CN206094052U - Bed coal fired boiler economizer is vulcanized in high -efficient circulation - Google Patents
Bed coal fired boiler economizer is vulcanized in high -efficient circulation Download PDFInfo
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- CN206094052U CN206094052U CN201621002519.4U CN201621002519U CN206094052U CN 206094052 U CN206094052 U CN 206094052U CN 201621002519 U CN201621002519 U CN 201621002519U CN 206094052 U CN206094052 U CN 206094052U
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- economizer
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Abstract
The utility model discloses a bed coal fired boiler economizer is vulcanized in high -efficient circulation, include from last to connecting down higher level's economizer, SCR catalyst structure and the subordinate's economizer in the boiler, higher level's economizer include from last to higher level's economizer export collection case of setting gradually down, go up membrane type coal economizer pipe and higher level's economizer import collection case, subordinate's economizer includes respectively to the subordinate's economizer export collection case that sets gradually down, membrane type coal economizer pipe and subordinate's economizer import collection case down, higher level's economizer import collection case passes through pipeline no. 1 and connects the water route that subordinate's economizer exported the collection case with pipeline no. 2. The economizer is located SCR catalyst structrual height position department and still is equipped with denitration zonalinstallation inspection door and lets pipe, and denitration zonalinstallation inspection door lets and is equipped with the wall coil piece around the pipe, is equipped with a plurality of ashes that blow between package wall coil piece and denitration zonalinstallation inspection door let and manage and lets manage and a plurality of measurement station lets the pipe. The utility model discloses an economizer has reduced boiler nox and has discharged, has reduced environmental pollution, and the feature of environmental protection can be high to improve its production efficiency.
Description
Technical field
This utility model is related to the economizer technical field of 75t/h circulating fluidized bed combustion coal boilers, more particularly to efficiently
Circulating fluid-bed coal-burning boiler coal economizer.
Background technology
Technology of Circulating Fluidized Bed Boiler is the high-efficiency low-pollution cleaning burning branch art for developing rapidly in recent ten years.State
On border, this technology the field such as utilizes to have obtained widespread commercial use in station boiler, Industrial Boiler and offal treatment, and
Develop to the large circulating fluidized bed boiler of hundreds of thousands multikilowatt scale；Domestic research in this respect, development and application also by
Gradually rise, among existing up to a hundred CFBBs put into operation or manufacturing.
Boiler is generally divided into two vertical shafts in front portion and afterbody using single drum, natural circulation mode.Anterior vertical shaft is total
Structure is hung, surrounding is made up of fin panel casing.From bottom to top, air compartment, emulsion zone, a dilute-phase zone are followed successively by, back-end ductwork is certainly
High temperature superheater, low temperature superheater and economizer, air preheater are followed successively by under above.Tail vertical well adopts supporting construction, and two
It is connected by vertical cyclone separator between vertical shaft, separator bottom couples loop back device and ash cooler.Combustor and separation
Abrasionproof liner, anterior vertical shaft tube, external metal casing, tail vertical well light boiler setting, by eight are equipped with inside device
Root steel column bears boiler total weight.
Boiler adopts ignition under bed（Oil or coal gas）, fractional combustion, First air ratio account for 50-60%, and flying dust circulation is low
Multiplying power, middle temperature separate lime-ash discharge and adopt dry type, are discharged by water-cooling spiral tapping machine, ash cooler and dust collector ash hopper respectively.
Burner hearth is the key for ensureing full combustion of fuel, using turbulent bed so that fluidizing velocity is in 3.5-4.5m/s, and designs appropriate
Section of burner hearth, lay thin liner on burner hearth membrane wall pipe（High-Alumina brick）Even if, during boiler combustion different fuel, burning
Efficiency is also held in more than 98-99%.
, at 800 DEG C or so, cyclone cylinder internal diameter is less for high-temperature separator inlet flue gas temperature, and structure simplifies, and only needs one layer thin in cylinder
Thin abrasionproof liner（Nitridation silica brick）.Its service life is longer.Circulating ratio is 10-20 or so.
