CN108758600A - One kind using the accurate eastern coal 660MW opposed firing super critical boilers in Xinjiang - Google Patents
One kind using the accurate eastern coal 660MW opposed firing super critical boilers in Xinjiang Download PDFInfo
- Publication number
- CN108758600A CN108758600A CN201810671346.2A CN201810671346A CN108758600A CN 108758600 A CN108758600 A CN 108758600A CN 201810671346 A CN201810671346 A CN 201810671346A CN 108758600 A CN108758600 A CN 108758600A
- Authority
- CN
- China
- Prior art keywords
- air
- superheater
- coal
- xinjiang
- reheater
- 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.)
- Pending
Links
- 239000003245 coal Substances 0.000 title claims abstract description 21
- 238000010304 firing Methods 0.000 title claims abstract description 11
- 238000002485 combustion reaction Methods 0.000 claims abstract description 15
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 12
- 230000004913 activation Effects 0.000 claims abstract description 10
- 239000000779 smoke Substances 0.000 claims description 2
- 238000004939 coking Methods 0.000 abstract description 6
- 238000007664 blowing Methods 0.000 abstract description 3
- 230000009172 bursting Effects 0.000 abstract description 3
- 239000007789 gas Substances 0.000 description 8
- 238000010438 heat treatment Methods 0.000 description 7
- 239000000203 mixture Substances 0.000 description 4
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 description 2
- QAOWNCQODCNURD-UHFFFAOYSA-N Sulfuric acid Chemical compound OS(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 description 2
- 229910052783 alkali metal Inorganic materials 0.000 description 2
- 150000001340 alkali metals Chemical class 0.000 description 2
- 238000011109 contamination Methods 0.000 description 2
- 238000001816 cooling Methods 0.000 description 2
- 230000008021 deposition Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 239000003546 flue gas Substances 0.000 description 2
- 239000002817 coal dust Substances 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000002156 mixing Methods 0.000 description 1
- 230000005855 radiation Effects 0.000 description 1
- 238000010992 reflux Methods 0.000 description 1
- 150000003839 salts Chemical class 0.000 description 1
- 238000005245 sintering Methods 0.000 description 1
- 239000004071 soot Substances 0.000 description 1
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F22—STEAM GENERATION
- F22B—METHODS OF STEAM GENERATION; STEAM BOILERS
- F22B31/00—Modifications of boiler construction, or of tube systems, dependent on installation of combustion apparatus; Arrangements of dispositions of combustion apparatus
- F22B31/08—Installation of heat-exchange apparatus or of means in boilers for heating air supplied for combustion
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F22—STEAM GENERATION
- F22B—METHODS OF STEAM GENERATION; STEAM BOILERS
- F22B3/00—Other methods of steam generation; Steam boilers not provided for in other groups of this subclass
- F22B3/08—Other methods of steam generation; Steam boilers not provided for in other groups of this subclass at critical or supercritical pressure values
-
- 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
- F23C5/00—Disposition of burners with respect to the combustion chamber or to one another; Mounting of burners in combustion apparatus
- F23C5/08—Disposition of burners
- F23C5/28—Disposition of burners to obtain flames in opposing directions, e.g. impacting flames
-
- 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
- F23C7/00—Combustion apparatus characterised by arrangements for air supply
-
- 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
- F23C7/00—Combustion apparatus characterised by arrangements for air supply
- F23C7/002—Combustion apparatus characterised by arrangements for air supply the air being submitted to a rotary or spinning motion
Landscapes
- 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)
- Air Supply (AREA)
Abstract
One kind using the accurate eastern coal 660MW opposed firing super critical boilers in Xinjiang, it is related to a kind of boiler, to solve existing boiler when using Xinjiang quasi- east coal, coking " bridging " occurs in boiler internal and leads to boiler tube bursting blowing out, boiler is made to face the problem of great safety.The present invention includes economizer system, water screen system, superheater system, reheater system, activation system, combustion system and air and gas system, and the combustion system includes multiple main burners and multiple SOFA burners；Multiple main burners and multiple SOFA burners are oppositely arranged in the both sides of burner hearth and are fixed on water screen system respectively, and burner can form flames in opposing direction in stove chamber inner combustion；Superheater system includes roof enclosure wall superheater, low temperature superheater, split screen superheater, finishing superheater and header；Activation system is provided on air and gas system, low temperature superheater, economizer system and reheater system are arranged in the tail portion of burner hearth.The present invention is suitable for the accurate eastern burning of coal in Xinjiang.
