CN104176800A - Method for detecting flocculation and sedimentation effect of coal slime thickener and controlling addition of flocculant - Google Patents
Method for detecting flocculation and sedimentation effect of coal slime thickener and controlling addition of flocculant Download PDFInfo
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- CN104176800A CN104176800A CN201410429598.6A CN201410429598A CN104176800A CN 104176800 A CN104176800 A CN 104176800A CN 201410429598 A CN201410429598 A CN 201410429598A CN 104176800 A CN104176800 A CN 104176800A
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- coal slime
- compression zone
- sedimentation
- flocculation agent
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- 230000000694 effects Effects 0.000 title claims abstract description 46
- 238000005189 flocculation Methods 0.000 title claims abstract description 32
- 230000016615 flocculation Effects 0.000 title claims abstract description 32
- 239000003245 coal Substances 0.000 title claims abstract description 31
- 238000000034 method Methods 0.000 title claims abstract description 29
- 238000004062 sedimentation Methods 0.000 title abstract description 16
- 239000002562 thickening agent Substances 0.000 title abstract 5
- 230000006835 compression Effects 0.000 claims abstract description 31
- 238000007906 compression Methods 0.000 claims abstract description 31
- 238000001514 detection method Methods 0.000 claims abstract description 15
- 239000007788 liquid Substances 0.000 claims abstract description 10
- 230000003311 flocculating effect Effects 0.000 claims description 31
- 239000003795 chemical substances by application Substances 0.000 claims description 28
- 239000003814 drug Substances 0.000 claims description 22
- 239000000654 additive Substances 0.000 claims description 7
- 230000000996 additive effect Effects 0.000 claims description 7
- 239000012530 fluid Substances 0.000 claims description 7
- 238000005259 measurement Methods 0.000 claims description 6
- 239000003250 coal slurry Substances 0.000 claims description 4
- 238000002360 preparation method Methods 0.000 claims description 3
- 238000006073 displacement reaction Methods 0.000 claims description 2
- 238000005352 clarification Methods 0.000 abstract 5
- 239000013043 chemical agent Substances 0.000 abstract 2
- 239000010866 blackwater Substances 0.000 description 7
- 238000004519 manufacturing process Methods 0.000 description 5
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 5
- 230000001276 controlling effect Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- 238000010586 diagram Methods 0.000 description 1
- 230000005713 exacerbation Effects 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 238000004886 process control Methods 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 230000000007 visual effect Effects 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
Landscapes
- Separation Of Suspended Particles By Flocculating Agents (AREA)
Abstract
The invention discloses a method for detecting the flocculation and sedimentation effect of a coal slime thickener and controlling the addition of a flocculant. The method comprises the following steps that the heights of liquid levels at interfaces of every two adjacent zones of a clarification zone, a sedimentation zone, a compression zone and a concentrating zone are respectively measured by virtue of three buoys adopting liquids with different densities, the heights of the clarification zone, the sedimentation zone and the compression zone are further calculated, and the flocculation and sedimentation effects of the coal slime thickener are judged according to the measured height change of the clarification zone, the sedimentation zone and the compression zone; an expert system representing the relationships among the measured height change of the clarification zone, the sedimentation zone and the compression zone, the flocculation and sedimentation effects and the addition of the chemical agent is established, the height change of the clarification zone, the sedimentation zone and the compression zone is measured online, by combining the rough addition of the flocculant determined according to the amount of dried coal slime with fine-adjustment amount of the flocculant based on the expert system, the closed loop control over the intelligent addition of the flocculant is achieved. Due to adoption of the method, the on-line detection of the flocculation and sedimentation effect of coal slime in the thickener and the closed loop control over the addition of the chemical agent in the thickener can be achieved.
Description
Technical field
The present invention relates to a kind of Coal Clean processing and utilization and process control technology, relate in particular to a kind of coal slime concentrator flocculating setting effect detection and flocculation agent and add control method.
Background technology
It is a very important link in coal separating plant's production technique that black water is processed, because closed water circuit is the basic demand that each coal separating plant must reach, and black water is processed to such an extent that fine or notly also will directly have influence on the separating effect of size separation equipment, when slime water system severe exacerbation, can cause whole coal separating plant cannot normally move even and stop production.
