CN205635505U - Full processing system of hot flying dust of circulating fluidized bed powder coal gasification cold -peace - Google Patents
Full processing system of hot flying dust of circulating fluidized bed powder coal gasification cold -peace Download PDFInfo
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- CN205635505U CN205635505U CN201620257594.9U CN201620257594U CN205635505U CN 205635505 U CN205635505 U CN 205635505U CN 201620257594 U CN201620257594 U CN 201620257594U CN 205635505 U CN205635505 U CN 205635505U
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- returning charge
- charge channel
- cold
- flying dust
- ash
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Abstract
The utility model discloses the full processing system of cold ash of circulating fluidized bed powder coal gasification and hot flying dust relates to whole hot flying dusts of recycle and the cold ash of external source. Hot fly ash treatment system: include the fluidized bed gasifica tion stove, cyclone, returning charge passageway pipe, the fluidized bed gasifica tion stove that are linked together according to the order circulation, fluidized bed gasifica tion stove upper portion gas outlet and cyclone entry intercommunication, export of cyclone flying dust and returning charge passageway pipe entrance intercommunication, returning charge passageway pipe exit communicates with the fluidized bed gasifica tion stove, cold grey processing system: include the grey storehouse of the cold that is linked together according to the order, cone pump, ash conveying pipe, returning charge passageway pipe and fluidized bed gasifica tion stove. The advantage lies in: can force gasification reaction with whole flying dusts of separation among the gasification system, contain 10% carbon residue in the flying dust that messenger's returning charge passageway duct flow goes out, is the carbon residue 8 by original in the gasification grate sediment does 10% fall for 4 6%.
Description
Technical field
This utility model relates to the fluidized system manufacturing coal gas, is specially and the flying dust separated in coal gas returns to stream
Change in bed gasification furnace, recycle whole hot flying dust and the cold ash of external source, carry out the flyash recycling that flyash regasifies
Fluidized system.
Background technology
Ciculation fluidized bed gasification technology uses short grained coal as gasified raw material, utilizes the flow velocity of gasifying agent to make coal stream
Change.Coal and gasifying agent at high temperature carry out the chemical reaction of complexity, generate coal gas.Due to the inhomogeneities of coal particles,
The coal terminal dropping velocity that some granularities are less is less than the flow velocity of gasifying agent, this part small-particle coal charcoal quilt also the most completely
Gasification is just entrained with gasification furnace by coal gas.The flying dust carried secretly in these short grained entrainment referred to as coal gas.In flying dust about
Containing the available charcoal of 30-40%, this part separates through cyclone dust extractor containing charcoal granule, manufactures coal gas through fluid bed
Ash return pipe in system, returns in gasification furnace, and the small-particle coal charcoal not the most being fully vaporized prior gasifies utilization again,
The loss of coal can be decreased, improve the utilization rate of coal.
The Chinese invention patent of Publication No. CN204185439U gives one " with forcing returning charge gasifier bed system
Manufacture coal gas fluidized system ", including fluidized-bed gasification furnace, cyclone dust extractor, returning charge channel, flow temperature, pressure
ICU and each thermometric, pressure instrumentation etc., it is characterised in that be provided with returning charge channel, separate cyclone dust extractor
Flying dust enter returning charge channel carry out forced gasification reaction, the flying dust solving recovery carries out gasification reaction in gasification furnace
Drawback (concrete visible patent CN204185439U), reduce the carbon residue in flying dust and slag.
Above patent has the drawback that the flying dust that can separate only for cyclone dust extractor processes.Owing to whirlwind removes
Dirt device separation efficiency and the impact of particle size of fly ash, flying dust is not completely separated.The separation efficiency of cyclone dust extractor is about
90%, separable particle diameter more than the particulate matter of 10 μm, i.e. cyclone dust extractor when properly functioning particle diameter less than 10 μm and
10% particle diameter does not separate more than the particulate matter of 10 μm.(flying dust is dense for the dust content of cyclone entrance coal gas
Degree) it is about 70g/Nm3-150g/Nm3, and the dustiness cleaning coal gas requirement is 50mg/Nm3, i.e. in follow-up purification
During also have 70g/Nm3-150g/Nm3Flying dust settle down (according to gasification ature of coal).If according to producing 4 per hour
The ten thousand vertical coal gas of mark calculate, and 2.8t-6t flying dust will be had the most per hour to need to process.The flying dust amount that need to process is bigger.
