CN86108905A - Raw meal composition charge ratio autocontrol system for vertical furnance - Google Patents

Raw meal composition charge ratio autocontrol system for vertical furnance Download PDF

Info

Publication number
CN86108905A
CN86108905A CN86108905.7A CN86108905A CN86108905A CN 86108905 A CN86108905 A CN 86108905A CN 86108905 A CN86108905 A CN 86108905A CN 86108905 A CN86108905 A CN 86108905A
Authority
CN
China
Prior art keywords
raw material
control system
raw
flow
shaft kiln
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.)
Withdrawn
Application number
CN86108905.7A
Other languages
Chinese (zh)
Other versions
CN1009768B (en
Inventor
冯忠潜
蓝克坚
王秀根
貊大卫
梁国柱
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.)
Tsinghua University
Original Assignee
Tsinghua University
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 Tsinghua University filed Critical Tsinghua University
Priority to CN 86108905 priority Critical patent/CN1009768B/en
Publication of CN86108905A publication Critical patent/CN86108905A/en
Publication of CN1009768B publication Critical patent/CN1009768B/en
Expired legal-status Critical Current

Links

Images

Landscapes

  • Curing Cements, Concrete, And Artificial Stone (AREA)
  • Silicates, Zeolites, And Molecular Sieves (AREA)
  • Muffle Furnaces And Rotary Kilns (AREA)
  • Control Of Non-Electrical Variables (AREA)

Abstract

The present invention is a kind of advanced person, practicality and economic raw meal composition charge ratio autocontrol system for vertical furnance.At the bigger problem of main material component fluctuation in the shaft kiln cement plant raw material, adopt a kind of special dual closed loop control method: promptly use flow rate set value controller and microcomputer nuclear scale, press the flow of main material in the set-point control raw material; With raw material rate value controller and quick five elements analytical instrument, readjustment flow set-point, (stablizing P) is qualified for KH, N to keep raw material rate value.The present invention is applicable to shaft kiln cement plant kinds of processes flow process, existing equipment, factory building is changed little, invests for a short time, and instant effect is particularly suitable for the technological transformation of shaft kiln cement plant.

