CN113513767B - Coal mill switching stable combustion device and method for deep peak shaving coal-fired unit - Google Patents
Coal mill switching stable combustion device and method for deep peak shaving coal-fired unit Download PDFInfo
- Publication number
- CN113513767B CN113513767B CN202110812152.1A CN202110812152A CN113513767B CN 113513767 B CN113513767 B CN 113513767B CN 202110812152 A CN202110812152 A CN 202110812152A CN 113513767 B CN113513767 B CN 113513767B
- Authority
- CN
- China
- Prior art keywords
- coal
- fired unit
- mill
- door
- coal mill
- 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.)
- Active
Links
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23N—REGULATING OR CONTROLLING COMBUSTION
- F23N5/00—Systems for controlling combustion
- F23N5/20—Systems for controlling combustion with a time programme acting through electrical means, e.g. using time-delay relays
- F23N5/206—Systems for controlling combustion with a time programme acting through electrical means, e.g. using time-delay relays using electrical or electromechanical means
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23K—FEEDING FUEL TO COMBUSTION APPARATUS
- F23K3/00—Feeding or distributing of lump or pulverulent fuel to combustion apparatus
- F23K3/02—Pneumatic feeding arrangements, i.e. by air blast
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23N—REGULATING OR CONTROLLING COMBUSTION
- F23N1/00—Regulating fuel supply
- F23N1/005—Regulating fuel supply using electrical or electromechanical means
-
- 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
- Y02E20/34—Indirect CO2mitigation, i.e. by acting on non CO2directly related matters of the process, e.g. pre-heating or heat recovery
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Disintegrating Or Milling (AREA)
- Crushing And Grinding (AREA)
Abstract
The invention relates to a switching and stable combustion device and a method for a coal mill of a deep peak shaving coal-fired unit, which are technically characterized in that: a communication coal powder pipeline is established between a coal powder pipeline of a coal mill and a corresponding coal powder pipeline of another coal mill, a communication door is arranged on each coal powder pipeline, the coal mill and an outlet door and a communication door of the coal mill are all connected with a computer control system capable of collecting, calculating and outputting, the computer control system is also connected with a coal-fired unit to collect real-time load of the coal-fired unit, and further the opening of a coal mill switch, the outlet door and the communication door are controlled, so that the coal mill of the deep peak-shaving coal-fired unit is switched to have a stable combustion function. The invention has reasonable design, improves the combustion stability of the hearth of the deep peak-shaving boiler, solves the problem of low-load combustion stability of the double-layer coal mill, solves the problem of vibration abrasion caused by the reduction of the coal quantity when a single coal mill operates, and reduces the loss of equipment while improving the peak-shaving capacity of a unit.
Description
Technical Field
The invention belongs to the technical field of power generation, and relates to a coal-fired unit control device, in particular to a coal mill switching stable combustion device and method for a deep peak-shaving coal-fired unit.
Background
As the installation proportion of new energy is continuously improved, the peak shaving capacity problem of the power system is more remarkable, and the problem of new energy absorption is also improved, so that the deep peak shaving of the thermal generator set becomes a hot topic. The existing coal-fired unit is continuously subjected to flexible transformation, so that the peak regulation capacity of the unit is continuously adapted to the current situation, but a series of problems caused by continuously reducing the output of the unit are scheduled.
Along with the continuous reduction of the power generation load, the coal-fired unit firstly considers the problem of low-load stable combustion, if a single coal mill is adopted, the stable combustion effect is difficult to ensure, if the coal mill is put into combustion supporting, the huge waste of energy is caused, and meanwhile, the risk of unqualified emission indexes is increased; if two coal mills are adopted, the continuously reduced coal quantity is a test for the operation of the current direct-blowing coal mill, the coal quantity is reduced, and the small gap friction and abrasion of the grinding roller can bring greater hidden trouble to the safety of the generator set.
Disclosure of Invention
The invention aims to overcome the defects of the prior art and provide a coal mill switching stable combustion device and method for a deep peak shaving coal-fired unit, which are reasonable in design, stable and reliable and reduce equipment loss.
