CN106433796A - Efficient fluidized bed gasifier with strong agglomeration and low circulating ratio - Google Patents
Efficient fluidized bed gasifier with strong agglomeration and low circulating ratio Download PDFInfo
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- CN106433796A CN106433796A CN201610834348.XA CN201610834348A CN106433796A CN 106433796 A CN106433796 A CN 106433796A CN 201610834348 A CN201610834348 A CN 201610834348A CN 106433796 A CN106433796 A CN 106433796A
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- gasification furnace
- fluidized
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- efficiently
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- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10J—PRODUCTION OF PRODUCER GAS, WATER-GAS, SYNTHESIS GAS FROM SOLID CARBONACEOUS MATERIAL, OR MIXTURES CONTAINING THESE GASES; CARBURETTING AIR OR OTHER GASES
- C10J3/00—Production of combustible gases containing carbon monoxide from solid carbonaceous fuels
- C10J3/46—Gasification of granular or pulverulent flues in suspension
- C10J3/54—Gasification of granular or pulverulent fuels by the Winkler technique, i.e. by fluidisation
- C10J3/56—Apparatus; Plants
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10J—PRODUCTION OF PRODUCER GAS, WATER-GAS, SYNTHESIS GAS FROM SOLID CARBONACEOUS MATERIAL, OR MIXTURES CONTAINING THESE GASES; CARBURETTING AIR OR OTHER GASES
- C10J3/00—Production of combustible gases containing carbon monoxide from solid carbonaceous fuels
- C10J3/72—Other features
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10J—PRODUCTION OF PRODUCER GAS, WATER-GAS, SYNTHESIS GAS FROM SOLID CARBONACEOUS MATERIAL, OR MIXTURES CONTAINING THESE GASES; CARBURETTING AIR OR OTHER GASES
- C10J3/00—Production of combustible gases containing carbon monoxide from solid carbonaceous fuels
- C10J3/72—Other features
- C10J3/82—Gas withdrawal means
- C10J3/84—Gas withdrawal means with means for removing dust or tar from the gas
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10J—PRODUCTION OF PRODUCER GAS, WATER-GAS, SYNTHESIS GAS FROM SOLID CARBONACEOUS MATERIAL, OR MIXTURES CONTAINING THESE GASES; CARBURETTING AIR OR OTHER GASES
- C10J2300/00—Details of gasification processes
- C10J2300/09—Details of the feed, e.g. feeding of spent catalyst, inert gas or halogens
- C10J2300/0913—Carbonaceous raw material
- C10J2300/093—Coal
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Combustion & Propulsion (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Organic Chemistry (AREA)
- Fluidized-Bed Combustion And Resonant Combustion (AREA)
Abstract
The invention discloses an efficient fluidized bed gasifier with strong agglomeration and low circulating ratio. The efficient fluidized bed gasifier with the strong agglomeration and low circulating ratio comprises a gasifier body; a material return hole is formed in the lower part of the gasifier body; the upper part of the gasifier body is connected with the upper part of a first-stage cyclone separator through a communication pipeline; the lower part of the first-stage cyclone separator is connected with a first material return device through a first pipeline; and the first material return device is connected with the material return hole. According to the efficient fluidized bed gasifier with the strong agglomeration and low circulating ratio, high-pressure and high-temperature fly ash directly return to a high-temperature oxidation zone of the gasifier totally, and the original temperature and pressure are maintained, so that the ash aggregation ratio and the carbon conversion rate are greatly increased, and in addition, the energy saving effect is remarkable; a material return pipe which is ejected into a center oxidation zone adopts an ejector ejection mode, is horizontally sent into the high-temperature oxidation zone of the gasifier, is not worn basically and maintains long-period running; and as a gasifying agent jetting inlet is formed outside a lower slag discharge pipe, the high-temperature oxidation zone is more stable, and the wear problem is solved.
Description
Technical field
The disclosure relates generally to fluidized gasification technical field, the stream of more particularly, to a kind of efficiently poly- low circulation multiplying power by force
Change bed gasification furnace.