Description
Technical field
The present invention relates to a kind of boilers, and in particular to one kind using the accurate eastern coal 660MW opposed firing super critical boilers in Xinjiang.
Background technology
Quasi- east coal belongs to the strong coking in the quasi- east area in Xinjiang, seriously stains, the high-moisture coal of heavy corrosion, in the coal
Na2The alkali metal contents such as O and CaO are high, and it is readily volatilized under the high temperature conditions to be formed by sulfuric acid complex salt, are in molten
State forms the ash deposition of sintering or caking property by that can be condensed in when heating surface on heating surface pipe.It is formed by such deposition
Object majority is happened at the convection heating surface region of about 800 DEG C or so of flue-gas temperature, corrodes so as to cause high-temperature surface alkali metal,
There is extremely strong contamination because CaO is formed by compound simultaneously, stifled ash easily occurs for low temperature heating surface in tail portion, can serious shadow
Ring heat transfer and the unit safety operation of boiler heating surface.
The boiler practical operation situation for being used by Xinjiang region Duo Tai or mixing the accurate eastern coal of burning is counted, many power plants' combustions
When with accurate eastern coal, boiler global facility occurs, coking occurs, stains, position from burner hearth to horizontal flue superheater reheater,
Back-end surfaces low-temperature reheater, low temperature superheater, economizer etc. are arrived again, and the contamination of large area causes slagging " bridging " existing
As serious, boiler tube bursting, blowing out frequently occur.
Invention content
The present invention in order to solve existing boiler when using the accurate eastern coal in Xinjiang, in boiler internal occur coking " bridging " and
Lead to boiler tube bursting blowing out, boiler is made to face the problem of great safety, and one kind is provided uses Xinjiang quasi- east coal 660MW and liquidate
Burn super critical boiler.
The present invention adopts the technical scheme that solve above-mentioned technical problem：
It include economizer system, water screen system, superheater system, reheater system, activation system, combustion system and
Air and gas system,
The combustion system includes multiple main burners and multiple SOFA burners；
Multiple main burners and multiple SOFA burners are oppositely arranged in the both sides of burner hearth and are fixed on water-cooling wall system respectively
On system, burner can form flames in opposing direction in stove chamber inner combustion；
Each main burner includes central air hose, coal-feeding tube, secondary air channel, tertiary-air pipe, Secondary Air cyclone, tertiary air
Cyclone and babinet；
Central air hose, coal-feeding tube, secondary air channel and tertiary-air pipe are set in together successively from inside to outside, it is adjacent between the two
Channel is formed, coal-feeding tube is arranged on babinet, and pulverized coal concentrator, coal-feeding tube and Secondary Air are equipped between central air hose and coal-feeding tube
Secondary Air cyclone is equipped between pipe, tertiary-air pipe is equipped with tertiary air cyclone, and the outlet of tertiary-air pipe is arranged in water-cooling wall
It is connected in system and with burner hearth.
Superheater system includes roof enclosure wall superheater, low temperature superheater, split screen superheater, finishing superheater and header；
The header is arranged in the top of burner hearth, roof enclosure wall superheater, low temperature superheater, split screen superheater and final stage mistake
Hot device is arranged in header,
Water screen system is connect with air and gas system, and activation system, low temperature superheater, economizer system are provided on air and gas system
System and reheater system are arranged in the tail portion of burner hearth.
