CN107868654A - A kind of coal stream dust suppression automatic spraying method and system - Google Patents
A kind of coal stream dust suppression automatic spraying method and system Download PDFInfo
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- CN107868654A CN107868654A CN201711124177.2A CN201711124177A CN107868654A CN 107868654 A CN107868654 A CN 107868654A CN 201711124177 A CN201711124177 A CN 201711124177A CN 107868654 A CN107868654 A CN 107868654A
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09K—MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FOR ELSEWHERE
- C09K3/00—Materials not provided for elsewhere
- C09K3/22—Materials not provided for elsewhere for dust-laying or dust-absorbing
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
- B05B9/00—Spraying apparatus for discharge of liquids or other fluent material, without essentially mixing with gas or vapour
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08F—MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS
- C08F251/00—Macromolecular compounds obtained by polymerising monomers on to polysaccharides or derivatives thereof
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Abstract
The invention belongs to the technical field of coal stream Dust Improvement, more particularly to a kind of coal stream dust suppression automatic spraying method and system.The invention discloses a kind of coal stream dust suppression automatic spraying method, including：S101：Starch graft acrylic acid polymer, surfactant and water are mixed to get coal stream dust suppressant；S102：After the total dust concentration for determining coal stream, the sprinkling information of the coal stream dust suppressant is calculated according to the total dust concentration of the coal stream；S103：The coal stream dust suppressant is sprayed according to the sprinkling information.Present invention also offers a kind of coal stream dust suppression automatic sprinkler system.Coal stream dust suppression automatic spraying method and system provided by the invention can solve coal stream dust-suppression method in the prior art and the technological deficiency that dust suppression effect speed is short and wastes time and energy be present.
Description
Technical field
The invention belongs to the technical field of coal stream Dust Improvement, more particularly to a kind of coal stream dust suppression automatic spraying method and it is
System.
Background technology
Coal stream refers to coal conveying system, and coal easily produces airborne dust on belt in transportation, causes resource unrestrained
Take and environmental pollution.Dust dynamic coal flow is divided into advection airborne dust and falls to flow two kinds of airborne dust.Belt is in motion process, belt both sides
Air traction air-flow can be produced with belt movement, due to the viscosity of gas, coal stream and traction air-flow on belt are present
Velocity gradient, adsorb the coal dust on coal cinder surface and give birth to relative motion with coal miscarriage in the presence of frictional force, peeled off from coal cinder
Fly upward, make to produce a certain amount of dust above belt, here it is advection airborne dust.Falling to flow airborne dust is total to by induced draft and shear flow
Formed under same-action, coal particle is in drop event, and movement velocity is increased with the rule of freely falling body, and air is rushed by particle
Hit the effect of power and frictional force, produce the linear motion consistent with particle direction, drop coal stream side and air pressure below
It is low, dragged the air of surrounding and draw and produce induced draft, induced draft moves with it the grit in coal flow table face, and generation is raised
Dirt；When shear flow refers to that coal is wandered to rigid plane, loose coal stream by rigid plane squeezing action, by coal cinder gap
Air extrude suddenly, form upward shear flow, drive tiny dust to escape, cause dust from flying.Due to coal
Handling, the time reprinted and transported on belt are relatively short, therefore also require that dust suppressant can quickly play dust suppression effect
Fruit.At present, coal handling system dust-producing amount is big, and space occlusion, coal stream airborne dust not only causes coal measuring loss, meanwhile, cause serious dirt
Dye, the especially coal that comes to some easy dusts, the dust concentration of coal handling system are far above the working region powder of national Specification
Dust concentration is not more than 4mgm-3Requirement, it is necessary to take certain dust suppression measure.The mainly artificial timing of existing coal stream dust suppression
Spray water, which carries out dust suppression this method, certain hysteresis quality, and wastes time and energy.
In summary, there is the technological deficiency that anti-dust effect is short and wastes time and energy in traditional coal stream dust-suppression method.It is based on
This, it is this area to develop a kind of automatic sprinkler system for coal stream dust suppression that can be applied to dynamic and intelligent, automate
Technical staff's technical problem urgently to be resolved hurrily.
The content of the invention
In view of this, the invention provides a kind of coal stream dust suppression automatic spraying method and system, can effectively solve traditional
The technological deficiency that dust suppression effect speed is short and wastes time and energy be present in coal stream dust-suppression method.
Present invention also offers a kind of coal stream dust suppression automatic spraying method and system, including：
S101：Starch graft acrylic acid polymer, surfactant and water are mixed to get coal stream dust suppressant；
S102：After the total dust concentration for determining coal stream, the coal stream is calculated according to the total dust concentration of the coal stream
The sprinkling information of dust suppressant；
S103：The coal stream dust suppressant is sprayed according to the sprinkling information.
