CN104390211A - Air-water combined slag cooler with crushing device - Google Patents
Air-water combined slag cooler with crushing device Download PDFInfo
- Publication number
- CN104390211A CN104390211A CN201410572641.4A CN201410572641A CN104390211A CN 104390211 A CN104390211 A CN 104390211A CN 201410572641 A CN201410572641 A CN 201410572641A CN 104390211 A CN104390211 A CN 104390211A
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- China
- Prior art keywords
- slag
- fluidized bed
- bed air
- air compartment
- crushing
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23C—METHODS OR APPARATUS FOR COMBUSTION USING FLUID FUEL OR SOLID FUEL SUSPENDED IN A CARRIER GAS OR AIR
- F23C10/00—Fluidised bed combustion apparatus
- F23C10/18—Details; Accessories
- F23C10/24—Devices for removal of material from the bed
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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
- F23C2900/00—Special features of, or arrangements for combustion apparatus using fluid fuels or solid fuels suspended in air; Combustion processes therefor
- F23C2900/03002—Combustion apparatus adapted for incorporating a fuel reforming device
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Crucibles And Fluidized-Bed Furnaces (AREA)
- Fluidized-Bed Combustion And Resonant Combustion (AREA)
Abstract
The invention discloses an air-water combined slag cooler with a crushing device. The slag cooler comprises a pot body, a crushing and screening chamber, a first fluidized bed air chamber, a second fluidized bed air chamber, a slag discharge chamber, a slag inlet, a slag outlet and a smoke gas refeeding opening, wherein the slag inlet is positioned in the middle of the upper part of the crushing and screening chamber; the crushing and screening chamber is positioned on one side of the pot body and directly over the first fluidized bed air chamber, and the widths of the crushing and screening chamber and the first fluidized bed air chamber are equal; the crushing device consists of two same slabs, and the slabs are moved on the upper surface of a screen; cooling pipes are uniformly distributed in the first fluidized bed air chamber, the second fluidized bed air chamber and the slag discharge chamber. For the slag cooler disclosed by the invention, the structure is simple, and before heat exchange of coal slag and a heat-transfer medium, the coal slag is crushed by using the crushing device, so that the coking problem caused by the condition that the fluidized bed air chamber is blocked by large particles is effectively avoided.
Description
Technical field
The present invention relates to the ash cooling device that a kind of CFBB uses, specifically a kind of air-water combined slag cooler with breaker.
Background technology
The popular fluidized bed boiler technology that circulates is the high-efficiency low-pollution clean burning branch art developed rapidly in recent ten years.This technology has obtained business application widely in fields such as station boiler, Industrial Boiler and offal treatment utilizations in the world, and develops to the large circulating fluidized bed boiler of hundreds of thousands multikilowatt scale; Domestic research in this respect, development and application are also risen gradually, among existing up to a hundred CFBBs put into operation or manufacturing.
CFBB generally uses the coal of low value, ash-rich, therefore produces a large amount of lime-ash.The temperature of lime-ash is generally at about 900 DEG C, and sulphur residual in lime-ash and nitrogen element discharge outward at stove, can produce sulfur dioxide and oxynitrides.If directly discharged, both wasted the physical thermal of lime-ash, caused environmental pollution again.Therefore, slag cooler must be equipped with to cool high-temperature ash.
China's CFBB slag cooler mainly contain fluidized bed slag cooler, rolling-cylinder type slag-cooler, spiral agitating type slag cooler.In the majority with air-water combined slag cooler again in fluidized bed slag cooler.Air-water combined slag cooler is a kind of multibed type slag cooler, and air-water combined slag cooler is a kind of multibed type slag cooler, is grow up on the basis of single table slag cooler, is in fact a little bubbling bed being furnished with the tube bank of buried tube type water-cooled and water-cooled heat exchange surface.Generally be divided into multiple locellus, cold air is transported to the air compartment of slag cooler by high pressure positive blower, and cold wind flows uniformly across air distribution plate, mixes with the slag on air distribution plate, makes lime-ash present fluidized state.Under fluidised state, cold air carries out mixing contact heat exchange with slag on the one hand, returns burner hearth after cold air is heated, and slag is cooled; On the other hand, and in slag cooler, arrange that wall-cooling surface carries out surface-type heat exchange, effectively absorb heat of slags, reduce slag temperature.
