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 PDF

Info

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
change
separator
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
Application number
CN201911126822.3A
Other languages
Chinese (zh)
Inventor
马辉
汪潮洋
马登卿
闫慧博
贾永会
卢晓
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
State Grid Corp of China SGCC
Electric Power Research Institute of State Grid Hebei Electric Power Co Ltd
Original Assignee
State Grid Corp of China SGCC
Electric Power Research Institute of State Grid Hebei Electric Power Co Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by State Grid Corp of China SGCC, Electric Power Research Institute of State Grid Hebei Electric Power Co Ltd filed Critical State Grid Corp of China SGCC
Priority to CN201911126822.3A priority Critical patent/CN110976060A/en
Publication of CN110976060A publication Critical patent/CN110976060A/en
Pending legal-status Critical Current

Links

Images

Classifications

    • BPERFORMING OPERATIONS; TRANSPORTING
    • B02CRUSHING, PULVERISING, OR DISINTEGRATING; PREPARATORY TREATMENT OF GRAIN FOR MILLING
    • B02CCRUSHING, PULVERISING, OR DISINTEGRATING IN GENERAL; MILLING GRAIN
    • B02C25/00Control arrangements specially adapted for crushing or disintegrating
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23NREGULATING OR CONTROLLING COMBUSTION
    • F23N1/00Regulating fuel supply
    • F23N1/002Regulating 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

Dynamic separator adjusting method based on fly ash online monitoring device
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)

1.一种基于飞灰在线监测装置的动态分离器调整方法,其特征在于,直吹式制粉系统的风煤比存在设计的拟合曲线的,当给煤量一定时,一次风量也是确定值,风煤比的变化影响到煤粉细度变化;当前动态分离器的转速调整取决于给煤量大小,当给煤机量增大时,动态分离器转速也相应加快,即动态分离器的转速随着磨煤机给煤量而相应变化;动态分离器实际运行过程中,依据给煤量和动态分离器转速的关系模拟曲线来控制动态分离器转速。1. a dynamic separator adjustment method based on fly ash online monitoring device, it is characterized in that, the air-to-coal ratio of the direct-blown pulverizing system exists the fitting curve of the design, when the coal feeding amount is certain, the primary air amount is also determined. The change of the air-to-coal ratio affects the change of the fineness of the pulverized coal; the current speed adjustment of the dynamic separator depends on the amount of coal fed. The rotating speed of the coal mill changes correspondingly with the coal feeding amount of the coal mill; in the actual operation process of the dynamic separator, the dynamic separator rotating speed is controlled according to the simulation curve of the relationship between the coal feeding amount and the dynamic separator rotating speed. 2.根据权利要求1所述的一种基于飞灰在线监测装置的动态分离器调整方法,其特征在于,制粉系统运行中,在没有制粉系统启停操作时,当风煤比发生变化或者煤质发生变化时,影响到煤粉细度的变化,引入另一个关联参数-在线监测飞灰含碳量,通过试验获得飞灰含碳量变化与动态分离器转速变化的关系模拟曲线,对制定好的给煤量和动态分离器转速的关系模拟曲线进行修正。2 . A method for adjusting a dynamic separator based on an online fly ash monitoring device according to claim 1 , wherein, during the operation of the pulverizing system, when there is no start-stop operation of the pulverizing system, when the air-to-coal ratio changes. 3 . Or when the coal quality changes, which affects the change of the fineness of the pulverized coal, another related parameter is introduced - online monitoring of the carbon content of the fly ash, and the simulation curve of the relationship between the change of the carbon content of the fly ash and the change of the rotational speed of the dynamic separator is obtained through experiments. Correct the simulation curve of the relationship between the coal feeding amount and the dynamic separator speed. 3.根据权利要求2所述的一种基于飞灰在线监测装置的动态分离器调整方法,其特征在于,对制定好的给煤量和动态分离器转速的关系模拟曲线进行修正过程中:当飞灰含碳量升高时,提高动态分离器转速,降低煤粉细度,提高锅炉燃烧效率。3. a kind of dynamic separator adjustment method based on fly ash online monitoring device according to claim 2 is characterized in that, in the process of revising the relationship simulation curve of the formulated coal feed amount and dynamic separator rotational speed: when When the carbon content of fly ash increases, the rotational speed of the dynamic separator is increased, the fineness of pulverized coal is reduced, and the combustion efficiency of the boiler is improved. 4.根据权利要求3所述的一种基于飞灰在线监测装置的动态分离器调整方法,其特征在于,对制定好的给煤量和动态分离器转速的关系模拟曲线进行修正过程中:4. a kind of dynamic separator adjustment method based on fly ash on-line monitoring device according to claim 3 is characterized in that, in the process of revising the relationship simulation curve of the formulated coal feed amount and dynamic separator rotational speed: 当飞灰含碳量降低时,降低动态分离器转速,降低制粉系统单耗。When the carbon content of the fly ash decreases, the speed of the dynamic separator is reduced to reduce the unit consumption of the pulverizing system. 5.根据权利要求4所述的一种基于飞灰在线监测装置的动态分离器调整方法,其特征在于,锅炉稳态运行时,磨煤机给煤量为m1,根据给煤量和动态分离器转速的关系模拟曲线得到动态分离器转速n1。5. A kind of dynamic separator adjustment method based on fly ash on-line monitoring device according to claim 4, it is characterized in that, when the boiler is in steady state operation, the coal feeding amount of the pulverizer is m1, according to the coal feeding amount and dynamic separation The dynamic separator speed n1 is obtained by simulating the relationship between the speed of the separator. 6.根据权利要求1所述的一种基于飞灰在线监测装置的动态分离器调整方法,其特征在于,当给煤量未改变,但风煤比或者煤质发生变化时,导致煤粉细度发生变化,同时飞灰在线监测含碳量也发生变化,此时根据试验获得飞灰含碳量变化与动态分离器转速变化的关系模拟曲线对分离器转速进行修正,得到动态分离器转速n2,从而实现对动态分离器的实时调整。6 . The method for adjusting a dynamic separator based on a fly ash online monitoring device according to claim 1 , wherein when the amount of coal feeding does not change, but the air-to-coal ratio or coal quality changes, the coal powder is finely divided. 7 . At the same time, the carbon content of fly ash online monitoring also changes. At this time, according to the simulation curve of the relationship between the change of fly ash carbon content and the change of dynamic separator speed, the speed of the separator is corrected, and the speed n2 of the dynamic separator is obtained. , so as to realize real-time adjustment of the dynamic separator. 7.根据权利要求1所述的一种基于飞灰在线监测装置的动态分离器调整方法,其特征在于,在确定某个煤粉细度的前提下,通过试验获得给煤量和动态分离器转速的关系模拟曲线。7. A kind of dynamic separator adjustment method based on fly ash on-line monitoring device according to claim 1, is characterized in that, under the premise of determining a certain pulverized coal fineness, the amount of coal fed and the dynamic separator are obtained through experiments Rotational speed relationship simulation curve. 8.根据权利要求2所述的一种基于飞灰在线监测装置的动态分离器调整方法,其特征在于,在锅炉工况不变,不启停制粉系统情况下,通过试验获得飞灰含碳量变化与动态分离器转速变化的关系模拟曲线。8. A method for adjusting a dynamic separator based on an on-line fly ash monitoring device according to claim 2, characterized in that, under the condition that the boiler operating conditions remain unchanged and the pulverizing system is not started and stopped, the fly ash content is obtained through experiments. Simulation curve of the relationship between carbon content change and dynamic separator speed change. 9.根据权利要求6所述的一种基于飞灰在线监测装置的动态分离器调整方法,其特征在于,通过将模拟曲线飞灰含碳量变化与动态分离器转速变化的关系模拟曲线置入DCS逻辑,实现飞灰含碳量变化对动态分离器转速的修正,获得动态分离器转速n2。9. A kind of dynamic separator adjustment method based on fly ash online monitoring device according to claim 6, it is characterized in that, by putting the simulation curve of the relationship between the simulation curve fly ash carbon content change and the dynamic separator rotational speed change into the simulation curve The DCS logic realizes the correction of the rotational speed of the dynamic separator due to the change of the carbon content of the fly ash, and obtains the rotational speed n2 of the dynamic separator. 10.根据权利要求1-9任一项所述的一种基于飞灰在线监测装置的动态分离器调整方法,其特征在于,适用于电厂直吹式制粉系统中的动态分离器的调整方法。10. The method for adjusting a dynamic separator based on an on-line fly ash monitoring device according to any one of claims 1-9, wherein the method is suitable for adjusting a dynamic separator in a direct-blown pulverizing system of a power plant .
CN201911126822.3A 2019-11-18 2019-11-18 Dynamic separator adjusting method based on fly ash online monitoring device Pending CN110976060A (en)

