CN102049347A - Method for separating solid particle mixture - Google Patents
Method for separating solid particle mixture Download PDFInfo
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- CN102049347A CN102049347A CN 200910236930 CN200910236930A CN102049347A CN 102049347 A CN102049347 A CN 102049347A CN 200910236930 CN200910236930 CN 200910236930 CN 200910236930 A CN200910236930 A CN 200910236930A CN 102049347 A CN102049347 A CN 102049347A
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Abstract
The invention discloses a method for separating a solid particle mixture. The solid particle mixture comprises first solid particles and second solid particles, wherein the density of the first solid particles is less than the density of the second solid particles. The method comprises the following steps of: making slurry containing the solid particle mixture and a solvent flow; and depositing the second solid particles during the flowing to form a second solid particle layer, wherein the first solid particles continuously flow with the solvent. The method for separating the solid particle mixture is particularly suitable for removing sand particles from food solid particles such as cassava particles and the like.
Description
Technical field
The present invention relates to a kind of method of separate solid particles mixture, relate more specifically to a kind of method of removing the grains of sand in the solid particle.
Background technology
From the wholefood solid particle of solid particle, remove the grains of sand, thereby guarantee that the pure of solid particle is very important especially for food service industry.In the prior art; for realizing removing sand purpose; use the eddy flow litter cleaning machine to remove sand mostly; particularly; the slurries that solid particle is mixed with the grains of sand are by the effect of centrifugal sedimentation, make that the grains of sand of greater density are thrown toward pool wall in the slurries, and get rid of from the bottom flushing of sediment mouth; the solid particle that density is lighter is then stayed in the water, thereby realizes separating of solid particle and the grains of sand.
In eddy flow removes sand, though can remove most of grains of sand, need to use a plurality of complex component such as eddy current type settling pit, the motor that produces centrifugal force and gearbox, slurries are separated under action of centrifugal force, make the complex structure of eddy flow litter cleaning machine.In addition, for the effect of being removed sand preferably, also to provide bigger slurries pressure and centrifugal force.In order to keep certain centrifugal force, the eddy flow litter cleaning machine must be worked under enclosed environment, therefore can not continued operation, and each slurries amount of handling is restricted.
Summary of the invention
Therefore, be the eddy flow that solves prior art remove sand the operating environment complexity that exists, problem such as can not remove sand continuously, the invention provides a kind of method of the simple to operate and separate solid particles mixture that can work continuously.
The invention provides a kind of method of separate solid particles mixture; this solid particle mixture contains first solid particle and second solid particle; the density of first solid particle is less than the density of described second solid particle; this method comprises: make described solid particle mixture with flow of solvent; and make described second solid particle in flow process, deposit formation second solid particle layer; first solid particle then continues to flow with solvent, and the density of described second solid particle is greater than the density of described solvent.
The method of separate solid particles mixture of the present invention has utilized described first solid particle different with the density of described second solid particle; make the second bigger solid particle of density deposition take place and make first solid particle with flow of solvent; thereby realize separating of first solid particle and second solid particle; separation of the present invention can be used for removing sand from the raw material solid particle; and simple to operate, not needing provides high pressure slurries and centrifugal force and can carry out continuous operation with complex apparatus.
Description of drawings
Fig. 1 is to use riffler to implement a kind of sectional view of embodiment of the method for separate solid particles mixture of the present invention;
Fig. 2 is the schematic diagram that shows the playpipe of riffler.
The specific embodiment
According to the method for separate solid particles mixture of the present invention, go for various separation first solid particles and second solid particle, as long as satisfy following three conditions: the density of (1) first solid particle is less than the density of second solid particle; The density of (2) second solid particles is greater than the density of solvent; (3) first solid particles and second solid particle all are insoluble to solvent.For convenience of description, be the cassava particle with first solid particle below, second solid particle is the grains of sand, solvent is that water illustrates method of the present invention.
In the method for separate solid particles mixture of the present invention, solid particle mixture is flowed and separation in flowing with water.But this mode is unfavorable for controlling the ratio of solid particle mixture and water, makes the fluid mobility of formation inconsistent.Preferably, solid particle mixture and water are at first mixed form uniform slurries 20 (for example by stirring), slurries 20 are flowed and the separate solid particles mixture.Below, solid particle mixture is mixed under the situation that forms slurries 20 explanation with water, use the method for separate solid particles mixture of the present invention.Wherein, the consumption and the mixing time of water is not particularly limited, if can obtain mobile better, slurries 20 that viscosity is moderate.The present inventor finds, be about when the quality of water the tapioca starch particle and the grains of sand gross mass 20-100 doubly, when mixing time is 0.5-2h, can obtain mobile better, slurries 20 that viscosity is moderate, therefore, the preferred above-mentioned condition of the present invention.