The invention solves the technical problems in the prior art by adopting the following technical scheme:
the utility model provides a steady combustion device is switched to deep regulating coal-fired unit coal pulverizer, includes two coal pulverizer, and every coal pulverizer includes a coal dust entry, primary air entry and a plurality of coal dust export, and the coal dust export of every coal pulverizer is connected with the furnace through the coal dust pipeline respectively, is equipped with outlet door on every coal dust pipeline, establishes a tie coal dust pipeline between the corresponding coal dust pipeline of one coal pulverizer and another coal pulverizer, is equipped with the contact door on every coal dust pipeline, but coal pulverizer and coal pulverizer's outlet door, contact door all are connected with the computer control system that gathers, operation and export, and this computer control system still is connected with coal-fired unit and gathers coal-fired unit real-time load, and then control coal pulverizer switch and outlet door, the aperture of contact door, realize deep regulating coal-fired unit coal pulverizer and switch steady combustion function.
Further, the number of coal powder outlets of each coal mill is four, the number of coal powder pipelines is four, the number of outlet doors is four, and the number of contact doors is four.
Further, the coal mill is a direct-blowing coal mill.
A method for switching stable combustion devices of coal mills of deep peak shaving coal-fired units comprises the following steps:
step 1, detecting a real-time load P1 of a coal-fired unit by a computer control system, stopping the operation of a second coal mill and closing an outlet door of the second coal mill when the real-time load P1 of the coal-fired unit is reduced to the upper limit of the operation of a single coal mill;
step 2, the first coal mill normally operates, and outlet doors of the coal mill are all opened;
step 3, when the real-time load P1 of the coal-fired unit gradually descends, the computer control system slowly opens the contact door;
step 4, when the real-time load P1 of the coal-fired unit continuously drops to the lower limit of the work of a single coal mill, slowly opening a contact door by a computer control system, wherein the opening of the contact door is consistent and reaches 100%;
step 5, when the real-time load P1 of the coal-fired unit gradually rises, the computer control system slowly closes the contact door;
and 6, starting a second coal mill by the computer control system when the real-time load P1 of the coal-fired unit reaches the upper limit of the work of the single coal mill, and simultaneously starting an outlet door of the second coal mill.
Further, the upper limit of the operation of the single coal mill is as follows: p1= 0.3P0, the lower limit of the operation of the single coal mill is: p1= 0.15P0; p0 is the rated load of the coal-fired unit.
Further, in the step 3, when the real-time load P1 of the coal-fired unit drops to 0.25P0, the computer control system slowly opens each contact door and makes the valve opening of each contact door consistent and reach 25%; when the real-time load P1 of the coal-fired unit is reduced to 0.23P0, the computer control system slowly opens each contact door and enables the valve opening of each contact door to be consistent and reach 50%; when the real-time load P1 of the coal-fired unit is reduced to 0.20P0, the computer control system slowly opens each contact door and enables the valve opening of each contact door to be consistent and reach 75%; and P0 is the rated load of the coal-fired unit.
Further, in the step 5, when the real-time load P1 of the coal-fired unit rises to 0.20P0, the computer control system slowly closes each contact door and makes the valve opening of each contact door consistent and reach 75%; when the real-time load P1 of the coal-fired unit rises to 0.23P0, the computer control system slowly closes each contact door and enables the valve opening of each contact door to be consistent and reach 50%; when the real-time load P1 of the coal-fired unit rises to 0.25P0, the computer control system slowly closes each contact door and enables the valve opening of each contact door to be consistent and reach 25%; when the real-time load P1 of the coal-fired unit rises to 0.27P0, the computer control system completely closes each contact door and enables the valve opening of each contact door to be consistent and reach 0%; and P0 is the rated load of the coal-fired unit.
