CN115095992A - Sealed wind intelligent heating device of direct-fired pulverizing system - Google Patents
Sealed wind intelligent heating device of direct-fired pulverizing system Download PDFInfo
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- CN115095992A CN115095992A CN202210798880.6A CN202210798880A CN115095992A CN 115095992 A CN115095992 A CN 115095992A CN 202210798880 A CN202210798880 A CN 202210798880A CN 115095992 A CN115095992 A CN 115095992A
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- 238000010298 pulverizing process Methods 0.000 title claims abstract description 40
- 238000010438 heat treatment Methods 0.000 title claims abstract description 22
- 238000007789 sealing Methods 0.000 claims abstract description 67
- 238000007664 blowing Methods 0.000 claims abstract description 7
- 238000000034 method Methods 0.000 claims abstract description 6
- 239000000843 powder Substances 0.000 claims description 17
- 238000009423 ventilation Methods 0.000 claims description 5
- 238000004891 communication Methods 0.000 claims description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 2
- 238000001035 drying Methods 0.000 abstract description 9
- 238000001514 detection method Methods 0.000 abstract description 8
- 230000001105 regulatory effect Effects 0.000 abstract description 5
- 230000001276 controlling effect Effects 0.000 abstract description 3
- 239000003245 coal Substances 0.000 description 61
- 238000002485 combustion reaction Methods 0.000 description 11
- 238000002156 mixing Methods 0.000 description 6
- 238000013461 design Methods 0.000 description 4
- 239000007789 gas Substances 0.000 description 3
- 238000000227 grinding Methods 0.000 description 3
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000003780 insertion Methods 0.000 description 2
- 230000037431 insertion Effects 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- 239000001301 oxygen Substances 0.000 description 2
- 229910052760 oxygen Inorganic materials 0.000 description 2
- 238000010248 power generation Methods 0.000 description 2
- 239000000779 smoke Substances 0.000 description 2
- 239000002817 coal dust Substances 0.000 description 1
- 230000003111 delayed effect Effects 0.000 description 1
- 239000003344 environmental pollutant Substances 0.000 description 1
- 239000010687 lubricating oil Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000003921 oil Substances 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 231100000719 pollutant Toxicity 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
- 230000000630 rising effect Effects 0.000 description 1
- 230000002269 spontaneous effect Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
Images
Classifications
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- 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
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23K—FEEDING FUEL TO COMBUSTION APPARATUS
- F23K1/00—Preparation of lump or pulverulent fuel in readiness for delivery to combustion apparatus
- F23K1/04—Heating fuel prior to delivery to combustion apparatus
-
- 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
- F24—HEATING; RANGES; VENTILATING
- F24H—FLUID HEATERS, e.g. WATER OR AIR HEATERS, HAVING HEAT-GENERATING MEANS, e.g. HEAT PUMPS, IN GENERAL
- F24H15/00—Control of fluid heaters
- F24H15/30—Control of fluid heaters characterised by control outputs; characterised by the components to be controlled
- F24H15/305—Control of valves
-
- 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
- F24H15/00—Control of fluid heaters
- F24H15/30—Control of fluid heaters characterised by control outputs; characterised by the components to be controlled
- F24H15/345—Control of fans, e.g. on-off control
-
- 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
- F24H9/18—Arrangement or mounting of grates or heating means
- F24H9/1854—Arrangement or mounting of grates or heating means for air heaters
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F26—DRYING
- F26B—DRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
- F26B21/00—Arrangements or duct systems, e.g. in combination with pallet boxes, for supplying and controlling air or gases for drying solid materials or objects
- F26B21/001—Drying-air generating units, e.g. movable, independent of drying enclosure
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F26—DRYING
- F26B—DRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
- F26B21/00—Arrangements or duct systems, e.g. in combination with pallet boxes, for supplying and controlling air or gases for drying solid materials or objects
- F26B21/004—Nozzle assemblies; Air knives; Air distributors; Blow boxes
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)
- Drying Of Solid Materials (AREA)
Abstract
The invention provides a sealing air intelligent heating device of a direct-blowing pulverizing system, which comprises a sealing fan and an outlet air channel, wherein the sealing fan is arranged at the front end of the outlet air channel, a sealing air heater is arranged in the outlet air channel, a sealing air temperature detection device is arranged at an outlet of the outlet air channel, a hot air control valve for controlling the air quantity entering the sealing air heater is also arranged in the outlet air channel, and the hot air control valve and the sealing air temperature detection device are both connected with a distributed control system. The invention heats the sealing fan by arranging the sealing air heater in the outlet air duct, controls the hot air control valve to regulate and control the air quantity by the distributed control system, and controls the opening of the regulating valve to realize automatic adjustment and control by the deviation operation calculation of the temperature set value and the actual value. The method and the device have the advantages that the drying output of the pulverizing system and the output of the pulverizing system are improved, the power consumption rate of the pulverizing system is reduced, the output of a unit and the running economy of the unit are improved, and the safety risk is reduced.