The method of separate solid particles mixture of the present invention can realize with various suitable equipment.In one embodiment of the invention, as shown in Figure 1, use riffler 10 to implement the method for separate solid particles mixture of the present invention.
Because moving of streamwise takes place down in the influence of the water that the grains of sand layer 22 that grains of sand deposition forms flows easily above it, thereby accumulates on the sidewall at outlet 13 places, if overheap can overflow from exporting 13.Therefore, the method for separate solid particles mixture of the present invention can also comprise and prevents that the grains of sand layer 22 from moving freely along the flow direction of slurries 20.
Preferably, move freely along the flow direction of slurries 20 for preventing grains of sand layer 22, in the method for separate solid particles mixture of the present invention, can make slurries 20 in flow process by perpendicular to the barrier of its flow direction.Preferably, the height of this barrier is higher than the height of grains of sand layer 22, is lower than the liquid level of slurries 20.Particularly, the bottom 15 of cell body 11 can have bossing 16 and/or sunk part 17.Because the grains of sand deposit formation grains of sand layer 22 in the flow process of slurries 20 and grains of sand layer 22 is deposited on the bottom 15 of cell body 11; when grains of sand layer 22 is subjected to influence that the water of its top flows and streamwise when moving, the grains of sand can move in the sunk part 17 or be stopped by bossing 16 and can not continue streamwise and move.Even the grains of sand are deposited on the top of bossing 16 at the beginning, this part grains of sand also can move with the current of its top, is deposited on sunk part 17 then bottom.Therefore, grains of sand layer 22 can not move to the sidewall at outlet 13 places basically, thereby prevents that the grains of sand are stacked into outlet 13 and overflow from exporting 13.Preferably, as shown in Figure 1, bottom 15 has a plurality of bossings 16 and/or a plurality of sunk part 17, and is set in 15 upper edges, bottom of cell body 11 12 to arrange to outlet 13 from entering the mouth.Wherein, greater than the height of grains of sand layer 22, the liquid level of slurries 20 is higher than the height of bossing 16 to the degree of depth of the height of bossing 16 or sunk part 17 (i.e. the fluctuating of the vertical height of bottom 15).Preferably, when slurries 20 flowed in riffler 10, the top that makes bossing 16 or sunk part 17 remained 0.1-0.5m with the liquid level difference of slurries 20, thus prevent grains of sand layer 22 effectively move freely and do not hinder as far as possible flowing of slurries 20.
In said process; if first solid particle is also with the speed precipitation slower with respect to second solid particle; when the flow velocity of slurries 20 is slow; a certain amount of first solid particle can be deposited to second solid particle layer before flowing to outlet 13; thereby can't be trapped in the riffler 10 from exporting 13 outflows with water, cause a lot of wastes.Similarly, even the density of first solid particle is enough to make it to swim in fully in the solvent can not sink, but when slurries 20 flow, first solid particle may be subjected to the influence of second solid particle precipitation and deposit and be mixed in second solid particle layer with second solid particle, so also can cause a lot of wastes.
For addressing this problem; can be according to the first dissimilar solid particles; the flow velocity of control slurries 20; make slurries 20 from enter the mouth 12 flow to the outlet 13 o'clock; second solid particle is deposited to basically and forms second solid particle layer on the bottom 15; and guarantee that first solid particle is deposited to the top of the horizontal plane at outlet 13 places, promptly can flow out from exporting 13.
In addition, the method for separate solid particles mixture of the present invention can also comprise: stir second solid particle layer, make first solid particle that is mixed in second solid particle layer floating and mobile with the water of its top.Preferably, can provide extra gas stream and/or liquid stream to second solid particle layer.More preferably, can above the top layer of second solid particle layer, provide down gas stream and/or liquid stream.Wherein, the gas that forms gas stream can be not with the gas of first solid particle, second solid particle and solvent reaction, the liquid of liquid stream is preferably solvent.At first solid particle is the cassava particle, and second solid particle is the grains of sand, when solvent is water, can use air stream and/or current.
In this process, can use the gas stream and/or the liquid stream of suitable flow velocity and flow, make cassava particle in the top layer of grains of sand layer 22 float to position away from grains of sand layer 22, perhaps make the cassava particle that is mixed in the grains of sand layer 22 float to the surface of grains of sand layer 22 at least, thereby taken away by the current of grains of sand layer 22 top.Though this may make some grains of sand in the grains of sand layer 22 also floating, the grains of sand can sink rapidly because density is big, therefore can not taken away by water basically.
