CN1584397A - Dregs cooler with rotary drum for circulating fluid-bed boiler - Google Patents
Dregs cooler with rotary drum for circulating fluid-bed boiler Download PDFInfo
- Publication number
- CN1584397A CN1584397A CN 200410042796 CN200410042796A CN1584397A CN 1584397 A CN1584397 A CN 1584397A CN 200410042796 CN200410042796 CN 200410042796 CN 200410042796 A CN200410042796 A CN 200410042796A CN 1584397 A CN1584397 A CN 1584397A
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- China
- Prior art keywords
- slag
- water
- cylinder
- cooler
- slag cooler
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 24
- 239000002893 slag Substances 0.000 claims description 42
- 230000005540 biological transmission Effects 0.000 claims description 3
- 239000010802 sludge Substances 0.000 claims description 3
- 230000008676 import Effects 0.000 claims description 2
- 238000001816 cooling Methods 0.000 abstract description 13
- 238000003756 stirring Methods 0.000 abstract description 4
- 239000012528 membrane Substances 0.000 abstract description 3
- 125000004122 cyclic group Chemical group 0.000 abstract 1
- 238000012546 transfer Methods 0.000 description 7
- 239000000498 cooling water Substances 0.000 description 5
- MWUXSHHQAYIFBG-UHFFFAOYSA-N Nitric oxide Chemical compound O=[N] MWUXSHHQAYIFBG-UHFFFAOYSA-N 0.000 description 3
- 238000002485 combustion reaction Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 2
- RAHZWNYVWXNFOC-UHFFFAOYSA-N Sulphur dioxide Chemical compound O=S=O RAHZWNYVWXNFOC-UHFFFAOYSA-N 0.000 description 2
- 238000013461 design Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 238000012545 processing Methods 0.000 description 2
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 description 1
- 229910000831 Steel Inorganic materials 0.000 description 1
- NINIDFKCEFEMDL-UHFFFAOYSA-N Sulfur Chemical compound [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 description 1
- 239000005864 Sulphur Substances 0.000 description 1
- 238000005299 abrasion Methods 0.000 description 1
- 230000002411 adverse Effects 0.000 description 1
- 238000007664 blowing Methods 0.000 description 1
- 238000009835 boiling Methods 0.000 description 1
- 239000003245 coal Substances 0.000 description 1
- 230000002328 demineralizing effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000003912 environmental pollution Methods 0.000 description 1
- 239000003546 flue gas Substances 0.000 description 1
- 230000001788 irregular Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000010338 mechanical breakdown Methods 0.000 description 1
- 238000002156 mixing Methods 0.000 description 1
- 229910052757 nitrogen Inorganic materials 0.000 description 1
- 238000012856 packing Methods 0.000 description 1
- 238000005096 rolling process Methods 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 238000005728 strengthening Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
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- Waste-Gas Treatment And Other Accessory Devices For Furnaces (AREA)
Abstract
A slag-cooling drum for cyclic fluid-bed boiler is welded to have polyhedron membrane style water-cooling walls. Some blades are welded on the walls to enhance stirring ability and heat exchange, meanwhile, to increase the internal bearing ability of the heat exchanging surfaces. It has simple structure, costs low, and is easily produced and usable as low-pressure heater for water supply system of boiler.
Description
Technical field
The present invention relates to the ash cooling device that a kind of CFBB is used, belong to the combustion apparatus technical field.
Background technology
The high-temperature ash of discharging from fluidized-bed combustion boiler has been taken away a large amount of physics heat, has worsened on-the-spot service condition; Sulphur and nitrogen element residual in the lime-ash still can discharge sulfur dioxide and nitrogen oxide outside stove, cause environmental pollution; The processing of red-hot lime-ash and transportation be trouble very, is unfavorable for mechanized operation; For this reason, must cool off high-temperature ash.Slag cooler is the vitals that guarantees the fluidized-bed combustion boiler safe and highly efficient operation, and the irregular working of slag cooler is the one of the main reasons that causes being forced to blowing out and load shedding operation.
Existing circulation fluidized bed slag cooler by mode of operation, is divided into batch (-type) and continous way; Press the relative flow direction of slag cooler internal flow medium, be divided into following current, adverse current, rectangular cross flow and mixed flow mode; Be in contact with one another heat transfer by cold and hot medium, be divided into indirect type, contact, hybrid.The indirect type slag cooler, for example single tube boiling type slag cooler is simple in structure, and is easy to operate, but heat exchange efficiency is low, is prone to heat exchanging corner; Contact and hybrid slag cooler good effect of heat exchange, but lime-ash can only be cooled to wind slag equilibrium temperature, the buried pipe abrasion problem is not easy to solve, and does not generally use separately; The moving bed slag cooler adopts low wind speed, and more easily from designing consideration, structure is various for the lime-ash flow process, take reverse-flow cooling can obtain the lower ash temperature of specific heat flue-gas temperature, but the contact heat-exchanging area is little, occurs heat exchanging corner easily, and cold slag is indifferent; Hybrid slag cooler coal adaptability is strong, can reach better cooling effect, but system is too complicated, involves great expense, and the service requirement strictness needs higher operant level.
A class slag cooler comparatively commonly used at present is auger type and rolling-cylinder type slag-cooler, and lime-ash advances by water-cooled auger or cylinder rotation, and cooling water flows in the chuck of auger and cylinder.It is little that this class slag cooler lime-ash fires possibility again, can utilize the rotational speed regulation quantity of slag, thereby have advantage easy to adjust; But auger or rolling-cylinder type slag-cooler are because heat-transfer surface is little, thereby heat transfer coefficient is little, need volume bigger, and because the gap between packing auger blade and water leg is difficult to guarantee, the gap is too little, auger is stuck because of distortion during high temperature, if the gap is too big, warm sludge easily sticks on the inwall and causes the coefficient of heat transfer to reduce.In addition, blade generally adopts the water-cooling jacket structure, because the friction of lime-ash and auger wall, regular meeting causes the wear-out failure of water-cooling jacket, is prone to leakage accident and mechanical breakdown.
Summary of the invention
It is poor to mix stirring capacity at existing roller slag cooler and auger slag cooler, and heat transfer coefficient is little, and the shortcoming that water-cooling jacket is easy to wear the objective of the invention is to design a kind of easy to operate, and the life-span is permanent, the rolling-cylinder type slag-cooler that the lime-ash cooling capacity is stronger.
Another object of the present invention provides a kind of new purposes of roller slag cooler.
For achieving the above object, the present invention takes following scheme:
The roller slag cooler that a kind of CFBB is used, comprise blade-carrying water cold drum, the transmission device of power is provided for this cylinder, described cylinder two ends are respectively equipped with warm sludge import and the outlet of cold slag, it is characterized in that: described water cold drum is welded by fin panel casing, its cross section is a polygonized structure, and the blade in the cylinder directly is welded on the fin panel casing.
Roller slag cooler provided by the invention can be used as the application of feed water system of boiler mesolow heater.
The present invention compared with prior art has the following advantages and the high-lighting effect: 1) adopt film water cold wall structure, the cylinder heat-transfer surface bears the pressure height, especially can bear bigger interior pressure, has strengthened heat exchange; Improve cylinder service life, increased scuff resistance; And can be used as feed water system of boiler mesolow heater.2) cylinder adopts membrane wall to be welded into polygonized structure, can take lime-ash to higher position in rotary course, has strengthened stirring capacity.3) structure is simpler, is easy to processing and manufacturing, and cost is lower.4) can adopt the interior water of steam generator system to cool off, have higher reliability, improve the boiler hot unit efficiency.
Description of drawings
Fig. 1 is the structural representation of roller slag cooler provided by the invention.
Fig. 2 is the sectional schematic diagram of cylinder.
The specific embodiment
Following structure accompanying drawing further specifies principle of the present invention, concrete structure and preferred forms.
Slag cooler slag feed pipe 1 joins with boiler high temperature ash slag outlet, is connected to water cold drum 2 behind the slag feed pipe, and for strengthening mixing and the stirring capacity of cylinder to slag, cylinder design is a polygonized structure, preferably adopts hexagon or octagon.Lime-ash can be carried to higher place like this, strengthen heat exchange; For improving the cylinder life-span, increase scuff resistance, cylinder adopts film water cold wall structure, and lays wearing layer in edges and corners; Blade 3 in the cylinder adopts heat resisting steel, and to increase the service life, blade is not with the water-cooling jacket structure, thereby avoids the water-cooling jacket wearing and tearing leakage accident to occur, also makes structure simpler; The cylinder other end links to each other with slag notch 4.Slag cooler adopts the counter-flow water methods for cooling, and promptly water inlet pipe 5 is positioned at the oral-lateral of slagging tap of water cold drum, and outlet pipe 8 is positioned at the slag input oral-lateral, lime-ash can be cooled to lower temperature.The slag cooler water cold drum is driven by the transmission device 6 that is installed on the frame 7.
During work, red-hot lime-ash enters cold slag machine slag bucket through slag dropping tube, enters polygon water cold drum 2 from slag inlet 1, the cylinder low speed rotation, move forward under blade 3 guiding drives and by the cooling of the membrane wall of barrel, lime-ash is rolling when flowing and cooling water pipe carries out heat exchange.After lime-ash is cooled to lower temperature, discharge through slag notch 4 downwards from the other end.The cooling water reverse flow enters from water inlet pipe 5, flow through outer cylinder and blade, and in order to prevent the heat-transfer surface fouling, cooling water must adopt chemical demineralizing water or demineralized water.
Because the cooling-part of this slag cooler is a film water cold wall structure, can bear than imperial palace and press, the condensate water that cooling water can adopt steam turbine to come out is so slag cooler can be used as the low-pressure heater in the feed water system of boiler.
Claims (3)
1. roller slag cooler that CFBB is used, comprise the water cold drum (2) that has blade (3), the transmission device (6) of power is provided for this cylinder, described cylinder two ends are respectively equipped with warm sludge import (1) and cold slag outlet (4), it is characterized in that: described water cold drum (2) is welded by fin panel casing, its cross section is a polygonized structure, and the blade (3) in the cylinder directly is welded on the fin panel casing.
2. according to the described roller slag cooler of claim 1, it is characterized in that: described polygonized structure adopts hexagon or octagon.
3. roller slag cooler can be used as the application of feed water system of boiler mesolow heater according to claim 1.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200410042796 CN1584397A (en) | 2004-05-28 | 2004-05-28 | Dregs cooler with rotary drum for circulating fluid-bed boiler |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200410042796 CN1584397A (en) | 2004-05-28 | 2004-05-28 | Dregs cooler with rotary drum for circulating fluid-bed boiler |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN1584397A true CN1584397A (en) | 2005-02-23 |
Family
ID=34601681
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200410042796 Pending CN1584397A (en) | 2004-05-28 | 2004-05-28 | Dregs cooler with rotary drum for circulating fluid-bed boiler |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1584397A (en) |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101481628B (en) * | 2008-11-17 | 2012-08-01 | 上海锅炉厂有限公司 | Method for assembling gasifying furnace internal component coal gas conduit segment 45-degree water-cooled wall barrel |
| CN103388822A (en) * | 2012-05-08 | 2013-11-13 | 阿尔斯通技术有限公司 | Roller slag cooler used for boiler |
| CN104235824A (en) * | 2014-09-25 | 2014-12-24 | 无锡纳润特科技有限公司 | Tangential sewage dispersing device of boiler sewage discharging expander |
| CN107126914A (en) * | 2017-05-10 | 2017-09-05 | 深圳市航盛新材料技术有限公司 | React kettle device |
| CN108302965A (en) * | 2018-01-17 | 2018-07-20 | 江苏新方圆电气设备制造有限公司 | A kind of rotary barrel for material waste heat recovery |
| CN108317863A (en) * | 2018-01-17 | 2018-07-24 | 江苏新方圆电气设备制造有限公司 | A kind of rotary barrel for high-temp solid material waste heat recovery |
| CN108330270A (en) * | 2018-03-20 | 2018-07-27 | 北京科技大学 | A kind of polygon drum-type oblique milling ball milling steel ball quenching device |
| CN111306535A (en) * | 2020-03-20 | 2020-06-19 | 神华国能集团有限公司 | Slag cooler |
-
2004
- 2004-05-28 CN CN 200410042796 patent/CN1584397A/en active Pending
Cited By (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101481628B (en) * | 2008-11-17 | 2012-08-01 | 上海锅炉厂有限公司 | Method for assembling gasifying furnace internal component coal gas conduit segment 45-degree water-cooled wall barrel |
| CN103388822A (en) * | 2012-05-08 | 2013-11-13 | 阿尔斯通技术有限公司 | Roller slag cooler used for boiler |
| CN103388822B (en) * | 2012-05-08 | 2016-12-14 | 通用电器技术有限公司 | Roller slag cooler used for boiler |
| CN104235824A (en) * | 2014-09-25 | 2014-12-24 | 无锡纳润特科技有限公司 | Tangential sewage dispersing device of boiler sewage discharging expander |
| CN104235824B (en) * | 2014-09-25 | 2016-02-03 | 无锡纳润特科技有限公司 | The tangential sewage dispersal device of boiler blow-off expander |
| CN107126914A (en) * | 2017-05-10 | 2017-09-05 | 深圳市航盛新材料技术有限公司 | React kettle device |
| CN108302965A (en) * | 2018-01-17 | 2018-07-20 | 江苏新方圆电气设备制造有限公司 | A kind of rotary barrel for material waste heat recovery |
| CN108317863A (en) * | 2018-01-17 | 2018-07-24 | 江苏新方圆电气设备制造有限公司 | A kind of rotary barrel for high-temp solid material waste heat recovery |
| CN108302965B (en) * | 2018-01-17 | 2023-08-04 | 江苏新方圆电气设备制造有限公司 | Rotary cylinder for recovering waste heat of materials |
| CN108330270A (en) * | 2018-03-20 | 2018-07-27 | 北京科技大学 | A kind of polygon drum-type oblique milling ball milling steel ball quenching device |
| CN108330270B (en) * | 2018-03-20 | 2023-09-08 | 北京科技大学 | Polygonal drum-type oblique rolling ball milling steel ball quenching device |
| CN111306535A (en) * | 2020-03-20 | 2020-06-19 | 神华国能集团有限公司 | Slag cooler |
| CN111306535B (en) * | 2020-03-20 | 2021-08-27 | 神华国能集团有限公司 | Slag cooler |
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| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |