CN208776663U - A kind of gasification furnace - Google Patents
A kind of gasification furnace Download PDFInfo
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- CN208776663U CN208776663U CN201821011570.0U CN201821011570U CN208776663U CN 208776663 U CN208776663 U CN 208776663U CN 201821011570 U CN201821011570 U CN 201821011570U CN 208776663 U CN208776663 U CN 208776663U
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- gasification
- furnace body
- inner cylinder
- ring sleeve
- semicoke
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Abstract
The utility model provides a kind of gasification furnace, comprising: furnace body, reaction inner cylinder and ring sleeve；Wherein, the reaction inner cylinder is arranged in the furnace body, the inside hydrogasification area and perimeter for being divided into top to be connected in the space of the furnace interior；The ring sleeve is arranged between reaction inner cylinder and the side wall of the furnace body, the inside semicoke feeding zone for being divided into upper and lower part to be connected to the perimeter and external char Gasification area.In the utility model, by the way that reaction inner cylinder and ring sleeve is arranged in furnace interior, entire gasification furnace is divided into hydrogasification area, semicoke feeding zone and char Gasification area, realize the efficient coupling of hydrogasification and high-temperature semi-coke transporting bed gasification, it ensure that coal dust hydrogasification progress synchronous with hot semicoke transporting bed gasification in gasification furnace, and then greatly improve the direct transformation efficiency of high-temperature semi-coke generated during coal dust hydrogasification.
Description
Technical field
The utility model relates to Coal Gasification Technology fields, in particular to a kind of gasification furnace.
Background technique
Hydrogasification refers to that coal dust and hydrogen react under the conditions of certain pressure and temperature, generates methane, light aromatics
The process of oil product and semicoke.Since total efficiency of carbon con version of hydrogasification reaction only has 50% or so, the yield base of solid semicoke
Originally reach 50% or so of raw coal inlet amount.The phosphorus content of this part high temperature and pressure semicoke is higher than raw coal, has very high exploitation value
Value.
From hydrogasification angle, hydrogasification needs certain hydrogen source, if can be direct by this part semicoke
High-temperature gasification hydrogen manufacturing, other than providing hydrogen source for hydrogasification, it can be achieved that in semicoke carbon Efficient Conversion, while efficiently
Utilize the sensible heat of high-temperature semi-coke.Since hydrogasification is entrained flow gasification, firstly the need of the high temperature for generating hydrogasification
Semicoke is separated from raw gas.In addition, current char Gasification technology be broadly divided into fixed bed gasification, fluidized gasification and
Entrained flow gasification.Analyze from adaptable angle: 1, the semicoke average grain diameter that hydrogasification generates only has 50-200 microns, because
This is not appropriate for fixed bed gasification.2, the half coke heap density that hydrogasification generates only has 200kg/m3 or so, and is cellular
Particulate matter, fluidization characteristic are not therefore yet unsuitable fluidized gasifications very well.3, the volatile matter in semicoke is adding hydrogen mistake
Journey is totally converted, and is difficult to gasify in the air flow bed of short residence time.4, it compared with fixed bed, fluidized bed and air flow bed, transports
Bed mainly realizes the conversion of semicoke by multi-cycle, and ingredient requirement is low, the high-temperature semi-coke Efficient Conversion generated to hydrogasification
Aspect has certain technical advantage.But how by the transporting bed gasification of hydrogasification and high-temperature semi-coke carry out efficient coupling,
It is the technical problem for solving the conversion of hydrogasification semicoke to realize the direct Efficient Conversion of high-temperature semi-coke of hydrogasification generation.
Utility model content
In consideration of it, the utility model proposes a kind of gasification furnaces, it is intended to solve existing gasification furnace difficulty in hydrogasification process
In be difficult to the problem of realizing high-temperature semi-coke Efficient Conversion simultaneously.
The utility model proposes a kind of gasification furnaces, comprising: furnace body, reaction inner cylinder and ring sleeve；Wherein,
The reaction inner cylinder is arranged in the furnace body, for being divided into top to be connected in the space of the furnace interior
Internal hydrogasification area and perimeter；
The ring sleeve is arranged between reaction inner cylinder and the side wall of the furnace body, for dividing the perimeter
The inside semicoke feeding zone and external char Gasification area being connected at upper and lower part.
Further, in above-mentioned gasification furnace, it is described reaction inner cylinder bottom end be connected with the bottom of the furnace body, outside,
And be connected respectively with the inner wall for reacting inner cylinder and the furnace body by connector, upper and lower ends are free end.
