CN108264937A - A kind of double-fluidized-bed reaction system - Google Patents
A kind of double-fluidized-bed reaction system Download PDFInfo
- Publication number
- CN108264937A CN108264937A CN201711391427.9A CN201711391427A CN108264937A CN 108264937 A CN108264937 A CN 108264937A CN 201711391427 A CN201711391427 A CN 201711391427A CN 108264937 A CN108264937 A CN 108264937A
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- CN
- China
- Prior art keywords
- gasification furnace
- bed
- furnace
- pipeline
- fluidized
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Classifications
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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
- C10J2300/00—Details of gasification processes
- C10J2300/09—Details of the feed, e.g. feeding of spent catalyst, inert gas or halogens
- C10J2300/0953—Gasifying agents
- C10J2300/0973—Water
- C10J2300/0976—Water as steam
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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)
- Gasification And Melting Of Waste (AREA)
- Devices And Processes Conducted In The Presence Of Fluids And Solid Particles (AREA)
Abstract
The present invention discloses a kind of double-fluidized-bed reaction system, includes the first pipeline and the second pipeline of gasification furnace, combustion furnace and the connection gasification furnace；First pipeline includes the first branch road and the second branch road, and one of first branch road and the second branch road are arranged to the evaporation tube road equipped with steam generator.Double-fluidized-bed reaction system provided by the invention, the reaction system can realize that double-fluidized-bed gasification furnace vapor automatically supplies, and can change the output of evaporator into the bed material amount of evaporation tube road by changing, so as to flexibly control steam production.The invention can reduce or even avoid, using external steam generating system, so as to make gasification furnace integrally compacter, can improve the economy of gasifier operation, reduce the operating cost of gasification furnace.
Description
Technical field
The present invention relates to reactor fields.More particularly, to a kind of double-fluidized-bed reaction system.
Background technology
Gasification technology can realize that the solid fuels such as coal and biomass clean and effective utilizes, wherein vapor fluidized gasification
Because can Effec-tive Function under normal pressure due to by industry extensive concern and research.Since steam gasification process is absorbed heat, thus need
Additional heat maintains gasification to be carried out continuously, and industrially realizes this partial heat generally by combustion parts fuel
Supply.For single gasification furnace, if using air burning heat supply, a large amount of N in air2It is dense that combustible component in combustion gas can be diluted
Degree reduces the quality of combustion gas.If gasified using oxygen-enriched combusting, preparing additional oxygen needs to consume additional energy, so as to
Reduce the efficiency of gasification furnace.
In the prior art, can generally be solved the above problems using double-fluidized-bed gasification technology, but current gasification technology into
This is relatively high, especially makes to be applied in the low-quality energy of such as biomass, the cost of existing double-fluidized-bed gasification technology is anti-
It is and higher.Meanwhile biomass energy etc. needs vapor as gasifying agent mostly, and generate steam and require the expenditure of energy, if sharp
Realize that steam supply can reduce gasification furnace additional energy with the heat of double-fluidized-bed gasification furnace.
Therefore, it is necessary to carry out appropriate reconstruction to current double-fluidized-bed gasification technology, a kind of double-fluidized-bed reaction is provided
System.
Invention content
It is an object of the present invention to provide a kind of double-fluidized-bed reaction system, to solve current double-fluidized-bed gasification skill
The cost of art is excessively high, and realize vapor automatically supply when be difficult to control steam production the problem of.
In order to achieve the above objectives, the present invention uses following technical proposals：
A kind of double-fluidized-bed reaction system, including gasification furnace, the first pipeline of combustion furnace and the connection gasification furnace and the
Bed material is delivered to gasification furnace by combustion furnace equipped with bed material, first pipeline in two pipelines, the gasification furnace and combustion furnace, institute
It states the second pipeline and bed material is delivered to combustion furnace by gasification furnace；First pipeline includes the first branch road and the second branch road, described
One of first branch road and the second branch road are arranged to the evaporation tube road equipped with steam generator, and the steam generator is used
The gasification furnace is delivered in will be increased to the water in evaporation tube road and be heated to be steam and pass through vapor line.
Preferably, the steam generator is spiral tube exchanger, and the spiral tube exchanger disk is located at the evaporation tube
On the lateral wall of road.
Preferably, the upstream position setting auxiliary evaporator of the evaporation tube road, the auxiliary evaporator are used to accelerate bed
The evaporation of water in material.
Preferably, the intersection of first branch pipe and the second branch pipe is provided with flow distribution plate, the flow distribution plate control evaporation
The bed material flow of pipeline.
Preferably, the gasification furnace is bubbling bed gasification furnace.
Preferably, the combustion furnace is riser combustion furnace.
Preferably, the bed material of the gasification furnace and combustion furnace is quartz sand.