Description
Technical Field
The invention relates to the technical field of thermal generator set equipment, in particular to a sealing air intelligent heating device of a direct-blowing pulverizing system.
Background
The coal blending of the coal of the thermal power generating unit is lower than the coal of the design coal type, so as to reduce the power generation cost, and the ash content and the moisture content of the coal are greatly increased along with the rising of the blending ratio lower than the design coal type, so that the drying output of the coal pulverizing system is reduced, the output of the whole coal pulverizing system is influenced, and the output of the unit is influenced. The fire coal of the thermal power generating unit generally adopts a medium-speed coal mill primary fan positive pressure direct-fired pulverizing system, each coal mill is provided with a layer of combustor of a boiler, 2 sealing air fans are arranged, and one air fan runs and the other air fan is standby. The coal mill completes the grinding, drying and conveying of the fire coal. The primary air and the sealing air dry and convey the coal and provide oxygen required by combustion of the volatile components of the coal. The primary air source is taken from the outdoor, and one path of the primary air source is heated to hot air through equipment such as a heater, an air preheater and the like; the other path directly enters the coal mill to adjust the outlet temperature of the coal mill. The two paths of air are finally mixed and then enter a coal mill, and carry coal dust to enter a powder pipe through a separator and finally enter a boiler burner.
The sealing air is taken from a cold air box of a primary air blower, the temperature is about 0-25 ℃, the sealing air quantity of each coal mill is 18t/h, and the sealing air quantity accounts for 15-25% of the total air quantity of each pulverizing system. After being pressurized by a sealing fan, the coal enters a coal feeder and a coal pulverizer. The coal mill sealing air has the function of sealing the coal mill body to prevent air powder from leaking outside, and the sealing of the lower frame body of the coal mill and the oil seal of the grinding roller prevents dirty gas from reaching the coal powder and preventing the coal powder from leaking into the lubricating oil of the grinding roller. The coal feeder is mainly used for pressing coal powder in a coal mill, so that the coal powder is prevented from entering the coal feeder, the coal powder accumulated in the coal feeder is prevented from spontaneous combustion, and the sealing of internal rotating parts is damaged. Along with the increase of the blending combustion amount of non-design coal types, the moisture of the blended and combusted coal types is larger than that of the design coal types, so that the drying output of the coal mill is insufficient. When the blending combustion amount is large, the outlet temperature of the coal mill is low, and the primary air quantity needs to be increased to control the outlet temperature of the coal mill, so that the pulverized coal particles become large. The incomplete combustion loss of the mechanical machinery of the boiler is increased, the combustion is delayed, the exhaust gas temperature is increased, the exhaust gas loss of the boiler is increased, and the boiler efficiency is reduced.
Disclosure of Invention
The invention aims to provide an intelligent sealing air heating device for a direct-blowing pulverizing system, which is used for improving drying output of the pulverizing system and output of the pulverizing system, reducing power consumption rate of the pulverizing system, improving output of a unit and running economy of the unit and reducing safety risk.
According to an object of the invention, the invention provides an intelligent heating device for sealing air of a direct-blowing pulverizing system, which comprises a sealing fan and an outlet air duct, wherein the sealing fan is arranged at the front end of the outlet air duct, a sealing air heater is arranged in the outlet air duct, a sealing air temperature detection device is arranged at an outlet of the outlet air duct, a hot air control valve for controlling the air quantity entering the sealing air heater is further arranged in the outlet air duct, and the hot air control valve and the sealing air temperature detection device are both connected with a distributed control system.
Further, a heat source of the sealed air heater is derived from plant steam, and the drain water of the sealed air heater is recycled to the thermodynamic system.
Further, the sealing air heater can heat the sealing air from 0-25 ℃ to 50 ℃.
Further, the sealing air heater adjusts the electrically operated gate, and the adjustment electrically operated gate is connected with the distributed control system.
Further, the hot air control valve comprises an inlet insertion plate arranged on the air inlet side of the sealed air heater and an outlet insertion plate arranged on the air outlet side of the sealed air heater.
