CN116839014A - Quick response boiler for thermal power peak regulation - Google Patents
Quick response boiler for thermal power peak regulation Download PDFInfo
- Publication number
- CN116839014A CN116839014A CN202310962018.9A CN202310962018A CN116839014A CN 116839014 A CN116839014 A CN 116839014A CN 202310962018 A CN202310962018 A CN 202310962018A CN 116839014 A CN116839014 A CN 116839014A
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- China
- Prior art keywords
- boiler
- flue
- gas
- hearth
- temperature
- 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.)
- Pending
Links
- 239000007789 gas Substances 0.000 claims abstract description 48
- 238000010248 power generation Methods 0.000 claims abstract description 36
- 238000010438 heat treatment Methods 0.000 claims abstract description 29
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 claims abstract description 21
- 239000003546 flue gas Substances 0.000 claims abstract description 21
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 20
- 238000002485 combustion reaction Methods 0.000 claims abstract description 19
- 238000002360 preparation method Methods 0.000 claims abstract description 19
- 230000005611 electricity Effects 0.000 claims abstract description 11
- 239000000428 dust Substances 0.000 claims abstract description 10
- 230000008676 import Effects 0.000 claims abstract 2
- 238000004321 preservation Methods 0.000 claims description 35
- 238000009413 insulation Methods 0.000 claims description 9
- 238000012544 monitoring process Methods 0.000 claims description 9
- 238000001816 cooling Methods 0.000 claims description 4
- 238000005485 electric heating Methods 0.000 claims description 3
- 239000000463 material Substances 0.000 claims description 3
- 150000003839 salts Chemical class 0.000 claims description 3
- 239000003245 coal Substances 0.000 description 9
- 239000002817 coal dust Substances 0.000 description 6
- 239000000779 smoke Substances 0.000 description 4
- 238000006477 desulfuration reaction Methods 0.000 description 3
- 230000023556 desulfurization Effects 0.000 description 3
- 230000003009 desulfurizing effect Effects 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 230000001502 supplementing effect Effects 0.000 description 2
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 238000007664 blowing Methods 0.000 description 1
- 238000009529 body temperature measurement Methods 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 230000001419 dependent effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F22—STEAM GENERATION
- F22B—METHODS OF STEAM GENERATION; STEAM BOILERS
- F22B35/00—Control systems for steam boilers
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23J—REMOVAL OR TREATMENT OF COMBUSTION PRODUCTS OR COMBUSTION RESIDUES; FLUES
- F23J15/00—Arrangements of devices for treating smoke or fumes
- F23J15/06—Arrangements of devices for treating smoke or fumes of coolers
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23L—SUPPLYING AIR OR NON-COMBUSTIBLE LIQUIDS OR GASES TO COMBUSTION APPARATUS IN GENERAL ; VALVES OR DAMPERS SPECIALLY ADAPTED FOR CONTROLLING AIR SUPPLY OR DRAUGHT IN COMBUSTION APPARATUS; INDUCING DRAUGHT IN COMBUSTION APPARATUS; TOPS FOR CHIMNEYS OR VENTILATING SHAFTS; TERMINALS FOR FLUES
- F23L15/00—Heating of air supplied for combustion
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23L—SUPPLYING AIR OR NON-COMBUSTIBLE LIQUIDS OR GASES TO COMBUSTION APPARATUS IN GENERAL ; VALVES OR DAMPERS SPECIALLY ADAPTED FOR CONTROLLING AIR SUPPLY OR DRAUGHT IN COMBUSTION APPARATUS; INDUCING DRAUGHT IN COMBUSTION APPARATUS; TOPS FOR CHIMNEYS OR VENTILATING SHAFTS; TERMINALS FOR FLUES
- F23L5/00—Blast-producing apparatus before the fire
- F23L5/02—Arrangements of fans or blowers
-
- 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
- F24H3/00—Air heaters
- F24H3/02—Air heaters with forced circulation
- F24H3/022—Air heaters with forced circulation using electric energy supply
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28D—HEAT-EXCHANGE APPARATUS, NOT PROVIDED FOR IN ANOTHER SUBCLASS, IN WHICH THE HEAT-EXCHANGE MEDIA DO NOT COME INTO DIRECT CONTACT
- F28D20/00—Heat storage plants or apparatus in general; Regenerative heat-exchange apparatus not covered by groups F28D17/00 or F28D19/00
- F28D20/0034—Heat storage plants or apparatus in general; Regenerative heat-exchange apparatus not covered by groups F28D17/00 or F28D19/00 using liquid heat storage material
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28D—HEAT-EXCHANGE APPARATUS, NOT PROVIDED FOR IN ANOTHER SUBCLASS, IN WHICH THE HEAT-EXCHANGE MEDIA DO NOT COME INTO DIRECT CONTACT
- F28D20/00—Heat storage plants or apparatus in general; Regenerative heat-exchange apparatus not covered by groups F28D17/00 or F28D19/00
