CN207918766U - A kind of gasification furnace preventing slagging and thermal energy high efficiente callback - Google Patents
A kind of gasification furnace preventing slagging and thermal energy high efficiente callback Download PDFInfo
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- CN207918766U CN207918766U CN201820001490.0U CN201820001490U CN207918766U CN 207918766 U CN207918766 U CN 207918766U CN 201820001490 U CN201820001490 U CN 201820001490U CN 207918766 U CN207918766 U CN 207918766U
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Abstract
The utility model is related to a kind of gasification furnaces preventing slagging and thermal energy high efficiente callback, it includes reative cell, the useless pot cooling chamber below the reative cell and the shock chamber below the useless pot cooling chamber, wherein, the reative cell is used to coal gasification obtaining raw gas and lime-ash；The useless pot cooling chamber includes radiation waste pot, and the radiation waste pot is set as cylindrical shape radiation waste pot and is connected to the useless pot of cone shaped radiation of the cylindrical shape radiation waste pot bottom, forms the vertical passage of recycling raw gas and lime-ash heat；The shock chamber is located at radiation waste pot lower part, including chilling ring, down-comer, slag bathing pool and brokenly bubble plate.The gasification furnace high efficiente callback gasification generate heat while can ensure dust burdening in lower level, and can prevent radiation waste pot at runtime easily by lime-ash block and corrode the problem of.
Description
Technical field
The utility model belongs to coal chemical technology, and in particular to one kind can prevent slagging and thermal energy high efficiente callback utilizes
Gasification furnace.
Background technology
Now common external ripe large-scale Coal Gasification Technology mainly has Texaco's water coal slurry pressurized gasification technology, SHELL dry
Coal dust gasification technology, GSP dry coal powder pressure gasifying technologies；Domestic large size Coal Gasification Technology mainly has multi-nozzle opposed water-coal-slurry
The peaceful coal stove dry coal powder pressure gasifying technology of pressurized gasification technology, Shenhua, space flight dry coal powder pressure gasifying technology.Except SHELL gives up pot
Outside the unique a set of full pot destroying process gasification technology of Texaco stove of flow gasification technology and the whole world, other entrained flow bed gasification technologies are
Chilling process gasification technology.Chilling process is for pot destroying process, and Carbureted heat energy is using low, water resource waste is serious.It is useless
In contrast, Carbureted heat energy utilization rate is high for the gasification technology of pot flow, can generate middle high-pressure steam and join for advanced coal gasification
Close cycle generating system.
The SHELL gasification furnaces of existing commercial Application are the gasification furnace of slag, qi leel stream, on gasification burner tip is located in gasification furnace
Portion, 1400-1600 DEG C of synthesis gas after export, first use postorder to purify partially synthetic gas after cooling and are swashed at the top of vaporizer
When being cooled to 900 DEG C or so, useless pot recycling heat is entered back into；And gasify after temperature in 1400-1600 DEG C of high temperature sludge then by vaporizer
Bottom is introduced directly into slag bathing pool Quench.Not only device structure is complicated, investment cost is high for this technology, and after being quenched because of synthesis gas
Just enter useless pot and high temperature sludge thermal energy is not fully utilized, keeps a large amount of high-grade heat energy recovery rate poor.Using full pot destroying process
Texaco's water coal slurry pressurized gasification technology, heat utilization rate is high, but since using water-coal-slurry as gasified raw material, there are coal quality adaptations
The problems such as property is poor, effective Gas content is low.
Simultaneously in practice, it has been found that useless pot in the gasification furnace of pot destroying process there is easily blocked and corroded etc. by lime-ash to ask
Topic.
Utility model content
In view of the above-mentioned problems, the purpose of this utility model provides a kind of gasification furnace preventing slagging and thermal energy high efficiente callback,
To solve after existing gasification furnace coal dust firing, heat utilization ratio is low, goes out that gasification furnace raw gas dustiness is high and radiation waste pot is easily tied
The problems such as slag blocks.
To achieve the above object, the utility model adopts the following technical solution：
A kind of gasification furnace preventing slagging and thermal energy high efficiente callback comprising reative cell, below the reative cell
Useless pot cooling chamber and the shock chamber below the useless pot cooling chamber, the reative cell be used for by coal gasification obtain raw gas and
Lime-ash；The useless pot cooling chamber includes radiation waste pot, and the radiation waste pot is set as cylindrical shape radiation waste pot and is connected to described
The useless pot of the cone shaped radiation of cylindrical shape radiation waste pot bottom, forms the vertical passage of recycling raw gas and lime-ash heat, the circle
Tubular radiation waste pot is connected with the reative cell bottom, and the bottom of the useless pot of the cone shaped radiation is equipped with slag airway；It is described
Shock chamber is located at radiation waste pot lower part, including chilling ring, down-comer and for collect lime-ash and the chilling ring spray it is sharp
The slag bathing pool of cold water, the upper end of the down-comer are connected with the lower end of the slag airway, and the lower end of the down-comer is extend into
In the slag bathing pool, the chilling ring is located at the junction of the slag airway and the down-comer, in the down-comer and institute
It states and is provided with multilayer brokenly bubble plate between Quench chamber enclosure.
