CN108278593A - A kind of operation method of boiler - Google Patents
A kind of operation method of boiler Download PDFInfo
- Publication number
- CN108278593A CN108278593A CN201710011131.3A CN201710011131A CN108278593A CN 108278593 A CN108278593 A CN 108278593A CN 201710011131 A CN201710011131 A CN 201710011131A CN 108278593 A CN108278593 A CN 108278593A
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- China
- Prior art keywords
- boiler
- fire grate
- pressure
- rotating speed
- operation method
- 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
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23B—METHODS OR APPARATUS FOR COMBUSTION USING ONLY SOLID FUEL
- F23B30/00—Combustion apparatus with driven means for agitating the burning fuel; Combustion apparatus with driven means for advancing the burning fuel through the combustion chamber
- F23B30/02—Combustion apparatus with driven means for agitating the burning fuel; Combustion apparatus with driven means for advancing the burning fuel through the combustion chamber with movable, e.g. vibratable, fuel-supporting surfaces; with fuel-supporting surfaces that have movable parts
- F23B30/06—Combustion apparatus with driven means for agitating the burning fuel; Combustion apparatus with driven means for advancing the burning fuel through the combustion chamber with movable, e.g. vibratable, fuel-supporting surfaces; with fuel-supporting surfaces that have movable parts with fuel supporting surfaces that are specially adapted for advancing fuel through the combustion zone
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23N—REGULATING OR CONTROLLING COMBUSTION
- F23N5/00—Systems for controlling combustion
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Control Of Steam Boilers And Waste-Gas Boilers (AREA)
Abstract
The invention discloses a kind of operation methods of boiler, including step：1) by the thickness control of burning coal layer between 90mm~120mm；2) boiler pressure is detected, if boiler pressure is less than preset pressure, improves fire grate rotating speed, if boiler pressure is more than preset pressure, reduces fire grate rotating speed；In the above-mentioned methods, by controlling coal seam thickness, and fire grate rotating speed is made to be adjusted according to boiler pressure, boiler pressure hour then improves fire grate rotating speed, conveys more coal-fired, quickly to improve boiler pressure, when boiler pressure is big, then fire grate rotating speed is reduced, reduces coal-fired input quantity, to reduce boiler pressure, can ensure fire box temperature stabilization and fire coal abundant burning, to avoid fire grate local temperature excessively high, avoid fire grate fusing, fracture phenomena such as generation.
Description
Technical field
The present invention relates to boiler plant technical field, more particularly to a kind of operation method of boiler.
Background technology
Since environmental problem is increasingly severe, the environmental protection policy that country puts into effect is also further severe, is limited by discharge index, very
Current used sulphur coal is replaced with low-sulfur coal by more using coal enterprises.
City haze can be undoubtedly effectively relieved in low-sulfur coal, but fire grate design at present is according to sulphur coal (calorific value is relatively low)
Design, centainly and on fire grate the thickness of burning coal layer is also to be formulated according to sulphur coal to fire grate rotating speed, causes replacing low-sulfur
After coal, fire coal is difficult to fully burn, and fire box temperature is difficult to control, and is easy to cause existing fire grate local overheating, this is in high temperature
Lower operation gradually deformation, metallographic structure, which slowly changes, there is phenomena such as fusing, fracture, and boiler is caused to be unable to operate normally.
Therefore, how a kind of operation method of boiler is provided, can ensure that fire grate is heated evenly, avoids fusing, break
The generation for phenomena such as splitting becomes those skilled in the art's important technological problems urgently to be resolved hurrily.
Invention content
In view of this, the present invention provides a kind of operation method of boiler, it can ensure that fire grate is heated equal to reach
It is even, avoid fusing, fracture phenomena such as generation purpose.
To achieve the above object, the present invention provides the following technical solutions：
A kind of operation method of boiler, including step：
1) by the thickness control of burning coal layer between 90mm~120mm；
2) boiler pressure is detected, if boiler pressure is less than preset pressure, improves fire grate rotating speed, if boiler pressure is more than in advance
If pressure, then fire grate rotating speed is reduced.
Preferably, the thickness of the burning coal layer is 110mm.
Preferably, the value of the preset pressure is 1.05MPa.
