CN106040393A - Water jet flow pulverizing system - Google Patents
Water jet flow pulverizing system Download PDFInfo
- Publication number
- CN106040393A CN106040393A CN201610566606.0A CN201610566606A CN106040393A CN 106040393 A CN106040393 A CN 106040393A CN 201610566606 A CN201610566606 A CN 201610566606A CN 106040393 A CN106040393 A CN 106040393A
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- China
- Prior art keywords
- coal
- water
- chamber
- nozzle
- pulverizing
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Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B02—CRUSHING, PULVERISING, OR DISINTEGRATING; PREPARATORY TREATMENT OF GRAIN FOR MILLING
- B02C—CRUSHING, PULVERISING, OR DISINTEGRATING IN GENERAL; MILLING GRAIN
- B02C19/00—Other disintegrating devices or methods
- B02C19/06—Jet mills
- B02C19/068—Jet mills of the fluidised-bed type
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B02—CRUSHING, PULVERISING, OR DISINTEGRATING; PREPARATORY TREATMENT OF GRAIN FOR MILLING
- B02C—CRUSHING, PULVERISING, OR DISINTEGRATING IN GENERAL; MILLING GRAIN
- B02C23/00—Auxiliary methods or auxiliary devices or accessories specially adapted for crushing or disintegrating not provided for in preceding groups or not specially adapted to apparatus covered by a single preceding group
- B02C23/02—Feeding devices
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- Engineering & Computer Science (AREA)
- Food Science & Technology (AREA)
- Disintegrating Or Milling (AREA)
Abstract
The invention provides a water jet flow pulverizing system which comprises a water pump system for forming high-pressure water, a material feeding system for supplying raw material coal and a water jet flow pulverizing machine, wherein the water jet flow pulverizing machine comprises a mixing chamber, a collimation pipe and a pulverizing chamber; the high-pressure water from the water pump system is converted into high-speed jet flow, and is mixed with the raw material coal from the material feeding system in the mixing chamber to obtain a mixture, and the mixture enters the collimation pipe so as to be accelerated in the collimation pipe and then is collided with a target in the pulverizing chamber, so that the raw material coal can be pulverized into a water-coal mixture. According to the water jet flow pulverizing system, the water jet flow pulverizing machine is used for pulverizing the coal, to keep the granularity of the raw material and facilitate separation. Compared with the conventional process of performing ultrafine pulverizing on the coal by ball grinding, the system for preparing water-coal slurry has the advantages that the energy consumption is greatly reduced, and the yield of clean coal is high, and the better ash removal and desulfuration effect can be achieved.
Description
Technical field
The present invention relates to the manufacture field of coal, particularly to the nappe flip length system of the system for preparing water-coal-slurry
System.
Background technology
Water-coal-slurry be a kind of by nearly 70% coal dust and the water of nearly 30% and 1% additive form coal water mixing
Thing.Can pump as liquid form product, be atomized, store, safety is better than oil, and image-stone oil equally has good mobility again
And stability.Water-coal-slurry, as a kind of oil-substituted fuel, can substitute for heavy oil and crude oil for boiler, cellar for storing things stove and combustion in IC engine.
Have that combustion efficiency is good, be prone to pipeline transportation, environment protecting obvious.The research of COAL-WATER SLURRY TECHNOLOGY, is with Coal Replacing Oil Technology Research
One of focus.
To prepare the superfine grinding that water-coal-slurry key is exactly coal efficiently.The superfine grinding of coal and developing direction thereof are to realize
The purification of coal, ultrapureization, meet the requirement the highest to coal deep processing.The macrostructure of coal is heterogeneous, including
Organic and inorganic mineral impurity, and its organic matter is made up of the maceral that multiple microstructure is different, therefore, coal micro-
Particulate processing can produce impact to the Nomenclature Composition and Structure of Complexes of each particle diameter rank coal with separation process.Result of the test is had to show, micropowder
Content of ashes, mineral composition and the trace element of the various particle diameter fine Coal grains after broken there occurs significant change, tie its physics
Structure, combustibility and pollutant release have a significant impact.The superfine grinding of coal can make Macerals and the inorganic mineral of coal
Component is effectively dissociated, and for major part coal, fully dissociates and needs to be crushed to below 10 μm.
