CN202613408U - 1000MW supercritical tower-type lignite boiler - Google Patents
1000MW supercritical tower-type lignite boiler Download PDFInfo
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- CN202613408U CN202613408U CN 201220266972 CN201220266972U CN202613408U CN 202613408 U CN202613408 U CN 202613408U CN 201220266972 CN201220266972 CN 201220266972 CN 201220266972 U CN201220266972 U CN 201220266972U CN 202613408 U CN202613408 U CN 202613408U
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Abstract
The utility model relates to a 1000MW supercritical tower-type lignite boiler. A conventional medium speed pulverizing system can not meet the requirement of lignite burning, and a fan pulverizing system needs to be applied. The 1000MW supercritical tower-type lignite boiler comprises a boiler body (1), wherein an outer ring of the boiler body is provided with a water cooling wall (2), the boiler body is connected with an air preheater (12) through a flue, the water cooling wall is connected with a storage water tank (5) through a steam-water separator (4), the lower part of the water cooling wall is provided with a SOFA (separated overfire air) burner (13) and a main burner (14), an economizer (6), a low temperature reheater (7), a second-stage superheater (15), a third-stage superheater (8), a high temperature reheater (9), a last-stage superheater (10), a first-stage superheater (11) and a denitration device (17) are sequentially arranged in the water cooling wall from top to bottom, the economizer, the water cooling wall, the separator, the first-stage superheater, the second-stage superheater, the third-stage superheater and the last-stage superheater are sequentially connected, and the low temperature reheater is connected with the high temperature reheater. The utility model is used for the 1000MW supercritical tower-type lignite boiler.
Description
Technical field:
the utility model relates to the overcritical tower boiler using brown coal of a kind of 1000MW.
Background technology:
are burning high-moisture, high volatile, low-calorie brown coal at present; Conventional medium-speed pulverizer pulverized coal preparation system can not satisfy the requirement of brown coal burning; Must adopt fanned powder-grinding system; Adopt boiler smoke as the powder process drier, could guarantee boiler safety, stable operation.
are owing to China's brown coal are stored mainly in the Inner Mongol; Concentrate in the mining area; Therefore reserves are big, and major part is suitable for strip mining transformation, in the area, Inner Mongol and to accelerate to build the big capacity of large-scale brown coal power station be imperative in the surrounding area; So both made full use of lignite resource; Avoided brown coal long-distance transports to bring safety problem, reduce cost of electricity-generating greatly and promoted the economic development in area, Inner Mongol and peripheral province, and superfluous electric power can have been transported to the areas such as south of capital, Tianjin, Tang, North China and power shortages continually.
The utility model content:
The purpose of
the utility model provides a kind of efficient that can make and improves about 1.5%, and power plant efficiency improves about 0.59%, and net coal consumption rate reduces the overcritical tower boiler using brown coal of 1000MW of the superelevation benefit of 4.23 g/kw.h.
Above-mentioned purpose realizes through following technical scheme:
The overcritical tower boiler using brown coal of
a kind of 1000MW; Its composition comprises: body of heater, and water-cooling wall is equipped with in described body of heater outer ring, and described cold water wall connects air preheater through the flue that denitrification apparatus is housed; Described cold water wall connects storage tank through steam-water separator; Burner is equipped with in described cold water wall bottom, and described cold water pars intramuralis is furnished with primary superheater, economizer, low-temperature reheater, three, high temperature reheater, finishing superheater, two-stage superheater from top to bottom successively, and described economizer connects described water-cooling wall; Described water-cooling wall connects separator; Described separator connects two-stage superheater through primary superheater, and described two-stage superheater connects finishing superheater through three, and described low-temperature reheater connects high temperature reheater.
The overcritical tower boiler using brown coal of
described 1000MW; Described flue comprises the furnace outlet flue; Described furnace outlet flue connects the preheater gas approach through denitrification apparatus; Described preheater gas approach connects air preheater, and described air preheater is contained on the steel construction of body of heater organ timbering, and described cold water wall epimere is a vertical tube coil cold water wall; Described cold water wall hypomere is a spirally-wound tubes cold water wall, and described burner is SOFA burner and main burner.
The overcritical tower boiler using brown coal of
described 1000MW, described burner adopts big bellows structure, by dividing plate described big bellows is separated into some air compartments, arranges the burner nozzle that quantity does not wait in the exit of described each bellows; Described burner arrangement is on the four sides wall of furnace wall cooling; Be hexagonal or anistree the layout; Pressure-containing parts is suspended on the big plate-girder, and described big plate-girder is supported by four main frames, and rotary regenerative air preheater is installed on the steel construction of body of heater organ timbering of body of heater back; Described body of heater ground shape is a square, is made up of four vertical main frames; Furnace wall couples together through horizontal arrangement rigidity beam, fixes through vertical rigidity beam simultaneously.