Existing technique has for the processing method of the flying dust of separation in subsequent purification system: stack；Former as internal combustion brick
Material；Second-time burning is for generating etc..The process of this several ways has been an off the process of fluidized-bed gasification furnace, i.e. flying dust not
It is used further to gasification.For gasification system, the employing of these several processing modes makes the consumption of raw materials of gasification system increase
Adding, efficiency of carbon con version reduces.Additionally, the selection of processing method environment to external world has dependency, i.e. require have near factory
Power plant or brick field, just can process flying dust, otherwise can only stack, cause environmental pollution.
Summary of the invention
This utility model provides in the pipeline that flying dust reclaims, and the recovery flying dust being totally separated is carried out forced gasification reaction,
Improve gasification furnace and gasify the manufacture coal gas fluidized system of utilization ratio to reclaiming charcoal in flying dust.
The returning charge meaning of this utility model indication is after gasification furnace outlet enters cyclone dust extractor, flying from cyclone dust extractor
Ash outlet, and the flying dust of the utilization to be recycled during subsequent purification.Reclaim flying dust and returning charge flying dust and returning charge flyash is
The identical concept.
Structure of the present utility model is:
The fluidized bed pulverized coal gasification full processing system of cold grey and hot flying dust, processes system including hot flying dust treating system and cold ash
System combines；
Hot flying dust treating system: include according to order circulate be connected fluidized-bed gasification furnace 1, cyclone dust extractor 2, returning charge
Channel 3, fluidized-bed gasification furnace 1；The outlet of fluidized-bed gasification furnace 1 upper gas connects with cyclone dust extractor 2 entrance；
The outlet of cyclone dust extractor 2 flying dust connects with returning charge channel 3 porch；Returning charge channel 3 exit and fluidized gasification
The fuel inlet connection of stove 1；
Wherein, the structure of returning charge channel 3: be provided with steam control valve 4 and oxygen-containing gasification in returning charge channel 3 porch
Agent control valve 5；It is provided with returning charge between returning charge channel porch and steam control valve 4 and oxygenous agent control valve 5
Channel top temperature measuring gauge 6 and returning charge channel top pressure gauge 9；Connect on steam control valve 4 and have steam-flow meter 12,
Steam-flow meter 12 communicates with jet chimney；Connect in oxygenous agent control valve 5 and have oxygenous agent effusion meter 13,
Oxygenous agent effusion meter 13 communicates with oxygen agent pipeline；It is provided with in the middle part of returning charge channel 3 in the middle part of returning charge channel and surveys
Pressure gauge 10 in the middle part of temperature table 7 and returning charge channel；Returning charge channel 3 bottom is provided with returning charge channel bottom temperature measuring gauge 8
With returning charge channel bottom pressure gauge 11；
Cold ash treatment system: include that the cold ash silo 14 being connected according to order, cone pump 15, ash conveying pipe 17, returning charge are led to
Deferent 3 and fluidized-bed gasification furnace 1；In the upper position of returning charge channel 3, both oxygenous agent control valve 5 with return
In the middle part of material channel, the upper position of returning charge channel 3 between pressure gauge 10 is provided with cold ash and gas fluid-mixing entrance
16；The cold ash of cone pump 15 and gas fluid-mixing export the cold ash with returning charge channel 3 and gas fluid-mixing entrance
16 are connected by ash conveying pipe 17, and ash conveying pipe 17 is provided with ash conveying pipe pressure gauge 18；The cold ash of cone pump 15 enters
Mouthful with the cold ash outlet of cold ash silo 14, the pipeline that cone pump 15 connects with cold ash silo 14 is provided with cold grey effusion meter
19；The gas entry pipeline of cone pump 15 is provided with gas flow meter 20.