In the technical process of current preparation water-coal-slurry, broken and pulverising apparatus power consumption accounts for the 70% of total energy consumption
Above.Traditional disintegrating process energy consumption is big, and efficiency is low, and cost is high, seriously polluted.Generally in disintegrating process, nonproductive merit is sometimes
Unexpectedly the 90% of energy consumption is reached.In crushing process, only sub-fraction energy is used for the broken of material, causes the very big wave of the energy
Take.At present, China prepares water-coal-slurry and all uses ball grinding method that coal is carried out superfine grinding, and it mainly utilizes ball mill to pulverize
Become.The principle that ball mill is pulverized is that compacting is pulverized, fatigue is pulverized.But ball mill pulverizing technique can not keep the original granule of raw material
Property, and together with impurity crushes completely with raw material, it is difficult to go the removal of impurity.Further, the grinding of coal and impurity during coal-grinding,
The abrasion of crushing medium all can cause the pollution of coal dust, grinds for a long time meanwhile, also can aggravate coal dust physics, chemical property
And the change of surface nature, the separation making next step is increasingly difficult.This most just becomes and limits the one of China water-coal-slurry development and hinder greatly
Hinder.
For solving the problems referred to above, carry out the experimentation utilizing fine Comminuting Micawith High Pressure Water Jet to prepare ultra-thin slurries.
Summary of the invention
Based on the problems referred to above, the invention provides a kind of nappe flip length system, to improve clean coal yield, improve ash disposal and take off
Sulfur effect, provides raw material for preparing water Coal Slurry, keeps the graininess of raw material, utilize sorting.
For reaching above-mentioned purpose, the present invention provides a kind of nappe flip length system, including the water pump for forming water under high pressure
System, for providing charging system and the water jet mill of feed coal.Water jet mill includes mixing chamber, collimator tube and powder
Broken room, the water under high pressure from water pump system is converted into high-speed jet and mixes in mixing chamber with the feed coal from charging system
Rear entrance collimator tube, and accelerate in collimator tube, then collide with the target in pulverizing chamber and make feed coal pulverize formation water coal
Mixture.
The present invention having the beneficial effects that compared to prior art: the present invention uses water jet mill that coal is carried out powder
Broken, principle is that stretching is pulverized, joint is pulverized, and dissociative is good, keeps the graininess of raw material, is conducive to sorting.With existing employing
The technique that ball grinding method carries out superfine grinding to coal is compared, and the energy consumption of the system for preparing water-coal-slurry of the present invention drops significantly
Low, clean coal yield is high, and is obtained in that more preferable ash disposal desulfurized effect.
Accompanying drawing explanation
Fig. 1 is the schematic diagram that the present invention prepares the system of water-coal-slurry.
Fig. 2 is charging system and the schematic diagram of water jet mill of nappe flip length system.
Fig. 3 is the schematic diagram of the charging system of nappe flip length system.
Fig. 4 is the schematic diagram of the mixing chamber of water jet mill.
Detailed description of the invention
It is described more fully with example embodiment referring now to accompanying drawing.But, example embodiment can be with multiple shape
Formula is implemented, and is not understood as limited to embodiment set forth herein；On the contrary, it is provided that these embodiments make the present invention more
Fully and completely, and by the design of example embodiment those skilled in the art is conveyed to all sidedly.In the drawings, in order to clearly
Clear, may be exaggerated the thickness of region and layer.The most identical reference represents same or similar structure, thus will save
Slightly their detailed description.
Additionally, described feature, structure or characteristic can be combined in one or more enforcement in any suitable manner
In example.In the following description, it is provided that many details thus be given and embodiments of the invention fully understood.But,
It will be appreciated by persons skilled in the art that and can put into practice technical scheme and there is no in described specific detail or more
Many, or other method, constituent element, material etc. can be used.In other cases, be not shown in detail or describe known features,
Material or operation are to avoid the major technique intention of the fuzzy present invention.
With reference to shown in Fig. 1, the present invention provides the nappe flip length system of a kind of system for preparing water-coal-slurry, wherein,
Include for preparing the system of water-coal-slurry: nappe flip length system 1, hierarchy system 2 and floatation system 3.
