CN206347555U - A kind of economic benefits and social benefits supplementary heat exchanger system for MGGH - Google Patents
A kind of economic benefits and social benefits supplementary heat exchanger system for MGGH Download PDFInfo
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- CN206347555U CN206347555U CN201621400426.7U CN201621400426U CN206347555U CN 206347555 U CN206347555 U CN 206347555U CN 201621400426 U CN201621400426 U CN 201621400426U CN 206347555 U CN206347555 U CN 206347555U
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E20/00—Combustion technologies with mitigation potential
- Y02E20/30—Technologies for a more efficient combustion or heat usage
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Abstract
A kind of economic benefits and social benefits supplementary heat exchanger system for MGGH, it is mainly connected successively by air preheater, electric cleaner, air-introduced machine, wet desulfuration tower and chimney forms, described air preheater outlet is provided with the gas cooler that can reduce the electric cleaner entrance flue gas temperature connected below, and the smoke re-heater of chimney entrance flue gas temperature lifting can be made by being provided with before chimney；And heating agent water circulation pipe is provided between the gas cooler and smoke re-heater, and bypass is provided with the heating agent water circulation pipe, economic benefits and social benefits supplementary heat exchanger is had additional in bypass；The economic benefits and social benefits supplementary heat exchanger is that can realize the adverse current shell-and-tube heat exchanger for steaming steam-water heat exchanging and the heat exchange of water water respectively, in the adverse current shell-and-tube heat exchanger, walks tube side, heat transferring medium steam or condensate by heat transferring medium heat medium water and walks shell side；It had both formed cryogenic conditions, has improved the efficiency of dust collection of electric cleaner, can mitigate chimney burn into again and avoid emitting white cigarette phenomenon.
Description
Technical field
The utility model relates to a kind of economic benefits and social benefits supplementary heat exchanger system for MGGH, belong to thermal power plant design
Technical field.
Background technology
Under the driving of energy saving and efficiency increasing and cleaning discharge, thermal power generation plant smoke residual heat is mainly included using technology：1st, it is low
Warm economizer technology, i.e., use unit heat regenerative system to improve economy by fume afterheat.Low-level (stack-gas) economizer both can be disposed at
After air-introduced machine, it is to avoid air-introduced machine upstream equipment low-temperature corrosion；Also it can be disposed at before electric cleaner, form low cryogenic conditions, improve
The efficiency of dust collection of electric cleaner；2nd, the neat stress after desulfurization is heated using MGGH systems Mist heat recovering, it is rotten to mitigate chimney
Lose, avoid emitting white cigarette phenomenon.MGGH systems are divided into gas cooler and smoke re-heater, and smoke re-heater is arranged in wet desulphurization
Between chimney, gas cooler both can be disposed at after air-introduced machine（Avoid air-introduced machine upstream equipment low-temperature corrosion）, can also arrange
In before electric cleaner（Low cryogenic conditions are formed, the efficiency of dust collection of electric cleaner is improved）.
The content of the invention
The purpose of this utility model is that the deficiency for improving existing MGGH systems is enterprising in prior art basis there is provided one kind
The row well, run under varying environment operating mode convenient, reliable, the neat stress after desulfurization can be both heated, also using many waste heats
Amount enters Steam Turbine Regenerative System, improves the economic benefits and social benefits supplementary heat exchanger system for MGGH of unit heat economy.
The purpose of this utility model is completed by following technical solution, a kind of economic benefits and social benefits auxiliary heat-exchanging for MGGH
Device system, it is mainly connected successively by air preheater, electric cleaner, air-introduced machine, wet desulfuration tower and chimney forms, described
Air preheater outlet be provided with the gas cooler that can reduce the electric cleaner entrance flue gas temperature that connects below, in cigarette
The smoke re-heater of chimney entrance flue gas temperature lifting can be made by being provided with before chimney；And in the gas cooler and flue gas reheat
Heating agent water circulation pipe is provided between device, and bypass is provided with the heating agent water circulation pipe, is had additional in bypass double
Imitate supplementary heat exchanger.
As preferred：The economic benefits and social benefits supplementary heat exchanger is that can realize the reverse stream pipe of steam-water heat exchange and water-water heat exchange respectively
Shell heat exchanger, in the adverse current shell-and-tube heat exchanger, tube side, heat transferring medium steam or condensate are walked by heat transferring medium heat medium water
Walk shell side.
As preferred：The economic benefits and social benefits supplementary heat exchanger connects with steam turbine condensate heat regenerative system and Auxiliary Steam respectively
Connect, the economic benefits and social benefits supplementary heat exchanger is connected in parallel between steam turbine grade low-pressure heater, and the heat of heat medium water is taken away by condensate,
Heat medium water can be heated by auxiliary steam again.