For implementing the step of above-mentioned gas jet stream and/or liquid stream, can be provided with riffler 10 in can gas jet stream and/or the injection apparatus that flows of liquid.Particularly, described injection apparatus comprises at least one playpipe 18, and each playpipe 18 comprises body and a plurality of hole P that are positioned on the body separately, and gas stream and/or liquid communication are crossed this hole P and sprayed.
Each playpipe 18 can be arranged in the top of grains of sand layer 22 in every way, and for example, playpipe 18 can be set to across two of riffler 10 relative sidewalls.As shown in Figure 1, playpipe 18 can be along the parallel longitudinal setting of riffler 10, perhaps along laterally the be arrangeding in parallel of riffler 10, and also can be along being predetermined angle and be arrangeding in parallel with horizontal and vertical.Certainly, playpipe 18 also can be arranged in a crossed manner.
Preferably, as shown in Figure 2, playpipe 18 is arranged on the top of grains of sand layer 22 and hole P is set to towards oblique below grains of sand layer 22 gas jet stream and/or liquid stream, the flow direction or the horizontal plane that are injection direction (Fig. 2 hollow core direction of arrow) and slurries 20 are angle A, and this angle is preferably 30-60 °.As depicted in figs. 1 and 2, playpipe 18 is provided with along horizontal (filled arrows is depicted as flow direction among Fig. 2, and flow direction is vertical) of riffler 10, and hole P is set to favour downward 45 ° of horizontal direction (shown in Fig. 2 hollow core arrow) and sprays.Thereby grains of sand layer 22 in a big way in drive the cassava particle, avoid making the grains of sand also floating simultaneously.
Obviously, can use various pumps or aspirator to make P injection in hole can regulate the gas stream and/or the liquid stream of intensity.In the method for separate solid particles mixture of the present invention, can regulate the flow velocity of slurries 20, and according to the injection intensity of the corresponding adjusting injection apparatus of this flow velocity, i.e. the flow velocity and the flow of gas stream and/or liquid stream.When the flow velocity of slurries 20 is slow, can strengthen the gas stream of injection and/or the flow velocity and the flow of liquid stream, make the cassava particle on the top layer be deposited in grains of sand layer 22 can be suspended in top, the described top layer of distance at a distance, be deposited to once more in 13 o'clock below the outlet 13 thereby avoid flowing to outlet at Sui Shui.When the flow velocity of slurries 20 is very fast, the cassava particle that the gas that injected device provides flows and/or liquid stream blows and suspend can flow to outlet 13 fast with water, during this period of time the distance of precipitation is less relatively once more, therefore can use flow velocity and flow less gas stream and/or liquid stream to reach identical effect.
In addition, slurries 20 are during with the flow rate determined, the gas stream that can reduce to spray along the flow direction of slurries 20 and/or the flow velocity and the flow of liquid stream.In the sidewall zone far away that is provided with outlet 13 along the flow direction distance of slurries 20, can use bigger gas stream of flow velocity and flow and/or liquid stream, make the cassava particle on the top layer be deposited in grains of sand layer 22 can be suspended in top, the described top layer of distance at a distance, be deposited to once more in 13 o'clock below the outlet 13 thereby avoid flowing to outlet at Sui Shui; And in the nearer zone of sidewall that is provided with outlet 13 along the flow direction distance of slurries 20, can use the less gas of flow velocity and flow stream and/or liquid stream, thus make the cassava particle floating and flow out with water in avoid the grains of sand also floating and then flow out with water.
The method of separate solid particles mixture of the present invention is particularly useful for density and differs two kinds of bigger solid particles, and for example, the density of first solid particle is no more than 60% of second density of solid particles, preferably can be 10%-50%.
In addition, when using separation method of the present invention, preferably first solid particle, second solid particle and solvent are fully mixed, more preferably, the weight of solvent be first solid particle and second solid particle gross weight 20-100 doubly.
Separate with separation method of the present invention in the embodiment of the tapioca starch and the grains of sand, in the described slurries, the weight of water be preferably the cassava and the grains of sand gross weight 20-100 doubly.The cell body of described riffler is a cuboid, and the vertical height of described riffler is preferably 0.5-0.9m, and the sunk part of described bottom and the height of bossing are 0.1-0.3m, and described bossing and sunk part account for the 40-60% of described bottom area.Described outlet bottom and the distance between the bottom be preferably 0.4-0.85m, make the liquid level difference of the top and slurries of bossing or sunk part remain 0.1-0.5m, distance between described inlet and the bottom is the top that 0.3-0.5m and described inlet penetrate into described inlet place sidewall, distance between the inlet of described riffler and the outlet place sidewall is preferably 5-7m, thereby described slurries are flowed naturally by the flow velocity of the drop between described inlet and the described outlet with 3-10m/s.The air-flow that described injection apparatus sprays or the flow velocity of current are 2-4m/s.Use described riffler to carry out repeated removing sand and operate the effect of better to be removed sand, when using described riffler to separate the cassava and the grains of sand, make slurries 20 in riffler 10, repeat to flow and to remove 95% the grains of sand 3-5 time.