Find in reality, air-water combined slag cooler, when burning the coal of low ash, can run continuously, when the coal that the ash that burns is larger, often occurs making friends with phenomenon in slag cooler.Its reason has two, and one is that domestic coal supply crushing system does not reach designing requirement, and coal particle size is excessive, thus causes lime-ash particle diameter excessive, and phosphorus content is high; Two is fluidity differences of big particle, and because the partition wall between first class air compartment and second wind transmission room is higher, big particle cannot be crossed partition wall and enter second wind transmission room.Meanwhile, first class air compartment does not arrange thick slag floss hole, and thick grey solid impurity particle easily in the blocking of first class air compartment, makes first class air compartment fluidization conditions worsen, and then causes grey solid impurity particle to be cooled fully and to produce coking phenomenon.
Summary of the invention
The technical problem solved
High temp. coal slag is not by further fragmentation before entering the cooling of fluid bed air compartment, and bulky grain cinder, in the blocking of first fluidized bed air compartment, occurs coking phenomenon.
Technical scheme
The technical scheme of this patent is as follows:
A kind of air-water combined slag cooler with breaker, comprise: tank body, crushing and screening room, first fluidized bed air compartment, the second fluid bed air compartment, deslagging chamber, slag inlet, slag notch and flue gas returning charge mouth, is characterized in that: slag inlet is positioned at middle, top, crushing and screening room; Crushing and screening room is positioned at the side of tank body, and is positioned at the top of first fluidized bed air compartment; Breaker is made up of two pieces of identical flat boards; In first fluidized bed air compartment, the second fluid bed air compartment and deslagging chamber, be evenly equipped with cooling water pipe; First fluidized bed air compartment and the second fluid bed air compartment are separated by partition wall, and the second fluid bed air compartment and deslagging chamber are separated by partition wall.
Breaker is made up of two pieces of identical flat boards, and flat board moves back and forth at the upper surface of sieve.
Crushing and screening room is positioned at the side of tank body, and is positioned at the top of first fluidized bed air compartment, and the two is corresponding up and down, and width is equal.Beneficial effect
1. flat board moves back and forth and carries out work on sieve, can, constantly cinder attrition crushing, make tiny coal slag granules fall into first fluidized bed air compartment through sieve.
2. before entering first fluidized bed air compartment, bulky grain is broken, bulky grain effectively can be avoided to block in first fluidized bed air compartment, occur coking phenomenon.
3. crushing and screening room and first fluidized bed air compartment corresponding up and down, width is equal, can ensure that the tiny coal slag granules be sieving through through sieve all falls into first fluidized bed air compartment, and then fully be cooled.
Accompanying drawing explanation
Accompanying drawing 1 is a kind of front view of structure diagram of the air-water combined slag cooler with breaker;
Accompanying drawing 2 is left views of a kind of structure diagram of the air-water combined slag cooler with breaker;
1. dull and stereotyped 4. tank body 5. slag inlet 6. flue gas returning charge mouth 7. crushing and screening room 8. first fluidized bed air compartments 9. of cooling water pipe 2. sieve 3. lead blast cap 10. first fluidized bed air compartment and the second fluid bed air compartment partition wall 11. bellows 12. second fluid bed air compartment 13. second fluid bed air compartment and deslagging chamber's partition wall 14. slag notch 15. deslagging chamber.
Detailed description of the invention
Concrete structure and the operation principle of this device is described in detail below in conjunction with accompanying drawing.