The overcritical tower boiler using brown coal of
described 1000MW, described primary superheater, described low-temperature reheater, described three, described high temperature reheater, described finishing superheater, described two-stage superheater average level are installed in described cold water pars intramuralis.
Beneficial effect:
Big bellows structure is adopted in
1. the burner of the utility model, by dividing plate big bellows is separated into some air compartments, arranges the burner nozzle that quantity does not wait in the exit of each bellows; Burner arrangement is hexagonal or anistree layout on the four sides wall of furnace wall cooling, structure is more stable, and combustion efficiency is better.
The boiler pressure-containing parts of
tower layout of the utility model all is suspended on the big plate-girder, and these big plate-girders are supported by four main frames; Rotary regenerative air preheater is installed on the steel construction of the main boiler organ timbering of linking the back; Whole boiler has also obtained further reinforcement through the structure of boiler self with vertical rigidity beam; Boiler structure is a three-dimensional structure, and ground shape is a square, mainly is made up of four vertical main frames; Boiler setting couples together through horizontal arrangement rigidity beam, fixes through vertical rigidity beam simultaneously to make the mechanism of boiler more safe and reliable.
One of them index of the unit safety operation of
the utility model is exactly whether heating surface moves safety; The overcritical tower boiler of direct current particularly; Because the arrangement of this product heating surface is reasonable, high-temperature surface is in flue-gas temperature than higher zone.
the utility model is independent research design, adopts autonomous intellectual property fully, has formed the exclusive boiler structure form of a cover, special burner structure and the system of safe and stable operation; This product has good social effect and market potential, is domestic first platform, product advanced in the world.
the utility model is compared with postcritical bituminous coal fired boiler, and the efficient of boiler improves about 1.5%, and power plant efficiency improves about 0.59%, and net coal consumption rate reduces about 4.23 g/kw.h.With respect to subcritical boiler using brown coal, efficient, the boiler efficiency of power plant improve greatly, and net coal consumption rate reduces greatly.
The utility model is under the situation of denitrification apparatus that puts into operation, and the NOx discharge capacity can reach 200mg/Nm
3
Standard, in similar unit, maintain the leading position; With respect to Subcritical Units, consider SO
2
With NO
X
The processing and the freight charges of discharging fine and lime-ash, every year can cost saving about 2,500,000 yuan.
The utility model is for economic benefit and social benefit, if unit operation 1 year, can the fuel savings expense with respect to Subcritical Units about 3,000 ten thousand yuan,
Horizontal arrangement is all adopted in
8. the boiler superheater and the reheater of the utility model, has realized having accelerated start-up time simultaneously from hydrophobic function; The heating surface material class of super critical boiler provides, and guarantees the heating surface security of operation, and the material of pressure containing part adopts production domesticization simultaneously, lowers the boiler design cost; Aspect burner design, used the hexagonal of joining fanned powder-grinding system or the anistree tangential firing technology of breathing out the pot independent research, improve the adaptability of boiler to brown coal; The design of high temperature smoking pipeline, economizer exit flue reasonable in design; Arrange simple; Reduced the resistance of fume side, simplified the layout of hanging of back-end ductwork simultaneously, no boiler water circulating pump starts successfully; This startup flow all is in reduced levels in the super critical boiler of capacity, ultra-supercritical boiler, reduced the water consumption when starting so greatly.
this product adopts layout and the boiler operatiopn aspect in novel heating surface layout, the application of heating surface material, burner arrangement, cigarette air channel and has stronger coal and unit capacity adaptability; Heating surface specifications at different levels and heat absorption ratio are reasonable, and structure realizes easily.
Description of drawings:
accompanying drawing 1 is the structural representation of this product.
accompanying drawing 2 is accompanying drawing 1 an overall plan structure sketch map.
accompanying drawing 3 is the enlarged drawing of burner in the accompanying drawing 1.
The specific embodiment:
Embodiment 1:
The overcritical tower boiler using brown coal of
a kind of 1000MW; Its composition comprises: body of heater 1, and water-cooling wall 2 is equipped with in described body of heater outer ring, and described cold water wall connects air preheater 12 through flue; Described cold water wall connects storage tank 5 through steam-water separator 4; SOFA burner 13 and main burner 14 are equipped with in described cold water wall bottom, and described cold water pars intramuralis is furnished with primary superheater 11, economizer 6, low-temperature reheater 7, three 8, high temperature reheater 9, finishing superheater 10, two-stage superheater 15 from top to bottom successively, and described economizer connects water-cooling wall; Described water-cooling wall connects separator; Described separator connects primary superheater, and described primary superheater connects two-stage superheater, and described low-temperature reheater connects high temperature reheater.
The overcritical tower boiler using brown coal of
described 1000MW, described primary superheater, described low-temperature reheater, described three, described high temperature reheater, described finishing superheater, described two-stage superheater average level are installed in described cold water pars intramuralis.
