CN106391286A - System and method for controlling fineness of pulverized coal - Google Patents
System and method for controlling fineness of pulverized coal Download PDFInfo
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- CN106391286A CN106391286A CN201610775401.3A CN201610775401A CN106391286A CN 106391286 A CN106391286 A CN 106391286A CN 201610775401 A CN201610775401 A CN 201610775401A CN 106391286 A CN106391286 A CN 106391286A
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- fineness
- pulverized coal
- coal
- separator
- pulverized
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- 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
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- Food Science & Technology (AREA)
- Disintegrating Or Milling (AREA)
Abstract
The invention relates to a system and method for controlling fineness of pulverized coal. The method comprises the steps that the parameter of coal supply amount of a coal mill is acquired, a separator is adjusted according to the parameter of the coal supply amount, and the fineness of the pulverized coal is controlled within a required range; the fineness of the pulverized coal is measured on line; and the separator is automatically regulated by serving the measured value of the fineness of the pulverized coal as feedback data so that the fineness of the pulverized coal can be controlled within the required range. According to the system and method, due to the fact that the change tendency of the fineness of the pulverized coal at an outlet of the coal mill is analyzed on line, the rotating speed of the separator is precisely adjusted on line according to the fineness of the pulverized coal and the change tendency, the fineness of the pulverized coal is controlled within the preset range in a closed-loop manner, and stable output of the fineness of the pulverized coal and uniformity is achieved.
Description
Technical field
The present invention relates to milling equipment technical field is and in particular to a kind of system and method for fineness of pulverized coal control.
Background technology
Coal pulverizer is one of important subsidiary engine in thermal power plant, and its operation conditions directly affects the safety economy fortune of boiler
OK, pulverizer capacity and fineness of pulverized coal directly affect the combustion position of boiler, and its mill processes and coal dust separation process are impacts
One of deciding factor finally exerted oneself with fineness of pulverized coal of coal pulverizer.
Coal dust is thinner, and ash content carbon is lower, and efficiency of combustion is higher, but powder power consumption processed is bigger simultaneously；Therefore, there is an optimal coal
Powder fineness, now the heat loss due to incomplete combustion of unit and powder power consumption summation processed reach minimum.Therefore, no matter under what operating mode,
The fineness of pulverized coal of coal pulverizer all remains desired value and is just conducive to the economy of coal dust, burns completely, but at present in the overwhelming majority
In power plant, fineness of pulverized coal is not consistent with the runing adjustment of boiler, which results in economic loss to a certain extent.
For this reason, it is necessary to provide a kind of method of fineness of pulverized coal control or system, to be controlled to fineness of pulverized coal adjusting,
Fineness of pulverized coal is made to meet boiler operatiopn needs.The Chinese patent open source literature of Publication No. " 103100477A " discloses in one kind
The method that speed coal mill automatically adjusts fineness of pulverized coal, the method is the parameter by obtaining coal-supplying amount, then according to certain rule
To adjust separator, to control the fineness of coal dust.But the fineness of pulverized coal of coal pulverizer, except being had outside the Pass with coal-supplying amount, is also turned by separator
Cage rotating speed（Or baffle opening）, ventilation, the impact of the factor such as grinding roller thrust, separator rotating speed（Or baffle opening）If can not be with
With these factor adjust automaticallies, may result in fineness of pulverized coal and be among fluctuation it is impossible to meet the requirement of economical combustion.
Content of the invention
The present invention is directed to the problems referred to above, it is desirable to provide a kind of system and method for fineness of pulverized coal control, with to coal-grinding
The variation tendency that machine exports fineness of pulverized coal carries out on-line analysis, and then realizes accurately being adjusted online according to fineness of pulverized coal and variation tendency
Whole separator rotating speed, by fineness of pulverized coal closed-loop control in default scope, realizes the stable output of fineness of pulverized coal and uniformity.
Technical scheme is as follows：
A kind of method for fineness of pulverized coal control, it includes as follows：
Obtain the parameter of coal pulverizer coal-supplying amount；
On-line analysis, measurement are carried out to fineness of pulverized coal, draws fineness of pulverized coal or its variation tendency；
Parameter according to described coal-supplying amount adjusting separator, using the fineness of pulverized coal that drawn or its variation tendency as feedback coefficient
According to adjust separator further, realize the closed-loop control of fineness of pulverized coal, so that fineness of pulverized coal is controlled in claimed range；
Wherein, the method to adjust separator using the fineness of pulverized coal that drawn or its variation tendency further as feedback data is
It is performed as follows regulation:
When surveyed fineness of pulverized coal value is more than the claimed range of fineness of pulverized coal or fineness of pulverized coal value has the trend becoming big, automatically subtract
The aperture of little static separation device baffle plate or the rotating speed increasing dynamic separator motor；It is less than fineness of pulverized coal in surveyed fineness of pulverized coal value
Claimed range or fineness of pulverized coal value when there is the trend diminishing, be automatically increased the aperture of static separation device baffle plate or reduce dynamic
The rotating speed of rejector motor.
A kind of system for fineness of pulverized coal control, it includes parameter acquisition module, analysis and processing module, adjusts control
Module, fineness of pulverized coal on-line measurement module；
Wherein, parameter acquisition module：For power plant's operational factor acquisition system, for obtaining the parameter of coal pulverizer coal-supplying amount；
Adjust control module：For being adjusted, control the fineness of coal dust to separator；
Fineness of pulverized coal on-line measurement module：For on-line analysis, measurement are carried out to fineness of pulverized coal, draw fineness of pulverized coal or its change
Trend；
Analysis and processing module：Connecting quantity acquisition module, regulation control module and fineness of pulverized coal on-line measurement module respectively, its root
Parameter according to described coal-supplying amount to adjust separator, to be entered using the fineness of pulverized coal being drawn or its variation tendency as feedback data
One step section separator, realizes the closed-loop control of fineness of pulverized coal, so that fineness of pulverized coal is controlled in claimed range.
Beneficial effects of the present invention are embodied in：It is divided online by the variation tendency that coal pulverizer is exported with fineness of pulverized coal
Analysis, and then realize accurately adjusting separator rotating speed online according to fineness of pulverized coal and variation tendency, fineness of pulverized coal closed-loop control is existed
In default scope, realize the stable output of fineness of pulverized coal and uniformity.
Brief description
The present invention is further illustrated below in conjunction with the accompanying drawings.
Fig. 1 is the functional frame composition of fineness of pulverized coal control system.
Fig. 2 is the schematic flow sheet of fineness of pulverized coal control method.
Specific embodiment
Accompanying drawing is the specific embodiment of the present invention.
As shown in figure 1, the heretofore described system controlling for fineness of pulverized coal includes parameter acquisition module, analysis
Processing module, regulation control module and fineness of pulverized coal on-line measurement module；Wherein, parameter acquisition module：For power plant's operational factor
Acquisition system, for obtaining the parameter of coal pulverizer coal-supplying amount；Adjust control module：For being adjusted to separator, control coal
The fineness of powder；Fineness of pulverized coal on-line measurement module：For on-line analysis, measurement are carried out to fineness of pulverized coal, draw fineness of pulverized coal or
Its variation tendency；Analysis and processing module：Connecting quantity acquisition module, regulation control module and fineness of pulverized coal on-line measurement mould respectively
Block, it adjusts separator according to the parameter of described coal-supplying amount, using the fineness of pulverized coal that drawn or its variation tendency as feedback
Data to adjust separator further, realizes the closed-loop control of fineness of pulverized coal, so that fineness of pulverized coal is controlled in claimed range.
As shown in Fig. 2 the heretofore described method controlling for fineness of pulverized coal include as follows：
Obtain the parameter of coal pulverizer coal-supplying amount；
On-line analysis, measurement are carried out to fineness of pulverized coal, draws fineness of pulverized coal or its variation tendency；
Parameter according to described coal-supplying amount adjusting separator, using the fineness of pulverized coal that drawn or its variation tendency as feedback coefficient
According to adjust separator further, realize the closed-loop control of fineness of pulverized coal, so that fineness of pulverized coal is controlled in claimed range；
Wherein, the method to adjust separator using the fineness of pulverized coal that drawn or its variation tendency further as feedback data is
It is performed as follows regulation:
When surveyed fineness of pulverized coal value is more than the claimed range of fineness of pulverized coal or fineness of pulverized coal value has the trend becoming big, automatically subtract
The aperture of little static separation device baffle plate or the rotating speed increasing dynamic separator motor；It is less than fineness of pulverized coal in surveyed fineness of pulverized coal value
Claimed range or fineness of pulverized coal value when there is the trend diminishing, be automatically increased the aperture of static separation device baffle plate or reduce dynamic
The rotating speed of rejector motor.
Above-mentioned on-line analysis on fineness of pulverized coal, measurement are to affect the various factors of fineness of pulverized coal as modeling data base
Plinth, with the simulation model of pulverized coal preparation system and coal dust piece-rate system for model basis, using many data vector analog algorithm, to coal dust
Fineness carries out on-line analysis and prediction.
The line Measurement Technique principle of fineness of pulverized coal：Coal using advanced technologies such as simulation modeling, Multi-Sensor Data Fusions
Powder fineness variation tendency online real-time soft measuring technology, the impact separator rotating cage rotating speed of fineness of pulverized coal, grinding roller grinding forces, gives
In coal amount, mill, the factor such as wind speed sets up the emulation data processing model of a fineness of pulverized coal trend analysis, in conjunction with fineness of pulverized coal
Test result and Adjustment effect value of feedback on-line amending technology, realize the on-line analysis of fineness of pulverized coal and its variation tendency, be coal dust
The on-line control of fineness and separator rotating speed On-line Control, provide regulation foundation.
Claims (3)
1. a kind of method for fineness of pulverized coal control is it is characterised in that include as follows：
Obtain the parameter of coal pulverizer coal-supplying amount；
On-line analysis, measurement are carried out to fineness of pulverized coal, draws fineness of pulverized coal or its variation tendency；
Parameter according to described coal-supplying amount adjusting separator, using the fineness of pulverized coal that drawn or its variation tendency as feedback coefficient
According to adjust separator further, realize the closed-loop control of fineness of pulverized coal, so that fineness of pulverized coal is controlled in claimed range；
Wherein, the method to adjust separator using the fineness of pulverized coal that drawn or its variation tendency further as feedback data is
It is performed as follows regulation:
When surveyed fineness of pulverized coal value is more than the claimed range of fineness of pulverized coal or fineness of pulverized coal value has the trend becoming big, automatically subtract
The aperture of little static separation device baffle plate or the rotating speed increasing dynamic separator motor；It is less than fineness of pulverized coal in surveyed fineness of pulverized coal value
Claimed range or fineness of pulverized coal value when there is the trend diminishing, be automatically increased the aperture of static separation device baffle plate or reduce dynamic
The rotating speed of rejector motor.
2. according to claim 1 be used for fineness of pulverized coal control method it is characterised in that：To fineness of pulverized coal online point
Analysis, measurement are to affect the various factors of fineness of pulverized coal as modeling data basis, with pulverized coal preparation system and coal dust piece-rate system
Simulation model is model basis, using many data vector analog algorithm, carries out on-line analysis and prediction to fineness of pulverized coal.
3. a kind of system for fineness of pulverized coal control it is characterised in that：Include parameter acquisition module, analysis and processing module,
Adjust control module, fineness of pulverized coal on-line measurement module；
Described parameter acquisition module：For power plant's operational factor acquisition system, for obtaining the parameter of coal pulverizer coal-supplying amount；
Described regulation control module：For being adjusted, control the fineness of coal dust to separator；
Described fineness of pulverized coal on-line measurement module：For on-line analysis, measurement are carried out to fineness of pulverized coal, draw fineness of pulverized coal or its
Variation tendency；
Described analysis and processing module：Connecting quantity acquisition module, regulation control module and fineness of pulverized coal on-line measurement module respectively,
It adjusts separator according to the parameter of described coal-supplying amount, using the fineness of pulverized coal that drawn or its variation tendency as feedback data
To adjust separator further, to realize the closed-loop control of fineness of pulverized coal, so that fineness of pulverized coal is controlled in claimed range.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201610775401.3A CN106391286A (en) | 2016-08-31 | 2016-08-31 | System and method for controlling fineness of pulverized coal |
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| CN201610775401.3A CN106391286A (en) | 2016-08-31 | 2016-08-31 | System and method for controlling fineness of pulverized coal |
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| CN201610775401.3A Pending CN106391286A (en) | 2016-08-31 | 2016-08-31 | System and method for controlling fineness of pulverized coal |
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Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109046735A (en) * | 2018-10-24 | 2018-12-21 | 江苏丰尚智能科技有限公司 | A kind of crushing and processing automatically adjust the devices and methods therefor of product granularity in the process |
| 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 |
| CN109530072A (en) * | 2018-11-09 | 2019-03-29 | 南京工程学院 | A method of on-line monitoring pulverized coal preparation system comprehensive energy efficiency |
| CN110345466A (en) * | 2019-07-09 | 2019-10-18 | 南京博沃科技发展有限公司 | A method of water wall high temperature corrosion in furnace is alleviated by the control of full load fineness of pulverized coal |
| CN111250253A (en) * | 2020-03-04 | 2020-06-09 | 广东电科院能源技术有限责任公司 | Self-adaptive control method, system and equipment for dynamic separator of coal mill |
| CN111298951A (en) * | 2020-03-24 | 2020-06-19 | 桂林鸿程矿山设备制造有限责任公司 | Automatic powder selection control method, system and device for vertical mill classifier |
| CN112742544A (en) * | 2020-12-07 | 2021-05-04 | 国家能源集团山东石横热电有限公司 | Debugging method and system for dynamic separator of medium-speed coal mill |
| CN114733640A (en) * | 2022-03-03 | 2022-07-12 | 江苏丰尚智能科技有限公司 | Method and device for adjusting processing parameters of pulverizer and computer equipment |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201815364U (en) * | 2010-09-21 | 2011-05-04 | 上海安敏机电设备厂 | Rotor-stator combination type pulverized coal separator |
| CN103100477A (en) * | 2011-11-10 | 2013-05-15 | 华北电力科学研究院有限责任公司 | Method and device for automatic adjustment of fineness of pulverized coal for medium speed coal mill |
| CN104374675A (en) * | 2014-10-15 | 2015-02-25 | 国家电网公司 | Coal mill pulverized coal fineness online monitoring method |
| CN104627684A (en) * | 2015-01-27 | 2015-05-20 | 上海发电设备成套设计研究院 | Online pipe anti-blocking method for utility boiler primary air pipe |
-
2016
- 2016-08-31 CN CN201610775401.3A patent/CN106391286A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201815364U (en) * | 2010-09-21 | 2011-05-04 | 上海安敏机电设备厂 | Rotor-stator combination type pulverized coal separator |
| CN103100477A (en) * | 2011-11-10 | 2013-05-15 | 华北电力科学研究院有限责任公司 | Method and device for automatic adjustment of fineness of pulverized coal for medium speed coal mill |
| CN104374675A (en) * | 2014-10-15 | 2015-02-25 | 国家电网公司 | Coal mill pulverized coal fineness online monitoring method |
| CN104627684A (en) * | 2015-01-27 | 2015-05-20 | 上海发电设备成套设计研究院 | Online pipe anti-blocking method for utility boiler primary air pipe |
Non-Patent Citations (3)
| Title |
|---|
| 刘定平，肖蔚然，陆继东: "基于煤粉细度反馈控制的制粉系统优化", 《华南理工大学学报》 * |
| 张培超: "基于在线测量技术的煤粉细度优化方法研究及应用", 《中国优秀硕士学位论文全文数据库信息科技辑》 * |
| 张立岩,岳恒,张君,丁进良,柴天佑: "基于最小二乘-支持向量机的制粉过程煤粉细度软", 《清华大学学报》 * |
Cited By (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
| CN109174423B (en) * | 2018-09-18 | 2023-08-11 | 国能龙源蓝天节能技术有限公司 | Coal mill outlet temperature control system and method based on-line adjustment of pulverized coal fineness |
| 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 |
| CN109046735A (en) * | 2018-10-24 | 2018-12-21 | 江苏丰尚智能科技有限公司 | A kind of crushing and processing automatically adjust the devices and methods therefor of product granularity in the process |
| CN109530072B (en) * | 2018-11-09 | 2020-11-10 | 南京工程学院 | Method for monitoring comprehensive energy efficiency of powder making system on line |
| CN109530072A (en) * | 2018-11-09 | 2019-03-29 | 南京工程学院 | A method of on-line monitoring pulverized coal preparation system comprehensive energy efficiency |
| CN110345466A (en) * | 2019-07-09 | 2019-10-18 | 南京博沃科技发展有限公司 | A method of water wall high temperature corrosion in furnace is alleviated by the control of full load fineness of pulverized coal |
| CN111250253B (en) * | 2020-03-04 | 2021-08-24 | 南方电网电力科技股份有限公司 | Self-adaptive control method, system and equipment for dynamic separator of coal mill |
| CN111250253A (en) * | 2020-03-04 | 2020-06-09 | 广东电科院能源技术有限责任公司 | Self-adaptive control method, system and equipment for dynamic separator of coal mill |
| CN111298951A (en) * | 2020-03-24 | 2020-06-19 | 桂林鸿程矿山设备制造有限责任公司 | Automatic powder selection control method, system and device for vertical mill classifier |
| CN112742544A (en) * | 2020-12-07 | 2021-05-04 | 国家能源集团山东石横热电有限公司 | Debugging method and system for dynamic separator of medium-speed coal mill |
| CN112742544B (en) * | 2020-12-07 | 2022-05-17 | 国家能源集团山东石横热电有限公司 | Debugging method and system for dynamic separator of medium-speed coal mill |
| CN114733640A (en) * | 2022-03-03 | 2022-07-12 | 江苏丰尚智能科技有限公司 | Method and device for adjusting processing parameters of pulverizer and computer equipment |
| CN114733640B (en) * | 2022-03-03 | 2023-09-12 | 江苏丰尚智能科技有限公司 | Method and device for adjusting processing parameters of pulverizer and computer equipment |
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