Furthermore, the inlet plugboard and the outlet plugboard are electric plugboards, and the inlet plugboard and the outlet plugboard are both connected with the distributed control system.
Furthermore, the outlet air duct is connected in parallel with a bypass air duct, an air inlet end and an air outlet end of the bypass air duct are respectively communicated with the outlet air duct, the air inlet end of the bypass air duct is positioned on the front side of the sealed air heater, and the air outlet end of the bypass air duct is positioned on the rear side of the sealed air heater.
Furthermore, a bypass electric plug board is arranged in the bypass air duct and connected with the distributed control system.
Further, the ventilation cross section of the bypass duct and the ventilation cross section of the outlet duct are the same.
Furthermore, the front end of the outlet air duct is provided with two sealing fans which are respectively connected with the outlet air duct.
According to the technical scheme, the sealing fan is heated by the sealing air heater arranged in the outlet air duct, the air quantity is controlled and regulated by the hot air control valve through the distributed control system, and the opening degree of the regulating valve is controlled through deviation operation calculation of a temperature set value and an actual value so as to realize automatic adjustment and control. The coal mill output can be satisfied, the air quantity of the coal mill is reduced, the fineness of coal powder at the outlet of the coal mill is reduced, and the coal powder combustion is facilitated. The incomplete combustion loss and the smoke exhaust loss of the boiler machinery are reduced. The method and the device have the advantages of improving the drying output of the pulverizing system, improving the output of the pulverizing system, reducing the power consumption rate of the pulverizing system, improving the output of the unit and the running economy of the unit, and reducing the safety risk.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and other drawings can be obtained by those skilled in the art without creative efforts.
FIG. 1 is a schematic structural diagram of an embodiment of the present invention;
fig. 2 is a schematic structural diagram of a steam control valve of a sealed air heater according to an embodiment of the present invention.
In the figure: 1. an outlet duct; 2. sealing the fan; 3. a fan outlet plugboard; 4. a sealed air heater; 5. an inlet regulating electric door; 6. an outlet regulating electric door; 7. an inlet inserting plate; 8. an outlet plugboard; 9. a bypass duct; 10. a bypass electric plugboard; 11. sealing wind temperature detection device.
Detailed Description
The technical solutions of the present invention will be described clearly and completely with reference to the following embodiments, and it should be understood that the described embodiments are some, but not all, embodiments of the present invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", and the like, indicate orientations or positional relationships based on those shown in the drawings, merely for convenience of description and simplification of the description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed in a particular orientation, and be operated, and thus, are not to be construed as limiting the present invention.
Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, features defined as "first" and "second" may explicitly or implicitly include one or more of the described features. In the description of the present invention, "a plurality" means two or more unless specifically defined otherwise. Furthermore, the terms "mounted," "connected," and "connected" are to be construed broadly and may, for example, be fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.
Example 1
As shown in figures 1 and 2 of the drawings,
the utility model provides a direct-fired formula powder process system seals wind intelligence heating device, includes export wind channel 1, and the front end in export wind channel 1 is equipped with two sealed fans 2, and two sealed fans 2 are connected with export wind channel 1 respectively. A fan outlet inserting plate 3 is respectively arranged between the two sealed fans 2 and the outlet air duct 1, the communication between the sealed fans 2 and the outlet air duct 1 can be controlled through the fan outlet inserting plate 3, and one working platform can be ensured to be standby.
The outlet air duct 1 is internally provided with a sealed air heater 4, the heat source of the sealed air heater 4 is derived from factory steam, the steam inlet of the sealed air heater 4 is provided with an inlet adjusting electric door 5, the steam outlet of the sealed air heater 4 is provided with an outlet adjusting electric door 6, and the inlet adjusting electric door 5 and the outlet adjusting electric door 6 are both connected with a distributed control system. The steam inlet amount of the sealed air heater 4 can be adjusted through the inlet adjusting electric door 5 and the outlet adjusting electric door 6 to control the heating capacity. The drainage of the sealing air heater 4 is recycled to a thermodynamic system, and the sealing air heater 4 can heat the sealing air from 0-25 ℃ to 50 ℃.
The outlet of the outlet air duct 1 is provided with a sealed air temperature detection device 11, the sealed air temperature detection device 11 is connected with a distributed control system, a hot air control valve used for controlling the air quantity entering the sealed air heater 4 is further arranged in the outlet air duct 1, the hot air control valve comprises an inlet inserting plate 7 arranged on the air inlet side of the sealed air heater 4 and an outlet inserting plate 8 arranged on the air outlet side of the sealed air heater 4, the inlet inserting plate 7 and the outlet inserting plate 8 are electric inserting plates, and the inlet inserting plate 7 and the outlet inserting plate 8 are both connected with the distributed control system. The sealing air temperature detection device 11 is used for detecting the temperature and transmitting a temperature signal to the distributed control system, and the distributed control system regulates and controls the inlet inserting plate 7 and the outlet inserting plate 8 to adjust the heating degree of the sealing air heater 4 to the sealing air.