Beneficial effects of the present invention are as follows：
The present invention provides a kind of double-fluidized-bed reaction system, which can realize double-fluidized-bed gasification furnace vapor
It automatically supplies, and the output of evaporator can be changed into the bed material amount of evaporation tube road by changing, so as to flexibly control production
Vapour amount.The invention can reduce or even avoid, using external steam generating system, so as to make gasification furnace integrally compacter, can carry
The economy of high gasifier operation reduces the operating cost of gasification furnace.
Description of the drawings
The specific embodiment of the present invention is described in further detail below in conjunction with the accompanying drawings.
Fig. 1 shows a kind of double-fluidized-bed reaction system flow diagram provided by the invention.
Specific embodiment
In order to illustrate more clearly of the present invention, the present invention is done further with reference to preferred embodiments and drawings
It is bright.Similar component is indicated with identical reference numeral in attached drawing.It will be appreciated by those skilled in the art that institute is specific below
The content of description is illustrative and be not restrictive, and should not be limited the scope of the invention with this.
If Fig. 1 shows a kind of double-fluidized-bed reaction system flow diagram provided by the invention, provided by the invention one
In a specific embodiment, which includes the first of gasification furnace 1, combustion furnace 2 and the connection gasification furnace 1
Bed material is housed, first pipeline is defeated by combustion furnace 2 by bed material in pipeline and the second pipeline 32, the gasification furnace 1 and combustion furnace 2
It send to gasification furnace 1, bed material is delivered to combustion furnace 2 by second pipeline 32 by gasification furnace 1；First pipeline includes the first discrimination
Road and the second branch road, one of first branch road and the second branch road are arranged to the evaporation tube road equipped with steam generator
31, the water that the steam generator is used to will be increased in evaporation tube road 31, which is heated to be steam and passes through vapor line, is delivered to institute
State gasification furnace 1.Water in the bed material is to be added in bed material by 31 downstream position of evaporation tube road adverse current, through evaporation tube road 31 by bed material
Bring gasification furnace 1 into.Optionally, the gasification furnace 1 is bubbling bed gasification furnace 1, and the combustion furnace 2 is riser combustion furnace 2.
The present invention provides a kind of double-fluidized-bed reaction system, which can realize that double-fluidized-bed 1 water of gasification furnace steams
Gas automatically supplies, and can change the output of evaporator into the bed material amount of evaporation tube road 31 by changing, so as to flexibly control
Steam production processed.The invention can be reduced or even be avoided using external steam generating system, so as to make gasification furnace 1 is whole more to step up
It gathers, the economy of the operation of gasification furnace 1 can be improved, reduce the operating cost of gasification furnace 1.
Optionally, the bed material of the gasification furnace 1 and combustion furnace 2 is quartz sand.
Quartz sand is heat-resist, stable reaction, and heat absorption can be used as rapidly ideal bed material.
As a kind of perferred technical scheme, the steam generator be spiral tube exchanger, the spiral tube exchanger
Disk is located on 31 lateral wall of evaporation tube road.
Compared to other types heat exchanger, spiral tube exchanger has the advantages of heating speed is fast, and heat exchange efficiency is high, and
It can be closely bonded with pipeline, reduce heat exchange loss, improve heat transfer efficiency.
Certainly, in order to avoid single heat exchanger heat supply is insufficient or reaction process in generate failure, it is impossible to provide enough
Heat, therefore auxiliary evaporator is set in the upstream position of evaporation tube road 31, the auxiliary evaporator is used to accelerate water in bed material
Evaporation.
When heat exchanger heat supply deficiency, auxiliary evaporator starts and provides heat for bed material, it should be noted that described auxiliary
The power of evaporator is helped to be traditionally arranged to be smaller than spiral tube exchanger, but not necessarily, the present invention does not limit, in addition, auxiliary
The number of evaporator can be 1 either 2 or multiple, and those skilled in the art understand, above-mentioned setting can be according to reality
Situation is adaptively adjusted, and the present invention is not limited thereto.
Preferably, the intersection of first branch pipe and the second branch pipe is provided with flow distribution plate 33, and the flow distribution plate 33 controls
The bed material flow of evaporation tube road 31.
In the preferred embodiment, flow distribution plate 33 can increase or reduce the first branch road and the second branch road by rotation
Bed material inlet area, so as to control the bed material flow in the first branch road and the second branch road, in the above embodiment of the present invention, evaporation
Pipeline 31, which is capable of providing heat, makes the water evaporation in bed material be vapor, therefore.It is steamed by the way that simple flow distribution plate 33 is i.e. controllable
The content of the water for vapor is sent out, so as to flexibly control steam production.
For the present invention by taking once specific experiment as an example, bed material can be quartz sand, in certain specific experiment, bubbling
Bed weight 55kg, bubbling bed diameter about 0.3m, bed high about 1m, the entire high about 2.5m of bubbling bed gasification furnace 1 in bed gasification furnace 1.