Description

The present invention relates to the feed intake control of composition proportion process of microcomputer nuclear measurement instrument industry process control, particularly factory.
Now external manufacture of cement adopts large-sized rotary kiln mostly.Carry out full elemental analysis with large-scale x-ray fluorescence analyzer, cooperate buncher control mass flow, whole raw material system automation degree height with the special electronic scale.But equipment investment is big, is not suitable for shaft kiln cement plant.
China cement mill mostly is vertical kiln system greatly, does not still have vertical kiln raw material composition proportion automatic control system at present.
The flow of several main materials in the raw material is promptly controlled in the charging of domestic existing microcomputer raw-meal ingredient.But shaft kiln cement plant does not generally have large-scale homogenizing storehouse, and the material component fluctuation is bigger, therefore only controls the proportioning control that mass flow still can't be realized raw ingredients.And the vertical kiln raw material proportioning feed system that adopts mechanical scale or electronic scales to measure mass flow exists precision low, and shortcomings such as long-time stability difference can not guarantee raw material lime saturation ratio KH value, and stablizing of silicon rate N value, aluminium rate P value is qualified.
The objective of the invention is to find out the automatic control system of the composition proportion process of shaft kiln cement plant, shaft kiln cement plant production charging is constantly adjusted when carrying out, make proportioning quite accurate.
Process of the present invention is to find a kind of new dual closed-loop control system of suitable shaft kiln cement plant.Realize the automatic control of raw ingredients proportioning with flow rate set value controller and raw material rate value controller.
The flow rate set value controller is controlled microcomputer, special software, time control transducer lock in time and feeding control executing mechanism by industrial process and is formed.Use the main material actual flow of controlled nucleon operated belt conveyor scale on-line measurement.Be input in the microcomputer and compare with the mass flow definite value, frequency characteristic and feedback transfer function according to system, obtain back the control amount with special software, by returning control transducer lock in time, change silicon controlled conduction angle in the feeder topworks, adjust mass flow, realize the closed-loop control of mass flow.(first reclose ring control) so be not subjected to the influence of belt tension, material impact, do not disturbed by environment temperature and dust also because of uclear scale contact with belt, thereby can realize that material accurately adjusts, and be qualified to reach stablizing of raw ingredients.
The raw material rate value controller is made up of control microcomputer, dedicated computing software and the data communication interface and the rapid fluorescence five elements analytical instrument that have a long cable remote control transmission photoelectrical coupler.Use rapid fluorescence five elements analytical instrument quick sampling to measure five kinds of component contents such as calcium, iron, silicon, aluminium, charcoal in the raw material, be transferred to the control microcomputer through the cable remote control, calculate each three rate values of raw material array constantly, frequency characteristic and feedback transfer function according to system, calculate and adjust the flow set-point of several materials with tendency method, realize that the definite value of three rate values of raw material (KH value, N value, P value) is controlled.(second recloses encircles control)
The principle of raw meal composition charge ratio autocontrol system for vertical furnance and particular content are as shown in Figure 1.
Four kinds of main material lime stones, clay, iron powder and coals forming raw material are stored in feed bin A respectively 1, A 2, A 2, A 4In, by feeder B 1, B 2, B 3, B 4Down to dividing belt C 1, C 2, C 3, C 4On.A controlled nucleon operated belt conveyor scale D respectively is installed on four branch belts 1, D 2, D 3, D 4, four kinds of material actual flows of instantaneous on-line measurement.Measuring-signal is input to flow rate set value controller E 1, E 2, E 3, E 4In, through with the people for presetting four kinds of mass flow set-point I that (L sends here by control desk) or raw material rate value controller provide 1, I 2, I 3, I 4Relatively, calculate back the control amount, by returning control transducer P lock in time with special software 1, P 2, P 3, P 4Change thyristor operating angle in the feeder topworks, control feeder B 1, B 2, B 3, B 4Feeding capacity, realize the first ring feedback regulation control of reclosing, i.e. the definite value of mass flow control.
In view of compositions such as calcium, silicon, aluminium in shaft kiln cement plant main material, particularly lime stone, the clay often fluctuate, only there is flow rate set value control can not guarantee the qualified of composition proportion in the raw material.For this reason, after total belt F entered raw mill G, to the sampler H place between the raw material logical sequence N, taking-up was regularly ground raw material and is made sample and deliver to and carry out quick composition measurement in the analytical instrument J at the mill tail four kinds of mixing of materials.Each measurement result constantly is in cable is input to raw material rate value controller K.In controller K, at first calculate actual, weigh three whether qualified rate values of raw ingredients proportioning: KH value (raw material lime saturation ratio) N value (silicon rate) P value (aluminium rate), and with the qualification rate value comparison that will reach.Because raw material will be through bigger time delay to going out mill back sampler H from blanking belt C, therefore the frequency characteristic of the second reclosing ring control is far below first weight, therefore will be according to the variation tendency of a series of sample time of measured value, calculate by special software, adjust the flow set-point I of four kinds of materials with tendency method 1, I 2, I 3, I 4, changing to offset the raw ingredients that causes owing to the material component fluctuation, realization second is reclosed and is encircled control: the definite value control of raw material rate value.
L is a raw material system centre control desk.It comprises: realize interactive operation keyboard, various shift knobs, various parameter display, pilot lamp and the printer manually controlled with microcomputer.In fact it has comprised whole hardware and softwares of industrial process control microcomputer itself and the dual close-loop automatic adjustment of realization system.
The main material component of raw material that M provides for manufacturer, the calorific value of coal, ash content, and known arrays such as three rate values of desired raw material and permission fluctuation range can obtain initial mass flow set-point I through special software calculating 1, I 2, I 3, I 4This control desk can be monitored the whole raw material production run of shaft kiln cement plant, can numeral show relevant surveying instrument, regulator 60 surplus kind of parameter, can the class's of statistics output, day output, raw ingredients, raw material rate value situation of change, and print production report.
The present invention is owing to adopt dual closed-loop control, with advanced non-contact type nuclear instrument, realized that the composition proportion that shaft kiln cement plant fails to solve for many years always controls automatically, will play huge effect for improving the shaft kiln cement plant product quality.Native system does not disturb the original technological process in cement mill, small investment, instant effect, has advance, practicality, economy, is easy to be accepted by shaft kiln cement producer.

Claims (4)

1, a kind of shaft kiln cement plant raw-meal ingredient control system is characterized in that, is a kind of automatic control system of raw material flow composition proportion process.
2, according to the automatic control system of the described raw ingredients proportioning of claim 1 process, it is characterized in that, with the dual closed-loop control system of microcomputer nuclear instrument realization.
3, according to the dual closed-loop control system of the described microcomputer nuclear instrument of claim 2, it is characterized in that, with microcomputer nuclear scale D on-line measurement raw material bistrique material instantaneous delivery, by flow rate set value controller E, realize the first reclosing ring control, realize the definite value control of mass flow.
4, according to the dual closed-loop control system of the described microcomputer nuclear instrument of claim 2, it is characterized in that, measure component contents such as calcium, iron, silicon, aluminium, charcoal in the mill raw material fast with radiofluorescence five elements quick analytic instrument J, by raw material rate value controller K, calculate raw material rate value, adjustment mass flow definite value I realizes the second reclosing ring control, and realization raw ingredients proportioning is controlled automatically.
CN 86108905 1986-12-31 1986-12-31 Raw meal composition charge ratio autocontrol system for vertical furnance Expired CN1009768B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN 86108905 CN1009768B (en) 1986-12-31 1986-12-31 Raw meal composition charge ratio autocontrol system for vertical furnance

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN 86108905 CN1009768B (en) 1986-12-31 1986-12-31 Raw meal composition charge ratio autocontrol system for vertical furnance

Publications (2)

Publication Number Publication Date
CN86108905A true CN86108905A (en) 1988-07-20
CN1009768B CN1009768B (en) 1990-09-26

Family

ID=4804100

Family Applications (1)

Application Number Title Priority Date Filing Date
CN 86108905 Expired CN1009768B (en) 1986-12-31 1986-12-31 Raw meal composition charge ratio autocontrol system for vertical furnance

Country Status (1)

Country Link
CN (1) CN1009768B (en)

Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1049200C (en) * 1994-03-08 2000-02-09 中国建筑材料科学研究院设计所 Method for controlling the raw ingredients of cement
CN101458517B (en) * 2007-12-14 2010-10-27 中国科学院沈阳自动化研究所 Raw material rate value optimizing and controlling method for cement raw material batching system
CN104374791A (en) * 2014-11-28 2015-02-25 广西鱼峰水泥股份有限公司 Technology for producing fluorometric-analysis raw material with high contrastive acceptability
CN104390994A (en) * 2014-11-28 2015-03-04 广西鱼峰水泥股份有限公司 Method for producing high-contrast yield fluorescence analysis raw material
CN104569016A (en) * 2014-11-28 2015-04-29 广西鱼峰水泥股份有限公司 Method for increasing raw material comparison passing percent through fluorescence analysis
CN104596814A (en) * 2014-11-28 2015-05-06 广西鱼峰水泥股份有限公司 Production method of fluorescence analysis raw material with high contrast qualified rate
CN104597066A (en) * 2014-11-28 2015-05-06 广西鱼峰水泥股份有限公司 Method for improving contrast qualified rate of fluorescence analysis raw material
CN104634801A (en) * 2014-11-28 2015-05-20 广西鱼峰水泥股份有限公司 Technology for improving comparison yield of fluorescence analysis raw materials
CN104655665A (en) * 2014-11-28 2015-05-27 广西鱼峰水泥股份有限公司 Process capable of improving contrast yield of fluorescence analysis raw material
CN106796435A (en) * 2014-08-22 2017-05-31 可耐福石膏两合公司 Apparatus and method for mixing unconsolidated rock material

Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1049200C (en) * 1994-03-08 2000-02-09 中国建筑材料科学研究院设计所 Method for controlling the raw ingredients of cement
CN101458517B (en) * 2007-12-14 2010-10-27 中国科学院沈阳自动化研究所 Raw material rate value optimizing and controlling method for cement raw material batching system
CN106796435A (en) * 2014-08-22 2017-05-31 可耐福石膏两合公司 Apparatus and method for mixing unconsolidated rock material
CN104374791A (en) * 2014-11-28 2015-02-25 广西鱼峰水泥股份有限公司 Technology for producing fluorometric-analysis raw material with high contrastive acceptability
CN104390994A (en) * 2014-11-28 2015-03-04 广西鱼峰水泥股份有限公司 Method for producing high-contrast yield fluorescence analysis raw material
CN104569016A (en) * 2014-11-28 2015-04-29 广西鱼峰水泥股份有限公司 Method for increasing raw material comparison passing percent through fluorescence analysis
CN104596814A (en) * 2014-11-28 2015-05-06 广西鱼峰水泥股份有限公司 Production method of fluorescence analysis raw material with high contrast qualified rate
CN104597066A (en) * 2014-11-28 2015-05-06 广西鱼峰水泥股份有限公司 Method for improving contrast qualified rate of fluorescence analysis raw material
CN104634801A (en) * 2014-11-28 2015-05-20 广西鱼峰水泥股份有限公司 Technology for improving comparison yield of fluorescence analysis raw materials
CN104655665A (en) * 2014-11-28 2015-05-27 广西鱼峰水泥股份有限公司 Process capable of improving contrast yield of fluorescence analysis raw material

Also Published As

Publication number Publication date
CN1009768B (en) 1990-09-26

Similar Documents

Publication Publication Date Title
CN100458604C (en) Material balance intelligent control system
CN202486576U (en) Cement raw material blending control device
CN86108905A (en) Raw meal composition charge ratio autocontrol system for vertical furnance
CN101920530B (en) Continuous proportioning system and method for refractory synthesis material
CN113359465B (en) System and method for intelligently controlling sintering ingredient components
CN107130105B (en) A kind of method for improving sinter basicity coefficient of stabilization and its proportioner used
CN107487645B (en) A kind of mining goods vehicle automatic identification entrucking Coal Blending System and method
CN104965532A (en) Cement raw material ingredient control system and method
CN102147282A (en) Intelligent dynamic weightlessness scale
CN111933224A (en) Raw material automatic batching method and system based on clinker rate value
CN114259930A (en) Raw material batching and feeding system and method for boiling chlorination process by using same
CN101555546A (en) Proportioning regulation method of sintering feed
CN102156486A (en) Control method for adding water in mixture in sintering production
CN214717429U (en) Automatic production system for machine-made sand
CN113602830A (en) Smelting furnace feeding system and control method
CN104724479A (en) System and method for blending power heat coal
CN2249127Y (en) Adding-ratio controller for sintering added coal powder
CN206778210U (en) A kind of system of compounding ingredient containing Iron Ore Powder
CN2063870U (en) Raw materials proportion auto-controlling system
CN111443598A (en) Cement vertical mill control method and device
CN216727010U (en) Raw material batching feeding system in boiling chlorination technology
CN106964271A (en) A kind of system and method for compounding ingredient containing Iron Ore Powder
CN2910854Y (en) Precision dosage apparatus
CN205909922U (en) Accurate batching control system of carbide raw materials
CN105046357A (en) Material balance control model for return ore bunker in sintering system

Legal Events

Date Code Title Description
C06 Publication
PB01 Publication
C10 Entry into substantive examination
SE01 Entry into force of request for substantive examination
C13 Decision
C14 Grant of patent or utility model
C19 Lapse of patent right due to non-payment of the annual fee