Thickner is the visual plant of realizing closed water circuit, and Flocculation Settling Process is that the small coal slime particle by adding flocculation agent to make to be suspended in the difficult sedimentation in black water in black water is attached together, and forms large floc sedimentation and rapid subsidence.Flocculation agent add can not be excessive can not be not enough, if chemical feeding quantity is not enough, will cause incomplete sedimentation, do not reach the index request of closed water circuit; If chemical feeding quantity is too much, not only waste a large amount of medicaments, and because mutual repulsion between agent molecule can make black water sedimentation effect variation on the contrary.Therefore the control method that flocculation agent adds is the key that guarantees flocculating settling treatment effect.And the key that the control method that concentrator flocculating setting effect detection is flocculation agent interpolation realizes.Realizing the closed-loop control that thickner medicament adds is the utilization ratio that improves thickner, uses manpower and material resources sparingly, thereby 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 and reacts effect of settling, also has the measurement of utilization capacitive way to measure effect of settling.But aforesaid method all exists error large, and data seriously lag behind, and cannot meet Production requirement, and safeguard inconvenience, high in cost of production shortcoming.Owing to cannot realizing the online Measurement accuracy of concentrator flocculating setting effect, thus thickner medicament to add Controlling System be that open loop is controlled substantially, according to thickner pan feeding concentration and feeding, calculate the quantitative interpolation medicament of dry coal slurry amount.Cannot realize the closed loop automatization control that thickner medicament adds.
Summary of the invention
The object of this invention is to provide a kind of coal slime concentrator flocculating setting effect detection and flocculation agent interpolation control method that can realize the automatic control of closed loop that in thickner, coal slime flocculating settling effect detects online and thickner medicament adds.
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 that adopts buoy mode indirectly to measure detects coal slime concentrator flocculating setting effect, concrete three buoys that different densities liquid is housed that adopt are measured respectively settling section, negative area, the liquid level of the interface in adjacent twoth district in compression zone and enrichment region, and then calculate described settling section, the height of negative area and compression zone, according to the settling section of measuring, 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, because the method that adopts buoy mode indirectly to measure detects coal slime concentrator flocculating setting effect, calculate described settling section, the height of negative area and compression zone, according to the settling section of measuring, the height change of negative area and compression zone judges the effect of flocculating settling, and regulate flocculation agent addition according to this effect, can realize the closed loop that in thickner, coal slime flocculating settling effect detects online and thickner medicament adds controls automatically.
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 that adopts buoy mode indirectly to measure detects coal slime concentrator flocculating setting effect, three buoys that different densities liquid is equipped with in concrete employing are measured respectively the liquid level of the interface in adjacent twoth district in settling section, negative area, compression zone and enrichment region, and then calculate the height of described settling section, negative area and compression zone, according to the height change of settling section, negative area and the compression zone measured, judge the effect of flocculating settling, and regulate flocculation agent addition according to this effect.
Described buoy comprises the horizontal top plate on oval-shaped 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 plate of each buoy.
Set up the expert systems of relation between height change, flocculating settling effect and the additive amount of medicament three of settling section, negative area and compression zone, the height change of on-line measurement settling section, negative area and compression zone, determines that by dry coal slurry amount the method that the thick dosage of flocculation agent and the flocculation agent amount trimmed of carrying out based on described expert systems combine realizes flocculation agent intelligence interpolation closed-loop control.
Between the height change of described settling section, negative area and compression zone, flocculating settling effect and additive amount of medicament three, relation obtains 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 that in thickner, coal slime flocculating settling effect detects online and thickner medicament adds and automatically control.
Specific embodiment:
As shown in Figure 1, adopt the 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 interfaces.According to the height value of the not same district of measuring, 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 level and smooth level on the top of buoy connecting rod, top board position detecting device 5 is installed directly over top board, measure the variation of buoy, according to the height indicator of the buoy of measuring, calculate the variation of region interface, and then calculate the height of settling section 6, negative area 7 and compression zone 8.
By the height change of on-line measurement settling section 6, negative area 7 and compression zone 8, realize the automatic modulation of medicament, and by expert systems 16, set up settling section 6, negative area 7 and the height change of compression zone 8 and the corresponding relation of pharmaceutical quantities in this 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 device such as mounting bracket keeps its balance, by the article position measuring device 5 of buoy top, measure buoy top boards apart from the distance of level meter 5; Then the value of measuring is sent to Controlling System, calculates the height of settling section 6, negative area 7 and compression zone 8.
First according to dry coal slurry amount in supplied materials black water 1, determine preliminary additive amount of medicament 3; Secondly the settling section 6 of measuring, negative area 7 and compression zone 8 height are carried out markization to process 15 with regime of agent, by expert, be 16 system judgement medicament regulation schemes, and give medicament setter 17, and then control and carry out medicine machine 13 regulating dosage.Realize slightly adding and finely tuning the closed loop control system combining 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 adopts the height change of on-line measurement settling section 6, negative area 7 and compression zone 8 to react sedimentation and the additive amount of medicament situation of solid particulate in thickner 9, and the black water medicament of having set up based on this adds expert systems.