- F28D20/0034—Heat storage plants or apparatus in general; Regenerative heat-exchange apparatus not covered by groups F28D17/00 or F28D19/00 using liquid heat storage material
- F28D2020/0047—Heat storage plants or apparatus in general; Regenerative heat-exchange apparatus not covered by groups F28D17/00 or F28D19/00 using liquid heat storage material using molten salts or liquid metals
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Air Supply (AREA)
Abstract
The utility model provides a thermal power peak regulation quick response boiler, including steam-water system, buggy preparation and combustion system, dust remover, desulphurization unit, buggy preparation and combustion system include furnace (1), steam-water system includes steam drum, water-cooled wall (2), superheater (5) and economizer (7), furnace (1) communicates with each other with the flue gas import of air preheater (4) through flue (3), still include gas heating device (10), after buggy preparation and combustion system stops the electricity generation operation, gas heating device (10) can carry the gas that is heated to in furnace (1), let the temperature of furnace (1) keep near the required temperature of normal electricity generation. The purpose of the boiler is to provide a thermal power peak regulation quick response boiler which enables the coal-fired power generation boiler to be in a thermal state standby under an electric power zero load state, and can quickly respond and start the boiler in a thermal state once the power grid is needed, so that the coal-fired power generation boiler immediately enters a power generation state.
Description
Technical Field
The invention relates to a thermal power peak regulation quick response boiler.
Background
There is a significant problem in using solar power, that is, the peak of solar power generation often does not correspond to the peak of power consumption, and the peak period of power consumption may not be the peak period of solar power generation. For this reason, there is a need for a power generation facility with backup that can quickly respond to the supply of electric power during peak electricity consumption periods, supplementing the gap in the power supply during peak electricity consumption periods. At present, a method for quickly supplementing the power supply gap in the electricity consumption peak period in China is still dependent on thermal power generation equipment, and therefore, the existing thermal power boiler needs to be changed into a form capable of quickly responding to the electricity consumption gap to operate, namely, the thermal power boiler does not generate electricity at all in the peak period of solar power generation, and the thermal power boiler can quickly respond to immediately start generating electricity in the period of the electricity consumption peak.
However, the existing coal-fired power generation boiler usually needs ignition and preheating time of 2-3 days from the state of stopping the boiler to the start of full-load power generation, but the load of external power transmission of the coal-fired power generation boiler cannot be generally lower than 30% of the power generation load designed by the coal-fired power generation boiler, and the coal-fired power generation boiler cannot work normally under the power generation load. In order to realize carbon emission reduction and more fully utilize solar power generation, the ideal condition is that the coal-fired power generation boiler can be in thermal state standby under the power zero-load state, and once the power grid is needed, the boiler can be quickly responded and started in thermal state to immediately enter the power generation state.
Disclosure of Invention
The invention aims to provide a thermal power peak regulation quick response boiler which enables a coal-fired power generation boiler to be in thermal state standby under an electric power zero load state, can quickly respond and start the boiler in thermal state once power is needed by a power grid, and enables the coal-fired power generation boiler to immediately enter a power generation state.
The invention relates to a thermal power peak regulation quick response boiler, which comprises a steam-water system, a pulverized coal preparation and combustion system, a dust remover and a desulfurizing device, wherein the pulverized coal preparation and combustion system comprises a hearth, the steam-water system comprises a steam drum, a water cooling wall, a superheater, a reheater and an economizer, the hearth is communicated with a flue gas inlet of an air preheater through a flue, and the boiler further comprises a gas heating device, when the pulverized coal preparation and combustion system stops generating operation, the gas heating device can convey heated gas into the hearth, so that the temperature of the hearth is kept near the temperature required by normal power generation.
