CN207072928U - One kind pyrolysis and gasification decoupling gasification furnace - Google Patents
One kind pyrolysis and gasification decoupling gasification furnace Download PDFInfo
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- CN207072928U CN207072928U CN201720808220.6U CN201720808220U CN207072928U CN 207072928 U CN207072928 U CN 207072928U CN 201720808220 U CN201720808220 U CN 201720808220U CN 207072928 U CN207072928 U CN 207072928U
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- gasification furnace
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Abstract
The utility model discloses one kind pyrolysis and gasification decoupling gasification furnace, the top of upper cover is provided with pyrolysis gas outlet, uniform ring is provided with least two pyrolysis oxygen and fine coal nozzle on upper direct tube section, the direct tube section being pyrolyzed above oxygen and fine coal nozzle highly is 3~10D, and the angle of the axis of pyrolysis oxygen and fine coal nozzle in the horizontal plane between gasification furnace radial direction is 6 °~10 °；Uniform ring is provided with least two gasified oxygen nozzle on lower direct tube section, the bottom of low head is provided with synthesis gas and slag exit, the direct tube section that gasified oxygen nozzle distance is pyrolyzed oxygen and fine coal nozzle is highly 1~3D, direct tube section below gasified oxygen nozzle is highly 2~3D, angle of the axis of gasified oxygen nozzle in the horizontal plane between gasification furnace radial direction is 0 ° or 4.5 °, and pyrolysis gas outlet is 1/2.5~1/4 with the diameter ratio of synthesis gas and slag exit.The gasification furnace can prepare high concentration methane thermal simultaneously and vent one's spleen and low-concentration methane synthesis gas.
Description
Technical field
It the utility model is related to a kind of pyrolysis and gasification decoupling gasification furnace.
Background technology
Coal Gasification Technology is that the solid-state primary energy such as coal is converted into the main path of gaseous state cleaning secondary energy sources, the skill
Art mainly applies to synthesize ammonia, synthesizing methanol, refinery hydrogen preparing, blast furnace reduction iron production chemical industry metallurgical industry, combined cycle generation dress
Put and industry and domestic gas field in.
Gasification furnace is the critical equipment of Coal Gasification Technology, and its interior reactive flow feature directly influences whole gasification process
Configuration and performance.Existing coal gasifier can be divided into fixed-bed gasification furnace, fluidized-bed gasification furnace by gasified raw material size and temperature
And airflow bed gasification furnace.Fixed-bed gasification furnace is because coal size is big, gasification reaction temperature is low, gasification generation synthesis gas and coal pyrolysis gas
Gasification furnace is together flowed out, product is rich in certain density methane and tar, and its follow-up clean unit and wastewater treatment are complex.
Fluid bed is the charging of mesoscale coal particle, and gasification temperature is medium, contains a certain amount of methane in synthesis gas, but it is to raw material chi
Very little and coking capacity has higher requirement.Airflow bed gasification furnace is fed using fine coal, and gasification temperature is high, exit gas without methane and
Tar, gasification load is big, is easy to maximize.
Coal is a kind of complicated organic matter rich in c h bond structure, contains macromolecular key in the product of Conventional cryogenic gasification
C-H compounds (such as tar)；High-temperature gasification then all breaks c h bond so that micro-molecular gas component is comprised only in product.And
For the coal chemical industry using natural gas from coal as major product, product is the methane gasification containing c h bond, therefore is developed a kind of rich
Become more and more urgent containing methane, without the big Coal Gasification Technology of tar, processing load.
Utility model content
The technical problems to be solved in the utility model is that shortage is a kind of present in prior art while prepares in order to overcome
The defects of clean and effective airflow bed gasification furnace of pyrolysis gas rich in methane and the synthesis gas containing low-concentration methane, and provide one
Kind pyrolysis and gasification decoupling gasification furnace.Gasification furnace provided by the utility model is especially suitable for using carbonaceous material as raw material, simultaneously
Prepare the technique that high concentration methane thermal is vented one's spleen with low-concentration methane synthesis gas.
