CN109185869A - A kind of layered combustion chamber fluidization boiler - Google Patents
A kind of layered combustion chamber fluidization boiler Download PDFInfo
- Publication number
- CN109185869A CN109185869A CN201811030545.1A CN201811030545A CN109185869A CN 109185869 A CN109185869 A CN 109185869A CN 201811030545 A CN201811030545 A CN 201811030545A CN 109185869 A CN109185869 A CN 109185869A
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- China
- Prior art keywords
- chamber
- ash
- combustion chamber
- ash discharge
- grey cylinder
- Prior art date
- 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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- 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
- F23C10/12—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 exclusively within the combustion zone
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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
- F23C9/00—Combustion apparatus characterised by arrangements for returning combustion products or flue gases to the combustion chamber
- F23C9/06—Combustion apparatus characterised by arrangements for returning combustion products or flue gases to the combustion chamber for completing combustion
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23L—SUPPLYING AIR OR NON-COMBUSTIBLE LIQUIDS OR GASES TO COMBUSTION APPARATUS IN GENERAL ; VALVES OR DAMPERS SPECIALLY ADAPTED FOR CONTROLLING AIR SUPPLY OR DRAUGHT IN COMBUSTION APPARATUS; INDUCING DRAUGHT IN COMBUSTION APPARATUS; TOPS FOR CHIMNEYS OR VENTILATING SHAFTS; TERMINALS FOR FLUES
- F23L15/00—Heating of air supplied for combustion
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E20/00—Combustion technologies with mitigation potential
- Y02E20/34—Indirect CO2mitigation, i.e. by acting on non CO2directly related matters of the process, e.g. pre-heating or heat recovery
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Solid-Fuel Combustion (AREA)
- Fluidized-Bed Combustion And Resonant Combustion (AREA)
Abstract
The present invention relates to a kind of layered combustion chamber fluidization boiler, including furnace body, furnace body is respectively ash discharge chamber and combustion chamber；Combustion chamber is divided into pilot chamber, low temperature combustor and crosses hot chamber, the side wall of pilot chamber shown in it is equipped with feed inlet, coal dust primary filter is equipped in the bottom of pilot chamber to be used to connect with ash discharge chamber, grey cylinder is equipped with back at the middle part of combustion chamber, the bottom for wherein returning grey cylinder passes through coal dust primary filter and is connected to ash discharge chamber, the bottom that hot chamber was connected at the top of grey cylinder is gone back to, wherein being equipped with circulation ash discharging hole at the top for crossing hot chamber；Array is equipped with cooling tube in low-temperature burning chamber interior walls and the outside wall surface of time grey cylinder, folds array equipped with superheater tube crossing hot chamber internal layer, passes through drum between cooling tube and superheater tube and connect；Ash discharge chamber is equipped with coal ash and separates strainer, sundries separate mesh, wherein being connected with circulation blast pipe in the bottom of ash discharge chamber, ash releasing tube is fixed in the middle part of sundries separate mesh, the opening of ash releasing tube separates strainer towards coal ash.
Description
Technical field
The present invention relates to a kind of energy-saving environmental protection boilers, belong to a kind of layered combustion chamber fluidization boiler.
Background technique
Requirement with the country to environmental protection is higher and higher, also higher and higher for the thermal transition efficiency requirements of boiler, now
Mainly those the large-scale fluidization boilers with tail portion overheat pipeline required enough, such fluidization steam coal consumption can be bought
Greatly, manufacturing cost is also higher, is only suitable for the use of the fields such as large power plant, large chemical plant, for some small business, large size stream
State boiler cost is excessively high, and traditional horizontal coal cinder boiler hot transformation efficiency is unable to satisfy demand, therefore there is an urgent need to one
Kind high combustion efficiency, boiler small in size, to meet the needs of some small business' upgradings.
Summary of the invention
The technical problem to be solved by the present invention is the technology that fluidization boiler manufacture cost valence is high in the prior art is overcome to ask
Topic, provides a kind of layered combustion chamber fluidization boiler of loop structure.