Background technology
As energy-consuming big country, the energy consumption structure that the few reality of coal heavy wool determines based on coal is deposited for a long time
, but increasingly strict with environmental requirement, the clean utilization technology of coal will keep continuing high growth, wherein makes coal gasification
It is used further to the fields such as chemical industry, generating after synthesis gas, be the major technique of the cleaning coal meeting the requirement of national green energy policy
One of, the research of Coal Gasification Technology is extensively carried out in countries in the world, and the coal gasification method developed so far and equipment are
A lot, and in China there are many applications, the key equipment of wherein Coal Gasification Technology is gasification furnace.
Fixed-bed gasification furnace with lurgi gasifier as representative and the airflow bed gasification furnace with shell, space flight stove etc. as representative obtain
More application, and apply relatively more successful, but there is many inherent shortcomings, limit its range of application.As fixed-bed gasification furnace
Requirement adopts lump coal, and with the popularization of mechanical coal mining technology, lump coal ratio is relatively low, and having a large amount of fine coal cannot utilize, and solid
Fixed bed gasification technology tar content is higher, produces reluctant waste water in a large number；Airflow bed gasification furnace is then to the water content of coal, ash
Fusing point etc. has strict demand, also limit its range of application；The coal characteristic of China determine to have more than 50% coal inapplicable
In fixed-bed gasification furnace and airflow bed gasification furnace, therefore for coal adaptability, wider array of fluidized-bed gasification furnace has expressed more phases
Hope, but the theory of fluid bed is more complicated, operation easier bigger so as to the road of industrial applications walks more difficult, application example
Less.
Poly- powdered coal fluidized bed gasification stove is melted for traditional ash, its subject matter is that flying dust circulating ratio is high, reaches 10 times
More than, the carbon containing flying dust of cyclone separator trapping has it is impossible to enter high-temperature region after gasification furnace sidewall enters in stove through refeed line
Effect regasify and ash melt poly- so that a large amount of flying dust repetitive cycling and cyclone separator between in stove, cause very high circulation
Multiplying power, wastes big energy, and efficiency of carbon con version is low, also increases the initial cost of follow-up equipment and runs burden；
Chinese patent CN201010582393.3 reduces the circulating ratio that ash melts poly- powdered coal fluidized bed gasification converter fly ash, carries
High flying dust reunion rate, but the reunion rate of ash does not reach ideal value, and circulating ratio is still very high, and does not solve to return
The wear problem of pipeline.
The flying dust in the return high-temperature oxydation area providing in Chinese patent CN201010582393.3 is only gas purification
The cold coke powder being trapped by cleaner unit in journey, sends into high-temperature oxydation area, not energy-conservation after supercharging by air conveying, and revolves
Most flying dusts of wind separator trapping are not returned to high-temperature oxydation area, and circulating ratio is still higher.
Content of the invention
In order to solve above-mentioned problem of the prior art, the present invention provides and a kind of improves the efficient of grey reunion rate and efficiency of carbon con version
The fluidized-bed gasification furnace of poly- low circulation multiplying power by force.
To achieve these goals, the present invention adopts the technical scheme that：
A kind of fluidized-bed gasification furnace of efficiently poly- low circulation multiplying power by force, including gasification furnace, the bottom of described gasification furnace is provided with
Returning charge mouth, the top of described gasification furnace connects the top of primary cyclone by unicom pipeline, and described one cyclonic separates
The bottom of device is passed through the first pipeline and is connected the first material returning device；Described first material returning device connects described returning charge mouth.
Compared with prior art, the invention has the beneficial effects as follows：
The flying dust of high pressure, high temperature is directly all directly returned to the high-temperature oxydation area of gasification furnace by the present invention, maintains original
Temperature and pressure, greatly improves grey reunion rate and efficiency of carbon con version, and energy-saving effect is notable；Inject the refeed line of center zoneofoxidation
The mode of setting is drawn using injector, level sends into gasification furnace high-temperature oxydation area, does not substantially wear and tear, maintain long-term operation；Gasification
Agent jet inlet is arranged on outside lower dreg discharging pipe, makes high-temperature oxydation area more stable, and solves wear problem.
Brief description
By reading the detailed description that non-limiting example is made made with reference to the following drawings, other of the application
Feature, objects and advantages will become more apparent upon：
Fig. 1 is the structural representation of the efficiently fluidized-bed gasification furnace of poly- low circulation multiplying power by force provided in an embodiment of the present invention.
