CN207973711U - Fluidized-bed gasification furnace stable state slag-draining device - Google Patents
Fluidized-bed gasification furnace stable state slag-draining device Download PDFInfo
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- CN207973711U CN207973711U CN201820357713.7U CN201820357713U CN207973711U CN 207973711 U CN207973711 U CN 207973711U CN 201820357713 U CN201820357713 U CN 201820357713U CN 207973711 U CN207973711 U CN 207973711U
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Abstract
The utility model discloses a kind of fluidized-bed gasification furnace stable state slag-draining devices, it includes the scum pipe that connection is arranged on gasification furnace slag-drip opening, the central tube being fixed on inside scum pipe, inside the scum pipe above and below be respectively fixed with several first jet pipes and several second jet pipes.Advantage：1, the central tube inside scum pipe is vertically arranged, and effectively solves the problems, such as that clinker ensures the normal operation of system to the erosive wear at the pipe bend of center, the service life of elongation center's pipe in scum pipe；2, the mode of level-one steam spray, second steam spray and cooling jacket cooling is combined the cooling step by step, it can be achieved that clinker, and to reduce the deslagging temperature of gasification furnace, the slag temperature that can export scum pipe is controlled at 150 200 DEG C；3, it can make to keep pressure usual between scum pipe and high pressure slag bucket by balance pipe, reduce pressure oscillation, promote dreg removing system job stability.
Description
Technical field：
The utility model is related to fluid bed deslagging technique fields, relate in particular to a kind of fluidized-bed gasification furnace stable state deslagging
Device.
Background technology：
It is connected to by scum pipe between fluidized-bed gasification furnace and dreg removing system high pressure slag bucket, high temperature furnace slag is by gasification furnace through row
Slag pipe is expelled to high pressure slag bucket, and central tube is arranged inside scum pipe and is used to blow gasifying agent (steam to gasification furnace center
And oxygen).Existing gasification furnace scum pipe has the following problems：1, central tube is provided entirely in inside scum pipe, in scum pipe
High temperature furnace slag it is more serious to the abrasion at the pipe bend of center, the leakage once central tube elbow is worn, it is necessary to parking area
Reason, influences the run time of system；2, the slag temperature of scum pipe output is at 750 DEG C -850 DEG C or more, to subsequent deslagging system
Uniting, equipment, the design temperature of valve are more demanding, and slag temperature directly determines the design and equipment manufacturing costs of dreg removing system
Height, and the equipment such as valve are easily influenced by high temperature and are damaged；3, stable state deslagging is the key that fluidisation bed operating, can effectively ensure that stream
Change the stabilization of bed bed and further influences operation and the gas composition of fluid bed；Higher deslagging temperature, to fluid bed deslagging
More stringent requirements are proposed for system, and higher reliability will be had by not requiring nothing more than slagging coutrol valve, and higher slag temperature is to row
The abrasion in slag channel can also aggravate, and existing moving bed deslagging technique and gas control deslagging technique not can solve this and ask
Topic.
Utility model content：
The purpose of this utility model is to provide a kind of fluidized-bed gasification furnace that can effectively reduce gasification furnace deslagging temperature is steady
State slag-draining device.
The utility model is implemented by following technical solution：Fluidized-bed gasification furnace stable state slag-draining device comprising connection setting
Scum pipe on gasification furnace slag-drip opening, the central tube being fixed on inside the scum pipe are fixed in the bottom of the scum pipe
There is sealing flange, offer centre bore and mud hole on the sealing flange, the bottom end of the central tube passes vertically through described
Centre bore is placed in outside the scum pipe, and the mud hole bottom end is installed with slagging coutrol valve, and the slagging coutrol valve passes through company
The inlet communication of siphunculus and high pressure slag bucket；It is fixed with closed first jet pipe in several one end in the inner upper of the scum pipe,
It is fixed with closed second jet pipe in several one end in the lower inside of the scum pipe, in the top and bottom of first jet pipe
Several fumaroles are offered, several hole for water sprayings are offered at the top and bottom of second jet pipe.
