CN105233530A - Coal slime water deep clarification system, and treatment method thereof - Google Patents
Coal slime water deep clarification system, and treatment method thereof Download PDFInfo
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- CN105233530A CN105233530A CN201510616603.9A CN201510616603A CN105233530A CN 105233530 A CN105233530 A CN 105233530A CN 201510616603 A CN201510616603 A CN 201510616603A CN 105233530 A CN105233530 A CN 105233530A
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Abstract
The invention discloses a coal slime water deep clarification system, and a treatment method thereof. The coal slime water deep clarification system comprises a thickener; a thickener internal concentration on-line monitoring system which comprises a calibration part and a thickener internal concentration on-line monitoring part; a coal slime water automatic reagent feeding system which comprises successively connected a coal slime water feeding detection unit, a monitoring operation unit, and a reagent feeding unit; a reagent dispersing system which comprises a double-impeller heating high-efficiency preparation barrel communicated with the reagent feeding unit, and a reagent feeding buffer barrel; the bottom of the reagent feeding buffer barrel is provided with two feed outlets which are used for communicating a constant amount reagent feeding channel and a variable amount reagent feeding channel; reagents in the constant amount reagent feeding channel and the variable amount reagent feeding channel are both delivered into a coal slime water feed inlet pipe; the thickener internal concentration on-line monitoring system, the coal slime water automatic reagent feeding system, and the reagent dispersing system are all connected with a control system via electric connection. The coal slime water deep clarification system is capable of realizing real-time monitoring and correction, and saving reagents, and is more perfect.
Description
Technical field
The invention belongs to coal preparation technology field, be specifically related to a kind of black water degree of depth clarification system and treatment process thereof.
Background technology
Slime water treatment is all one of most important ring in all coal preparation plants except dry separation.The quality of slime water treatment technique, whether improve the production directly affecting coal preparation plant and whether can carry out smoothly, be one of evaluation coal preparation plant's technology and the most important factor of managerial skills, the good bad influence of slime water treatment effect even determines economic benefit and the social benefit in a mining area.Slime water system is responsible for the effect of reclaiming coal slime, recycle-water resource, and its final purpose meets environmental requirement to realize closed water circuit.
When slime water treatment, technical staff, usually according to CONCENTRATION DISTRIBUTION material bed in concentration basin, takes pan feeding pipeline before thickener directly to add the method for flocculating agent and flocculant, comparatively fast purifies, precipitates object to reach black water.The most common way is both at home and abroad at present, first (utilize " coal slime feeler lever " by manual method, a kind of stock, on have scale can visit the thickness of bed in thickener) elicite thickness material bed in concentrator, rule of thumb judge add flocculating agent and flocculation dosage is increase or reduce.
In prior art, Automatic Dosing mode more advanced is both at home and abroad Chinese patent literature CN1958116A disclosed " automatic adding flocculant system and method thereof ", it detects concentration and the flow of black water according to densimeter and flowmeter, flocculant is added by industrial computer control pump, sensor detects the concentration of overflow water, judge overflow water concentration by industrial computer again, determine whether start pump to dosing in concentration basin, this system and method has been saved flocculant usage, has been improve clean coal yield, but there is following problem, it is caused not promote the use in coal preparation plant: (1) system imperfection, a kind of Automatic Dosing method is only provided, how explanation is not added medicament and is taked which kind of means dispersions, to reach degree of depth clarification black water and the object of saving medicament, (2) what this system adopted is open loop mode, to added pharmaceutical quantities implementing monitoring, feedback and correction, in use often cannot occur that actual pharmaceutical quantities of adding has deviation with setting addition, cause the waste of medicament, (3) using thickener overflow concentration as unique performance assessment criteria, be not inconsistent with actual conditions, in the clarification of the black water degree of depth, engineers and technicians can be concerned about two problems usually, first be the CONCENTRATION DISTRIBUTION situation of bed in thickener, next is overflow water concentration, if be only concerned about overflow water concentration and ignore bed change in thickener, add medicament simply, thickener " pressure rake " phenomenon will be caused (also namely because bed in thickener is too thick, concentration is too large, cause the rake stop motion of circular motion, and cause the phenomenon that material cannot be discharged from thickener underflow mouth), the normal production of coal preparation plant will be had a strong impact on.
Therefore, those skilled in the art need badly provide a kind of can monitor in real time correction, more save pharmaceutical quantities, more perfect black water degree of depth clarification system.
Summary of the invention
For above-mentioned deficiency, the invention provides a kind of can monitor in real time correction, more save pharmaceutical quantities, more perfect black water degree of depth clarification system and treatment process thereof.
