CN113984817A - Application method of channel-type element on-line analyzer - Google Patents
Application method of channel-type element on-line analyzer Download PDFInfo
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- CN113984817A CN113984817A CN202111309258.6A CN202111309258A CN113984817A CN 113984817 A CN113984817 A CN 113984817A CN 202111309258 A CN202111309258 A CN 202111309258A CN 113984817 A CN113984817 A CN 113984817A
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- 238000000034 method Methods 0.000 title claims abstract description 37
- 239000000463 material Substances 0.000 claims abstract description 75
- 238000004519 manufacturing process Methods 0.000 claims abstract description 33
- 230000008569 process Effects 0.000 claims abstract description 14
- 238000001514 detection method Methods 0.000 claims abstract description 13
- 238000003908 quality control method Methods 0.000 claims abstract description 12
- 238000004458 analytical method Methods 0.000 claims abstract description 11
- 238000007599 discharging Methods 0.000 claims abstract description 11
- 238000005259 measurement Methods 0.000 claims abstract description 10
- 238000005516 engineering process Methods 0.000 claims abstract description 6
- 230000004913 activation Effects 0.000 claims abstract description 3
- 238000005070 sampling Methods 0.000 claims description 43
- 239000013590 bulk material Substances 0.000 claims description 4
- 238000009533 lab test Methods 0.000 claims description 4
- 230000003993 interaction Effects 0.000 claims description 2
- 238000003947 neutron activation analysis Methods 0.000 claims description 2
- 239000004568 cement Substances 0.000 abstract description 20
- 239000007787 solid Substances 0.000 abstract description 3
- 239000010881 fly ash Substances 0.000 description 3
- 238000009434 installation Methods 0.000 description 3
- 235000019738 Limestone Nutrition 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 239000010440 gypsum Substances 0.000 description 2
- 229910052602 gypsum Inorganic materials 0.000 description 2
- 239000006028 limestone Substances 0.000 description 2
- 239000002893 slag Substances 0.000 description 2
- 238000003556 assay Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000012921 fluorescence analysis Methods 0.000 description 1
- 230000014759 maintenance of location Effects 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 239000000843 powder Substances 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 238000011897 real-time detection Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N23/00—Investigating or analysing materials by the use of wave or particle radiation, e.g. X-rays or neutrons, not covered by groups G01N3/00 – G01N17/00, G01N21/00 or G01N22/00
- G01N23/22—Investigating or analysing materials by the use of wave or particle radiation, e.g. X-rays or neutrons, not covered by groups G01N3/00 – G01N17/00, G01N21/00 or G01N22/00 by measuring secondary emission from the material
- G01N23/221—Investigating or analysing materials by the use of wave or particle radiation, e.g. X-rays or neutrons, not covered by groups G01N3/00 – G01N17/00, G01N21/00 or G01N22/00 by measuring secondary emission from the material by activation analysis
- G01N23/222—Investigating or analysing materials by the use of wave or particle radiation, e.g. X-rays or neutrons, not covered by groups G01N3/00 – G01N17/00, G01N21/00 or G01N22/00 by measuring secondary emission from the material by activation analysis using neutron activation analysis [NAA]
-
- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05B—CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
- G05B19/00—Programme-control systems
- G05B19/02—Programme-control systems electric
- G05B19/04—Programme control other than numerical control, i.e. in sequence controllers or logic controllers
- G05B19/05—Programmable logic controllers, e.g. simulating logic interconnections of signals according to ladder diagrams or function charts
- G05B19/058—Safety, monitoring
-
- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05B—CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
- G05B2219/00—Program-control systems
- G05B2219/10—Plc systems
- G05B2219/16—Plc to applications
- G05B2219/163—Domotique, domestic, home control, automation, smart, intelligent house
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E30/00—Energy generation of nuclear origin
- Y02E30/30—Nuclear fission reactors
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- General Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Automation & Control Theory (AREA)
- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Chemical & Material Sciences (AREA)
- Analytical Chemistry (AREA)
- Biochemistry (AREA)
- General Health & Medical Sciences (AREA)
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- Pathology (AREA)
- Analysing Materials By The Use Of Radiation (AREA)
- Measurement Of Radiation (AREA)
Abstract
The invention discloses an application method of a channel type element on-line analyzer, which realizes the on-line detection of element content and automatic quality control of solid bulk materials in cement production. The neutron activation pipeline type element on-line analyzer can be directly arranged on a field material conveying channel, or a channel of the analyzer is used by combining a sampler and a material return pipeline. The PLC control program is adopted to automatically control the feeding amount, the pipeline material level and the discharging amount, so that the continuous measurement of the material is realized, and the production is effectively guided. The invention expands the application process points of the cement element on-line analysis technology, and has the advantages of wide application range, high analysis speed, high measurement precision, effective improvement of product quality and the like.
