CN105972586A - Circulating fluidized bed boiler fly ash forced circulation system and process - Google Patents
Circulating fluidized bed boiler fly ash forced circulation system and process Download PDFInfo
- Publication number
- CN105972586A CN105972586A CN201610597421.6A CN201610597421A CN105972586A CN 105972586 A CN105972586 A CN 105972586A CN 201610597421 A CN201610597421 A CN 201610597421A CN 105972586 A CN105972586 A CN 105972586A
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- Prior art keywords
- boiler
- ejector pump
- flying dust
- forced circulation
- circulation system
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23C—METHODS OR APPARATUS FOR COMBUSTION USING FLUID FUEL OR SOLID FUEL SUSPENDED IN A CARRIER GAS OR AIR
- F23C10/00—Fluidised bed combustion apparatus
- F23C10/18—Details; Accessories
- F23C10/28—Control devices specially adapted for fluidised bed, combustion apparatus
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23C—METHODS OR APPARATUS FOR COMBUSTION USING FLUID FUEL OR SOLID FUEL SUSPENDED IN A CARRIER GAS OR AIR
- F23C10/00—Fluidised bed combustion apparatus
- F23C10/02—Fluidised bed combustion apparatus with means specially adapted for achieving or promoting a circulating movement of particles within the bed or for a recirculation of particles entrained from the bed
- F23C10/04—Fluidised bed combustion apparatus with means specially adapted for achieving or promoting a circulating movement of particles within the bed or for a recirculation of particles entrained from the bed the particles being circulated to a section, e.g. a heat-exchange section or a return duct, at least partially shielded from the combustion zone, before being reintroduced into the combustion zone
- F23C10/08—Fluidised bed combustion apparatus with means specially adapted for achieving or promoting a circulating movement of particles within the bed or for a recirculation of particles entrained from the bed the particles being circulated to a section, e.g. a heat-exchange section or a return duct, at least partially shielded from the combustion zone, before being reintroduced into the combustion zone characterised by the arrangement of separation apparatus, e.g. cyclones, for separating particles from the flue gases
- F23C10/10—Fluidised bed combustion apparatus with means specially adapted for achieving or promoting a circulating movement of particles within the bed or for a recirculation of particles entrained from the bed the particles being circulated to a section, e.g. a heat-exchange section or a return duct, at least partially shielded from the combustion zone, before being reintroduced into the combustion zone characterised by the arrangement of separation apparatus, e.g. cyclones, for separating particles from the flue gases the separation apparatus being located outside the combustion chamber
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23J—REMOVAL OR TREATMENT OF COMBUSTION PRODUCTS OR COMBUSTION RESIDUES; FLUES
- F23J7/00—Arrangement of devices for supplying chemicals to fire
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23C—METHODS OR APPARATUS FOR COMBUSTION USING FLUID FUEL OR SOLID FUEL SUSPENDED IN A CARRIER GAS OR AIR
- F23C2206/00—Fluidised bed combustion
- F23C2206/10—Circulating fluidised bed
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23J—REMOVAL OR TREATMENT OF COMBUSTION PRODUCTS OR COMBUSTION RESIDUES; FLUES
- F23J2215/00—Preventing emissions
- F23J2215/20—Sulfur; Compounds thereof
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Fluidized-Bed Combustion And Resonant Combustion (AREA)
Abstract
The invention provides a circulating fluidized bed boiler fly ash forced circulation system and process and belongs to the technical field of boiler equipment. The circulating fluidized bed boiler fly ash forced circulation system comprises electric dust removal equipment, an ash bucket and a boiler. The ash bucket is located below the electric dust removal equipment. The system further comprises an air blower and an injection pump. The air inlet end of the injection pump is communicated with an air outlet of the air blower, the air outlet end of the injection pump is communicated with the boiler through a pipeline, and a feed end of the injection pump is communicated with the bottom of the ash bucket. Fly ash can be reused, the use efficiency of a desulfurizing agent can be improved, the operating cost can be reduced, and the desulfurizing effect is improved. In addition, due to the fact that a large amount of tail low-temperature fly ash is led into the boiler to be reused, the operating boiler temperature under the working condition of high loads can be reduced, the generation amount of heat reaction type NOx is greatly reduced, later denitration is promoted better, the content of nitric oxide in tail gas is reduced, and it is guaranteed that the tail gas is exhausted after reaching the standard.