Preferably, the angle of the side wall and the radiation waste pot of the useless pot of the cone shaped radiation in the radiation waste pot is 20 °
To 60 °, preferably 30 ° to 50 °, such as 45 °, the give up height ratio of pot of the cylindrical shape radiation waste pot and the cone shaped radiation is
2 to 10, such as 4.
Plus useless pot cooling chamber on the basis of existing chilling process, the heat that fully recycling gasification generates generates saturation
Steam can be used for generating electricity.
Since flow velocity tapers into the top-down flow process of raw gas and lime-ash that is formed in vaporizer, cause
Flowing instability, the disturbance of this air-flow lead to the inner wall of the useless pot of the continuous impact radiation of lime-ash in molten condition, cause interior
Wall deposits the blocking that a large amount of dusts make heat transfer effect be deteriorated and lead to useless pot.
Technical solution according to the present utility model, the radiation waste pot in the pot cooling chamber of giving up includes cylindrical shape radiation waste pot and circle
Cone of radiation is given up pot, and this arrangement causes the diameter in the channel of raw gas and lime-ash to taper into, and forms a kind of tapered air-flow
Channel so that keep flow speed stability in the top-down flow process of raw gas and lime-ash formed in vaporizer, do not formed big
The disturbance of amount solves the problems, such as that radiation waste pot is easy slagging and blocks.And this radiation waste pot for preventing slagging design it is simple,
It is at low cost to be suitable for industrialized production.
Preferably, the useless pot cooling chamber further includes nozzle, and the nozzle is located at the cone shaped radiation of the radiation waste pot
In the middle part of useless pot, be along the circumferential direction distributed, for after recovered heat raw gas and lime-ash sprayed, washed.According to not
The characteristics of with coal raw material, by adjusting water spray, the nozzle can carry out the raw gas after pot heat exchange of giving up further
Washing and Quench reduce the dust burdening in raw gas in subsequent process.
Preferably, it is provided with multigroup vibrator from top to bottom outside the useless pot cooling chamber, the spoke is deposited on for
The lime-ash vibration penetrated on useless pot is gone down.After long-play gasification furnace, it can be shaken to radiation waste pot using vibrator
It beats, to remove the lime-ash on radiation waste pot inner wall, the vibrator for example can be the common mechanical oscillation of technical field
Device.
Preferably, it is provided with flux shielding between the reative cell bottom and the cylindrical shape radiation waste pot of the radiation waste pot
Screen, the flux shielding screen is coiled into cylindrical shape by water pipe, and high-temperature resistant thermal insulating material layer is arranged in the flux shielding screen inner surface.
Preferably, the bottom of the bottom outside of the cylindrical shape flux shielding screen and the slag airway is respectively arranged with expansion
Section, for preventing equipment caused by causing mutually to squeeze due to the temperature difference of different zones when the gasification furnace is driven from damaging
It is bad, and gas and lime-ash in pot can be prevented to be spilled over to outside useless pot.
Preferably, the cylindrical shape radiation waste pot of the radiation waste pot and the useless pot of cone shaped radiation are respectively set to cylindrical shape water
Cold wall and conical water-cooling wall.
Preferably, radial water-cooling wall is additionally provided in the cylindrical shape radiation waste pot, the radial direction water-cooling wall is by multigroup
Water pipe is formed along the cylindrical shape radiation waste pot arranged radially, and every group of water pipe is made of 3-10 root water pipes.Preferably, the radial direction
The lower part of water-cooling wall is provided with water knockout drum, for make radial water-cooling wall enter water be introduced into water knockout drum again via water knockout drum distribute into
Enter the water pipe to the radial water-cooling wall, the top of the radial direction water-cooling wall is additionally provided with carbonated drink collector.
Preferably, the reative cell is set as water-cooling wall to make full use of heat when reaction and prevent reative cell from crossing thermal conductivity
Cause equipment damage.