The utility model is that solve above-mentioned technical problem by following technical proposals：
The utility model provides a kind of pyrolysis and gasification decoupling gasification furnace, and the gasification furnace includes a metal shell, its
It is divided into a upper shell and a lower house, the upper shell includes direct tube section on a upper cover and one, and the lower house is included
Direct tube section and a low head, the upper direct tube section and the isometrical setting of lower direct tube section, its feature be, the top of the upper cover
Portion is provided with a pyrolysis gas outlet, and uniform ring is provided with least two pyrolysis oxygen and fine coal on the sustained height of direct tube section on described
Nozzle, the pyrolysis oxygen and the direct tube section above fine coal nozzle are highly 3~10D, the pyrolysis oxygen and fine coal nozzle
The angle α between gasification furnace radial direction is 6 °~10 ° to axis in the horizontal plane；On the sustained height of the lower direct tube section uniformly
At least two gasified oxygen nozzle is equipped with, the bottom of the low head is additionally provided with a synthesis gas and slag exit, the gasification oxygen
Gas jets are highly 1~3D apart from the direct tube section of pyrolysis oxygen and the fine coal nozzle, straight below the gasified oxygen nozzle
Cylinder section highly is 2~3D, the axis of the gasified oxygen nozzle in the horizontal plane the angle β between gasification furnace radial direction for 0 ° or
4.5 °, the pyrolysis gas outlet is 1/2.5~1/4 with the diameter ratio of the synthesis gas and slag exit.
It is preferred that the number of the pyrolysis oxygen and fine coal nozzle is 2~4, it is more preferably 4.Particular number can be with
Load is handled according to gasification furnace to be determined.
It is preferred that the pyrolysis oxygen and the direct tube section above fine coal nozzle are highly 5D.
It is preferred that the axis angle α between gasification furnace radial direction in the horizontal plane of the pyrolysis oxygen and fine coal nozzle
For 8 °.The setting of the angle is to reduce coal tar fly ash granule content at the pyrolysis gas outlet at top.
It is preferred that angle of the axis of the pyrolysis oxygen and fine coal nozzle on vertical plane between gasification furnace radial direction is
3~9 °, be more preferably 6 °.
It is preferred that the number of the gasified oxygen nozzle is 2~6, it is more preferably 4.
It is preferred that the direct tube section that oxygen and fine coal nozzle are pyrolyzed described in the gasified oxygen nozzle distance is highly 2D.
It is preferred that the direct tube section below the gasified oxygen nozzle is highly 2.5D.
In the utility model, for the axis angle β between gasification furnace radial direction in the horizontal plane of gasified oxygen nozzle
Selection, for high-ash-fusion coal, angle β is preferably 0 °；For low-ash-fusion coal, angle β is preferably 4.5 °.According to normal
Rule understanding, flowing temperature FT >=1400 ° of high-ash-fusion coal, 1400 ° of the flowing temperature FT ＜ of low-ash-fusion coal.
It is preferred that angle of the axis of the gasified oxygen nozzle on vertical plane between gasification furnace radial direction is 3~9 °.
It is preferred that the pyrolysis gas outlet is 1/3 with the diameter ratio of the synthesis gas and slag exit.According to this area
Conventional, the diameter of the synthesis gas and slag exit is configured by exit gas speed, general control outlet gas velocity 10~
20m/s is configured, preferably 15m/s.
It is preferred that the synthesis gas and slag exit are lower cone contraction mouth, its lower cone angle of throat is 20~70 °.
Conventional according to this area in the utility model, the pyrolysis oxygen is located in a first jet room with fine coal nozzle,
It is double-channel spray nozzle structure, and wherein internal channel is used to be passed through carbonaceous material, and outer tunnel is used to be passed through pyrolysis oxygen；The gasification
For oxygen jet in a second nozzle room, it is double-channel spray nozzle structure, and wherein internal channel is used to be passed through oxygen, and outer tunnel is used
In being passed through gasification steam.
It is preferred that angle of the axis of the first jet room in the horizontal plane between gasification furnace radial direction is 0 °；It is described
Angle of the axis of first jet room on vertical plane between gasification furnace radial direction is 3~9 °, is more preferably 6 °.Second spray
Angle of the axis of mouth room in the horizontal plane between gasification furnace radial direction is 0 °；The axis of the second nozzle room is on vertical plane
Angle between gasification furnace radial direction is 3~9 °, is more preferably 6 °.
Conventional according to this area in the utility model, at least two pyrolysis oxygen is provided in gasification furnace with fine coal nozzle
On the body of heater of sustained height, the set-up mode of at least two gasified oxygen nozzle is also such.The boundary of upper shell and lower house
Line is split with the center line of upper and lower two layers of nozzle (being pyrolyzed oxygen and fine coal nozzle, gasified oxygen nozzle).