The invention has the advantages and positive effects that:
the invention has reasonable design, establishes a communication coal powder pipeline between coal powder pipelines of the outlets of the two coal mills, establishes a communication door on the communication coal powder pipeline, detects the real-time load of the coal-fired unit by the computer control system and compares the real-time load with the rated load of the coal-fired unit, controls the coal powder quantity proportion between coal beds by controlling the opening of the outlet door and the communication door of the two coal mills, improves the reliability of stable combustion of a hearth of the deep peak-shaving boiler, solves the reliability problem of low-load stable combustion of the double-layer coal mill, solves the problem of vibration abrasion caused by the reduction of the coal quantity when the single coal mill runs, and reduces the loss of equipment while improving the peak-shaving capacity of the unit.
Drawings
FIG. 1 is a schematic diagram of a switching and stable combustion device of a coal mill of a deep peak shaving coal-fired unit;
FIG. 2 is a schematic diagram of a switching combustion stabilizing device of a conventional dual coal mill;
in the figure, A1, A2, A3 and A4 are four outlet doors of an A coal mill, B1, B2, B3 and B4 are four outlet doors of a B coal mill, A1B1 is a communication coal dust pipeline between the outlet door A1 of the coal mill and the outlet door B1 of the coal mill, A2B2 is a communication coal dust pipeline between the outlet door A2 of the coal mill and the outlet door B2 of the coal mill, A3B3 is a communication coal dust pipeline between the outlet door A3 of the coal mill and the outlet door B3 of the coal mill, A4B4 is a communication coal dust pipeline between the outlet door A4 of the coal mill and the outlet door B4 of the coal mill, AB1 is a communication door on the communication coal dust pipeline A1B1, AB2 is a communication door on the communication coal dust pipeline A2B2, AB3 is a communication door on the communication coal dust pipeline A3B3, and AB4 is a communication door on the communication coal dust pipeline A4B 4.
Detailed Description
Embodiments of the present invention are described in further detail below with reference to the accompanying drawings.
As shown in fig. 2, the existing dual coal mill system comprises two coal mills (a coal mill and B coal mill), the coal mills are direct-blowing coal mills, each coal mill comprises a coal powder inlet, a primary air inlet and a coal powder outlet, four coal powder outlets of each coal mill are respectively connected with a furnace through coal powder pipelines, four outlet doors are respectively arranged on the four coal powder pipelines of each coal mill, and the furnace is controlled to burn stably by controlling the four outlet doors of each coal mill.
The present invention is an improvement in the dual coal pulverizer system of fig. 2. As shown in FIG. 1, the invention provides a switching and stable combustion device of a coal mill of a depth peak-shaving coal-fired unit, which comprises a set of computer control system capable of collecting, calculating and outputting, a coal mill A, a coal mill B, each coal mill comprises a coal powder inlet, a primary air inlet and four coal powder outlets, the four coal powder outlets of each coal mill are respectively connected with a hearth through coal powder pipelines, four outlet doors A1, A2, A3 and A4 are respectively arranged on the four coal powder pipelines of the coal mill A, and four outlet doors B1, B2, B3 and B4 are respectively arranged on the four coal powder pipelines of the coal mill B, and the innovation point is that: establishing a communication coal powder pipeline A1B1 between a coal powder pipeline of a coal mill outlet door A1 and a coal powder pipeline on a coal mill outlet door B1, and installing a communication door AB1 on the communication coal powder pipeline A1B 1; establishing a communication coal powder pipeline A2B2 between a coal powder pipeline of a coal mill outlet door A2 and a coal powder pipeline on a coal mill outlet door B2, and installing a communication door AB2 on the communication coal powder pipeline A2B 2; establishing a communication coal powder pipeline A3B3 between a coal powder pipeline of a coal mill outlet door A3 and a coal powder pipeline on a coal mill outlet door B3, and installing a communication door AB3 on the communication coal powder pipeline A3B 3; a communication coal powder pipeline A4B4 is established between the coal powder pipeline of the coal mill outlet door A4 and the coal powder pipeline on the coal mill outlet door B4, and a communication door AB4 is arranged on the communication coal powder pipeline A4B 4. The computer control system capable of collecting, calculating and outputting is connected with the coal-fired unit to collect real-time load of the unit, and is connected with each coal mill and outlet doors (A1, A2, A3, A4, B1, B2, B3 and B4) and connecting doors (AB 1, AB2, AB3 and AB 4) thereof, and the coal mill switching and combustion stabilizing function of the deep peak-shaving coal-fired unit is realized by controlling the opening of the coal mill switch, the outlet doors and the connecting doors.