Compared with prior art, provided by the utility model to prevent the gasification furnace of slagging and thermal energy high efficiente callback with following
Advantageous effect：
(1) as a result of useless pot cooling chamber, the heat of coal gasification generation is can make full use of, solves existing gasification furnace
The low problem of heat utilization ratio after coal dust firing；
(2) pass through the combination of cylindrical shape radiation waste pot and the useless pot of cone shaped radiation so that when raw gas flows from above to below
Flow speed stability solves the problems, such as the easy slagging of pot of giving up in pot destroying process.
(3) add the combination of nozzle and shock chamber by radiation waste pot, can preferably reduce the dust burdening in raw gas.
Description of the drawings
Fig. 1 is the schematic diagram of the gasification furnace of embodiment according to the present utility model；
Fig. 2 is the cylindrical shape radiation waste pot cross-sectional view in the radiation waste pot of embodiment according to the present utility model；
Fig. 3 is the schematic diagram of the expansion joint of embodiment according to the present utility model.
Specific implementation mode
Below in conjunction with the accompanying drawings to it is provided by the utility model prevent the gasification furnace of slagging and thermal energy high efficiente callback give into
The explanation of one step.
As shown in Figure 1, a kind of gasification furnace preventing slagging and thermal energy high efficiente callback comprising reative cell 1 is located at reative cell
The useless pot cooling chamber 2 of 1 lower section and the shock chamber 3 below useless pot cooling chamber 2.
1 top of reative cell connects gasification burner tip (not shown), further includes reaction chamber enclosure 101, the water outlet of reative cell water-cooling wall
Mouth 102, reative cell water-cooling wall 103, reative cell manhole 104, reative cell water-cooling wall water inlet 105 and reative cell slag-drip opening 106.
Useless pot cooling chamber 2 includes flux shielding screen 201, useless pot outer casing of cooling chamber 202, cylindrical shape radiation waste pot 203, cone
Radiation waste pot 204, nozzle 205, slag airway 206, useless pot cooling chamber manhole 207, useless pot water outlet 208, useless pot water inlet
209, vibrator 210, flux shielding screen water inlet 211, flux shielding screen water outlet 212.Wherein, the useless pot 204 of cone shaped radiation connects
To the bottom of cylindrical shape radiation waste pot 203, the vertical passage of recycling raw gas and lime-ash heat, cylindrical shape radiation waste pot are formed
203 and the cone shaped radiation pot that gives up 204 be set as water-cooling wall.
In the preferred embodiment of the utility model, the give up upper end diameter of pot 204 of cone shaped radiation is more than lower end diameter, and
The give up height ratio of pot 204 of cylindrical shape radiation waste pot 203 and cone shaped radiation is 2~10：1, justify in a preferred embodiment
The give up height ratio of pot 204 of tubular radiation waste pot 203 and cone shaped radiation is 4:1, and cone shaped radiation give up pot 204 side wall with
Radiation waste pot axial angle α is 20 ° to 60 °, in a preferred embodiment cone shaped radiation give up pot 204 side wall and radiation
Useless pot axial angle α is 45 °.This design is so that useless 2 inner space of pot cooling chamber forms a kind of tapered gas channel so that
Flow speed stability is kept in the top-down flow process of raw gas and lime-ash formed in vaporizer 1, does not form violent disturbance,
The molten ash in raw gas is avoided in large quantities with the contact of radiation waste pot inner wall, radiation waste pot is solved and is easy slagging blocking
The problem of.And it is this to prevent the radiation waste pot design of slagging is simple, at low cost to be suitable for industrialized production.
In addition, in order to further prevent slagging, one embodiment according to the present utility model can be in the outer of radiation waste pot
Wall is uniformly distributed multiple vibrators, such as mechanical vibrator known in the art.
One embodiment according to the present utility model further includes nozzle 205 in the give up center of pot 204 of cone shaped radiation,
For being sprayed, being washed to the raw gas through heat exchange.
As shown in Fig. 2, in order to further enhance heat transfer effect, radial direction can also be set in cone shaped radiation gives up pot 204
Water-cooling wall 213.Radial water-cooling wall 213 is made of multigroup water pipe along 203 arranged radially of cylindrical shape radiation waste pot, and every group of water pipe is by 5
Root water pipe forms.A preferred embodiment according to the present utility model, the lower part of radial water-cooling wall 213 are provided with water knockout drum, use
It is introduced into the water pipe that water knockout drum enters radial water-cooling wall via water knockout drum distribution again, diameter in making the water that enters of radial water-cooling wall 213
It is additionally provided with carbonated drink collector to the top of water-cooling wall.
One embodiment according to the present utility model, between 1 bottom of reative cell and the top of cylindrical shape radiation waste pot 203
It is provided with flux shielding screen 201, cylindrical shape is coiled by water pipe, and high-temperature-resistant layer, example are set in the inner surface of flux shielding screen 201
The refractory material being such as made of SiC.
Shock chamber 3 is located at useless 2 lower part of pot cooling chamber, including raw gas outlet 301, shock chamber's side wall 302, down-comer 303,
Brokenly bubble plate 304, slag bathing pool 305, cycle water inlet 306, slag notch 307, chilling ring water inlet 308, gray water outlet 309 and Quench
Ring 310.Wherein, the upper end of down-comer 303 is connected with the lower end of slag airway 206, and the lower end of down-comer 303 extend into slag bathing pool
In 305, chilling ring 310 is located at the junction of slag airway 206 and down-comer 303, and brokenly bubble plate 304 is located at shock chamber's side wall 302
Between down-comer 303.
It, can also be in the bottom of the flux shielding screen 201 of useless pot cooling chamber 2 and slag gas in order to improve the service life of gasification furnace
The bottom of conduit 206 is installed by expansion joint 4.Expansion joint 4 is a kind of compensator, and structure is as shown in figure 3, in 201 He of flux shielding screen
206 lower part of slag airway circumferentially vertical direction weld plate 401, using same method welding gold above metallic plate 401
Belong to plate 402, below the metallic plate 402 at shell extreme direction weld plate 403, the close shell metallic plate 401 above
Weld plate 404 at extreme direction are connected between metallic plate 403 and metallic plate 404 using spring 407.It is equipped on metallic plate 403
Hand hole 406 and flange.It is equipped with baffle 405 in metallic plate 403 and 404 inside of metallic plate, the upper end of baffle 405 is higher than metallic plate
403 lower end, but it is less than metallic plate 402.The lower end of baffle 405 is less than the upper end of metallic plate 404, but is higher than metallic plate 401.
The outside of flux shielding screen 201 and slag airway 206, metallic plate 401, metallic plate 402, metallic plate 403, metallic plate 404 and baffle
High temperature sealing material, such as heat-preservation cotton are filled in the cavity in 405 besieged cities.In this way, during gasifier operation, especially just open
Che Shi, during raw gas and lime-ash flow, temperature gradually rises from top to bottom, and under the action of expanding with heat and contract with cold, slag is protected
Shield screen 201 and slag airway 206 can be extruded, and under the action of expansion joint 4, this extruding force can by metallic plate 401,
402, it 403 and 404 is transmitted in spring 407, forms cushioning effect, avoid flux shielding screen 201 and slag airway 206 is squeezed
Pressure, to improve the service life of gasification furnace.
The course of work for preventing the gasification furnace of slagging and thermal energy high efficiente callback of the utility model is as follows：
In vaporizer 1, coal gasification is obtained into raw gas and lime-ash；
Raw gas and lime-ash are entered via reative cell slag-drip opening 106 in useless pot cooling chamber 2.In useless pot cooling chamber 2, slag
Protection screen 201 is effectively protected useless 2 inlet of pot cooling chamber and is not corroded by high temperature rough gas and lime-ash, and is arranged in slag
The expansion joint 4 of 201 bottom of protection screen can effectively buffer reative cell 1 and be squeezed caused by the temperature difference with useless 2 junction of pot cooling chamber.
The cylindrical shape radiation waste pot 203 and the useless pot 204 of cone shaped radiation and radial water-cooling wall 213 of useless pot cooling chamber 2 can
Fully to be recycled to the heat that coal gasification generates, saturated vapor is generated for power generation etc..The useless pot of the utility model cools down
2 inner space of room forms a kind of tapered gas channel, the raw gas formed in vaporizer 1 and lime-ash is top-down flows over
Flow speed stability is kept in journey, does not form violent disturbance；
Raw gas by heat exchange is sprayed by nozzle 205, is washed, the dust burdening being further reduced in raw gas；
Vibrator 4 is intermittently operated, such as two days early periods of gasifier operation carry out a rapping, in gasification furnace
One day later stage of operation carries out rapping twice, and according to the pressure of the raw gas generated after the type of the coal to be gasified and gasification stokehold
Difference is adjusted rapping frequency and time.
After recycling heat via useless pot cooling chamber 2, the slag airway 206 of raw gas and lime-ash by pot cooling chamber 2 of giving up into
Enter into shock chamber 3.The expansion joint 4 in 206 bottom of slag airway, which is arranged, can effectively buffer useless pot cooling chamber 2 and shock chamber 3
Junction squeezes caused by the temperature difference；
Into shock chamber 3 raw gas and lime-ash by chilling ring 310 carry out Quench after, pass through down-comer 303 enter slag bathe
Pond, further after cooling washing, lime-ash is discharged via slag notch 307, and raw gas passes through after brokenly bubble plate 304 carries out brokenly bubble
It crosses raw gas outlet 301 and enters subsequent handling.