Further, in above-mentioned gasification furnace, the height of the ring sleeve is lower than the height for reacting inner cylinder.
Further, in above-mentioned gasification furnace, the height of the ring sleeve is the 1/2-4/5 of the reaction inner cylinder height.
Further, in above-mentioned gasification furnace, the default spacing between the ring sleeve bottom end and the gasification furnace bottom end is small
In the distance between the ring sleeve and the sidewall of the furnace body.
Further, in above-mentioned gasification furnace, the default spacing between the ring sleeve bottom end and the gasification furnace bottom end is
The 1/4-3/4 of its distance between the sidewall of the furnace body.
Further, in above-mentioned gasification furnace, the bottom of furnace body be provided with respectively with the hydrogasification area, the semicoke
Feeding zone and char Gasification area is corresponding plus hydrogen nozzle, blows gas entrance and gasifying agent nozzle.
Further, in above-mentioned gasification furnace, the gasifying agent nozzle and described gas entrance is blowed along the bottom of furnace body
It is distributed in a ring.
Further, in above-mentioned gasification furnace, the spacing of the adjacent gasifying agent nozzle be less than or equal to the ring sleeve with
The 1/2 of distance between the sidewall of the furnace body, the adjacent spacing for blowing gas entrance are less than or equal to the reaction inner cylinder and institute
State 1/2 of distance between ring sleeve side wall.
Compared with prior art, the beneficial effects of the utility model are, gasification furnace provided by the utility model, by
Furnace interior setting reaction inner cylinder and ring sleeve, are divided into hydrogasification area, semicoke feeding zone and semicoke gas for entire gasification furnace
Change area, realizes the efficient coupling of hydrogasification and high-temperature semi-coke transporting bed gasification, ensure that coal dust hydrogasification in gasification furnace
It is synchronous with hot semicoke transporting bed gasification to carry out, and then greatly improve the high-temperature semi-coke generated during coal dust hydrogasification
Direct transformation efficiency.
Detailed description of the invention
By reading the following detailed description of the preferred embodiment, various other advantages and benefits are common for this field
Technical staff will become clear.The drawings are only for the purpose of illustrating a preferred embodiment, and is not considered as practical to this
Novel limitation.And throughout the drawings, the same reference numbers will be used to refer to the same parts.In the accompanying drawings:
Fig. 1 is the structural schematic diagram of gasification furnace provided by the embodiment of the utility model；
Fig. 2 is schematic cross-section of the gasification furnace provided by the embodiment of the utility model along A-A.
Specific embodiment
Preferred embodiments of the present invention are described with reference to the accompanying drawings.It should be understood by those skilled in the art that
It is that these embodiments are used only for explaining the technical principle of the utility model, it is not intended that limit the protection of the utility model
Range.
It should be noted that term " on ", "lower", "left", "right", "inner", "outside" etc. in the description of the present invention,
The direction of instruction or the term of positional relationship are direction based on the figure or positional relationship, this, which is intended merely to facilitate, retouches
It states, rather than indication or suggestion described device or element must have a particular orientation, be constructed and operated in a specific orientation, because
This should not be understood as limiting the present invention.
In addition it is also necessary to explanation, in the description of the present invention, unless otherwise clearly defined and limited, art
Language " installation ", " connected ", " connection " shall be understood in a broad sense, for example, it may be being fixedly connected, may be a detachable connection, or
It is integrally connected；It can be mechanical connection, be also possible to be electrically connected；It can be directly connected, it can also be by between intermediary
It connects connected, can be the connection inside two elements.To those skilled in the art, can understand as the case may be above-mentioned
The concrete meaning of term in the present invention.
As shown in fig.1, being the gasification furnace of the utility model embodiment comprising: furnace body 1, reaction inner cylinder 2 and ring set
Cylinder 3；Wherein, reaction inner cylinder 2 is arranged in furnace body 1, will be entire between the setting of ring sleeve 3 reaction inner cylinder 2 and the side wall of furnace body 1
Gasification furnace point is successively divided into hydrogasification area 11, semicoke feeding zone 121 and char Gasification area 122 from inside to outside, thus
The hydrogasification of coal dust and the gasification of hot semicoke are realized in one gasification furnace simultaneously.