One of for achieving the above object provide a kind of black water degree of depth clarification system, present invention employs following technical scheme:
A kind of black water degree of depth clarification system, comprises thickener, also comprises following part:
Concentration online monitoring system in thickener, this system comprises concentration on-line checkingi part in correction portion and thickener, and correction portion corrects the data of concentration on-line checkingi part in thickener;
Slime water automatic dosing system, this automatic medicament feeding system comprises successively along the black water pan feeding detecting unit, policer operation unit, the medicament adding device that connect; In described thickener, the data signal output of concentration on-line checkingi part, black water pan feeding detecting unit is all connected with policer operation unit, and the command end of policer operation unit is connected with medicament adding device;
Medicament decentralized system, this system comprises the bilobed wheel heating being communicated with medicament adding device and efficiently prepares bucket and medicament interpolation buffer barrel, two discharging openings are provided with bottom medicament interpolation buffer barrel, one of them whereabouts screw pump and medicament buffer barrel, electric gate valve, constant current medicament flowmeter, multiple jet nozzle form constant dosing passage, and another whereabouts diaphragm metering pump and variable medicament flowmeter, jet nozzle form variable dosing passage; The medicament of constant dosing passage and variable dosing passage all imports in black water feeding pipe, and jet nozzle towards all consistent with pan feeding direction in black water feeding pipe;
The control system be made up of PLC, in thickener, concentration online monitoring system, slime water automatic dosing system, medicament decentralized system are all electrically connected with control system.
Preferably, described correction portion is set to and samples material in thickener and the intelligent concentration pot of detectable concentration fast; In described thickener, concentration on-line checkingi part is set to density tester in thickener.
Further, described intelligent concentration pot comprises cubic type shell body and is arranged in shell as the tubular inner bag collecting black water; Described shell body epimere is provided with draw-in groove, stage casing is provided with handle fixture and internal bladder support, draw-in groove and internal bladder support are all for fixing inner bag, hypomere is installed with display, also sensor is installed with bottom the seal cavity that shell body and inner bag surround, the upper and lower both sides of sensor are respectively equipped with upper and lower gripper shoe, and the left and right sides of upper and lower gripper shoe is respectively equipped with upper and lower gripper shoe baffle plate; Described sensor is connected with display, and lower sensor is converted to slime water flow by gathering the weight signal come and shows over the display in working order;
In described thickener, density tester is set to and multiple pressure transmitter is vertically uniformly distributed the testing arrangement be fixed in airtight container, and the voltage output signal of pressure transmitter adopts data collecting card collection.
Further, described pressure transmitter adopts diffusion silicon type pressure transmitter; Described data collecting card adopts MPS-010602 Multifunctional USB data acquisition card.
Further, described black water pan feeding detecting unit is set to electromagnetic flowmeter and differential densimeter, be respectively used to the mineral slurry flux and the pulp density that detect thickener feeding pipe, the touch-screen that described policer operation unit comprises PLC and is electrically connected with PLC, described medicament adding device comprises measuring pump.
Further, described bilobed wheel heating is efficiently prepared bucket and is comprised the Double-impeller stirrer being fixed on upper end, staving axis, and the periphery of Double-impeller stirrer is installed with sleeve, and the axis of sleeve overlaps with the axis of agitator; Described sleeve is provided with the first circulation port, and described Double-impeller stirrer is provided with the second circulation port on upper impeller, and the first circulation port, the second circulation port coordinate with lower impeller, are formed in the turbulence flow flied of agitator inner loop; The inwall that bucket is efficiently prepared in bilobed wheel heating is also evenly provided with multiple resistance heating coil; Efficiently prepare in bucket in bilobed wheel heating and be also provided with multiple viscosity detection probe be distributed in bucket, described viscosity detection probe is electrically connected with policer operation unit;
Described rod impeller stirs in buffer barrel and is provided with liquid level sensor I, many rods impeller-agitator, and liquid level sensor I is electrically connected with PLC.
Further, in described medicament buffer barrel, be designed with the liquid level sensor II be electrically connected with PLC, carried out the flow of regulating agent by the data of constant current medicament flowmeter, the open degree that correspondingly controls electric gate valve, and then control liquid level and be between setting district.
Further, multiple jet nozzle is towards on the identical axis being arranged on thickener feeding pipe; And the pipe-line mixer of abundant confection and black water is also installed on the pipeline of the downstream part of jet nozzle, thickener feeding pipe.
Further, described pipe-line mixer is set to the many groups liquid mixed cell installed in the duct, and each mixed cell is made up of by predetermined angular intersection multiple fixed blade.
Further, described bilobed wheel generates heat to efficiently preparing in bucket and controls the temperature of liquid medicine at 40 to 50 DEG C by resistance heating coil.