Further, the communicating pipe is L-shaped pipe, is made of horizontal tube and VERTICAL TUBE the communicating pipe；The VERTICAL TUBE
Top be connected to the discharge port of the slagging coutrol valve, the inlet communication of the outer end of the horizontal tube and the high pressure slag bucket；
It is installed with horizontal gas control transfer valve on the VERTICAL TUBE side wall opposite with the horizontal tube, opposite with the VERTICAL TUBE
Vertical gas control dredge valve is installed on the side wall of the horizontal tube.
Further, the open end of first jet pipe is connected to the first main pipeline outside the scum pipe, in institute
It states and is installed with the first temperature control valve on the first main pipeline, the first sensor of first temperature control valve is placed in described first
The inside of the scum pipe above jet pipe；The open end of second jet pipe with the second main pipeline outside the scum pipe
Connection, is installed with second temperature control valve, the second sensor of the second temperature control valve is set on second main pipeline
The inside of the scum pipe between adjacent first jet pipe and second jet pipe.
Further, it is arranged with cooling jacket on the outer wall of the scum pipe, be arranged in the stage casing of the cooling jacket
There is expansion joint.
Further, it is communicated with balance pipe between the sealing flange and the high pressure slag bucket, on the balance pipe
It is installed with balance pipe control valve.
Further, first jet pipe and second jet pipe, which are fixed with the central tube and the scum pipe, connects
It connects.
The advantages of the utility model：1, the central tube inside scum pipe is vertically arranged, and effectively solves clinker in scum pipe
To the erosive wear problem at the pipe bend of center, the service life of elongation center's pipe ensures the normal operation of system；2, level-one is steamed
The mode of vapour spray, second steam spray and cooling jacket cooling is combined the cooling step by step, it can be achieved that clinker, to reduce
The deslagging temperature of gasification furnace, the slag temperature that can export scum pipe control at 150-200 DEG C, greatly reduce dreg removing system and set
Standby, valve temperature requirement then reduces the grade of required equipment, to reduce equipment investment；3, deslagging can be made by balance pipe
It keeps pressure usual between pipe and high pressure slag bucket, reduces pressure oscillation, promote dreg removing system job stability, by adjusting L-type
The horizontal purge stream of communicating pipe can control effectively to the deslagging rate of gasification furnace.
Description of the drawings：
Fig. 1 is the overall structure diagram of the present embodiment.
Fig. 2 is scum pipe internal structure schematic diagram.
Gasification furnace 1, central tube 3, sealing flange 4, centre bore 4.1, mud hole 4.2, slagging coutrol valve 5, connects scum pipe 2
Siphunculus 6, horizontal tube 6.1, VERTICAL TUBE 6.2, high pressure slag bucket 7, the first jet pipe 8, fumarole 8.1, the second jet pipe 9, hole for water spraying 9.1,
Horizontal gas control transfer valve 10, vertical gas control dredge valve 11, the first main pipeline 12, the first temperature control valve 13, first sensor
13.1, the second main pipeline 14, second temperature control valve 15, second sensor 15.1, cooling jacket 17, expansion joint 18, balance pipe
19, balance pipe control valve 20, fixed ring 21.