The technical solution adopted by the present invention to solve the technical problems is:
A kind of layered combustion chamber fluidization boiler, including furnace body, furnace body are respectively ash discharge chamber and combustion chamber from top to bottom；The combustion
Burn room and be divided into and is divided into pilot chamber, low temperature combustor from bottom to top and crosses hot chamber, shown in the side wall of pilot chamber be provided with
Feed inlet is provided with a coal dust primary filter for connecting with ash discharge chamber, at the middle part of the combustion chamber in the bottom of pilot chamber
It is provided with one and returns grey cylinder, be connected to wherein the bottom for returning grey cylinder passes through coal dust primary filter with ash discharge chamber, return the top connection of grey cylinder
In the bottom for crossing hot chamber, wherein being provided with circulation ash discharging hole crossing at the top of hot chamber；In the low-temperature burning room
Array is provided with cooling tube in the outside wall surface of wall and time grey cylinder, if being provided with dry coil pipe in the folded array of hot chamber internal layer of crossing
The superheater tube of structure is connected between cooling tube and superheater tube by drum；The ash discharge chamber is disposed with coal ash from top to bottom
Strainer, sundries separate mesh are separated, wherein being connected with a circulation blast pipe in the bottom of the ash discharge chamber, is separated in the sundries
An ash releasing tube is fixed in the middle part of net, the opening of ash releasing tube separates strainer towards coal ash；It recycles ash discharging hole and passes through a circulation
Blower is connected on circulation blast pipe, the driving direction of circulating fan towards circulation blast pipe, the bottom of the ash discharge chamber also
It is connected with an impurity-discharging pipe vertically.
As a further improvement of the present invention, the cooling tube for being located at back grey drum outer wall is helically arranged from bottom to top.
As a further improvement of the present invention, positioned at the cooling tube and time thermally conductive connection of grey cylinder inner wall for going back to grey drum outer wall face.
As a further improvement of the present invention, it is semicircular concave inward structure, institute that the low-temperature burning chamber interior walls, which are section,
State cooling tube helically the arranging from bottom to top along low temperature combustor of low-temperature burning chamber interior walls.
As a further improvement of the present invention, described time grey cylinder is tapered configuration, and described time grey cylinder direction crosses hot chamber
One end be flaring structure, return grey cylinder towards one end of ash discharge chamber be throat structure.
As a further improvement of the present invention, wherein the bottom of the ash discharge chamber is tapered configuration.
As a further improvement of the present invention, the top for crossing hot chamber is tapered configuration.
As a further improvement of the present invention, the impurity-discharging pipe is connected to the bottom of ash discharge chamber, the circulation air inlet vertically
Pipe is connected on the side wall of impurity-discharging pipe.
As a further improvement of the present invention, it is arranged on ash discharge chamber's wall surface between coal dust primary filter and coal ash separation strainer
There is cleaning door.
The beneficial effects of the present invention are:
1, the present invention carries out traditional fluidization combined-circulation once-through boiler by one miniature, using circulating fan as driving force, leads to
Cross one and return the reciprocation cycle burning that grey cylinder realizes flyash and uncombusted coal dust, furthermore return grey cylinder can also realize flyash and
The secondary use of uncombusted coal dust heat, and the flyash of high heat and uncombusted coal dust can also realize to bottom ash discharge chamber into
The preheating of air entered, realize the preheating of coal dust using lesser boiler volume, ignite and overheat burning and circulating-heating,
Solve the problems, such as that conventional boiler ratio of combustion is lower.
2, the cooling tube of screw arrangement is longer compared to vertical arragement construction flow path, and heating time is also longer, can obtain
The steam of higher temperature is suitble to miniature boiler heat demand high, but the lower service condition of flow demand.
3, thermally conductive connection between grey drum outer wall and cooling tube is returned, the heating that can be further improved back grey cylinder and cooling tube is imitated
Rate.
4, the low-temperature burning chamber interior walls of concave inward structure possess bigger combustion volume and bigger water-cooling wall area, can be with
Unit space is improved to the heating efficiency of cooling tube.
5, the grey cylinder that returns of tapered configuration not only can be in favor of the volume of increase low temperature combustor, so that in low-temperature burning room
Coal dust possesses bigger space of igniting, while returning the contraction that low temperature combustor headspace may be implemented at the top of grey cylinder, so that
The bottom for crossing hot chamber has bigger air-flow ingress rate, and the flame of hot chamber was allowed to possess higher rate
The superheater tube that multilayer can be penetrated guarantees the heating efficiency of superheater tube.