The present invention has the advantages that compared with prior art：
One, burner of the present invention uses opposed firing mode, reduces burner region thermic load, increases after-flame height, protects
Lower furnace load has been demonstrate,proved, flue-gas temperature can have been made fully to be reduced in burner hearth, burner hearth coking tendency is made to reduce.Whole
A fairly large number of soot blower is arranged in a hearth region, radiation heating-surface and convection heating surface, ensures the coking amount of heating surface can
It controls in range, makes boiler safety stable operation.
Two, the outlet at the center for multiple main burners that the present invention is arranged is direct current wind, and First air mixes for coal dust, secondary
Wind and tertiary air are rotary wind, and the flame of generation is more stablized, and keeps the effect of opposed firing more preferable.
The turbulent burner that liquidates when three, lighting a fire supports burning, initial stage ability of catching fire strong by itself reflux.
Description of the drawings
One, Fig. 1 is the schematic diagram of the present invention；
Two, Fig. 2 is the schematic diagram of main burner 6-1.
Specific implementation mode
Specific implementation mode one：In conjunction with Fig. 1 and Fig. 2 come to illustrate present embodiment, present embodiment include economizer system
1, water screen system 2, superheater system 3, reheater system 4, activation system 5, combustion system 6 and air and gas system 7；
The combustion system 6 includes multiple main burner 6-1 and multiple SOFA burners 6-2；
Multiple main burner 6-1 and multiple SOFA burners 6-2 are oppositely arranged in the both sides of burner hearth and are fixed on water respectively
In cold wall system 2, burner can form flames in opposing direction in stove chamber inner combustion；
Each main burner 6-1 includes central air hose 6-1-1, coal-feeding tube 6-1-2, secondary air channel 6-1-3, tertiary-air pipe 6-
1-4, Secondary Air cyclone 6-1-5, tertiary air cyclone 6-1-6 and babinet；
Central air hose 6-1-1, coal-feeding tube 6-1-2, secondary air channel 6-1-3 and tertiary-air pipe 6-1-4 cover successively from inside to outside
It is fitted together, adjacent to form channel between the two, coal-feeding tube 6-1-2 is arranged on babinet, central air hose 6-1-1 and coal-feeding tube 6-
It is equipped with pulverized coal concentrator 6-1-7 between 1-2, Secondary Air cyclone 6-1- is equipped between coal-feeding tube 6-1-2 and secondary air channel 6-1-3
The outlet of 5, tertiary-air pipe 6-1-4 equipped with tertiary air cyclone 6-1-6, tertiary-air pipe 6-1-4 is arranged on water screen system 2
And it is connected to burner hearth.
Superheater system 3 includes roof enclosure wall superheater 3-1, low temperature superheater 3-2, split screen superheater 3-3, final stage overheat
Device 3-4 and header 3-5；
The header 3-5 is arranged in the top of burner hearth, roof enclosure wall superheater 3-1, low temperature superheater 3-2, split screen overheat
Device 3-3 and finishing superheater 3-4 are arranged on header 3-5,
Water screen system 2 is connect with air and gas system 7, is provided with activation system 5 on air and gas system 7, low temperature superheater 3-2,
Economizer system 1 and reheater system 4 are arranged in the tail portion of burner hearth.
Specific implementation mode two：Illustrate present embodiment in conjunction with Fig. 1, the pipe of economizer system 1 described in present embodiment
Road is the light pipe or scale pipe of in-line arrangement.
Other compositions and connection relation are same as the specific embodiment one.
Specific implementation mode three：Illustrate present embodiment in conjunction with Fig. 1, reheater system 4 includes described in present embodiment
Low-temperature reheater 4-1 and final reheater 4-2；
The low-temperature reheater 4-1 and low temperature superheater 3-2 is disposed side by side on the tail portion of burner hearth, and final reheater 4-2 is set
It sets in burner hearth adjacent to exit.
Other compositions and connection relation are identical with embodiment two.