Preferably, in parts by weight, the coal stream dust suppressant includes：
Starch graft acrylic acid polymer 1.0-3.0 parts；
Surfactant 0.02-0.06 parts；
100 parts of water.
Preferably, the preparation method of the starch graft acrylic acid polymer is as follows：
S201：Starch is gelatinized, obtains gelatinized starch；
S202：The gelatinized starch, ammonium persulfate and acrylic acid solution hybrid reaction are obtained into the starch-grafted propylene
Acid polymer.
Preferably, the acrylic acid solution is specially the acrylic acid solution that degree of neutralization is 70%-75%.
More preferably, the acrylic acid solution is specially the acrylic acid solution that degree of neutralization is 70%.
Preferably, the surfactant is lauryl sodium sulfate.
The invention also discloses a kind of coal stream dust suppression automatic sprinkler system, including：Dispensation apparatus, control device, sprinkling dress
Put and dust concentration monitoring device；
The dispensation apparatus is used to configure starch graft acrylic acid polymer, surfactant and water to obtain coal stream dust suppression
Agent；
The control device is connected with the dispensation apparatus and the flusher respectively；
The dust concentration monitoring device is connected with the control device so that it is dense that the control device obtains the dust
Spend the total dust concentration of the coal stream of monitoring device；
The dispensation apparatus connects with the flusher pipeline so that the control device is according to total powder of the coal stream
After the sprinkling information of the coal stream dust suppressant is calculated in dust concentration, the dispensation apparatus is controlled to prepare the coal stream dust suppressant,
And the flusher is controlled to spray the coal stream dust suppressant.
Preferably, the dispensation apparatus prepares case including coal stream dust suppressant, starch graft acrylic acid polymer configures case,
Surfactant storage bin and water tank；
Starch graft acrylic acid polymer configuration case, the surfactant storage bin and the water tank with it is described
Coal stream dust suppressant prepares the connection of case pipeline；
The starch graft acrylic acid polymer configuration case is used to configure starch graft acrylic acid polymer.
Preferably, the starch graft acrylic acid polymer configuration case, the surfactant storage bin, the water tank
The inside for preparing case with the coal stream dust suppressant is respectively mounted volume measurement device；
Starch graft acrylic acid polymer configuration case, the surfactant storage bin, the water tank and the coal
The volume measurement device that stream dust suppressant prepares case is connected with control device so that the control device obtains the cubing
The volume information of device, and after the sprinkling information of the coal stream dust suppressant is calculated according to the total dust concentration of the coal stream,
The dispensation apparatus is controlled to prepare the coal stream dust suppressant.
Preferably, starch graft acrylic acid polymer configuration case, the surfactant storage bin and the coal
Stream dust suppressant prepares the inside installation agitator of case.
Preferably, the dust concentration monitoring device is specially infrared dust determination instrument.
Present invention discover that, falling stream in gravity due to coal flow velocity degree (speed of service of coal conveyer belt is typically in 4m/s) quickly
In the presence of acceleration, faster, haulage time of the coal on belt is extremely short for coal flow velocity degree, meanwhile, gas is drawn in the case of advection
Stream makes the grit in coal flow table face produce airborne dust, and in the case of stream is fallen, powerful induced draft, shear flow not only make top layer
Grit produces airborne dust, and the grit below top layer can also be made to produce airborne dust, the airborne dust feature based on coal stream, existing Dust depression of coal stock pile
Agent mainly plays dust suppression by consolidation and acted on, but existing dust suppression is mainly artificial timing spray water progress dust suppression, existing
Some dust-suppression methods are difficult to meet current demand.Therefore, because coal stream airborne dust is by traction air-flow, induced draft, shear flow
Cause etc. factor, and coal flow velocity degree is fast, it is necessary to dust suppressant has good coalescence and wetability, dust granules is quickly moistened
It is wet, and coalescence is together, increases the particle diameter and weight of dust granules, reaches the effect of dust suppression, meanwhile, for falling to flow dust suppression
Say, powerful induced draft, shear flow make the fine particle inside loose coal stream escape to form airborne dust, also need dust suppressant to have
Good permeability, enable inside dust suppressant rapid osmotic coal stream.