6, impurity-discharging pipe is vertically arranged, and the flyash of agglomeration is facilitated to be discharged from the bottom of ash discharge chamber.
Detailed description of the invention
Present invention will be further explained below with reference to the attached drawings and examples.
Fig. 1 is diagrammatic cross-section of the invention；
Fig. 2 is the structure diagram of drum.
In figure: 1, pilot chamber；2, low temperature combustor；3, hot chamber is crossed；4, ash discharge chamber；5, coal dust primary filter；6, coal ash
Separate strainer；7, sundries separate mesh；8, feed inlet；9, ash releasing tube；10, impurity-discharging pipe；11, blast pipe is recycled；12, low temperature combustor
Inner wall；13, cooling tube；14, superheater tube；15, ash discharging hole is recycled；16, grey cylinder is returned；17, cleaning door.
Specific embodiment
In conjunction with the accompanying drawings, the present invention is further explained in detail.These attached drawings are simplified schematic diagram, only with
Illustration illustrates basic structure of the invention, therefore it only shows the composition relevant to the invention.
As depicted in figs. 1 and 2, the present invention is a kind of layered combustion chamber fluidization boiler, including furnace body, and furnace body is from top to bottom
Respectively ash discharge chamber and combustion chamber；The combustion chamber is divided into is divided into pilot chamber, low temperature combustor and mistake hot chamber from bottom to top,
The side wall of pilot chamber shown in it is provided with feed inlet, and the bottom of pilot chamber is provided with a coal dust primary filter and is used for and ash discharge
Room connection crosses the top of hot chamber and the bottom of ash discharge chamber wherein being provided with circulation ash discharging hole crossing at the top of hot chamber
Portion is tapered configuration；
It is provided with one in the middle part of the combustion chamber and returns grey cylinder, wherein the bottom for returning grey cylinder passes through coal dust primary filter and ash discharge chamber
The bottom that hot chamber was connected at the top of grey cylinder is gone back in connection, and returning ash cylinder is tapered configuration, and described time grey cylinder is fired towards overheat
The one end for burning room is flaring structure, return grey cylinder towards one end of ash discharge chamber be throat structure；
Array is provided with cooling tube, the low-temperature burning chamber interior walls in the low-temperature burning chamber interior walls and the outside wall surface of time grey cylinder
Be semicircular concave inward structure for section, the cooling tube for being located at back grey drum outer wall and positioned at return the cooling tube of grey drum outer wall from
It is helically arranged on down, folds the superheater tube that array is provided with several coil arrangements, cooling tube in the hot chamber internal layer of crossing
It is connect between superheater tube by drum, the connection type of drum are as follows: drum is divided into cold water area and hydrothermal area, cold water area and hot water
It is connected between area by demarcation plate, the cold water area bottom of drum bottom is connected to the bottom of cooling tube by water pump, cooling simultaneously
It is connected at the top of pipe on the low temperature warm water water inlet in the middle part of drum, the hydrothermal area at the top of drum was connected to by water pump
The bottom of heat pipe array is connected to steam at the top of superheater tube using in equipment, after use, is connected to bubble by water inlet pipe
On hot water inlet pipe at the top of hydrothermal area；
The ash discharge chamber is disposed with coal ash separation strainer, sundries separate mesh from top to bottom, wherein at the bottom of the ash discharge chamber
Portion is connected with an impurity-discharging pipe vertically, a circulation blast pipe is connected on impurity-discharging pipe side wall, in the sundries separate mesh
Middle part is fixed with an ash releasing tube, and the opening of ash releasing tube separates strainer towards coal ash；It recycles ash discharging hole and passes through a circulating fan
It is connected on circulation blast pipe, the driving direction direction circulation blast pipe of circulating fan.