In the utility model, D refers to the internal diameter of the upper direct tube section and lower direct tube section in gasification furnace；In addition, such as without special theory
Bright, the diameter referred to refers both to internal diameter.
The operation principle of gasification furnace of the present utility model：" headroom and the bottom sky having different from existing gasification furnace
Between effect it is essentially identical, the chemical reaction based on gasification integrally occurs for gasification furnace, caused by lower space and upper space
Rich in CO and H2And very small amount CH4Synthesis gas either from top of gasification furnace export otherwise from outlet at bottom flow out gasify
Stove, slag are discharged from outlet at bottom " structure, it is main in the upper shell of gasification furnace of the present utility model to occur pyrolytic reaction, it is raw
Into rich in CH4Pyrolysis gas from the top of upper cover pyrolysis gas outlet flow out gasification furnace, coke after lower house is mainly pyrolyzed
With CO2And H2O gasification reaction, generation are rich in CO and H2And very small amount CH4Synthesis gas and slag from the synthesis of low head bottom
Gas and slag exit outflow gasification furnace.It can be seen that the material trend in whole gasification furnace has larger difference.
In gasification furnace of the present utility model, the upper shell is pyrolysis section, and the lower house is gasification section, the pyrolysis section
It is located at the gasification section in same metal shell.Gasification furnace of the present utility model is applied to processing slurry carbonaceous material or powdery
The high volatile coals such as carbonaceous material, especially lignite.
When carrying out gasification reaction using gasification furnace of the present utility model, the pyrolysis oxygen and fine coal that are set by upper direct tube section
Nozzle is passed through pyrolysis oxygen and coal dust.After pyrolysis oxygen enters system, pyrolysis gas and synthesis gas reaction with jet entrainment, consumption
H therein2, and heat is provided for pyrolysis, pyrolytic reaction mainly occurs in pyrolysis section for coal dust；The gas set by lower direct tube section
Change oxygen jet, be passed through gasified oxygen, for converting Coal Char Particles caused by upper shell pyrolysis, in gasification section, coal tar is in gas
Change and gasification reaction occurs in section.Wherein, the amount for being pyrolyzed oxygen accounts for the 5%~20% of total oxygen demand, preferably 12%；Gasified oxygen
Amount account for the 80~95% of total oxygen demand, preferably 88%, the percentage is percent by volume.
Positive effect of the present utility model is：The utility model can realize that the pyrolysis of coal and gasification decouple, i.e.,
Pyrolysis gas without tar, rich in methane flows out gasification furnace after pyrolysis section from pyrolysis gas outlet；The very low conjunction of methane content
Into gas and molten slag gasification furnace is discharged from bottom synthesis gas and slag exit；Pyrolysis and gasification separation by this coal, are carried
The utilization rate of C-H chemical bonds in high coal, to provide equipment support to produce the technique of natural gas or combustion gas as product.
Brief description of the drawings
Fig. 1 is the structural representation of gasification furnace in embodiment 1.
Fig. 2 is the diagrammatic cross-section that oxygen and fine coal nozzle are pyrolyzed in embodiment 1.
Fig. 3 is the diagrammatic cross-section of gasified oxygen nozzle in embodiment 1.
Description of reference numerals is as follows：
Gasification furnace 1
It is pyrolyzed oxygen and fine coal nozzle 2
First jet room 3
Gasified oxygen nozzle 4
Second nozzle room 5
Pyrolysis gas outlet 6
Synthesis gas and slag exit 7
Embodiment
Name preferred embodiment, and become apparent from intactly illustrating the utility model with reference to accompanying drawing.
Embodiment 1
In the present embodiment, the structure of gasification furnace as shown in Figures 1 to 3, wherein, gasification furnace 1 includes a metal shell, and it is divided into
One upper shell and a lower house, upper shell include direct tube section on a upper cover and one, and lower house is including direct tube section once and once
End socket, upper direct tube section and the isometrical setting of lower direct tube section, a pyrolysis gas outlet 6 are additionally provided with the top of upper cover, in upper straight tube
Also uniform ring is provided with 4 pyrolysis oxygen and fine coal nozzle 2 on the sustained height of section, and pyrolysis oxygen is located at first with fine coal nozzle 2
In nozzle box 3, also uniform ring is additionally provided with 4 gasified oxygen nozzles 4, gasified oxygen nozzle 4 on the sustained height of lower direct tube section
In second nozzle room 5, the bottom of the low head is additionally provided with a synthesis gas and slag exit 7.