The effect of the full processing system of fluidized bed pulverized coal gasification flying dust is the flying dust not only separated by cyclone dust extractor 2
Return to returning charge channel 3 is carried out forced gasification reaction；And utilize the technical characterstic of returning charge channel 3 itself, will
Cyclone dust extractor 2 is unsegregated, but must separate in subsequent purification system, the lowered cold flying dust of temperature is also
Return to returning charge channel 3 is carried out forced gasification reaction, i.e. the whole flying dusts produced in gasification system are carried out gas again
Change processes.
Cold flying dust in order to obtain cyclone dust extractor 2 hot flying dust out and subsequent treatment in returning charge channel 3 enters
Row forced gasification reacts, and the operating process of the use full processing system of circulation fluidized bed coal gasifying flying dust is, from steam control valve
4 and oxygenous agent control valve 5 spray into steam gasification agent and oxygenous agent respectively, cyclone dust extractor 2 is collected
Flying dust is entered returning charge channel 3 by the connectivity part of cyclone dust extractor 2 and returning charge channel 3, and it is cold that ash conveying pipe 17 carries
Flying dust enters in returning charge channel 3 by cold ash and gas fluid-mixing entrance 16, the oxygenous agent sprayed into be passed through
Flying dust mixes, the heat utilizing the heat of high temperature of cyclone dust extractor 2 returning charge, oxygenous agent to produce with burning, makes heat fly
Carbon residue in grey and cold flying dust is gasified in returning charge channel 3, forms coal gas.
Returning charge channel 3 is not only the passage of flying dust circulation, or the gasification reactor vessel of coal, by returning charge channel 3
It is set to 5-8 rice, the carbon residue in flying dust can be made to have time enough to complete gasification reaction.
Also have one and make hot flying dust treating system and the flow of cold ash treatment system cooperating, temperature and pressure Comprehensive Control
Device 100；This flow, temperature and pressure ICU 100 respectively with steam control valve 4, oxygenous agent control valve 5,
Returning charge channel top temperature measuring gauge 6, returning charge channel top pressure gauge 9, steam-flow meter 12, oxygenous agent flow
Meter 13, pressure gauge 10 in the middle part of temperature measuring gauge 7, returning charge channel in the middle part of returning charge channel, returning charge channel bottom temperature measuring gauge 8,
Returning charge channel bottom pressure gauge 11, ash conveying pipe pressure gauge 18, cold ash effusion meter 19 and gas flow meter 20 connect.
Flow, the effect of temperature and pressure ICU 100 be make cyclone dust extractor 2 separate hot flying dust, after
The cold flying dust, steam and the oxygenous agent that obtain in continuous cleaning system can control the state in optimum mix.Monitoring simultaneously,
The regulation temperature of whole system, pressure, make system be in good running status.
Advantage of the present utility model:
1, the flying dust producing recirculating fluidized bed gasification, purification all carries out forced gasification reaction through return returning charge channel,
Process for flying dust provides a new processing route, makes the process factor the most limited of flying dust affect, but makees
Process for available energy, the most also can reach saving combustion material, the effect of protection environment.
2, in the flying dust separated during the application of returning charge channel can make whole gasification system, carbon residue enters at the flying dust of 30-40%
Row forced gasification reacts, and makes to contain in the flying dust that returning charge channel flows out 10% carbon residue.In flying dust, substantial amounts of carbon residue becomes coal gas.
3, flying dust is after forced gasification reacts, and ash proportion increases, and enters into more free settling in gasification furnace, makes gasification furnace furnace bottom
Lime-ash carbon residue ratio reduce, in gasification furnace deslagging, carbon residue is reduced to 4-6% by original for 8-10% after measured.
Accompanying drawing explanation
Fig. 1 is structural representation of the present utility model；
1-fluidized-bed gasification furnace；2-cyclone dust extractor；3-returning charge channel；4-steam control valve；The oxygenous agent of 5-
Control valve；6-returning charge channel top temperature measuring gauge；Temperature measuring gauge in the middle part of 7-returning charge channel；8-returning charge channel bottom
Temperature measuring gauge；9-returning charge channel top pressure gauge；Pressure gauge in the middle part of 10-returning charge channel；Under 11-returning charge channel
Portion's pressure gauge；12-steam-flow meter；13-oxygenous agent effusion meter；The cold ash silo of 14-；15-cone pump；16-
Cold ash and gas fluid-mixing entrance；17-ash conveying pipe；18-ash conveying pipe pressure gauge；19-flying dust effusion meter；20
-gas flow meter；100-flow, temperature and pressure ICU.