Preferably, in the step 2), when boiler pressure is less than preset pressure, then while improving fire grate rotating speed,
Improve the rotating speed of boiler induced-draft fan and boiler blower；When boiler pressure is more than preset pressure, then fire grate rotating speed is reduced
Meanwhile reducing the rotating speed of the boiler induced-draft fan and the boiler blower.
Preferably, the boiler blower is entered the wind by five air doors along the distribution of fire grate direction of travel, and five air doors
First on fire grate direction of travel is normally off, and intermediate three are full-gear, the last one is half-open position.
Preferably, the fire grate includes frame and the fire grate segment that is set on the frame, and the fire grate segment includes holding
Load portion and auxiliary section are provided on the supporting part for the mating surface and use with the cooperation of the auxiliary section of adjacent fire grate segment
In the loading end that carrying is coal-fired, the angle between the loading end and the mating surface is between 20 °~45 °, the mating surface
On be additionally provided with several spaced apart cushion block boss.
Preferably, the thickness of the cushion block boss is between 2mm~5mm.
It can be seen from the above technical proposal that the operation method of boiler provided by the invention, including step：1) will burn coal
The thickness control of layer is between 90mm~120mm；2) boiler pressure is detected, if boiler pressure is less than preset pressure, improves stove
Rotating speed is arranged, if boiler pressure is more than preset pressure, reduces fire grate rotating speed；In the above-mentioned methods, by controlling coal seam thickness, and
And fire grate rotating speed is made to be adjusted according to boiler pressure, boiler pressure hour then improves fire grate rotating speed, conveys more fire coals,
Quickly to improve boiler pressure, when boiler pressure is big, then fire grate rotating speed is reduced, coal-fired input quantity is reduced, to reduce boiler pressure
Power can ensure the stabilization of fire box temperature and the abundant burning of fire coal, to avoid fire grate local temperature excessively high, avoid fire grate molten
The generation for phenomena such as changing, being broken.
Specific implementation mode
The present invention provides a kind of operation methods of boiler, can ensure that fire grate is heated evenly to reach, avoid melting
The purpose of the generation for phenomena such as changing, being broken.
The technical scheme in the embodiments of the invention will be clearly and completely described below, it is clear that described implementation
Example is only a part of the embodiment of the present invention, instead of all the embodiments.Based on the embodiments of the present invention, this field is common
The every other embodiment that technical staff is obtained without making creative work belongs to the model that the present invention protects
It encloses.
A kind of operation method of boiler provided by the invention, including step：
S1：By the thickness control of burning coal layer between 90mm~120mm；
S2：Boiler pressure is detected, if boiler pressure is less than preset pressure, fire grate rotating speed is improved, if boiler pressure is more than
Preset pressure then reduces fire grate rotating speed.
Compared with prior art, the operation method of boiler provided by the invention by controlling coal seam thickness, and makes fire grate
Rotating speed is adjusted according to boiler pressure, and boiler pressure hour then improves fire grate rotating speed, more fire coals is conveyed, quickly to carry
High boiler pressure when boiler pressure is big, then reduces fire grate rotating speed, coal-fired input quantity is reduced, to reduce boiler pressure, Neng Goubao
The stabilization of fire box temperature and the abundant burning of fire coal are demonstrate,proved, to avoid fire grate local temperature excessively high, avoids fire grate fusing, fracture etc.
The generation of phenomenon.
Above-mentioned technical proposal is advanced optimized, in embodiments of the present invention, in the case of with vapour load normal table, combustion
When the thickness for burning coal seam is 110mm, fire box temperature is most stable and coal-fired can fully burn.
In the step S2 of the embodiment of the present invention, the value of the preset pressure of boiler is 1.05MPa, i.e., when boiler pressure is less than
When 1.05MPa, then fire grate rotating speed is improved, when being more than 1.05MPa, then reduces fire grate rotating speed.