Heat medium water in the gas cooler of the existing MGGH systems absorbs flue gas heat, into flue gas heater heating
Neat stress after desulfurization.The utility model increases in MGGH heating agents waterpipe to be bypassed, and sets steam-water/water-water double-effect heat exchange
Device, economic benefits and social benefits supplementary heat exchanger is imported and exported provided with condensation water entrance and auxiliary steam.Condensate comes from unit backheat system
System, i.e., the partial coagulation water of certain grade low-pressure heater entrance absorbs heat medium water heat, economic benefits and social benefits auxiliary by economic benefits and social benefits supplementary heat exchanger
The condensation water out of heat exchanger is connected with this grade of low-pressure heater outlet；Auxiliary steam comes from the auxiliary vapour system of unit, by double
Supplementary heat exchanger heating heat medium water is imitated, hydrophobic outlet is connected with condenser.
The utility model has the following technical effect that：The adaptability and economy of existing MGGH systems are improved, passes through economic benefits and social benefits
Supplementary heat exchanger, when the high exhaust gas temperature of environment temperature is high, using part low pressure condensate water the unnecessary heat of MGGH systems
Amount is taken away, and improves the heat-economy of unit, when the low exhaust gas temperature of environment temperature is low, MGGH systems are given using auxiliary steam
Heat medium water additional heat, it is ensured that chimney inlet flue gas temperature is raised to 80 DEG C.
Brief description of the drawings
Fig. 1 is structure composition schematic diagram of the present utility model.
Embodiment
Below in conjunction with the accompanying drawings and the examples of 600MW grade coal units is described in detail to the utility model.Fig. 1 institutes
Show, a kind of economic benefits and social benefits supplementary heat exchanger system for MGGH described in the utility model, it is mainly removed by air preheater 1, electricity
Dirt device 3, air-introduced machine 4, wet desulfuration tower 5 and chimney 8 connect successively to be formed, and the described outlet of air preheater 1 is provided with energy
The gas cooler 2 for reducing the entrance flue gas temperature of electric cleaner 3 connected below, chimney 8 can be made by being provided with before chimney 8
The smoke re-heater 7 of entrance flue gas temperature lifting；And it is provided with heating agent between the gas cooler 2 and smoke re-heater 7
Water circulation pipe, and bypass is provided with the heating agent water circulation pipe, economic benefits and social benefits supplementary heat exchanger 9 is had additional in bypass.
Shown in figure, the economic benefits and social benefits supplementary heat exchanger 9 is that can realize the adverse current of steam-water heat exchange and water-water heat exchange respectively
Shell-and-tube heat exchanger, in the adverse current shell-and-tube heat exchanger, tube side, heat transferring medium steam or condensation are walked by heat transferring medium heat medium water
Water walks shell side.
Economic benefits and social benefits supplementary heat exchanger 9 of the present invention connects with steam turbine condensate heat regenerative system and Auxiliary Steam respectively
Connect, the economic benefits and social benefits supplementary heat exchanger is connected in parallel between steam turbine grade low-pressure heater, and the heat of heat medium water is taken away by condensate,
Heat medium water can be heated by auxiliary steam again.
When exhaust gas temperature is normal, economic benefits and social benefits supplementary heat exchanger 9 does not work, and heat medium water sucks heat from gas cooler 2
Measure, while reducing cigarette temperature to 90 DEG C or so, be that electric cleaner 3 realizes low cryogenic conditions, the heat medium water after heat absorption flows through flue gas again
Heat is released during hot device 7, while the temperature of saturation wet flue gas is heated into 80 DEG C or so by 50 DEG C or so, flue gas enters back into chimney
8 discharges.When exhaust gas temperature is too high, economic benefits and social benefits supplementary heat exchanger 9 works, and heat medium water is from the suction of gas cooler 2 heat, same
When reduction cigarette temperature to 90 DEG C or so, absorb it is hot after a heat medium water part flow through economic benefits and social benefits supplementary heat exchanger 9, heat is transmitted to certain level
The condensate that low-pressure heater entrance comes, returns to this grade of low-pressure heater outlet after condensate heat absorption, unit heat economy is improved,
The heat medium water of bypass enters behind smoke re-heater 7 after heat release, with the temperature through the saturation wet flue gas of smoke re-heater 7 by 50 DEG C
The heat medium water supervisor that left and right is heated to 80 DEG C or so converges.When exhaust gas temperature is too low, economic benefits and social benefits supplementary heat exchanger 9 works,
Heat medium water absorbs the heat medium water after heat and all flows through side from the suction of gas cooler 2 heat, while reducing cigarette temperature to 90 DEG C or so
The economic benefits and social benefits supplementary heat exchanger 9 on road, the auxiliary steam being put into further is heated, and the drain recovery after steam heat release enters condenser,
Heat medium water after being heated through auxiliary vapour goes to smoke re-heater 7 to discharge heat, while by the temperature of saturation wet flue gas by 50 DEG C of left sides again
The right side is heated to 80 DEG C or so.