When burning, coal dust is raised into, subsequent coal dust by air blower in Indoor Combustion of igniting from feed inlet, and air is from ash discharge chamber
The circulation blast pipe of bottom is blown into, and subsequent coal dust enters full combustion in low-temperature burning room under the driving of blower, and heats
Cooling tube, so that the heated warm water zone for rising into bubble of cold water in cooling tube, the top of subsequent pulverized coal flame passes through back
Necking gap between the top of grey cylinder and the inner wall of low temperature combustor was blown into hot chamber with certain high speed, so that
Water vapour, the steam fluid-mixing crossed in the superheater tube in hot chamber are heated to critical state, at the same the oxidizing gas that generates and
Part lightweight coal ash is discharged by the circulation ash discharging hole at top, and the high-temperature oxidizing gas after discharge passes through blower after filtering
It is blown into circulation blast pipe, to indoor air and the pulverized coal preheating of igniting, and uncombusted coal dust and bulk flyash passes through
Again it drops into back in grey cylinder, so that reheating returns grey cylinder, realizes the secondary use of high temperature coal dust and flyash heat, coal dust
The position of strainer is separated under the burning of pilot chamber flame in coal ash with bulk flyash, carries out second-time burning, heat passes through
Coal dust primary filter enters in low temperature combustor, while coal dust and the bulk coal dust thermally decomposed pass through coal ash separation strainer and pass through
Ash releasing tube discharge, the coal dust for cooling agglomeration of being heated in order to prevent, which enters circulation blast pipe, leads to the blocking of coal dust separation strainer,
The coal dust of agglomeration can by numerical value be arranged impurity-discharging pipe be discharged, and can not completely burned decompose agglomeration coal ash can then pass through
Ash discharge chamber's wall surface discharge between coal dust primary filter and coal ash separation strainer is set.
Taking the above-mentioned ideal embodiment according to the present invention as inspiration, through the above description, relevant staff completely may be used
Without departing from the scope of the technological thought of the present invention', to carry out various changes and amendments.The technical model of this invention
It encloses and is not limited to the contents of the specification, it is necessary to which the technical scope thereof is determined according to the scope of the claim.
Claims (9)
1. a kind of layered combustion chamber fluidization boiler, it is characterized in that: including furnace body, furnace body is respectively ash discharge chamber and combustion from top to bottom
Burn room；The combustion chamber, which is divided into, to be from bottom to top divided into pilot chamber, low temperature combustor and crosses hot chamber, shown in pilot chamber
Side wall is provided with feed inlet, is provided with a coal dust primary filter for connecting with ash discharge chamber, in the combustion in the bottom of pilot chamber
It burns and is provided with one time grey cylinder in the middle part of room, be connected to wherein the bottom for returning grey cylinder passes through coal dust primary filter with ash discharge chamber, return grey cylinder
Top be connected to the bottom of hot chamber, wherein being provided with circulation ash discharging hole crossing at the top of hot chamber；Described low
Array is provided with cooling tube in the outside wall surface of warm Inner Wall of Combustion Chamber and time grey cylinder, folds array setting in the hot chamber internal layer of crossing
There is the superheater tube of several coil arrangements, is connected between cooling tube and superheater tube by drum；The ash discharge chamber is from top to bottom successively
It is provided with coal ash separation strainer, sundries separate mesh, wherein a circulation blast pipe is connected in the bottom of the ash discharge chamber, in institute
It states and is fixed with an ash releasing tube in the middle part of sundries separate mesh, the opening of ash releasing tube separates strainer towards coal ash；It is logical to recycle ash discharging hole
It crosses a circulating fan to be connected on circulation blast pipe, the driving direction of circulating fan is towards circulation blast pipe, in the ash discharge
The bottom of room is also connected with an impurity-discharging pipe vertically.
2. a kind of layered combustion chamber fluidization boiler as described in claim 1, it is characterized in that: the ash drum outer wall that is located at back
Cooling tube is helically arranged from bottom to top.
3. a kind of layered combustion chamber fluidization boiler as described in claim 1, it is characterized in that: being located at back the cold of grey drum outer wall face
But pipe and time thermally conductive connection of grey cylinder inner wall.
4. a kind of layered combustion chamber fluidization boiler as described in claim 1, it is characterized in that: the low-temperature burning chamber interior walls are
Section is semicircular concave inward structure, the cooling tubes of the low-temperature burning chamber interior walls along low temperature combustor from bottom to top helically
Arrangement.
