CN202214341U - Tar separation and circulating cracking conversion device in biomass gasification - Google Patents
Tar separation and circulating cracking conversion device in biomass gasification Download PDFInfo
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- CN202214341U CN202214341U CN2011203487463U CN201120348746U CN202214341U CN 202214341 U CN202214341 U CN 202214341U CN 2011203487463 U CN2011203487463 U CN 2011203487463U CN 201120348746 U CN201120348746 U CN 201120348746U CN 202214341 U CN202214341 U CN 202214341U
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Abstract
The utility model discloses a tar separation and circulating cracking conversion device in biomass gasification, which is characterized in that a vertical barrel-shaped furnace is arranged, a gasified gas outlet is arranged on the side wall of the upper portion of the furnace and connected with a gradually expanding pipe through a horizontal gasified gas outlet pipe, the gradually expanding pipe is divided into an upper pipe and a lower pipe by a middle partition plate at the position of an orifice at the large-diameter tail end, the upper pipe is communicated with a vertical exhaust pipe, the lower pipe is communicated with a circulating pipe, and the circulating pipe is led from the lower portion of the furnace into the inside of the furnace, passes through a vertical g return as pipe at the center of the furnace prior to being led out of the furnace through a return gas outlet pipe on the inner upper portion of the furnace, and is communicated with the gasified gas outlet pipe. A 'U'-shaped tar recovery pipe is arranged at the bottom of the vertical exhaust pipe, a tar outlet at the bottom of the tar recovery pipe is connected with one end of a U-shaped liquid seal pipe, and the other end of the liquid seal pipe is connected with a tar cracking pipe which is downwardly obliquely led to the center of the furnace. By the aid of the tar separation and circulating cracking conversion device in biomass gasification, tar can be removed circularly by gasified gas, purifying capacity of the gasified gas is improved remarkably, and cleaner aerogenesis is obtained.
Description
Technical field
The utility model relates to vapourizing furnace, specifically relates to the coal-tar middle oil refining plant of the thick combustion gas of a kind of small-sized biomass gasifier.
Background technology
Hydrogen is a kind of new forms of energy of cleanliness without any pollution.Biomass gasification cracking under certain condition are hydrogen, and annually in nature and the farmland all will produce a large amount of biomass.But in biomass gasified gas, contain more tar, tar can not act as a fuel and directly burn but also pollution and obstruction tracheae and kitchen range, and this also is the one of the main reasons that the restriction gasifying biomass is produced hydrogen.Existing small-sized biomass gasifier is in the application in rural area, mainly as the source of the gas of dispersion user cooking usefulness gas.Because tar is inevitable sub product in the gasification; As can not carry out comparatively effectively purifying cleaning to tar; Thereby tar very easily is condensed into liquid state and stops up tracheae, valve and kitchen range etc. when temperature is lower than 200 ℃; This will make the gasification efficiency of vapourizing furnace reduce greatly, influence the steady running of vapourizing furnace.Can not effectively handle tar becomes the major technique obstacle that small-sized biomass gasifier is applied.
Chinese patent CN10163625A has proposed " detarring small-sized biomass gasifier method and apparatus ", and the gasification gas that from vapourizing furnace, comes out is collected after the tar condensation therein and sent back to and carry out cracking in the vapourizing furnace through the traverse baffle in the gasification separate chamber.And be outside equipped with catalyst chamber at stove, catalyzer therein carries out further catalytic pyrolysis to tar, but in this structure formation, and gasification gas can only be through a catalytic pyrolysis, and catalyst chamber is arranged on the outer lysis efficiency that will reduce tar of stove.
The utility model content
The purpose of the utility model is to overcome the weak point of prior art; A kind of biomass gasification tar partitioning cycle cracking conversion system is provided; Utilize separating circulating device to make tar can repeatedly get into the inherent high-temperature zone of stove and carry out cracking; And can carry out secondary and remove tar, to improve the changing effect of biomass gasification tar.
The utility model adopts following technical scheme for the technical solution problem:
The constructional feature of the utility model biomass gasification tar partitioning cycle cracking conversion system is that vertical tubular body of heater is set; Upper portion side wall at said body of heater is provided with gasification gas outlet; Said gasification gas outlet connects an increaser through being horizontally disposed gasification gas fairlead; The terminal mouth of pipe in the big footpath of said increaser is divided into upper tube and lower tube with median septum, and said upper tube is connected with the exhaust standpipe, and said lower tube is connected with circulation tube; It is inner that said circulation tube is introduced body of heater in the bottom of body of heater, behind the one section return-air standpipe that is arranged on the body of heater center, derives the body of heater outside through one section return-air fairlead that is positioned at the body of heater internal upper part, and be connected with gasification gas fairlead; In the bottom of said exhaust standpipe " U " formed coke recovery of oil pipe is set; Oil outlet is connected with an end of U-shaped liquid sealing pipe in the bottom of said tar TFL; The other end of said liquid sealing pipe connects the coke tar cracking pipe, and said coke tar cracking pipe is down to the center that tilts to introduce body of heater.
