CN209646764U - A kind of powder charge dispersion injection apparatus - Google Patents
A kind of powder charge dispersion injection apparatus Download PDFInfo
- Publication number
- CN209646764U CN209646764U CN201821951397.2U CN201821951397U CN209646764U CN 209646764 U CN209646764 U CN 209646764U CN 201821951397 U CN201821951397 U CN 201821951397U CN 209646764 U CN209646764 U CN 209646764U
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- China
- Prior art keywords
- powder
- injection apparatus
- charge
- charged needle
- disperses
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
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- 239000000843 powder Substances 0.000 title claims abstract description 93
- 238000002347 injection Methods 0.000 title claims abstract description 33
- 239000007924 injection Substances 0.000 title claims abstract description 33
- 239000006185 dispersion Substances 0.000 title abstract description 21
- 238000010438 heat treatment Methods 0.000 claims abstract description 21
- 238000009413 insulation Methods 0.000 claims abstract description 21
- 239000007921 spray Substances 0.000 claims description 5
- 239000000203 mixture Substances 0.000 claims description 2
- 230000005611 electricity Effects 0.000 claims 1
- 239000000463 material Substances 0.000 claims 1
- 239000002184 metal Substances 0.000 claims 1
- 230000000694 effects Effects 0.000 abstract description 11
- 239000008187 granular material Substances 0.000 abstract description 11
- 239000007788 liquid Substances 0.000 abstract description 6
- 238000009833 condensation Methods 0.000 abstract description 3
- 230000005494 condensation Effects 0.000 abstract description 3
- 238000000034 method Methods 0.000 description 12
- 239000000243 solution Substances 0.000 description 12
- VTYYLEPIZMXCLO-UHFFFAOYSA-L Calcium carbonate Chemical compound [Ca+2].[O-]C([O-])=O VTYYLEPIZMXCLO-UHFFFAOYSA-L 0.000 description 8
- 239000002245 particle Substances 0.000 description 8
- 230000000052 comparative effect Effects 0.000 description 7
- OYPRJOBELJOOCE-UHFFFAOYSA-N Calcium Chemical compound [Ca] OYPRJOBELJOOCE-UHFFFAOYSA-N 0.000 description 6
- 229910052791 calcium Inorganic materials 0.000 description 6
- 239000011575 calcium Substances 0.000 description 6
- 229910000019 calcium carbonate Inorganic materials 0.000 description 4
- 238000010586 diagram Methods 0.000 description 4
- 238000006477 desulfuration reaction Methods 0.000 description 3
- 239000002270 dispersing agent Substances 0.000 description 3
- 230000005686 electrostatic field Effects 0.000 description 3
- 238000003756 stirring Methods 0.000 description 3
- 230000009286 beneficial effect Effects 0.000 description 2
- 238000002485 combustion reaction Methods 0.000 description 2
- 235000013399 edible fruits Nutrition 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 239000007789 gas Substances 0.000 description 2
- 239000007787 solid Substances 0.000 description 2
- 238000005507 spraying Methods 0.000 description 2
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 description 1
- 240000002853 Nelumbo nucifera Species 0.000 description 1
- 235000006508 Nelumbo nucifera Nutrition 0.000 description 1
- 235000006510 Nelumbo pentapetala Nutrition 0.000 description 1
- 108010020147 Protein Corona Proteins 0.000 description 1
- NINIDFKCEFEMDL-UHFFFAOYSA-N Sulfur Chemical compound [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 description 1
- 239000005864 Sulphur Substances 0.000 description 1
- 238000005054 agglomeration Methods 0.000 description 1
- 238000013459 approach Methods 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- BVKZGUZCCUSVTD-UHFFFAOYSA-N carbonic acid Chemical compound OC(O)=O BVKZGUZCCUSVTD-UHFFFAOYSA-N 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 239000003245 coal Substances 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000001035 drying Methods 0.000 description 1
- 238000011049 filling Methods 0.000 description 1
- 238000010304 firing Methods 0.000 description 1
- 239000003546 flue gas Substances 0.000 description 1
- 150000002500 ions Chemical class 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000010907 mechanical stirring Methods 0.000 description 1
- 230000010355 oscillation Effects 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 230000002269 spontaneous effect Effects 0.000 description 1
- 239000000725 suspension Substances 0.000 description 1
- 238000012546 transfer Methods 0.000 description 1
Landscapes
- Electrostatic Spraying Apparatus (AREA)
Abstract
The utility model provides a kind of powder charge dispersion injection apparatus, described device includes blower, heating device, air generator, powder feeder unit, charge device and injection apparatus, and the charge device includes charged needle, charged needle rack, insulation tube, ground loop and power supply.First heating is dried to powder in device described in the utility model, reduce the liquid bridge power between powder granule, its mobility is effectively increased simultaneously, powder granule is set to carry a large amount of charges through charge device, prevent powder condensation from reuniting using the electrostatic repulsion between like charges, so that it is maintained dispersity to the maximum extent, to improve its activity, is convenient for subsequent use.