In figure：1- gasification furnace, 2- primary cyclone, 3- secondary cyclone, 4- first material returning device, 5- second returns
Glassware, 6- injector, 7- gasifying agent distribution grid, 8- fine coal import, 9- gasification agent inlet, 10- gasifying agent jet inlet, under 11-
Slag-drip opening, 12- returning charge mouth, 13- communication passage, 14- conversion zone, 15- first pipeline, 16- gasifying agent chamber, 17- second pipe
Road, 18- blows gas, 19- crude synthesis gas, 20- gasifying agent, 21- coal dust, 22- bottom ash.
Specific embodiment
With reference to the accompanying drawings and examples the application is described in further detail.It is understood that this place is retouched
The specific embodiment stated is used only for explaining related invention, rather than the restriction to this invention.It also should be noted that, in order to
It is easy to describe, illustrate only in accompanying drawing and invent related part.
It should be noted that in the case of not conflicting, the embodiment in the application and the feature in embodiment can phases
Mutually combine.To describe the application below with reference to the accompanying drawings and in conjunction with the embodiments in detail.
Refer to Fig. 1, a kind of fluidized-bed gasification furnace of efficiently poly- low circulation multiplying power by force, including gasification furnace 1, gasification furnace 1
Bottom is provided with returning charge mouth 12, and the top of gasification furnace 1 connects the top of primary cyclone 2 by unicom pipeline 13, and one-level is revolved
The bottom of wind separator 2 connects the first material returning device 4 by the first pipeline 15；First material returning device 4 connects returning charge mouth 12.
Preferably, the top of primary cyclone 2 connects the top of secondary cyclone 3, secondary cyclone 2
Top be provided with two grades of synthesis gas escape pipes, two grades of synthesis gas escape pipes discharge crude synthesis gas 19；
The bottom of secondary cyclone 3 connects the second material returning device 5 by unicom pipeline 13, and the second material returning device 5 passes through the
Two pipeline 17 connects the first pipeline 15.
The present invention adopts the efficient high-pressure cyclone separator of two-stage series connection；By primary cyclone and two grades of cyclonic separation
The high pressure of device trapping, the flying dust of high temperature all directly return to the high-temperature oxydation area of gasification furnace, maintain original temperature and pressure, carry
High ash reunion rate and efficiency of carbon con version, energy-saving effect is notable.
Preferably, the first material returning device 4 connects injector 6 by unicom pipeline 13, and the connection of injector 6 one end blows trachea
18, the other end connects returning charge mouth 12 by unicom pipeline 13.
The present invention injects the refeed line of center zoneofoxidation by the way of injector draws and sets, and level sends into gasification furnace high temperature oxygen
Change the conversion zone in area, substantially do not wear and tear, maintain long-term operation.
The present embodiment, on the basis of above-described embodiment, is provided with gasifying agent distribution grid 7 in gasification furnace 1, gasifying agent is distributed
Gasification furnace 1 is divided into the conversion zone 14 on top and the gasifying agent chamber 16 of bottom by plate 7, conversion zone 14 side wall be provided with to
A few fine coal import 8, if generally setting dried coal powder import 8, fine coal import 8 is used for inputting fine coal 21, and conversion zone 14 connects
Described returning charge mouth 12, the side wall of gasifying agent chamber 17 is provided with gasification agent inlet 9, and gasification agent inlet 9 is used for partial gasification agent
20 importing gasifying agent chambers 16, and the conversion zone 14 on gasification furnace 1 top is entered by gasifying agent distribution grid 7, gasifying agent is distributed
Plate 7 upper band perforation, can enter gasifying agent chamber for gasifying agent.
On the basis of above-described embodiment, gasifying agent distribution grid 7 is in that inverted cone is arranged to the present embodiment, gasifying agent distribution grid 7
Positive bottom connect lower dreg discharging mouth 11, side lower part is connected to gasifying agent jet inlet 10 and returning charge mouth 12, lower dreg discharging mouth 11
For discharging the bottom ash 22 in gasification furnace 1.
The gasifying agent jet inlet of the present invention is arranged on outside lower dreg discharging pipe, is divided into some branched pipes through inverted cone distribution grid side
Bottom is injected in gasification furnace, makes high-temperature oxydation area more stable, and solves wear problem.
On the basis of above-described embodiment, the gasifying agent of gasifying agent jet inlet 10 projects direction and returning charge mouth to the present embodiment
12 pan feeding direction is in 120 ° -150 °, can be 120 °, 125 ° 130 °, 135 °, 140 °, 145 ° or 150 °.