Specifically, furnace body 1 is the main structure of gasification furnace, moulded is a housing member, in the process used
The middle reacting environment as entire gasification reaction.The top of furnace body 1 is provided with gas vent 13, generates for exporting in gasification furnace
Methane-rich gas, it is ensured that the methane-rich gas generated in gasification furnace can be exported rapidly from furnace body 1 in time, and then be guaranteed
The lasting progress of subsequent gasification.The bottom end of furnace body 1 is disposed with outward by center to be added hydrogen nozzle 14, blows gas entrance 15
And gasifying agent nozzle 16；Wherein, add the hydrogasification area 11 in the corresponding furnace body 1 of hydrogen nozzle 14, for spraying into hydrogen into furnace body 1
Gas and coal dust；Semicoke feeding zone 121 in the corresponding furnace body 1 of gas entrance 15 is blowed, for blowing gas to being filled with inside furnace body 1, to promote
It is circulated into the high-temperature semi-coke in semicoke feeding zone 121；Char Gasification area 122 in the corresponding furnace body 1 of gasifying agent nozzle 16, is used
In to gasifying agent is sprayed into inside furnace body 1, can effectively be gasified with the high-temperature semi-coke ensured in char Gasification area 122.
In the present embodiment, hydrogasification area 11 and char Gasification area 122 are uplink reactor, and wherein hydrogasification is upper
Capable entrained-flow reactor, the high methane gas and high-temperature semi-coke of generation separate in gasification furnace upper section space, and subsequent semicoke exists
Enter in semicoke feeding zone 121 under gravity；Semicoke under the drive of gasifying agent nozzle 16 from 121 bottom of semicoke feeding zone into
Enter char Gasification area 122, moves upwards generation gasification reaction in the char Gasification area 122 outside ring sleeve 3.Gasify incomplete
Semicoke and synthesis gas after being detached from semicoke reaction zone 122, the complete semicoke of unreacted redeposits under the effect of gravity
In semicoke feeding zone 121, and then multiple circular response occurs in char Gasification area 122, turns so that semicoke be promoted to reach high
Rate.
Specifically, reaction inner cylinder 2 is arranged inside furnace body 1, lower end is fixed on the bottom end of furnace body 1, and upper end is freely
Space inside furnace body 1 is divided into the hydrogasification area 11 being located inside reaction inner cylinder 2 and is located at outside reaction inner cylinder 2 by end
Region 12, and hydrogasification area 11 and perimeter 12 are interconnected in the top of reaction inner cylinder 2.In gasification, lead to
Setting is crossed 1 bottom of furnace body is corresponding with hydrogasification area 11 plus hydrogen nozzle 14 is from 1 bottom of furnace body penetrating hydrogen and coal dust, with
The entrained-flow reactor flowed up is formed inside reaction inner cylinder 2, and then the coal dust and hydrogen that ensure to react inside inner cylinder 2 exist
Hydrogasification reaction occurs under high-temperature and high-pressure conditions.Meanwhile in order to further ensure that gas reaction inner cylinder 2 in have it is sufficiently high
Flow velocity, coal dust have enough residence times in reaction inner cylinder 2, ensure to react 2 coal dust of inner cylinder simultaneously under the promotion of gas
It can all flow up, the ratio of the height and diameter of reacting inner cylinder 2 is at least 5:1, and then ensure that coal dust in hydrogasification
Reach high efficiency of carbon con version in area 11 as far as possible.In general, coal dust stops in hydrogasification area 11 during hydrogasification
The time is stayed to be maintained at 5-10s.Therefore, according to coal dust treating capacity, corresponding gas flow can be calculated, then according to ratio of height to diameter
The diameter and height in hydrogasification area is calculated.Furthermore, it is generally the case that 90% partial size of the raw materials used coal of hydrogenation reaction is all
At 100 μm hereinafter, the hydrogen of reaction and coal ratio (mass ratio) are controlled 0.2 or more, so that coal dust is anti-in hydrogenation reaction
It answers and guarantees completely to flow up in inner cylinder 2.It is understood that using the air flow bed flowed up, mainly in view of adding
Hydrogenization can generate a large amount of semicoke and deposit downwards naturally, to be more advantageous to the natural separation of semicoke and gas-phase product.