Description
Technical field
The invention belongs to boiler plant technical field, particularly relate to a kind of CFBB flying dust forced circulation system and follow
Ring technique.
Background technology
Technology of Circulating Fluidized Bed Boiler, is a kind of efficient, low stain clean-burning technology, is rapidly developed in recent years.But,
Existing recirculating fluidized bed all uses natural circulation mode, and the circulation of its material is inner equilibrium circulation, and its circulating ratio is being typically
The system design phase is just fixed up, and is difficult to master control again and controls circulating ratio after system is run；When therefore causing actual motion, right
The bad control of bed temperature in boiler, typically can only control bed temperature by regulation pan feeding flow.Therefore, bed temperature mistake is often led to
High situation occurs.Further, due to the situation that bed temperature is too high, the generation frequently resulting in nitrogen oxide NOx increases, and causes nitrogen oxygen
The discharge of compound NOx exceeds standard.And along with country's raising to environmental requirement, the double alkali of conventional support furnace sorbent injection desulfurization+afterbody
The thermo-power station of wet desulphurization device is when carrying out desulphurization and denitration, and its all the period of time stably reaching standard difficult problem gradually manifests, actual fortune
In row, sulfur dioxide controls instability, fluctuates greatly, easily exceeds standard, and nitrogen oxides changes often in facing with Combustion Operation of Boilers simultaneously
Closely exceed standard or the running status that exceeds standard；It addition, under using traditional calcium injection and desulfurization process mode, the consumption of desulfurizing agent is abnormal bigger than normal,
(testing through inventor, in this type of flying dust, calcium oxide content about exists often to there are a large amount of desulfurizing agent not utilized in flying dust
In the range of 30%～40%), the utilization rate therefore causing desulfurizing agent is relatively low, and it is high to ultimately result in operating cost.
Summary of the invention
Present invention solves the technical problem that being to provide one can improve desulfurizing agent utilization ratio, improves desulfurization off sulfide effect simultaneously, can
Guarantee CFBB flying dust forced circulation system and the circulation technology of equipment operation up to standard, and provided by the present invention
Circulation technology, can introduce realization by the circulation of flying dust and control the active regulation of bed temperature.
The technical solution adopted for the present invention to solve the technical problems is: CFBB flying dust forced circulation system, described
CFBB uses furnace sorbent injection desulfurization technique；Described blood circulation includes boiler, electric dust-removing equipment and is positioned at electric precipitation
Ash bucket below equipment, also includes aerator and ejector pump, and the inlet end of described ejector pump is by the air outlet of pipeline with aerator
Connection, the outlet side of described ejector pump is connected with boiler by pipeline, and the feed end of described ejector pump connects with the bottom of ash bucket.
Further: be provided with on boiler and allow hole, the outlet side of described ejector pump be connected with the hole that allows on boiler by pipeline；
Described make hole corresponding with the emulsion zone in boiler.
Further: the feed end of ejector pump is connected by tremie pipe with the bottom of ash bucket.
Further: at the feed end of ejector pump, be provided with push-pull valve.
Further: described aerator is roots blower.
Further: the inwall at hopper bottom is provided with material position induction apparatus.
Further: also include control system, described control system ejector pump and boiler signal communication respectively.
It addition, the present invention also provides for a kind of CFBB flying dust forced circulation technique, it uses described in the invention described above
CFBB flying dust forced circulation system；The bed temperature T in boiler is obtained in real time by control system；According to bed temperature T with
The magnitude relationship of design temperature scope T0, is controlled the uninterrupted of ejector pump injection flying dust, so that bed temperature T is steady by control system
Being scheduled in T0, wherein T0 is in the range of 800～950 DEG C；Concrete control is as follows: as T ∈ T0, the flow of ejector pump does not does
Adjust；As T ＜ T0, reduce the flow of ejector pump；As T ＞ T0, increase the flow of ejector pump.
Further: wherein T0 is in the range of 830～860 DEG C.
Further: the 5%-20% that flow be current ejector pump flow of ejector pump is increased or decreased every time.
Further: the flying dust sprayed by ejector pump is added directly in the emulsion zone of boiler.
