CN104176800B - Coal slime concentrator flocculating setting effect detection and flocculation agent add control method - Google Patents
Coal slime concentrator flocculating setting effect detection and flocculation agent add control method Download PDFInfo
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- CN104176800B CN104176800B CN201410429598.6A CN201410429598A CN104176800B CN 104176800 B CN104176800 B CN 104176800B CN 201410429598 A CN201410429598 A CN 201410429598A CN 104176800 B CN104176800 B CN 104176800B
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Abstract
The invention discloses a kind of coal slime concentrator flocculating setting effect detection and flocculation agent interpolation control method, three buoys that different densities liquid is housed are adopted to measure the liquid level of the interface in adjacent twoth district in settling section, negative area, compression zone and enrichment region respectively, and then calculate the height of settling section, negative area and compression zone, the effect of flocculating settling is judged according to the height change of the settling section measured, negative area and compression zone.Set up settling section, the height change of negative area and compression zone, the expert systems of relation between flocculating settling effect and additive amount of medicament three, the height change of on-line measurement settling section, negative area and compression zone, determines the thick dosage of flocculation agent and realizes flocculation agent intelligence based on the method that the flocculation agent amount trimmed that expert systems is carried out combines to add closed-loop control by dry coal slurry amount.The closed-loop automatic control that in thickner, coal slime flocculating settling effect on-line checkingi and thickner medicament add can be realized.
Description
Technical field
The present invention relates to a kind of Coal Clean processing and utilization and process control technology, particularly relate to a kind of coal slime concentrator flocculating setting effect detection and flocculation agent interpolation control method.
Background technology
Slime water treatment is a very important link in coal separating plant's production technique, because closed water circuit is the basic demand that each coal separating plant must reach, and slime water treatment obtains and fine or notly also will directly have influence on the separating effect of size separation equipment, when slime water system severe exacerbation, whole coal separating plant can be caused normally to run and even to stop production.
Thickner is the visual plant realizing closed water circuit, and Flocculation Settling Process makes to be suspended in the small coal slime granular absorption of the difficult sedimentation in black water together by adding flocculation agent in black water, forms large floc sedimentation and rapid subsidence.Flocculation agent add can not excessive can not be not enough, if chemical feeding quantity is not enough, incomplete sedimentation will be caused, not reach the index request of closed water circuit; If chemical feeding quantity is too much, not only waste a large amount of medicament, and black water sedimentation effect can be made on the contrary to be deteriorated due to repulsion mutual between agent molecule.Therefore the control method that flocculation agent adds is the key ensureing flocculating settling treatment effect.And the key that the control method that concentrator flocculating setting effect detection is flocculation agent interpolation realizes.The closed-loop control realizing the interpolation of thickner medicament is the utilization ratio improving thickner, uses manpower and material resources sparingly, thus realizes the maximized necessary ways of coal separating plant's productivity effect.
The detection of thickner coal slime settling effect of the prior art adopts manual type more, also utilizes turbidimeter to detect overflow water turbidity to react effect of settling, also has and utilizes measurement capacitive way to measure effect of settling.But it is large that aforesaid method all exists error, and data are seriously delayed, cannot meet Production requirement, and safeguard inconvenience, high in cost of production shortcoming.Owing to cannot realize the online Measurement accuracy of concentrator flocculating setting effect, therefore thickner medicament adds Controlling System is opened loop control substantially, namely calculates the quantitative interpolation medicament of dry coal slurry amount according to thickner feed thickness and feeding.The closed loop automation control that thickner medicament adds cannot be realized.
Summary of the invention
The object of this invention is to provide a kind of coal slime concentrator flocculating setting effect detection and the flocculation agent interpolation control method that can realize the closed-loop automatic control that coal slime flocculating settling effect on-line checkingi and thickner medicament add in thickner.
The object of the invention is to be achieved through the following technical solutions:
Coal slime concentrator flocculating setting effect detection of the present invention and flocculation agent add control method, the method of buoy system indirect inspection is adopted to detect coal slime concentrator flocculating setting effect, three buoys that different densities liquid is equipped with in concrete employing measure settling section respectively, negative area, the liquid level of the interface in two district adjacent with enrichment region, compression zone, and then calculate described settling section, the height of negative area and compression zone, according to the settling section measured, the height change of negative area and compression zone judges the effect of flocculating settling, and regulate flocculation agent addition according to this effect.
As seen from the above technical solution provided by the invention, the coal slime concentrator flocculating setting effect detection that the embodiment of the present invention provides and flocculation agent add control method, owing to adopting the method for buoy system indirect inspection, coal slime concentrator flocculating setting effect is detected, calculate described settling section, the height of negative area and compression zone, according to the settling section measured, the height change of negative area and compression zone judges the effect of flocculating settling, and regulate flocculation agent addition according to this effect, the closed-loop automatic control that in thickner, coal slime flocculating settling effect on-line checkingi and thickner medicament add can be realized.
Accompanying drawing explanation
Fig. 1 is the principle schematic that in the embodiment of the present invention, concentrator flocculating setting detects;
Fig. 2 is that embodiment of the present invention Chinese medicine adds closed loop control system block diagram.
Embodiment
To be described in further detail the embodiment of the present invention below.
Coal slime concentrator flocculating setting effect detection of the present invention and flocculation agent add control method, its preferably embodiment be:
The method of buoy system indirect inspection is adopted to detect coal slime concentrator flocculating setting effect, three buoys that different densities liquid is equipped with in concrete employing measure the liquid level of the interface in adjacent twoth district in settling section, negative area, compression zone and enrichment region respectively, and then calculate the height of described settling section, negative area and compression zone, judge the effect of flocculating settling according to the height change of the settling section measured, negative area and compression zone, and regulate flocculation agent addition according to this effect.
Described buoy comprises the horizontal top on oval density fluids kettle, connecting rod and connecting rod top, in described density fluids kettle, the density fluids of preparation can make three buoys just be in respectively on the interface in adjacent twoth district in described settling section, negative area, compression zone and enrichment region, is separately installed with buoy top board displacement measuring device directly over the horizontal top of each buoy.
Set up settling section, the height change of negative area and compression zone, the expert systems of relation between flocculating settling effect and additive amount of medicament three, the height change of on-line measurement settling section, negative area and compression zone, determines the thick dosage of flocculation agent and realizes flocculation agent intelligence based on the method that the flocculation agent amount trimmed that described expert systems is carried out combines to add closed-loop control by dry coal slurry amount.
The height change of described settling section, negative area and compression zone, between flocculating settling effect and additive amount of medicament three, relation is obtained by experience or data statistics in the past.
Coal slime concentrator flocculating setting effect detection of the present invention and flocculation agent add control method, can realize the closed-loop automatic control that in thickner, coal slime flocculating settling effect on-line checkingi and thickner medicament add.
Specific embodiment:
As shown in Figure 1, adopt buoy 2,3,4 that different densities liquid is housed to measure the liquid level of settling section 6, negative area 7, compression zone 8 and enrichment region 9 interface.According to the height value of the not same district measured, judge the effect of sedimentation, optimize additive amount of medicament.
The density fluids of three buoy 2,3,4 preparations can make buoy just be on the interface of different zones, and there is the top board of a smooth level on the top of buoy connecting rod, ceiling location proofing unit 5 is installed directly over top board, measure the change of buoy, calculate the change of region interface according to the height indicator of buoy measured, and then calculate the height of settling section 6, negative area 7 and compression zone 8.
Realized the automatic modulation of medicament by the height change of on-line measurement settling section 6, negative area 7 and compression zone 8, and established settling section 6, negative area 7 and the height change of compression zone 8 and the corresponding relation of pharmaceutical quantities by expert systems 16 in the process.
The present invention works in the following manner:
As shown in Figure 2, in production, three buoys 2,3,4 are vertically put into thickner 9, and the devices such as mounting bracket keep it to balance, measured the distance of buoy top board distance level meter 5 by the article position measuring device 5 above buoy; Then the value measured is sent to Controlling System, calculates the height of settling section 6, negative area 7 and compression zone 8.
First preliminary additive amount of medicament 3 is determined according to dry coal slurry amount in supplied materials black water 1; Secondly carry out markization process 15 to the settling section 6 measured, negative area 7 and compression zone 8 height and regime of agent, be that 16 systems judge medicament regulation scheme by expert, and give medicament setter 17, and then control to perform medicine machine 13 regulating dosage.Realize slightly adding and finely tuning the closed loop control system combined of medicament.
Coal slime concentrator flocculating setting effect detection of the present invention and flocculation agent add control method and have following features:
The present invention adopt on-line measurement settling section 6, negative area 7 and compression zone 8 height change to react sedimentation and the additive amount of medicament situation of solid particulate in thickner 9, the black water medicament established based on this adds expert systems.
The above; be only the present invention's preferably embodiment, but protection scope of the present invention is not limited thereto, is anyly familiar with those skilled in the art in the technical scope that the present invention discloses; the change that can expect easily or replacement, all should be encompassed within protection scope of the present invention.Therefore, protection scope of the present invention should be as the criterion with the protection domain of claims.
Claims (1)
1. a coal slime concentrator flocculating setting effect detection and flocculation agent add control method, it is characterized in that, the method of buoy system indirect inspection is adopted to detect coal slime concentrator flocculating setting effect, three buoys that different densities liquid is equipped with in concrete employing measure settling section respectively, negative area, the liquid level of the interface in two district adjacent with enrichment region, compression zone, and then calculate described settling section, the height of negative area and compression zone, according to the settling section measured, the height change of negative area and compression zone judges the effect of flocculating settling, and regulate flocculation agent addition according to this effect,
Described buoy comprises the horizontal top on oval density fluids kettle, connecting rod and connecting rod top, in described density fluids kettle, the density fluids of preparation can make three buoys just be in respectively on the interface in adjacent twoth district in described settling section, negative area, compression zone and enrichment region, is separately installed with buoy top board displacement measuring device directly over the horizontal top of each buoy;
Set up settling section, the height change of negative area and compression zone, the expert systems of relation between flocculating settling effect and additive amount of medicament three, the height change of on-line measurement settling section, negative area and compression zone, determines the thick dosage of flocculation agent and realizes flocculation agent intelligence based on the method that the flocculation agent amount trimmed that described expert systems is carried out combines to add closed-loop control by dry coal slurry amount;
The height change of described settling section, negative area and compression zone, between flocculating settling effect and additive amount of medicament three, relation is obtained by experience or data statistics in the past.
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| CN201410429598.6A CN104176800B (en) | 2014-08-27 | 2014-08-27 | Coal slime concentrator flocculating setting effect detection and flocculation agent add control method |
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| CN201410429598.6A CN104176800B (en) | 2014-08-27 | 2014-08-27 | Coal slime concentrator flocculating setting effect detection and flocculation agent add control method |
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| CN104176800B true CN104176800B (en) | 2015-12-09 |
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| CN104858069B (en) * | 2015-06-09 | 2017-09-29 | 河南东大科技股份有限公司 | The quick method for judging that low-grade bauxite direct flotation mine tailing flocculant is good and bad |
| CN109580437B (en) * | 2018-10-30 | 2022-03-22 | 中国神华能源股份有限公司 | Sedimentation effect detection system of concentration tank |
| CN109574172A (en) * | 2019-02-11 | 2019-04-05 | 天津中新智冠信息技术有限公司 | Intelligent slime water system |
| CN109626460B (en) * | 2019-02-11 | 2022-05-17 | 天津中新智冠信息技术有限公司 | Intelligent slime water treatment method and device |
| DE102019118413A1 (en) * | 2019-07-08 | 2021-01-14 | Endress+Hauser Group Services Ag | METHOD OF DETERMINING AN INTERFACE HEIGHT OF AN INTERFACE BETWEEN AN UPPER AND A LOWER LAYER CONTAINED IN A THICKER |
| CN110776067A (en) * | 2019-09-27 | 2020-02-11 | 宁波国谱环保科技有限公司 | Sewage treatment automatic dosing device based on image recognition and feedback mechanism thereof |
| CN112798480A (en) * | 2020-12-22 | 2021-05-14 | 兖矿国宏化工有限责任公司 | Method for detecting quality of polyacrylamide |
| CN114307264A (en) * | 2021-12-17 | 2022-04-12 | 中国矿业大学 | Device and method for rapidly detecting height of clarified water layer of slime water thickener |
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| CN2147609Y (en) * | 1992-08-09 | 1993-11-24 | 耿永喜 | Liquid intensity and float condition experiment device |
| CN201707107U (en) * | 2010-07-02 | 2011-01-12 | 武汉钢铁(集团)公司 | Gasholder piston oil groove oil level and water level detection device |
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| CN2147609Y (en) * | 1992-08-09 | 1993-11-24 | 耿永喜 | Liquid intensity and float condition experiment device |
| CN201707107U (en) * | 2010-07-02 | 2011-01-12 | 武汉钢铁(集团)公司 | Gasholder piston oil groove oil level and water level detection device |
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| 浓缩机絮凝沉降检测分析系统设计;王卫东 等;《工矿自动化》;20130831;第39卷(第8期);第25-27页引言部分 * |
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