CN103952186A - Downdraft gasifier with tar degrading function - Google Patents
Downdraft gasifier with tar degrading function Download PDFInfo
- Publication number
- CN103952186A CN103952186A CN201410179572.0A CN201410179572A CN103952186A CN 103952186 A CN103952186 A CN 103952186A CN 201410179572 A CN201410179572 A CN 201410179572A CN 103952186 A CN103952186 A CN 103952186A
- Authority
- CN
- China
- Prior art keywords
- hearth
- tar
- burner hearth
- vertical flue
- ring
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Landscapes
- Processing Of Solid Wastes (AREA)
Abstract
The invention discloses a downdraft gasifier with a tar degrading function. The downdraft gasifier comprises a hearth, wherein the lower part of the hearth is provided with a ring-shaped throat; a feeding hole is formed in the top of the hearth, and an ash outlet is formed in the bottom of the hearth; upper, middle and lower three-level tangential primary air distribution outlets are axially formed in the wall above the ring-shaped throat of the hearth; a tubular fire grate is arranged between the ring-shaped throat at the lower part of the hearth and the ash outlet at the bottom and is formed by hollow steel tubes spaced from each other; holes as secondary air distribution outlets are drilled in the hollow steel tubes; a vertical flue is arranged outside the hearth; one end of a horizontal flue flush with the tubular fire grate is communicated with the hearth and the other end is communicated with the vertical flue; a gas outlet is formed in the upper part of the vertical flue; a calcium base catalyst jet device is arranged at the top of the vertical flue. The downdraft gasifier has a simple structure, has a tar self-purifying capacity and can ensure that the tar in the gasified gases is fully decomposed before leaving the hearth, thus obtaining the gasified gases with relatively high quality.
Description
Technical field
The present invention relates to a kind of down-draft type gasifying furnace with tar degradation function, belong to changing rejected material to useful resource clean utilization technical field.
Background technology
At present, the disposal of waste is that society is badly in need of the great difficult problem solving, and wherein gasification technology is the method for disposing a kind of clean and effective of waste.Waste gasification is waste to be placed under the environment of a high-temperature low-oxygen to carry out pyrolytic gasification in the devices such as fixing vapourizing furnace, thereby obtains a kind of method of inflammable gas.In numerous vapourizing furnaces, fixed bed is simple in structure, easy to operate with it, fuel tolerance is wide, invest the advantage such as low occupies critical role.Traditional fixed-bed gasification furnace mainly comprises updraft type fixed-bed gasification furnace and downdraft fixed-bed gasification furnace, but all there is very large problem in order first two vapourizing furnace, as due to shorter at residing time in furnace, the coal-tar middle oil content of gasification gas is higher, after temperature reduces, easily stick at burner hearth back-end ductwork and form and stop up, be unfavorable for the steady running of vapourizing furnace.And owing to containing tar in gasification gas, increase the difficulty of gasification gas later purification processing.Therefore, urgent need will be developed a kind of vapourizing furnace with tar self-purification ability, has carried out sufficient decomposition with the tar that ensures to gasify in gas before leaving burner hearth, thereby obtains the gasification gas of higher quality.
Summary of the invention
The object of the invention is to propose a kind of down-draft type gasifying furnace with tar degradation function for solving the coal-tar middle oil too high levels of waste gasification process.
The down-draft type gasifying furnace with tar degradation function of the present invention comprises burner hearth, lower furnace portion has ring-type reducing, there is material inlet at roof of the furnace, ash output hole is arranged at bottom, on the wall above the reducing of burner hearth ring-type, be provided with vertically three grades of tangential air distribution outlets of upper, middle and lower, between the ring-type reducing of lower furnace portion and bottom deslagging mouth, be equipped with tube-typed grate, tube-typed grate is made up of the hollow steel tube of each interval, hollow steel tube on above, be drilled with the hole as secondary air distribution outlet, burner hearth has vertical flue outward, one end of the horizontal flue concordant with tube-typed grate is communicated with burner hearth, the other end is communicated with vertical flue, air outlet is arranged at the top at vertical flue, top is provided with calcium based catalysts jet apparatus.
In the present invention, the every one-level in described three grades of tangential air distribution outlets of upper, middle and lower circumferentially all has 3-5 tangential air distribution outlet along burner hearth.
The present invention has following features: material is sent into burner hearth from roof of the furnace opening for feed, in decline process, mix with the wind that once gasifies, and carry out pyrolytic gasification through high-temperature zone, upper, middle and lower three level air-distributions that arrange vertically enter in stove with tangential manner, in stove, form an eddy flow region, contributed to extend the residence time of material in high-temperature zone; The fire grate upper space that is arranged in of second gasification wind forms a local fluidisation area, not only contributes to fall ash, and can ensure that fixed carbon is gasified totally, and makes bed remain on one 750 DEG C above high temperature, the degraded of the coal-tar middle oil composition of gas that contributes to gasify.Vertically the layout of flue can extend the residence time of gasification gas, and calcium based catalysts sprays the thorough degraded that can effectively realize the coal-tar middle oil composition of synthetic gas.