Beneficial effects of the present invention: CFBB flying dust forced circulation system of the present invention, it is in original inner equilibrium
On the basis of circulation, by arranging aerator and jet pump structure, utilize the air-flow that aerator produces, and by ejector pump by ash
The re-circulation actively of flying dust in bucket joins in boiler, can increase boiler further on the basis of original Natural Circulation
Circulating ratio；Therefore unemployed desulfurizing agent in flying dust can be realized recycling, the service efficiency of desulfurizing agent can be improved,
Reduce operating cost, improve desulfurized effect, it is ensured that qualified discharge simultaneously.Further, owing to substantial amounts of afterbody low temperature flying dust is led back
Boiler recycles, therefore can reduce the operation bed temperature under high load capacity operating mode, greatly reduce the generation quantity of thermal-reactive NOx,
Being more beneficial for the later stage carries out denitration process, and reduces nitrogen oxide in tail gas content, it is ensured that qualified discharge.It addition, the present invention
Described circulation technology, it is by the flow-control to ejector pump injection flying dust, it is achieved the control to boiler bed temperature, and then in reality
On the basis of now actively carrying out flying dust recirculating utilization, also achieve the active to bed temperature and control, therefore can be without by adjusting
Joint material pan feeding flow controls bed temperature, and can increase the material concentration in boiler；And then raising desulfurized effect.
Accompanying drawing explanation
Fig. 1 is the simple connection relation schematic diagram of flying dust forced circulation system of the present invention；
Fig. 2 is the annexation schematic diagram of flying dust forced circulation system of the present invention；
Fig. 3 is the circuit connecting relation schematic diagram of control system；
Fig. 4 is the structural representation of circulating fluidized bed boiler；
Fig. 5 is process flow diagram；
Figure is labeled as: ash bucket 1, boiler 2, emulsion zone 21, transition region 22, dilute-phase zone 23, aerator 3, ejector pump 4,
Inlet end 41, outlet side 42, feed end 43, tremie pipe 5, push-pull valve 6, pipeline 7, electric dust-removing equipment 8, control system 9,
Material position induction apparatus 10, allow hole 11.
Detailed description of the invention
The present invention is further described with detailed description of the invention below in conjunction with the accompanying drawings.Wherein, recirculating fluidized bed pot of the present invention
Converter fly ash forced circulation system is to use under conditions of CFBB uses furnace sorbent injection desulfurization technique, to realize circulation
Utilize in flying dust and design for the purpose of the desulfurizing agent (generally calcium oxide CaO) of residual.And what is called furnace sorbent injection desulfurization, its
This is as prior art, is by injection corresponding desulfurizing agent (generally calcium carbonate CaCO in boiler3Deng material, pass through
Calcium oxide CaO after decomposition plays desulfurized effect) to realize a kind of technique of desulfurized effect.
Shown in as shown in Figure 1 to Figure 4, CFBB flying dust forced circulation system of the present invention, described ciculation fluidized
Bed boiler uses furnace sorbent injection desulfurization technique；Described blood circulation includes boiler 2, electric dust-removing equipment 8 and is positioned at electric dust-removing equipment 8
The ash bucket 1 of lower section, also includes aerator 3 and ejector pump 4, and the inlet end 41 of described ejector pump 4 is by pipeline and aerator 3
Air outlet connection, the outlet side 42 of described ejector pump 4 is connected with boiler 2 by pipeline 7, the feed end of described ejector pump 4
43 connect with the bottom of ash bucket 1.
Wherein, heretofore described electric dust-removing equipment 8, itself is prior art, and those skilled in the art can know it
Concrete structure and operation principle etc.；The electric dust-removing equipment 8 arranged in system of the present invention, its effect is for separating flying dust
In fine ash refer generally to particle diameter less than 50～100 μm, electric dust-removing equipment 8 has a preferable separating effect, and what it was separated
Containing a large amount of desulfurizing agent in fine ash, such as CaO, therefore, the present invention is by by the feed end 43 of ejector pump 4 and electric dust-removing equipment 8
The bottom connection of the ash bucket 1 of lower section, to realize the most again sending the flying dust containing unemployed desulfurizing agent separated in ash bucket 1
Back boiler 2 is interior and directly participates in desulphurization reaction, thus improves desulphurization reaction effect；And because the fine ash flying dust being reintroduced back to
The specific surface area of middle desulfurizing agent bigger than the desulfurizing agent microgranule directly participating in reacting in joining boiler 2 for the first time and after calcining 10 times and with
On, in therefore can making boiler 2, desulphurization reaction is more thoroughly with fully, and CaO utilization rate can be made to may be up to about more than 95%, far
Much larger than tradition spray calcium mode desulfuration efficiency index of the most attainable about 40% when calcium sulfur ratio is equal to 2.Certainly, general
Electric dust-removing equipment 8 is likely to be of multiple ash bucket 1, and the flying dust in an ash bucket 1 of the available wherein most upstream of the present invention, such as Fig. 2
Shown in；Or the flying dust in all ash buckets 1 can be utilized, it is only necessary to be attached by corresponding tremie pipe 5.