Based on this, the invention discloses a kind of coal stream dust suppression automatic spraying method, including：S101：By starch-grafted propylene
Acid polymer, surfactant and water are mixed to get coal stream dust suppressant；S102：After the total dust concentration for determining coal stream, according to institute
The sprinkling information of the coal stream dust suppressant is calculated in the total dust concentration for stating coal stream；S103：By the coal stream dust suppressant according to
The sprinkling information is sprayed.Wherein, the starch graft acrylic acid polymer of coal stream dust suppressant is a kind of good coalescence thing
Matter, mainly play coalescence, increase the weight of its grit by tiny grit coalescence together, reach anti-dust effect, dust suppressant
Concentration is higher, and the viscosity increase of dust suppressant strengthens coalescence, but the increase of the viscosity of dust suppressant can also decline permeability, this
Invention considers its coalescence and infiltrative balance, and the viscosity for determining dust suppressant is 10MPa.s, so that it is determined that starch connects
The usage amount of branch acrylate copolymer, in addition, surfactant can reduce the surface tension of Coal Dust and water, makes dust suppressant
Time of penetration in coal seam shortens, and water is 40s in the coal seam time of penetration of 1cm thickness, and after with the addition of surfactant, ooze
The saturating time shorten to 25s, so surfactant has stronger wetability and permeability, coal stream dust suppressant can be made quickly to press down
Dirt.According to this principle, coal stream dust suppressant of the present invention is selected starch graft acrylic acid polymer and dodecyl sulphate
Sodium is used cooperatively, and can be significantly reduced the surface tension of water, be improved wetability and permeability of the dust suppressant to coal sample, with this
In a short time to the raw anti-dust effect of coal miscarriage, significantly suppress dynamic coal flow airborne dust.Filled by being tested in dynamic dust behavior
Put and scene spray dust suppression and test showing by coal stream dust suppressant sprinkling system, coal stream dust suppressant makes around coal stream
The dust of the particle diameters such as PM1.0, PM2.5, PM10 averagely declines 98%, and spray water makes different-grain diameter dust averagely decline 72%,
Anti-dust effect significantly improves.So the coal stream dust suppressant that the present invention develops has good coalescence, wetability and permeability,
These performances are better than pure water, and anti-dust effect is significantly stronger than pure water.Based on this, present invention utilizes the coal stream dust suppressant to coordinate intelligence
Control device, flusher and the dust concentration monitoring device of energy have developed coal stream dust suppression automatic spraying method and its system.
Compared with existing dust-suppression method and device, coal stream dust suppression automatic spraying method of the invention, using the control device of intelligence, energy
Enough realize automatically configures coal stream dust suppressant, automatic spraying coal stream dust suppressant, additionally it is possible to is controlled and sprayed according to the total dust concentration of coal stream
The total amount of coal stream dust suppressant is spilt, can not only control the cost of coal stream dust suppressant, and the speed for configuring coal stream dust suppressant is fast, configuration amount
Greatly, the needs of live high-volume coal stream Dust Improvement are disclosure satisfy that, while significantly mitigate the labor intensity of operating personnel.
Brief description of the drawings
In order to illustrate more clearly about the embodiment of the present invention or technical scheme of the prior art, below will be to embodiment or existing
There is the required accompanying drawing used in technology description to be briefly described.
Fig. 1 shows that the invention provides a kind of flow chart of coal stream dust suppression automatic spraying method；
Fig. 2 shows that the invention provides a kind of structure chart of coal stream dust suppression automatic sprinkler system；
Wherein, reference, coal stream belt 1, starch graft acrylic acid polymer configuration case 2, coal stream dust suppressant prepare case
3rd, (pipeline and water tank connect for surfactant storage bin 4 (surfactant is lauryl sodium sulfate), control device 5, pipeline 6
Connect), the shower nozzle 7 of flusher, starch graft acrylic acid polymer configuration case conveying stop valve 8, starch graft acrylic acid polymerization
Thing configuration case delivery pump 9, charge door 10, coal stream dust suppressant prepare case water inlet 11, surfactant storage bin intake pump 12, table
Face activating agent storage bin water inlet stop valve 13, coal stream dust suppressant prepare case conveying stop valve 14, coal stream dust suppressant prepares case conveying
Pump 15, coal stream dust suppressant prepare case mixer 16, dust concentration monitoring device 17, flusher flowmeter 18, coal stream dust suppressant
Prepare case water inlet stop valve 19, coal stream dust suppressant prepares case intake pump 20, the configuration case water inlet of starch graft acrylic acid polymer is cut
Only valve 21, starch graft acrylic acid polymer configure case intake pump 22, starch graft acrylic acid polymer configures box mixer 23,
Surfactant storage bin delivery pump 24, surfactant storage bin conveying stop valve 25, surfactant storage box mixer
26。
Embodiment
The invention provides a kind of coal stream dust suppression automatic spraying method and system, for solving coal stream dust suppression in the prior art
The technological deficiency that dust suppression speed is short and wastes time and energy be present in method.
The technical scheme in the embodiment of the present invention will be clearly and completely described below, it is clear that described implementation
Example only part of the embodiment of the present invention, rather than whole embodiments.It is common based on the embodiment in the present invention, this area
The every other embodiment that technical staff is obtained under the premise of creative work is not made, belong to the model that the present invention protects
Enclose.
Wherein, the raw material used in following examples is commercially available or made by oneself.