Riser diameter about 0.9m, high about 3m.The cycle flux of riser is 50kg/m2/s.The bituminous coal of 10kg/h passes through screw feeder
Machine is sent into double-fluidized-bed bubbling bed gasification furnace 1 after moisture evaporation, pyrolysis and coke gasification, and water coal quality ratio is 1：1, just
Beginning bed preheating temperature is 800.The cold water of 10kg/h is flowed by helix tube heater lower end, by with following in evaporation tube road 31
Ring bed material reverse heat-exchange becomes steam, enters back into the air compartment of bubbling bed gasification furnace 1, the fluidized wind as fluidized-bed gasification furnace 1
And gasifying agent.It is found by calculating, the cold water that lower 25 DEG C of 10kg/h flows is after evaporator evaporates and is mixed with cycle bed material
Mixing temperature can reach 900 degree or so, the heat absorption demand of bubbling bed gasification furnace 1 and the confession of gasifying agent can be fully met
It gives.
Obviously, the above embodiment of the present invention be only to clearly illustrate example of the present invention, and not be pair
The restriction of embodiments of the present invention for those of ordinary skill in the art, may be used also on the basis of the above description
To make other variations or changes in different ways, all embodiments can not be exhaustive here, it is every to belong to this hair
The obvious changes or variations that bright technical solution is extended out are still in the row of protection scope of the present invention.
Claims (7)
1. a kind of double-fluidized-bed reaction system, which is characterized in that include the first of gasification furnace, combustion furnace and the connection gasification furnace
Bed material is delivered to by combustion furnace equipped with bed material, first pipeline in pipeline and the second pipeline, the gasification furnace and combustion furnace
Bed material is delivered to combustion furnace by gasification furnace, second pipeline by gasification furnace；
First pipeline includes the first branch road and the second branch road, and one of first branch road and the second branch road are set
To be equipped with the evaporation tube road of steam generator, the water that the steam generator is used to will be increased in evaporation tube road is heated to be steam
And pass through vapor line and be delivered to the gasification furnace.
2. system according to claim 1, which is characterized in that the steam generator be spiral tube exchanger, the spiral
Heat exchange of heat pipe disk is located on the evaporation tube road lateral wall.
3. system according to claim 1, which is characterized in that the upstream position setting auxiliary evaporator of the evaporation tube road,
The auxiliary evaporator is used to accelerate the evaporation of water in bed material.
4. system according to claim 1, which is characterized in that the intersection of first branch pipe and the second branch pipe is provided with point
Flowing plate, the bed material flow of the flow distribution plate control evaporation tube road.
5. system according to claim 1, which is characterized in that the gasification furnace is bubbling bed gasification furnace.
6. system according to claim 1, which is characterized in that the combustion furnace is riser combustion furnace.
7. system according to claim 1, which is characterized in that the bed material of the gasification furnace and combustion furnace is quartz sand.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711391427.9A CN108264937B (en) | 2017-12-21 | 2017-12-21 | Double fluidized bed reaction system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711391427.9A CN108264937B (en) | 2017-12-21 | 2017-12-21 | Double fluidized bed reaction system |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN108264937A true CN108264937A (en) | 2018-07-10 |
| CN108264937B CN108264937B (en) | 2020-09-04 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201711391427.9A Expired - Fee Related CN108264937B (en) | 2017-12-21 | 2017-12-21 | Double fluidized bed reaction system |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112899032A (en) * | 2021-01-18 | 2021-06-04 | 北京交通大学 | Two-section type double bubbling bed hydrogen production device |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2010254728A (en) * | 2009-04-21 | 2010-11-11 | Ihi Corp | Raw material charging device of gasification equipment |
| CN103773507A (en) * | 2014-01-23 | 2014-05-07 | 上海锅炉厂有限公司 | Dual-bed burning and gasification poly-generation device and method |
| CN104910986A (en) * | 2015-06-19 | 2015-09-16 | 合肥德博生物能源科技有限公司 | Device and process for preparing natural gas by virtue of double-fluidization bed gasification of biomass |
| CN104955923A (en) * | 2013-03-21 | 2015-09-30 | 株式会社Ihi | Gasified-gas generation system |
-
2017
- 2017-12-21 CN CN201711391427.9A patent/CN108264937B/en not_active Expired - Fee Related
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2010254728A (en) * | 2009-04-21 | 2010-11-11 | Ihi Corp | Raw material charging device of gasification equipment |
| CN104955923A (en) * | 2013-03-21 | 2015-09-30 | 株式会社Ihi | Gasified-gas generation system |
| CN103773507A (en) * | 2014-01-23 | 2014-05-07 | 上海锅炉厂有限公司 | Dual-bed burning and gasification poly-generation device and method |
| CN104910986A (en) * | 2015-06-19 | 2015-09-16 | 合肥德博生物能源科技有限公司 | Device and process for preparing natural gas by virtue of double-fluidization bed gasification of biomass |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112899032A (en) * | 2021-01-18 | 2021-06-04 | 北京交通大学 | Two-section type double bubbling bed hydrogen production device |
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| CN108264937B (en) | 2020-09-04 |
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