CN205640864U - A reposition of redundant personnel low -level (stack -gas) economizer for surpassing supercritical carbon dioxide waste heat of boiler flue gas utilizes - Google Patents
A reposition of redundant personnel low -level (stack -gas) economizer for surpassing supercritical carbon dioxide waste heat of boiler flue gas utilizes Download PDFInfo
- Publication number
- CN205640864U CN205640864U CN201620330497.8U CN201620330497U CN205640864U CN 205640864 U CN205640864 U CN 205640864U CN 201620330497 U CN201620330497 U CN 201620330497U CN 205640864 U CN205640864 U CN 205640864U
- Authority
- CN
- China
- Prior art keywords
- economizer
- carbon dioxide
- low
- gas
- supercritical carbon
- 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.)
- Expired - Fee Related
Links
Abstract
The utility model discloses a reposition of redundant personnel low -level (stack -gas) economizer for surpassing supercritical carbon dioxide waste heat of boiler flue gas utilizes, include low -temperature reheater, low temperature superheater, first economizer, second economizer and be located the afterbody flue of super supercritical carbon dioxide boiler and the high temperature over heater that distributes in proper order along flue gas circulation direction, high -temperature reheater, baffle and reposition of redundant personnel low -level (stack -gas) economizer. The utility model discloses super supercritical carbon dioxide waste heat of boiler flue gas's abundant recovery and utilization can be realized, the efficiency of super supercritical carbon dioxide boiler is improved.
Description
Technical field
This utility model belongs to the efficient field of thermal power of carbon dioxide Brayton cycle, relates to one
The shunting low-level (stack-gas) economizer utilized for supercritical carbon dioxide residual heat from boiler fume.
Background technology
Improve constantly generating set efficiency and development and the environmental conservation of national economy are suffered from important meaning
Justice, especially in the China of electricity consumption big country, improves generating set efficiency and is particularly important.Right
In traditional generating set with steam Rankine cycle as energy conversion system, need to join main steam
Number improves to 700 DEG C, and efficiency can be only achieved about 50%, and need to spend high economic cost and
New Nickel based high-temperature alloy researched and developed by time cost.Accordingly, as new ideas advanced power systems
Supercritical carbon dioxide Brayton cycle efficient power generation system worldwide receives much concern.Various countries
Scholar has carried out substantial amounts of early-stage Study and demonstration to this new power generating system, the most substantially reaches
Become common recognition: energy density is big, heat transfer efficiency high owing to supercritical carbon dioxide has, super
Critical carbon dioxide Brayton cycle efficient power generation system can reach normal in 620 DEG C of temperature ranges
The efficiency of rule steam Rankine cycle 700 DEG C, it is not necessary to novel high temperature alloy of redeveloping, and equipment
Being smaller in size than the steam unit of same parameter, application prospect is the best.
The composition feature of China's energy reserves determines coal group of motors and remains China in coming few decades
The main force of power industry, therefore, supercritical carbon dioxide Brayton cycle Thermal generation unit is non-
Often tally with the national condition, will have extraordinary development prospect in China.As supercritical carbon dioxide
One of nucleus equipment of Brayton cycle Thermal generation unit, supercritical carbon dioxide boiler reliable
Sexual relationship is to the safe and stable operation of whole blood circulation, and the efficiency of supercritical carbon dioxide boiler is also
Directly affect the efficiency of whole blood circulation.