The present invention is simple in structure, has tar self-purification ability, can ensure that the tar gasifying in gas had carried out sufficient decomposition before leaving burner hearth, thereby obtain the gasification gas of higher quality.
Brief description of the drawings
Fig. 1 is the down-draft type gasifying furnace structural representation with tar degradation function of the present invention.
Fig. 2 is tube-typed grate vertical view.
Fig. 3 is the tangential air distribution outlet schematic diagram of arbitrary level.
Embodiment
With reference to Fig. 1, the down-draft type gasifying furnace with tar degradation function of the present invention, comprise burner hearth 1, lower furnace portion has ring-type reducing, there is material inlet 12 at roof of the furnace, ash output hole 7 is arranged at bottom, on the burner hearth wall above the reducing of burner hearth ring-type, be provided with vertically three grades of tangential air distribution outlets 2 of upper, middle and lower, 3, 4, every one-level circumferentially all has 4 tangential air distribution outlets (example as shown in Figure 2) along burner hearth, the wind that can make once to gasify is tangentially injected in stove from the upper, middle and lower three of furnace wall, in stove, form an eddy flow region, be conducive to gasifying medium and material and carry out good mixing, and extend the residence time of material in high-temperature zone.Between the ring-type reducing of lower furnace portion and bottom deslagging mouth 7, be equipped with tube-typed grate 6, tube-typed grate 6 is made up of the hollow steel tube of each interval, gap between each steel pipe, be beneficial to ash discharge, being drilled with as shown in hole 5(Fig. 3 of secondary air distribution outlet on above of hollow steel tube), in steel pipe, pass into air, gasifying medium in steel pipe sprays in stove with higher flow velocity through via hole, form second gasification wind, higher wind speed can, by tube-typed grate 6 goods fluid of local space above, form a local fluidization district.This design not only can make lime-ash fall into smoothly ash output hole 7, and is conducive to being gasified totally of bed bottom fixed carbon, has greater advantage for the gasification temperature in this region of raising and the output of minimizing tar.Burner hearth has vertical flue 9 outward, and one end of the horizontal flue 8 concordant with tube-typed grate is communicated with burner hearth, and the other end is communicated with vertical flue 9, has air outlet 10 on the top of vertical flue, and top is provided with calcium based catalysts jet apparatus 11.
When normal work, material enters burner hearth by material inlet, in decline process, in stove, form eddy flow disturbance with mixed being incorporated in of the once gasification wind tangentially entering in stove, to ensure that material is dried and pyrolysis fully in high-temperature zone, then material drops on tube-typed grate and forms and pile up bed, and second gasification wind can make lower bed layer form a local fluidization region, facilitates the smooth discharge of lime-ash.In addition, second gasification wind can also promote the complete oxidation of bed bottom fixed carbon, thereby ensures that bed temperature maintains more than 750 DEG C.In the time of gasification gas process bed, tar ingredients wherein at high temperature can further be decomposed, and has reduced to a certain extent the tar content of gasification gas.The ash of bed bottommost falls into ash output hole through the space between tube-typed grate, and then enters ash bucket collection.Gasification gas enters vertical flue by horizontal flue after bed, due to the effect of gravity, the fly ash granule that carries out with gas drops to the bottom of vertical flue, the purification of the gas that is conducive to gasify, and gasification gas leaves burner hearth through air outlet, vertical flue top.Calcium based catalysts spray into the second pyrolysis that can further promote tar, to ensure that tar fully decomposed before leaving burner hearth, thereby improved the quality of outlet gasification gas.
Claims (2)
1. there is the down-draft type gasifying furnace of tar degradation function, it is characterized in that comprising burner hearth (1), lower furnace portion has ring-type reducing, there is material inlet (12) at roof of the furnace, ash output hole (7) is arranged at bottom, on the wall above the reducing of burner hearth ring-type, be provided with vertically three grades of tangential air distribution outlets (2 of upper, middle and lower, 3, 4), between the ring-type reducing of lower furnace portion and bottom deslagging mouth (7), be equipped with tube-typed grate (6), tube-typed grate (6) is made up of the hollow steel tube of each interval, hollow steel tube on above, be drilled with the hole (5) as secondary air distribution outlet, burner hearth has vertical flue (9) outward, one end of the horizontal flue (8) concordant with tube-typed grate is communicated with burner hearth, the other end is communicated with vertical flue (9), air outlet (10) is arranged at the top at vertical flue, top is provided with calcium based catalysts jet apparatus (11).
2. the down-draft type gasifying furnace with tar degradation function according to claim 1, is characterized in that the every one-level in described three grades of tangential air distribution outlets of upper, middle and lower (2,3,4) circumferentially all has 3-5 tangential air distribution outlet along burner hearth.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410179572.0A CN103952186B (en) | 2014-04-30 | 2014-04-30 | There is the down-draft type gasifying furnace of tar degradation function |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410179572.0A CN103952186B (en) | 2014-04-30 | 2014-04-30 | There is the down-draft type gasifying furnace of tar degradation function |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103952186A true CN103952186A (en) | 2014-07-30 |
| CN103952186B CN103952186B (en) | 2015-07-29 |
Family
ID=51329546
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410179572.0A Active CN103952186B (en) | 2014-04-30 | 2014-04-30 | There is the down-draft type gasifying furnace of tar degradation function |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN103952186B (en) |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104774650A (en) * | 2015-03-24 | 2015-07-15 | 浙江大学 | U-shaped fixed bed gasification-catalytic reaction device with tar degradation function |
| CN107267219A (en) * | 2017-08-01 | 2017-10-20 | 中国科学院工程热物理研究所 | The circulating fluidized bed gasification device and gasification process of tangential air distribution |
| CN110003953A (en) * | 2019-03-27 | 2019-07-12 | 湖南人文科技学院 | Air distributing device and gasification furnace with it |
| CN110006048A (en) * | 2019-03-27 | 2019-07-12 | 湖南大学 | Integral type gasification furnace |
| CN110003952A (en) * | 2019-03-27 | 2019-07-12 | 湖南人文科技学院 | Air distribution system and gasification furnace with it |
| CN110260328A (en) * | 2019-07-03 | 2019-09-20 | 诸城市宏利圣得环境科技有限公司 | A kind of house refuse smokelessly exempts from the vertical pyrolysis gasification furnace of oil |
| CN111826201A (en) * | 2020-06-10 | 2020-10-27 | 山东大学 | Process, system and application for flash pyrolysis gasification and tar removal of biomass |
Citations (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO1987004453A1 (en) * | 1986-01-22 | 1987-07-30 | A. Ahlstrom Corporation | Method and apparatus for gasifying carbonaceous material |
| CN2055908U (en) * | 1989-10-17 | 1990-04-11 | 乔庆 | Semi-gas dual-purpose stove for cooking and warming |
| CN2124916U (en) * | 1992-03-25 | 1992-12-16 | 北京科技大学 | Pulverulent coal gasification burner for blast furnace wind inlet spray |
| CN201031216Y (en) * | 2007-03-21 | 2008-03-05 | 华北电力大学 | Multifunctional biomass gasifying device |
| CN201046953Y (en) * | 2007-05-14 | 2008-04-16 | 佛山市科达能源机械有限公司 | Circulating fluidized bed gas generating furnace |
| CN201530811U (en) * | 2009-08-20 | 2010-07-21 | 武汉凯迪控股投资有限公司 | Tar cracking unit of plasma gasification furnace |
| CN101825293A (en) * | 2009-04-23 | 2010-09-08 | 张家界三木能源开发有限公司 | Integrated composite gasification furnace |
| CN201704284U (en) * | 2010-03-04 | 2011-01-12 | 黄小川 | Novel straw gasification furnace without tar emission |
| US20120151839A1 (en) * | 2010-12-21 | 2012-06-21 | Matthew Young | Gasifier |
| CN203346347U (en) * | 2013-06-25 | 2013-12-18 | 山东百川同创能源有限公司 | Plasma gasification furnace |
| CN203923116U (en) * | 2014-04-30 | 2014-11-05 | 浙江大学 | A kind of down-draft type gasifying furnace with tar degradation function |
-
2014
- 2014-04-30 CN CN201410179572.0A patent/CN103952186B/en active Active
Patent Citations (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO1987004453A1 (en) * | 1986-01-22 | 1987-07-30 | A. Ahlstrom Corporation | Method and apparatus for gasifying carbonaceous material |
| CN2055908U (en) * | 1989-10-17 | 1990-04-11 | 乔庆 | Semi-gas dual-purpose stove for cooking and warming |
| CN2124916U (en) * | 1992-03-25 | 1992-12-16 | 北京科技大学 | Pulverulent coal gasification burner for blast furnace wind inlet spray |
| CN201031216Y (en) * | 2007-03-21 | 2008-03-05 | 华北电力大学 | Multifunctional biomass gasifying device |
| CN201046953Y (en) * | 2007-05-14 | 2008-04-16 | 佛山市科达能源机械有限公司 | Circulating fluidized bed gas generating furnace |
| CN101825293A (en) * | 2009-04-23 | 2010-09-08 | 张家界三木能源开发有限公司 | Integrated composite gasification furnace |
| CN201530811U (en) * | 2009-08-20 | 2010-07-21 | 武汉凯迪控股投资有限公司 | Tar cracking unit of plasma gasification furnace |
| CN201704284U (en) * | 2010-03-04 | 2011-01-12 | 黄小川 | Novel straw gasification furnace without tar emission |
| US20120151839A1 (en) * | 2010-12-21 | 2012-06-21 | Matthew Young | Gasifier |
| CN203346347U (en) * | 2013-06-25 | 2013-12-18 | 山东百川同创能源有限公司 | Plasma gasification furnace |
| CN203923116U (en) * | 2014-04-30 | 2014-11-05 | 浙江大学 | A kind of down-draft type gasifying furnace with tar degradation function |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104774650A (en) * | 2015-03-24 | 2015-07-15 | 浙江大学 | U-shaped fixed bed gasification-catalytic reaction device with tar degradation function |
| CN107267219A (en) * | 2017-08-01 | 2017-10-20 | 中国科学院工程热物理研究所 | The circulating fluidized bed gasification device and gasification process of tangential air distribution |
| CN107267219B (en) * | 2017-08-01 | 2023-05-23 | 中国科学院工程热物理研究所 | Tangential air distribution circulating fluidized bed gasification device and gasification method |
| CN110003953A (en) * | 2019-03-27 | 2019-07-12 | 湖南人文科技学院 | Air distributing device and gasification furnace with it |
| CN110006048A (en) * | 2019-03-27 | 2019-07-12 | 湖南大学 | Integral type gasification furnace |
| CN110003952A (en) * | 2019-03-27 | 2019-07-12 | 湖南人文科技学院 | Air distribution system and gasification furnace with it |
| CN110260328A (en) * | 2019-07-03 | 2019-09-20 | 诸城市宏利圣得环境科技有限公司 | A kind of house refuse smokelessly exempts from the vertical pyrolysis gasification furnace of oil |
| CN111826201A (en) * | 2020-06-10 | 2020-10-27 | 山东大学 | Process, system and application for flash pyrolysis gasification and tar removal of biomass |
Also Published As
| Publication number | Publication date |
|---|---|
| CN103952186B (en) | 2015-07-29 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN103952186B (en) | There is the down-draft type gasifying furnace of tar degradation function | |
| US6960234B2 (en) | Multi-faceted gasifier and related methods | |
| CN101985568B (en) | Two-stage oxygen supply dry slag removal pressurized gas flow bed gasification furnace | |
| CN105885950B (en) | A kind of three combination pyrolytic gasifications of solid waste and coke tar cracking integral system | |
| CN201010626Y (en) | Biomass high-energy high-cleanness cyclone bed combustion partitioned gasifying device | |
| CN201218507Y (en) | Plasma and calcium oxide cooperation-gasified rubbish biomass gasification equipment | |
| US20060180459A1 (en) | Gasifier | |
| CN203923116U (en) | A kind of down-draft type gasifying furnace with tar degradation function | |
| CN110616089B (en) | Gasification device for producing synthesis gas from high-moisture organic material | |
| CN204509222U (en) | A kind of U-shaped fixed bed gasification-catalyst reaction device with tar degradation function | |
| CN101955802A (en) | Pyrolysis and gasification cracking furnace for solid biomass | |
| CN111054272A (en) | Fluidized bed gasification reaction apparatus and method | |
| KR102221048B1 (en) | Dual fluidized bed reacting system with low oxygen recycle line of flue gas without oxygen | |
| CN203065417U (en) | Three-section authigenic flow guide groove type continuous pyrolysis gasification furnace for bulk rubbish combustible material | |
| CN205740917U (en) | A kind of solid waste three combination pyrolytic gasification and coke tar cracking integral system | |
| CN111234875A (en) | Preparation method and preparation system for preparing synthetic gas from RDF-5 fuel and fluidized bed gasification RDF-5 | |
| CN104774650B (en) | There is the U-shaped fixed bed gasification-catalyst reaction device of tar degradation function | |
| CN103540363A (en) | Secondary gasification treatment method for oil residue caused in gas production | |
| CN102220173A (en) | Biomass gasifier with fixing bed and air distribution process thereof | |
| CN104263419A (en) | Coal pyrolysis and gasification polygeneration process based on circulating fluidized bed and coal pyrolysis and gasification polygeneration system based on circulating fluidized bed | |
| CN210856014U (en) | Fluidized bed gasification furnace | |
| CN204151306U (en) | A kind of coal pyrolytic gasified polygenerations systeme based on circulating fluidized bed | |
| GB2472610A (en) | Gasification Reactor with vertical grates | |
| CN201530805U (en) | Sleeve-type plasma gasification furnace | |
| CN205893175U (en) | Garbage gasification furnace |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |