CN204986993U - Sediment device is arranged to circulating fluidized bed boiler gradient cooling - Google Patents
Sediment device is arranged to circulating fluidized bed boiler gradient cooling Download PDFInfo
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- CN204986993U CN204986993U CN201520724095.1U CN201520724095U CN204986993U CN 204986993 U CN204986993 U CN 204986993U CN 201520724095 U CN201520724095 U CN 201520724095U CN 204986993 U CN204986993 U CN 204986993U
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Abstract
The utility model provides a sediment device is arranged to circulating fluidized bed boiler gradient cooling, including installing the parallel scum pipe of arranging of several in circulating fluidized bed boiler below, install the expansion joint on the scum pipe, the picture peg door, install the cold sediment machine of gravity pipe in the scum pipe below, air -cooled dry -type slag extractor in the cold sediment machine below export installation of gravity pipe, at least, install a speed governing lock gas batcher between cold sediment machine of several gravity pipe and air -cooled dry -type slag extractor, install the low -level (stack -gas) economizer in air -cooled dry -type slag extractor straightway top, install in air -cooled dry -type slag extractor slope section lower extreme top and pass through the dust remover that air conduit links to each other with the low -level (stack -gas) economizer, be located the exhaust pipe of dust remover top installation, install the fan on exhaust pipe. The utility model discloses sediment device is arranged to circulating fluidized bed boiler gradient cooling, gradient cooling arrange the sediment, and waste heat recovery is energy -concerving and environment -protective. But wide application in the defeated slag system interconnected system of circulating fluidized bed boiler is in the defeated slag system interconnected system of especially large -scale circulating fluidized bed boiler.
Description
Technical field
The present invention relates to a kind of CFBB classification cooling slag-draining device, the defeated slag system of CFBB can be widely used in, especially in the defeated slag system of large circulating fluidized bed boiler.
Background technology
Existing CFBB; traditional barrel slag cooler is adopted to carry lime-ash; barrel slag cooler self also exists the problem that heat exchange area is little, warm sludge cooling effect is poor, Ash water amount is little, operation stability is poor, serious wear, leakiness easily block up, maintenance is difficult; subsequent delivery machinery is by slag temperatures involved; not only to wear and tear aggravation; and often there is mechanical breakdown, shutdown of even paralysing.
Summary of the invention
A kind of classification is the object of the present invention is to provide to cool the CFBB classification cooling slag-draining device of deslagging, waste heat recovery, energy-conserving and environment-protective.
In order to achieve the above object, CFBB classification cooling slag-draining device of the present invention, comprise the scum pipe of the several parallel layout be arranged on below CFBB, be arranged on the expansion joint on scum pipe, insertion plate door, be arranged on the gravity pipe lag cooler below scum pipe, at the air-cooled dry-type slag discharging machine that gravity pipe lag cooler lower exit port is installed, a speed governing is at least installed between several gravity pipe lag cooler and air-cooled dry-type slag discharging machine and locks gas batcher, be arranged on the low-level (stack-gas) economizer above air-cooled dry-type slag discharging machine straightway, be arranged on the deduster be connected with low-level (stack-gas) economizer above air-cooled dry-type slag discharging machine tilting section lower end and by air duct, be positioned at the exhaust duct installed above deduster, be arranged on the blower fan on exhaust duct.
CFBB classification cooling slag-draining device of the present invention, described gravity pipe lag cooler, can be fixing pipe heat exchanger.
CFBB classification cooling slag-draining device of the present invention, described gravity pipe lag cooler, employing water is the fixing airtight tube type heat exchanger of cooling medium, and flow from top to bottom between the water pipe of warm sludge in housing, cooling water is numerous water pipe internal flows.
CFBB classification cooling slag-draining device of the present invention, described gravity pipe lag cooler, adopts steam generator system condensate water to be cooling medium, introduces, return high-temperature level low-pressure heater from CFBB low-temperature level low-pressure heater.
CFBB classification cooling slag-draining device of the present invention, described gravity pipe lag cooler, adopts steam generator system hot net water to be cooling medium, from the water intaking of CFBB low-temperature end, returns temperature end.