Circulating ash induction system is mainly by a few part compositions such as feed back pipe, loop back device, overflow pipe and ash cooler.
The regulation process of bed temperature control system is automatic.Concentrated phase bed bed temperature is remained in the range of whole load variations
A certain steady state value between 850-950 DEG C, this value are optimal desulfurization temperatures.When automatically control do not put into when, armrest is dynamic also
Maintain constant bed temperature.
Environmental protection, energy saving are the problems of every country long-run development overriding concern, and CFBB is exactly
Grown up based on this point, its high reliability, high stability, high availability, optimal environmental protection characteristic and extensive
Fuel tolerance, the particularly adaptability to inferior fuel, increasingly receive significant attention, entirely appropriate China's national situation and development
Advantage.But existing 75t/h circulating fluidized bed combustion coals boiler, boiler have after putting into operation that Nox is discharged, and are not inconsistent
Related environment protection index and requirement are closed, so need to make improvements.
Utility model content
In order to overcome the above-mentioned deficiencies of the prior art, this utility model provides efficient circulation vulcanization bed coal-burning boiler and saves coal
Device, its object is to, to reduce boiler Nox discharges, reduce environmental pollution, adapts to current environmental requirement, and realization is carried out to boiler
Install the technological transformation of SCR denitration additional, and the correspondence position in economizer increased some enclosure wall tube pieces, and rationally
Arrange some soot blowings and allow pipe and some measuring points to allow the placement location of pipe, improve the production effect of circulating fluidized bed combustion coal boiler
Rate.
The technical scheme adopted by this utility model is：Efficient circulation vulcanization bed coal-burning boiler coal economizer, including from up to
Under be connected to higher level's economizer in boiler, SCR catalyst structure and subordinate's economizer, higher level's economizer include from top to bottom according to
Higher level's economizer exit header of secondary setting, upper the Tubes of Membrane Economizer and higher level's economizer import header, subordinate's economizer difference
Including the subordinate's economizer exit header, lower the Tubes of Membrane Economizer and subordinate's economizer import header that up to set gradually down；On
Level economizer import header passes through pipeline one and pipeline two connects the water route of subordinate's economizer exit header.Economizer is located at SCR
Denitration region inspection door being additionally provided with catalyst structure height and position and allowing pipe, denitration region inspection door to allow and a left side is provided with around pipe
Enclosure wall tube piece, enclosure wall tube piece and side enclosure wall tube piece behind the right side afterwards, above-mentioned enclosure wall tube piece and denitration region inspection door allow
Some soot blowings allow pipe and some measuring points to allow pipe.
Further, the soot blowing allows the quantity of pipe to be at least three, and the measuring point allows the quantity of pipe to be at least two groups, often
One group of two measuring point for including that two measuring points allow in pipe, and each group allows pipe to be close to setting.
Further, upper the Tubes of Membrane Economizer and lower the Tubes of Membrane Economizer be set up in parallel by some row's membrane wall pipes respectively and
Into the row of the membrane wall pipe of lower the Tubes of Membrane Economizer is more than the row of the membrane wall pipe of upper the Tubes of Membrane Economizer.
Further, the row of the membrane wall pipe of upper the Tubes of Membrane Economizer is-row, the membrane wall pipe of lower the Tubes of Membrane Economizer
Row for-row, and total row of upper the Tubes of Membrane Economizer and lower the Tubes of Membrane Economizer for row.
Further, connected and fixed by some comb plate, comb joints between the membrane wall pipe of upper the Tubes of Membrane Economizer, lower membrane type is saved
Connect and fix also by some comb plate, comb joints between the membrane wall pipe of coal device pipe.
Further, upper the Tubes of Membrane Economizer and lower the Tubes of Membrane Economizer are fixed on boiler furnace by a support respectively
On.
Compared with prior art, the beneficial effects of the utility model are：Circulating fluidized bed combustion coal boiler of the present utility model
Energy-saving coal-saving device, in existing boiler economizer, increased the fore-and-aft distance between higher level's economizer and subordinate's economizer and adds
Hot face, and higher level's economizer include setting gradually from top to bottom higher level's economizer exit header, upper the Tubes of Membrane Economizer and
Higher level's economizer import header, subordinate's economizer include subordinate's economizer exit header, the lower film for up to setting gradually down respectively
Formula economizer tube and subordinate's economizer import header；Higher level's economizer import header passes through pipeline one and pipeline two connects subordinate and saves
The water route of coal device outlet header, increased the burning area of boiler, improves the efficiency of combustion of boiler, reduces nitrogen oxides
Acquisition rate, finally meets user's requirement, and improves the technical performance of the aspects such as safety, energy-saving and environmental protection, meets
Requirement of the country to environmental protection.
Additionally, circulating fluidized bed boiler energy-saving coal-saving device of the present utility model, if the correspondence position in economizer increased
Dry enclosure wall tube piece, and reasonably arrange some soot blowings and allow pipe and some measuring points to allow the placement location of pipe, improve recycle stream
Change the production efficiency of bed coal-burning boiler.
Description of the drawings
Side views of the Fig. 1 for one embodiment of efficient circulation vulcanization bed coal-burning boiler coal economizer；
Front views of the Fig. 2 for the embodiment of Fig. 1；
Structural representations of the Fig. 3 for the amplification at the I of Fig. 2；
Structural representations of the Fig. 4 for the amplification at the II of Fig. 1；
Structural representations of the Fig. 5 for the amplification at the III of Fig. 1；
Wherein：1- higher level's economizer, 11- higher level's economizer exit header, the upper the Tubes of Membrane Economizer of 12-, 13- higher level save coal
Device import header；2- SCR catalyst structures, 3- subordinates economizer, 31- subordinates economizer exit header, under 32-, membrane type saves coal
Device pipe, 33- subordinates economizer import header；4- pipelines one, 5- pipelines two, 6- membrane wall pipes, 7- comb plate, comb joints, 8- supports, 9- pots
Furnace body, 10- denitrations region inspection door allow pipe, the left back enclosure wall tube pieces of 14-, enclosure wall tube piece after 15- is right, 16- sides enclosure wall tube piece,
17- soot blowings allow pipe, and 18- measuring points allow pipe.
Specific embodiment
In order to deepen to understanding of the present utility model, with reference to the accompanying drawings and examples to this utility model furtherly
Bright, the embodiment is only used for explaining this utility model, protection domain of the present utility model is not constituted and is limited.
Efficient circulation vulcanization bed coal-burning boiler coal economizer, as shown in figure 1, including the higher level being connected in boiler from top to bottom
Economizer 1, SCR catalyst structure 2 and subordinate's economizer 3, higher level's economizer 1 include that the higher level for setting gradually from top to bottom saves coal
Device outlet header 11, upper the Tubes of Membrane Economizer 12 and higher level's economizer import header 13, under subordinate's economizer 3 includes up to respectively
Subordinate's economizer exit header 31, lower the Tubes of Membrane Economizer 32 for setting gradually and subordinate economizer import header 33；Higher level saves
Coal device import header 13 passes through the water route that pipeline 1 and pipeline 25 connect subordinate economizer exit header 31.Economizer is located at
Denitration region inspection door is additionally provided with 2 height and position of SCR catalyst structure and allows pipe 10, denitration region inspection door allows
Have left back enclosure wall tube piece 14, enclosure wall tube piece 15 and side enclosure wall tube piece 16 behind the right side, above-mentioned enclosure wall tube piece is allowed with denitration region inspection door
Some soot blowings are provided between pipe 10 allows pipe 17 and some measuring points to allow pipe 18.Soot blowing allows the quantity of pipe 17 to be at least three, and measuring point allows
The quantity of pipe 18 is at least two groups, and each group of two measuring points for including that two measuring points allow in pipe 18, and each group make pipe 18 tight
By setting.
As shown in Fig. 2 and Fig. 3, Fig. 4, upper the Tubes of Membrane Economizer 12 and lower the Tubes of Membrane Economizer 32 are respectively by some row's membrane types
Wall pipe 6 is set up in parallel and forms, and the row of the membrane wall pipe 6 of lower the Tubes of Membrane Economizer 32 is more than the membrane type of upper the Tubes of Membrane Economizer 12
The row of wall pipe 6.