Claims (10)
1. a kind of gasification furnace preventing slagging and thermal energy high efficiente callback comprising reative cell, giving up below the reative cell
Pot cooling chamber and the shock chamber below the useless pot cooling chamber, it is characterised in that：
The reative cell is used to coal gasification obtaining raw gas and lime-ash；
The useless pot cooling chamber includes radiation waste pot, and the radiation waste pot is set as cylindrical shape radiation waste pot and is connected to the circle
The useless pot of the cone shaped radiation of tubular radiation waste pot bottom, forms the vertical passage of recycling raw gas and lime-ash heat, the cylinder
Shape radiation waste pot is connected with the reative cell bottom, and the bottom of the useless pot of the cone shaped radiation is equipped with slag airway；
The shock chamber is located at radiation waste pot lower part, including chilling ring, down-comer and for collecting lime-ash and the Quench
The slag bathing pool of the sprayed chilled water of ring, the upper end of the down-comer is connected with the lower end of the slag airway, under the down-comer
End is extend into the slag bathing pool, and the chilling ring is located at the junction of the slag airway and the down-comer, under described
It is provided with multilayer brokenly bubble plate between drop pipe and shock chamber's side wall.
2. gasification furnace according to claim 1, which is characterized in that the side wall of the useless pot of the cone shaped radiation and the radiation
Useless pot axial angle is 20 ° to 60 °, and the height ratio of the cylindrical shape radiation waste pot and the useless pot of the cone shaped radiation is 2 to 10.
3. gasification furnace according to claim 1, which is characterized in that the useless pot cooling chamber further includes nozzle, the nozzle
Positioned at the cone shaped radiation give up pot in the middle part of, be along the circumferential direction distributed, for after recovered heat raw gas and lime-ash into
Row spray, washing.
4. gasification furnace according to any one of claim 1-3, which is characterized in that outside the radiation waste pot from top to bottom
It is provided with multigroup vibrator, for the lime-ash vibration being deposited on the radiation waste pot to be gone down.
5. gasification furnace according to claim 4, which is characterized in that the reative cell bottom and the cylindrical shape radiation waste pot
Top between be provided with flux shielding screen, the flux shielding screen is coiled into cylindrical shape, and the table in the flux shielding screen by water pipe
High-temperature resistant thermal insulating material layer is arranged in face.
6. gasification furnace according to claim 5, which is characterized in that the bottom of the flux shielding screen and the slag airway
Bottom is respectively arranged with expansion joint.
7. gasification furnace according to claim 6, which is characterized in that the cylindrical shape radiation waste pot and circular cone of the radiation waste pot
Shape radiation waste pot is respectively set to cylinder water-cooling wall and conical water-cooling wall.
8. gasification furnace according to claim 7, which is characterized in that be additionally provided with radial direction in the cylindrical shape radiation waste pot
Water-cooling wall, the radial direction water-cooling wall are made of multigroup water pipe along the cylindrical shape radiation waste pot arranged radially, and every group of water pipe is by 3-
10 water pipe compositions.
9. according to the gasification furnace described in claim 8, which is characterized in that the lower part of the radial direction water-cooling wall is provided with a point water
Device, for making the water that enters of radial water-cooling wall be introduced into the water that water knockout drum enters the radial water-cooling wall via water knockout drum distribution again
The top of pipe, the radial direction water-cooling wall is additionally provided with carbonated drink collector.
10. gasification furnace according to claim 1, which is characterized in that the reative cell is provided with water-cooling wall.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201820001490.0U CN207918766U (en) | 2018-01-02 | 2018-01-02 | A kind of gasification furnace preventing slagging and thermal energy high efficiente callback |
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| CN201820001490.0U CN207918766U (en) | 2018-01-02 | 2018-01-02 | A kind of gasification furnace preventing slagging and thermal energy high efficiente callback |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108102719A (en) * | 2018-01-02 | 2018-06-01 | 神华集团有限责任公司 | A kind of gasification furnace for preventing slagging and thermal energy high efficiente callback |
-
2018
- 2018-01-02 CN CN201820001490.0U patent/CN207918766U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108102719A (en) * | 2018-01-02 | 2018-06-01 | 神华集团有限责任公司 | A kind of gasification furnace for preventing slagging and thermal energy high efficiente callback |
| CN108102719B (en) * | 2018-01-02 | 2023-12-22 | 神华集团有限责任公司 | Gasification furnace capable of preventing slag formation and efficiently recycling heat energy |
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