Description
Technical Field
The invention relates to an application method of a channel type analyzer for on-line detection and quality control of solid bulk material element content in a cement production process.
Background
In the traditional element content measuring method, a special sampling person collects samples of materials in each process link, the collected material samples are prepared into analysis samples required by measurement, and then the analysis is carried out in a laboratory fluorescence analysis or manual chemical analysis mode, and finally the element content of the materials is obtained and used as production guidance and production assessment. In the traditional assay method, the labor intensity of personnel is high, the time is lagged, the result representativeness is not strong, and the site production cannot be well guided.
The neutron activation analysis technology is a mass material element online analysis technology which is recognized in the world at present and has the best effect, a belt-crossing type element online analyzer applying the principle is put on the market for more than 20 years and only suitable for belt-crossing installation, a channel type element online analyzer adopting the principle needs to be designed by combining with a field process, and the material online detection requirement is met through a special installation structure.
The transportation mode of materials in the cement processing production is diversified, and the massive materials are mostly transported by adopting belts; the powdery materials are mostly conveyed by adopting air chutes, chute channels, bucket elevators and the like. The belt-crossing type element on-line analyzer can be used for detecting materials conveyed by a belt, and a channel type element on-line analyzer is required to be installed in a process link which is not conveyed by the belt and needs element content control, so that an effective application method is not available at present.
In the process of batching cement finished products, raw materials such as clinker, gypsum, fly ash, slag, limestone and the like need to be proportioned according to the measurement, wherein SO3、The contents of CaO, MgO and Cl are strictly controlled quality indexes. Clinker, gypsum, limestone and coarse fly ash are carried into the mill through the skin, while fine fly ash and slag powder are directly added into the cement mill through a chute or directly mixed with milled cement without passing through a belt. In the process, element detection and front-end proportioning adjustment are required to be carried out on final finished cement, and the process can effectively improve the quality of cement products and improve the competitiveness of the products by adopting a channel type analyzer to be installed on a cement mill rear channel to carry out automatic batching adjustment.
The real-time detection and quality control of elements in the cement production process have important significance, and no channel type element on-line analyzer suitable for the production process conditions is available at present.
Disclosure of Invention
The invention provides the application method of the channel-type element on-line analyzer, which has the advantages of wide application range, convenient installation, high measurement precision and obvious quality control effect according to the characteristics of cement production process, quality control requirements and the defects of the existing detection means and control mode.
The technical scheme for solving the technical problems is that a channel type element on-line analyzer is adopted to detect elements and control the quality in combination with a field production process.
The application method is characterized in that:
the analyzer can be directly arranged on a field production material conveying channel or a channel obtained by properly modifying the original channel; the analyzer can also be installed in combination with a sampling and feeding back device. The obtained material sample can enter the analyzer channel, or the sampling device and the obtained material enter the analyzer channel together; the material flows through a measuring channel of the analyzer to carry out element detection, the analyzer uploads a detection result once per minute to a quality control system in real time, and the system automatically carries out quality control adjustment; the analyzed material is discharged out of the measuring channel through a discharge valve and returns to the production line; the sampler and the discharge valve are automatically controlled by a PLC; the device is provided with a set of sample reserving and sampling device, is used for laboratory test of samples in the dynamic calibration process, and calibrates instruments.
In a specific application method, an analyzer mainly detects that the material is solid bulk material; the analyzer can be directly arranged on a field production material conveying channel or a channel obtained by properly modifying the original channel; the analyzer can also be installed by combining a sampling channel and a return channel; the obtained material sample can enter the analyzer channel, or the sampling device and the obtained material enter the analyzer channel together; the material enters the analyzer through the channel, 1 or more material level switches, such as a rotation-resisting type material level switch, a capacitance type material level switch, a diaphragm type material level switch and the like, are arranged on the feeding channel, a PLC control program automatically controls the discharge valve according to the material level condition, when the material reaches the discharging level, the program automatically reduces the motor frequency of the discharge valve, reduces the discharging amount, when the material reaches the feeding level, the motor frequency of the discharge valve is improved, the discharging amount is increased, so that the material amount in the measuring channel is controlled, and the requirement of continuous measurement is ensured; the discharge valve can be one of a dividing wheel discharge valve, a spiral discharger and a gate valve, has the discharge capacity matched with the feeding amount, and is automatically controlled by a PLC (programmable logic controller), and the hourly discharging amount is less than or equal to the hourly feeding amount; a set of continuous sample reserving and sampling device is provided for laboratory test of samples, and the analyzer is dynamically calibrated and periodically calibrated in the later application process;
the analyzer is matched with an element analysis program and a quality control program, is matched with a sampling and unloading control program when being used in combination with a sampler, and performs data interaction with a field DCS.
In the specific application method, when the analyzer is arranged in a material conveying channel after sampling, one or more sets of samplers directly sample in the production process, the samplers have continuous sampling capacity meeting the process characteristics of materials and the technical characteristics of neutron activation bulk material analysis, the sampling amount per hour is 3000kg-50000kg, and the representativeness of the analyzed materials is ensured; the sampler can be one of a vertical chute telescopic sampler, a spiral sampler, an air chute sampler and a belt sampler, and the material quantity collected by the sampler per hour is selected according to the measurement requirement and the field production quantity; the sampler works under the automatic program control of a PLC, the sampling amount is automatically adjusted according to the production yield, the production yield can be obtained by reading data such as a field feeder, a belt scale, a hoist current, a flowmeter and the like, the sampling amount is in a direct proportion relation with the production yield, and the sampling frequency is controlled by automatically calculating the sampling amount according to the known production yield.
Compared with the prior art, the invention has the beneficial effects that the application process point of the cement element on-line analysis technology is expanded, and the on-line detection of the material elements conveyed by chute pipelines, air chutes, belts and the like can be realized through proper modification. The on-line detection and automatic quality control of elements in cement production are realized, and the product quality is stabilized.
Drawings
FIG. 1 is a schematic diagram of a cement production site application method of a channel-type element on-line analyzer provided by an embodiment of the invention;
in fig. 1: 21. the device comprises a bucket elevator, 22, an elevator chute, 23, a sampler, 24, a sampling channel, 25, a material level switch, 26, a channel type element analyzer, 27, a dividing wheel discharge valve, 28, a sample retention sampler and 29, a material return channel.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, not all, embodiments of the present invention. All other embodiments, which can be obtained by a person skilled in the art without any inventive step based on the embodiments of the present invention, are within the scope of the present invention.
As shown in fig. 1, a schematic diagram of a method for applying a channel-type element online analyzer to a cement production site is provided in the present embodiment, and the analyzer is installed at a post-cement grinding process point to explain a method for applying the channel-type element online analyzer.
In the figure, a bucket elevator (21), an elevator chute (22), a sampler (23), a sampling passage (24), a material level switch (25), a passage type element analyzer (26), a dividing wheel discharge valve (27), a sample reserving sampler (28) and a return passage (29).
The application method is applied to detection and batching of cement finished products, cement is ground and then lifted to the top of a cement warehouse through a bucket elevator (21), and a sampler (23) is installed at a chute (22) of the material discharging elevator. The material after the sample gets into analysis appearance (26) measuring channel through sampling channel (24), installs two material level switches (25) on sampling channel (24), and the material after the measurement is discharged the analysis appearance through box wheel discharge valve (27), returns to the production technology through feed back passageway (29), and sample sampler (28) are used for taking a sample to the material that box wheel discharge valve (27) was discharged.
The sampler (23) adopts a vertical chute telescopic sampler, the sampling of the vertical chute telescopic sampler is completed by the work of a solenoid valve control cylinder, the switch of the solenoid valve is automatically controlled by a PLC program according to the sampling quantity requirement and the production yield, and the hourly sampling quantity is the product of the single sampling quantity and the sampling frequency. The production yield can be read from the flow of a feeder or the current signal of a hoist (21) in the production process, and a linear relation between the sampling frequency and the yield is established.
Grid wheel discharge valve (27) are installed in the discharge opening for control the discharge capacity, and the product of grid wheel discharge valve (27) cavity volume and density is the discharge capacity of rotatory a week, and the rotational speed is controlled by the converter, and the hour discharge capacity is the product of single commentaries on classics discharge capacity and grid wheel rotational speed. According to the detection requirement of the analyzer (26), the material is required to be filled in the channel all the time, the required discharging amount is not more than the sampling amount all the time, and after the sampling amount is calculated and confirmed, a relational expression of the rotating speed of the discharging valve (27) of the dividing wheel and the sampling amount is established. And the PLC is used for automatic control.
Under special circumstances such as material flow unstability, need monitor actual material volume with material level switch (25), adopt two machinery to hinder rotary material level switch (25) in this example, PLC control program carries out automatic control to the discharge valve according to the material level condition, when the material reachs the material level, the automatic discharge valve motor frequency that reduces of procedure, reduce the discharge capacity, when the material reachs the material level, improve discharge valve motor frequency, increase the discharge capacity, thereby control the material volume in measuring the passageway, guarantee continuous measurement's requirement.
Given signals and feedback signals of the sampler (23) and the dividing wheel discharge valve (27), and switching value signals of the material level switch (25) are all connected into a PLC control system, so that the automatic control of the whole detection material flow is realized.
The sample sampler (28) is used for sampling the material discharged by the dividing wheel discharge valve (27) for laboratory tests, and the analyzer (26) can be periodically calibrated through sampling test data.
Claims (8)
1. The application method of the channel type element on-line analyzer is characterized by comprising the following steps:
the analyzer is a channel-type element on-line analyzer adopting neutron activation analysis technology;
the analyzer can be directly arranged on a material conveying channel produced on site or a channel obtained by properly modifying the original channel, or can be arranged by combining a sampler and a material return pipeline;
the material flows through a measuring channel of the analyzer to carry out element detection, the analyzer detects the result once per minute and uploads the data to a quality control system in real time, and the system automatically carries out quality control adjustment;
the analyzed material is discharged out of the measuring channel through a discharge valve and returns to the production line;
the PLC system automatically controls the sampler and the discharge valve;
a set of sampling device is installed on the feeding channel or the feed back channel, laboratory test is carried out on material sampling in the dynamic calibration process, and calibration is carried out on an analyzer.
2. The application method as claimed in claim 1, wherein the discharge valve of the analyzer has a discharge capacity matched to the feed rate, and is automatically controlled by a PLC, and the hourly discharge rate is less than or equal to the hourly feed rate.
3. The application method of claim 1, wherein 1 or more material level switches are installed on the feeding channel of the analyzer, and are one or more of a rotation-resisting type material level switch, a capacitance type material level switch and a diaphragm type material level switch, the PLC control program automatically controls the discharge valve according to the material level condition, when the material reaches the discharging level, the program automatically reduces the motor frequency of the discharge valve, reduces the discharging amount, when the material reaches the charging level, the motor frequency of the discharge valve is increased, the discharging amount is increased, and therefore the material amount in the measuring channel is controlled, and the requirement of continuous measurement is guaranteed.
4. The method of use of claim 1, wherein the one or more sampling devices are adapted to sample directly during the manufacturing process when the analyzer is used in conjunction with the sampling device, the sampling device having a continuous sampling capability to meet process characteristics of the material, to meet technical characteristics of neutron activation bulk material analysis, and wherein the sampling volume is 3000kg to 50000kg per hour.
5. The method of use of claim 1, wherein the sampler is one or more of a chute sampler, a spiral sampler, an air chute sampler, a belt sampler, etc., when the analyzer is used in conjunction with the sampler.
6. The method of use according to claim 1, wherein when the analyzer is used in conjunction with a sampler, the operation of the sampler is controlled by a PLC automatic program, and the amount of sampling is automatically adjusted according to the production throughput; the production yield is obtained by reading data of a field feeder, a belt scale, a hoister current, a flowmeter and the like, the sampling quantity is in direct proportion to the production yield, the sampling quantity is automatically calculated according to the known production yield, and the sampling frequency is automatically controlled.
7. The application method of claim 1, wherein the analyzer is used in combination with an element analysis program, a quality control program, a sampler, a sampling and unloading control program, and performs data interaction with a field DCS.
8. The method of use of claim 1, wherein when the analyzer is used in conjunction with a sampler, the sample of material is taken into the analyzer channel, or the sampling device is taken into the analyzer channel with the material taken.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122162534 | 2021-09-08 | ||
| CN2021221625342 | 2021-09-08 |
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| CN113984817A true CN113984817A (en) | 2022-01-28 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202111309254.8A Withdrawn CN113984816A (en) | 2021-09-08 | 2021-11-06 | Channel type element on-line analyzer |
| CN202122701483.6U Active CN217561373U (en) | 2021-09-08 | 2021-11-06 | Channel type element on-line detection device |
| CN202122701503.XU Active CN216285004U (en) | 2021-09-08 | 2021-11-06 | On-spot mounting structure of passageway formula element on-line analyzer |
| CN202111309261.8A Active CN113984818B (en) | 2021-09-08 | 2021-11-06 | Application method of channel type element on-line analyzer |
| CN202111309258.6A Withdrawn CN113984817A (en) | 2021-09-08 | 2021-11-06 | Application method of channel-type element on-line analyzer |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202111309254.8A Withdrawn CN113984816A (en) | 2021-09-08 | 2021-11-06 | Channel type element on-line analyzer |
| CN202122701483.6U Active CN217561373U (en) | 2021-09-08 | 2021-11-06 | Channel type element on-line detection device |
| CN202122701503.XU Active CN216285004U (en) | 2021-09-08 | 2021-11-06 | On-spot mounting structure of passageway formula element on-line analyzer |
| CN202111309261.8A Active CN113984818B (en) | 2021-09-08 | 2021-11-06 | Application method of channel type element on-line analyzer |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113984818A (en) * | 2021-09-08 | 2022-01-28 | 丹东东方测控技术股份有限公司 | Channel type element on-line analyzer and application method |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5162095A (en) * | 1987-07-15 | 1992-11-10 | L'etat Francais | Method and installation for the analysis by neutron activation of a flow of material in bulk |
| CN2496019Y (en) * | 2001-09-30 | 2002-06-19 | 南京瞬发科技应用研究所 | Coal sample container and coal quatity detecting apparatus therewith |
| TW547642U (en) * | 2002-12-31 | 2003-08-11 | Chun-Mao Tseng | Ultra-trace automated mercury species analyzer (AMSA) |
| CN1632544A (en) * | 2004-12-30 | 2005-06-29 | 吉林省科仑辐射技术开发有限公司 | Neutron cement multi-element analyzer |
| WO2014179757A2 (en) * | 2013-05-03 | 2014-11-06 | Xrsciences Llc | Alternative fuels analyzer |
| US9518941B1 (en) * | 2016-07-29 | 2016-12-13 | Sabia Inc. | Weight-percent analysis for prompt gamma neutron activation substance analyzers |
| CN113984816A (en) * | 2021-09-08 | 2022-01-28 | 丹东东方测控技术股份有限公司 | Channel type element on-line analyzer |
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- 2021-11-06 CN CN202111309254.8A patent/CN113984816A/en not_active Withdrawn
- 2021-11-06 CN CN202122701483.6U patent/CN217561373U/en active Active
- 2021-11-06 CN CN202122701503.XU patent/CN216285004U/en active Active
- 2021-11-06 CN CN202111309261.8A patent/CN113984818B/en active Active
- 2021-11-06 CN CN202111309258.6A patent/CN113984817A/en not_active Withdrawn
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113984818A (en) * | 2021-09-08 | 2022-01-28 | 丹东东方测控技术股份有限公司 | Channel type element on-line analyzer and application method |
| CN113984818B (en) * | 2021-09-08 | 2024-07-26 | 丹东东方测控技术股份有限公司 | Application method of channel type element on-line analyzer |
Also Published As
| Publication number | Publication date |
|---|---|
| CN113984818B (en) | 2024-07-26 |
| CN113984818A (en) | 2022-01-28 |
| CN113984816A (en) | 2022-01-28 |
| CN217561373U (en) | 2022-10-11 |
| CN216285004U (en) | 2022-04-12 |
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