The above; be only the present invention's embodiment preferably, but protection scope of the present invention is not limited to this, is anyly familiar with in technical scope that those skilled in the art disclose in the present invention; the variation that can expect easily or replacement, within all should being encompassed in 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 (4)
1. a coal slime concentrator flocculating setting effect detection and flocculation agent add control method, it is characterized in that, the method that adopts buoy mode indirectly to measure detects coal slime concentrator flocculating setting effect, concrete three buoys that different densities liquid is housed that adopt are measured respectively settling section, negative area, the liquid level of the interface in adjacent twoth district in compression zone and enrichment region, and then calculate described settling section, the height of negative area and compression zone, according to the settling section of measuring, the height change of negative area and compression zone judges the effect of flocculating settling, and regulate flocculation agent addition according to this effect.
2. coal slime concentrator flocculating setting effect detection as claimed in claim 1 and flocculation agent add control method, it is characterized in that, described buoy comprises the horizontal top plate on oval-shaped 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 plate of each buoy.
3. coal slime concentrator flocculating setting effect detection as claimed in claim 2 and flocculation agent add control method, it is characterized in that, set up the expert systems of relation between height change, flocculating settling effect and the additive amount of medicament three of settling section, negative area and compression zone, the height change of on-line measurement settling section, negative area and compression zone, determines that by dry coal slurry amount the method that the thick dosage of flocculation agent and the flocculation agent amount trimmed of carrying out based on described expert systems combine realizes flocculation agent intelligence interpolation closed-loop control.
4. coal slime concentrator flocculating setting effect detection as claimed in claim 3 and flocculation agent add control method, it is characterized in that, between the height change of described settling section, negative area and compression zone, flocculating settling effect and additive amount of medicament three, relation obtains 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 CN104176800B (en) | 2015-12-09 |
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Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104858069A (en) * | 2015-06-09 | 2015-08-26 | 河南东大矿业股份有限公司 | Method for quick judging of quality of low-grade bauxite direct flotation tailing flocculating agent |
| 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 |
| CN109580437A (en) * | 2018-10-30 | 2019-04-05 | 中国神华能源股份有限公司 | Concentration basin effect of settling detection system |
| CN109626460A (en) * | 2019-02-11 | 2019-04-16 | 天津中新智冠信息技术有限公司 | Intelligent slime water treatment method and device |
| 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 |
| CN114207585A (en) * | 2019-07-08 | 2022-03-18 | 恩德莱斯和豪斯集团服务股份公司 | Method for determining the height of an interface including an interface between an upper layer and a lower layer in a thickener |
| 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 |
| CN116253491A (en) * | 2023-02-28 | 2023-06-13 | 腾达建设集团股份有限公司 | Method, device, equipment and storage medium for determining flocculation precipitation efficiency |
| CN117871353A (en) * | 2024-03-11 | 2024-04-12 | 天津美腾科技股份有限公司 | Coal slime water sedimentation detection method and system |
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Cited By (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
| CN104858069A (en) * | 2015-06-09 | 2015-08-26 | 河南东大矿业股份有限公司 | Method for quick judging of quality of low-grade bauxite direct flotation tailing flocculating agent |
| CN109580437A (en) * | 2018-10-30 | 2019-04-05 | 中国神华能源股份有限公司 | Concentration basin effect of settling detection system |
| 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 |
| 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 |
| 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 |
| CN109626460A (en) * | 2019-02-11 | 2019-04-16 | 天津中新智冠信息技术有限公司 | Intelligent slime water treatment method and device |
| CN114207585A (en) * | 2019-07-08 | 2022-03-18 | 恩德莱斯和豪斯集团服务股份公司 | Method for determining the height of an interface including an interface between an upper layer and a lower layer in a thickener |
| 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 |
| CN116253491A (en) * | 2023-02-28 | 2023-06-13 | 腾达建设集团股份有限公司 | Method, device, equipment and storage medium for determining flocculation precipitation efficiency |
| CN116253491B (en) * | 2023-02-28 | 2024-06-11 | 腾达建设集团股份有限公司 | Method, device, equipment and storage medium for determining flocculation precipitation efficiency |
| CN117871353A (en) * | 2024-03-11 | 2024-04-12 | 天津美腾科技股份有限公司 | Coal slime water sedimentation detection method and system |
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