It addition, the effect of the aerator 3 in the present invention is to produce air-flow, ejector pump 4 then utilizes the air-flow that aerator 3 produces,
The flying dust added from feed end 43 is sent in boiler 2.
Aerator 3, can use the roots blower of routine, by the air outlet of roots blower by pipeline directly with the entering of ejector pump 4
Gas end 41 connects.Certainly, the air inlet that roots blower can directly utilize surrounding air, i.e. roots blower is the most unsettled, when
So, general, the structures such as corresponding filter can be set at the air inlet of roots blower.
Ejector pump 4 itself is prior art, and it utilizes the air-flow that aerator 3 produces, and can produce negative pressure at its feed end 43,
And utilize negative pressure to carry out material conveying；Not only can solve conventional Pneumatic conveyer conveying gas and fall string, blanking smooth the most not even under
The problem of material, and be particularly well-suited to material superjacent air space and be in the situation of negative pressure state.
The feed end 43 of above-mentioned ejector pump 4 connects with the bottom of ash bucket 1, and its effect is from above-mentioned charging by the flying dust in ash bucket 1
End 43 is incorporated in ejector pump 4, reuses in being then sent to boiler 2；General, can additionally increase under arranging accordingly
Material pipe 5, is i.e. connected the feed end 43 of ejector pump 4 with the bottom of ash bucket 1 by tremie pipe 5.It addition, in order to control flying dust
It is incorporated in ejector pump 4 by feed end 43, push-pull valve 6 can be set further at the feed end 43 of ejector pump 4；Plate
Valve 6 then can control the keying of feed end 43, and by controlling the aperture of push-pull valve 6, can play and control the speed that flying dust is introduced into
Degree, and then realize the regulation to flying dust introduction volume.
It addition, the present inventor is found through experiments, bottom is generally had to be divided into emulsion zone 21, transition to top at boiler 2
In the case of district 22, dilute-phase zone 23, again spurt into the flying dust in boiler 2 by ejector pump 4, if being added directly into pot
Time in emulsion zone 21 in stove 2, it can realize maximized recycling；To this end, as shown in Figure 4, the present invention is further
Can arrange on boiler 2 and allow hole 11, the outlet side 42 of described ejector pump 4 be connected with the hole 11 that allows on boiler 2 by pipeline；
Described make hole 11 corresponding with the emulsion zone 2 in boiler 2.
It addition, also can be provided with material position induction apparatus 10 by the inwall bottom ash bucket 1, its effect is to determine flying dust in ash bucket 1
Controlling level, it is ensured that material position level in ash bucket 1, thus stable lower ash flow and being easy to knows the material position in ash bucket 1 in real time
Situation.
More specifically, also can arrange control system 9 in the present invention, described control system 9 is believed with ejector pump 4 and boiler 2 respectively
Number connection.The effect of control system 9 is the flow of the control ejector pump 4 for automatization, and then controls its injection flying dust again
Join the amount in boiler 2.Certainly, by by control system 9 and boiler 2 signal communication, its objective is for by boiler 2
Corresponding signal flow to control system 9, in order to the operational factor in control system 9 or boiler 2；And then control ejector pump 4
Operational factor.Concrete Tong Guo lower section circulation technology of the present invention is expanded on further.It addition, control system 9 also may be used
With aerator 3 signal communication, to control the blow rate required of aerator or to control its switch etc.；In like manner, when being provided with the sensing of material position
During device 10, described control system 9 also can be with material position induction apparatus 10 signal communication, to know the reserves situation of flying dust in hopper.
