CN110976060A - Dynamic separator adjusting method based on fly ash online monitoring device - Google Patents
Dynamic separator adjusting method based on fly ash online monitoring device Download PDFInfo
- Publication number
- CN110976060A CN110976060A CN201911126822.3A CN201911126822A CN110976060A CN 110976060 A CN110976060 A CN 110976060A CN 201911126822 A CN201911126822 A CN 201911126822A CN 110976060 A CN110976060 A CN 110976060A
- Authority
- CN
- China
- Prior art keywords
- dynamic separator
- coal
- fly ash
- rotating speed
- change
- 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
Images
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B02—CRUSHING, PULVERISING, OR DISINTEGRATING; PREPARATORY TREATMENT OF GRAIN FOR MILLING
- B02C—CRUSHING, PULVERISING, OR DISINTEGRATING IN GENERAL; MILLING GRAIN
- B02C25/00—Control arrangements specially adapted for crushing or disintegrating
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23N—REGULATING OR CONTROLLING COMBUSTION
- F23N1/00—Regulating fuel supply
- F23N1/002—Regulating fuel supply using electronic means
Landscapes
- Engineering & Computer Science (AREA)
- Food Science & Technology (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Regulation And Control Of Combustion (AREA)
- Crushing And Grinding (AREA)
Abstract
The invention relates to a dynamic separator adjusting method based on a fly ash online monitoring device.A designed fitting curve exists in the air-coal ratio of a direct-blowing coal pulverizing system, when the coal feeding amount is fixed, the primary air volume is also a determined value, and the change of the air-coal ratio influences the change of the fineness of pulverized coal; the rotation speed of the dynamic separator is adjusted according to the coal feeding quantity, and when the coal feeder quantity is increased, the rotation speed of the dynamic separator is correspondingly increased, namely the rotation speed of the dynamic separator is correspondingly changed along with the coal feeding quantity of the coal mill; and in the actual operation process of the dynamic separator, controlling the rotating speed of the dynamic separator according to a relation simulation curve of the coal feeding amount and the rotating speed of the dynamic separator. The invention monitors the change of the carbon content of the boiler fly ash in real time through the fly ash on-line monitoring device, corrects the rotating speed of the dynamic separator in real time, better controls the fineness of the pulverized coal, improves the combustion efficiency of the boiler or reduces the unit consumption of a powder making system, can enable the boiler to better organize combustion, and achieves the purpose of improving the thermal efficiency of the boiler.
Description
Technical Field
The invention belongs to the field of thermal power plants, relates to a dynamic separator adjusting method in a direct-fired pulverizing system of a power plant, and particularly relates to a dynamic separator adjusting method based on a fly ash online monitoring device.
Background
The direct-blowing coal pulverizing system is widely applied to large-scale thermal power plants, wherein a large part of the coal pulverizing systems are provided with dynamic separators, and coal dust with qualified coal dust fineness is prepared by adjusting the rotating speed of the dynamic separators, but the current coal dust fineness can not be monitored in real time, so that the dynamic separators can not adjust the rotating speed in real time, and the accurate coal dust fineness can not be ensured. The rotation speed of the current dynamic separator is adjusted according to the coal feeding quantity, and when the coal feeding quantity of the coal feeder is increased, the rotation speed of the dynamic separator is correspondingly increased, namely the rotation speed of the dynamic separator is correspondingly changed along with the coal feeding quantity of the coal mill. In the actual operation process, because the coal powder fineness can not be monitored on line, a simulation curve of the relationship between the coal supply quantity and the rotating speed of the dynamic separator is obtained through experiment exploration only on the premise of ensuring the coal powder fineness, and then the rotating speed of the separator is automatically controlled according to the simulation curve of the relationship, so that the coal powder with qualified coal powder fineness is prepared.