CFBB classification cooling slag-draining device of the present invention, described air-cooled dry-type slag discharging machine, comprises closure casing, is arranged on the conveyer belt of enclosure, is arranged on the cooling air circulatory system be connected on closure casing and with blower fan.
CFBB classification cooling slag-draining device of the present invention, the described cooling air circulatory system, comprises air quantity conveyance conduit, is arranged on the air quantity adjustment doors on air quantity conveyance conduit.
CFBB classification cooling slag-draining device of the present invention, described air-cooled dry-type slag discharging machine, can arrange multistage air-cooled dry-type slag discharging machine, now air-cooled dry-type slag discharging machine should be from beginning to end, forms arranged in series.
CFBB classification cooling slag-draining device of the present invention, described multistage air-cooled dry-type slag discharging machine, can share a set of low-level (stack-gas) economizer, deduster and blower fan.
CFBB classification cooling slag-draining device of the present invention, its operation principle is: the present invention adopts classification to cool deslagging mode, high temperature section adopts the cooling of gravity pipe lag cooler, and middle-temperature section adopts the cooling of air-cooled dry-type slag discharging machine, relies on speed governing lock gas batcher control system Ash water amount.Warm sludge from boiler slag discharging tube enters speed governing lock gas batcher after gravity pipe lag cooler tentatively cools, air-cooled dry-type slag discharging machine is entered after speed governing lock gas batcher dosing, again cool through air-cooled dry-type slag discharging machine and carry, finally draining into lime-ash aftertreatment systems.
CFBB classification cooling slag-draining device of the present invention, described scum pipe, the object arranging expansion joint is in order to absorption boiler swell increment.The object arranging insertion plate door controls the discharge of lime-ash and the off-line maintenance of equipment.
CFBB classification cooling slag-draining device of the present invention, described gravity pipe lag cooler, preferably fixes pipe heat exchanger, reduces system wear, improves stability simultaneously and reduces costs.Adopt condensate water or hot net water to be cooling medium, flow from top to bottom between the water pipe of warm sludge in closed shell, cooling water, in numerous water pipe internal flow, flows from bottom to top, forms countercurrent flow.Because gravity pipe lag cooler is the elementary cooling to warm sludge, outlet slag temperature is high, and cooling extent is little, so it is large to exert oneself.Cold in-water temperature is high, reclaims heat quality higher, and little on the impact of the steam turbine stability of a system, power savings advantages is higher.For bearing high pressure condensate water and increasing heat exchange area, gravity pipe lag cooler adopts pipe heat exchanger.For preventing lime-ash coking in cooling procedure, gravity pipe lag cooler self adopts totally-enclosed structure, slag inlet is connected with boiler slag removal mouth, slag notch and bottom arrange speed governing and lock gas batcher and be connected, inner without air flowing, be anaerobic heat exchange, lime-ash can not burn away, without chemical heat release, lime-ash stores for a long time also can not coking.
CFBB classification cooling slag-draining device of the present invention, described speed governing lock gas batcher, the size of feeding coal is controlled by rotor rotation speed, and the circulation up and down of air is stoped by rotor and materials inside, in subordinate capable of blocking air-cooled dry-type slag discharging machine, air enters gravity pipe lag cooler, realize dosing, avoid jam.Ash temperature after gravity pipe lag cooler is pre-cooled is reduced to 250 DEG C ~ 400 DEG C, and the wearing and tearing of speed governing lock gas batcher alleviate.
CFBB classification cooling slag-draining device of the present invention, described blower fan, be the power set of the cooling air circulatory system, air inlet is connected with deduster air outlet, and fan outlet passes into air or is connected with the cooling air circulatory system.Under blower fan power drive, environment cools wind is inhaled in air-cooled dry-type slag discharging engine housing by air quantity adjustment doors, behind air channel with the lime-ash heat exchange in conveying, enters low-level (stack-gas) economizer heat release, then enter air after deduster dedusting.In the enclosed cooling air circulatory system, for ensureing that system wind pressure regulates and air quantity regulates, an air quantity adjustment doors is at least provided with in the circulatory system, between preferably before the air inlet of air-cooled dry-type slag discharging machine and after the air outlet of blower fan, in air channel, air quantity adjustment doors is set, or at fans entrance, air quantity adjustment doors is set, or air quantity adjustment doors is set respectively in multiple outlet and entrance, thus realizes the regulable control of the cooling air circulatory system.Air quantity adjustment doors can make to form tiny structure in air-cooled dry-type slag discharging machine, ensures environmental protection and safety.For ensureing to form negative pressure and system run all right in air-cooled dry-type slag discharging engine housing, an air vent is at least set.
CFBB classification cooling slag-draining device of the present invention, described low-level (stack-gas) economizer, its entrance is connected with air-cooled dry-type slag discharging machine casing, and outlet is connected with deduster, with condensate water or hot net water for cooling medium, the hot blast after heat exchange in air-cooled dry-type slag discharging machine is cooled and heat recovery.Conventional cryogenic economizer on year-on-year basis, wind speed of the present invention is low, dust is few, can not produce cold end corrosion.
CFBB classification cooling slag-draining device of the present invention, described deduster, is positioned at low-level (stack-gas) economizer outlet, the dust separation contained by cooled hot blast, collection, and is transmitted back to system.Described deduster, can select cyclone dust collectors or sack cleaner, is positioned at low-level (stack-gas) economizer outlet, the dust separation contained by cooled hot blast, collection, and is transmitted back to end slag dreg removing system.Electric lock pneumatic batcher can being provided with bottom deduster, preventing additional air from entering cooling system for draining lime-ash simultaneously.Air after dedusting, circulation can reduce wearing and tearing and power consumption in systems in which.
CFBB classification cooling slag-draining device of the present invention, described air-cooled dry-type slag discharging machine, the air-cooled dry-type slag extractor of preferred one-level.Under limited space operating mode, when arranging as turned, can arrange multistage air-cooled dry-type slag discharging machine, now air-cooled dry-type slag discharging machine should be from beginning to end, forms arranged in series.Multistage air-cooled dry-type slag discharging machine can share a set of low-level (stack-gas) economizer, deduster and blower fan.
CFBB classification cooling slag-draining device of the present invention, when boiler ature of coal is better, the operating mode that the quantity of slag is less, gravity pipe lag cooler discharge slag temperature is lower, and the air themperature after the heat exchange of air-cooled dry-type slag discharging machine is low, and the low value of quality is low.This kind of operating mode, air-cooled dry-type slag discharging machine can not be arranged or inactive low-level (stack-gas) economizer, directly enters air after dedusting, now deduster preferred cloth bag dust collector, reaches more high-environmental requirement.
CFBB classification cooling slag-draining device of the present invention, gravity pipe lag cooler and low-level (stack-gas) economizer adopt water heat absorption, preferred condensate water, condensate water is introduced by certain one-level low-pressure heater, is turned back to the temperature high one-level of the circulatory system or high two-stage low-pressure heater or oxygen-eliminating device after heating.In heating area, adopt the recyclable more heats of hot net water, hot net water is introduced by low-temperature zone, is incorporated to high temperature section after heat exchange.Gravity pipe lag cooler slag temperature is high, recyclable high-quality heat, so even if adopt condensate water simultaneously, gravity pipe lag cooler is different with the inlet water temperature of low-level (stack-gas) economizer, should fetch water from the low-pressure heater of different stage, and at least high one-level in gravity pipe lag cooler gateway.Gravity pipe lag cooler and low-level (stack-gas) economizer are indirect heat exchange, are the direct heat transfer of air and warm sludge in air-cooled dry-type slag discharging machine body.