A kind of air-water combined slag cooler with breaker, comprise: tank body 4, crushing and screening room 7, first fluidized bed air compartment 8, second fluid bed air compartment 12, deslagging chamber 15, slag inlet 5, slag notch 14 and flue gas returning charge mouth 6, is characterized in that: slag inlet 5 is positioned at middle, top, crushing and screening room 7; Crushing and screening room 7 is positioned at the side of tank body 4, and is positioned at the top of first fluidized bed air compartment 8; Breaker is made up of two pieces of identical flat boards 3; In first fluidized bed air compartment 8, second fluid bed air compartment 12 and deslagging chamber 15, be evenly equipped with cooling water pipe 1; First fluidized bed air compartment 8 and the second fluid bed air compartment 12 are separated by partition wall 10, and the second fluid bed air compartment 12 and deslagging chamber 15 are separated by partition wall 13.
Breaker is made up of two pieces of identical flat boards 3, and dull and stereotyped 3 move back and forth at the upper surface of sieve 2.Sieve 2 pairs of cinders sieve, and the first fluidized bed air compartment 8 that little particle falls into below cools, and large particle is stayed above sieve 2.Dull and stereotyped 3 move back and forth, then constantly attrition crushing cinder, and large coal slag granules is broken into little particle.
Crushing and screening room 7 is positioned at the side of tank body 4, and is positioned at the top of first fluidized bed air compartment 8, and the two is corresponding up and down, and width is equal.Can ensure that the cinder of 7 li, crushing and screening room all falls into first fluidized bed air compartment 8 and cools.
During device work, cinder falls into crushing and screening room 7 through slag inlet 5, and sieve 2 pairs of cinders sieve, and the first fluidized bed air compartment 8 that little particle directly falls into below cools, and large particle is then stayed above sieve 2.Dull and stereotyped 3 move back and forth, and to its constantly attrition crushing, thus make large coal slag granules be broken into little particle, the first fluidized bed air compartment 8 falling into below cools.First fluidized bed air compartment cloth 8 has cooling water pipe 1, cooling water and cinder carry out heat exchange, cooling-air enters air distribution plate by bellows 11, cooling-air by guiding blast cap 9 fluidized particles on air distribution plate, and promotes the partition wall 10 that particle walks around first fluidized bed air compartment and the second fluid bed air compartment and enters the second fluid bed air compartment 12.Be furnished with cooling water pipe 1 equally in second fluid bed air compartment 12, coal slag granules can be cooled further, fluidized wind, under the guiding of guiding blast cap 9, is walked around the partition wall 13 of the second fluid bed air compartment and deslagging chamber, is entered in deslagging chamber 15.Also be furnished with cooling water pipe 1 in deslagging chamber 15, do last cooling to particle, cooled particle is discharged through slag notch 14.Carry tiny coal slag granules in fluidization air after heating, unreacted coal slag granules returns burner hearth through flue gas returning charge mouth 6, reacts further.
This apparatus structure is simple, easy to manufacture, before cinder and heat transfer medium heat exchange, with breaker, cinder is broken, efficiently avoid bulky grain in fluid bed air compartment, blocks the coking problem caused.
Claims (3)
1. the air-water combined slag cooler with breaker, comprise: tank body (4), crushing and screening room (7), first fluidized bed air compartment (8), the second fluid bed air compartment (12), deslagging chamber (15), slag inlet (5), slag notch (14) and flue gas returning charge mouth (6), is characterized in that: slag inlet (5) is positioned at crushing and screening room (7) middle, top; Crushing and screening room (7) is positioned at the side of tank body (4), and is positioned at the top of first fluidized bed air compartment (8); Breaker is made up of two pieces of identical flat boards (3); In first fluidized bed air compartment (8), the second fluid bed air compartment (12) and deslagging chamber (15), be evenly equipped with cooling water pipe (1); First fluidized bed air compartment (8) and the second fluid bed air compartment (12) are separated by partition wall (10), and the second fluid bed air compartment (12) and deslagging chamber (15) are separated by partition wall (13).
