CN206858505U - Distribution device in gas-fluid for fluidized gasification - Google Patents
Distribution device in gas-fluid for fluidized gasification Download PDFInfo
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- CN206858505U CN206858505U CN201720517144.3U CN201720517144U CN206858505U CN 206858505 U CN206858505 U CN 206858505U CN 201720517144 U CN201720517144 U CN 201720517144U CN 206858505 U CN206858505 U CN 206858505U
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- distribution grid
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- scum pipe
- oxygen jet
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Abstract
The utility model provides a kind of distribution device in gas-fluid for fluidized gasification, including：Distribution grid, distribution grid are the cavity structure of back taper；Scum pipe, one end of scum pipe are connected with distribution grid, and scum pipe connects with cavity structure；Oxygen jet, one end of oxygen jet are connected with distribution grid, and oxygen jet connects with cavity structure；Refeed line, one end of refeed line are connected with distribution grid, and refeed line connects with cavity structure；Stomata, the quantity of stomata are multiple, and for multiple stomatas around the axis circumferential array of distribution grid, spacing of multiple stomatas on distribution grid horizontal plane be equal.Compared with prior art, the utility model has advantages below：Oxygen jet is removed into scum pipe.Fluidized gas, mainly steam, by the stomata on distribution grid, local high velocity air is produced, solid material is fully fluidized, and is sufficiently mixed and chemically reacts with gas.
Description
Technical field
The porous template fluid distributor related to In The Fluidized Bed Coal Gasification Technology is the utility model is related to, specifically, is
A kind of distribution device in gas-fluid for fluidized gasification.
Background technology
Be conventionally used to fluidized bed coal gasifier more using oxygen, steam and other gas mixings it is uniform after pass through fluid distrbution
Device enters fluidized bed, with the biochemical reaction of material hybrid concurrency.Under which, the Temperature Distribution in the close phase section reaction zone of fluid bed
Uniformly, it is unfavorable for improving conversion ratio of the material during gasification reaction.Other In The Fluidized Bed Coal Gasification Technologies, such as ash melt gather qi together
Change technology and UGAS gasification technologies, concentrated using oxygen and enter reaction zone, improved the local temperature of reaction zone, improve material
Conversion ratio during gasification reaction.But because these technologies use single oxygen jet, and oxygen channel is located at scum pipe
It is interior, easily wear.Other single oxygen jet exit gas kinetic energy is larger, and flame easily penetrates the close phase section bed of fluid bed, makes
It is too high into gasification heater outlet temperature, in synthesis gas componentses the problems such as effective Gas content (hydrogen, carbon monoxide etc.) decline.Stream at present
What fluidized bed coal gasification stove downstream cyclonic separator was trapped is back at the furnace wall of fluidized-bed gasification furnace containing carbon fine powder, with fluidisation
The material mixing of the close phase section of bed gasification furnace.Because these reactivities containing carbon fine powder are poor, can not fully be sent out after returning to gasification furnace
Raw secondary response, and then cyclone separator is again introduced into, cause gasification furnace solid material circulating ratio high, increase whole gasification system
System resistance, reduces gasification furnace efficiency of carbon con version.
Utility model content
For in the prior art the defects of, the utility model purpose, which is to provide, a kind of solves being used for for above-mentioned technical problem
The distribution device in gas-fluid of fluidized gasification.
In order to solve the above technical problems, the utility model provides a kind of distribution device in gas-fluid for fluidized gasification, bag
Include：Distribution grid, the distribution grid are the cavity structure of back taper；Scum pipe, one end of the scum pipe connect with the distribution grid
Connect, the scum pipe connects with the cavity structure；Oxygen jet, one end of the oxygen jet are connected with the distribution grid,
The oxygen jet connects with the cavity structure；Refeed line, one end of the refeed line is connected with the distribution grid, described to return
Expects pipe connects with the cavity structure；Stomata, the quantity of the stomata is multiple, and multiple stomatas are in the distribution grid
Axis circumferential array, spacing of multiple stomatas on the distribution grid horizontal plane are equal.
Preferably, the quantity of the oxygen jet is multiple that multiple oxygen jets are distributed around the scum pipe.
Preferably, the angle between the axis of the oxygen jet and distribution grid place plane is 90 °~135 °.
Preferably, the angle between the axis of the refeed line and distribution grid place plane is 45 °~135 °.
Compared with prior art, the utility model has advantages below：Oxygen jet is removed into scum pipe.Fluidized gas, it is main
If steam, by the stomata on distribution grid, local high velocity air is produced, solid material is fully fluidized, and it is abundant with gas
Mixing chemically reacts.Oxygen and steam enter close phase section reaction zone by multiple center oxygen jets, and produce local
High-temperature oxydation area.Finely-ground coke can also dry powder or coal slurry form, reaction zone is entered by center oxygen jet.Cyclone separator
The outlet of fine powder refeed line is located above the oxygen jet of center, and its center axis has angle with distribution grid, it is ensured that fluidisation
The high-temperature oxydation area that fluid bed is back to containing carbon fine powder that bed coal-gasification stove downstream cyclonic separator is trapped.
Brief description of the drawings
By reading the detailed description made with reference to the following drawings to non-limiting example, other spies of the present utility model
Sign objects and advantages will become more apparent upon.
Fig. 1 is the distribution device in gas-fluid structural representation that the utility model is used for fluidized gasification；
Fig. 2 is the distribution device in gas-fluid sectional side view that the utility model is used for fluidized gasification.
In figure：
1- stomata 2- distribution grid 3- scum pipes
4- oxygen jet 5- refeed lines
Embodiment
The utility model is described in detail with reference to specific embodiment.Following examples will be helpful to this area
Technical staff further understands the utility model, but does not limit the utility model in any form.It should be pointed out that to ability
For the those of ordinary skill in domain, without departing from the concept of the premise utility, some changes and improvements can also be made.
As shown in Fig. 1~Fig. 2, it is in back taper that the utility model, which provides a kind of distribution device in gas-fluid for fluidized gasification,
Shape, scum pipe 3 are connected with the bottom of distribution grid 2.Multiple oxygen jets 4, the axis of oxygen jet 4 are provided with around scum pipe 3
Angle between line and the place plane of distribution grid 2 is 90 °~135 °.Sprayed in oxygen the position of cyclone separator fine powder refeed line 5
The top of mouth 4, the angle between the axis of refeed line 5 and the place plane of distribution grid 2 is 45 °~135 °.Gas on distribution grid 2
The distribution form of hole 1 uses concentric circumferences ranking method, and make it that the pitch of holes on horizontal plane is equal.
Oxygen jet 4 is removed scum pipe 3 by the distribution device in gas-fluid that the utility model is used for fluidized gasification.Fluidized gas,
Mainly steam, by the stomata 1 on distribution grid 2, local high velocity air is produced, solid material is fully fluidized, and and gas
It is sufficiently mixed and chemically reacts.Oxygen and steam enter close phase section reaction zone, and generation office by multiple center oxygen jets 4
The high-temperature oxydation area in portion.Finely-ground coke can also dry powder or coal slurry form, reaction zone is entered by center oxygen jet 4.Whirlwind
The outlet of separator fine powder refeed line 5 is located at the top of center oxygen jet 4, and its center axis has angle with distribution grid,
Ensure the high-temperature oxydation area that fluid bed is back to containing carbon fine powder that fluidized bed coal gasifier downstream cyclonic separator is trapped.
Specific embodiment of the utility model is described above.It is to be appreciated that the utility model not office
It is limited to above-mentioned particular implementation, those skilled in the art can make a variety of changes or change within the scope of the claims,
This has no effect on substantive content of the present utility model.In the case where not conflicting, the spy in embodiments herein and embodiment
Sign can be arbitrarily mutually combined.
Claims (4)
- A kind of 1. distribution device in gas-fluid for fluidized gasification, it is characterised in that including：Distribution grid, the distribution grid are the cavity structure of back taper；Scum pipe, one end of the scum pipe are connected with the distribution grid, and the scum pipe connects with the cavity structure；Oxygen jet, one end of the oxygen jet are connected with the distribution grid, and the oxygen jet connects with the cavity structure It is logical；Refeed line, one end of the refeed line are connected with the distribution grid, and the refeed line connects with the cavity structure；Stomata, the quantity of the stomata is multiple, and multiple stomatas are around the axis circumferential array of the distribution grid, Duo Gesuo It is equal to state spacing of the stomata on the distribution grid horizontal plane.
- 2. the distribution device in gas-fluid according to claim 1 for fluidized gasification, it is characterised in that the oxygen jet Quantity to be multiple, multiple oxygen jets are around scum pipe distribution.
- 3. the distribution device in gas-fluid according to claim 1 or 2 for fluidized gasification, it is characterised in that the oxygen Angle between plane where the axis of nozzle and the distribution grid is 90 °~135 °.
- 4. the distribution device in gas-fluid according to claim 1 for fluidized gasification, it is characterised in that the refeed line Angle between plane where axis and the distribution grid is 45 °~135 °.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720517144.3U CN206858505U (en) | 2017-05-10 | 2017-05-10 | Distribution device in gas-fluid for fluidized gasification |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720517144.3U CN206858505U (en) | 2017-05-10 | 2017-05-10 | Distribution device in gas-fluid for fluidized gasification |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206858505U true CN206858505U (en) | 2018-01-09 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720517144.3U Active CN206858505U (en) | 2017-05-10 | 2017-05-10 | Distribution device in gas-fluid for fluidized gasification |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206858505U (en) |
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2017
- 2017-05-10 CN CN201720517144.3U patent/CN206858505U/en active Active
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