CFBB flying dust forced circulation technique of the present invention, the referring to the drawings flow chart shown in 5, it is to adopt
By CFBB flying dust forced circulation system of the present invention；The bed temperature in boiler 2 is obtained in real time by control system 9
T；According to the magnitude relationship of bed temperature T Yu design temperature scope T0, control system 9 control ejector pump 4 and spray the flow of flying dust
Size, so that bed temperature T is stable in T0, wherein T0 is in the range of 800～950 DEG C；Concrete control is as follows: as T ∈ T0,
The flow of ejector pump 4 does not adjusts；As T ＜ T0, reduce the flow of ejector pump 4；As T ＞ T0, increase ejector pump 4
Flow.
Certainly, the technique described in the invention described above, its flow-control to ejector pump 4, as shown in Figure 5, runs in system
After, whole control process itself should be continuous loop control process, until system is out of service, so could realize
Real time temperature change according to bed temperature, controls automatically to ejector pump 4, and then realizes being automatically adjusted to bed temperature.As for often
Secondary cyclic process needs to be increased or decreased the Specific amounts of ejector pump 4 flow, typically can be according to practical situation depending on, if desired for root
Nominal operation amount according to CFBB and the flying dust flow according to current ejector pump 4 etc. are relevant, generally,
The 5%-20% that flow is current ejector pump 4 flow that ejector pump 4 is every time increased or decreased can be set.Certainly, specifically to injection
The flow-control of pump 4, can be controlled or by controlling push-pull valve 6 by the aperture controlling the internal respective valves of ejector pump 4
Control Deng realization；And for the detection of flow, it is possible to realized by the pressure and other parameters in indirect detection ejector pump 4.Concrete,
Those skilled in the art can use known flow detection, regulate, the mode such as control realizes.
It addition, in above-mentioned circulation technology, the bed temperature T in boiler 2, itself all can be provided for inspection in existing equipment
Surveying the temperature sensor of bed temperature, therefore, in the present invention, the control system 9 of indication and boiler 2 signal communication, actually refer to control
System processed corresponding sensor internal with boiler 2 or corresponding parameter measurement circuit signal communication, to obtain the relevant of boiler 2
Operational factor；As obtained bed temperature T.
As for above-mentioned concrete control process, its purpose mainly control bed temperature T is in optimal de-sulfurization temperature range, to the greatest extent simultaneously
Amount ensures bed temperature T not superelevation, produces the situation of substantial amounts of nitrogen oxide NOx in reducing boiler 2 with this, so, continuous right for making
The removal effect of nitrogen oxide NOx is more preferable.
Certainly, being the preferably scope that inventor determines in actual moving process for said temperature scope T0, it more has choosing
Scope be T0 be 830～860 DEG C.
Claims (10)
1. CFBB flying dust forced circulation system, described CFBB uses furnace sorbent injection desulfurization technique；Institute
Stating blood circulation include boiler (2), electric dust-removing equipment (8) and be positioned at the ash bucket (1) of electric dust-removing equipment (8) lower section, it is special
Levying and be: also include aerator (3) and ejector pump (4), the inlet end (41) of described ejector pump (4) passes through pipeline and drum
The air outlet connection of blower fan (3), the outlet side (42) of described ejector pump (4) is connected with boiler (2) by pipeline (7),
The feed end (43) of described ejector pump (4) connects with the bottom of ash bucket (1).
2. CFBB flying dust forced circulation system as claimed in claim 1, it is characterised in that: in boiler (2)
On be provided with and allow hole (11), the outlet side (42) of described ejector pump (4) by pipeline with allow hole (11) on boiler (2)
Connection；Described make hole (11) corresponding with the emulsion zone (2) in boiler (2).
3. CFBB flying dust forced circulation system as claimed in claim 1, it is characterised in that: ejector pump (4)
The bottom of feed end (43) and ash bucket (1) connected by tremie pipe (5).
4. CFBB flying dust forced circulation system as claimed in claim 1, it is characterised in that: in ejector pump (4)
Feed end (43) place be provided with push-pull valve (6).
5. CFBB flying dust forced circulation system as claimed in claim 1, it is characterised in that: described aerator (3)
For roots blower.
6. CFBB flying dust forced circulation system as claimed in claim 1, it is characterised in that: in ash bucket (1)
The inwall of bottom is provided with material position induction apparatus (10).
7. the CFBB flying dust forced circulation system as according to any one of claim 1 to 6, it is characterised in that:
Also include control system (9), described control system (9) respectively with ejector pump (4) and boiler (2) signal communication.