Two of object of the present invention is to provide a kind for the treatment of process of above-mentioned black water degree of depth clarification system, specifically comprises following operation:
Material bed change in thickener is detected in real time by density tester in thickener in concentration online monitoring system in S1, thickener, data acquisition, concentration or density isopleth and cloud atlas is drawn in thickener by software for calculation, CONCENTRATION STATE in display thickener, give the alarm when concentration transfinites, and then adjustment thickener chemical feeding quantity; Meanwhile, by after intelligent concentration pot sampling monitoring in this on-line monitoring process, periodic maintenance and Data correction are carried out to concentration online monitoring system in thickener;
After concentration in S2, thickener is sent to slime water automatic dosing system in real time, first black water pan feeding detecting unit detects mineral slurry flux and the pulp density of thickener feeding pipe by electromagnetic flowmeter and differential densimeter, data-signal transfers to PLC, flow is multiplied with concentration and calculates total dry coal slurry amount, and various data all show on the touchscreen;
By dispatcher according to display data setup control parameter on the touchscreen, then calculate additive amount of medicament by PLC according to the data-signal of setup parameter and collection;
S3, set additive amount of medicament after, the bilobed wheel heating that medicament adds medicament decentralized system to is efficiently prepared in bucket, form circulation turbulence flow flied, at 40 to 50 DEG C, medicament rapid stirring dissolves, as multiple viscosity detection probe data all meet setting value, namely open pan feeding pump and solution is exported to rod impeller stirring buffer barrel, liquid level sensor I detects material liquid level in bucket, until liquid level meets the requirements; Many rods impeller-agitator slowly runs, and maintains the state having prepared flocculant;
Bottom S4, medicament buffer barrel, the pump of two discharging openings is opened, one of them discharging opening solution removes constant dosing passage, open degree through electric gate valve carrys out the flow of regulating agent, another discharging opening solution removes variable dosing passage, the medicament of two dosing passages all through jet nozzle ejection, more finally flows into thickener with the black water flowed into from thickener feeding pipe after pipe-line mixer fully mixes.
Beneficial effect of the present invention is:
1), concentration online monitoring system in thickener of the present invention, slime water automatic dosing system, medicament decentralized system, control system coordinates the black water degree of depth clarification system forming complete set jointly, greatly improve with the treatment process automaticity of this system adaptation, considerably reduce the input of manpower and materials, in thickener, concentration online monitoring system can be monitored in real time to the best medicament addition of native system, feed back to slime water automatic dosing system, drive the Automatic Dosing of medicament adding device by PLC, thus revise in real time; After the medicament inflow medicament decentralized system that medicament adding device is quantitative fully dissolves dispersion, the multiple jet nozzle in two dosing passages and black water flow into spraying in the same way, and medicament is more even with mixing of black water, and then more saves pharmaceutical quantities.
2), in the present invention, in intelligent concentration pot, the upper and lower both sides of sensor are respectively equipped with upper and lower gripper shoe, and the left and right sides of upper and lower gripper shoe is respectively equipped with upper and lower gripper shoe baffle plate, ensure that lower sensor is converted to slime water flow by gathering the weight signal come and shows the reliability of data over the display in working order;
Intelligence concentration pot can carry out material object sampling at production gap working concentration camshaft for sample to set point in thickener, after intelligent concentration pot detects fast, whole test macro is calibrated, guarantee the accuracy of concentration detection system in thickener, concentration on-line detecting system in thickener, material bed change in real-time detection thickener, data acquisition, to draw in thickener concentration or density isopleth and cloud atlas by software for calculation, for chemical feeding quantity, pan feeding feeds and underflow discharge provides technological guidance.
3), Chinese medicine adding device of the present invention is the final execution link of slime water automatic dosing system, and system calculates best flocculating agent at this concentration and flocculant dose according to total dry coal slurry amount, carries out dosing by measuring pump and electrically operated valve.The continuous data message fed back according to concentration detection system in actual slime water flow and flow and thickener simultaneously, calculate the difference of additive amount of medicament and constant chemical feeding quantity, come by the diaphragm metering pump of control variables dosing passage, be conducive to additive amount of medicament to put in place rapidly, eliminate the hysteresis quality that medicament adds.After medicament falls into medicament decentralized system, the general nonvoluntary change aperture of the electric gate valve in constant dosing passage, unless ature of coal generation great change, is conducive to the stable and accurate of medicine system.On variable dosing passage, diaphragm metering pump discharge nozzle place is provided with flowmeter, because measuring pump is rotating machinery, the wearing and tearing of himself moving component, As time goes on measuring pump output quantity and metering may be caused to there is error, in this ring layout closed-circuit system, be conducive to measuring pump accurate measurement and correction.