CFBB classification cooling slag-draining device of the present invention, is divided into high temperature, the cooling of middle temperature two region.High-temperature area cooling refers to that 850 DEG C ~ 1000 DEG C high temperature sludges are cooled to the process of warm slag in 250 DEG C ~ 400 DEG C by gravity pipe lag cooler, adopts condensate water or hot net water to realize high-quality thermal source and reclaims; Middle temperature area cooling refers to that warm slag in 250 DEG C ~ 400 DEG C is cooled to the process of less than 150 DEG C low temperature slags by air-cooled dry-type slag discharging machine.Namely 850 DEG C ~ 1000 DEG C high temperature warm sludges that boiler is discharged by gravity pipe lag cooler are cooled in 250 DEG C ~ 400 DEG C and drain into speed governing lock gas batcher after warm slag, middle temperature slag is locked gas batcher by speed governing and is quantitatively entered air-cooled dry-type slag discharging machine, through the low temperature slag of cooled less than 150 DEG C of air-cooled dry-type slag discharging machine, enter follow-up ash processing system afterwards.Therefore, classification cooling deslagging of the present invention.
CFBB classification cooling slag-draining device of the present invention, adopt low-level (stack-gas) economizer for reclaiming the heat of air, deduster is used for the dust separation in circulating air and is recycled to system, and air-cooled dry-type slag discharging machine is used for warm sludge and cooling air heat exchange.Under blower fan power drive, from the cooling-air in environment suction air-cooled dry-type slag discharging machine and the heat exchange of middle temperature slag; Then, the air after heating in low-level (stack-gas) economizer with water heat exchange; Finally, cooled air enters air after dedusting, forms open circulation.When the air themperature of discharging is higher, or when air capacity is more very much not allowed to discharge, present system can be optimized for closed cycle, cold wind after cooling and dedusting is delivered in the air-cooled dry-type slag discharging machine cooling air circulatory system by blower fan, hot blast after heat absorption enters low-level (stack-gas) economizer heat release, enter deduster dedusting again, finally enter in air-cooled dry-type slag discharging machine through blower fan again.Therefore, waste heat recovery of the present invention, energy-conserving and environment-protective.
CFBB classification cooling slag-draining device of the present invention, induction system technological process is, the warm sludge that boiler slag removal mouth is discharged, gravity pipe lag cooler is entered after insertion plate door and expansion joint, speed governing lock gas batcher is entered again after pre-cooled by gravity pipe lag cooler, enter air-cooled dry-type slag discharging machine again, enter aftertreatment systems through the cooled lime-ash of air-cooled dry-type slag discharging machine.Preferably directly enter slag storehouse, space-constrained operating mode, bucket elevator can be set and be promoted to slag storehouse or other conveyer is delivered to a distant place.
CFBB classification of the present invention cooling slag-draining device, boiler slag discharging tube can be accessed by one or more gravity pipe lag cooler, otherwise gravity pipe lag cooler can accept the high temperature sludge from the one or more scum pipe of boiler.Gravity pipe lag cooler configurable one or more speed governing lock gas batcher, meets the optimization requirement of docking and lime-ash cooling transfer passage smoothness and heat and mass between system equipment.
CFBB classification cooling slag-draining device of the present invention, the parallel speed governing lock gas batcher arranged, preferably enters the cold dry-type slag extractor of same typhoon.Multiple gravity pipe lag cooler is arranged for parallel, and multiple air-cooled dry-type slag discharging machine is that serial is arranged.The maximum quantity of air-cooled dry-type slag discharging machine serial is identical with the linear minimum number of gravity pipe lag cooler, and namely dry-type slag extractor serial number is minimum of a value; As boiler both sides respectively arrange 4 parallel slag-drip openings, should select 8 gravity pipe lag cooler and the cold dry-type slag extractor of 2 typhoons, the allocation optimum realizing system obtains high economic benefit.
CFBB classification cooling slag-draining device of the present invention, high temperature section anaerobic cools, and noncoking, cooling effectiveness is high.The wearing and tearing of gravity pipe lag cooler are low, economize on electricity.In gravity pipe lag cooler, the pulp water temperature difference is large, reclaims heat quality high.Air-cooled dry-type slag discharging machine integrates cooling and conveying, and heat-transfer surface increases, good cooling results.
In sum, CFBB classification cooling slag-draining device of the present invention, classification cooling deslagging, waste heat recovery, energy-conserving and environment-protective.
Accompanying drawing illustrates and is further described the present invention below in conjunction with accompanying drawing and embodiment.
Fig. 1 is structural representation of the present invention.