Based on the switching and stable combustion device of the coal mill of the deep peak shaving coal-fired unit, the invention also provides a switching and stable combustion method of the coal mill of the deep peak shaving coal-fired unit, which comprises the following steps:
step 1, setting rated load of the coal-fired unit as P0, detecting real-time load P1 of the coal-fired unit by a computer control system, stopping working of the coal mill B when the real-time load P1 of the coal-fired unit is reduced to 0.3P0 (upper limit of working of a single coal mill), and closing four outlet doors B1, B2, B3 and B4 of the coal mill B.
And 2, normally operating the coal mill A, wherein all outlet doors A1, A2, A3 and A4 of the coal mill A are in an open state, and along with the continuous reduction of the real-time load P1 of the coal-fired unit, the pulverized coal quantity of the coal mill A is continuously reduced.
And 3, when the real-time load P1 of the coal-fired unit is reduced to 0.25P0, the computer control system slowly opens the contact doors AB1, AB2, AB3 and AB4, and the valve opening of the four contact doors is consistent and reaches 25%.
And 4, when the real-time load P1 of the coal-fired unit is reduced to 0.23P0, the computer control system slowly increases the opening of the contact doors AB1, AB2, AB3 and AB4, and the valve opening of the four contact doors is consistent and reaches 50%.
And 5, when the real-time load P1 of the coal-fired unit is reduced to 0.20P0, the computer control system slowly increases the opening of the contact doors AB1, AB2, AB3 and AB4, and the valve opening of the four contact doors is consistent and reaches 75%.
And 6, when the real-time load P1 of the coal-fired unit continuously drops to 0.15P0 (the lower limit of the work of a single coal mill), the computer control system slowly opens the contact doors AB1, AB2, AB3 and AB4, and the valve opening of the four contact doors is consistent and reaches 100%.
And 7, when the real-time load P1 of the coal-fired unit rises to 0.20P0, the computer control system slowly closes the contact doors AB1, AB2, AB3 and AB4, and the valve opening of the four contact doors is consistent and reaches 75%.
And 8, when the real-time load P1 of the coal-fired unit rises to 0.23P0, the computer control system slowly closes the contact doors AB1, AB2, AB3 and AB4, and the valve opening of the four contact doors is consistent and reaches 50%.
And 9, when the real-time load P1 of the coal-fired unit rises to 0.25P0, the computer control system slowly closes the contact doors AB1, AB2, AB3 and AB4, and the valve opening of the four contact doors is consistent and reaches 25%.
And 10, when the real-time load P1 of the coal-fired unit rises to 0.27P0, the connecting doors AB1, AB2, AB3 and AB4 are completely closed, and the valve opening of the four connecting doors is consistent and reaches 0%.
And 11, when the real-time load P1 of the coal-fired unit rises to 0.3P0 (the upper limit of the operation of a single coal mill), the computer control system starts the B coal mill and simultaneously starts outlet doors B1, B2, B3 and B4 of the B coal mill.
It should be emphasized that the examples described herein are illustrative rather than limiting, and therefore the invention includes, but is not limited to, the examples described in the detailed description, as other embodiments derived from the technical solutions of the invention by a person skilled in the art are equally within the scope of the invention.