Preferably, the gas heating device is communicated with the middle lower part of the hearth through one port of the heat preservation channel, the heat preservation channel is connected in series with the circulating fan, the other port of the heat preservation channel is communicated with the flue gas outlet of the air preheater, the outer walls of the heat preservation channel and the circulating fan are coated with heat preservation material layers, the rotor of the air preheater is in a rotating state, the gas heated by the gas heating device flows through the hearth and the flue, the temperature of the hearth, the flue, the water-cooled wall, the superheater, the reheater, the economizer and the rotor of the air preheater are kept near the temperature required by normal power generation of the boiler, the flue gas air door is arranged on the flue from the flue gas outlet of the air preheater to the air inlet section of the dust remover, and the flue gas air door is in a state of cutting off the flue when the circulating fan is in a starting running state.
Preferably, the air inlet section and the air outlet section of the heat preservation channel are respectively provided with an air door, the circulating fan is connected in series on the heat preservation channel between the gas heating device and the smoke outlet of the air preheater, and the circulating fan can enable the hearth to be in a micro negative pressure state.
Preferably, the negative pressure section of the heat preservation channel is provided with an air inlet, an air inlet air door is arranged at the air inlet, the air circulated in the heat preservation channel is air or air mixed with smoke, and the air circulated in the heat preservation channel cannot be water vapor.
Preferably, the gas heating device is an electric heating device or a device for heating gas through molten salt heat exchange.
Preferably, a plurality of heat preservation channel temperature sensors for monitoring the gas temperatures at different positions in the heat preservation channel are arranged in the heat preservation channel;
a plurality of hearth temperature sensors for monitoring temperatures at different positions in the hearth are arranged in the hearth;
and a plurality of flue temperature sensors for monitoring temperatures at different positions in the flue are arranged in the flue.
The invention relates to a thermal power peak regulation quick response boiler, which comprises a steam-water system, a pulverized coal preparation and combustion system, a dust remover and a desulfurization device, wherein the pulverized coal preparation and combustion system comprises a hearth, the steam-water system comprises a steam drum, a water-cooled wall, a superheater, a reheater and an economizer, the hearth is communicated with a flue gas inlet of an air preheater through a flue, and is communicated with a hot gas outlet of a gas heating device. When in use, the temperature of the hearth is kept near the temperature required for normal power generation. Therefore, the thermal power peak regulation quick response boiler has the characteristics that the coal-fired power generation boiler can be in a thermal state standby state under the power zero load state, and can be quickly responded and started in the thermal state once the power grid is required to be used, so that the coal-fired power generation boiler can immediately enter the power generation state.
Other details and features of the thermal power peak shaving rapid response boiler of the present invention will become apparent upon review of the embodiments described in detail below in conjunction with the accompanying drawings.
Drawings
FIG. 1 is a schematic structural diagram of an embodiment of a thermal power peak shaving fast response boiler of the present invention.
Detailed Description
As shown in fig. 1, the thermal power peak regulation rapid response boiler comprises a steam-water system, a coal dust preparation and combustion system, a dust remover 13 and a desulfurization device 14, wherein the coal dust preparation and combustion system comprises a hearth 1, the steam-water system comprises a steam drum, a water-cooled wall 2, a superheater 5, a reheater 6 and an economizer 7, the hearth 1 is communicated with a flue gas inlet of an air preheater 4 through a flue 3, and the thermal power peak regulation rapid response boiler further comprises a gas heating device 10, when the coal dust preparation and combustion system stops generating operation, the gas heating device 10 can convey heated gas into the hearth 1, so that the temperature of the hearth 1 is kept near the temperature required by normal power generation.
The steam-water system, the pulverized coal preparation and combustion system stop generating operation, namely, the coal mill 14 and the pulverized coal feeding fan 15 in the pulverized coal preparation and combustion system are in a non-operating state, the combustor 16 is in a closed state, the dust remover 13 and the desulfurization device 14 are in a non-operating state, the induced draft fan 17 for leading out smoke in the hearth 1 is in a stop state, the blower 18 for blowing air to the hearth 1 through the air preheater 4 is in a stop state, the chimney 19 is in a state of stopping exhausting smoke outwards, and steam in the steam drum, the water-cooling wall 2, the superheater 5, the reheater 6 and the economizer 7 is kept in the steam-water system as far as possible and does not flow out, and the steam is kept near the temperature during the original generating operation.