Description
Technical field
The utility model belongs to powder dispersion technology field, is related to a kind of powder charge dispersion injection apparatus.
Background technique
With the continuous development of powder industry, the application field of powder granule is more extensive, and the general granularity of ultra-fine grain
It is few compared with small, uniform quality, defect, there are a series of unique performances, but in use, ultra-fine grain is easily spontaneous solidifying
And strong reunion characteristic is shown, it is easy to generate the biggish second particle formation aggregate of partial size, influences the use effect of powder
Fruit.
Currently, common powder dispersing method mainly has machinery to be dispersed with stirring, ultrasonic vibration disperses and dispersing agent disperses etc..
The dispersion performance of mechanical stirring dispersion is general, is dispersed with stirring timeliness and does not grow and once leave stirring action, powder is possible to again
Re-form reunion；Ultrasonic vibration disperses the problem is that once stopping supersonic oscillations, it is possible to making superfines again
Degree is reunited, the too long reunion that can also cause superfines again of ultrasonic time；The dispersibility of Dispersant on Superfine powder has important
Adjustment effect, but the dosage control difficulty of dispersing agent is big, it is excessive and it is very few cannot all reach good dispersion effect, or even can
Superfines can be made to reunite.
Above method is often suitable for the dispersion of solid particle in a liquid, and in actual production, powder is in gas
Disperse also relatively conventional.Such as the process of past pot in-furnace calcium spraying is had in industry coal-boiler operational process, due to ultra-fine carbonic acid
The reunion of calcium powder body, it is difficult to make calcium powder equably suspend and be distributed in combustion zone and SO2It reacts.Due to the reunion of powder,
Reduce its specific surface area significantly, activity decline, so that desulfuration efficiency be made to substantially reduce, a large amount of particles are not reacted just
It is discharged with flue gas.
In order to which powder can keep dispersity with the long period, studying at present more is electrostatic technique, by making powder
Band like charges are mutually exclusive and maintain dispersity, therefore research and develop the charged dispersion spraying technique of superfine powder, are to solve
One of good approach of problem.
Utility model content
In view of the problems of the existing technology, the purpose of this utility model is to provide a kind of powder charges to disperse injection dress
It sets.First heating is dried to powder in device described in the utility model, then so that powder granule is carried a large amount of charges through charge device,
It prevents powder condensation from reuniting using the electrostatic repulsion between charge, so that it is maintained dispersity to the maximum extent, to improve its work
Property, be conducive to subsequent use.
For this purpose, the utility model uses following technical scheme:
The utility model provides a kind of powder charge dispersion injection apparatus, and described device includes blower, heating device, sky
Gas generating device, powder feeder unit, charge device and injection apparatus；Wherein, the heating device includes first heater and
Two heating devices；The blower is connect with first heater, and the export pipeline of pipeline and powder feeder unit after connection converges, and is converged
Pipeline after conjunction is connected with charge device, and the charge device is connected with injection apparatus；The air generator adds through second
Thermal is connected to the bottom of powder feeder unit.