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 (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111515009A (en) * 2020-05-22 2020-08-11 西安热工研究院有限公司 A fully variable frequency pulverizing system and debugging method without minimum coal quantity limit
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 A Wide Load Optimal Control System for Boiler Oxygen
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)

* Cited by examiner, † Cited by third party
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

Patent Citations (5)

* Cited by examiner, † Cited by third party
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)

* Cited by examiner, † Cited by third party
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 (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111515009A (en) * 2020-05-22 2020-08-11 西安热工研究院有限公司 A fully variable frequency pulverizing system and debugging method without minimum coal quantity limit
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 A Wide Load Optimal Control System for Boiler Oxygen

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
CN104801416B (en) Novel coal mill outlet temperature control system and its control method
CN107262261B (en) A kind of coal pulverizer air quantity control method adapting to fired power generating unit Ultra-low load operation
CN103222673B (en) Moisture control method for airflow cut-tobacco drier
CN209452014U (en) Sand making machine feeding volume control system
CN106391286A (en) System and method for controlling fineness of pulverized coal
CN209726247U (en) A kind of station boiler powder Intelligent closed-loop regulating system
CN102147029A (en) Gas source control method of self-adaptive gas water heater
CN206567076U (en) A kind of system controlled for fineness of pulverized coal
CN111503655A (en) Combustion control method and system based on smoke multi-component detection
CN106824481B (en) A kind of stabilization enters to grind the method for powder specific-surface area detection
CN109883015A (en) Fan rotating speed control method and device, storage medium and air conditioner
CN106886150A (en) A kind of whole grinding autocontrol method of open circuit cement joint half and system based on C#
CN110296431A (en) A kind of fineness of pulverized coal automatic regulating system and method based on static separation device
CN104047032A (en) Method for automatically adjusting energy balance of aluminum electrolysis cell
CN110848727B (en) A Regulating Method for Improving Boiler Load Response Rate
CN110926200B (en) Control method, system and application of steam drying device
CN105159059A (en) PID (Proportion Integration Differentiation) controller
CN105022302B (en) Mix featured goods level controlling system and control method
CN110639684A (en) Coordinated optimization control method of semi-final cement grinding system
CN117772390A (en) Method for controlling crushing granularity of 12-14 mu m fine oxidant
CN112624121B (en) Polycrystalline silicon production control system and control method
CN113108307B (en) Primary air control system and control method for reducing hot air throttling loss of coal mill
CN112691784B (en) Coal mill speed control method, device and electronic equipment

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

Application publication date: 20200410

RJ01 Rejection of invention patent application after publication