The specific values of the temperature of the vapor in the vapor-water system can be acquired through each temperature sensor installed on the existing boiler, and if necessary, a new sensor for measuring the temperature can be additionally installed at the position where temperature measurement is needed.
As a further improvement of the invention, the gas heating device 10 is communicated with the middle lower part of the hearth 1 through one port of the heat preservation channel 8, the heat preservation channel 8 is connected in series with the circulating fan 9, the other port of the heat preservation channel 8 is communicated with the flue gas outlet of the air preheater 4, the heat preservation channel 8 and the outer wall of the circulating fan 9 are coated with heat preservation material layers, the rotor of the air preheater 4 is in a rotating state, the gas heated by the gas heating device 10 flows through the hearth 1 and the flue 3, the temperatures of the hearth 1, the flue 3, the water-cooled wall 2, the superheater 5, the reheater 6, the economizer 7 and the rotor of the air preheater 4 are kept near the temperatures required by normal power generation of the boiler, the flue gas outlet of the air preheater 4 is provided with a flue gas damper 11 on the flue 3 of the gas inlet section of the dust remover 13, and the flue gas damper 11 is in a state of cutting off the flue 3 when the circulating fan 9 is in a starting running state. When the boiler is used, the circulating fan 9 is started, the gas heating device 10 is started, the gas passing through the gas heating device 10 is heated to a set temperature, then the heated gas enters the hearth 1 through one port of the heat preservation channel 8, then flows through the rotors of the flue 3, the water-cooled wall 2, the superheater 5, the reheater 6, the economizer 7 and the air preheater 4, and then flows back to the heat preservation channel 8 from the other port of the heat preservation channel 8, and in the process, the temperature of the rotors of the hearth 1, the flue 3, the water-cooled wall 2, the superheater 5, the reheater 6, the economizer 7 and the air preheater 4 can be kept near the temperature required by normal power generation of the boiler by the gas heated by the gas heating device 10.
As a further improvement of the invention, the air inlet section and the air outlet section of the heat preservation channel 8 are respectively provided with an air door 12, the circulating fan 9 is connected in series on the heat preservation channel 8 between the gas heating device 10 and the flue gas outlet of the air preheater 4, and the circulating fan 9 can enable the hearth 1 to be in a micro negative pressure state.
As a further improvement of the present invention, the negative pressure section of the heat preservation channel 8 is provided with an air inlet, an air inlet air door (not shown in the figure) is arranged at the air inlet, the air circulated in the heat preservation channel 8 is air or air mixed with flue gas, and the air circulated in the heat preservation channel 8 cannot be water vapor. After the circulating fan 9 is started, an air inlet air door is opened, so that the outside air can be supplemented and flows into the negative pressure section of the heat preservation channel 8, and the air pressure in the heat preservation channel 8, the hearth 1 and the flue 3 can be adjusted accordingly.
As a further improvement of the present invention, the above-described gas heating device 10 is an electric heating device or a device for heating a gas by molten salt heat exchange.
As a further improvement of the present invention, a plurality of insulation channel temperature sensors (not shown) for monitoring the gas temperatures at different positions in the insulation channel 8 are arranged in the insulation channel 8;
a plurality of hearth temperature sensors (not shown in the figure) for monitoring temperatures at different positions in the hearth 1 are arranged in the hearth 1;
a plurality of flue temperature sensors for monitoring temperatures at different positions in the flue 3 are arranged in the flue 3.