Due to carbon dioxide and the difference of water physical property, and the difference of Brayton cycle and Rankine cycle,
Supercritical carbon dioxide boiler and traditional supercritical steam boiler have significantly difference.Wherein one
Individual marked difference the most is: in carbon dioxide Brayton cycle, regenerator heat exchange amount is very big,
High pressure Biological process is heated to the highest temperature and just enters boiler by the weary gas of turbine, so supercritical dioxy
Change the temperature of carbon boiler inlet working medium far above the steam boiler of same parameter, after causing economizer, empty
Flue-gas temperature before air preheater is too high.With 22MPa, as a example by the loop parameter of 600/600/32 DEG C,
The temperature of carbon dioxide boiler inlet working medium is about 530 DEG C, and after economizer, the temperature of flue gas is then up to
550 DEG C-650 DEG C, far above after same parameter steam boiler economizer 350 DEG C-400 DEG C of cigarette temperature.This
If partial fume waste heat can not get Appropriate application, then can bring burden greatly to air preheater,
And it is unfavorable for the reduction of the final exhaust gas temperature of boiler, have a strong impact on boiler efficiency.
Through investigation, the most all rarely have and relate to the utilization of supercritical carbon dioxide residual heat from boiler fume
Relevant open achievement and patent.Therefore, it is also desirable to substantial amounts of original work, from carbon dioxide
The own characteristic of boiler considers, by structure optimization, the most sufficiently utilizes carbon dioxide boiler
Tail flue gas waste heat, is reduced to the exhaust gas temperature of carbon dioxide boiler in the water of same parameter steam boiler
Flat, improve the efficiency of carbon dioxide boiler.
Utility model content
The purpose of this utility model is the shortcoming overcoming above-mentioned prior art, it is provided that one is used for
The shunting low-level (stack-gas) economizer that supercritical carbon dioxide residual heat from boiler fume utilizes, this economizer can be real
Fully reclaiming and utilizing of existing supercritical carbon dioxide residual heat from boiler fume, improves supercritical titanium dioxide
The efficiency of carbon boiler.
For reaching above-mentioned purpose, described in the utility model for supercritical carbon dioxide boiler smoke
The shunting low-level (stack-gas) economizer of UTILIZATION OF VESIDUAL HEAT IN include low-temperature reheater, low temperature superheater, the first economizer,
Second economizer and be positioned at the back-end ductwork of supercritical carbon dioxide boiler and along flue gas circulation side
To the high temperature superheater being sequentially distributed, high temperature reheater, baffle plate and shunting low-level (stack-gas) economizer, low temperature
Reheater, low temperature superheater, the first economizer and the second economizer are respectively positioned on supercritical carbon dioxide
In the back-end ductwork of boiler, the direction that low-temperature reheater and the first economizer circulate along flue gas is divided successively
Cloth and be positioned at the side of baffle plate, low temperature superheater and the second economizer are along the direction that flue gas circulates successively
It is distributed and is positioned at the opposite side of baffle plate；
In carbon dioxide Brayton cycle electricity generation system, the cold side outlet port of cryogenic regenerator is divided into two-way,
Wherein a road is connected with the entrance of shunting low-level (stack-gas) economizer, and another road is followed with carbon dioxide Bretton
In ring electricity generation system, the cold side input port of high temperature regenerator is connected, shunting low-level (stack-gas) economizer outlet with
After in carbon dioxide Brayton cycle electricity generation system, the cold side outlet port of high temperature regenerator is by pipeline pipe
It is connected with the first economizer and the second economizer.
Also including air preheater, the afterbody cigarette of supercritical carbon dioxide boiler is located at by air preheater
In road, the direction that shunting low-level (stack-gas) economizer and air preheater circulate along flue gas sets gradually.
This utility model has the advantages that
Shunting for the utilization of supercritical carbon dioxide residual heat from boiler fume described in the utility model is low
Temperature economizer includes the back-end ductwork being positioned at supercritical carbon dioxide boiler and along flue gas circulating direction
High temperature superheater, high temperature reheater, baffle plate and the shunting low-level (stack-gas) economizer being sequentially distributed, baffle plate
Side is provided with low-temperature reheater and the first economizer, and the opposite side of baffle plate is provided with low temperature superheater and
Two economizers, by shunting low-level (stack-gas) economizer to low temperature in carbon dioxide Brayton cycle electricity generation system
The supercritical carbon dioxide of regenerator cold side outlet port shunts, the supercritical titanium dioxide being diverted
Carbon carries out heat exchange with the flue gas in the back-end ductwork of supercritical carbon dioxide boiler, preheats this part and surpasses
Critical carbon dioxide, the most again will preheating after supercritical carbon dioxide be transported to the first economizer and
In second economizer, thus realize to supercritical carbon dioxide residual heat from boiler fume fully reclaim and
Utilize, effectively reduce the flue-gas temperature that supercritical carbon dioxide boiler back end ductwork is discharged, thus
Effectively utilize the waste heat of tail flue gas, improve the efficiency of supercritical carbon dioxide boiler.