Handle pyrolysis and the gasification decoupling gasification furnace of 1100 tons of coals one day, using shenfu coal as raw material, using dry-coal feeding,
Vapor pressure is 4.0MPa；It is 23800Nm into system total oxygen demand3/ h, top pyrolysis oxygen flow is the 10% of total oxygen demand, under
Portion's pyrolysis oxygen flow is the 90% of total oxygen demand.Vaporizer diameter D is 2400mm, and table 1 provides the present embodiment gasification furnace data.Coal
For prime number according to as shown in Table 2-4, gasification test the results are shown in Table 5.
The gasification furnace data of the embodiment 1 of table 1
The Industrial Analysis table of table 2
| Parameter | Numerical value |
| Air-dried moisture Mar | 1.4% (wt) |
| Dry base fixed carbon Md | 63.08% (wt) |
| Dry base volatile matter Vd | 24.31(wt) |
| Dry base ash content Ad | 12.61% (wt) |
The elementary analysis table of table 3
The calorific value of table 4, ash fusion point and slag physical property
The gasification furnace performance of 5 embodiment of table 1
Embodiment 2
Handle the powder coal gasification furnace of 3000 tons of coals one day, vapor pressure 4.0MPa, wall is water wall structure, gasification furnace
Structure it is same as Example 1, different parameters is as shown in table 6, wherein pyrolysis oxygen and fine coal nozzle are 4, gasified oxygen
Nozzle is 4.Gasifying agent is purity oxygen, wherein, top pyrolysis oxygen flow is the 7% of total oxygen demand, bottom gasified oxygen flow
For the 93% of total oxygen demand, coal used is high-ash-fusion coal (additional lime stone flux), and coal data is as shown in table 7, liquid row
Slag temperature is 1400 DEG C.Gasification test the results are shown in Table 8.
The gasification furnace data of the embodiment 2 of table 6
The coal data of table 7
Comparative example 1
According to application number CN201110074557.6 patent application (publication number：CN102433162A) the disclosure of embodiment 1
Gasification furnace structure Processing Example 2 high-ash-fusion coal, what is obtained the results are shown in Table 8.
The gasification test result of the embodiment 2 of table 8 and comparative example 1
As can be seen from the above analysis, the gasification furnace of the application is not only suitable for high-ash-fusion coal, is also applied for low ash smelting point
Coal, in addition, the result of table 8 is also shown that in gasification furnace processing identical coal disclosed in from prior art, in other gasification bars
Under the premise of part all identicals, cold gas efficiency is worse than the utility model.
Claims (10)
1. one kind pyrolysis and gasification decoupling gasification furnace, the gasification furnace includes a metal shell, and it is divided into a upper shell and once
Housing, the upper shell include direct tube section on a upper cover and one, and the lower house includes direct tube section and a low head, institute
State direct tube section and the isometrical setting of lower direct tube section, it is characterised in that the top of the upper cover is provided with a pyrolysis gas outlet,
Uniform ring is provided with least two pyrolysis oxygen and fine coal nozzle on the sustained height of direct tube section on described, the pyrolysis oxygen with
Direct tube section above fine coal nozzle is highly 3~10D, the axis of pyrolysis oxygen and the fine coal nozzle in the horizontal plane with gasification
Angle α between stove radial direction is 6 °~10 °；Uniform ring is provided with least two gasification oxygen on the sustained height of the lower direct tube section
Gas jets, the bottom of the low head are additionally provided with a synthesis gas and slag exit, pyrolysis described in the gasified oxygen nozzle distance
The direct tube section of oxygen and fine coal nozzle is highly 1~3D, and the direct tube section below the gasified oxygen nozzle is highly 2~3D, institute
Stating the axis of gasified oxygen nozzle, the angle β between gasification furnace radial direction is 0 ° or 4.5 ° in the horizontal plane, and the pyrolysis gas goes out
Mouth is 1/2.5~1/4 with the diameter ratio of the synthesis gas and slag exit.
2. gasification furnace as claimed in claim 1, it is characterised in that the number of the pyrolysis oxygen and fine coal nozzle is 2~4
It is individual.