The invention relates to a thermal power peak regulation quick response boiler which comprises a steam-water system, a coal dust preparation and combustion system, a dust remover and a desulfurizing device, wherein the coal dust preparation and combustion system comprises a hearth 1, the steam-water system comprises a steam drum, a water cooling wall 2, a superheater 5, a reheater 6 and an economizer 7, the hearth 1 is communicated with a flue gas inlet of an air preheater 4 through a flue 3, the hearth 1 is communicated with a hot gas outlet of a gas heating device 10, and when the coal dust preparation and combustion system stops generating operation, gas heated by the gas heating device 10 can be conveyed into the hearth 1, so that the temperature of the hearth 1 is kept near the temperature required by normal power generation. In use, the temperature of the furnace 1 is kept near the temperature required for normal power generation. Therefore, the thermal power peak regulation quick response boiler has the characteristics that the coal-fired power generation boiler can be in a thermal state standby state under the power zero load state, and can be quickly responded and started in the thermal state once the power grid is required to be used, so that the coal-fired power generation boiler can immediately enter the power generation state.
Claims (6)
1. The utility model provides a thermal power peak regulation quick response boiler, including steam-water system, buggy preparation and combustion system, the dust remover, the desulphurization unit, buggy preparation and combustion system include furnace (1), steam-water system includes steam drum, water-cooled wall (2), superheater (5), reheater (6) and economizer (7), furnace (1) communicates with each other with the flue gas import of air preheater (4) through flue (3), characterized by still includes gas heating device (10), after buggy preparation and combustion system stops generating electricity operation, gas heating device (10) can carry the gas that is heated to in furnace (1), let the temperature of furnace (1) keep near the required temperature of normal electricity generation.
2. The rapid response boiler for thermal power peak shaving according to claim 1, wherein the gas heating device (10) is communicated with the middle lower part of the hearth (1) through one port of the heat preservation channel (8), the circulating fan (9) is connected in series on the heat preservation channel (8), the other port of the heat preservation channel (8) is communicated with a flue gas outlet of the air preheater (4), a heat preservation material layer is coated on the outer walls of the heat preservation channel (8) and the circulating fan (9), a rotor of the air preheater (4) is in a rotating state, gas heated by the gas heating device (10) flows through the hearth (1) and the flue (3), the temperature of the hearth (1), the flue (3), the water cooling wall (2), the superheater (5), the reheater (6), the economizer (7) and the rotor of the air preheater (4) are kept at a temperature near the temperature required by normal power generation of the boiler, a throttle (11) is arranged on the flue gas outlet of the air preheater (4) to the flue (3) of the air inlet section of the dust remover, and the flue gas throttle (11) is in a state of being cut off when the circulating fan (9) is started.
3. The rapid response boiler for thermal power peak shaving according to claim 2, wherein air doors (12) are respectively arranged on the air inlet section and the air outlet section of the heat preservation channel (8), the circulating fan (9) is connected in series on the heat preservation channel (8) between the gas heating device (10) and the flue gas outlet of the air preheater (4), and the circulating fan (9) can enable the hearth (1) to be in a micro negative pressure state.
4. A thermal power peak shaving quick response boiler according to claim 3, wherein the negative pressure section of the thermal insulation channel (8) is provided with an air inlet, an air inlet air door is arranged at the air inlet, the gas circulated in the thermal insulation channel (8) is air or air mixed with flue gas, and the gas circulated in the thermal insulation channel (8) cannot be steam.
5. A thermal power peak shaving rapid response boiler according to any one of claims 1 to 4, characterized in that the gas heating means (10) is an electric heating means or a means for heating gas by molten salt heat exchange.
6. The rapid response boiler for thermal power peak shaving according to claim 5, wherein a thermal insulation channel temperature sensor for monitoring the gas temperature in the thermal insulation channel (8) is arranged in the thermal insulation channel (8);
a hearth temperature sensor for monitoring the temperature in the hearth (1) is arranged in the hearth (1);
a flue temperature sensor for monitoring the temperature in the flue (3) is arranged in the flue (3).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310962018.9A CN116839014A (en) | 2023-08-02 | 2023-08-02 | Quick response boiler for thermal power peak regulation |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310962018.9A CN116839014A (en) | 2023-08-02 | 2023-08-02 | Quick response boiler for thermal power peak regulation |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN116839014A true CN116839014A (en) | 2023-10-03 |
Family
ID=88161814
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202310962018.9A Pending CN116839014A (en) | 2023-08-02 | 2023-08-02 | Quick response boiler for thermal power peak regulation |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN116839014A (en) |
-
2023
- 2023-08-02 CN CN202310962018.9A patent/CN116839014A/en active Pending
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