CN205258383U - A furnace tail structure that is used for two sections oxygen suppliments to arrange sediment pressurization entrained flow gasifica tion stove futilely - Google Patents
A furnace tail structure that is used for two sections oxygen suppliments to arrange sediment pressurization entrained flow gasifica tion stove futilely Download PDFInfo
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- CN205258383U CN205258383U CN201521009638.8U CN201521009638U CN205258383U CN 205258383 U CN205258383 U CN 205258383U CN 201521009638 U CN201521009638 U CN 201521009638U CN 205258383 U CN205258383 U CN 205258383U
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- burner hearth
- tail structure
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- gas flow
- pressurized gas
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Abstract
The utility model relates to a furnace tail structure that is used for two sections oxygen suppliments to arrange sediment pressurization entrained flow gasifica tion stove futilely, the shock chamber is connected to the below, and truncated conical tip's cavity shape that this structure formed for refractory material piles up is 60 -68's contained angle between furnace tail structure's inside wall and the horizontal plane. Compared with the prior art, the utility model discloses need not carry out overall structure to present entrained flow gasifica tion stove and revise, only need rearrange the refractory material of gasifier furnace afterbody, the solid slag particle can not take place pile up after down from furnace middle and upper clan at furnace afterbody wall, has guaranteed effectively that the solid slag particle enters into the shock chamber through row cinder notch smoothly, has improved two sections working life and efficiency that sediment pressurization entrained flow gasifica tion stove was arranged futilely in the oxygen suppliment to gasification system's security has been promoted.
Description
Technical field
The utility model relates to two sections of dry slag removal pressurized gas flow bed gasification technologies of oxygen supply, especially relate to a kind of forThe burner hearth tail structure of two sections of dry slag removal pressurized gas flow bed gasification furnaces of oxygen supply.
Background technology
Two sections of dry slag removal pressurized gas flow bed gasification furnaces of oxygen supply have high ash melting point coal gasification practicality, automaticityThe feature such as high, controllability is strong, gasification efficiency is high and overall blowdown is little is optimum in current airflow bed gasification furnaceUsing the type of furnace of high ash melting point coal gasification, is the main development direction of Chinese high ash melting point Coal Gasification Technology.
In two sections of dry slag removal pressurized gas flow bed gasification furnaces of oxygen supply, because reaction temperature is controlled in 100 DEG C of ash fusion pointsBelow, generally, between 1250 DEG C～1350 DEG C, deslagging mode is selected dry ash extraction. Existing slag tapping boiler stoveThorax afterbody wall and horizontal direction angle are 45 ° of left and right, and prolonging burner hearth rear wall surface current flake hearth-tapping for melt cinder does not haveImpact. But, when solid slag particle is dropped downwards by upper furnace, understand some and drop on burner hearth afterbody wall,Produce pile up effect, after a large amount of soot particles is piled up, may mutually adhere to the grey piece that forms bulk, cause slag-drip openingStop up.
In the gasified boiler system of operation, burner hearth afterbody deslagging has some setbacks and will cause chamber temperature to raise and formation operationAccident, this just need to carry out important improvement to it in gasification system.
Two sections of dry deslagginves of oxygen supply that Chinese patent CN101985568A discloses coal gas coal technical field add calms the angerFluidized gas producer, comprising: cylindrical bearing shell, be arranged on vaporizer in cylindrical bearing shell, synthetic air coolingBut chamber, mechanical type slag crusher and lock slag ladle, vaporizer and synthesis gas cooling chamber are placed in respectively in cylindrical bearing shellUpper and lower, mechanical type slag crusher is positioned at gasification furnace bottom below, lock slag ladle be positioned at mechanical type slag crusher underSide, but above-mentioned patent is general proposition impact that slag-drip opening angle piles up solid slag, but can notEnsure smooth deslagging and the long-term fortune efficiently of safety and stability of two sections of dry slag removal pressurized gas flow bed gasification furnaces of oxygen supply completelyOK.
Utility model content
The purpose of this utility model is exactly to provide a kind of for two in order to overcome the defect that above-mentioned prior art existsThe burner hearth tail structure of the dry slag removal pressurized gas flow bed gasification furnace of section oxygen supply, can make solid-state slag particle pass through smoothly burner hearthAfterbody, is specially adapted to apply high ash melting point coal gasification, is applicable to two sections of dry slag removal pressurized gas flow bed gasifications of oxygen supplyThe dry ash extraction form of stove.