3. gasification furnace as claimed in claim 1, it is characterised in that the pyrolysis oxygen and the direct tube section above fine coal nozzle are high
Spend for 5D.
4. gasification furnace as claimed in claim 1, it is characterised in that the axis of the pyrolysis oxygen and fine coal nozzle is in horizontal plane
The upper angle α between gasification furnace radial direction is 8 °；The axis of pyrolysis oxygen and the fine coal nozzle on vertical plane with gasification furnace
Angle between radial direction is 3~9 °.
5. gasification furnace as claimed in claim 1, it is characterised in that the number of the gasified oxygen nozzle is 2~6.
6. gasification furnace as claimed in claim 5, it is characterised in that the number of the gasified oxygen nozzle is 4；The gasification
Oxygen jet is highly 2D apart from the direct tube section of the pyrolysis oxygen and fine coal nozzle.
7. gasification furnace as claimed in claim 1, it is characterised in that the direct tube section below the gasified oxygen nozzle is highly
2.5D；Angle of the axis of the gasified oxygen nozzle on vertical plane between gasification furnace radial direction is 3~9 °.
8. gasification furnace as claimed in claim 1, it is characterised in that the pyrolysis gas outlet and the synthesis gas and slag exit
Diameter ratio be 1/3；The synthesis gas and slag exit are lower cone contraction mouth, and its lower cone angle of throat is 20~70 °.
9. gasification furnace as claimed in claim 1, it is characterised in that the pyrolysis oxygen is located at a first jet with fine coal nozzle
Interior, the first jet room are double-channel spray nozzle structure, and wherein internal channel is used to be passed through carbonaceous material, and outer tunnel is used to be passed through
It is pyrolyzed oxygen；For the gasified oxygen nozzle in a second nozzle room, the second nozzle room is double-channel spray nozzle structure, its
Middle internal channel is used to be passed through oxygen, and outer tunnel is used to be passed through gasification steam.
10. gasification furnace as claimed in claim 9, it is characterised in that the axis of the first jet room in the horizontal plane with gas
The angle changed between stove radial direction is 0 °；Angle of the axis of the first jet room on vertical plane between gasification furnace radial direction be
3~9 °；Angle of the axis of the second nozzle room in the horizontal plane between gasification furnace radial direction is 0 °；The second nozzle room
Angle of the axis on vertical plane between gasification furnace radial direction be 3~9 °.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720808220.6U CN207072928U (en) | 2017-07-05 | 2017-07-05 | One kind pyrolysis and gasification decoupling gasification furnace |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720808220.6U CN207072928U (en) | 2017-07-05 | 2017-07-05 | One kind pyrolysis and gasification decoupling gasification furnace |
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| CN207072928U true CN207072928U (en) | 2018-03-06 |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107099339A (en) * | 2017-07-05 | 2017-08-29 | 华东理工大学 | One kind pyrolysis and gasification decoupling gasification furnace |
| CN108517227A (en) * | 2018-06-27 | 2018-09-11 | 华东理工大学 | The preparation system of industrial combustion gas and the preparation method of industrial combustion gas |
| CN108546569A (en) * | 2018-06-27 | 2018-09-18 | 华东理工大学 | Airflow bed gasification furnace and gasification process |
-
2017
- 2017-07-05 CN CN201720808220.6U patent/CN207072928U/en not_active Withdrawn - After Issue
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107099339A (en) * | 2017-07-05 | 2017-08-29 | 华东理工大学 | One kind pyrolysis and gasification decoupling gasification furnace |
| CN107099339B (en) * | 2017-07-05 | 2023-05-12 | 华东理工大学 | Pyrolysis and gasification decoupling gasification furnace |
| CN108517227A (en) * | 2018-06-27 | 2018-09-11 | 华东理工大学 | The preparation system of industrial combustion gas and the preparation method of industrial combustion gas |
| CN108546569A (en) * | 2018-06-27 | 2018-09-18 | 华东理工大学 | Airflow bed gasification furnace and gasification process |
| CN108546569B (en) * | 2018-06-27 | 2023-09-15 | 华东理工大学 | Entrained flow gasifier and gasification method |
| CN108517227B (en) * | 2018-06-27 | 2023-09-15 | 华东理工大学 | Industrial gas preparation system and industrial gas preparation method |
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