Claims (4)
1. The switching method of the coal mill switching stable combustion device of the deep peak-shaving coal-fired unit comprises two coal mills, each coal mill comprises a coal powder inlet, a primary air inlet and a plurality of coal powder outlets, the coal powder outlets of each coal mill are respectively connected with a hearth through coal powder pipelines, an outlet door is arranged on each coal powder pipeline, a communication coal powder pipeline is established between the coal powder pipeline of one coal mill and the corresponding coal powder pipeline of the other coal mill, a communication door is arranged on each coal powder pipeline, the coal mills and the outlet doors and the communication doors of the coal mills are connected with a computer control system capable of collecting, calculating and outputting, and the computer control system is also connected with the coal-fired unit to collect real-time loads of the coal-fired unit, so as to control the opening of the coal mill switch, the outlet door and the communication door, and realize the coal mill switching stable combustion function of the deep peak-shaving coal-fired unit, and the switching stable combustion device is characterized in that: the switching method comprises the following steps:
step 1, detecting a real-time load P1 of a coal-fired unit by a computer control system, stopping the operation of a second coal mill and closing an outlet door of the second coal mill when the real-time load P1 of the coal-fired unit is reduced to the upper limit of the operation of a single coal mill;
step 2, the first coal mill normally operates, and outlet doors of the coal mill are all opened;
step 3, when the real-time load P1 of the coal-fired unit gradually descends, the computer control system slowly opens the contact door;
step 4, when the real-time load P1 of the coal-fired unit continuously drops to the lower limit of the work of a single coal mill, slowly opening a contact door by a computer control system, wherein the opening of the contact door is consistent and reaches 100%;
step 5, when the real-time load P1 of the coal-fired unit gradually rises, the computer control system slowly closes the contact door;
and 6, starting a second coal mill by the computer control system when the real-time load P1 of the coal-fired unit reaches the upper limit of the work of the single coal mill, and simultaneously starting an outlet door of the second coal mill.
2. The switching method for switching the stable combustion device of the coal mill of the deep peak shaving coal-fired unit according to claim 1 is characterized by comprising the following steps: the upper limit of the work of the single coal mill is as follows: p1= 0.3P0, the lower limit of the operation of the single coal mill is: p1= 0.15P0; p0 is the rated load of the coal-fired unit.
3. The switching method of the coal mill switching stable combustion device of the deep peak shaving coal-fired unit according to claim 1 or 2, wherein the switching method is characterized by comprising the following steps of: in the step 3, when the real-time load P1 of the coal-fired unit is reduced to 0.25P0, the computer control system slowly opens each contact door and enables the valve opening of each contact door to be consistent and reach 25%; when the real-time load P1 of the coal-fired unit is reduced to 0.23P0, the computer control system slowly opens each contact door and enables the valve opening of each contact door to be consistent and reach 50%; when the real-time load P1 of the coal-fired unit is reduced to 0.20P0, the computer control system slowly opens each contact door and enables the valve opening of each contact door to be consistent and reach 75%; and P0 is the rated load of the coal-fired unit.
4. The switching method of the coal mill switching stable combustion device of the deep peak shaving coal-fired unit according to claim 1 or 2, wherein the switching method is characterized by comprising the following steps of: in the step 5, when the real-time load P1 of the coal-fired unit rises to 0.20P0, the computer control system slowly closes each contact door and enables the valve opening of each contact door to be consistent and to reach 75%; when the real-time load P1 of the coal-fired unit rises to 0.23P0, the computer control system slowly closes each contact door and enables the valve opening of each contact door to be consistent and reach 50%; when the real-time load P1 of the coal-fired unit rises to 0.25P0, the computer control system slowly closes each contact door and enables the valve opening of each contact door to be consistent and reach 25%; when the real-time load P1 of the coal-fired unit rises to 0.27P0, the computer control system completely closes each contact door and enables the valve opening of each contact door to be consistent and reach 0%; and P0 is the rated load of the coal-fired unit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110812152.1A CN113513767B (en) | 2021-07-19 | 2021-07-19 | Coal mill switching stable combustion device and method for deep peak shaving coal-fired unit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110812152.1A CN113513767B (en) | 2021-07-19 | 2021-07-19 | Coal mill switching stable combustion device and method for deep peak shaving coal-fired unit |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN113513767A CN113513767A (en) | 2021-10-19 |