Disclosure of Invention
The invention is suitable for a direct-fired pulverizing system provided with a dynamic separator in a thermal power plant, and on the basis of the existing dynamic separator rotating speed control method, the change of the carbon content of the boiler fly ash is monitored in real time by a fly ash online monitoring device, the rotating speed of the dynamic separator is corrected in real time, the fineness of the pulverized coal is better controlled, the combustion efficiency of the boiler is improved, or the unit consumption of the pulverizing system is reduced.
The technical scheme of the invention is as follows:
a dynamic separator adjusting method based on a fly ash on-line monitoring device is characterized in that a designed fitting curve exists in the air-coal ratio of a direct-blowing pulverizing system, when the coal feeding amount is fixed, the primary air volume is also a determined value, and the change of the air-coal ratio influences the change of the fineness of pulverized coal; the rotation speed of the dynamic separator is adjusted according to the coal feeding quantity, and when the coal feeder quantity is increased, the rotation speed of the dynamic separator is correspondingly increased, namely the rotation speed of the dynamic separator is correspondingly changed along with the coal feeding quantity of the coal mill; and in the actual operation process of the dynamic separator, controlling the rotating speed of the dynamic separator according to a relation simulation curve of the coal feeding amount and the rotating speed of the dynamic separator.
Preferably, when the coal pulverizing system is not started or stopped, when the air-coal ratio or the coal quality is changed, the change of the fineness of the pulverized coal is influenced, another related parameter is introduced, the carbon content of the fly ash is monitored on line, a relation simulation curve of the carbon content change of the fly ash and the rotation speed change of the dynamic separator is obtained through a test, and the formulated relation simulation curve of the coal feeding quantity and the rotation speed of the dynamic separator is corrected.
Preferably, in the process of correcting the formulated relation simulation curve of the coal feeding quantity and the rotating speed of the dynamic separator: when the carbon content of the fly ash is increased, the rotating speed of the dynamic separator is increased, the fineness of the pulverized coal is reduced, and the combustion efficiency of the boiler is improved.
Preferably, in the process of correcting the formulated relation simulation curve of the coal feeding quantity and the rotating speed of the dynamic separator:
when the carbon content of fly ash is reduced, the rotating speed of the dynamic separator is reduced, and the unit consumption of a pulverizing system is reduced.
Preferably, when the boiler operates in a steady state, the coal feeding amount of the coal mill is m1, and the rotating speed n1 of the dynamic separator is obtained according to a relation simulation curve of the coal feeding amount and the rotating speed of the dynamic separator.
Preferably, when the coal feeding amount is not changed but the air-coal ratio or the coal quality is changed, the fineness of the pulverized coal is changed, the carbon content of the fly ash on-line monitoring is changed, and the rotating speed of the separator is corrected by a simulation curve of the relationship between the carbon content change of the fly ash and the rotating speed change of the dynamic separator according to the relationship obtained by tests to obtain the rotating speed n2 of the dynamic separator, so that the dynamic separator is adjusted in real time.
Preferably, on the premise of determining the fineness of a certain pulverized coal, a relation simulation curve of the coal feeding amount and the rotating speed of the dynamic separator is obtained through tests.
Preferably, under the conditions that the working condition of the boiler is not changed and the powder making system is not started or stopped, a relation simulation curve of the carbon content change of the fly ash and the rotating speed change of the dynamic separator is obtained through tests.
Preferably, the relation simulation curve of the fly ash carbon content change and the dynamic separator rotating speed change of the simulation curve is placed into DCS logic, so that the fly ash carbon content change is corrected for the rotating speed of the dynamic separator, and the rotating speed n2 of the dynamic separator is obtained.
Preferably, the method is suitable for adjusting the dynamic separator in the direct-fired pulverizing system of the power plant.
The invention has the beneficial effects that:
the invention monitors the change of the carbon content of the boiler fly ash in real time through the fly ash on-line monitoring device, corrects the rotating speed of the dynamic separator in real time, better controls the fineness of the pulverized coal, improves the combustion efficiency of the boiler or reduces the unit consumption of a powder making system, can enable the boiler to better organize combustion, and achieves the purpose of improving the thermal efficiency of the boiler.
