooked radian is downward.
6, vapourizing furnace according to claim 4 is characterized in that: between the body skin of described radially dividing plate below and the inner housing cracking bend pipe spare is installed also, the lower end of this cracking bend pipe spare is in inner housing extends to the combustion chamber.
7, according to claim 4 or 5 or 6 described vapourizing furnaces, it is characterized in that: the upper edge of first bend in the upper end of described cracking bend pipe spare and the bend pipe spare is on same horizontal plane.
8, vapourizing furnace according to claim 7 is characterized in that: the lower ends downward of described straight tube spare is extended the plane at the place, upper edge of the upper end of cracking bend pipe spare and first bend in the bend pipe spare.
9, vapourizing furnace according to claim 1, it is characterized in that: described swirler comprises a ducted body, the upper surface sealing of this ducted body, lower surface is opened and is connected with blast pipe, and at the lateral through hole of inclination in the same direction that radially is provided with of this ducted body.
10, vapourizing furnace according to claim 1 is characterized in that: in the formed space liquid is housed between described body skin and the inner housing, this liquid is made of aqueous sodium hydroxide solution or calcium hydroxide aqueous solution or aqueous ethanolic solution or water.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200910012850 CN101624538A (en) | 2009-07-31 | 2009-07-31 | Biomass gasification furnace |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200910012850 CN101624538A (en) | 2009-07-31 | 2009-07-31 | Biomass gasification furnace |
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| CN101624538A true CN101624538A (en) | 2010-01-13 |
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| CN 200910012850 Pending CN101624538A (en) | 2009-07-31 | 2009-07-31 | Biomass gasification furnace |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102260531A (en) * | 2011-06-02 | 2011-11-30 | 刘善华 | Spinning bed gasification furnace |
| CN104214801A (en) * | 2014-09-02 | 2014-12-17 | 辽宁科技大学 | Split portable biomass gasifier |
| CN104263389A (en) * | 2014-09-05 | 2015-01-07 | 黄熙瑜 | Biomass gasification reaction furnace |
-
2009
- 2009-07-31 CN CN 200910012850 patent/CN101624538A/en active Pending
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102260531A (en) * | 2011-06-02 | 2011-11-30 | 刘善华 | Spinning bed gasification furnace |
| CN102260531B (en) * | 2011-06-02 | 2013-07-17 | 刘善华 | Spinning bed gasification furnace |
| CN104214801A (en) * | 2014-09-02 | 2014-12-17 | 辽宁科技大学 | Split portable biomass gasifier |
| CN104214801B (en) * | 2014-09-02 | 2016-06-29 | 辽宁科技大学 | A kind of Split portable biomass gasifying furnace |
| CN104263389A (en) * | 2014-09-05 | 2015-01-07 | 黄熙瑜 | Biomass gasification reaction furnace |
| CN104263389B (en) * | 2014-09-05 | 2016-09-21 | 黄熙瑜 | Biomass gasification reaction stove |
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Application publication date: 20100113 |