4), in the present invention agitator is set to bilobed wheel heating and efficiently prepares bucket, and compared with traditional agitator, its advantage is: 1. impeller outer has sleeve, and sleeve has circulation port, can promote the dissolving of medicament; 2. used impeller is bilobed wheel, and upper impeller also has circulation port, coordinates, form just right turbulence flow flied with lower impeller; 3. agitator inwall is provided with 2 groups of resistance heating coils, and the temperature of liquid medicine controls at 40 to 50 DEG C, is conducive to the rapid solution of medicament, ensure that medicament rapid solution in the winter time.4. be provided with multiple solution viscosity detection probe in bucket, viscosity detection probe is electrically connected with policer operation unit, as multiple viscosity detection probe data all meet setting value, illustrates prepared by solution, realizes the automatic monitoring of solution preparing processes.
5), the multiple jet nozzle of the present invention is towards on the identical axis being arranged on thickener feeding pipe, make liquid medicine jet in the confined space, form Liu He district, basic flow region, recirculating zone, Guan Liuqu, present the flow behavior of pipe stream completely compared with far region in downstream, facilitate the Homogeneous phase mixing of medicament and black water, for the saving of pharmaceutical quantities is given security.
6), the present invention is also provided with pipe-line mixer on the pipeline of the downstream part of jet nozzle, thickener feeding pipe, that some groups of liquid mixed cells are installed in the duct, each mixed cell to be intersected by predetermined angular by the fixed blade of some and forms, and is conducive to mixing further of medicament and black water.
Accompanying drawing explanation
Fig. 1 is the flow chart of black water degree of depth clarification system of the present invention.
Fig. 2 is the flow chart of concentration online monitoring system in thickener of the present invention.
Fig. 3 is the flow chart of slime water automatic dosing system of the present invention.
Fig. 4 is for the present invention is to the operational flowchart of density tester institute image data in thickener.
Fig. 5 is the equipment connection schematic diagram of black water degree of depth clarification system of the present invention.
Fig. 6 is the structure schematic diagram of the present invention's intelligence concentration pot.
Fig. 7 is the structure schematic diagram of density tester in thickener of the present invention.
Fig. 8 is the configuration diagram that bucket and rod impeller stirring buffer barrel are efficiently prepared in bilobed wheel of the present invention heating.
Fig. 9 is the main TV structure schematic diagram of jet nozzle in the present invention.
Figure 10 is the top view of jet nozzle in the present invention.
In figure, the implication of label symbol is as follows:
Concentration online monitoring system A1-intelligence concentration pot A11-shell body in A-thickener
A111-draw-in groove A112-handle fixture A113-internal bladder support A114-display
A12-inner bag A13-sensors A 131-upper backup pad A132-lower supporting plate
Density tester in A133-upper backup pad baffle plate A134-lower supporting plate baffle plate A2-thickener
A21-pressure transmitter
The differential densimeter of B-slime water automatic dosing system B1-electromagnetic flowmeter B2-
Bucket C2-screw pump is efficiently prepared in the heating of C-medicament decentralized system C1-bilobed wheel
Impeller on C11-Double-impeller stirrer C12-sleeve C 120-first circulation port C13-
Impeller C15-resistance heating coil C16-viscosity detection probe C3-medicament buffer barrel C30-liquid level sensor II C4-electric gate valve under C130-second circulation port C14-
C5-constant current medicament flowmeter C6-jet nozzle C60-guide vane C7-pipe-line mixer
C8-diaphragm metering pump C9-variable medicament flowmeter
C10-rod impeller stirs buffer barrel C100-liquid level sensor I C101-many rods impeller-agitator D-thickener
Detailed description of the invention
Below in conjunction with the accompanying drawing in the embodiment of the present invention, the technical scheme in the present invention is clearly and completely described.Based on the embodiment in the present invention, those of ordinary skill in the art, not making the every other embodiment obtained under creative work prerequisite, belong to the scope of protection of the invention.
Embodiment 1. 1 kinds of black water degree of depth clarification systems
As shown in Fig. 1 ~ 5, a kind of black water degree of depth clarification system, comprises thickener D, also comprises following part:
Concentration online monitoring system A in thickener, this system comprises concentration on-line checkingi part in correction portion and thickener, and correction portion corrects the data of concentration on-line checkingi part in thickener;
Slime water automatic dosing system B, this automatic medicament feeding system comprises successively along the black water pan feeding detecting unit, policer operation unit, the medicament adding device that connect; In described thickener, the data signal output of concentration on-line checkingi part, black water pan feeding detecting unit is all connected with policer operation unit, and the command end of policer operation unit is connected with medicament adding device;
Medicament decentralized system C, bucket C1 is efficiently prepared in the bilobed wheel heating that this system comprises and is communicated with medicament adding device, receive medicament, the rod impeller of depot preparation stirs bottom buffer barrel C10 and is provided with two discharging openings, one of them whereabouts screw pump C2 and medicament buffer barrel C3, electric gate valve C4, constant current medicament flowmeter C5, multiple jet nozzle C6 form constant dosing passage, and another whereabouts diaphragm metering pump C8 and variable medicament flowmeter C9, jet nozzle C6 form variable dosing passage; The medicament of constant dosing passage and variable dosing passage all imports in black water feeding pipe, and jet nozzle C6 towards all consistent with pan feeding direction in black water feeding pipe;
The control system be made up of PLC, in thickener, concentration online monitoring system, slime water automatic dosing system, medicament decentralized system are all electrically connected with control system.
Wherein, described correction portion is set to and samples material in thickener and the intelligent concentration pot A1 of detectable concentration fast; In described thickener, concentration on-line checkingi part is set to density tester A2 in thickener.
As shown in Figure 6, described intelligent concentration pot A1 comprises cubic type shell body A11 and is arranged in shell as the tubular inner bag A12 collecting black water; Described shell body A11 epimere is provided with draw-in groove A111, stage casing is provided with handle fixture A112 and internal bladder support A113, draw-in groove A111 and internal bladder support A113 is all for fixing inner bag A12, hypomere is installed with display A114, sensors A 13 is also installed with bottom the seal cavity that shell body A11 and inner bag A12 surrounds, the upper and lower both sides of sensors A 13 are respectively equipped with upper and lower gripper shoe A131, A132, and the left and right sides of upper and lower gripper shoe A131, A132 is respectively equipped with upper and lower gripper shoe baffle plate A133, A134; Described sensors A 13 is connected with display A114, and lower sensor A13 is converted to slime water flow by gathering the weight signal come and is presented on display A114 in working order;
As shown in Figure 7, in described thickener, density tester A2 is set to and multiple pressure transmitter A21 is vertically uniformly distributed the testing arrangement be fixed in airtight container; The voltage output signal of pressure transmitter A21 adopts data collecting card collection.The data that in thickener, density tester A2 gathers gained to draw in thickener concentration or density isopleth and cloud atlas by software for calculation, for chemical feeding quantity, pan feeding feeds and underflow discharge provides technological guidance, concrete, software for calculation is to the handling process of data as shown in Figure 4.The voltage output signal of pressure transmitter A21 adopts data collecting card collection.
Wherein, pressure transmitter A21 adopts diffusion silicon type pressure transmitter; Data collecting card adopts MPS-010602 Multifunctional USB data acquisition card.
As shown in Figure 1,5, described black water pan feeding detecting unit is set to electromagnetic flowmeter B1 and differential densimeter B2, be respectively used to the mineral slurry flux and the pulp density that detect thickener feeding pipe, the touch-screen that described policer operation unit comprises PLC and is electrically connected with PLC, described medicament adding device comprises measuring pump.
As shown in Figure 8, described bilobed wheel heating is efficiently prepared bucket C1 and is comprised the Double-impeller stirrer C11 being fixed on upper end, staving axis, and the periphery of Double-impeller stirrer C11 is installed with sleeve C 12, and the axis of sleeve C 12 overlaps with the axis of agitator; Described sleeve C 12 is provided with the first circulation port C120, and described Double-impeller stirrer is provided with the second circulation port C130 on upper impeller C13, and the first circulation port C120, the second circulation port C130 coordinate with lower impeller C14, are formed in the turbulence flow flied of agitator inner loop; The inwall that bucket C1 is efficiently prepared in bilobed wheel heating is also evenly provided with multiple resistance heating coil C15.
Efficiently prepare in bucket C1 in bilobed wheel heating some viscosity detection probe C16 be installed, viscosity detection probe C16 be disposed at equal distance in bucket, detection data are transferred to policer operation unit by signal transmission unit by viscosity detection probe C16.As multiple viscosity detection probe C16 data all meet setting value, illustrate prepared by flocculation medicament, namely open pan feeding pump and solution is exported to rod impeller stirring buffer barrel C10.
Rod impeller stirs in buffer barrel C10 and is provided with liquid level sensor I C100, many rods impeller-agitator C101.Liquid level sensor I C100 is for detecting material liquid level in bucket; Many rods impeller-agitator C101 slowly runs, and maintains the state having prepared flocculant.
As shown in Figure 5, liquid level sensor II C30 be electrically connected with PLC is designed with in described medicament buffer barrel C3, carry out the flow of regulating agent by the data of constant current medicament flowmeter C5, the correspondingly open degree of control electric gate valve C4, and then control liquid level is between setting district.
Multiple jet nozzle C6 is towards on the identical axis being arranged on thickener feeding pipe; And the pipe-line mixer C7 of abundant confection and black water is also installed on the pipeline of the downstream part of jet nozzle C6, thickener D feeding pipe.
As shown in Fig. 9,10, be provided with the guide vane C60 that black water formation eddy flow in thickener feeding pipe is closed in an assembly in described jet nozzle C6, described guide vane C60 is set to 4.
Described pipe-line mixer C7 is set to the many groups liquid mixed cell installed in the duct, and each mixed cell is made up of by predetermined angular intersection multiple fixed blade.
Described bilobed wheel generates heat to efficiently preparing in bucket C1 and controls the temperature of liquid medicine at 40 to 50 DEG C by resistance heating coil C15.
The treatment process of embodiment 2. 1 kinds of black water degree of depth clarification systems
This treatment process specifically comprises following operation:
Material bed change in thickener D is detected in real time by density tester A2 in thickener in concentration online monitoring system A in S1, thickener, data acquisition, concentration or density isopleth and cloud atlas is drawn in thickener D by software for calculation, CONCENTRATION STATE in display thickener D, give the alarm when concentration transfinites, and then adjustment thickener chemical feeding quantity; Meanwhile, by after thickener intelligence concentration pot A1 sampling monitoring in this on-line monitoring process, periodic maintenance and Data correction are carried out to concentration on-line detecting system A in thickener, as shown in Figure 1, 2 concrete;
S2, as shown in Figure 1,3, after concentration in thickener D is sent to slime water automatic dosing system B in real time, first black water pan feeding detecting unit detects mineral slurry flux and the pulp density of thickener D feeding pipe by electromagnetic flowmeter B1 and differential densimeter B2, data-signal transfers to PLC, flow is multiplied with concentration and calculates total dry coal slurry amount, and various data all show on the touchscreen; By dispatcher according to display data setup control parameter on the touchscreen, then calculate best additive amount of medicament by PLC according to the data-signal of setup parameter and collection; The continuous data message fed back according to on-line monitoring system A in actual slime water flow and flow and thickener simultaneously, calculates chemical feeding quantity, adjusts in real time additive amount of medicament by controlling measuring pump; For specific coal preparation plant, black water character is limited at a period of time undulating value, and medicament interpolation completes primarily of constant dosing passage; The difference calculating additive amount of medicament and constant chemical feeding quantity is completed by variable medicament channel, is conducive to additive amount of medicament and puts in place rapidly, eliminates the hysteresis quality that medicament adds; The pipeline of variable dosing passage is also provided with flowmeter, and for detecting the output quantity of diaphragm metering pump, detected value and the variable of measuring pump own contrast, and realize the feedback of data and the monitoring of measuring pump duty;
Wherein, slime water automatic dosing system B is provided with fully automatic mode and semiautomatic-mode: under fully automatic mode, and PLC calculates flocculating agent and the flocculant of required interpolation automatically according to data such as the slime water flow detected, flows, and adds; Under manual mode, post driver to the data be shown on touch-screen, manually arranges the addition of flocculating agent and flocculant according to system acquisition, and PLC calculates the addition of medicament according to given controling parameters;
Then, post driver exports control signal again and drives measuring pump and electrically operated valve to carry out Automatic Dosing; The continuous data message fed back according to concentration online monitoring system A in actual slime water flow and flow and thickener simultaneously, calculates chemical feeding quantity, regulates in real time additive amount of medicament by controlling measuring pump; And PLC is reserved with communication interface, system data can be transferred to dispatching office, monitor;
S3, as shown in Fig. 5,7, after setting additive amount of medicament, the bilobed wheel heating that medicament adds medicament decentralized system C to is efficiently prepared in bucket C1, form circulation turbulence flow flied, at 40 to 50 DEG C, medicament rapid stirring dissolves, as multiple viscosity detection probe C16 data all meet setting value, namely open pan feeding pump and solution pump is delivered to rod impeller stirring buffer barrel C10, rod impeller stirs in buffer barrel C10 and is provided with liquid level sensor I C100, many rods impeller-agitator C101.Liquid level sensor I C100, for detecting material liquid level in bucket, detects data according to material liquid level in medicament buffer barrel, calculates the pharmaceutical quantities consumed; Many rods impeller-agitator C101 slowly runs, and maintains the state having prepared flocculant;
Liquid medicine after dissolving exports many rods impeller to and stirs buffer barrel C10, this bottom of the barrel two discharging openings, one of them discharging opening solution removes constant dosing passage, constant dosing passage is designed with liquid level sensor II C30 in medicament buffer barrel C3, liquid level is made to be between setting district, for stable, the constant of medicament in constant dosing passage flow into and give security, wherein, constant medicament flowmeter C5 provides Data support for the adjustment of electric gate valve C4, then carrys out the constant flow rate of regulating agent through the open degree of electric gate valve; Another discharging opening solution removes variable dosing passage, and the medicament of two dosing passages all sprays through jet nozzle C6; Because jet nozzle C6 is installed on the axis of thickener D feeding pipe, and towards all consistent with pan feeding direction in black water feeding pipe, ensure that the jet in the confined space, thus with the black water flowed into from thickener D feeding pipe through pipe-line mixer C7 is full and uniform mix after, final flow into thickener D.