The purpose of this utility model can be achieved through the following technical solutions:
For the burner hearth tail structure of two sections of dry slag removal pressurized gas flow bed gasification furnaces of oxygen supply, connection shock chamber, below, shouldStructure is the hollow shape that refractory material is piled up the rounding frustum forming, the madial wall of burner hearth tail structure and levelBetween face, be the angle of 60-68 °, thereby can ensure that solid slag, not when burner hearth afterbody wall is piled up, ensuresBurner hearth inner geometry volume is enough large.
As preferred technical scheme, between the madial wall of burner hearth tail structure and horizontal plane, be the angle of 65 °.
The internal diameter of burner hearth tail structure top import department is 2.4～2.8 times of slag-drip opening place, below internal diameter, and its advantage existsDischarge smoothly under the condition of burner hearth in guarantee solid slag, ensure that burner hearth remains on lower water to the heat radiation of shock chamber simultaneouslyFlat.
As preferred technical scheme, the internal diameter of burner hearth tail structure top import department is slag-drip opening place, below internal diameter2.6 doubly.
The exit of described burner hearth tail structure is provided with enlarging, for example, can be horn-like enlarging, can be also certainlyUpper and under the stepped enlarging that increases successively.
Described refractory material is the refractory material of silicon carbide-containing, for example, can adopt high aluminum silicon carbide brick, corundum carbonSiClx brick, it is advantageous that there is very high temperature tolerance, good corrosion resistance, be convenient to the impact in high-temperature ashThe normal duty of lower maintenance.
Compared with prior art, the utility model does not need that existing airflow bed gasification furnace is carried out to overall structure and repaiiesChange, only the refractory material of gasification furnace burner hearth afterbody need to be rearranged, solid slag particle falls from burner hearth middle and upper partAfter lower, can not pile up at burner hearth afterbody wall, effectively ensured that solid slag particle enters into by slag-drip opening smoothly sharpCold house, has improved working life and the efficiency of two sections of dry slag removal pressurized gas flow bed gasification furnaces of oxygen supply, thereby has promoted gasThe security of change system.
The utility model patent, by the research to solid slag powder characteristics, has been verified solid slag in cold conditions experimentAccumulation angle should be greater than 60 °, consider softening under hot conditions of solid slag and fall to burner hearth rear wallAdhesion after on face, we advise selecting between the madial wall of burner hearth tail structure and horizontal plane angle be 65 ° withGuarantee solid slag is not piled up on burner hearth afterbody wall. In the time that angle is less than 60 °, due to softening of indivedual solid slagsAnd adhesive attraction, can make small part lime-ash adhere to, As time goes on, more slag can be piled up, heatAmount is difficult to shed, and makes, between lime-ash, strong bonding occurs, and forms large clinker, and too much large clinker can causeThe obstruction of slag-drip opening, the safety in production of harm gasification furnace. Meanwhile, less angle is asked producing more serious accumulationTopic. In the time that angle is greater than 68 °, lime-ash landing from burner hearth afterbody wall smoothly, still, when angle is excessive,Can make burner hearth internal volume reduce or slag-drip opening diameter becomes large, this will make gasification furnace disposal ability decline orGasification furnace Efficiency Decreasing.
By the research to existing gasification technology and two sections of dry slag removal pressurized gas flow bed gasification technologies of oxygen supply, Wo MenfaExisting, the internal diameter of selecting burner hearth tail structure top import department is the structure of 2.4～2.8 times of slag-drip opening place, below internal diameterCan ensure falling smoothly of lime-ash, keep the heat radiation of gasification furnace burner hearth simultaneously in a relatively very little scope.
The refractory material that selection contains carborundum, as burner hearth afterbody wall surface material, can ensure that wall is in higher temperaturesThe lower normal work of degree, can not melted by high-temperature ash. Select high aluminum silicon carbide brick, corundum carborundum brick etc. to resistance to wearThe refractory material that performance is good, has ensured under solid lime-ash souring the long-term stable operation of burner hearth afterbody wall.
Brief description of the drawings
Fig. 1 is structural representation of the present utility model.
In figure, 1-burner hearth tail structure, 11-refractory material, 12-hollow space, 13-slag-drip opening, 2-shock chamber.
Detailed description of the invention
Below in conjunction with the drawings and specific embodiments, the utility model is elaborated.