The charge device includes charged needle, charged needle rack, insulation tube, ground loop and power supply；Wherein, the charged needle
It is placed in insulation tube with charged needle rack, the charged needle and charged needle rack are vertical and are connected, the charged needle rack and absolutely
Edge Guan Xianglian, the ground loop are connected around insulation tube, the power supply is surrounded with charged needle rack.
In the utility model, in order to better disperse powder, to being stored in, superfine powder in powder feeder unit is first by heating
Pressure-air it is constantly dried, is loosened, to reduce the liquid bridge power between powder granule, while increasing its mobility；It
Afterwards, it mixes and is heated with the high-speed flow that blower is formed from the powder that powder feeder unit flows out, enter charge device jointly, make powder
Body particle carries upper a large amount of electrostatic charges, prevents intergranular mutual reunion using the electrostatic repulsion between electrically charged particle, makes at its
In the dispersity of substantially uniformity, there is optimum activity state, finally sprayed by the injection apparatus of front end.In the process,
Making powder granule charged to greatest extent is the key that realize powder dispersion, anti-agglomeration.
The key of device described in the utility model is charge device, the charged needle and charged needle rack of the charge device
It is mounted in insulation tube, charged needle is connected by bracket with power supply, and power supply, charged needle and ground loop form a stronger corona
, due to the charged effect of electrostatic field when making powder granule by the insulation tube, keep powder charged to greatest extent, to make
There are biggish coulomb repulsion power for intergranular.
It is used as the preferred technical solution of the utility model below, but not as the limit of technical solution provided by the utility model
System, by the following technical programs, can preferably reach and realize the technical purpose and beneficial effect of the utility model.
As the preferred technical solution of the utility model, the blower is roots blower.
As the preferred technical solution of the utility model, the air generator is air powder mixture generator.
As the preferred technical solution of the utility model, the powder feeder unit is feed powder storehouse.
As the preferred technical solution of the utility model, the export pipeline of the powder feeder unit sets discharge valve.
In the utility model, the powder in feed powder storehouse needs first before entering charge device by the pressure-air after heating
It is dried, loosens, powder reaches transfer pipeline through discharge valve, is heated again by high-speed flow, keeps filling during transportation
Divide drying, to reduce particle liquid bridge power, creates optimum condition for intergranular dispersion in next step.
As the preferred technical solution of the utility model, the ground loop is metallic ground ring.
As the preferred technical solution of the utility model, the power supply is high-voltage DC power supply, and voltage is 30kV~60kV,
Such as 30kV, 35kV, 40kV, 45kV, 50kV, 55kV or 60kV etc., it is not limited to cited numerical value, the numberical range
Interior unlisted numerical value is equally applicable.
As the preferred technical solution of the utility model, the insulation tube both ends are equipped with flange, to be fixedly connected.
As the preferred technical solution of the utility model, the injection apparatus is nozzle.
As the preferred technical solution of the utility model, the pipeline between the charge device and injection apparatus is insulation tube
Road.
In the utility model, by adjusting the voltage of high voltage power supply, make to be formed between charged needle and metallic ground ring maximum
The electrostatic field of intensity, electrostatic field is interior to have a large amount of charged ion, and for powder after the section, surface covers a large amount of electrostatic.Together
When, the pipeline between charge device and nozzle should be at state of insulation, prevent the loss of powder charge.
Compared with prior art, the utility model has the following beneficial effects:
(1) the utility model is dried before powder charge, loosens and heats, and reduces intergranular liquid bridge power, increases
Its mobility provides optimum state for the dispersion of particle；
(2) charge device used in the utility model can be such that powder granule charges to greatest extent, using between electrically charged particle
Electrostatic repulsion, prevent intergranular mutual reunion, be at uniform dispersity, there is optimum activity state.
Detailed description of the invention
Fig. 1 is the structural schematic diagram for the powder charge dispersion injection apparatus that the utility model embodiment 1 provides；
Fig. 2 is the structural schematic diagram for the charge device that the utility model embodiment 1 provides；
Wherein, 1- blower, 2- heating device, 21- first heater, 22- secondary heating mechanism, 3- air fill
It sets, 4- powder feeder unit, 5- charge device, the charged needle of 51-, the charged needle rack of 52-, 53- insulation tube, 54- ground loop, 55- power supply,
6- injection apparatus.