Detailed description of the invention
Embodiment 1, the fluidized bed pulverized coal gasification full processing system of cold grey and hot flying dust
Such as Fig. 1, the fluidized bed pulverized coal gasification full processing system of cold grey and hot flying dust, at hot flying dust treating system and cold ash
Reason system in combination forms；
Hot flying dust treating system: include according to order circulate be connected fluidized-bed gasification furnace 1, cyclone dust extractor 2, returning charge
Channel 3, fluidized-bed gasification furnace 1；The outlet of fluidized-bed gasification furnace 1 upper gas connects with cyclone dust extractor 2 entrance,
The outlet of cyclone dust extractor 2 flying dust connects with returning charge channel 3 porch, returning charge channel 3 exit and fluidized gasification
The fuel inlet connection of stove 1；
Wherein, the structure of returning charge channel 3: be provided with steam control valve 4 and oxygen-containing gasification in returning charge channel 3 porch
Agent control valve 5；It is provided with returning charge between returning charge channel porch and steam control valve 4 and oxygenous agent control valve 5
Channel top temperature measuring gauge 6 and returning charge channel top pressure gauge 9；Connect on steam control valve 4 and have steam-flow meter 12,
Steam-flow meter 12 communicates with jet chimney；Connect in oxygenous agent control valve 5 and have oxygenous agent effusion meter 13,
Oxygenous agent effusion meter 13 communicates with oxygen agent pipeline；It is provided with in the middle part of returning charge channel 3 in the middle part of returning charge channel and surveys
Pressure gauge 10 in the middle part of temperature table 7 and returning charge channel；Returning charge channel 3 bottom is provided with returning charge channel bottom temperature measuring gauge 8
With returning charge channel bottom pressure gauge 11；
Cold ash treatment system: include that the cold ash silo 14 being connected according to order, cone pump 15, ash conveying pipe 17, returning charge are led to
Deferent 3 and fluidized-bed gasification furnace 1；In the upper position of returning charge channel 3, both oxygenous agent control valve 5 with return
In the middle part of material channel, the upper position of returning charge channel 3 between pressure gauge 10 is provided with cold ash and gas fluid-mixing entrance
16；The cold ash of cone pump 15 and gas fluid-mixing export the cold ash with returning charge channel 3 and gas fluid-mixing entrance
16 are connected by ash conveying pipe 17, and ash conveying pipe 17 is provided with ash conveying pipe pressure gauge 18；The cold ash of cone pump 15 enters
Mouthful with the cold ash outlet of cold ash silo 14, the pipeline that cone pump 15 connects with cold ash silo 14 is provided with cold grey effusion meter
19；The gas entry pipeline of cone pump 15 is provided with gas flow meter 20.
Also have one and make hot flying dust treating system and the flow of cold ash treatment system cooperating, temperature and pressure Comprehensive Control
Device 100；This flow, temperature and pressure ICU 100 respectively with steam control valve 4, oxygenous agent control valve 5,
Returning charge channel top temperature measuring gauge 6, returning charge channel top pressure gauge 9, steam-flow meter 12, oxygenous agent flow
Meter 13, pressure gauge 10 in the middle part of temperature measuring gauge 7, returning charge channel in the middle part of returning charge channel, returning charge channel bottom temperature measuring gauge 8,
Returning charge channel bottom pressure gauge 11, ash conveying pipe pressure gauge 18, cold ash effusion meter 19 and gas flow meter 20 connect.
