CN106369804A - High-effect heat regenerative system - Google Patents
High-effect heat regenerative system Download PDFInfo
- Publication number
- CN106369804A CN106369804A CN201610773367.6A CN201610773367A CN106369804A CN 106369804 A CN106369804 A CN 106369804A CN 201610773367 A CN201610773367 A CN 201610773367A CN 106369804 A CN106369804 A CN 106369804A
- Authority
- CN
- China
- Prior art keywords
- steam
- steam turbine
- heat regenerative
- steam inlet
- regenerative system
- 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.)
- Granted
Links
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24H—FLUID HEATERS, e.g. WATER OR AIR HEATERS, HAVING HEAT-GENERATING MEANS, e.g. HEAT PUMPS, IN GENERAL
- F24H1/00—Water heaters, e.g. boilers, continuous-flow heaters or water-storage heaters
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01K—STEAM ENGINE PLANTS; STEAM ACCUMULATORS; ENGINE PLANTS NOT OTHERWISE PROVIDED FOR; ENGINES USING SPECIAL WORKING FLUIDS OR CYCLES
- F01K17/00—Using steam or condensate extracted or exhausted from steam engine plant
- F01K17/02—Using steam or condensate extracted or exhausted from steam engine plant for heating purposes, e.g. industrial, domestic
- F01K17/025—Using steam or condensate extracted or exhausted from steam engine plant for heating purposes, e.g. industrial, domestic in combination with at least one gas turbine, e.g. a combustion gas turbine
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24H—FLUID HEATERS, e.g. WATER OR AIR HEATERS, HAVING HEAT-GENERATING MEANS, e.g. HEAT PUMPS, IN GENERAL
- F24H9/00—Details
- F24H9/20—Arrangement or mounting of control or safety devices
- F24H9/2007—Arrangement or mounting of control or safety devices for water heaters
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2257/00—Components to be removed
- B01D2257/40—Nitrogen compounds
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2258/00—Sources of waste gases
- B01D2258/02—Other waste gases
- B01D2258/0283—Flue gases
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Analytical Chemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Control Of Turbines (AREA)
Abstract
The invention discloses a high-effect heat regenerative system. The high-effect heat regenerative system comprises a steam turbine and a plurality of heaters which are connected in series and/or in parallel. The heaters which are connected in series and/or in parallel are provided with a first steam inlet. An exhaust port of the steam turbine communicates with the first steam inlet through a steam pipeline. The high-effect heat regenerative system is further provided with a high-pressure heater and a heat regenerative pipeline. A steam extraction opening is formed in the steam turbine and communicates with a steam inlet of the high-pressure heater through the heat regenerative pipeline, and a switching valve is arranged on the heat regenerative pipeline. The heaters which are connected in series and/or in parallel are further provided with a second steam inlet, and the second steam inlet and the first steam inlet are converged. A steam outlet of the high-pressure heater communicates with the second steam inlet. According to the high-effect heat regenerative system, on the one hand, the water supply temperature can be increased, and on the other hand, heat consumption and power supply coal consumption of the steam turbine can be reduced.
Description
Technical field
The invention belongs to using for heating, such as industry, civilian field is and in particular to a kind of high-effect heat regenerative system.
Background technology
Remove the process of denitrification, antipollution importance in combustion product gases, ask as worldwide
Inscribe and be shrilly contemplated.The technique comparing main flow in the world is divided into: scr and sncr.The denitration of above two technique is former
Reason is all to be nitrogen and other free of contamination compounds by carbamide or ammonia by conversion of nitrogen oxides.
Carbamide or ammonia are flashed to ammonia typically by hot water, then with reaction of nitrogen oxides, common at present side
Method is the steam heating feedwater being produced by boiler or steam turbine, and the hot water after being then heated is used for the steaming of carbamide or ammonia
Send out, find in use, also there is a problem that 1, feed temperature is relatively low, affect denitration efficiency；2nd, steam turbine is adopted to produce
Steam when, thermal loss of steam turbine is too high, and net coal consumption rate is high.
Content of the invention
It is an object of the invention to provide a kind of high-effect heat regenerative system, it is warm that on the one hand this heat regenerative system can improve feedwater
Degree, on the other hand can reduce thermal loss of steam turbine and net coal consumption rate.
For reaching above-mentioned purpose, the base case of the present invention is as follows:
High-effect heat regenerative system, including the heater of steam turbine and multiple series connection and/or parallel connection, multiple series connection and/or parallel connection
Heater is provided with the first steam inlet, and the air vent of described steam turbine is connected with described first steam inlet by jet chimney,
It is additionally provided with high-pressure heater and backheat pipeline, steam turbine offers extraction opening, this extraction opening is added by backheat pipeline and high pressure
The steam inlet connection of hot device, and backheat pipeline is provided with switching valve；Multiple series connection and/or parallel connection heater on be additionally provided with
The second steam inlet that first steam inlet is converged, the steam (vapor) outlet second steam inlet connection of high-pressure heater.
The principle of this programme: in this programme, the steam that the air vent of steam turbine is discharged enters the first steaming by jet chimney
In vapour entrance, in addition increase newly on steam turbine and offer extraction opening, the steam in this extraction opening enters after entering high-pressure heater
Second steam inlet, and converge with the first steam inlet, the steam after converging is the heating feedwater heat exchange in heater, is heated
Hot water afterwards enters in denitrating system.
The advantage of this programme is: in this programme, dexterously increased high-pressure heater, and opens up on steam turbine and draw gas
Mouthful, extraction opening enters high-pressure heater through backheat pipeline, finds after being arranged by said structure, through multiple series connection and/or parallel connection
Heater process after feed temperature improve about 20 DEG C, and thermal loss of steam turbine reduce about 30kj/kwh, equivalent net coal consumption rate
Reduce about 1.2g/kwh.
Prioritization scheme 1, the optimization further to base case, described extraction opening is located at the end of steam turbine acting.Invention
People finds in use, when extraction opening is arranged in the manner described above, can improve final feed temperature, thus improving denitration effect
Rate.
Prioritization scheme 2, the optimization further to base case, any one of prioritization scheme 1, the high pressure cylinder of described steam turbine is
Reverse-flow type, and high pressure cylinder both sides are equipped with least 6 grades actings.The steam turbine of above-mentioned configuration, not only can guarantee that extraction opening is enough
Installing space, and the vapor (steam) temperature through extraction opening discharge is of a relatively high, can improve feedwater temperature in high-pressure heater further
Degree.
Prioritization scheme 3, the optimization further to prioritization scheme 2, the amount of drawing gas of described high-pressure heater is at least 80t/h.
The amount of drawing gas of high-pressure heater controls in above range, can guarantee that the temperature control to feedwater for the high-pressure heater, and can carry
The efficiency of heating surface of other heaters high.
Prioritization scheme 4, the optimization further to base case, when the power of described steam turbine is more than 500mw, hyperbaric heating
Device cuts off.After setting extraction opening on steam turbine, the process of drawing gas can form thrust to each grade blade in steam turbine high-pressure cylinder,
Find in use, when the power of steam turbine is more than 500mw, each grade blade can bear compared with high thrust, so by hyperbaric heating
Device cuts off it is ensured that steam turbine is normally run.
Prioritization scheme 5, the optimization further to prioritization scheme 4, described high-pressure heater puts into and chopping speed is less than
0.5t/min.The input of heater and excision during, the thrust variation ratio of steam-turbine unit is larger, high-pressure heater put into and
When chopping speed controls within the above range, handoff procedure is relatively slow, it can be avoided that the axial float of rotor.
Brief description
Fig. 1 is the structural representation of the present invention high-effect heat regenerative system embodiment；
Fig. 2 is the structural representation of steam turbine part in the present invention high-effect heat regenerative system embodiment.
Specific embodiment
Below by specific embodiment, the present invention is further detailed explanation:
Reference in Figure of description includes: steam turbine 1, high-pressure heater 2, heater 3, the first steam inlet 4, steam
Pipeline 5, backheat pipeline 6, switching valve 7, the second steam inlet 8, extraction opening 9.
Embodiment 1
The present embodiment is substantially as shown in Figures 1 and 2: the present embodiment provides a kind of high-effect heat regenerative system, including steam turbine 1 He
The heater 3 of three series connection, first heater 3 of heater 3 of three series connection has the first steam inlet 4, steam turbine 1
Air vent is connected with the first steam inlet 4 by jet chimney 5, and the present embodiment also has additional high-pressure heater 2 and backheat pipeline
6, steam turbine 1 offers extraction opening 9, this extraction opening 9 is connected with the steam inlet of high-pressure heater 2 by backheat pipeline 6, and
Switching valve 7 is provided with backheat pipeline 6, extraction opening 9 is located at the end of steam turbine 1 acting.Inventor finds in use, draws gas
When mouth 9 is arranged in the manner described above, final feed temperature can be improved, thus improving denitration efficiency；The heater 3 of three series connection
First heater 3 on be further opened with the second steam inlet 8 of converging with the first steam inlet 4, the steam of high-pressure heater 2
Export the second steam inlet 8 to connect.
In the present embodiment, the amount of drawing gas of high-pressure heater 2 is 80t/h.The amount of drawing gas of high-pressure heater 2 controls in above-mentioned model
When enclosing, can guarantee that the temperature control to feedwater for the high-pressure heater 2, and the efficiency of heating surface of other heaters 3 can be improved.
In the present embodiment, when the power of steam turbine 1 is more than 500mw, high-pressure heater 2 cuts off.Steam turbine 1 is arranged
After extraction opening 9, the process of drawing gas can form thrust to each grade blade in steam turbine 1 high pressure cylinder, finds in use, steam turbine
When 1 power is more than 500mw, each grade blade can bear compared with high thrust, so high-pressure heater 2 is cut off it is ensured that steam turbine 1
Normal operation.
When high-pressure heater 2 puts into and cuts off, the speed of switching is less than 0.5t/min.Because the input of heater 3 and
During excision, the thrust variation ratio of steam turbine 1 unit is larger, and high-pressure heater 2 puts into and chopping speed controls in above-mentioned model
When enclosing interior, handoff procedure is relatively slow, it can be avoided that the axial float of rotor.
Embodiment 2
It is in place of the present embodiment and the difference of embodiment 1: the high pressure cylinder of steam turbine 1 is reverse-flow type, and high pressure cylinder both sides are all provided with
There are at least 6 grades actings.The steam turbine 1 of above-mentioned configuration, not only can guarantee that the enough installing spaces of extraction opening 9, and through extraction opening 9
The vapor (steam) temperature discharged is of a relatively high, can improve feed temperature in high-pressure heater 2 further.
Specific workflow:
Taking embodiment 2 as a example illustrate below, in the scheme of embodiment 2, the steam that the air vent of steam turbine 1 is discharged passes through to steam
Steam pipe road 5 enters in the first steam inlet 4, in addition increases newly on steam turbine 1 and offers extraction opening 9, steam is through steam turbine 1 head
After the acting of 6 grades of side, 180 ° of revolution enters latter 6 grades and continues acting, finally flows out from extraction opening 9, the steam in this extraction opening 9 enters
Enter the second steam inlet 8 after high-pressure heater 2, and converge with the first steam inlet 4, the steam after converging is in heater 3
Heating feedwater heat exchange, be heated after hot water enter denitrating system in.
The present embodiment dexterously increased high-pressure heater 2, and opens up extraction opening 9 on steam turbine 1, extraction opening 9 warp
Backheat pipeline 6 enters high-pressure heater 2, finds after being arranged by said structure, through adding that high-pressure heater 2 and three are connected
Feed temperature after hot device 3 is processed improves about 20 DEG C, and steam turbine 1 heat consumption reduces about 30kj/kwh, equivalent net coal consumption rate fall
Low about 1.2g/kwh.
Above-described is only embodiments of the invention, and in scheme, the general knowledge here such as known characteristic excessively describes.
It should be pointed out that for a person skilled in the art, without departing from the inventive concept of the premise, some changes can also be made
Shape and improvement, these also should be considered as protection scope of the present invention, and these are all without the effect affecting present invention enforcement and patent
Practicality.This application claims protection domain should be defined by the content of its claim, the specific embodiment party in description
Formula etc. records the content that can be used for explaining claim.
Claims (6)
1. high-effect heat regenerative system, including the heater of steam turbine and multiple series connection and/or parallel connection, multiple series connection and/or parallel connection
Heater be provided with the first steam inlet, the air vent of described steam turbine passes through jet chimney with described first steam inlet even
Leading to it is characterised in that being additionally provided with high-pressure heater and backheat pipeline, steam turbine offering extraction opening, this extraction opening passes through back
Hot channel is connected with the steam inlet of high-pressure heater, and backheat pipeline is provided with switching valve；Multiple series connection and/or parallel connection plus
The second steam inlet converged with the first steam inlet, steam (vapor) outlet second steam inlet of high-pressure heater are additionally provided with hot device
Connection.
2. high-effect heat regenerative system according to claim 1 is it is characterised in that described extraction opening is located at steam turbine acting
End.
3. high-effect heat regenerative system according to claim 1 and 2 is it is characterised in that the high pressure cylinder of described steam turbine is back
Streaming, and high pressure cylinder both sides are equipped with least 6 grades actings.
4. high-effect heat regenerative system according to claim 3 it is characterised in that the amount of drawing gas of described high-pressure heater at least
For 80t/h.
5. high-effect heat regenerative system according to claim 1 is it is characterised in that the power of described steam turbine is more than 500mw
When, high-pressure heater cuts off.
6. high-effect heat regenerative system according to claim 5 is it is characterised in that described high-pressure heater puts into and cut-out speed
Rate is 0.5t/min.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610773367.6A CN106369804B (en) | 2016-08-31 | 2016-08-31 | High-effect heat regenerative system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610773367.6A CN106369804B (en) | 2016-08-31 | 2016-08-31 | High-effect heat regenerative system |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106369804A true CN106369804A (en) | 2017-02-01 |
| CN106369804B CN106369804B (en) | 2019-05-24 |
Family
ID=57900864
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610773367.6A Active CN106369804B (en) | 2016-08-31 | 2016-08-31 | High-effect heat regenerative system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106369804B (en) |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101650022A (en) * | 2009-08-21 | 2010-02-17 | 上海电力学院 | Steam turbine interstage back-heating heater cross-class connecting system |
| CN201715492U (en) * | 2010-05-28 | 2011-01-19 | 济南市琦泉热电有限责任公司 | Set back-heating system adopting different pressure ratings of steam |
| CN201723259U (en) * | 2010-07-14 | 2011-01-26 | 中国电力工程顾问集团华东电力设计院 | Full-load high-efficiency heat regeneration system for power stations |
| US20110214427A1 (en) * | 2010-03-04 | 2011-09-08 | Xu Zhao | Process for reducing coal consumption in coal fired power plant with steam piping drying |
| CN203273855U (en) * | 2013-03-11 | 2013-11-06 | 中国电力工程顾问集团华东电力设计院 | Externally-arranged steam cooler system in regenerative system of power plant and regenerative system |
| CN104534539A (en) * | 2015-01-08 | 2015-04-22 | 清华大学 | Gas steam combined cycle central heating device and heating method |
| CN206145658U (en) * | 2016-08-31 | 2017-05-03 | 中节能科技投资有限公司 | High -efficient heat recovery system |
-
2016
- 2016-08-31 CN CN201610773367.6A patent/CN106369804B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101650022A (en) * | 2009-08-21 | 2010-02-17 | 上海电力学院 | Steam turbine interstage back-heating heater cross-class connecting system |
| US20110214427A1 (en) * | 2010-03-04 | 2011-09-08 | Xu Zhao | Process for reducing coal consumption in coal fired power plant with steam piping drying |
| CN201715492U (en) * | 2010-05-28 | 2011-01-19 | 济南市琦泉热电有限责任公司 | Set back-heating system adopting different pressure ratings of steam |
| CN201723259U (en) * | 2010-07-14 | 2011-01-26 | 中国电力工程顾问集团华东电力设计院 | Full-load high-efficiency heat regeneration system for power stations |
| CN203273855U (en) * | 2013-03-11 | 2013-11-06 | 中国电力工程顾问集团华东电力设计院 | Externally-arranged steam cooler system in regenerative system of power plant and regenerative system |
| CN104534539A (en) * | 2015-01-08 | 2015-04-22 | 清华大学 | Gas steam combined cycle central heating device and heating method |
| CN206145658U (en) * | 2016-08-31 | 2017-05-03 | 中节能科技投资有限公司 | High -efficient heat recovery system |
Also Published As
| Publication number | Publication date |
|---|---|
| CN106369804B (en) | 2019-05-24 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN101392992B (en) | Silicon smelting electric furnace waste heat power generation process flow and configuration | |
| CN204114887U (en) | A kind of ventilated gas oxidation device of recyclable heat energy | |
| CN201884079U (en) | Heat regenerative system of steam turbine generator unit capable of utilizing waste heat of heat conducting oil furnace in calcination plant | |
| CN206145658U (en) | High -efficient heat recovery system | |
| CN205477781U (en) | Power plant boiler fan heater vapour source optimizing system of integrated injection formula heat pump | |
| CN201866755U (en) | Flue gas waste heat recovery system for boiler in thermal power plant | |
| CN207741585U (en) | A kind of heat recovery coke oven high-temperature flue gas system compact type technology arrangement structure | |
| CN207907269U (en) | A kind of gas cooler and steam air heater association system | |
| CN206682967U (en) | A kind of system of multistage recovery combustion gas fume afterheat | |
| CN106369804A (en) | High-effect heat regenerative system | |
| CN206608968U (en) | A kind of power plant's heat reclaiming system | |
| CN205669436U (en) | Cogeneration blood circulation | |
| CN204202412U (en) | A kind of sinter cooler bootstrap system of forward type superheater | |
| CN203560879U (en) | High-efficiency steam boiler | |
| CN209369886U (en) | A kind of bypass double reheat power generator cooling using deep sea water | |
| CN106382619A (en) | Deep recycling system for gas-fired boiler flue gas waste heat | |
| CN102562200A (en) | Low-pressure residual heat steam power generation system | |
| CN202442323U (en) | Steam superheating device | |
| RU118360U1 (en) | INSTALLATION OF ELECTRIC-HEAT-WATER SUPPLY OF ENTERPRISES OF MINING, TRANSPORT AND PROCESSING OF HYDROCARBON RAW MATERIALS | |
| CN207351232U (en) | A kind of coking flue gas purification system | |
| CN209431670U (en) | A kind of condensation gas boiler | |
| CN205843348U (en) | Cement kiln head waste heat First air device | |
| CN205897078U (en) | High -pressure steam boiler of make full use of tail gas waste heat | |
| CN105863757A (en) | Power grid load operation method of power generation system | |
| CN204177248U (en) | A kind of forming machine high-temperature flue gas heat-energy recovering apparatus |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20230829 Address after: Room 201-6, 2nd Floor, No. 8 Hongfu Road, Daxing District, Beijing 102600 Patentee after: CECEP Energy Saving Technology Co.,Ltd. Address before: Floor 9, building a, energy saving building, No. 42, Xizhimen North Street, Haidian District, Beijing 100082 Patentee before: CECEP TECHNOLOGY INVESTMENT Co.,Ltd. |
|
| TR01 | Transfer of patent right |