2. a kind of air-water combined slag cooler with breaker according to claim 1, it is characterized in that breaker is made up of two pieces of identical flat boards (3), and flat board moves back and forth at the upper surface of sieve (2).
3. a kind of air-water combined slag cooler with breaker according to claim 1, it is characterized in that crushing and screening room (7) is positioned at the side of tank body (4), and being positioned at the top of first fluidized bed air compartment (8), the two is corresponding up and down, and width is equal.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410572641.4A CN104390211B (en) | 2014-10-18 | 2014-10-18 | A kind of air-water combined slag cooler with breaker |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410572641.4A CN104390211B (en) | 2014-10-18 | 2014-10-18 | A kind of air-water combined slag cooler with breaker |
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| Publication Number | Publication Date |
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| CN104390211A true CN104390211A (en) | 2015-03-04 |
| CN104390211B CN104390211B (en) | 2017-09-26 |
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| CN201410572641.4A Active CN104390211B (en) | 2014-10-18 | 2014-10-18 | A kind of air-water combined slag cooler with breaker |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108325611A (en) * | 2018-03-30 | 2018-07-27 | 多棱新材料股份有限公司 | A kind of metal crushing plant and its production technology |
| CN110553392A (en) * | 2019-09-30 | 2019-12-10 | 阳信县利民生物质能技术有限公司 | Energy-saving biomass boiler |
| CN114543553A (en) * | 2022-03-24 | 2022-05-27 | 重庆科技学院 | Intermittent circulating fluidized bed boiler bottom slag waste heat recovery coupling CO2Fixing device |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2549331Y (en) * | 2002-04-26 | 2003-05-07 | 刘月明 | Fluid bed water and air cinder cooling device |
| CN1587806A (en) * | 2004-07-02 | 2005-03-02 | 清华大学 | Wind and water combined fluidized bed slag cooler |
| CN1920380A (en) * | 2005-08-23 | 2007-02-28 | 东北大学 | Blast-furnace cement sensible heat recovery system and its production process |
| CN200979154Y (en) * | 2006-09-01 | 2007-11-21 | 重庆大学 | Mixing flow type fluid-bed cold drag device |
| CN201228964Y (en) * | 2008-06-19 | 2009-04-29 | 江阴市宏能科技有限公司 | Sorting machine for removing cool slag |
-
2014
- 2014-10-18 CN CN201410572641.4A patent/CN104390211B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2549331Y (en) * | 2002-04-26 | 2003-05-07 | 刘月明 | Fluid bed water and air cinder cooling device |
| CN1587806A (en) * | 2004-07-02 | 2005-03-02 | 清华大学 | Wind and water combined fluidized bed slag cooler |
| CN1920380A (en) * | 2005-08-23 | 2007-02-28 | 东北大学 | Blast-furnace cement sensible heat recovery system and its production process |
| CN200979154Y (en) * | 2006-09-01 | 2007-11-21 | 重庆大学 | Mixing flow type fluid-bed cold drag device |
| CN201228964Y (en) * | 2008-06-19 | 2009-04-29 | 江阴市宏能科技有限公司 | Sorting machine for removing cool slag |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108325611A (en) * | 2018-03-30 | 2018-07-27 | 多棱新材料股份有限公司 | A kind of metal crushing plant and its production technology |
| CN110553392A (en) * | 2019-09-30 | 2019-12-10 | 阳信县利民生物质能技术有限公司 | Energy-saving biomass boiler |
| CN110553392B (en) * | 2019-09-30 | 2024-02-13 | 阳信县利民新能源开发有限公司 | Energy-saving biomass boiler |
| CN114543553A (en) * | 2022-03-24 | 2022-05-27 | 重庆科技学院 | Intermittent circulating fluidized bed boiler bottom slag waste heat recovery coupling CO2Fixing device |
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| Publication number | Publication date |
|---|---|
| CN104390211B (en) | 2017-09-26 |
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