Accompanying drawing explanation
Fig. 1 is structural representation of the present utility model.
Wherein, 1 for radiation cooling heating surface, 2 be high temperature superheater, 3 be high temperature reheater, 4
For low-temperature reheater, 5 be the first economizer, 6 for low temperature superheater, 7 be the second economizer, 8
For air preheater, 9 for shunting low-level (stack-gas) economizer.
Detailed description of the invention
Below in conjunction with the accompanying drawings this utility model is described in further detail:
With reference to Fig. 1, described in the utility model for supercritical carbon dioxide residual heat from boiler fume profit
Shunting low-level (stack-gas) economizer include low-temperature reheater 4, low temperature superheater the 6, first economizer 5,
Second economizer 7 and be positioned at supercritical carbon dioxide boiler back-end ductwork and along flue gas circulate
High temperature superheater 2, high temperature reheater 3, baffle plate and the shunting low-level (stack-gas) economizer 9 that direction is sequentially distributed,
Low-temperature reheater 4, low temperature superheater the 6, first economizer 5 and the second economizer 7 are respectively positioned on super facing
In the back-end ductwork of boundary's carbon dioxide boiler, low-temperature reheater 4 and the first economizer 5 are along flue gas stream
Logical direction is sequentially distributed and is positioned at the side of baffle plate, low temperature superheater 6 and the second economizer 7 edge
The direction of flue gas circulation is sequentially distributed and is positioned at the opposite side of baffle plate；Carbon dioxide Brayton cycle is sent out
In electricity system, the cold side outlet port of cryogenic regenerator is divided into two-way, wherein a road and shunting low-level (stack-gas) economizer
The entrance of 9 is connected, another road and high temperature regenerator in carbon dioxide Brayton cycle electricity generation system
Cold side input port be connected, shunting low-level (stack-gas) economizer 9 outlet send out with carbon dioxide Brayton cycle
In electricity system, the cold side outlet port of high temperature regenerator is by pipeline Guan Houyu the first economizer 5 and second
Economizer 7 is connected.It addition, this utility model also includes air preheater 8, air preheater 8
It is located in the back-end ductwork of supercritical carbon dioxide boiler, shunting low-level (stack-gas) economizer 9 and air preheat
The direction that device 8 circulates along flue gas sets gradually.
For supercritical carbon dioxide boiler, coal dust and combustion air spray into stove by burner
Interior burning, the heat that burning produces is absorbed by the working medium in radiation cooling heating surface 1 in burner hearth, stove
Thorax outlet cigarette temperature is about 1100 DEG C, and high-temperature flue gas sequentially passes through high temperature superheater 2, high temperature more subsequently
Hot device 3, low-temperature reheater 4 and low temperature superheater the 6, first economizer and the second economizer 7 etc. are subject to
After hot side, it is cooled to about 550 DEG C-650 DEG C；Temperature after flue gas enters shunting low-level (stack-gas) economizer 9 subsequently
Degree continues to reduce, and entering into air preheater 8 flue-gas temperature before is 350 DEG C-400 DEG C, finally,
After flue gas carries out heat exchange by air preheater 8 and the new air of boiler, temperature is down to about 120 DEG C.