Embodiment：
Shown in Fig. 1, the utility model provides a kind of economic benefits and social benefits supplementary heat exchanger system for MGGH, in air preheater 1
Outlet is provided with gas cooler 2, smoke re-heater 7 is set before chimney 8, between gas cooler 2 and smoke re-heater 7
It is disposed with electric cleaner 3, air-introduced machine 4, wet desulfuration tower 5 and wet electrical dust precipitator 6, gas cooler 2 and flue gas reheat
Connected between device 7 with circulation heating agent waterpipe, described above is routine MGGH systems, and in circulation heating agent waterpipe provided with side
Economic benefits and social benefits supplementary heat exchanger 9 is set in road, bypass.
During spring and autumn operating mode, air preheater 1 exports total exhaust gas volumn 540Nm3/ s, the entrance flue gas temperature 125 of gas cooler 2
DEG C, flue-gas temperature is down to 85 DEG C, gas cooler after heat exchange（2）Entrance heat medium water temperature 70 C, outlet heating agent coolant-temperature gage 100
DEG C, heating agent water-carrying capacity 860t/h.50 DEG C of 7 entrance flue gas temperature of smoke re-heater, flue-gas temperature rises to 80 DEG C, flue gas after heat exchange
100 DEG C of the entrance heating agent coolant-temperature gage of reheater 7, exports heat medium water temperature 70 C.
During summer condition, exhaust gas temperature rise, 140 DEG C of 2 entrance flue gas temperature of gas cooler, the flue gas after heat exchange
Temperature is down to 90 DEG C, the entrance heat medium water temperature 70 C of gas cooler 2,110 DEG C of outlet heating agent coolant-temperature gage, heating agent water-carrying capacity
800t/h.Heat medium water after the heat absorption of gas cooler 2 out, has 280t/h to flow through economic benefits and social benefits supplementary heat exchanger 9 from bypass and is coagulated
Bear water and be cooled to 70 DEG C, 56 DEG C of the condensing water temperature come from #7 low-pressure heaters entrance, flow 440t/h, through economic benefits and social benefits auxiliary heat-exchanging
81 DEG C are heated to after device 9, then the partial coagulation water merges into low into #6 all the way again with the condensate through the low heating of #7
Plus.The heat medium water of 280t/h after bypassing the heat release of economic benefits and social benefits supplementary heat exchanger 9, with the master after the lifting cigarette temperature of smoke re-heater 7
Gas cooler 2 is entered back into after the mixing of pipe 520t/h heat medium waters.50 DEG C of 7 entrance flue gas temperature of smoke re-heater, the cigarette after heat exchange
Temperature degree rises to 80 DEG C, and 110 DEG C of the entrance heating agent coolant-temperature gage of smoke re-heater 7 exports heat medium water temperature 70 C.
During winter condition, exhaust gas temperature reduction, 113 DEG C of 2 entrance flue gas temperature of gas cooler, the flue gas after heat exchange
Temperature is down to 85 DEG C, the entrance heat medium water temperature 70 C of gas cooler 2,100 DEG C of outlet heating agent coolant-temperature gage, heating agent water-carrying capacity
600t/h.The heat medium water of 600t/h after the heat absorption of gas cooler 2 out, all flows through economic benefits and social benefits supplementary heat exchanger 9 from bypass
110 DEG C are heated to by auxiliary steam, from 300 DEG C next of auxiliary steam temperature of Auxiliary Steam, pressure 1.2MPa, flow
8.5t/h, it is hydrophobic to be changed into saturated mode after the heat release of economic benefits and social benefits supplementary heat exchanger 9, and then the part drain recovery is to condenser.Through side
Heat medium water after the heating of road economic benefits and social benefits supplementary heat exchanger 9, into the lifting cigarette temperature of smoke re-heater 7,50 DEG C of entrance flue gas temperature, through changing
Flue-gas temperature rises to 80 DEG C after heat, and 110 DEG C of the entrance heating agent coolant-temperature gage of smoke re-heater 7 exports heat medium water temperature 70 C.
Claims (3)
1. a kind of economic benefits and social benefits supplementary heat exchanger system for MGGH, it is mainly by air preheater（1）, electric cleaner（3）, air inducing
Machine（4）, wet desulfuration tower（5）And chimney（8）Connect successively and form, it is characterised in that described air preheater（1）Outlet
It is provided with the electric cleaner that can make to connect below（3）The gas cooler of entrance flue gas temperature reduction（2）, in chimney（8）Before
Chimney can be made by being provided with（8）The smoke re-heater of entrance flue gas temperature lifting（7）；And in the gas cooler（2）With flue gas
Reheater（7）Between be provided with heating agent water circulation pipe, and be provided with bypass on the heating agent water circulation pipe, increase in bypass
Provided with economic benefits and social benefits supplementary heat exchanger（9）.