The constructional feature of the utility model biomass gasification tar partitioning cycle cracking conversion system also is:
In the outer setting heat exchange sleeve of said exhaust standpipe, the bottom of said heat exchange sleeve is provided with cool air inlet, and the top is provided with hot air outlet, and it is inner that said hot air outlet is introduced body of heater through the air guiding tube.
Said return-air standpipe is set to spiral tube, in said spiral tube, places catalytic media, and said catalytic media is that particle diameter is the rhombspar of 1-5mm.
The angle of inclination of said coke tar cracking pipe is 2 °～5 °.
The biomass gasification gas that produces that in stove, gasifies obtains reduction of speed through increaser; Tar belongs to macromolecular substance; Its weight is than heavy many of gases such as hydrogen, under action of gravity, contains the more gasification gas of tar and gets into once more through circulation tube and receive thermo-cracking in the stove, realizes removing for the first time tar; Contain the less gasification gas vapor pipe heat exchange of tar and reclaim, and the high-temperature zone that is back to again in the vapourizing furnace carries out cracking once more, realize removing for the second time tar.Compared with present technology, the utility model beneficial effect is embodied in:
1, the utility model has realized that the circulation of gasification gas removes tar, has significantly improved the detergent power to gasification gas, obtains more clean aerogenesis;
2, the utility model air that will pass through preheating is introduced the thermo-efficiency that has improved system in the body of heater, helps the abundant cracking of tar, and the calorific value of biomass gasified gas obviously improves;
3, the utility model can be set to removable structure, helps cleaning more and safeguards the long-term good work status of maintenance vapourizing furnace.
4, the utility model is simple in structure, and is easy to implement.
Description of drawings
Fig. 1 is the utility model structural representation;
Fig. 2 is the A-A view of Fig. 1;
Label among the figure: 1 cinder chamber; 2 ash discharging holes; 3 coke tar cracking pipes; 4 return-air standpipes; 5 bodies of heater; 6 bells; 7 biomass materials inlet; 8 circulation tubes; 9 increasers; 10 exhaust standpipes; 11 hot air outlets; 12 heat exchange sleeve; 13 cool air inlets; 14 tar TFLs; 15 liquid sealing pipes; 16 return-air fairleads; 17 gasification gas fairleads; 18 vapor pipes; 19 median septums.
Embodiment
Referring to Fig. 1, Fig. 2; Vertical tubular body of heater 5 is set; Upper portion side wall at body of heater 5 is provided with gasification gas outlet, and gasification gas outlet connects an increaser 9 through being horizontally disposed gasification gas fairlead 17, and the terminal mouth of pipe in the big footpath of increaser 9 is divided into upper tube and lower tube with median septum 19; Upper tube is connected with exhaust standpipe 10, and lower tube is connected with circulation tube 8; It is inner that circulation tube 8 is introduced body of heater in the bottom of body of heater 5, behind the one section return-air standpipe 4 that is arranged on the body of heater center, derives the body of heater outside through one section return-air fairlead 16 that is positioned at the body of heater internal upper part, and be connected with gasification gas fairlead 17; In the bottom of exhaust standpipe 10 " U " formed coke recovery of oil pipe 14 is set; Oil outlet is connected with an end of U-shaped liquid sealing pipe 15 in the bottom of tar TFL 14; The other end of liquid sealing pipe 15 connects coke tar cracking pipe 3, and coke tar cracking pipe 3 is down to the center that tilts to introduce body of heater 5.
In the practical implementation; The corresponding structure setting also comprises: in the outer setting heat exchange sleeve 12 of exhaust standpipe 10; The bottom of heat exchange sleeve 12 is provided with cool air inlet 13, and the top is provided with hot air outlet 11, and it is inner that hot air outlet 11 is introduced body of heater through the air guiding tube; Thereby increase the heated time of gasification gas for increasing length that furnace interior divides, can return-air standpipe 4 be set to spiral tube, spiral tube is set to removable structure with easy cleaning; For increasing coke tar cracking efficient, can in spiral tube, place catalytic media, catalytic media can be the rhombspar of particle diameter 1-5mm; The angle of inclination of coke tar cracking pipe 3 is 2 °～15 °.
The caliber of the upper tube of the terminal a bit of mouth of pipe of increaser that setting is separated by median septum is beneficial to contain the more gasification gas of tar and gets into the cracking of carrying out tar in the stove once more through circulation tube 8 less than the caliber of lower tube.The a bit of caliber in its middle and lower part is approximately the twice of a bit of caliber in top.