Specific implementation mode four：Illustrate present embodiment in conjunction with Fig. 1, air and gas system 7 described in present embodiment includes sky
Air preheater 7-1, air duct 7-2 and flue 7-3；
It is provided between air duct 7-2 and flue 7-1 in air preheater 7-1, air duct 7-2 and the combustion system 6
Babinet is connected to, and flue 7-3 is arranged in the tail portion of burner hearth.
Other compositions and connection relation are the same as the specific implementation mode 3.
Specific implementation mode five：Illustrate present embodiment in conjunction with Fig. 1, activation system 5 described in present embodiment includes big
Gas flash vessel 5-1 and drain tank 5-2；
Air flash vessel 5-1 is arranged at the smoke outlet of flue, passes through pipe between drain tank 5-2 and air flash vessel 5-1
Road connects.
Other compositions and connection relation are identical as specific implementation mode four.
Claims (5)
1. one kind using the accurate eastern coal 660MW opposed firing super critical boilers in Xinjiang, including economizer system (1), water screen system
(2), superheater system (3), reheater system (4), activation system (5), combustion system (6) and air and gas system (7), feature exists
In：The combustion system (6) includes multiple main burners (6-1) and multiple SOFA burners (6-2)；
Multiple main burners (6-1) and multiple SOFA burners (6-2) are oppositely arranged in the both sides of burner hearth and are fixed on water respectively
In cold wall system (2), burner can form flames in opposing direction in stove chamber inner combustion；
Each main burner (6-1) includes central air hose (6-1-1), coal-feeding tube (6-1-2), secondary air channel (6-1-3), tertiary air
Manage (6-1-4), Secondary Air cyclone (6-1-5), tertiary air cyclone (6-1-6) and babinet；
Central air hose (6-1-1), coal-feeding tube (6-1-2), secondary air channel (6-1-3) and tertiary-air pipe (6-1-4) from inside to outside according to
Secondary to be set in together, adjacent to form channel between the two, coal-feeding tube (6-1-2) is arranged on babinet, central air hose (6-1-1) and
It is equipped with pulverized coal concentrator (6-1-7) between coal-feeding tube (6-1-2), is equipped between coal-feeding tube (6-1-2) and secondary air channel (6-1-3)
Secondary Air cyclone (6-1-5), tertiary-air pipe (6-1-4) are equipped with tertiary air cyclone (6-1-6), tertiary-air pipe (6-1-4)
Outlet be arranged on water screen system (2) and with burner hearth and be connected to.
Superheater system (3) includes roof enclosure wall superheater (3-1), low temperature superheater (3-2), split screen superheater (3-3), final stage
Superheater (3-4) and header (3-5)；
The header (3-5) is arranged in the top of burner hearth, roof enclosure wall superheater (3-1), low temperature superheater (3-2), split screen mistake
Hot device (3-3) and finishing superheater (3-4) are arranged in header (3-5),
Water screen system (2) is connect with air and gas system (7), and activation system (5), low temperature superheater are provided on air and gas system (7)
(3-2), economizer system (1) and reheater system (4) are arranged in the tail portion of burner hearth.
2. one kind according to claim 1 uses the accurate eastern coal 660MW opposed firing super critical boilers in Xinjiang, feature exists
In：The pipeline of the economizer system (1) is the light pipe or scale pipe of in-line arrangement.
3. one kind according to claim 2 uses the accurate eastern coal 660MW opposed firing super critical boilers in Xinjiang, feature exists
In：The reheater system (4) includes low-temperature reheater (4-1) and final reheater (4-2)；
Low-temperature reheater (4-1) is disposed side by side on the tail portion of burner hearth, final reheater (4-2) with the low temperature superheater (3-2)
It is arranged in burner hearth adjacent to exit.
4. one kind according to claim 3 uses the accurate eastern coal 660MW opposed firing super critical boilers in Xinjiang, feature exists
In：The air and gas system (7) includes air preheater (7-1), air duct (7-2) and flue (7-3)；
Air preheater (7-1), air duct (7-2) and the combustion system (6) are provided between air duct (7-2) and flue 7-1
On babinet connection, flue (7-3) is arranged in the tail portion of burner hearth.