Embodiment 1
Referring to Fig. 1, Fig. 1 is a kind of flow chart of coal stream dust suppression automatic spraying method.The embodiment of the present invention 1 discloses one
Kind coal stream dust suppression automatic spraying method, including：S101：Starch graft acrylic acid polymer, surfactant and water are mixed
To coal stream dust suppressant；S102：After the total dust concentration for determining coal stream, coal stream dust suppression is calculated according to the total dust concentration of coal stream
The sprinkling information of agent；S103：Coal stream dust suppressant is sprayed according to sprinkling information.
Embodiment 2
Referring to Fig. 1, Fig. 1 is a kind of flow chart of coal stream dust suppression automatic spraying method.The embodiment of the present invention 1 discloses one
Kind coal stream dust suppression automatic spraying method, including：S101：Starch graft acrylic acid polymer, surfactant and water are mixed
To coal stream dust suppressant；S102：After the total dust concentration for determining coal stream, coal stream dust suppression is calculated according to the total dust concentration of coal stream
The sprinkling information of agent；S103：Coal stream dust suppressant is sprayed according to sprinkling information.
Further, in parts by weight, coal stream dust suppressant includes：
Starch graft acrylic acid polymer 1.0-3.0 parts；
Surfactant 0.02-0.06 parts；
100 parts of water.
Further, the preparation method of starch graft acrylic acid polymer is as follows：
S201：Starch is gelatinized, obtains gelatinized starch；
S202：Gelatinized starch, ammonium persulfate and acrylic acid solution hybrid reaction are obtained into the starch graft acrylic acid to gather
Compound.
Further, the preparation method of starch graft acrylic acid polymer is specially：
4g starch and distilled water are added in the 250mL flasks equipped with agitator, condenser pipe and thermometer, 80 DEG C are stirred
After mixing constant temperature gelatinization 30min, 70 DEG C are subsequently cooled to, 0.12g ammonium persulfates is added, acrylic acid solution 20ml is added dropwise after 10min
(acrylic acid solution is the acrylic acid solution that degree of neutralization is 70%) reacts 3h, obtains starch graft acrylic acid by polymerisation and gathers
Compound.Wherein, it is 7.8g that the acrylic acid solution that 20ml degree of neutralization is 70%, which needs sodium hydroxide quality,；Wherein, preparing raw material,
Starch, ammonium persulfate, the weight of acrylic acid and water are frequently specifically, starch：Ammonium persulfate：Acrylic acid：Sodium hydroxide：Water is 1：
0.03：5：1.95：50.
Further, acrylic acid solution is specially the acrylic acid solution that degree of neutralization is 70%.
Further, surfactant is lauryl sodium sulfate.
Further, starch is soluble starch, can be gelatinized in the hot water.
Further, acrylic acid purity is pure to analyze, and crosslinking agent, density 1.04-1.05g/ are used as in polymerisation
mL。
Further, NaOH is to analyze pure, colourless transparent crystal, density 2.13g/cm3。
Further, ammonium persulfate purity is pure to analyze, and initiator is used as in polymerisation, Density Density is
1.982g/cm3。
Further, lauryl sodium sulfate white powdery solid, density 1.09g/cm3, pH 7.5-9.5.
Further, control device uses PLC programming Controls.
Further, casing is made of Stainless Steel material, and the interior installation liquid level sensor of casing simultaneously will by communication protocol
Liquid level signal channel control unit, and shown from control device.
Further, dust concentration monitoring device 17 is dense using total dust around infrared dust determination instrument measure coal stream
Degree, and the signal of the total dust concentration of coal stream is sent to by control device by communication protocol and shown in control device.
Further, the shower nozzle 7 of flusher uses atomizer, can energy-conserving and environment-protective；The sprinkling of the shower nozzle 7 of flusher
Flow is monitored by flusher flowmeter 18, and the flow signal of sprinkling is sent into control device by communications protocol and controlled
Shown in device processed.
Further, the solvent of coal stream dust suppressant is water, and water used is specially demineralized water.
Embodiment 3
Referring to Fig. 2, Fig. 2 is the structure chart of coal stream dust suppression automatic sprinkler system, the coal stream dust suppression automatic spraying of embodiment 3
System, including：Dispensation apparatus, control device, flusher and dust concentration monitoring device；Dispensation apparatus is used for will be starch-grafted
Acrylate copolymer, surfactant and water configure to obtain coal stream dust suppressant；Control device 5 fills with dispensation apparatus and sprinkling respectively
Put connection；Dust concentration monitoring device 17 is connected with control device 5 so that control device 5 obtains dust concentration monitoring device 17
Coal stream total dust concentration；Dispensation apparatus connects with flusher pipeline so that control device 5 is dense according to total dust of coal stream
After the sprinkling information of coal stream dust suppressant is calculated in degree, control dispensation apparatus prepares coal stream dust suppressant, and controls flusher to spray
Spill coal stream dust suppressant.
Embodiment 4
Referring to Fig. 2, Fig. 2 is the structure chart of coal stream dust suppression automatic sprinkler system, the coal stream dust suppression automatic spraying of embodiment 3
System, including：Dispensation apparatus, control device, flusher and dust concentration monitoring device；Dispensation apparatus is used for will be starch-grafted
Acrylate copolymer, surfactant and water configure to obtain coal stream dust suppressant；Control device 5 fills with dispensation apparatus and sprinkling respectively
Put connection；Dust concentration monitoring device 17 is connected with control device 5 so that control device 5 obtains dust concentration monitoring device 17
Coal stream total dust concentration；Dispensation apparatus connects with flusher pipeline so that control device 5 is dense according to total dust of coal stream
After the sprinkling information of coal stream dust suppressant is calculated in degree, control dispensation apparatus prepares coal stream dust suppressant, and controls flusher to spray
Spill coal stream dust suppressant.
Further, dispensation apparatus prepares case 3, starch graft acrylic acid polymer configuration case 2, table including coal stream dust suppressant
Face activating agent storage bin 4 and water tank；Starch graft acrylic acid polymer configuration case 2, surfactant storage bin 4 and water tank with
Coal stream dust suppressant prepares the connection of the pipeline of case 3；Starch graft acrylic acid polymer configuration case 2 gathers for configuring starch graft acrylic acid
Compound.
Further, starch graft acrylic acid polymer configuration case 2, surfactant storage bin 4, water tank and coal stream dust suppression
The inside that agent prepares case 3 is respectively mounted volume measurement device；Starch graft acrylic acid polymer configuration case 2, surfactant storage
The volume measurement device that case 4, water tank and coal stream dust suppressant prepare case 3 is connected with control device 5 so that control device 5 obtains
The volume information of volume measurement device, and after the sprinkling information of coal stream dust suppressant is calculated according to the total dust concentration of coal stream,
Control dispensation apparatus prepares coal stream dust suppressant.
Further, starch graft acrylic acid polymer configuration case 2, surfactant storage bin 4 and coal stream dust suppressant system
The inside installation agitator of standby case 3 so that starch graft acrylic acid polymer, surfactant and coal stream dust suppressant can stir
It is even.
Further, dust concentration monitoring device is specially infrared dust determination instrument.
Further, the shower nozzle 7 of flusher is specially atomizer, can reach good anti-dust effect, and and can is reduced
The usage amount of coal stream dust suppressant, coal stream dust suppression automatic sprinkler system of the invention can also be according to the height of the total dust concentration of coal stream
It is low, the fountain height of coal stream dust suppressant is controlled, good anti-dust effect can be reached, can also reduce the usage amount of coal stream dust suppressant,
Be advantageous to the control cost of dust suppression.
Further, coal stream dust suppression automatic sprinkler system is additionally provided with alarm warning lamp, and alarm warning lamp is respectively to make up a prescription
Warning lamp and warning lamp, the warning lamp that makes up a prescription prepare case 3, the configuration of starch graft acrylic acid polymer installed in coal stream dust suppressant
The inside of case 2 and surfactant storage bin 4, when coal stream dust suppressant prepares case 3, starch graft acrylic acid polymer configuration case 2
When reaching minimum spacing with the liquid level of the liquid of surfactant storage bin 4, the warning lamp that made up a prescription corresponding in dispensation apparatus lights,
Prompting charging；Warning lamp is arranged on electronic group of dispensation apparatus, control device, flusher and dust concentration monitoring device
In part, when any electric assembly of dispensation apparatus, control device, flusher and dust concentration monitoring device breaks down,
Warning lamp lights.
The spray water that the coal stream dust suppressant dosage of embodiment 4 is relatively conventional declines to a great extent, and therefore, reduces moisture to ature of coal
Influence, for coal as received, spray water reduces the net calorific value as received basis of coal, influences to valuate, easily makes
Into trade dispute, the application of coal stream dust suppressant reduces trade dispute.
Embodiment 5
Referring to Fig. 2, Fig. 2 is the structure chart of coal stream dust suppression automatic sprinkler system, the coal stream dust suppression automatic spraying of embodiment 5
System includes：Coal stream belt 1, starch graft acrylic acid polymer configuration case 2, coal stream dust suppressant prepare case 3, surfactant storage
Deposit case 4 (surfactant is lauryl sodium sulfate), control device 5, pipeline 6 (pipeline is connected with water tank), flusher spray
First 7, starch graft acrylic acid polymer configuration case conveys stop valve 8, starch graft acrylic acid polymer configures case delivery pump 9,
Charge door 10, coal stream dust suppressant prepare case water inlet 11, surfactant storage bin intake pump 12, surfactant storage bin and entered
Water stop valve 13, coal stream dust suppressant prepare case conveying stop valve 14, coal stream dust suppressant prepares case delivery pump 15, coal stream dust suppressant system
Standby case mixer 16, dust concentration monitoring device 17, flusher flowmeter 18, coal stream dust suppressant prepare case water inlet stop valve
19th, coal stream dust suppressant prepares case intake pump 20, starch graft acrylic acid polymer configuration case water inlet stop valve 21, starch-grafted third
Olefin(e) acid polymer configuration case intake pump 22, starch graft acrylic acid polymer configuration box mixer 23, surfactant storage bin
Delivery pump 24, surfactant storage bin conveying stop valve 25, surfactant storage box mixer 26.Annexation such as Fig. 2
Shown, starch graft acrylic acid polymer configures case 2 and configures case conveying stop valve 8 by starch graft acrylic acid polymer and form sediment
Powder grafted propylene acid polymer configuration case delivery pump 9 prepares the pipeline of case 3 with coal stream dust suppressant and is connected；Starch graft acrylic acid polymerize
Thing configuration case 2 is connected by pipeline 6 with water tank；Coal stream dust suppressant prepares case 3 and is connected by pipeline 6 with water tank；Coal stream dust suppressant
Prepare case 3 and stop valve 25 and surfactant are conveyed by surfactant storage bin delivery pump 24 and surfactant storage bin
Storage bin 4 connects；Coal stream dust suppressant prepares case 3 and prepares case conveying stop valve 14 and the preparation of coal stream dust suppressant by coal stream dust suppressant
Case delivery pump 15 is connected with the pipeline of shower nozzle 7 of flusher；The shower nozzle 7 of dust concentration monitoring device 17 and flusher is arranged on
On coal stream belt 1；Surfactant storage bin 4 is connected with by pipeline 6 with water tank, control device 5 with dispensation apparatus, sprinkling
Device connects with dust concentration monitoring device.
The present embodiment 5 carrys out the dust suppression application examples of coal coal stream transportation to 4.5 ten thousand tons, and coal conveying belt amount is 1500t/h, is unloaded
The coal time is about 30h.Coal stream dust suppressant is prepared before unloading coal, in order to prevent that the dosage of coal stream dust suppressant is insufficient, coal stream dust suppressant
Amount of preparation should be calculated with maximum sprinkling amount, maximum sprinkling flow 50mL/s, dosing 5400L, as shown in Fig. 2 being first
Coal stream dust suppressant is configured, the charge door 10 toward starch graft acrylic acid polymer configuration case 2 adds 108kg starch graft acrylic acids
Polymer, the charge door 10 of surfactant storage bin 4 add 1.62kg surfactant (lauryl sodium sulfate), control
The program of the startup configuration coal stream dust suppressant of device 5, surfactant storage bin intake pump 12 starts, automatic toward surfactant
After storage bin 4 adds 2700L demineralized water, surfactant storage bin water inlet stop valve 13 starts；So that starch-grafted propylene
Acid polymer configuration case intake pump 22 starts, after adding 2700L demineralized water toward starch graft acrylic acid polymer configuration case 2,
So that starch graft acrylic acid polymer configuration case water inlet stop valve 21 starts, start starch graft acrylic acid polymer configuration case
Agitator 23 and surfactant storage box mixer 26, it is 2000r/min, mixing time 30min to control speed；Then,
So that starch graft acrylic acid polymer configuration case delivery pump 9 and surfactant storage bin delivery pump 24 start, it is starch-grafted
Acrylate copolymer and surfactant are transported to coal stream dust suppressant and prepare case 3, when coal stream dust suppressant prepares the liquid volume of case 3
After reaching 5400L so that starch graft acrylic acid polymer configuration case conveying stop valve 8 and the conveying of surfactant storage bin are cut
Only valve 25 is opened, and it is 2000r/min to start coal stream dust suppressant to prepare case mixer 16 to control speed, and starch graft acrylic acid is gathered
Compound and surfactant are well mixed, and coal stream dust suppressant is prepared.Control device 5 terminates the configuration of coal stream dust suppressant.When
When starting to unload coal, control device 5 controls dust concentration monitoring device 17 to start working, and obtains the coal of dust concentration monitoring device 17
The total dust concentration of stream, and by the data processor of the signal conveying control device 5 of the total dust concentration of coal stream, control device
The sprinkling information of coal stream dust suppressant is calculated in 5 data processor, and control device 5 controls coal according to the total dust concentration of coal stream
The fountain height of dust suppressant is flowed, control device 5 controls the coal stream dust suppressant of the shower nozzle 7 of flusher by flusher flowmeter 18
Sprinkling flow velocity, work as dust concentration>1mg m-3, the sprinkling flow of coal stream dust suppressant is 50ml/s, works as dust concentration<1mg m-3,
The sprinkling flow of coal stream dust suppressant is 25ml/s；Then coal stream dust suppressant prepares case delivery pump 15 and opened, the shower nozzle 7 of flusher
The top of coal stream belt 1 is located at, is uniformly sprayed at from up to down on coal stream belt 1, is uniformly sprayed by the shower nozzle 7 of flusher
On coal stream belt 1, after end of unloading coal, control device 5 terminates the sprinkling work of the shower nozzle 7 of flusher.
Embodiment 6
Coal stream dust suppressant disclosed in the present embodiment 6, include the raw material of following parts by weight：
2.0 parts of starch graft acrylic acid polymer
0.03 part of lauryl sodium sulfate
100 parts of water.
The preparation method of the dust suppressant of above-described embodiment 6, comprises the following steps：
100 parts of 2.0 parts of starch graft acrylic acid polymer, 0.03 part of lauryl sodium sulfate and water are taken in parts by weight,
Starch graft acrylic acid polymer, lauryl sodium sulfate and water is added in the container equipped with mechanical agitator to be sufficiently stirred,
The dust suppressant finished product is obtained after being completely dissolved.
Embodiment 7
Coal stream dust suppressant disclosed in the present embodiment 7, include the raw material of following parts by weight：
1.0 parts of starch graft acrylic acid polymer
0.02 part of lauryl sodium sulfate
100 parts of water.
The preparation method of the dust suppressant of above-described embodiment 7, comprises the following steps：
100 parts of 1.0 parts of starch graft acrylic acid polymer, 0.02 part of lauryl sodium sulfate and water are taken in parts by weight,
Starch graft acrylic acid polymer, lauryl sodium sulfate and water is added in the container equipped with mechanical agitator to be sufficiently stirred,
The dust suppressant finished product is obtained after being completely dissolved.
Further, the coal stream dust suppressant of the present embodiment 7 have nontoxic, degradable, easy engineer applied, cost low and
The advantages that environmentally safe.
Embodiment 8
Coal stream dust suppressant disclosed in the present embodiment 8, include the raw material of following parts by weight：
3.0 parts of starch graft acrylic acid polymer
0.05 part of lauryl sodium sulfate
100 parts of water.
The preparation method of the dust suppressant of above-described embodiment 8, comprises the following steps：
100 parts of 3.0 parts of starch graft acrylic acid polymer, 0.05 part of lauryl sodium sulfate and water are taken in parts by weight,
Starch graft acrylic acid polymer, lauryl sodium sulfate and water is added in the container equipped with mechanical agitator to be sufficiently stirred,
The dust suppressant finished product is obtained after being completely dissolved.
Comparative example
This comparative example is a kind of dust suppressant, and with embodiment 6, difference is for its raw material composition and preparation method：By described ten
Sodium dialkyl sulfate replaces with neopelex.It is that embodiment 6 and comparative example and moisture are passed through into coal stream dust suppression below
Automatic sprinkler system implements sprinkling dust suppression to operation coal stream, to contrast anti-dust effect, as a result as shown in table 1.
The performance test results table of the coal stream dust suppressant of the embodiment 6 of table 1 and comparative example
The coal stream dust suppressant of embodiment 6, the dust suppressant of comparative example and water are pressed down by coal stream dust suppressant sprinkling system
Dirt effect experiment, the coal of experiment is 4.5 ten thousand tons, and coal conveying belt amount is 1500t/h, and the time of unloading coal is 30h, belt speed 4m/
s.Coal stream using coal stream dust suppression automatic sprinkler system (the coal stream dust suppression automatic sprinkler system of embodiment 3) configuration embodiment 6 presses down
Dirt agent, dust concentration monitoring device detect coal stream total dust concentration, respectively measurement spray water, embodiment 6 dust suppressant and
Different-grain diameter (PM1.0, the PM2.5 and PM10) mean dust concentration of coal stream after the dust suppressant of comparative example and average total dirt are dense
Degree, the results are shown in Table 2.
The anti-dust effect table of the coal stream dust suppressant of the embodiment 6 of table 2 and comparative example
| Project | Do not spray | Water | Comparative example | Embodiment 4 |
| Total dust concentration/μ g/m3 | 4410 | 1838 | 580 | 460 |
| PM1.0/μg/m3 | 1806 | 832 | 310 | 250 |
| PM2.5/μg/m3 | 1596 | 626 | 204 | 165 |
| PM10/μg/m3 | 1001 | 320 | 52 | 30 |
From table 2 it can be seen that caused various particle diameter dust concentrations and total dirt are dense after the coal stream dust suppressant of sprinkling embodiment 6
The anti-dust effect for spending minimum, of the invention coal stream dust suppression automatic spraying method and system is notable.
Described above is only the preferred embodiment of the present invention, it is noted that for the ordinary skill people of the art
For member, under the premise without departing from the principles of the invention, some improvements and modifications can also be made, these improvements and modifications also should
It is considered as protection scope of the present invention.