In addition; The bottom of vapourizing furnace shown in Fig. 1 is a cinder chamber 1; The sidepiece of cinder chamber 1 is provided with ash discharging hole 2; The top of vapourizing furnace is a bell 6, is biomass material inlet 7 on bell, discharges the back through the air of heat exchange by hot air outlet 11 and in the gas inlet entering stove of body of heater, supplies gasifying biomass to use as vaporized chemical.
The gasification gas that gasifying biomass produces gets into increaser 9 by gasification gas fairlead 17; Gasification gas speed through increaser reduces; Heavier tar sinks under the effect of gravity, contains the more gasification gas of tar and gets into circulation tube 8, return-air standpipe subsequently; The return-air standpipe is on the furnace high-temperature position, and the gas circulation through heating pyrolyze in return-air standpipe 4 gets in the gasification gas fairlead 17; The gasification gas that contains a small amount of tar gets into exhaust standpipe 10; Tar in exhaust standpipe 10 and water gather the bottom of tar TFL 14 after the heat exchange condensation; When the accumulative liquid height is higher than the height liquid seal of liquid sealing pipe 15; Tar that reclaims and water get into coke tar cracking pipe 3 and obtain high-temperature zone cracking and gasification, and water vapour wherein is as gasifying medium.
Gasification gas through purifying is introduced kitchen range through the vapor pipe 18 that is connected tar TFL 14 the other ends.
Claims (4)
1. biomass gasification tar partitioning cycle cracking conversion system; It is characterized in that being provided with vertical tubular body of heater (5); Upper portion side wall at said body of heater (5) is provided with gasification gas outlet, and said gasification gas outlet connects an increaser (9) through being horizontally disposed gasification gas fairlead (17), and the terminal mouth of pipe in the big footpath of said increaser (9) is divided into upper tube and lower tube with median septum; Said upper tube is connected with exhaust standpipe (10), and said lower tube is connected with circulation tube (8); It is inner that said circulation tube (8) is introduced body of heater in the bottom of body of heater (5), behind the one section return-air standpipe (4) that is arranged on the body of heater center, derives the body of heater outside through one section return-air fairlead (16) that is positioned at the body of heater internal upper part, and be connected with gasification gas fairlead (17); Bottom at said exhaust standpipe (10) is provided with " U " formed coke recovery of oil pipe (14); Bottom oil outlet at said tar TFL (14) is connected with an end of U-shaped liquid sealing pipe (15); The other end of said liquid sealing pipe (15) connects coke tar cracking pipe (3), and said coke tar cracking pipe (3) is down to the center that tilts to introduce body of heater (5).
2. biomass gasification tar partitioning cycle cracking conversion system according to claim 1; It is characterized in that outer setting heat exchange sleeve (12) at said exhaust standpipe (10); The bottom of said heat exchange sleeve (12) is provided with cool air inlet (13); The top is provided with hot air outlet (11), and it is inner that said hot air outlet (11) is introduced body of heater through the air guiding tube.
3. biomass gasification tar partitioning cycle cracking conversion system according to claim 1 is characterized in that said return-air standpipe (4) is set to spiral tube, in said spiral tube, places catalytic media, and said catalytic media is that particle diameter is the rhombspar of 1-5mm.
4. biomass gasification tar partitioning cycle cracking conversion system according to claim 1, the angle of inclination that it is characterized in that said coke tar cracking pipe (3) is 2 °～15 °.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011203487463U CN202214341U (en) | 2011-09-16 | 2011-09-16 | Tar separation and circulating cracking conversion device in biomass gasification |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011203487463U CN202214341U (en) | 2011-09-16 | 2011-09-16 | Tar separation and circulating cracking conversion device in biomass gasification |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202214341U true CN202214341U (en) | 2012-05-09 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011203487463U Withdrawn - After Issue CN202214341U (en) | 2011-09-16 | 2011-09-16 | Tar separation and circulating cracking conversion device in biomass gasification |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202214341U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102382688A (en) * | 2011-09-16 | 2012-03-21 | 合肥工业大学 | Device for separating, circulating, cracking and converting biomass gasification tar |
-
2011
- 2011-09-16 CN CN2011203487463U patent/CN202214341U/en not_active Withdrawn - After Issue
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102382688A (en) * | 2011-09-16 | 2012-03-21 | 合肥工业大学 | Device for separating, circulating, cracking and converting biomass gasification tar |
| CN102382688B (en) * | 2011-09-16 | 2013-07-31 | 合肥工业大学 | Device for separating, circulating, cracking and converting biomass gasification tar |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20120509 Effective date of abandoning: 20130731 |
|
| RGAV | Abandon patent right to avoid regrant |