5. one kind according to claim 4 uses the accurate eastern coal 660MW opposed firing super critical boilers in Xinjiang, feature exists
In：The activation system (5) includes air flash vessel (5-1) and drain tank (5-2)；
Air flash vessel (5-1) is arranged at the smoke outlet of flue, passes through between drain tank (5-2) and air flash vessel (5-1)
Pipeline connects.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810671346.2A CN108758600A (en) | 2018-06-26 | 2018-06-26 | One kind using the accurate eastern coal 660MW opposed firing super critical boilers in Xinjiang |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810671346.2A CN108758600A (en) | 2018-06-26 | 2018-06-26 | One kind using the accurate eastern coal 660MW opposed firing super critical boilers in Xinjiang |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN108758600A true CN108758600A (en) | 2018-11-06 |
Family
ID=63977473
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810671346.2A Pending CN108758600A (en) | 2018-06-26 | 2018-06-26 | One kind using the accurate eastern coal 660MW opposed firing super critical boilers in Xinjiang |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108758600A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111853738A (en) * | 2020-07-31 | 2020-10-30 | 哈尔滨锅炉厂有限责任公司 | 250MW supercritical tower type fan and pi-shaped fan mill lignite boiler |
| CN112212323A (en) * | 2020-04-28 | 2021-01-12 | 哈尔滨锅炉厂有限责任公司 | 50 MW-grade high-pressure opposed firing pi-shaped pulverized coal boiler |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN202008138U (en) * | 2010-11-18 | 2011-10-12 | 哈尔滨锅炉厂有限责任公司 | Lean coal rotational-flow combustor |
| CN103486563A (en) * | 2013-09-10 | 2014-01-01 | 章礼道 | Supercritical once-through boiler capable of firing eastern Junggar coal |
| CN104061565A (en) * | 2014-06-30 | 2014-09-24 | 章礼道 | Zhundong coal-burning ultra-supercritical power station boiler |
| CN206001428U (en) * | 2016-08-30 | 2017-03-08 | 哈尔滨锅炉厂有限责任公司 | Use the quasi- east coal 300MW level super critical boiler in Xinjiang |
-
2018
- 2018-06-26 CN CN201810671346.2A patent/CN108758600A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN202008138U (en) * | 2010-11-18 | 2011-10-12 | 哈尔滨锅炉厂有限责任公司 | Lean coal rotational-flow combustor |
| CN103486563A (en) * | 2013-09-10 | 2014-01-01 | 章礼道 | Supercritical once-through boiler capable of firing eastern Junggar coal |
| CN104061565A (en) * | 2014-06-30 | 2014-09-24 | 章礼道 | Zhundong coal-burning ultra-supercritical power station boiler |
| CN206001428U (en) * | 2016-08-30 | 2017-03-08 | 哈尔滨锅炉厂有限责任公司 | Use the quasi- east coal 300MW level super critical boiler in Xinjiang |
Non-Patent Citations (1)
| Title |
|---|
| 杨忠灿;刘家利;何红光;: "新疆准东煤特性研究及其锅炉选型" * |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112212323A (en) * | 2020-04-28 | 2021-01-12 | 哈尔滨锅炉厂有限责任公司 | 50 MW-grade high-pressure opposed firing pi-shaped pulverized coal boiler |
| CN112212323B (en) * | 2020-04-28 | 2023-04-14 | 哈尔滨锅炉厂有限责任公司 | 50 MW-grade high-pressure opposed firing pi-shaped pulverized coal boiler |
| CN111853738A (en) * | 2020-07-31 | 2020-10-30 | 哈尔滨锅炉厂有限责任公司 | 250MW supercritical tower type fan and pi-shaped fan mill lignite boiler |
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| SE01 | Entry into force of request for substantive examination | ||
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| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20181106 |
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