The supercritical dioxy of cryogenic regenerator cold side output in carbon dioxide Brayton cycle electricity generation system
Change carbon be divided into two-way, wherein, a road enter into shunting low-level (stack-gas) economizer 9 in supercritical titanium dioxide
Flue gas in the back-end ductwork of carbon boiler carries out heat exchange, and another road enters into carbon dioxide Bretton
In cycle generating system in the cold side of high temperature regenerator, the supercritical two of high temperature regenerator cold side output
The supercritical carbon dioxide that carbonoxide and shunting low-level (stack-gas) economizer 9 export enters into the first province after confluxing
In coal device 5 and the second economizer 7.
The regulation principle of the stream of supercritical carbon dioxide amount of cryogenic regenerator cold side output is: shunt low
In temperature economizer 9, supercritical carbon dioxide is from low temperature in carbon dioxide Brayton cycle electricity generation system
The shunting part of regenerator cold side outlet port, its uninterrupted according to flue gas from the first economizer 5 and the
Two economizers 7 outlet temperature be down to air preheater 8 before temperature required for liberated heat enter
Row regulation, makes full use of boiler tail flue gas waste heat as far as possible, improves boiler efficiency.But, should
The regulation of flow also needs to ensure that in carbon dioxide Brayton cycle electricity generation system, high temperature regenerator changes
Premised on the thermal efficiency is constant.Such as, for the supercritical carbon dioxide of 22MPa/600 DEG C/600 DEG C
Boiler, is computed understanding, then the shunt volume shunted can be according to need in the 0%-8% of boiler total flow
It is adjusted.
Above-described detailed description of the invention, to the purpose of this utility model, technical scheme and useful
Effect is further described, and be it should be understood that and the foregoing is only this utility model
Detailed description of the invention, be not limited to this utility model, all in essence of the present utility model
Within god and principle, any modification, equivalent substitution and improvement etc. done, should be included in this reality
Within novel protection domain.
Claims (2)
1. the shunting low-level (stack-gas) economizer utilized for supercritical carbon dioxide residual heat from boiler fume,
It is characterized in that, including low-temperature reheater (4), low temperature superheater (6), the first economizer (5),
Second economizer (7) and be positioned at the back-end ductwork of supercritical carbon dioxide boiler and along flue gas stream
High temperature superheater (2), high temperature reheater (3), baffle plate and shunting low temperature that logical direction is sequentially distributed save
Coal device (9), low-temperature reheater (4), low temperature superheater (6), the first economizer (5) and second
Economizer (7) is respectively positioned in the back-end ductwork of supercritical carbon dioxide boiler, low-temperature reheater (4)
And first economizer (5) be sequentially distributed along the direction that flue gas circulates and be positioned at the side of baffle plate, low temperature
The direction that superheater (6) and the second economizer (7) circulate along flue gas is sequentially distributed and is positioned at baffle plate
Opposite side；
In carbon dioxide Brayton cycle electricity generation system, the cold side outlet port of cryogenic regenerator is divided into two-way, its
In a road be connected with the entrance of shunting low-level (stack-gas) economizer (9), another road and carbon dioxide Bretton
In cycle generating system, the cold side input port of high temperature regenerator is connected, shunting low-level (stack-gas) economizer (9)
Outlet passes through pipeline with the cold side outlet port of high temperature regenerator in carbon dioxide Brayton cycle electricity generation system
And Guan Houyu the first economizer (5) and the second economizer (7) are connected.