Embodiment 1
For the burner hearth tail structure 1 of two sections of dry slag removal pressurized gas flow bed gasification furnaces of oxygen supply, connection shock chamber, below 2,Its structure as shown in Figure 1. In the present embodiment, burner hearth tail structure 1 is for to pile up by refractory material 11 rounding formingThe hollow shape of frustum, centre is hollow space 12, between the madial wall and horizontal plane of burner hearth tail structure 1Be the angle of 65 °. In addition, the internal diameter of burner hearth tail structure top import department is 2.6 of slag-drip opening place, below internal diameterDoubly. In order to facilitate deslagging, the exit of burner hearth tail structure is provided with the slag-drip opening 13 of enlarging shape, at the present embodimentIn, the slag-drip opening 13 of employing is the stepped enlarging increasing successively from top to bottom.
Embodiment 2
For the burner hearth tail structure of two sections of dry slag removal pressurized gas flow bed gasification furnaces of oxygen supply, its structure and embodiment 1Roughly the same, difference is, is the angle of 60 °, stove between the madial wall of burner hearth tail structure and horizontal planeThe internal diameter of thorax tail structure top import department is 2.4 times of slag-drip opening place, below internal diameter.
Embodiment 3
For the burner hearth tail structure of two sections of dry slag removal pressurized gas flow bed gasification furnaces of oxygen supply, its structure and embodiment 1Roughly the same, difference is, is the angle of 68 °, stove between the madial wall of burner hearth tail structure and horizontal planeThe internal diameter of thorax tail structure top import department is 2.8 times of slag-drip opening place, below internal diameter. Burner hearth tail structure belowSlag-drip opening is horn-like enlarging.
Claims (6)
1. for the burner hearth tail structure of two sections of dry slag removal pressurized gas flow bed gasification furnaces of oxygen supply, connection shock chamber, below,It is characterized in that, this structure is the hollow shape that refractory material is piled up the rounding frustum forming, burner hearth tail structureMadial wall and horizontal plane between be the angle of 60-68 °.
2. the burner hearth afterbody for two sections of dry slag removal pressurized gas flow bed gasification furnaces of oxygen supply according to claim 1Structure, is characterized in that, between the madial wall of described burner hearth tail structure and horizontal plane, is the angle of 65 °.
3. the burner hearth afterbody for two sections of dry slag removal pressurized gas flow bed gasification furnaces of oxygen supply according to claim 1Structure, is characterized in that, the internal diameter of described burner hearth tail structure top import department is slag-drip opening place, below internal diameter2.4～2.8 times.
4. the burner hearth afterbody for two sections of dry slag removal pressurized gas flow bed gasification furnaces of oxygen supply according to claim 3Structure, is characterized in that, the internal diameter of described burner hearth tail structure top import department is slag-drip opening place, below internal diameter2.6 doubly.
5. the burner hearth afterbody for two sections of dry slag removal pressurized gas flow bed gasification furnaces of oxygen supply according to claim 1Structure, is characterized in that, the exit of described burner hearth tail structure is provided with horn-like enlarging.
6. the burner hearth afterbody for two sections of dry slag removal pressurized gas flow bed gasification furnaces of oxygen supply according to claim 1Structure, is characterized in that, the exit of described burner hearth tail structure is provided with increase successively stepped from top to bottomEnlarging.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201521009638.8U CN205258383U (en) | 2015-12-07 | 2015-12-07 | A furnace tail structure that is used for two sections oxygen suppliments to arrange sediment pressurization entrained flow gasifica tion stove futilely |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201521009638.8U CN205258383U (en) | 2015-12-07 | 2015-12-07 | A furnace tail structure that is used for two sections oxygen suppliments to arrange sediment pressurization entrained flow gasifica tion stove futilely |
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| Publication Number | Publication Date |
|---|---|
| CN205258383U true CN205258383U (en) | 2016-05-25 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201521009638.8U Expired - Fee Related CN205258383U (en) | 2015-12-07 | 2015-12-07 | A furnace tail structure that is used for two sections oxygen suppliments to arrange sediment pressurization entrained flow gasifica tion stove futilely |
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| Country | Link |
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| CN (1) | CN205258383U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105385474A (en) * | 2015-12-07 | 2016-03-09 | 上海交通大学 | Structure of tail part of hearth of two-stage oxygen supply dry slag removal pressurized entrained-bed gasification furnace |
-
2015
- 2015-12-07 CN CN201521009638.8U patent/CN205258383U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105385474A (en) * | 2015-12-07 | 2016-03-09 | 上海交通大学 | Structure of tail part of hearth of two-stage oxygen supply dry slag removal pressurized entrained-bed gasification furnace |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20160525 Termination date: 20201207 |