Specifically, ring sleeve 3 be set in reaction inner cylinder 2 outside and by connector 31 respectively with react inner cylinder 2 and
The inner wall of the furnace body 1 is connected, and upper and lower ends are free end, and the perimeter 12 for reacting 2 outside of inner cylinder is divided into half
The upper and lower ends phase of burnt feeding zone 121 and char Gasification area 122, semicoke feeding zone 121 and char Gasification area 122 in eyelet thimble 3
It is intercommunicated, when in hydroconversion reaction zone 11 hydrogasification generate high-temperature semi-coke and high methane gas leave reaction inner cylinder 2 after,
On gasification furnace top since reactor diameter increases, gas velocity is reduced, and then generates efficient gas solid separation, and wherein solid is high
Warm semicoke falls under gravity into semicoke feeding zone 121, in methane-rich gas from 13 row of gas vent on 1 top of furnace body
Out.In order to ensure the high-temperature semi-coke generated in hydrogasification area 11 can smoothly enter semicoke feeding zone 121, and semicoke gas
Changing the complete semicoke of unreacted taken out of at the top of area 122 will not enter in reaction inner cylinder 2, and the height of ring sleeve 3 should be lower than
The height of inner cylinder 2 is reacted, the height of preferred ring sleeve 3 is the 1/2-4/5 for reacting 2 height of inner cylinder, to guarantee char Gasification
The synthesis gas of generation and incomplete reaction semicoke can be effectively separated in the difference in height.The diameter of ring sleeve 3 needs root
Determination is integrated according to the time needed for semicoke yield and gasification.Since the gasification reaction rate of semicoke is slower, generally require probably
Or so half an hour, therefore semicoke feeding zone 121 allows for keeping the semicoke yield of half an hour.For example, when semicoke yield is
2m3/ h, then the volume of semicoke feeding zone is about to need 1m3, the size of semicoke feeding zone 121 can be calculated in volume accordingly.Together
When, spacing between 3 lower section free end of eyelet thimble and 1 bottom of furnace body be less than semicoke reaction zone 122 width (i.e. ring sleeve 3 with
The distance between 1 side wall of furnace body.) preferably, spacing between 3 lower section free end of eyelet thimble and 1 bottom of furnace body be eyelet thimble 3 with
The 1/4-3/4 of distance between 1 side wall of furnace body, being effectively guaranteed semicoke successfully can enter semicoke from semicoke feeding zone 121
Gasification zone 122, and the gasifying agent in char Gasification area 122 is prevented to seal in semicoke feeding zone 121.In addition, connector 31 can
Think cylindrical component, or tabular component is arranged in furnace body 1, reaction inner cylinder 2 with this and changes between sleeve 3, with shape
At complete gasification furnace.Further, since semicoke feeding zone 121 and 122 upper end of char Gasification area are semicoke free settling
Area, and char Gasification area 122 can generate a certain amount of synthesis gas, synthesis gas and semicoke in the decanting zone reverse flow.For this purpose, half
The diameter of burnt feeding zone 121 will guarantee that the air-flow that char Gasification section generates is less than the minimum fluidization speed of semicoke in the flow velocity of this section
Degree, to guarantee that semicoke can smoothly settle in the region.In addition, the diameter in char Gasification area 122 will guarantee that semicoke is anti-at this
Answering has enough flow velocitys within area, guarantee that semicoke is in transporting bed gasification state always, semicoke is answered in the flow velocity for transporting section
Control is in 2-10m/s.
In above-described embodiment, in order to further decrease the synthesis gas gas velocity of the generation of char Gasification area 122, and guarantee it half
122 exit of coke gasification area gas velocity with higher, to reduce the influence to Flow of Goods and Materials in char Gasification area 122, gasification furnace
Part entire outer diameter of the furnace body 1 on semicoke reaction zone 122 expands.Meanwhile gasifying agent nozzle 16 is according to char Gasification area 122
Size be configured.To prevent dead zone, guarantee gasifying agent nozzle 16 can drive all semicokes in the region to move upwards,
Gasifying agent nozzle 16 should annularly be laid along 1 bottom of furnace body, and the spacing between adjacent two gasifying agents nozzle 16 is less than or equal to half
The spacing of 1/2 namely adjacent gasification agent nozzle 16 of 122 width of coke gasification area (i.e. distance between 1 side wall of ring sleeve 3 and furnace body)
The 1/2 of distance between 1 side wall of ring sleeve 3 and furnace body, such as when the annular section diameter in char Gasification area 122 is 0.2m, phase
Spacing between adjacent gasifying agent nozzle 14 should be less than or be equal to 0.1m.Further, in order to promote circulating for semicoke, half
The quantity that the bottom of burnt feeding zone 121 blows gas entrance 15 also needs to be arranged according to the size of semicoke feeding zone 121, sets
It is consistent with the setting of above-mentioned gasifying agent nozzle 16 to set principle, namely blow gas entrance 15 should annularly lay along 1 bottom of furnace body, and
Adjacent two blow spacing between gas entrance 15 be less than or equal to ring sleeve 3 with react 1/2 of distance between 2 side wall of inner cylinder.Together
When blow gas preferably carbon dioxide or steam, also can be used as the gasification of high-temperature semi-coke gasification reaction while the semicoke of loosening
Agent.