Claims (10)
1. a black water degree of depth clarification system, comprises thickener (D), characterized by further comprising following part:
Concentration online monitoring system (A) in thickener, this system comprises concentration on-line checkingi part in correction portion and thickener, and correction portion corrects the data of concentration on-line checkingi part in thickener;
Slime water automatic dosing system (B), this automatic medicament feeding system comprises successively along the black water pan feeding detecting unit, policer operation unit, the medicament adding device that connect; In described thickener, the data signal output of concentration on-line checkingi part, black water pan feeding detecting unit is all connected with policer operation unit, and the instruction output end of policer operation unit is connected with medicament adding device;
Medicament decentralized system (C), this system comprises and is communicated with medicament adding device, bucket (C1) is efficiently prepared in the bilobed wheel heating receiving medicament, the rod impeller of depot preparation stirs buffer barrel (C10), two discharging openings are provided with bottom this agitator, one of them whereabouts screw pump (C2) and medicament buffer barrel (C3), electric gate valve (C4), constant current medicament flowmeter (C5), multiple jet nozzle (C6) forms constant dosing passage along connecting successively, another whereabouts diaphragm metering pump (C8) and variable medicament flowmeter (C9), jet nozzle (C6) forms variable dosing passage along connecting successively, the medicament of constant dosing passage and variable dosing passage all imports in black water feeding pipe, and jet nozzle (C6) towards all consistent with pan feeding direction in black water feeding pipe,
The control system be made up of PLC, in thickener, concentration online monitoring system (A), slime water automatic dosing system (B), medicament decentralized system (C) are all electrically connected with control system.
2. a kind of black water degree of depth clarification system according to claim 1, is characterized in that: described correction portion is set to and samples material in thickener and the intelligent concentration pot (A1) of detectable concentration fast; In described thickener, concentration on-line checkingi part is set to density tester in thickener (A2).
3. a kind of black water degree of depth clarification system according to claim 2, is characterized in that: described intelligent concentration pot (A1) comprises cubic type shell body (A11) and is arranged in shell as the tubular inner bag (A12) collecting black water, described shell body (A11) epimere is provided with draw-in groove (A111), stage casing is provided with handle fixture (A112) and internal bladder support (A113), draw-in groove (A111) and internal bladder support (A113) are all for fixing inner bag (A12), hypomere is installed with display (A114), sensor (A13) is also installed with bottom the seal cavity that shell body (A11) and inner bag (A12) surround, on sensor (A13), lower both sides are respectively equipped with, lower supporting plate (A131, A132), and on, lower supporting plate (A131, A132) the left and right sides is respectively equipped with, lower supporting plate baffle plate (A133, A134), described sensor (A13) is connected with display (A114), and lower sensor (A13) is converted to slime water flow by gathering the weight signal come and is presented on display (A114) in working order,
In described thickener, density tester (A2) is set to and multiple pressure transmitter (A21) is vertically uniformly distributed the testing arrangement be fixed in airtight container, and the voltage output signal of pressure transmitter (A21) adopts data collecting card collection.
4. a kind of black water degree of depth clarification system according to claim 3, is characterized in that: described pressure transmitter (A21) adopts diffusion silicon type pressure transmitter; Described data collecting card adopts MPS-010602 Multifunctional USB data acquisition card.
5. a kind of black water degree of depth clarification system according to claim 3, it is characterized in that: described black water pan feeding detecting unit is set to electromagnetic flowmeter (B1) and differential densimeter (B2), be respectively used to the mineral slurry flux and the pulp density that detect thickener feeding pipe, the touch-screen that described policer operation unit comprises PLC and is electrically connected with PLC, described medicament adding device comprises measuring pump.