In the above-described embodiments, the row of the membrane wall pipe 6 of upper the Tubes of Membrane Economizer 12 is arranged for 15-20, and lower membrane type saves coal
The row of the membrane wall pipe 6 of device pipe 32 is arranged for 40-45, and total row of upper the Tubes of Membrane Economizer 12 and lower the Tubes of Membrane Economizer 32
Number is 60 rows.As shown in Fig. 2 the preferable one embodiment of economizer province coal effect is after transformation, the upper membrane type of higher level's economizer 1
The height of economizer tube 5 be 17*45=765mm, wherein 17 be row, the height of 45 each rows.And the lower film of subordinate's economizer 3
The height of formula economizer tube 7 is 29*45+13*45=1305+585=1890mm, wherein 29 is the row of the subordinate coal saving tube before transformation
Number, 13 is the coal saving tube that higher level economizer tube is moved.
Referring to Fig. 2 and Fig. 3, connected and fixed by some comb plate, comb joints 7 between the membrane wall pipe 6 of upper the Tubes of Membrane Economizer 12,
Connect and fix also by some comb plate, comb joints 7 between the membrane wall pipe 6 of lower the Tubes of Membrane Economizer 32.
As shown in Figure 2 and Figure 4, upper the Tubes of Membrane Economizer 12 and lower the Tubes of Membrane Economizer 32 are solid by a support 8 respectively
It is scheduled on boiler furnace 9.
Circulating fluidized bed combustion coal energy-saving coal economizer for boiler of the present utility model, in existing boiler economizer, increased
Fore-and-aft distance and heating surface between level economizer and subordinate's economizer, and higher level's economizer 1 includes setting successively from top to bottom
The higher level's economizer exit header 11, upper the Tubes of Membrane Economizer 12 put and higher level's economizer import header 13,3 points of subordinate's economizer
The subordinate's economizer exit header 31, lower the Tubes of Membrane Economizer 32 that up to Bao Kuo do not set gradually down and subordinate's economizer inlet header
Case 33；Higher level's economizer import header 13 passes through the water route that pipeline 1 and pipeline 25 connect subordinate economizer exit header 31,
The burning area of boiler is increased, the efficiency of combustion of boiler is improve, the acquisition rate of nitrogen oxides is reduced, is finally met use
Family requirement, and the technical performance of the aspects such as safety, energy-saving and environmental protection is improve, meet requirement of the country to environmental protection.
After the coal economizer of circulating fluidized bed boiler use of the application, this transformation is moved to economizer tube group position
It is dynamic, though economizer transverse pitch, longitudinal pitch, heating surface area etc. are not made and are changed, bag wall length（Increase 1600mm）Change,
And the shift in position of relative bag wall（Economizer import cigarette temperature slightly changes）, therefore thermodynamic computing check is carried out to boiler parameter, in detail
It is shown in Table 1：
Parameter comparison before and after 1 coal economizer of circulating fluidized bed boiler use of the present utility model of table.
From table 1 it follows that the CFBB after transformation economizer, its higher level's economizer exit flue gas temperature
Degree, subordinate's economizer input gas temperature improve 16 degree, and the fire coal for being is fully burned in boiler, improve its combustion
Burn efficiency.
What embodiment of the present utility model was announced is preferred embodiment, but is not limited thereto, the common skill of this area
Art personnel, easily according to above-described embodiment, understand spirit of the present utility model, and make different amplifications and change, but as long as
Without departing from spirit of the present utility model, all in protection domain of the present utility model.