Embodiment 2:
The overcritical tower boiler using brown coal of
1000MW according to claim 1; Described flue comprises furnace outlet flue 16; Described furnace outlet flue connects denitrification apparatus 17 and connects preheater gas approach 3 again; Described preheater gas approach connects air preheater 12; Described burner comprises SOFA burner 13 and main burner 14, and described air preheater is contained on the steel construction of boiler organ timbering, and described cold water wall 2 comprises vertical tube coil cold water wall and spirally-wound tubes cold water wall.
Embodiment 3:
Embodiment 4:
The overcritical tower boiler using brown coal of 1000MW that
are above-mentioned; Foundation is from actual requirement of engineering; Rely on proprietary technology to develop the tower super critical boiler that the 1000MW grade uses brown coal, air distribution fan mill fully, this type of furnace is mainly used in the brown coal unit of burning high-moisture.Require special research and development for satisfying Utilities Electric Co.'s " energy-saving and emission-reduction ", have good social effect and market potential, be domestic first platform, product advanced in the world.
Claims (4)
1. overcritical tower boiler using brown coal of 1000MW; Its composition comprises: body of heater; It is characterized in that: water-cooling wall is equipped with in described body of heater outer ring; Described cold water wall passes the flue that denitrification apparatus is housed and connects air preheater, and described cold water wall connects storage tank through steam-water separator, and burner is equipped with in described cold water wall bottom; Described cold water pars intramuralis is furnished with primary superheater, economizer, low-temperature reheater, three, high temperature reheater, finishing superheater, two-stage superheater from top to bottom successively; Described economizer connects described water-cooling wall; Described water-cooling wall connects separator; Described separator connects two-stage superheater through primary superheater, and described two-stage superheater connects finishing superheater through three, and described low-temperature reheater connects high temperature reheater.
2. the overcritical tower boiler using brown coal of 1000MW according to claim 1; It is characterized in that: described flue comprises the furnace outlet flue; Described furnace outlet flue connects the preheater gas approach through denitrification apparatus; Described preheater gas approach connects air preheater, and described air preheater is contained on the steel construction of body of heater organ timbering, and described cold water wall epimere is a vertical tube coil cold water wall; Described cold water wall hypomere is a spirally-wound tubes cold water wall, and described burner comprises SOFA burner and main burner.
3. the overcritical tower boiler using brown coal of 1000MW according to claim 1 and 2, it is characterized in that: described burner adopts big bellows structure, by dividing plate described big bellows is separated into one group of air compartment, arranges burner nozzle in the exit of described bellows; Described burner arrangement is on the four sides wall of furnace wall cooling; Be hexagonal or anistree the layout; Pressure-containing parts is suspended on the big plate-girder, and described big plate-girder is supported by four main frames, and rotary regenerative air preheater is installed on the steel construction of body of heater organ timbering of body of heater back; Described body of heater ground shape is a square, is made up of four vertical main frames; Furnace wall couples together through horizontal arrangement rigidity beam, fixes through vertical rigidity beam simultaneously.
4. the overcritical tower boiler using brown coal of 1000MW according to claim 1 and 2 is characterized in that: described primary superheater, described low-temperature reheater, described three, described high temperature reheater, described finishing superheater, described two-stage superheater average level are installed in described cold water pars intramuralis.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220266972 CN202613408U (en) | 2012-06-08 | 2012-06-08 | 1000MW supercritical tower-type lignite boiler |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220266972 CN202613408U (en) | 2012-06-08 | 2012-06-08 | 1000MW supercritical tower-type lignite boiler |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202613408U true CN202613408U (en) | 2012-12-19 |
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ID=47347099
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220266972 Expired - Lifetime CN202613408U (en) | 2012-06-08 | 2012-06-08 | 1000MW supercritical tower-type lignite boiler |
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| Country | Link |
|---|---|
| CN (1) | CN202613408U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102679307A (en) * | 2012-06-08 | 2012-09-19 | 哈尔滨锅炉厂有限责任公司 | 1000MW supercritical tower lignite boiler |
| CN108571719A (en) * | 2018-06-29 | 2018-09-25 | 哈尔滨锅炉厂有限责任公司 | A kind of tower watering temperature adjustment boiler using brown coal of large-capacity ultra-supercritical with fan mill |
-
2012
- 2012-06-08 CN CN 201220266972 patent/CN202613408U/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102679307A (en) * | 2012-06-08 | 2012-09-19 | 哈尔滨锅炉厂有限责任公司 | 1000MW supercritical tower lignite boiler |
| CN108571719A (en) * | 2018-06-29 | 2018-09-25 | 哈尔滨锅炉厂有限责任公司 | A kind of tower watering temperature adjustment boiler using brown coal of large-capacity ultra-supercritical with fan mill |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20121219 |