Nappe flip length system 1 includes the water pump system 11 for forming water under high pressure, for providing the charging system of feed coal
System 12, and water jet mill 13.
In the lump with reference to Fig. 2, water jet mill 13 includes mixing chamber 131, collimator tube 132 and pulverizing chamber 133.From water pump
The water under high pressure of system 11 enters after being converted into high-speed jet and mixing in mixing chamber 131 with the feed coal from charging system 12
Collimator tube 132, and accelerate in collimator tube 132, then collide with the target 134 in pulverizing chamber 133 and make feed coal pulverize shape
Become water coal mixtures.
The present invention for preparing in the system of water-coal-slurry, feed coal first passes through nappe flip length system and pulverizes, then passes through
Hierarchy system screens out thinner granule, then it is carried out flotation, isolates the coal particle concentrate meeting granularity requirements.The present invention
Using nappe flip length system to pulverize, principle is that stretching is pulverized, joint is pulverized, and dissociative is good, keeps the graininess of raw material, favorably
In sorting.Carrying out coal with existing employing ball grinding method compared with the technique of superfine grinding, being used for of the present invention prepares water-coal-slurry
The energy consumption of system be substantially reduced, clean coal yield is high, and is obtained in that more preferable ash disposal desulfurized effect.
With reference to Fig. 2 to Fig. 4, in the present embodiment, charging system 12 includes charging box 121 and conveying pipe 122, charging box 121
Having air inlet 123 and charge door 124, air inlet 123 is opened in the side face of charging box 121, and charge door 124 is opened in charging box
The bottom of 121, and connect with conveying pipe 122.
In the present embodiment, charging box 121 can be infundibulate, thus improves injection effect.The side face of charging box 121 uniformly sets
There are multiple air inlet 123, each air inlet 123 to connect with pneumatic carrier 125 road, thus guide air and enter charging box 121
In.
Utilize the fluidized bed principle of gas-solid phase, add multiple pneumatic carrier at the middle part of tradition charging box
125, at atmospheric pressure (pa) and water jet mill 13 mixing chamber 131 in low pressure suction (pv) under synergy, in charging box 121
Solid particle suspends by air force and carries out vertical transport, this self-priming air head with air dynamic behaviour,
Make the abundant fluidization of material of charging box 121, increase initial kinetic energy during material particles entrance mixing chamber 131, thus improve
Granule and the mixed effect of water jet.
In the present embodiment, water jet mill 13 also includes first jet 134.Mixing chamber 131 have vibration chamber 1311, the
One opening the 1312, second opening 1313 and second nozzle 1314, the first opening 1312 be opened in vibration chamber 1311 side, and with
One end of first jet 134 is connected, and the second opening 1313 is opened in the top in vibration chamber 1311, and connects with charge door 124, the
Two nozzles 1314 are opened in the opposite side in vibration chamber 1311, and connect with collimator tube 132.High-speed jet is via first jet 134
With first opening 1312 enter vibration chamber 1311, after mix in mixing chamber 131 with the feed coal from charging system 12 warp by
Second nozzle 1314 enters collimator tube 132.
Wherein, first jet 134 is in infundibulate, and the internal diameter of its other end opening is more than the internal diameter of one end open.Second spray
Mouth 1314 part stretches in vibration chamber 1311, a sidewall in neighbouring vibration chamber 1311, the end of second nozzle 1314, the second spray
The impact walls of inclination is formed between end and this sidewall of mouth 1314.The internal diameter D of the one end open of first jet 1341Equal to
The internal diameter of one opening 1312 the internal diameter D less than second nozzle 13142, the internal diameter D of second nozzle 13142Less than vibration chamber 1311
Height D.
According to the achievement in research of high-pressure water jet infrared thermal imagery, great Wo district is positioned at the initial segment of high-pressure water jet, according to
This, adjust the lateral dimension size of mixing chamber 131, makes jet great Wo district be positioned at mixing chamber 131 internal, thus by granule and water-jet
The dilution zone of stream is designed in the great Wo district of turbulent jet flow, to ensure being sufficiently mixed of granule and material.
The operation principle of water jet mill 13 is that water under high pressure forms one stable high-speed water jet by top nozzle and wears
Crossing Helmholtz to vibrate chamber 1311, due to the viscous effect of fluid, high-speed jet produces in mixing chamber 131 has certain thickness
Jet shear layer, and in shear layer produce vortex.When pressure disturbance frequency close to Helmholtz vibrate chamber 1311 from
So during frequency, this disturbance is amplified in shear layer, and vortex is presented in collar vortex and move downstream, and thing is penetrated in volume attraction
Material.Big whirlpool, when volume inhales material, has wrapped in abrasive material the inside of jet beam, and such abrasive particle is fully accelerated, and subtracts simultaneously
Few to the abrasion of abrasive jet with the energy loss that causes due to friction.
The abrasive flows formed in mixing chamber 131 is hence into collimator tube 132, due to the existence in big whirlpool in collimator tube 132,
Make granule shape in groups be distributed, and granule gradually accelerates.Collimator tube 132 is an isometrical long straight tube, suitably selects collimator tube 132
Length, while granule can be made fully to be accelerated, cavity is nascent grows up the most further.Ultimately form and there is a succession of disconnection
The jet of water body, containing material particles and cavity in water body, be by gas, the pulse cavitating jet of solid, liquid three phase composition.
Pulverizing chamber is target formula pulverizing chamber, the gas-solid dual-phase jet formed in collimator tube 132, arrives pulverizing chamber with hard
Target strong collision so that feed coal is pulverized and formed water coal mixtures.
In sum, the present invention uses water jet mill to pulverize coal, and principle is that stretching is pulverized, joint is pulverized,
Dissociative is good, keeps the graininess of raw material, is conducive to sorting.With the work that existing employing ball grinding method carries out superfine grinding to coal
Skill is compared, and the energy consumption of the system for preparing water-coal-slurry of the present invention is substantially reduced, and clean coal yield is high, and is obtained in that preferably
Ash disposal desulfurized effect.
Although exemplary embodiment describing the present invention with reference to several, it is to be understood that, term used is explanation and shows
Example and nonrestrictive term.Owing to the present invention can be embodied as the spirit without deviating from invention or reality in a variety of forms
Matter, it should therefore be appreciated that above-described embodiment is not limited to any aforesaid details, and the spirit that should be limited in appended claims
Explain widely with in scope, therefore fall into the whole changes in claim or its equivalent scope and remodeling all should be the power of enclosing
Profit requires to be contained.
Claims (7)
1. a nappe flip length system, including:
Water pump system, is used for forming water under high pressure；
Charging system, is used for providing feed coal；And
Water jet mill, it includes mixing chamber, collimator tube and pulverizing chamber, and the water under high pressure from water pump system is converted into high rapid fire
Stream also enters collimator tube with the feed coal from charging system after mix in mixing chamber, and acceleration in collimator tube, then with
Target collision in pulverizing chamber makes feed coal pulverize and forms water coal mixtures.
2. nappe flip length system as claimed in claim 1, wherein, charging system includes charging box and conveying pipe, charging box
Having air inlet and charge door, air inlet is opened in the side face of charging box, and charge door is opened in the bottom of charging box, and with conveying
Pipe is connected.
3. nappe flip length system as claimed in claim 2, wherein, charging system includes also including Pneumatic conveying pipeline, often
One air inlet is connected with Pneumatic conveying pipeline, and air enters in charging box via Pneumatic conveying pipeline and air inlet.
4. nappe flip length system as claimed in claim 1, wherein, water jet mill also includes first jet；Mixing chamber
Having vibration chamber, the first opening, the second opening and second nozzle, the first opening is opened in the side in vibration chamber, and sprays with first
One end of mouth is connected, and the second opening is opened in the top in vibration chamber, and connects with charge door, and second nozzle is opened in vibration chamber
Opposite side, and connect with collimator tube；High-speed jet enters vibration chamber via the other end of first jet and the first opening, with from
After the feed coal of charging system mixes in mixing chamber, warp is entered collimator tube by second nozzle.
5. nappe flip length system as claimed in claim 4, wherein, first jet is infundibulate, its other end opening interior
Footpath is more than the internal diameter of one end open.
6. nappe flip length system as claimed in claim 5, wherein, second nozzle part stretches into vibration intracavity, second nozzle
The sidewall in neighbouring vibration chamber, end, form the impact walls of inclination between the end of second nozzle and this sidewall.
7. nappe flip length system as claimed in claim 6, wherein, the internal diameter of interior end opening is equal to the internal diameter of the first opening also
Less than the internal diameter of second nozzle, the internal diameter of second nozzle is less than the height in vibration chamber.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610566606.0A CN106040393A (en) | 2016-07-18 | 2016-07-18 | Water jet flow pulverizing system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610566606.0A CN106040393A (en) | 2016-07-18 | 2016-07-18 | Water jet flow pulverizing system |
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| Publication Number | Publication Date |
|---|---|
| CN106040393A true CN106040393A (en) | 2016-10-26 |
Family
ID=57188694
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610566606.0A Pending CN106040393A (en) | 2016-07-18 | 2016-07-18 | Water jet flow pulverizing system |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107855197A (en) * | 2017-11-10 | 2018-03-30 | 内蒙古科技大学 | A kind of copper mine, Pb-Zn deposits throw tail method |
| CN108439384A (en) * | 2018-04-21 | 2018-08-24 | 广东明路电力电子有限公司 | A kind of graphene process equipment and its processing method |
| RU2702442C1 (en) * | 2018-12-28 | 2019-10-08 | Федеральное государственное автономное образовательное учреждение высшего образования "Сибирский федеральный университет" | Hydraulic monitor |
| CN113578487A (en) * | 2021-07-23 | 2021-11-02 | 北京协同创新食品科技有限公司 | Jet flow nozzle |
| CN115176947A (en) * | 2022-07-15 | 2022-10-14 | 广西壮族自治区农业科学院 | Preparation method of self-stable red-core pitaya whole pulp |
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| EP0052908A2 (en) * | 1980-11-25 | 1982-06-02 | Jouko Niemi | Feeding device for a jet mill |
| US4412839A (en) * | 1979-11-13 | 1983-11-01 | Ergon, Inc. | Coal treatment process |
| CN2345284Y (en) * | 1998-12-01 | 1999-10-27 | 北京科技大学 | Self-oscillation water-jet super-fine disintegrator |
| CN202845135U (en) * | 2012-05-17 | 2013-04-03 | 昆明理工大学 | High-pressure water jet crushing device |
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2016
- 2016-07-18 CN CN201610566606.0A patent/CN106040393A/en active Pending
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| US4412839A (en) * | 1979-11-13 | 1983-11-01 | Ergon, Inc. | Coal treatment process |
| EP0052908A2 (en) * | 1980-11-25 | 1982-06-02 | Jouko Niemi | Feeding device for a jet mill |
| CN2345284Y (en) * | 1998-12-01 | 1999-10-27 | 北京科技大学 | Self-oscillation water-jet super-fine disintegrator |
| CN202845135U (en) * | 2012-05-17 | 2013-04-03 | 昆明理工大学 | High-pressure water jet crushing device |
Non-Patent Citations (2)
| Title |
|---|
| 宫伟力、谢天、赵世娇、赵运天、王泽龙、吕民东: "高压水射流粉碎技术制备水煤浆超细煤粉", 《煤炭科学技术》 * |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107855197A (en) * | 2017-11-10 | 2018-03-30 | 内蒙古科技大学 | A kind of copper mine, Pb-Zn deposits throw tail method |
| CN108439384A (en) * | 2018-04-21 | 2018-08-24 | 广东明路电力电子有限公司 | A kind of graphene process equipment and its processing method |
| RU2702442C1 (en) * | 2018-12-28 | 2019-10-08 | Федеральное государственное автономное образовательное учреждение высшего образования "Сибирский федеральный университет" | Hydraulic monitor |
| CN113578487A (en) * | 2021-07-23 | 2021-11-02 | 北京协同创新食品科技有限公司 | Jet flow nozzle |
| CN115176947A (en) * | 2022-07-15 | 2022-10-14 | 广西壮族自治区农业科学院 | Preparation method of self-stable red-core pitaya whole pulp |
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