2. the economic benefits and social benefits supplementary heat exchanger system according to claim 1 for MGGH, it is characterised in that the economic benefits and social benefits auxiliary
Heat exchanger（9）For the adverse current shell-and-tube heat exchanger of steam-water heat exchange and water-water heat exchange can be realized respectively, in the adverse current shell-and-tube
In heat exchanger, tube side, heat transferring medium steam or condensate are walked by heat transferring medium heat medium water and walk shell side.
3. the economic benefits and social benefits supplementary heat exchanger system for MGGH according to claim 1 and 2, it is characterised in that the economic benefits and social benefits are auxiliary
Help heat exchanger（9）It is connected respectively with steam turbine condensate heat regenerative system and Auxiliary Steam, the economic benefits and social benefits supplementary heat exchanger is simultaneously
It is associated between steam turbine grade low-pressure heater, the heat of heat medium water is taken away by condensate, can be heated again by auxiliary steam
Heat medium water.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621400426.7U CN206347555U (en) | 2016-12-20 | 2016-12-20 | A kind of economic benefits and social benefits supplementary heat exchanger system for MGGH |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621400426.7U CN206347555U (en) | 2016-12-20 | 2016-12-20 | A kind of economic benefits and social benefits supplementary heat exchanger system for MGGH |
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| CN206347555U true CN206347555U (en) | 2017-07-21 |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108224462A (en) * | 2018-03-02 | 2018-06-29 | 南京圣诺热管有限公司 | It is a kind of to eliminate white misty rain joint flue gas waste heat recovery system |
| CN108587693A (en) * | 2018-05-24 | 2018-09-28 | 邵博 | A kind of device of fired power generating unit coupled biological matter gasification burning power generation |
| CN108671726A (en) * | 2018-06-01 | 2018-10-19 | 江苏联慧资源环境科技有限公司 | The method that wet desulfurization flue gas takes off bletilla desulfurization wastewater emission reduction |
| CN109999627A (en) * | 2018-01-05 | 2019-07-12 | 北京万信同和能源科技有限公司 | Wet plume abatement equipment and method for catalytic cracking wet desulphurization device |
| CN110631040A (en) * | 2019-10-18 | 2019-12-31 | 河北冀研能源科学技术研究院有限公司 | High-efficiency energy-saving smoke condensing and reheating white smoke eliminating system |
| CN110822463A (en) * | 2018-08-10 | 2020-02-21 | 北京蓝亚能源科技有限公司 | Flue gas that condensation was reheated disappears white system |
| CN113606969A (en) * | 2021-06-23 | 2021-11-05 | 上海志筠环保科技有限公司 | Controllable double-phase heating medium forced circulation heat exchange system |
-
2016
- 2016-12-20 CN CN201621400426.7U patent/CN206347555U/en active Active
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109999627A (en) * | 2018-01-05 | 2019-07-12 | 北京万信同和能源科技有限公司 | Wet plume abatement equipment and method for catalytic cracking wet desulphurization device |
| CN108224462A (en) * | 2018-03-02 | 2018-06-29 | 南京圣诺热管有限公司 | It is a kind of to eliminate white misty rain joint flue gas waste heat recovery system |
| CN108587693A (en) * | 2018-05-24 | 2018-09-28 | 邵博 | A kind of device of fired power generating unit coupled biological matter gasification burning power generation |
| CN108671726A (en) * | 2018-06-01 | 2018-10-19 | 江苏联慧资源环境科技有限公司 | The method that wet desulfurization flue gas takes off bletilla desulfurization wastewater emission reduction |
| CN108671726B (en) * | 2018-06-01 | 2021-06-15 | 江苏联慧资源环境科技有限公司 | Method for removing flue gas by wet desulphurization and reducing emission of desulphurization wastewater |
| CN110822463A (en) * | 2018-08-10 | 2020-02-21 | 北京蓝亚能源科技有限公司 | Flue gas that condensation was reheated disappears white system |
| CN110631040A (en) * | 2019-10-18 | 2019-12-31 | 河北冀研能源科学技术研究院有限公司 | High-efficiency energy-saving smoke condensing and reheating white smoke eliminating system |
| CN113606969A (en) * | 2021-06-23 | 2021-11-05 | 上海志筠环保科技有限公司 | Controllable double-phase heating medium forced circulation heat exchange system |
| CN113606969B (en) * | 2021-06-23 | 2024-02-09 | 上海志筠环保科技有限公司 | Controllable double-phase heat medium forced circulation heat exchange system |
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