The most according to claim 1 for supercritical carbon dioxide residual heat from boiler fume utilize
Shunting low-level (stack-gas) economizer, it is characterised in that also include air preheater (8), air preheater (8)
Being located in the back-end ductwork of supercritical carbon dioxide boiler, shunting low-level (stack-gas) economizer (9) is pre-with air
The direction that hot device (8) circulates along flue gas sets gradually.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620330497.8U CN205640864U (en) | 2016-04-18 | 2016-04-18 | A reposition of redundant personnel low -level (stack -gas) economizer for surpassing supercritical carbon dioxide waste heat of boiler flue gas utilizes |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620330497.8U CN205640864U (en) | 2016-04-18 | 2016-04-18 | A reposition of redundant personnel low -level (stack -gas) economizer for surpassing supercritical carbon dioxide waste heat of boiler flue gas utilizes |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205640864U true CN205640864U (en) | 2016-10-12 |
Family
ID=57061787
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620330497.8U Expired - Fee Related CN205640864U (en) | 2016-04-18 | 2016-04-18 | A reposition of redundant personnel low -level (stack -gas) economizer for surpassing supercritical carbon dioxide waste heat of boiler flue gas utilizes |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205640864U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111550771A (en) * | 2020-04-30 | 2020-08-18 | 华中科技大学 | Supercritical CO of uniform thermal load2Circular and elliptical tangential boiler body |
-
2016
- 2016-04-18 CN CN201620330497.8U patent/CN205640864U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111550771A (en) * | 2020-04-30 | 2020-08-18 | 华中科技大学 | Supercritical CO of uniform thermal load2Circular and elliptical tangential boiler body |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN105526576B (en) | A kind of coal base supercritical carbon dioxide Brayton cycle double split flow efficient power generation system | |
| CN106195983B (en) | Coal-fired supercritical carbon dioxide Brayton cycle electricity generation system | |
| CN104728823B (en) | A kind of Novel supercritical carbon dioxide coal-burning boiler | |
| CN206036988U (en) | Take gas recirculation's overcritical CO2 boiler plant | |
| CN106287657B (en) | Supercritical carbon dioxide Bretton and organic Rankine combined cycle thermal power generation system | |
| CN106402831B (en) | One kind being used for supercritical CO2The double-flue boiler of Brayton cycle electricity generation system | |
| CN206036990U (en) | Coal -based couple of carbon dioxide working medium combined cycle power generating system | |
| CN106247305B (en) | A kind of double supercritical carbon dioxide Bretton combined cycle thermal power generation systems | |
| CN205897088U (en) | Super supercritical carbon dioxide brayton cycle coal -fired generating unit | |
| CN106870037A (en) | A kind of supercritical carbon dioxide Brayton Cycle system | |
| CN203431914U (en) | Flue gas system using air pre-heater of quartered-sector structure to reduce exhaust gas temperature of secondary reheating boiler | |
| CN206016879U (en) | Coal base carbon dioxide and water association circulating power generation system | |
| CN108678822B (en) | Novel supercritical CO suitable for coal-fired power generation field2Composite circulation system | |
| CN106195984A (en) | Novel coal supercritical carbon dioxide Brayton cycle single-stage shunting electricity generation system | |
| CN104727868A (en) | Coal-based novel supercritical working medium multistage distribution reheat efficient power generation system | |
| CN106285805B (en) | A kind of coal base supercritical carbon dioxide Brayton cycle electricity generation system of intermediate preheating | |
| CN206037009U (en) | Coal -based carbon dioxide and organic working medium combined cycle power generating system | |
| CN106247306B (en) | A kind of supercritical carbon dioxide boiler heating surface arrangement preventing overtemperature of tube wall | |
| CN205332163U (en) | High -efficient power generation system of coal -based super supercritical carbon dioxide brayton cycle double split flow | |
| CN105910090A (en) | System used for lowering exhaust smoke temperature in carbon dioxide Brayton cycle power generation system | |
| CN205782806U (en) | A kind of New type coal base supercritical carbon dioxide boiler plant | |
| CN205640864U (en) | A reposition of redundant personnel low -level (stack -gas) economizer for surpassing supercritical carbon dioxide waste heat of boiler flue gas utilizes | |
| CN106352317B (en) | Supercritical carbon dioxide Bretton and steam Rankine combined cycle thermal power generation system | |
| CN204609964U (en) | Coal-based Novel supercritical working medium multi-stage diffluence reheat type efficient power generation system | |
| CN204534516U (en) | A kind of Novel supercritical carbon dioxide coal-burning boiler |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20161012 Termination date: 20170418 |