Specific implementation mode：
As depicted in figs. 1 and 2, fluidized-bed gasification furnace stable state slag-draining device comprising connection is arranged in 1 slag-drip opening of gasification furnace
On scum pipe 2, the central tube 3 being fixed on inside scum pipe 2,
Be arranged with cooling jacket 17 on the outer wall of scum pipe 2,17 inside of cooling jacket leads to cooling water when work, under into upper
Go out, ensures that scum pipe 2 will not overheat in tapping process；Expansion joint 18 is set in the stage casing of cooling jacket 17, expansion joint 18 can
17 outer wall thermal stress of cooling jacket is effectively absorbed, for compensating the thermal stress inside slagging channel；
It is fixed with closed first jet pipe 8 in several one end in the inner upper of scum pipe 2, in the lower inside of scum pipe 2
It is fixed with closed second jet pipe 9 in several one end, the first jet pipe 8 and the second jet pipe 9, which are fixed with central tube 3 and scum pipe 2, to be connected
It connects, fixing sleeve is equipped with fixed ring 21 on 3 outer wall of central tube, and the blind end of the first jet pipe 8 and the second jet pipe 9 is and fixed ring
21 are fixedly connected, and can effectively be positioned to central tube 3, the stability of enhancing structure, prevent jet pipe and central tube 3 from shaking；
The top and bottom of first jet pipe 8 offer several fumaroles 8.1, the open end of the first jet pipe 8 with outside scum pipe 2
One main pipeline 12 is connected to, and inputs saturated vapor into each first jet pipe 8 by the first main pipeline 12, last steam is by fumarole
8.1 ejections exchange heat with clinker, and the steam after heat exchange ascends into gasification furnace 1 along scum pipe 2 and used as gasifying agent；
The first temperature control valve 13 is installed on first main pipeline 12, the first sensor 13.1 of the first temperature control valve 13 is placed in first
The inside of the scum pipe 2 of 8 top of jet pipe, first sensor 13.1 can detect the top slag temperature of scum pipe 2, then control first
The aperture of temperature control valve 13 controls the spray flux of saturated vapor；
Several hole for water sprayings 9.1 are offered in the top and bottom of the second jet pipe 9, and the open end of the second jet pipe 9 is and deslagging
The second main pipeline 14 connection outside pipe 2, cooling water is sent by the second main pipeline 14 into each second jet pipe 9, last cold
But water is sprayed through hole for water spraying 9.1 carries out spraying cooling to clinker again；It is installed with second temperature control on the second main pipeline 14
Valve 15, the second sensor 15.1 of second temperature control valve 15 are placed in the scum pipe 2 between the first jet pipe 8 and the second jet pipe 9
Inside, second sensor 15.1 can detect the lower part slag temperature of scum pipe 2, so control the aperture of second temperature control valve 15 with
Water spray is controlled, to ensure that clinker is free of liquid water after spraying；
It is fixed with sealing flange 4 in the bottom of scum pipe 2, centre bore 4.1 and mud hole are offered on sealing flange 4
4.2, the bottom end of central tube 3 passes vertically through the outside that centre bore 4.1 is placed in scum pipe 2, and the central tube 3 inside scum pipe 2 is perpendicular
Straight setting effectively solves the problems, such as that clinker is to the erosive wear of 3 elbow of central tube, the use longevity of elongation center's pipe 3 in scum pipe 2
Life, ensures the normal operation of system；
4.2 bottom end of mud hole is installed with slagging coutrol valve 5, slagging coutrol valve 5 by communicating pipe 6 and high pressure slag bucket 7 into
Mouth connection；Clinker in scum pipe 2 enters high pressure slag bucket 7 through mud hole 4.2, slagging coutrol valve 5, communicating pipe 6；In sealing flange
It is communicated with balance pipe 19 between 4 and high pressure slag bucket 7, balance pipe control valve 20 is installed on balance pipe 19；In high pressure slag bucket 7
Excessive gas rises along balance pipe 19, the bottom of scum pipe 2 is entered by balance pipe control valve 20, to the stove of 1 bottom of gasification furnace
Slag carries out loose cooling, ensures that clinker can smoothly enter into mud hole 4.2；
As a preferred option, it is set as L-shaped pipe communicating pipe 6, is made of horizontal tube 6.1 and VERTICAL TUBE 6.2 communicating pipe 6,
The top of VERTICAL TUBE 6.2 is connected to the discharge port of slagging coutrol valve 5, and the outer end of horizontal tube 6.1 connects with the import of high pressure slag bucket 7
It is logical；Be installed with horizontal gas control transfer valve 10 on VERTICAL TUBE 6.2 side wall opposite with horizontal tube 6.1, with 6.2 phase of VERTICAL TUBE
To horizontal tube 6.1 side wall on be installed with vertical gas control dredge valve 11, horizontal gas control transfer valve 10 and vertical gas control are dredged
The input end of valve 11 is connected with low temperature air sources such as carbon dioxide, nitrogen, wherein the low temperature gas being discharged through vertical gas control dredge valve 11
Body can destroy the angle of repose of material, the material in dredging pipeline, and horizontal gas control transfer valve 10 can then blow the material in pipeline
In the feed inlet for entering high pressure slag bucket 7；By 6 structure of L-type communicating pipe, the clinker that can be fallen to avoid scum pipe 2 is directly longitudinally fallen
Enter high pressure slag bucket 7, using solid material angle of repose, passes through horizontal gas control transfer valve 10 and the auxiliary conveying of vertical gas control dredge valve 11
Gas control system can effectively realize the stability contorting to fluid bed deslagging.