6. a kind of black water degree of depth clarification system according to claim 5, it is characterized in that: described bilobed wheel heating is efficiently prepared bucket (C1) and comprised the Double-impeller stirrer (C11) being fixed on upper end, staving axis, the periphery of Double-impeller stirrer (C11) is installed with sleeve (C12), and the axis of sleeve (C12) overlaps with the axis of agitator; Described sleeve (C12) is provided with the first circulation port (C120), described Double-impeller stirrer is provided with the second circulation port (C130) on upper impeller (C13), first circulation port (C120), the second circulation port (C130) coordinate with lower impeller (C14), are formed in the turbulence flow flied of agitator inner loop; The inwall that bucket (C1) is efficiently prepared in bilobed wheel heating is also evenly provided with multiple resistance heating coil (C15); Efficiently prepare in bucket (C1) in bilobed wheel heating and be also provided with multiple viscosity detection probe (C16) be distributed in bucket, described viscosity detection probe (C16) is electrically connected with policer operation unit;
Described rod impeller stirs in buffer barrel (C10) and is provided with liquid level sensor I (C100), many rods impeller-agitator (C101), and liquid level sensor I (C100) is electrically connected with PLC.
7. a kind of black water degree of depth clarification system according to claim 6, it is characterized in that: in described medicament buffer barrel (C3), be designed with the liquid level sensor II (C30) be electrically connected with PLC, carried out the flow of regulating agent by the data of constant current medicament flowmeter (C5), the open degree that correspondingly controls electric gate valve (C4), and then control liquid level and be between setting district.
8. a kind of black water degree of depth clarification system according to claim 7, is characterized in that: multiple jet nozzle (C6) is towards on the identical axis being arranged on thickener feeding pipe; And the pipe-line mixer (C7) of abundant confection and black water is also installed on the pipeline of the downstream part of jet nozzle (C6), thickener feeding pipe.
9. a kind of black water degree of depth clarification system according to claim 6, it is characterized in that: described bilobed wheel generates heat to efficiently preparing in bucket (C1) and controls the temperature of liquid medicine at 40 to 50 DEG C, to reduce liquid medicine preparation time by resistance heating coil (C15).
10. a treatment process for black water degree of depth clarification system as claimed in claim 8, is characterized in that specifically comprising following operation:
Material bed change in thickener (D) is detected in real time by density tester (A2) in thickener in concentration online monitoring system (A) in S1, thickener, data acquisition, thickener (D) interior concentration or density isopleth and cloud atlas is drawn by software for calculation, display thickener (D) interior CONCENTRATION STATE, give the alarm when concentration transfinites, and then adjustment thickener chemical feeding quantity; Meanwhile, by after intelligent concentration pot (A1) sampling monitoring in this on-line monitoring process, periodic maintenance and Data correction are carried out to concentration online monitoring system in thickener (A);
After concentration in S2, thickener (D) is sent to slime water automatic dosing system (B) in real time, first black water pan feeding detecting unit detects mineral slurry flux and the pulp density of thickener (D) feeding pipe by electromagnetic flowmeter (B1) and differential densimeter (B2), data-signal transfers to PLC, flow is multiplied with concentration and calculates total dry coal slurry amount, and various data all show on the touchscreen;
By dispatcher according to display data setup control parameter on the touchscreen, then calculate additive amount of medicament by PLC according to the data-signal of setup parameter and collection;
S3, set additive amount of medicament after, the bilobed wheel heating that medicament adds medicament decentralized system C to is efficiently prepared in bucket C1, form circulation turbulence flow flied, at 40 to 50 DEG C, medicament rapid stirring dissolves, as multiple viscosity detection probe (C16) data all meet setting value, namely open pan feeding pump and solution is exported to rod impeller stirring buffer barrel (C10), liquid level sensor I (C100) detects material liquid level in bucket, until liquid level meets the requirements; Many rods impeller-agitator (C101) slowly runs, and maintains the state having prepared flocculant;
Bottom S4, medicament buffer barrel, the pump of two discharging openings is opened, one of them discharging opening solution removes constant dosing passage, open degree through electric gate valve (C4) carrys out the flow of regulating agent, another discharging opening solution removes variable dosing passage, the medicament of two dosing passages all through jet nozzle (C6) ejection, more finally flows into thickener (D) with the black water flowed into from thickener (D) feeding pipe after pipe-line mixer (C7) fully mixes.
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| CN201510616603.9A CN105233530B (en) | 2015-09-24 | 2015-09-24 | Coal slime water deep clarification system, and treatment method thereof |
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| CN201510616603.9A CN105233530B (en) | 2015-09-24 | 2015-09-24 | Coal slime water deep clarification system, and treatment method thereof |
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