Due to the variation of coal-fired conveying capacity, oxygen demand can also change, in order to while keeping oxygen supply enough, ensure
Furnace pressure when boiler pressure is less than preset pressure, then improves the same of fire grate rotating speed in the step S2 of the embodiment of the present invention
When, improve the rotating speed of boiler induced-draft fan and boiler blower；When boiler pressure is more than preset pressure, then fire grate rotating speed is reduced
While, the rotating speed of boiler induced-draft fan and boiler blower is reduced, the cooperation of boiler blower and boiler induced-draft fan, energy are passed through
It is enough to ensure furnace pressure while ensureing oxygen-supplying amount, to further keep the stabilization of fire box temperature, fire coal is enable to fill
Divided combustion.
Above-mentioned technical proposal is advanced optimized, in embodiments of the present invention, boiler blower is advanced by five along fire grate
The air door of directional spreding is entered the wind, and first on fire grate direction of travel of five air doors is normally off, and intermediate three are complete
Open state, the last one is half-open position, can fully be burnt when fire coal runs to intermediate three air doors with fire grate, and release is most
Heat；With the progress of burning, coal amount continuously decreases, and oxygen demand simultaneously declines, in order to ensure that the temperature on fire grate everywhere is protected
Hold almost the same, set the last one air door to half-open position, oxygen-supplying amount can be reduced, to by control different air doors into
Air quantity makes fire grate keep being heated evenly everywhere.
Fire grate includes frame and the fire grate segment that is set on frame, and fire grate segment includes supporting part and auxiliary section, carrying
It is provided in portion for the mating surface with the cooperation of the auxiliary section of adjacent fire grate segment and the loading end for carrying fire coal, carrying
Angle between face and mating surface is additionally provided with several spaced apart cushion block boss between 20 °~45 ° in mating surface.
By using the fire grate of above structure, stoker surface more even uniform, and depositing due to cushion block boss can be made
It can ensure the air permeability of fire grate, keep fired coal combustion more uniform to reach, avoid the appearance of local overheating phenomenon, prolong
Long fire grate service life
The thickness of cushion block boss determines the fit clearance between adjacent fire grate segment, also determines the performance of ventilating of fire grate,
Therefore the thickness of its cushion block boss can neither be too big, can not be too small, and in embodiments of the present invention, the thickness of cushion block boss exists
Between 2mm~5mm.
Each embodiment is described by the way of progressive in this specification, the highlights of each of the examples are with other
The difference of embodiment, just to refer each other for identical similar portion between each embodiment.
The foregoing description of the disclosed embodiments enables those skilled in the art to implement or use the present invention.
Various modifications to these embodiments will be apparent to those skilled in the art, as defined herein
General Principle can be realized in other embodiments without departing from the spirit or scope of the present invention.Therefore, of the invention
It is not intended to be limited to the embodiments shown herein, and is to fit to and the principles and novel features disclosed herein phase one
The widest range caused.
Claims (7)
1. a kind of operation method of boiler, which is characterized in that including step：
1) by the thickness control of burning coal layer between 90mm~120mm；
2) boiler pressure is detected, if boiler pressure is less than preset pressure, improves fire grate rotating speed, if boiler pressure is more than default pressure
Power then reduces fire grate rotating speed.
2. the operation method of boiler according to claim 1, which is characterized in that the thickness of the burning coal layer is in 109mm
Between~111mm.
3. the operation method of boiler according to claim 1, which is characterized in that the value of the preset pressure 1.0MPa~
Between 1.1MPa.
4. the operation method of boiler according to claim 1, which is characterized in that in the step 2), work as boiler pressure
When less than preset pressure, then while improving fire grate rotating speed, the rotating speed of boiler induced-draft fan and boiler blower is improved；Work as boiler
When pressure is more than preset pressure, then while reducing fire grate rotating speed, the boiler induced-draft fan and the boiler blower are reduced
Rotating speed.
5. the operation method of boiler according to claim 4, which is characterized in that the boiler blower is by five along stove
The air door air inlet into directional spreding is ranked, and five air doors first on fire grate direction of travel are normally off, centre three
A is full-gear, the last one is half-open position.
6. the operation method of boiler according to claim 1, which is characterized in that the fire grate includes frame and is set to
Fire grate segment on the frame, the fire grate segment include supporting part and auxiliary section, be provided on the supporting part for phase
The mating surface of the auxiliary section cooperation of adjacent fire grate segment and the loading end for carrying fire coal, the loading end and the mating surface
Between angle between 20 °~45 °, several spaced apart cushion block boss are additionally provided in the mating surface.