Operation principle：When fluid bed clinker drains into scum pipe 2 by the outlet of gasification furnace distribution grid, slag temperature is higher, and about 750
DEG C -850 DEG C or so, in order to prevent the equipment in scum pipe 2 there is weld seam drawing crack since thermal stress is larger, first pass through
First jet pipe 8 sprays saturated vapor to the clinker on 2 top of scum pipe, and saturated vapor is made to exchange heat with high temperature furnace slag, on the one hand
Steam can exchange heat with clinker, generate superheated steam, and enter gasification furnace 1 and used as gasifying agent, reduce gasification agent steam dosage,
The thermal energy in clinker is recycled simultaneously；Water gas reaction, drop can occur with the carbon residue in the clinker of higher temperature for another aspect steam
Residual carbon content in low clinker improves raw coal gasification utilization rate；
When slag temperature is reduced to spraying steam temperature close, spraying steam can not again cool down to clinker, but stove
Slag temperature is still higher, need to continue the water capacity for cooling down and increasing clinker, therefore utilize the second jet pipe 9 to 2 lower part of scum pipe
Clinker shower water carries out two level cooling processing to clinker, and temperature is reduced to corresponding aqueous vapor shielded under 1 operating pressure of gasification furnace
Temperature, clinker water capacity can avoid clinker after increasing and airborne dust occur after fluid bed dreg removing system is discharged, and protect working environment
Well；
In above process, the recirculated cooling water that bottom in and top out is passed through into cooling jacket 17 cools down to scum pipe 2
Processing, further enhances the cooling-down effect of clinker, while can solve the deformation problems that scum pipe 2 is generated by thermal stress；
In above process, slagging coutrol valve 5 and balance management and control valve 20 are in normally open, the clinker in scum pipe 2
Finally enter in high pressure slag bucket 7 through mud hole 4.2, slagging coutrol valve 5 and communicating pipe 6, and gas extra in high pressure slag bucket 7 is then
Rise along balance pipe 19 and enter inside scum pipe 2 through balance pipe control valve 20, can not only solve the problems, such as that gas is stifled, also using this
Air-flow disturbs the clinker of 2 lower part of scum pipe, prevents 2 lower part of scum pipe from building bridge, and enhances the mobility of clinker, and then ensure
Clinker can smoothly enter into inside mud hole 4.2, and so that high pressure slag bucket 7 is connected to pressure balance with scum pipe 2 by balance pipe 19,
And then the fluctuation of fluidized bed lamination difference is effectively controlled, the fluctuation of fluidized-bed temperature is reduced, the risk of fluid bed slagging is reduced；When
When high pressure slag bucket 7 breaks down, closes slagging coutrol valve 5 and balance management and control valve 20 repairs.
The above is only the preferred embodiments of the present utility model only, is not intended to limit the utility model, all in this practicality
Within novel spirit and principle, any modification, equivalent replacement, improvement and so on should be included in the guarantor of the utility model
Within the scope of shield.
Claims (9)
1. fluidized-bed gasification furnace stable state slag-draining device comprising the scum pipe that connection is arranged on gasification furnace slag-drip opening is fixed on
Central tube inside the scum pipe, which is characterized in that sealing flange is fixed in the bottom of the scum pipe, in the sealing
Centre bore and mud hole are offered on flange, the bottom end of the central tube passes vertically through the centre bore and is placed in outside the scum pipe
Portion, the mud hole bottom end are installed with slagging coutrol valve, and the slagging coutrol valve is connected by the import of communicating pipe and high pressure slag bucket
It is logical；It is fixed with closed first jet pipe in several one end in the inner upper of the scum pipe, in the lower inside of the scum pipe
It is fixed with closed second jet pipe in several one end, several fumaroles are offered at the top and bottom of first jet pipe, in institute
It states and offers several hole for water sprayings at the top and bottom of the second jet pipe.