Detailed description of the invention in FIG, CFBB classification cooling slag-draining device of the present invention, comprise the scum pipe 1 of the several parallel layout be arranged on below CFBB 12, be arranged on the expansion joint 2 on scum pipe, insertion plate door 3, be arranged on the gravity pipe lag cooler 4 below scum pipe, at the air-cooled dry-type slag discharging machine 5 that gravity pipe lag cooler lower exit port is installed, a speed governing is at least installed between several gravity pipe lag cooler and air-cooled dry-type slag discharging machine and locks gas batcher 6, be arranged on the low-level (stack-gas) economizer 7 above air-cooled dry-type slag discharging machine straightway, be arranged on the deduster 8 be connected with low-level (stack-gas) economizer above air-cooled dry-type slag discharging machine tilting section lower end and by air duct, be positioned at the exhaust duct 9 installed above deduster, be arranged on the blower fan 10 on exhaust duct.
CFBB classification cooling slag-draining device of the present invention, described gravity pipe lag cooler, can be fixing pipe heat exchanger.
CFBB classification cooling slag-draining device of the present invention, described gravity pipe lag cooler, employing water is the fixing airtight tube type heat exchanger of cooling medium, and flow from top to bottom between the water pipe of warm sludge in housing, cooling water is numerous water pipe internal flows.
CFBB classification cooling slag-draining device of the present invention, described gravity pipe lag cooler, adopts steam generator system condensate water to be cooling medium, introduces, return high-temperature level low-pressure heater from CFBB low-temperature level low-pressure heater.
CFBB classification cooling slag-draining device of the present invention, described gravity pipe lag cooler, adopts steam generator system hot net water to be cooling medium, from the water intaking of CFBB low-temperature end, returns temperature end.
CFBB classification cooling slag-draining device of the present invention, described air-cooled dry-type slag discharging machine, comprises closure casing 5-1, is arranged on the conveyer belt 5-2 of enclosure, is arranged on the cooling air circulatory system 5-3 be connected on closure casing and with blower fan.
CFBB classification cooling slag-draining device of the present invention, the described cooling air circulatory system, comprises air quantity conveyance conduit 5-3-1, is arranged on the air quantity adjustment doors 5-3-2 on air quantity conveyance conduit.
CFBB classification cooling slag-draining device of the present invention, described air-cooled dry-type slag discharging machine, can arrange multistage air-cooled dry-type slag discharging machine, now air-cooled dry-type slag discharging machine should be from beginning to end, forms arranged in series.
CFBB classification cooling slag-draining device of the present invention, described multistage air-cooled dry-type slag discharging machine, can share a set of low-level (stack-gas) economizer, deduster and blower fan.
CFBB classification cooling slag-draining device of the present invention, described speed governing lock gas batcher, comprises closed shell 6-1, arranges rotor 6-2 in enclosure interior.
CFBB classification cooling slag-draining device of the present invention, described low-level (stack-gas) economizer, adopt the heat exchange of steam generator system condensate water, introduce from low-temperature level low-pressure heater, return high-temperature level low-pressure heater, and the temperature level that low-pressure heater was introduced and returned to low-level (stack-gas) economizer is introduced and returns the temperature level at least one-level of low-pressure heater respectively lower than aforesaid gravity pipe lag cooler.
CFBB classification cooling slag-draining device of the present invention, described low-level (stack-gas) economizer, when adopting steam generator system hot net water, from low-temperature end water intaking, returns temperature end.
CFBB classification cooling slag-draining device of the present invention, described deduster, can be cyclone dust collectors.
CFBB classification cooling slag-draining device of the present invention, described deduster, can be sack cleaner
CFBB classification cooling slag-draining device of the present invention, described deduster, can be provided with electric lock pneumatic batcher 11 bottom it.
In addition, in figure, lime-ash flow direction a, air-flow direction b, water flow direction c.
Claims (9)
1. a CFBB classification cooling slag-draining device, it is characterized in that, comprise the scum pipe of the several parallel layout be arranged on below CFBB, be arranged on the expansion joint on scum pipe, insertion plate door, be arranged on the gravity pipe lag cooler below scum pipe, at the air-cooled dry-type slag discharging machine that gravity pipe lag cooler lower exit port is installed, a speed governing is at least installed between several gravity pipe lag cooler and air-cooled dry-type slag discharging machine and locks gas batcher, be arranged on the low-level (stack-gas) economizer above air-cooled dry-type slag discharging machine straightway, be arranged on the deduster be connected with low-level (stack-gas) economizer above air-cooled dry-type slag discharging machine tilting section lower end and by air duct, be positioned at the exhaust duct installed above deduster, be arranged on the blower fan on exhaust duct.
2. CFBB classification cooling slag-draining device according to claim 1, it is characterized in that, described gravity pipe lag cooler, can be fixing pipe heat exchanger.
3. CFBB classification cooling slag-draining device according to claim 2, it is characterized in that, described gravity pipe lag cooler, employing water is the fixing airtight tube type heat exchanger of cooling medium, flow from top to bottom between the water pipe of warm sludge in housing, cooling water is numerous water pipe internal flows.
4. CFBB classification cooling slag-draining device according to claim 1, it is characterized in that, described gravity pipe lag cooler, adopt steam generator system condensate water to be cooling medium, introduce from CFBB low-temperature level low-pressure heater, return high-temperature level low-pressure heater.
5. CFBB classification cooling slag-draining device according to claim 1, is characterized in that, described gravity pipe lag cooler, adopts steam generator system hot net water to be cooling medium, from the water intaking of CFBB low-temperature end, return temperature end.
6. CFBB classification cooling slag-draining device according to claim 1, it is characterized in that, described air-cooled dry-type slag discharging machine, comprises closure casing, be arranged on the conveyer belt of enclosure, be arranged on the cooling air circulatory system be connected on closure casing and with blower fan.
7. CFBB classification cooling slag-draining device according to claim 6, it is characterized in that, the described cooling air circulatory system, comprises air quantity conveyance conduit, is arranged on the air quantity adjustment doors on air quantity conveyance conduit.
8. CFBB classification cooling slag-draining device according to claim 1, it is characterized in that, described air-cooled dry-type slag discharging machine, can arrange multistage air-cooled dry-type slag discharging machine, now air-cooled dry-type slag discharging machine should be from beginning to end, forms arranged in series.
9. CFBB classification cooling slag-draining device according to claim 8, it is characterized in that, described multistage air-cooled dry-type slag discharging machine, can share a set of low-level (stack-gas) economizer, deduster and blower fan.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520724095.1U CN204986993U (en) | 2015-09-18 | 2015-09-18 | Sediment device is arranged to circulating fluidized bed boiler gradient cooling |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520724095.1U CN204986993U (en) | 2015-09-18 | 2015-09-18 | Sediment device is arranged to circulating fluidized bed boiler gradient cooling |
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| Publication Number | Publication Date |
|---|---|
| CN204986993U true CN204986993U (en) | 2016-01-20 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520724095.1U Withdrawn - After Issue CN204986993U (en) | 2015-09-18 | 2015-09-18 | Sediment device is arranged to circulating fluidized bed boiler gradient cooling |
Country Status (1)
| Country | Link |
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| CN (1) | CN204986993U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105180163A (en) * | 2015-09-18 | 2015-12-23 | 青岛达能环保设备股份有限公司 | Classified cooling and slag discharging system for circulating fluidized bed boiler |
| CN110925750A (en) * | 2019-12-31 | 2020-03-27 | 李永成 | Multistage cold sediment system of boiler fluidized bed |
-
2015
- 2015-09-18 CN CN201520724095.1U patent/CN204986993U/en not_active Withdrawn - After Issue
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105180163A (en) * | 2015-09-18 | 2015-12-23 | 青岛达能环保设备股份有限公司 | Classified cooling and slag discharging system for circulating fluidized bed boiler |
| CN105180163B (en) * | 2015-09-18 | 2017-11-17 | 青岛达能环保设备股份有限公司 | CFBB classification cooling dreg removing system |
| CN110925750A (en) * | 2019-12-31 | 2020-03-27 | 李永成 | Multistage cold sediment system of boiler fluidized bed |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20160120 Effective date of abandoning: 20171117 |