Claims (10)
- A kind of 1. coal stream dust suppression automatic spraying method, it is characterised in that including：S101：Starch graft acrylic acid polymer, surfactant and water are mixed to get coal stream dust suppressant；S102：After the total dust concentration for determining coal stream, the coal stream dust suppression is calculated according to the total dust concentration of the coal stream The sprinkling information of agent；S103：The coal stream dust suppressant is sprayed according to the sprinkling information.
- 2. coal stream dust suppression automatic spraying method according to claim 1, it is characterised in that in parts by weight, the coal Stream dust suppressant includes：Starch graft acrylic acid polymer 1.0-3.0 parts；Surfactant 0.02-0.06 parts；100 parts of water.
- 3. coal stream dust suppression automatic spraying method according to claim 2, it is characterised in that the starch graft acrylic acid gathers The preparation method of compound is as follows：S201：Starch is gelatinized, obtains gelatinized starch；S202：The gelatinized starch, ammonium persulfate and acrylic acid solution hybrid reaction are obtained into the starch graft acrylic acid to gather Compound.
- 4. coal stream dust suppression automatic spraying method according to claim 2, it is characterised in that the acrylic acid solution is specially Degree of neutralization is 70%-75% acrylic acid solution.
- 5. coal stream dust suppression automatic spraying method according to claim 2, it is characterised in that the surfactant is 12 Sodium alkyl sulfate.
- A kind of 6. coal stream dust suppression automatic sprinkler system, it is characterised in that including：Dispensation apparatus, control device, flusher and powder Dust concentration monitoring device；The dispensation apparatus is used to configure starch graft acrylic acid polymer, surfactant and water to obtain coal stream dust suppressant；The control device is connected with the dispensation apparatus and the flusher respectively；The dust concentration monitoring device is connected with the control device so that the control device obtains the dust concentration prison Survey the total dust concentration of the coal stream of device；The dispensation apparatus connects with the flusher pipeline so that the control device is dense according to total dust of the coal stream After the sprinkling information of the coal stream dust suppressant is calculated in degree, the dispensation apparatus is controlled to prepare the coal stream dust suppressant, and control Make the flusher and spray the coal stream dust suppressant.
- 7. coal stream dust suppression automatic sprinkler system according to claim 6, it is characterised in that the dispensation apparatus includes coal stream Dust suppressant prepares case, starch graft acrylic acid polymer configuration case, surfactant storage bin and water tank；Starch graft acrylic acid polymer configuration case, the surfactant storage bin and the water tank with the coal stream Dust suppressant prepares the connection of case pipeline；The starch graft acrylic acid polymer configuration case is used to configure starch graft acrylic acid polymer.
- 8. coal stream dust suppression automatic sprinkler system according to claim 7, it is characterised in that the starch graft acrylic acid gathers The inside that compound configuration case, the surfactant storage bin, the water tank and the coal stream dust suppressant prepare case is respectively mounted body Product measurement apparatus；Starch graft acrylic acid polymer configuration case, the surfactant storage bin, the water tank and the coal stream suppression The volume measurement device that dirt agent prepares case is connected with control device so that the control device obtains the volume measurement device Volume information, and after the sprinkling information of the coal stream dust suppressant is calculated according to the total dust concentration of the coal stream, control The dispensation apparatus prepares the coal stream dust suppressant.
- 9. coal stream dust suppression automatic sprinkler system according to claim 6, it is characterised in that the starch graft acrylic acid gathers Compound configuration case, the surfactant storage bin and the coal stream dust suppressant prepare the inside installation agitator of case.
- 10. coal stream dust suppression automatic sprinkler system according to claim 6, it is characterised in that the dust concentration monitoring dress Put specially infrared dust determination instrument.
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN112903538A (en) * | 2021-02-09 | 2021-06-04 | 太原理工大学 | Full-automatic coal dust wettability experiment testing arrangement |
| CN113505340A (en) * | 2021-09-06 | 2021-10-15 | 烟台双塔食品股份有限公司 | Accurate control device and control method for preventing pea protein powder from flying |
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| CN105107312A (en) * | 2015-06-17 | 2015-12-02 | 科霖尔环保科技（上海）有限公司 | Micro-fog dust-suppressing system for construction site and dust-suppressing method thereof |
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| CN105107312A (en) * | 2015-06-17 | 2015-12-02 | 科霖尔环保科技（上海）有限公司 | Micro-fog dust-suppressing system for construction site and dust-suppressing method thereof |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112903538A (en) * | 2021-02-09 | 2021-06-04 | 太原理工大学 | Full-automatic coal dust wettability experiment testing arrangement |
| CN113505340A (en) * | 2021-09-06 | 2021-10-15 | 烟台双塔食品股份有限公司 | Accurate control device and control method for preventing pea protein powder from flying |
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