2. fluidized-bed gasification furnace stable state slag-draining device according to claim 1, which is characterized in that the communicating pipe is L-shaped
Pipe, is made of the communicating pipe horizontal tube and VERTICAL TUBE；The top of the VERTICAL TUBE and the discharge port of the slagging coutrol valve connect
It is logical, the inlet communication of the outer end of the horizontal tube and the high pressure slag bucket；In the VERTICAL TUBE side opposite with the horizontal tube
It is installed with horizontal gas control transfer valve on wall, vertical gas control is installed on the side wall of the horizontal tube opposite with the VERTICAL TUBE
Dredge valve.
3. according to any fluidized-bed gasification furnace stable state slag-draining device of claims 1 or 2, which is characterized in that described first
The open end of jet pipe is connected to the first main pipeline outside the scum pipe, and the first temperature is installed on first main pipeline
Control valve is spent, the first sensor of first temperature control valve is placed in the interior of the scum pipe above first jet pipe
Portion；The open end of second jet pipe is connected to the second main pipeline outside the scum pipe, on second main pipeline
It is installed with second temperature control valve, the second sensor of the second temperature control valve is placed in adjacent first jet pipe and institute
State the inside of the scum pipe between the second jet pipe.
4. according to any fluidized-bed gasification furnace stable state slag-draining device of claims 1 or 2, which is characterized in that in the row
It is arranged with cooling jacket on the outer wall of slag pipe, the stage casing of the cooling jacket is provided with expansion joint.
5. fluidized-bed gasification furnace stable state slag-draining device according to claim 3, which is characterized in that in the outer of the scum pipe
It is arranged with cooling jacket on wall, the stage casing of the cooling jacket is provided with expansion joint.
6. according to any fluidized-bed gasification furnace stable state slag-draining device in claim 1,2 or 5, which is characterized in that described
It is communicated with balance pipe between sealing flange and the high pressure slag bucket, balance pipe control valve is installed on the balance pipe.
7. fluidized-bed gasification furnace stable state slag-draining device according to claim 3, which is characterized in that the sealing flange with
It is communicated with balance pipe between the high pressure slag bucket, balance pipe control valve is installed on the balance pipe.
8. fluidized-bed gasification furnace stable state slag-draining device according to claim 4, which is characterized in that the sealing flange with
It is communicated with balance pipe between the high pressure slag bucket, balance pipe control valve is installed on the balance pipe.
9. fluidized-bed gasification furnace stable state slag-draining device according to claim 1, which is characterized in that first jet pipe and institute
The second jet pipe is stated to be fixedly connected with the central tube and the scum pipe.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820357713.7U CN207973711U (en) | 2018-03-16 | 2018-03-16 | Fluidized-bed gasification furnace stable state slag-draining device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820357713.7U CN207973711U (en) | 2018-03-16 | 2018-03-16 | Fluidized-bed gasification furnace stable state slag-draining device |
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| CN207973711U true CN207973711U (en) | 2018-10-16 |
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| CN201820357713.7U Active CN207973711U (en) | 2018-03-16 | 2018-03-16 | Fluidized-bed gasification furnace stable state slag-draining device |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110055111A (en) * | 2018-03-16 | 2019-07-26 | 新能能源有限公司 | Fluidized-bed gasification furnace stable state slag-draining device |
| CN114576604A (en) * | 2022-04-07 | 2022-06-03 | 马鞍山市如松冶金科技有限责任公司 | Hot-melt slag gasification boiler heat recovery system and use method thereof |
-
2018
- 2018-03-16 CN CN201820357713.7U patent/CN207973711U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110055111A (en) * | 2018-03-16 | 2019-07-26 | 新能能源有限公司 | Fluidized-bed gasification furnace stable state slag-draining device |
| CN110055111B (en) * | 2018-03-16 | 2024-04-05 | 新能能源有限公司 | Steady state slag discharging device for fluidized bed gasification furnace |
| CN114576604A (en) * | 2022-04-07 | 2022-06-03 | 马鞍山市如松冶金科技有限责任公司 | Hot-melt slag gasification boiler heat recovery system and use method thereof |
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