Claims (6)
1. efficient circulation vulcanization bed coal-burning boiler coal economizer, it is characterised in that：Including the higher level being connected in boiler from top to bottom
Economizer（1）, SCR catalyst structure（2）With subordinate's economizer（3）, higher level's economizer（1）Including setting successively from top to bottom
The higher level's economizer exit header put（11）, upper the Tubes of Membrane Economizer（12）With higher level's economizer import header（13）, province of subordinate
Coal device（3）Include the subordinate's economizer exit header for up to setting gradually down respectively（31）, lower the Tubes of Membrane Economizer（32）With under
Level economizer import header（33）；Higher level's economizer import header（13）By pipeline one（4）With pipeline two（5）Under connection
Level economizer exit header（31）Water route；Economizer is located at SCR catalyst structure（2）Denitration region is additionally provided with height and position
Inspection door allows pipe（10）, denitration region inspection door allows pipe（10）Surrounding is provided with left back enclosure wall tube piece（14）, the right side after enclosure wall tube
Piece（15）With side enclosure wall tube piece（16）, above-mentioned enclosure wall tube piece and denitration region inspection door allow pipe（10）Between be provided with some soot blowings and allow
Pipe（17）Pipe is allowed with some measuring points（18）.
2. efficient circulation vulcanization bed coal-burning boiler coal economizer according to claim 1, it is characterised in that：The soot blowing allows pipe
（17）Quantity be at least three, the measuring point allows pipe（18）Quantity be at least two groups, each group includes that two measuring points allow pipe
（18）, and two measuring points in each group allow pipe（18）It is close to setting.
3. efficient circulation vulcanization bed coal-burning boiler coal economizer according to claim 1, it is characterised in that：The upper membrane type is saved
Coal device pipe（12）With lower the Tubes of Membrane Economizer（32）Respectively by some row's membrane wall pipes（6）It is set up in parallel and forms, the lower membrane type
Economizer tube（32）Membrane wall pipe（6）Row be more than upper the Tubes of Membrane Economizer（12）Membrane wall pipe（6）Row.
4. efficient circulation vulcanization bed coal-burning boiler coal economizer according to claim 3, it is characterised in that：The upper membrane type is saved
Coal device pipe（12）Membrane wall pipe（6）Row be 15-20 row, the lower the Tubes of Membrane Economizer（32）Membrane wall pipe（6）'s
Row is arranged for 40-45, and upper the Tubes of Membrane Economizer（12）With lower the Tubes of Membrane Economizer（32）Total row be 60 rows.
5. efficient circulation vulcanization bed coal-burning boiler coal economizer according to claim 4, it is characterised in that：The upper membrane type is saved
Coal device pipe（12）Membrane wall pipe（6）Between pass through some comb plate, comb joints（7）Connect and fix, the lower the Tubes of Membrane Economizer（32）'s
Membrane wall pipe（6）Between also by some comb plate, comb joints（7）Connect and fix.
6. the efficient circulation vulcanization bed coal-burning boiler coal economizer according to claim 1 or 3 or 4 or 5 any one, its feature
It is：The upper the Tubes of Membrane Economizer（12）With lower the Tubes of Membrane Economizer（32）Pass through a support respectively（8）It is fixed on boiler
Body of heater（9）On.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621002519.4U CN206094052U (en) | 2016-08-31 | 2016-08-31 | Bed coal fired boiler economizer is vulcanized in high -efficient circulation |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621002519.4U CN206094052U (en) | 2016-08-31 | 2016-08-31 | Bed coal fired boiler economizer is vulcanized in high -efficient circulation |
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| Publication Number | Publication Date |
|---|---|
| CN206094052U true CN206094052U (en) | 2017-04-12 |
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ID=58477315
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201621002519.4U Withdrawn - After Issue CN206094052U (en) | 2016-08-31 | 2016-08-31 | Bed coal fired boiler economizer is vulcanized in high -efficient circulation |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106247324A (en) * | 2016-08-31 | 2016-12-21 | 江苏汇能锅炉有限公司 | Efficient circulation vulcanization bed coal-burning boiler coal economizer |
-
2016
- 2016-08-31 CN CN201621002519.4U patent/CN206094052U/en not_active Withdrawn - After Issue
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106247324A (en) * | 2016-08-31 | 2016-12-21 | 江苏汇能锅炉有限公司 | Efficient circulation vulcanization bed coal-burning boiler coal economizer |
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| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20170412 Effective date of abandoning: 20180706 |