Claims (2)
1. the full processing system of the cold grey and hot flying dust of fluidized bed pulverized coal gasification, including hot flying dust treating system and cold ash treatment system
Combine；
Hot flying dust treating system: include according to order circulate be connected fluidized-bed gasification furnace (1), cyclone dust extractor (2),
Returning charge channel (3), fluidized-bed gasification furnace (1)；The outlet of fluidized-bed gasification furnace (1) upper gas and cyclone dust extractor (2)
Entrance connects, and the outlet of cyclone dust extractor (2) flying dust connects with returning charge channel (3) porch, returning charge channel (3)
Exit connects with the fuel inlet of fluidized-bed gasification furnace (1)；
Wherein, the structure of returning charge channel (3): be provided with in returning charge channel (3) porch steam control valve (4) and
Oxygenous agent control valve (5)；In returning charge channel porch and steam control valve (4) and oxygenous agent control valve (5)
Between be provided with returning charge channel top temperature measuring gauge (6) and returning charge channel top pressure gauge (9)；Steam control valve (4)
Upper connection has steam-flow meter (12), steam-flow meter (12) to communicate with jet chimney；Oxygenous agent control valve (5)
Upper connection has oxygenous agent effusion meter (13), oxygenous agent effusion meter (13) to communicate with oxygen agent pipeline；Returning charge
Channel (3) middle part is provided with in the middle part of returning charge channel pressure gauge (10) in the middle part of temperature measuring gauge (7) and returning charge channel；Returning charge
Channel (3) bottom is provided with returning charge channel bottom temperature measuring gauge (8) and returning charge channel bottom pressure gauge (11)；
Cold ash treatment system: the cold ash silo (14) that includes being connected according to order, cone pump (15), ash conveying pipe (17),
Returning charge channel (3) and fluidized-bed gasification furnace (1)；In the upper position of returning charge channel (3), both in oxygen-containing gasification
In the middle part of agent control valve (5) and returning charge channel, the upper position of returning charge channel (3) between pressure gauge (10) is provided with
Cold ash and gas fluid-mixing entrance (16)；The cold ash of cone pump (15) and gas fluid-mixing export and returning charge channel
(3) cold ash is connected by ash conveying pipe (17) with gas fluid-mixing entrance (16), and ash conveying pipe sets on (17)
There is ash conveying pipe pressure gauge (18)；The cold ash entrance of cone pump (15) and the cold ash outlet of cold ash silo (14), storehouse
The pipeline that formula pump (15) connects with cold ash silo (14) is provided with cold ash effusion meter (19)；The coal gas of cone pump (15) enters
Mouth pipeline is provided with gas flow meter (20).
The fluidized bed pulverized coal gasification the most according to claim 1 full processing system of cold grey and hot flying dust, it is characterised in that:
Also have one and make hot flying dust treating system and the flow of cold ash treatment system cooperating, temperature and pressure ICU
(100)；This flow, temperature and pressure ICU (100) respectively with steam control valve (4), oxygenous agent control
Valve processed (5), returning charge channel top temperature measuring gauge (6), returning charge channel top pressure gauge (9), steam-flow meter (12),
Pressure gauge (10) in the middle part of temperature measuring gauge (7), returning charge channel in the middle part of oxygenous agent effusion meter (13), returning charge channel,
Returning charge channel bottom temperature measuring gauge (8), returning charge channel bottom pressure gauge (11), ash conveying pipe pressure gauge (18), cold
Ash effusion meter (19) and gas flow meter (20) connect.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620257594.9U CN205635505U (en) | 2016-03-25 | 2016-03-25 | Full processing system of hot flying dust of circulating fluidized bed powder coal gasification cold -peace |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620257594.9U CN205635505U (en) | 2016-03-25 | 2016-03-25 | Full processing system of hot flying dust of circulating fluidized bed powder coal gasification cold -peace |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205635505U true CN205635505U (en) | 2016-10-12 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620257594.9U Expired - Fee Related CN205635505U (en) | 2016-03-25 | 2016-03-25 | Full processing system of hot flying dust of circulating fluidized bed powder coal gasification cold -peace |
Country Status (1)
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| CN (1) | CN205635505U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113265272A (en) * | 2021-05-11 | 2021-08-17 | 新奥科技发展有限公司 | Return riser structure, coal gasification system and method for returning materials |
-
2016
- 2016-03-25 CN CN201620257594.9U patent/CN205635505U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113265272A (en) * | 2021-05-11 | 2021-08-17 | 新奥科技发展有限公司 | Return riser structure, coal gasification system and method for returning materials |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20161012 Termination date: 20200325 |