Gasifying agent jet inlet of the present invention and returning charge mouth liquidate at an angle and inject the conversion zone of gasification furnace, shape with joint efforts
Become high-speed jet upwards, beneficial to forming stable axle center high-temperature oxydation area, form stable fluidization.
On the basis of above-described embodiment, the first material returning device 4 and/or the second material returning device 5 are automatic material returning device to the present embodiment,
Described automatic material returning device can automatically adjust returning charge amount, for stoping gasification furnace inner high voltage coal gas from being played a reversed role from the bottom up.
, on the basis of above-described embodiment, the barrel diameter of gasification furnace 1 is unanimous between the higher and lower levels for the present embodiment.
The present invention cancels the expanding reach of traditional gasification furnace, makes via cyclone separator trapping and returns flying of high-temperature oxydation area
Ash particle degree is significantly improved than traditional data, is conducive to the reunion of flying dust and the second gasification of coal, the discharge of flying dust
Flow direction changes, and so that most flying dusts is discharged from gasification furnace bottom after participating in reuniting, the ash quantity that coal gas is taken away drops to
Minimum, efficiency of carbon con version improves.
The work process of the present invention：
The crude synthesis gas that conversion zone generates are carried particle dust secretly and are divided via unicom pipeline 13 entrance one cyclonic upwards
From device 2, larger particles are captured and enter the first pipeline 15, and the fine grained of collection at large enters two grades of whirlwind via unicom pipeline 13
Separator 3, is separated again, and larger granule is captured and enters unicom pipeline 13, and the carbonaceous particles of unicom pipeline 13 are through thin
Powder the second material returning device 5 enters second pipe 17, and mixes with the returning charge of the first pipeline 15, jointly through coarse powder the first material returning device 4
Enter unicom pipeline 13, and unicom pipeline 13 is flowed through by blowing gas 18 injection level by injector 6, inject gas through returning charge mouth 12
Change the conversion zone 14 in the high-temperature oxydation area of stove 1.
Above description is only the preferred embodiment of the application and the explanation to institute's application technology principle.People in the art
Member is it should be appreciated that involved invention scope is however it is not limited to the technology of the particular combination of above-mentioned technical characteristic in the application
Scheme, also should cover simultaneously in the case of without departing from described inventive concept, be carried out by above-mentioned technical characteristic or its equivalent feature
Combination in any and other technical schemes of being formed.Such as features described above has similar work(with (but not limited to) disclosed herein
The technical scheme that the technical characteristic of energy is replaced mutually and formed.
Claims (8)
1. a kind of efficiently by force poly- low circulation multiplying power fluidized-bed gasification furnace it is characterised in that include gasification furnace, described gasification furnace
Bottom is provided with returning charge mouth, and the top of described gasification furnace connects the top of primary cyclone by unicom pipeline；Described one-level
The bottom of cyclone separator is passed through the first pipeline and is connected the first material returning device；Described first material returning device connects described returning charge mouth.
2. according to claim 1 efficiently by force the fluidized-bed gasification furnace of poly- low circulation multiplying power it is characterised in that described one-level
The top of cyclone separator connects the top of secondary cyclone, and the top of described secondary cyclone is provided with two grades of synthesis
Gas escape pipe；
The bottom of described secondary cyclone connects the second material returning device by unicom pipeline, and described second material returning device passes through second
Pipeline connects the first pipeline.
3. according to claim 2 efficiently by force the fluidized-bed gasification furnace of poly- low circulation multiplying power it is characterised in that described first
Material returning device connects injector by unicom pipeline, and the connection of described injector one end blows trachea, and the other end is by unicom pipeline even
Connect described returning charge mouth.
4. according to claim 3 efficiently by force the fluidized-bed gasification furnace of poly- low circulation multiplying power it is characterised in that described gasification
It is provided with gasifying agent distribution grid, gasification furnace is divided into the conversion zone on top and the gas of bottom by described gasifying agent distribution grid in stove
Agent chamber, described conversion zone side wall is provided with least one fine coal import, and described conversion zone connects described returning charge mouth, institute
The side wall stating gasifying agent chamber is provided with gasification agent inlet, and described gasification agent inlet is used for for partial gasification agent importing gasifying agent chamber
Room, and the conversion zone on gasification furnace top is entered by gasifying agent distribution grid.