The following points are specifically shown:
1. the change of the carbon content of the fly ash is monitored by the fly ash on-line monitoring device, and the rotating speed of the dynamic separator is corrected and controlled, so that the fineness of the produced pulverized coal is more reasonable, the combustion efficiency of a boiler is improved, and the unit consumption of a pulverizing system is reduced;
2. the change of the carbon content of the fly ash is monitored in real time through the fly ash online device, and the rotating speed of the dynamic separator can be corrected in real time, so that the fineness of the pulverized coal is changed in real time, and the method has effectiveness;
3. the method of the invention obtains the curve of the carbon content change of the fly ash and the change of the rotating speed of the dynamic separator through tests, and the curve is put into DCS automatic control logic to realize.
Drawings
Fig. 1 is a diagram of an implementation process of the present invention.
FIG. 2 is a graph of a simulation of the relationship between coal feed and dynamic separator rotational speed in accordance with the present invention.
FIG. 3 is a graph showing the relationship between the carbon content change of fly ash and the rotation speed change of the dynamic separator.
Detailed Description
Technical solutions in the embodiments of the present application are clearly and completely described, and it is obvious that the described embodiments are only a part of the embodiments of the present application, and not all embodiments. The following description of at least one exemplary embodiment is merely illustrative in nature and is in no way intended to limit the application, its application, or uses. 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 application.
It is noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of example embodiments according to the present application. As used herein, the singular forms "a", "an" and "the" are intended to include the plural forms as well, and it should be understood that when the terms "comprises" and/or "comprising" are used in this specification, they specify the presence of stated features, steps, operations, devices, components, and/or combinations thereof, unless the context clearly indicates otherwise.
The relative arrangement of the components and steps, the numerical expressions, and numerical values set forth in these embodiments do not limit the scope of the present application unless specifically stated otherwise. Meanwhile, it should be understood that the sizes of the respective portions shown in the drawings are not drawn in an actual proportional relationship for the convenience of description. Techniques, methods, and apparatus known to those of ordinary skill in the relevant art may not be discussed in detail but are intended to be part of the specification where appropriate. In all examples shown and discussed herein, any particular value should be construed as merely illustrative, and not limiting. Thus, other examples of the exemplary embodiments may have different values. It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, further discussion thereof is not required in subsequent figures.
In the description of the present application, it is to be understood that the orientation or positional relationship indicated by the directional terms such as "front, rear, upper, lower, left, right", "lateral, vertical, horizontal" and "top, bottom", etc., are generally based on the orientation or positional relationship shown in the drawings, and are used for convenience of description and simplicity of description only, and in the case of not making a reverse description, these directional terms do not indicate and imply that the device or element being referred to must have a particular orientation or be constructed and operated in a particular orientation, and therefore, should not be considered as limiting the scope of the present application; the terms "inner and outer" refer to the inner and outer relative to the profile of the respective component itself.
Spatially relative terms, such as "above … …," "above … …," "above … …," "above," and the like, may be used herein for ease of description to describe one device or feature's spatial relationship to another device or feature as illustrated in the figures. It will be understood that the spatially relative terms are intended to encompass different orientations of the device in use or operation in addition to the orientation depicted in the figures. For example, if a device in the figures is turned over, devices described as "above" or "on" other devices or configurations would then be oriented "below" or "under" the other devices or configurations. Thus, the exemplary term "above … …" can include both an orientation of "above … …" and "below … …". The device may be otherwise variously oriented (rotated 90 degrees or at other orientations) and the spatially relative descriptors used herein interpreted accordingly.
It should be noted that the terms "first", "second", and the like are used to define the components, and are only used for convenience of distinguishing the corresponding components, and the terms have no special meanings unless otherwise stated, and therefore, the scope of protection of the present application is not to be construed as being limited.
The technical solution and structure of the present invention will be described in further detail with reference to the accompanying drawings.
In the following description, for purposes of explanation and not limitation, specific details are set forth, such as particular system structures, techniques, etc. in order to provide a thorough understanding of the embodiments of the invention. It will be apparent, however, to one skilled in the art that the present invention may be practiced in other embodiments that depart from these specific details. In other instances, detailed descriptions of well-known systems, devices, circuits, and methods are omitted so as not to obscure the description of the present invention with unnecessary detail.
In order to explain the technical means of the present invention, the following description will be given by way of specific examples.
Example 1
The air-coal ratio of the direct-fired pulverizing system has a designed fitting curve, when the coal feeding amount is fixed, the primary air volume is also a determined value, and the change of the air-coal ratio can influence the change of the fineness of the pulverized coal. The rotating speed of the current dynamic separator is adjusted according to the coal feeding quantity, and when the coal feeder quantity is increased, the rotating speed of the dynamic separator is correspondingly increased, namely the rotating speed of the dynamic separator is correspondingly changed along with the coal feeding quantity of the coal mill. In the actual operation process of the dynamic separator, on the premise of determining certain coal powder fineness, a relation simulation curve (figure 2) of coal feeding quantity and the rotating speed of the dynamic separator is obtained through experiments, and then the rotating speed of the dynamic separator is automatically controlled according to the curve.
In the operation of an actual coal pulverizing system, when the start-stop operation of the coal pulverizing system is not performed, the change of the fineness of the coal powder can be influenced when the air-coal ratio or the coal quality is changed, and at the moment, when the rotating speed of the separator operates according to a formulated curve 1, the fineness of the coal powder cannot be guaranteed or the unit consumption of the coal pulverizing system is increased. Introducing another related parameter, namely monitoring the carbon content of the fly ash on line, obtaining a relation simulation curve (figure 3) of the change of the rotating speed of the dynamic separator and the change of the carbon content of the fly ash through a test under the conditions that the working condition of the boiler is unchanged and a powder making system is not started or stopped, and correcting the formulated simulation curve (figure 2) of the rotating speed and the coal feeding amount of the dynamic separator; when the carbon content of fly ash is increased, the rotating speed of the dynamic separator is increased, the fineness of pulverized coal is reduced, the combustion efficiency of a boiler is improved, and when the carbon content of fly ash is reduced, the rotating speed of the dynamic separator is reduced, so that the unit consumption of a powder making system is reduced.
When the boiler operates in a steady state, the coal feeding amount of the coal mill is m1, the rotating speed n1 of the dynamic separator is obtained according to a curve (figure 2), when the coal feeding amount is not changed but the air-coal ratio or the coal quality is changed, the fineness of the coal powder is changed, meanwhile, the carbon content of the fly ash on-line monitoring is also changed, the rotating speed of the separator is corrected according to a simulation curve graph (figure 3) of the carbon content change of the fly ash and the rotating speed change of the dynamic separator, and the rotating speed n2 of the dynamic separator is obtained, so that the real-time adjustment of the dynamic separator is realized.
The method specifically comprises the following four steps:
1. on the premise of determining the fineness of certain pulverized coal, a simulation curve (figure 2) of the relation between the rotating speed of the dynamic separator and the coal feeding amount is obtained through experiments.
2. Under the condition that the working condition of the boiler is not changed, a simulation curve of the relationship between the carbon content change of the fly ash and the rotating speed change of the dynamic separator is obtained through experiments (figure 3).
3. The simulation curve (figure 3) is put into DCS logic to realize the correction of the rotating speed of the dynamic separator by the carbon content change of the fly ash, and the rotating speed n2 of the dynamic separator is obtained.
4. The implementation process is shown in fig. 1.
The invention monitors the change of the carbon content of the boiler fly ash in real time through the fly ash on-line monitoring device, corrects the rotating speed of the dynamic separator in real time, better controls the fineness of the pulverized coal, improves the combustion efficiency of the boiler or reduces the unit consumption of a powder making system, can enable the boiler to better organize combustion, and achieves the purpose of improving the thermal efficiency of the boiler.
The following points are specifically shown:
1. the change of the carbon content of the fly ash is monitored by the fly ash on-line monitoring device, and the rotating speed of the dynamic separator is corrected and controlled, so that the fineness of the produced pulverized coal is more reasonable, the combustion efficiency of a boiler is improved, and the unit consumption of a pulverizing system is reduced;
2. the change of the carbon content of the fly ash is monitored in real time through the fly ash online device, and the rotating speed of the dynamic separator can be corrected in real time, so that the fineness of the pulverized coal is changed in real time, and the method has effectiveness;
3. the method of the invention obtains the curve of the carbon content change of the fly ash and the change of the rotating speed of the dynamic separator through tests, and the curve is put into DCS automatic control logic to realize.
Example 2
The air-coal ratio of the direct-fired pulverizing system has a designed fitting curve, when the coal feeding amount is fixed, the primary air volume is also a determined value, and the change of the air-coal ratio can influence the change of the fineness of the pulverized coal. The rotation speed of the current dynamic separator is adjusted according to the coal feeding quantity, and when the coal feeder quantity is reduced, the rotation speed of the dynamic separator is correspondingly reduced, namely the rotation speed of the dynamic separator is correspondingly changed along with the coal feeding quantity of the coal mill. In the actual operation process of the dynamic separator, on the premise of determining certain coal powder fineness, a relation simulation curve (figure 2) of coal feeding quantity and the rotating speed of the dynamic separator is obtained through experiments, and then the rotating speed of the dynamic separator is automatically controlled according to the curve.
In the operation of an actual coal pulverizing system, when the start-stop operation of the coal pulverizing system is not performed, the change of the fineness of the coal powder can be influenced when the air-coal ratio or the coal quality is changed, and at the moment, when the rotating speed of the separator operates according to a formulated curve 1, the fineness of the coal powder cannot be guaranteed or the unit consumption of the coal pulverizing system is increased. Introducing another related parameter, namely monitoring the carbon content of the fly ash on line, obtaining a relation simulation curve (figure 3) of the change of the rotating speed of the dynamic separator and the change of the carbon content of the fly ash through a test under the conditions that the working condition of the boiler is unchanged and a powder making system is not started or stopped, and correcting the formulated simulation curve (figure 2) of the rotating speed and the coal feeding amount of the dynamic separator; when the carbon content of fly ash is increased, the rotating speed of the dynamic separator is increased, the fineness of pulverized coal is reduced, the combustion efficiency of a boiler is improved, and when the carbon content of fly ash is reduced, the rotating speed of the dynamic separator is reduced, so that the unit consumption of a powder making system is reduced.
When the boiler operates in a steady state, the coal feeding amount of the coal mill is m1, the rotating speed n1 of the dynamic separator is obtained according to a curve (figure 2), when the coal feeding amount is not changed but the air-coal ratio or the coal quality is changed, the fineness of the coal powder is changed, meanwhile, the carbon content of the fly ash on-line monitoring is also changed, the rotating speed of the separator is corrected according to a simulation curve graph (figure 3) of the carbon content change of the fly ash and the rotating speed change of the dynamic separator, and the rotating speed n2 of the dynamic separator is obtained, so that the real-time adjustment of the dynamic separator is realized.
The method specifically comprises the following four steps:
1. on the premise of determining the fineness of certain pulverized coal, a simulation curve (figure 2) of the relation between the rotating speed of the dynamic separator and the coal feeding amount is obtained through experiments.
2. Under the condition that the working condition of the boiler is not changed, a simulation curve of the relationship between the carbon content change of the fly ash and the rotating speed change of the dynamic separator is obtained through experiments (figure 3).
3. The simulation curve (figure 3) is put into DCS logic to realize the correction of the rotating speed of the dynamic separator by the carbon content change of the fly ash, and the rotating speed n2 of the dynamic separator is obtained.
4. The implementation process is shown in fig. 1.
The invention monitors the change of the carbon content of the boiler fly ash in real time through the fly ash on-line monitoring device, corrects the rotating speed of the dynamic separator in real time, better controls the fineness of the pulverized coal, improves the combustion efficiency of the boiler or reduces the unit consumption of a powder making system, can enable the boiler to better organize combustion, and achieves the purpose of improving the thermal efficiency of the boiler.
The following points are specifically shown:
1. the change of the carbon content of the fly ash is monitored by the fly ash on-line monitoring device, and the rotating speed of the dynamic separator is corrected and controlled, so that the fineness of the produced pulverized coal is more reasonable, the combustion efficiency of a boiler is improved, and the unit consumption of a pulverizing system is reduced;
2. the change of the carbon content of the fly ash is monitored in real time through the fly ash online device, and the rotating speed of the dynamic separator can be corrected in real time, so that the fineness of the pulverized coal is changed in real time, and the method has effectiveness;
3. the method of the invention obtains the curve of the carbon content change of the fly ash and the change of the rotating speed of the dynamic separator through tests, and the curve is put into DCS automatic control logic to realize.
The invention is suitable for a direct-fired pulverizing system provided with a dynamic separator in a thermal power plant, and on the basis of the existing dynamic separator rotating speed control method, the change of the carbon content of the boiler fly ash is monitored in real time by a fly ash online monitoring device, the rotating speed of the dynamic separator is corrected in real time, the fineness of the pulverized coal is better controlled, the combustion efficiency of the boiler is improved, or the unit consumption of the pulverizing system is reduced.
Claims (10)
1. A dynamic separator adjusting method based on a fly ash online monitoring device is characterized in that a designed fitting curve exists in the air-coal ratio of a direct-blowing coal pulverizing system, when the coal feeding amount is fixed, the primary air volume is also a determined value, and the change of the air-coal ratio influences the change of the fineness of pulverized coal; the rotation speed of the dynamic separator is adjusted according to the coal feeding quantity, and when the coal feeder quantity is increased, the rotation speed of the dynamic separator is correspondingly increased, namely the rotation speed of the dynamic separator is correspondingly changed along with the coal feeding quantity of the coal mill; and in the actual operation process of the dynamic separator, controlling the rotating speed of the dynamic separator according to a relation simulation curve of the coal feeding amount and the rotating speed of the dynamic separator.
2. The method for adjusting the dynamic separator based on the fly ash online monitoring device according to claim 1, wherein in the operation of a coal pulverizing system, when the start-stop operation of the coal pulverizing system is not performed, when the air-coal ratio or the coal quality changes, the change of the fineness of the coal powder is influenced, another associated parameter, namely the fly ash carbon content, is introduced, a relation simulation curve of the fly ash carbon content change and the dynamic separator rotation speed change is obtained through a test, and the formulated relation simulation curve of the coal feeding amount and the dynamic separator rotation speed is corrected.
3. The method for adjusting the dynamic separator based on the fly ash online monitoring device according to claim 2, wherein in the process of correcting the established relationship simulation curve between the coal feeding amount and the rotating speed of the dynamic separator: when the carbon content of the fly ash is increased, the rotating speed of the dynamic separator is increased, the fineness of the pulverized coal is reduced, and the combustion efficiency of the boiler is improved.
4. The method for adjusting the dynamic separator based on the fly ash online monitoring device according to claim 3, wherein in the process of correcting the established relationship simulation curve between the coal feeding amount and the rotating speed of the dynamic separator:
when the carbon content of fly ash is reduced, the rotating speed of the dynamic separator is reduced, and the unit consumption of a pulverizing system is reduced.
5. The method for adjusting the dynamic separator based on the fly ash online monitoring device according to claim 4, wherein the coal feeding amount of the coal mill is m1 when the boiler is in steady-state operation, and the rotating speed n1 of the dynamic separator is obtained according to a relation simulation curve of the coal feeding amount and the rotating speed of the dynamic separator.
6. The method for adjusting the dynamic separator based on the fly ash online monitoring device according to claim 1, wherein when the coal supply amount is not changed but the air-coal ratio or the coal quality is changed, the fineness of the pulverized coal is changed, and the carbon content of the fly ash online monitoring is also changed, and at the same time, the rotating speed of the separator is corrected by a simulation curve according to the relation between the change of the carbon content of the fly ash and the change of the rotating speed of the dynamic separator, so that the rotating speed n2 of the dynamic separator is obtained, and the real-time adjustment of the dynamic separator is realized.
7. The method for adjusting the dynamic separator based on the fly ash online monitoring device according to claim 1, characterized in that a relationship simulation curve of the coal feeding amount and the rotating speed of the dynamic separator is obtained through experiments on the premise of determining the fineness of a certain pulverized coal.
8. The method for adjusting the dynamic separator based on the fly ash online monitoring device according to claim 2, wherein a simulation curve of the relationship between the change of the carbon content of the fly ash and the change of the rotating speed of the dynamic separator is obtained through tests under the conditions that the working condition of a boiler is unchanged and a powder making system is not started or stopped.
9. The method for adjusting the dynamic separator based on the fly ash online monitoring device according to claim 6, wherein the modification of the fly ash carbon content change to the rotating speed of the dynamic separator is realized by putting a simulation curve of the relationship between the fly ash carbon content change and the rotating speed change of the dynamic separator into DCS logic, so as to obtain the rotating speed n2 of the dynamic separator.
10. The method for adjusting the dynamic separator based on the fly ash online monitoring device according to any one of claims 1 to 9, wherein the method is suitable for adjusting the dynamic separator in a direct-fired pulverizing system of a power plant.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911126822.3A CN110976060A (en) | 2019-11-18 | 2019-11-18 | Dynamic separator adjusting method based on fly ash online monitoring device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911126822.3A CN110976060A (en) | 2019-11-18 | 2019-11-18 | Dynamic separator adjusting method based on fly ash online monitoring device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN110976060A true CN110976060A (en) | 2020-04-10 |
Family
ID=70084768
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201911126822.3A Pending CN110976060A (en) | 2019-11-18 | 2019-11-18 | Dynamic separator adjusting method based on fly ash online monitoring device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110976060A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112871429A (en) * | 2021-02-02 | 2021-06-01 | 浙江浙能技术研究院有限公司 | Rare earth motor control method of coal mill |
| CN113834093A (en) * | 2021-11-01 | 2021-12-24 | 西安热工研究院有限公司 | Boiler oxygen content wide load optimization control system |
| CN114178036A (en) * | 2021-10-15 | 2022-03-15 | 广东红海湾发电有限公司 | Inlet primary air volume and primary air pressure control method of coal mill |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20100326337A1 (en) * | 2008-10-31 | 2010-12-30 | Mitsubishi Heavy Industries, Ltd. | Control device of coal pulverizer |
| CN206567076U (en) * | 2016-08-31 | 2017-10-20 | 珠海市华远自动化科技有限公司 | A kind of system controlled for fineness of pulverized coal |
| CN109058969A (en) * | 2018-06-28 | 2018-12-21 | 国电南京电力试验研究有限公司 | A kind of ultra supercritical double reheat tower boiler progress control method |
| CN109174423A (en) * | 2018-09-18 | 2019-01-11 | 国电龙源节能技术有限公司 | Pulverizer outlet temperature control system and method based on fineness of pulverized coal on-line tuning |
| CN109442463A (en) * | 2018-09-19 | 2019-03-08 | 安徽华电六安电厂有限公司 | A kind of coal pulverizer fineness of pulverized coal adjusting method |
-
2019