The outlet air duct 1 is connected in parallel with a bypass air duct 9, and the ventilation section of the bypass air duct 9 is the same as that of the outlet air duct 1. The air inlet end and the air outlet end of the bypass air duct 9 are respectively communicated with the outlet air duct 1, the air inlet end of the bypass air duct 9 is located on the front side of the sealed air heater 4, the air outlet end of the bypass air duct 9 is located on the rear side of the sealed air heater 4, a bypass electric inserting plate 10 is arranged in the bypass air duct 9, and the bypass electric inserting plate 10 is connected with the distributed control system. The bypass air duct 9 is controlled to be opened or closed by the bypass electric plug board 10, so that the function of mutually switching the outlet air duct 1 and the bypass air duct 9 during the fault period can be realized.
In the embodiment, the temperature of the sealing air is increased from 0-25 ℃ to 50 ℃ through the sealing air heater 4, the air volume of the sealing air is 18t/h and accounts for 15-25% of the total air volume of each pulverizing system, and the working coal volume of the coal mill is increased from 30t/h to 35 t/h. Specific heat according to sealing wind is 1.00KJ/(Kg.K), and specific heat of coal is 1.00-1.26 KJ/(Kg.K). The drying output of the pulverizing system, the comprehensive output of the pulverizing system and the economic performance of the unit are improved. The heating sealing air is transferred to the heating coal powder, so that the temperature of the air-powder mixture at the outlet of the coal mill can be averagely increased by 5-10 ℃. The output of the powder preparation system is improved by 15-20%. In this embodiment, the sealing air temperature signal at the outlet of the sealing air heater 4 and the steam inlet of the heater are adjusted to the electric door and transmitted to the Distributed Control System (DCS), and the opening of the electric door is controlled to realize automatic adjustment and control by the deviation operation calculation of the temperature set value and the actual value.
In the embodiment, the temperature of the sealing air of the coal mill is increased, so that the air-powder mixture at the outlet of the coal mill can be increased by 5-10 ℃, and the output of the pulverizing system is increased by 15-20%. The coal mill output can be satisfied, the air quantity of the coal mill is reduced, the fineness of coal powder at the outlet of the coal mill is reduced, and the coal powder combustion is facilitated. The incomplete combustion loss and the smoke exhaust loss of the boiler machinery can be reduced. The primary air rate of the boiler is reduced, the secondary air quantity is ensured to be sufficient, and the flame disturbance and control in the boiler are enhanced. Through the blending of the over-fire air, the oxygen content in a combustion area can be reduced, and the generation of pollutants NOx is inhibited. The method and the device have the advantages that the drying output of the pulverizing system and the output of the pulverizing system are improved, the power consumption rate of the pulverizing system is reduced, the output of a unit and the running economy of the unit are improved, and the safety risk is reduced.
According to the invention, the steam inlet quantity of the heating device is automatically adjusted through the air temperature feedback of the outlet of the sealing air heater under the control of a DCS (distributed control system), so that the air temperature setting and the automatic control of the outlet of the sealing air heater are realized; the method and the device have the advantages of improving the drying output of the pulverizing system, improving the output of the pulverizing system, reducing the power consumption rate of the pulverizing system, improving the output of the unit and the running economy of the unit, and reducing the safety risk. The problems of the coal pulverizing system output reduction, the coal pulverizing unit consumption increase, the unit output reduction, the unit economy reduction, the safety risk increase and the like caused by the mixing of the burning inferior coal in the thermal power generation industry are solved.
Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit the same; while the invention has been described in detail and with reference to the foregoing embodiments, it will be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; and the modifications or the substitutions do not make the essence of the corresponding technical solutions depart from the scope of the technical solutions of the embodiments of the present invention.
Claims (10)
1. The utility model provides a direct-blowing formula powder process system seals wind intelligence heating device, a serial communication port, including sealed fan and export wind channel, the front end in export wind channel is equipped with sealed fan, be equipped with sealed air heater in the export wind channel, the export in export wind channel is equipped with sealed wind temperature-detecting device, still be equipped with in the export wind channel and be used for control to get into the hot-blast control valve of sealed air heater amount of wind, the hot-blast control valve with sealed wind temperature-detecting device all is connected with distributed control system.