| CN113513767B true CN113513767B (en) | 2023-07-28 |
Family
ID=78067495
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110812152.1A Active CN113513767B (en) | 2021-07-19 | 2021-07-19 | Coal mill switching stable combustion device and method for deep peak shaving coal-fired unit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN113513767B (en) |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| ATE111587T1 (en) * | 1988-07-20 | 1994-09-15 | Vaillant Gmbh | METHOD OF CONTROLLING AND MONITORING A FUEL HEATED APPLIANCE USING AT LEAST A MICROCOMPUTER SYSTEM AND DEVICE FOR CARRYING OUT THE METHOD. |
| JP4093495B2 (en) * | 2006-03-23 | 2008-06-04 | カワサキプラントシステムズ株式会社 | Small scale boiler with different fuels |
| JP5092114B2 (en) * | 2006-09-11 | 2012-12-05 | 中国電力株式会社 | In-furnace fluidity management method for fluidized media accompanying coal type switching in fluidized bed boiler |
| CN102494333B (en) * | 2011-11-14 | 2014-09-03 | 上海锅炉厂有限公司 | Anthracite-combusted single fire ball four-corner direct current burner |
| CN107606603A (en) * | 2017-10-09 | 2018-01-19 | 上海锅炉厂有限公司 | A kind of combustion system for the combustion of pulverized-coal fired boiler ultra-low load steady |
-
2021
- 2021-07-19 CN CN202110812152.1A patent/CN113513767B/en active Active
Also Published As
| Publication number | Publication date |
|---|---|
| CN113513767A (en) | 2021-10-19 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN103047670B (en) | Direct blowing type double-inlet and double-outlet steel ball grinding energy conservation optimization system and method thereof | |
| CN104235819A (en) | Control method for parallel operation of steam-driven induced draft fan and electric induced draft fan of thermal power generating unit | |
| CN113513767B (en) | Coal mill switching stable combustion device and method for deep peak shaving coal-fired unit | |
| CN114135891A (en) | Flue gas heat storage system for stabilizing inlet flue gas parameters of waste heat boiler | |
| CN106423526A (en) | Intelligent control method of steel ball coal mill wind system and module | |
| CN213611944U (en) | Be suitable for powder process system of high moisture coal kind | |
| CN111734505A (en) | Supercritical high-back-pressure steam turbine heat supply system and heat supply method | |
| CN204851334U (en) | Intelligent natural gas pipe network pressure can power generation facility | |
| CN217725799U (en) | Boiler powder process system | |
| CN109904875B (en) | Micro-grid energy management method containing fuel cell power generation device | |
| CN110671158A (en) | High-pressure cylinder air pre-warming and quick-cooling system and adjusting method thereof | |
| CN113405086B (en) | Steam mixing system for realizing denitration and temperature raising and adjusting method thereof | |
| CN212319677U (en) | Wide-load denitration and stable combustion system for auxiliary coal-fired unit | |
| CN111140863A (en) | Flue gas passage system capable of meeting low-load denitration of adjacent furnaces and enabling flues to be mutually standby | |
| CN107528330B (en) | Power grid frequency modulation system based on voltage reduction refrigeration unit for thermal power plant | |
| CN204992612U (en) | Double -pipeline ventilation air methane power generation system | |
| CN211925801U (en) | Flue gas passage system capable of meeting low-load denitration of adjacent furnaces and enabling flues to be mutually standby | |
| CN215929620U (en) | One drags second plasma fan heater system | |
| CN209909166U (en) | Public sealed air system of fast coal pulverizer in two stoves of thermal power factory | |
| CN115013800B (en) | Automatic control method for drum water level under FCB working condition of bypass-free circulating fluidized bed unit | |
| CN110067757B (en) | Steam-electricity dual-drive control system and control method based on induced draft fan | |
| CN212927963U (en) | Supercritical high-back-pressure steam turbine heating system | |
| CN112564101B (en) | Control method for external electricity purchase in starting and stopping process of unit | |
| CN208918606U (en) | A kind of system with the fixed heat of electricity | |
| CN215637111U (en) | Steam blending system for realizing denitration and temperature raising |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | 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 |