- 2019-11-18 CN CN201911126822.3A patent/CN110976060A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20100326337A1 (en) * | 2008-10-31 | 2010-12-30 | Mitsubishi Heavy Industries, Ltd. | Control device of coal pulverizer |
| CN206567076U (en) * | 2016-08-31 | 2017-10-20 | 珠海市华远自动化科技有限公司 | A kind of system controlled for fineness of pulverized coal |
| CN109058969A (en) * | 2018-06-28 | 2018-12-21 | 国电南京电力试验研究有限公司 | A kind of ultra supercritical double reheat tower boiler progress control method |
| CN109174423A (en) * | 2018-09-18 | 2019-01-11 | 国电龙源节能技术有限公司 | Pulverizer outlet temperature control system and method based on fineness of pulverized coal on-line tuning |
| CN109442463A (en) * | 2018-09-19 | 2019-03-08 | 安徽华电六安电厂有限公司 | A kind of coal pulverizer fineness of pulverized coal adjusting method |
Non-Patent Citations (4)
| Title |
|---|
| 周文台: "配双进双出磨煤机的W火焰锅炉的燃烧调整试验研究", 《锅炉技术》 * |
| 李力: "中速磨煤机动态分离器技术在实际运行中的应用", 《今日科苑》 * |
| 王向阳: "《锅炉设备与运行》", 31 May 2013 * |
| 纪同明: "《锅炉设备运行 试用本》", 31 July 1983 * |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112871429A (en) * | 2021-02-02 | 2021-06-01 | 浙江浙能技术研究院有限公司 | Rare earth motor control method of coal mill |
| CN112871429B (en) * | 2021-02-02 | 2022-05-31 | 浙江浙能技术研究院有限公司 | Rare earth motor control method of coal mill |
| CN114178036A (en) * | 2021-10-15 | 2022-03-15 | 广东红海湾发电有限公司 | Inlet primary air volume and primary air pressure control method of coal mill |
| CN113834093A (en) * | 2021-11-01 | 2021-12-24 | 西安热工研究院有限公司 | Boiler oxygen content wide load optimization control system |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN110976060A (en) | Dynamic separator adjusting method based on fly ash online monitoring device | |
| CN109174423B (en) | Coal mill outlet temperature control system and method based on-line adjustment of pulverized coal fineness | |
| CN103222673B (en) | Moisture control method for airflow cut-tobacco drier | |
| CN111142377B (en) | Fuel quantity feedforward control method of coordinated control system considering operation state of coal mill | |
| CN106391286A (en) | System and method for controlling fineness of pulverized coal | |
| CN106801887A (en) | A kind of anti-interference energy-saving fired power generating unit powder control system | |
| CN103100477A (en) | Method and device for automatic adjustment of fineness of pulverized coal for medium speed coal mill | |
| CN104459636B (en) | Multi-radar antenna coordination control method | |
| CN105977988B (en) | Improve the active reactive control method for coordinating of new energy collection region voltage security | |
| CN206567076U (en) | A kind of system controlled for fineness of pulverized coal | |
| CN109201213A (en) | A kind of crusher feeding control method and system | |
| CN108954286B (en) | A kind of calculation method and system of boiler input dynamic assisted instruction | |
| CN101239414A (en) | Gas shielded arc welding method for improving electrical arc self-regulation performance and preventing welding stick from burning back | |
| CN204883446U (en) | Permanent magnetism AC motor's inside dehydrating unit | |
| CN207596730U (en) | Electric slurry glass dust production system | |
| CN112624121B (en) | Polycrystalline silicon production control system and control method | |
| CN106196161A (en) | A kind of boiler load control design case method based on continuous variable primary air pressure | |
| CN103915860A (en) | Reactive power control method for electric generator | |
| CN212309836U (en) | Mill pressure control system | |
| CN110848727B (en) | Adjusting method for improving boiler load response rate | |
| CN211726097U (en) | High-precision particle size powder processing system | |
| CN103673615A (en) | Energy saving method and device for main exhaust fan | |
| CN208115757U (en) | A kind of aniline dropping temperature automatic control system | |
| CN105642406B (en) | A kind of wind guiding component and air ducting for vertical mill | |
| CN110332561B (en) | Control method, device and equipment for multi-stage coal feeder and readable storage medium |
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 | ||
| RJ01 | Rejection of invention patent application after publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20200410 |