2. The intelligent heating device for the sealing air of the direct-fired pulverizing system of claim 1, wherein the heat source of the sealing air heater is steam, and the drain water of the sealing air heater is recovered to a thermodynamic system.
3. The intelligent heating device for sealing air in a direct-fired pulverizing system of claim 1, wherein the sealing air heater can heat the sealing air from 0-25 ℃ to 50 ℃.
4. The intelligent heating device for sealed air in a direct-fired pulverizing system as claimed in claim 2, wherein the sealed air heater is provided with an adjusting electric door, and the adjusting electric door is connected with the decentralized control system.
5. The intelligent sealed air heating device for a direct-fired pulverizing system as claimed in claim 1, wherein the hot air control valve comprises an inlet insert plate disposed at the air inlet side of the sealed air heater and an outlet insert plate disposed at the air outlet side of the sealed air heater.
6. The intelligent sealing air heating device for a direct-fired pulverizing system of claim 5, wherein the inlet plugboard and the outlet plugboard are electric plugboards, and the inlet plugboard and the outlet plugboard are both connected with the distributed control system.
7. The intelligent heating device for the sealing air of the direct-blowing pulverizing system of claim 1, wherein the outlet air duct is connected in parallel with a bypass air duct, an air inlet end and an air outlet end of the bypass air duct are respectively communicated with the outlet air duct, the air inlet end of the bypass air duct is located at the front side of the sealing air heater, and the air outlet end of the bypass air duct is located at the rear side of the sealing air heater.
8. The intelligent heating device for the sealing air of the direct-fired pulverizing system of claim 7, wherein a bypass electric plugboard is arranged in the bypass air duct, and the bypass electric plugboard is connected with the distributed control system.
9. The sealed air intelligent heating device for the direct-fired pulverizing system of claim 7, wherein the ventilation cross section of the bypass air duct and the ventilation cross section of the outlet air duct are the same.
10. The intelligent heating device for the sealing air of the direct-fired pulverizing system of claim 1, wherein two sealing fans are arranged at the front end of the outlet air duct, and the two sealing fans are respectively connected with the outlet air duct.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210798880.6A CN115095992A (en) | 2022-07-06 | 2022-07-06 | Sealed wind intelligent heating device of direct-fired pulverizing system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210798880.6A CN115095992A (en) | 2022-07-06 | 2022-07-06 | Sealed wind intelligent heating device of direct-fired pulverizing system |
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| Publication Number | Publication Date |
|---|---|
| CN115095992A true CN115095992A (en) | 2022-09-23 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202210798880.6A Pending CN115095992A (en) | 2022-07-06 | 2022-07-06 | Sealed wind intelligent heating device of direct-fired pulverizing system |
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| CN (1) | CN115095992A (en) |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201344550Y (en) * | 2008-12-23 | 2009-11-11 | 国电环境保护研究院 | Damper seal air system of desulfurization flue gas pipeline |
| CN103925607A (en) * | 2014-04-16 | 2014-07-16 | 西安西热锅炉环保工程有限公司 | Positive-pressure direct-firing pulverizing system based on segmented temperature control and control method thereof |
| CN105091546A (en) * | 2014-05-20 | 2015-11-25 | 天华化工机械及自动化研究设计院有限公司 | Generator set high-water-content and low-heating-value lignite drying and water recycling method and device |
| CN106705117A (en) * | 2017-01-22 | 2017-05-24 | 华北电力科学研究院有限责任公司 | Primary air system of thermal power plant and start and stop control method of primary air system |
-
2022
- 2022-07-06 CN CN202210798880.6A patent/CN115095992A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201344550Y (en) * | 2008-12-23 | 2009-11-11 | 国电环境保护研究院 | Damper seal air system of desulfurization flue gas pipeline |
| CN103925607A (en) * | 2014-04-16 | 2014-07-16 | 西安西热锅炉环保工程有限公司 | Positive-pressure direct-firing pulverizing system based on segmented temperature control and control method thereof |
| CN105091546A (en) * | 2014-05-20 | 2015-11-25 | 天华化工机械及自动化研究设计院有限公司 | Generator set high-water-content and low-heating-value lignite drying and water recycling method and device |
| CN106705117A (en) * | 2017-01-22 | 2017-05-24 | 华北电力科学研究院有限责任公司 | Primary air system of thermal power plant and start and stop control method of primary air system |
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Application publication date: 20220923 |