5. according to claim 4 efficiently by force the fluidized-bed gasification furnace of poly- low circulation multiplying power it is characterised in that described gasification
Agent distribution grid is in that inverted cone is arranged, the positive bottom of described gasifying agent distribution connects lower dreg discharging mouth, and side lower part is connected to gasification
Agent jet inlet and returning charge mouth.
6. according to claim 5 efficiently by force the fluidized-bed gasification furnace of poly- low circulation multiplying power it is characterised in that described gasification
The gasifying agent of agent jet inlet projects direction and is in 120 ° -150 ° with the pan feeding direction of described returning charge mouth.
7. according to any one of claim 1-6 efficiently by force poly- low circulation multiplying power fluidized-bed gasification furnace it is characterised in that
Described first material returning device and/or the second material returning device are automatic material returning device, and described automatic material returning device can automatically adjust returning charge amount, uses
Play a reversed role from the bottom up in stoping gasification furnace inner high voltage coal gas.
8. according to claim 7 efficiently by force the fluidized-bed gasification furnace of poly- low circulation multiplying power it is characterised in that described gasification
The barrel diameter of stove is unanimous between the higher and lower levels.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2016107031033 | 2016-08-22 | ||
| CN201610703103 | 2016-08-22 |
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| Publication Number | Publication Date |
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| CN106433796A true CN106433796A (en) | 2017-02-22 |
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| CN201610834348.XA Pending CN106433796A (en) | 2016-08-22 | 2016-09-20 | Efficient fluidized bed gasifier with strong agglomeration and low circulating ratio |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107937040A (en) * | 2017-11-24 | 2018-04-20 | 长沙德科投资管理咨询有限公司 | A kind of gas burner with cinder recycling circulating combustion |
| CN109022044A (en) * | 2018-10-19 | 2018-12-18 | 四川蓝星机械有限公司 | A kind of coal gasification reaction device |
| CN110041967A (en) * | 2018-04-25 | 2019-07-23 | 新能能源有限公司 | The second level whirlwind feed back and afterheat utilizing system of high temperature and high pressure flue gas |
| CN112552962A (en) * | 2020-12-04 | 2021-03-26 | 陕西延长石油（集团）有限责任公司 | Multi-stage circulating gasification device and method for carbon-containing solid particles |
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| CN104498103A (en) * | 2014-12-30 | 2015-04-08 | 上海锅炉厂有限公司 | Compound circulating fluidized bed gasification reaction device |
| CN206438086U (en) * | 2016-08-22 | 2017-08-25 | 江苏天沃综能清洁能源技术有限公司 | The fluidized-bed gasification furnace of efficiently strong poly- low circulation multiplying power |
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2016
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Patent Citations (3)
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| CN204079921U (en) * | 2014-09-01 | 2015-01-07 | 中国科学院山西煤炭化学研究所 | A kind of gas distributor of jet fluidized-bed vapourizing furnace |
| CN104498103A (en) * | 2014-12-30 | 2015-04-08 | 上海锅炉厂有限公司 | Compound circulating fluidized bed gasification reaction device |
| CN206438086U (en) * | 2016-08-22 | 2017-08-25 | 江苏天沃综能清洁能源技术有限公司 | The fluidized-bed gasification furnace of efficiently strong poly- low circulation multiplying power |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107937040A (en) * | 2017-11-24 | 2018-04-20 | 长沙德科投资管理咨询有限公司 | A kind of gas burner with cinder recycling circulating combustion |
| CN110041967A (en) * | 2018-04-25 | 2019-07-23 | 新能能源有限公司 | The second level whirlwind feed back and afterheat utilizing system of high temperature and high pressure flue gas |
| CN110041967B (en) * | 2018-04-25 | 2023-12-22 | 新能能源有限公司 | Secondary cyclone return material and waste heat utilization system for high-temperature and high-pressure flue gas |
| CN109022044A (en) * | 2018-10-19 | 2018-12-18 | 四川蓝星机械有限公司 | A kind of coal gasification reaction device |
| CN109022044B (en) * | 2018-10-19 | 2023-10-20 | 四川蓝星机械有限公司 | Coal gasification reaction device |
| CN112552962A (en) * | 2020-12-04 | 2021-03-26 | 陕西延长石油（集团）有限责任公司 | Multi-stage circulating gasification device and method for carbon-containing solid particles |
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