5. a kind of layered combustion chamber fluidization boiler as described in claim 1, it is characterized in that: described time grey cylinder is tapered knot
Structure, described time grey cylinder are flaring structure towards the one end for crossing hot chamber, return grey cylinder towards one end of ash discharge chamber be throat structure.
6. a kind of layered combustion chamber fluidization boiler as described in claim 1, it is characterized in that: the wherein bottom of the ash discharge chamber
For tapered configuration.
7. a kind of layered combustion chamber fluidization boiler as described in claim 1, it is characterized in that: the top for crossing hot chamber
For tapered configuration.
8. a kind of layered combustion chamber fluidization boiler as described in claim 1, it is characterized in that: the impurity-discharging pipe is connected to vertically
The bottom of ash discharge chamber, the circulation blast pipe are connected on the side wall of impurity-discharging pipe.
9. a kind of layered combustion chamber fluidization boiler as described in claim 1, it is characterized in that: coal dust primary filter and coal ash separation
Cleaning door is provided on ash discharge chamber's wall surface between strainer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811030545.1A CN109185869B (en) | 2018-09-05 | 2018-09-05 | Fluidized boiler with layered combustion chamber |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811030545.1A CN109185869B (en) | 2018-09-05 | 2018-09-05 | Fluidized boiler with layered combustion chamber |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109185869A true CN109185869A (en) | 2019-01-11 |
| CN109185869B CN109185869B (en) | 2019-12-20 |
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ID=64914625
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811030545.1A Active CN109185869B (en) | 2018-09-05 | 2018-09-05 | Fluidized boiler with layered combustion chamber |
Country Status (1)
| Country | Link |
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| CN (1) | CN109185869B (en) |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1095810A (en) * | 1993-03-03 | 1994-11-30 | 株式会社荏原制作所 | Pressurized internal circulating fluidized-bed boiler |
| JPH09166303A (en) * | 1995-12-14 | 1997-06-24 | Ishikawajima Harima Heavy Ind Co Ltd | Scattered ash treatment device of pressurized fluidized bed boiler |
| CN1295661A (en) * | 1998-02-27 | 2001-05-16 | 株式会社荏原制作所 | Fluidized bed gasification furnace |
| CN1305074A (en) * | 2001-02-28 | 2001-07-25 | 清华大学 | Combustion apparatus with cross-section variable circulating fluidized bed |
| CN203628637U (en) * | 2013-10-29 | 2014-06-04 | 大连环资科技有限公司 | Thermosetting carrier circulating fluidized bed furnace taking coke wastes as fuel |
| CN108224766A (en) * | 2017-12-21 | 2018-06-29 | 陈方羽 | A kind of power economized boiler using fuel gas second-time burning heating cold air |
-
2018
- 2018-09-05 CN CN201811030545.1A patent/CN109185869B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1095810A (en) * | 1993-03-03 | 1994-11-30 | 株式会社荏原制作所 | Pressurized internal circulating fluidized-bed boiler |
| JPH09166303A (en) * | 1995-12-14 | 1997-06-24 | Ishikawajima Harima Heavy Ind Co Ltd | Scattered ash treatment device of pressurized fluidized bed boiler |
| CN1295661A (en) * | 1998-02-27 | 2001-05-16 | 株式会社荏原制作所 | Fluidized bed gasification furnace |
| CN1305074A (en) * | 2001-02-28 | 2001-07-25 | 清华大学 | Combustion apparatus with cross-section variable circulating fluidized bed |
| CN203628637U (en) * | 2013-10-29 | 2014-06-04 | 大连环资科技有限公司 | Thermosetting carrier circulating fluidized bed furnace taking coke wastes as fuel |
| CN108224766A (en) * | 2017-12-21 | 2018-06-29 | 陈方羽 | A kind of power economized boiler using fuel gas second-time burning heating cold air |
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| Publication number | Publication date |
|---|---|
| CN109185869B (en) | 2019-12-20 |
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Effective date of registration: 20191129 Address after: 331800 reclaimed Bay Industrial Park, Dongxiang County Economic Development Zone, Fuzhou, Jiangxi Applicant after: Jiangxi Huanglong grease Co., Ltd. Address before: 211100 6 Jin Ying Road, Hu Shu street, Jiangning District, Nanjing, Jiangsu Applicant before: Xu Chenhua |
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