Obviously it can be concluded that, the gasification furnace in the utility model, by the way that different height is arranged in a reactor
Reaction inner cylinder and ring sleeve, entire reactor is divided into hydrogasification area, semicoke feeding zone and char Gasification area, realize plus
The efficient coupling of hydrogen and the transporting bed gasification of high-temperature semi-coke realizes the hydrogenation of raw material fine coal in a reactor
Change, the direct gasification of the circulation of hot semicoke and hot semicoke, to realize the direct efficient of the high-temperature semi-coke of hydrogasification generation
Conversion.
Obviously, it is practical without departing from this can to carry out various modification and variations to the utility model by those skilled in the art
Novel spirit and scope.If in this way, these modifications and variations of the present invention belong to the utility model claims and
Within the scope of its equivalent technologies, then the utility model is also intended to include these modifications and variations.
Claims (11)
1. a kind of gasification furnace characterized by comprising furnace body (1), reaction inner cylinder (2) and ring sleeve (3)；Wherein,
Reaction inner cylinder (2) setting is in the furnace body (1), for the internal space of the furnace body (1) to be divided into top
The inside hydrogasification area (11) and perimeter (12) of connection；
The ring sleeve (3) is arranged between reaction inner cylinder (2) and the side wall of the furnace body (1), is used for the outside area
The inside semicoke feeding zone (121) and external char Gasification area (122) that domain (12) is divided into upper and lower part to be connected to.
2. gasification furnace according to claim 1, which is characterized in that the bottom end and the furnace body (1) of reaction inner cylinder (2)
Bottom be connected, upper end be free end.
3. gasification furnace according to claim 2, which is characterized in that the height of reaction inner cylinder (2) and the ratio of its diameter
Value is greater than or equal to five.
4. gasification furnace according to claim 1, which is characterized in that the ring sleeve (3) is set in the reaction inner cylinder (2)
Outside and connected with the inner wall for react inner cylinder (2) and the furnace body (1) respectively by connector (31), upper and lower two
End is free end.
5. gasification furnace according to claim 1, which is characterized in that the height of the ring sleeve (3) is lower than in the reaction
The height of cylinder (2).
6. gasification furnace according to claim 5, which is characterized in that the height of the ring sleeve (3) is the reaction inner cylinder
(2) 1/2-4/5 of height.
7. gasification furnace according to claim 1, which is characterized in that ring sleeve (3) bottom end and the furnace body (1) bottom end
Between default spacing be less than the distance between the ring sleeve (3) and the furnace body (1) side wall.
8. gasification furnace according to claim 7, which is characterized in that ring sleeve (3) bottom end and the furnace body (1) bottom end
Between default spacing be its distance between the furnace body (1) side wall 1/4-3/4.
9. gasification furnace according to claim 1, which is characterized in that furnace body (1) bottom is provided with to be added with described respectively
Hydrogen gasification zone (11), the semicoke feeding zone (121) and char Gasification area (122) it is corresponding plus hydrogen nozzle (14), blow
Gas entrance (15) and gasifying agent nozzle (16).
10. gasification furnace according to claim 9, which is characterized in that the gasifying agent nozzle (16) and the gas that blows enter
Mouth (15) is distributed along the furnace body (1) bottom in a ring.
11. gasification furnace according to claim 10, which is characterized in that the spacing of the adjacent gasifying agent nozzle (16) is less than
Or be equal to 1/2 of distance between the ring sleeve (3) and the furnace body (1) side wall, it is adjacent described in blow between gas entrance (15)
Away from 1/2 less than or equal to distance between described reaction inner cylinder (2) and the ring sleeve (3) side wall.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821011570.0U CN208776663U (en) | 2018-06-28 | 2018-06-28 | A kind of gasification furnace |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201821011570.0U CN208776663U (en) | 2018-06-28 | 2018-06-28 | A kind of gasification furnace |
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| CN208776663U true CN208776663U (en) | 2019-04-23 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112725761A (en) * | 2020-12-25 | 2021-04-30 | 湖南金炉科技股份有限公司 | Boiling type vapor deposition furnace |
-
2018
- 2018-06-28 CN CN201821011570.0U patent/CN208776663U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112725761A (en) * | 2020-12-25 | 2021-04-30 | 湖南金炉科技股份有限公司 | Boiling type vapor deposition furnace |
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