7. the operation method of boiler according to claim 6, which is characterized in that the thickness of the cushion block boss 2mm~
Between 5mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710011131.3A CN108278593A (en) | 2017-01-06 | 2017-01-06 | A kind of operation method of boiler |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710011131.3A CN108278593A (en) | 2017-01-06 | 2017-01-06 | A kind of operation method of boiler |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN108278593A true CN108278593A (en) | 2018-07-13 |
Family
ID=62801015
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710011131.3A Pending CN108278593A (en) | 2017-01-06 | 2017-01-06 | A kind of operation method of boiler |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108278593A (en) |
Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4532872A (en) * | 1984-12-17 | 1985-08-06 | Combustion Engineering, Inc. | Char reinjection system for bark fired furnace |
| CN1125309A (en) * | 1994-12-21 | 1996-06-26 | 牛全正 | Hook-hang moving sheet chain grate for boiler |
| CN200958761Y (en) * | 2006-09-15 | 2007-10-10 | 冯景强 | Conveniently-detachable chain fire grate |
| CN201396769Y (en) * | 2009-04-20 | 2010-02-03 | 沈阳军区联勤部工程安装大队 | Coal-leakless reciprocating grate bar |
| CN201652377U (en) * | 2010-05-21 | 2010-11-24 | 吴德远 | Fire grate sheet without grooves for scale fire grate |
| CN201680381U (en) * | 2010-04-09 | 2010-12-22 | 华西能源工业股份有限公司 | Water-cooled grate with multiple wind chambers |
| CN202955715U (en) * | 2012-10-22 | 2013-05-29 | 武敬 | Combustion device special for wind power hybrid feeding of chained fire bed furnace |
| CN104791757A (en) * | 2015-05-06 | 2015-07-22 | 大连海事大学 | Coal-fired chain-grate boiler control system and control method thereof |
| CN105240841A (en) * | 2015-11-17 | 2016-01-13 | 无锡华光新动力环保科技股份有限公司 | Multi-coal adaptive low-NOx-emission chain grate furnace capable of adjusting flue gas recirculation |
| CN105465822A (en) * | 2015-12-09 | 2016-04-06 | 深圳粤通新能源环保技术有限公司 | Boiler automatic control system and method |
-
2017
- 2017-01-06 CN CN201710011131.3A patent/CN108278593A/en active Pending
Patent Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4532872A (en) * | 1984-12-17 | 1985-08-06 | Combustion Engineering, Inc. | Char reinjection system for bark fired furnace |
| CN1125309A (en) * | 1994-12-21 | 1996-06-26 | 牛全正 | Hook-hang moving sheet chain grate for boiler |
| CN200958761Y (en) * | 2006-09-15 | 2007-10-10 | 冯景强 | Conveniently-detachable chain fire grate |
| CN201396769Y (en) * | 2009-04-20 | 2010-02-03 | 沈阳军区联勤部工程安装大队 | Coal-leakless reciprocating grate bar |
| CN201680381U (en) * | 2010-04-09 | 2010-12-22 | 华西能源工业股份有限公司 | Water-cooled grate with multiple wind chambers |
| CN201652377U (en) * | 2010-05-21 | 2010-11-24 | 吴德远 | Fire grate sheet without grooves for scale fire grate |
| CN202955715U (en) * | 2012-10-22 | 2013-05-29 | 武敬 | Combustion device special for wind power hybrid feeding of chained fire bed furnace |
| CN104791757A (en) * | 2015-05-06 | 2015-07-22 | 大连海事大学 | Coal-fired chain-grate boiler control system and control method thereof |
| CN105240841A (en) * | 2015-11-17 | 2016-01-13 | 无锡华光新动力环保科技股份有限公司 | Multi-coal adaptive low-NOx-emission chain grate furnace capable of adjusting flue gas recirculation |
| CN105465822A (en) * | 2015-12-09 | 2016-04-06 | 深圳粤通新能源环保技术有限公司 | Boiler automatic control system and method |
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| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
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| RJ01 | Rejection of invention patent application after publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20180713 |