8. CFBB flying dust forced circulation technique, it is characterised in that: use the recycle stream described in the claims 6
Fluidized bed boiler flying dust forced circulation system；The bed temperature T in boiler (2) is obtained in real time by control system (9)；According to bed temperature T
With the magnitude relationship of design temperature scope T0, control system (9) control the uninterrupted of ejector pump (4) injection flying dust, with
Making bed temperature T stable in T0, wherein T0 is in the range of 800～950 DEG C；Concrete control is as follows: as T ∈ T0, ejector pump
(4) flow does not adjusts；As T ＜ T0, reduce the flow of ejector pump (4)；As T ＞ T0, increase ejector pump (4)
Flow.
9. CFBB flying dust forced circulation technique as claimed in claim 8, it is characterised in that: the wherein model of T0
Enclose is 830～860 DEG C.
10. CFBB flying dust forced circulation technique as claimed in claim 8 or 9, it is characterised in that: by ejector pump
(4) flying dust sprayed is added directly in the emulsion zone (21) of boiler (2).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610597421.6A CN105972586A (en) | 2016-07-26 | 2016-07-26 | Circulating fluidized bed boiler fly ash forced circulation system and process |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610597421.6A CN105972586A (en) | 2016-07-26 | 2016-07-26 | Circulating fluidized bed boiler fly ash forced circulation system and process |
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| Publication Number | Publication Date |
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| CN105972586A true CN105972586A (en) | 2016-09-28 |
Family
ID=56950927
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| Application Number | Title | Priority Date | Filing Date |
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| CN201610597421.6A Pending CN105972586A (en) | 2016-07-26 | 2016-07-26 | Circulating fluidized bed boiler fly ash forced circulation system and process |
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Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR930005289B1 (en) * | 1984-12-20 | 1993-06-17 | 휘베스-카일 바브콕 | Desulphurization method and apparatus of exhaust gas |
| CN2137756Y (en) * | 1992-09-24 | 1993-07-07 | 清华大学 | Fluidised-bed boiler with reburning and desulfurizing functions |
| CN201059550Y (en) * | 2007-06-27 | 2008-05-14 | 巩义市泰华机械厂 | Gradually dwindling and gradually expanding pipe, ash returning pump and flyash reburning type circulating fluid bed combustion equipment |
| CN201218498Y (en) * | 2008-04-18 | 2009-04-08 | 上海美亚金桥能源有限公司 | Flying ash circulating combustion system for circulating fluidized bed boiler |
| CN103542407A (en) * | 2013-10-28 | 2014-01-29 | 凤阳海泰科能源环境管理服务有限公司 | Flying ash recirculating device and flying ash recirculating method for circulating fluidized bed boiler |
| CN205825014U (en) * | 2016-07-26 | 2016-12-21 | 四川普什醋酸纤维素有限责任公司 | CFBB flying dust forced circulation system |
-
2016
- 2016-07-26 CN CN201610597421.6A patent/CN105972586A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR930005289B1 (en) * | 1984-12-20 | 1993-06-17 | 휘베스-카일 바브콕 | Desulphurization method and apparatus of exhaust gas |
| CN2137756Y (en) * | 1992-09-24 | 1993-07-07 | 清华大学 | Fluidised-bed boiler with reburning and desulfurizing functions |
| CN201059550Y (en) * | 2007-06-27 | 2008-05-14 | 巩义市泰华机械厂 | Gradually dwindling and gradually expanding pipe, ash returning pump and flyash reburning type circulating fluid bed combustion equipment |
| CN201218498Y (en) * | 2008-04-18 | 2009-04-08 | 上海美亚金桥能源有限公司 | Flying ash circulating combustion system for circulating fluidized bed boiler |
| CN103542407A (en) * | 2013-10-28 | 2014-01-29 | 凤阳海泰科能源环境管理服务有限公司 | Flying ash recirculating device and flying ash recirculating method for circulating fluidized bed boiler |
| CN205825014U (en) * | 2016-07-26 | 2016-12-21 | 四川普什醋酸纤维素有限责任公司 | CFBB flying dust forced circulation system |
Non-Patent Citations (1)
| Title |
|---|
| 严宏强等: "《中国电气工程大典 第4卷 火力发电工程（下）》", 31 May 2009, 中国电力出版社 * |
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Application publication date: 20160928 |