Specific embodiment
For the utility model is better described, it is easy to understand the technical solution of the utility model, below to the utility model
It is further described.But following embodiments is only the simple example of the utility model, does not represent or limits and is originally practical
Novel rights protection scope, scope of protection of the utility model are subject to claims.
The typical but non-limiting embodiment the following are the utility model:
Embodiment 1:
Present embodiments provide a kind of powder charge dispersion injection apparatus, the structural schematic diagram of described device as shown in Figure 1,
Including roots blower 1, heating device 2, air generator 3, feed powder storehouse 4, charge device 5 and nozzle 6；Wherein, the heating
Device 2 includes first heater 21 and secondary heating mechanism 22；The roots blower 1 is connect with first heater 21, even
The export pipeline of pipeline and feed powder storehouse 4 after connecing converges, and the pipeline after converging is connected with charge device 5, the charge device 5 with
Nozzle 6 is connected；The air generator 3 is connected to the bottom in feed powder storehouse 4 through secondary heating mechanism 22.
The structural schematic diagram of the charge device 5 is as shown in Fig. 2, include charged needle 51, charged needle rack 52, insulation tube
53, metallic ground ring 54 and power supply 55；Wherein, the charged needle 51 and charged needle rack 52 are placed in insulation tube 53, the lotus
Acusector 51 is vertical with charged needle rack 52 and is connected, and the charged needle rack 52 is connected with insulation tube 53, the metallic ground ring
54 around insulation tube 53 is surrounded, and the power supply 55 is connected with charged needle rack 52.
The export pipeline in the feed powder storehouse 4 be equipped with discharge valve, the power supply 55 be high-voltage DC power supply, voltage 30kV,
Pipeline between the charge device 5 and nozzle 6 is insulation pipeline.
Embodiment 2:
A kind of powder charge dispersion injection apparatus is present embodiments provided, described device is referring to the device in embodiment 1, area
Be not only that: the voltage of the power supply 55 is 50kV.
Powder charge dispersion injection apparatus in above embodiments is used for spray calcium process when coal-burning boiler operation, first
Calcium carbonate powder is heated by pressure-air, is dried, is mixed with high-speed flow enter charge device, powder granule jointly afterwards
A large amount of electrostatic charges in carrying, after ejection enter coal-burning boiler, calcium carbonate powder can even suspension be distributed in combustion zone, with SO2
It reacts, since powder dispersity is good, activity is higher, reduces and SO2Required gas-solid contact time when reaction can will take off
Sulphur efficiency is improved to 70%.
Comparative example 1:
This comparative example provides a kind of powder charge dispersion injection apparatus, and described device is referring to the device in embodiment 1, area
It is not only that: not including heating device 2 and air generator 3.
In this comparative example, powder and conveying wind are equally used for spray calcium mistake when coal-burning boiler operation without heating process
Cheng Shi, since calcium carbonate powder is undried, conveying and charged process in cannot reach fully dispersed, it is charged after dispersion effect
Fruit is slightly worse compared with Example 1, therefore final desulfuration efficiency is only 65%.
Comparative example 2:
This comparative example provides a kind of powder dispersion injection apparatus, and described device is referring to the device in embodiment 1, and difference is only
It is: does not include charge device 4.
In this comparative example, powder is only mixed after dry heat with conveying wind, and without charged process, it is equally used for firing
Coal burning boiler run when spray calcium process when, cannot be maintained since calcium carbonate powder does not carry electrostatic charge, after being dispersed by air-flow compared with
For a long time, final desulfuration efficiency is only 64%.
It can be seen that device described in the utility model with comparative example based on the above embodiments and first powder be dried and add
Heat reduces the liquid bridge power between powder granule, while effectively increasing its mobility, carries powder granule through charge device a large amount of
Charge prevents powder condensation from reuniting, it is made to maintain dispersity to the maximum extent using the electrostatic repulsion between like charges, thus
Improve its activity.
The Applicant declares that the utility model illustrates the detailed device of the utility model, but this reality through the foregoing embodiment
It is not limited to above-mentioned detailed device with novel, that is, it is real not mean that the utility model must rely on above-mentioned detailed device ability
It applies.It should be clear to those skilled in the art, any improvement to the utility model, to utility model device structure
Equivalence replacement and addition, the selection of concrete mode of auxiliary device etc., all fall within the protection scope of the utility model and openly
Within the scope of.
Claims (10)
1. a kind of powder charge disperses injection apparatus, which is characterized in that described device includes blower (1), heating device (2), sky
Gas generating device (3), powder feeder unit (4), charge device (5) and injection apparatus (6)；Wherein, the heating device (2) includes the
One heating device (21) and secondary heating mechanism (22)；The blower (1) connect with first heater (21), the pipe after connection
The export pipeline on road and powder feeder unit (4) converges, and the pipeline after converging is connected with charge device (5), the charge device (5) with
Injection apparatus (6) is connected；The air generator (3) is connected to the bottom of powder feeder unit (4) through secondary heating mechanism (22)；
The charge device (5) includes charged needle (51), charged needle rack (52), insulation tube (53), ground loop (54) and power supply
(55)；Wherein, the charged needle (51) and charged needle rack (52) are placed in insulation tube (53), the charged needle (51) and charged
Needle rack (52) is vertical and is connected, and the charged needle rack (52) is connected with insulation tube (53), and the ground loop (54) is around packet
It encloses insulation tube (53), the power supply (55) is connected with charged needle rack (52).
2. powder charge according to claim 1 disperses injection apparatus, which is characterized in that the blower (1) is Roots's wind
Machine.
3. powder charge according to claim 1 disperses injection apparatus, which is characterized in that the air generator (3)
For air powder mixture generator.
4. powder charge according to claim 1 disperses injection apparatus, which is characterized in that the powder feeder unit (4) is material
Powder cabin.
5. powder charge according to claim 1 disperses injection apparatus, which is characterized in that the powder feeder unit (4) goes out
Mouth pipeline is equipped with discharge valve.
6. powder charge according to claim 1 disperses injection apparatus, which is characterized in that the ground loop (54) is metal
Ground loop.
7. powder charge according to claim 1 disperses injection apparatus, which is characterized in that the power supply (55) is high straightening
Galvanic electricity source, voltage are 30kV~60kV.
8. powder charge according to claim 1 disperses injection apparatus, which is characterized in that insulation tube (53) both ends are set
There is flange.
9. powder charge according to claim 1 disperses injection apparatus, which is characterized in that the injection apparatus (6) is spray
Mouth.
10. powder charge according to claim 1 disperses injection apparatus, which is characterized in that the charge device (5) and spray
Pipeline between injection device (6) is insulation pipeline.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821951397.2U CN209646764U (en) | 2018-11-23 | 2018-11-23 | A kind of powder charge dispersion injection apparatus |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821951397.2U CN209646764U (en) | 2018-11-23 | 2018-11-23 | A kind of powder charge dispersion injection apparatus |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209646764U true CN209646764U (en) | 2019-11-19 |
Family
ID=68506589
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201821951397.2U Expired - Fee Related CN209646764U (en) | 2018-11-23 | 2018-11-23 | A kind of powder charge dispersion injection apparatus |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN209646764U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114452829A (en) * | 2022-01-18 | 2022-05-10 | 重庆兀盾纳米科技有限公司 | Disc type ceramic membrane and material distribution method thereof |
-
2018
- 2018-11-23 CN CN201821951397.2U patent/CN209646764U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114452829A (en) * | 2022-01-18 | 2022-05-10 | 重庆兀盾纳米科技有限公司 | Disc type ceramic membrane and material distribution method thereof |
| CN114452829B (en) * | 2022-01-18 | 2023-11-03 | 重庆兀盾纳米科技有限公司 | Disc type ceramic membrane and distribution method thereof |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20191119 |