Claims (15)
1. the method for a separate solid particles mixture, this solid particle mixture contains first solid particle and second solid particle, and the density of first solid particle is less than the density of described second solid particle, and this method comprises:
Make described solid particle mixture with flow of solvent; and make described second solid particle in flow process, deposit formation second solid particle layer; first solid particle then continues to flow with solvent, and the density of described second solid particle is greater than the density of described solvent.
2. method according to claim 1 wherein, makes described solid particle mixture and solvent form slurry, and this slurry is flowed.
3. method according to claim 2, wherein, this method also comprises and prevents that the described second solid particle layer streamwise from moving freely.
4. method according to claim 3, wherein, the described method that prevents that the described second solid particle layer streamwise from moving freely comprise make described slurries in flow process by perpendicular to the barrier of flow direction, the height of this barrier is higher than the height of described second solid particle layer and is lower than the liquid level of described slurries.
5. method according to claim 3, wherein, described barrier is projection and/or depression.
6. method according to claim 4, wherein, the difference of the height of described barrier and the liquid level of described slurries is 0.1m-0.5m.
7. according to any described method among the claim 2-6, wherein, this method also comprises stirs second solid particle layer, so that it is floating and with described flow of solvent to be mixed in described first solid particle in described second solid particle layer.
8. method according to claim 7, wherein, the method for described stirring is for providing gas stream and/or liquid stream to described second solid particle layer.
9. method according to claim 8, wherein, the flow velocity and the flow of gas stream and/or liquid stream are enough to make described first solid particle that is mixed in described second solid particle layer to float to the surface of second solid particle layer.
10. method according to claim 8, wherein, this method also comprises the flowing velocity according to described slurries, regulate the flow velocity and the flow of described gas stream and/or liquid stream, the flowing velocity of described slurries increases or when reducing, reduces or increase the flow velocity and the flow of described gas stream and/or liquid stream.
11. method according to claim 8, wherein, the direction of described gas stream and/or liquid stream and the flow direction of slurries are 30-60 degree angle down.
12. according to any described method among the claim 7-11, wherein, the gas of described gas stream not with described slurry reaction, the liquid of liquid stream is the solvent in the slurries.
13. method according to claim 2, wherein, the density of described first solid particle be at most described second solid particle density 60%, the density of described solvent is greater than the density of first solid particle and less than the density of described second solid particle.
14. method according to claim 2, wherein, the consumption of described solvent be described first solid particle and described second solid particle gross weight 20-100 doubly.
15. according to claim 13 or 14 described methods, wherein, described first solid particle is that size is the following tapioca starch of 2mm, described second solid particle is the grains of sand, and described solvent is a water, and the liquid level of described slurries is 0.4-0.85m, and flow velocity is 3-10m/s.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200910236930 CN102049347B (en) | 2009-11-04 | 2009-11-04 | Method for separating solid particle mixture |
| PCT/CN2010/078399 WO2011054296A1 (en) | 2009-11-04 | 2010-11-04 | Sand sedimentation tank, sand separator, and method for separating mixture of solid particles |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200910236930 CN102049347B (en) | 2009-11-04 | 2009-11-04 | Method for separating solid particle mixture |
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| CN102049347A true CN102049347A (en) | 2011-05-11 |
| CN102049347B CN102049347B (en) | 2013-05-01 |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102392054A (en) * | 2011-11-02 | 2012-03-28 | 中石油东北炼化工程有限公司吉林设计院 | Desanding method used in process for producing ethanol by adopting cassava |
| CN102989574A (en) * | 2011-12-21 | 2013-03-27 | 何德裕 | Horizontal flow type circulating water solid construction waste separator |
| CN107755341A (en) * | 2016-08-17 | 2018-03-06 | 诸暨市银生珍珠养殖有限公司 | A kind of pearl cleans sorting unit |
| CN108014912A (en) * | 2016-10-28 | 2018-05-11 | 萨摩亚商全球生物科技解决方案股份有限公司 | The method and system of separate substance |
| CN110121388A (en) * | 2017-01-09 | 2019-08-13 | 沙特基础工业全球技术有限公司 | Particle separator and particle separation method |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE2133802B2 (en) * | 1971-07-07 | 1975-09-18 | Kloeckner-Humboldt-Deutz Ag, 5000 Koeln | Process for the preparation of mineral grain mixtures according to the density and device for carrying out the process |
| CN2035272U (en) * | 1988-07-05 | 1989-04-05 | 何忠成 | Ebullition type strake |
| CN2082198U (en) * | 1990-08-27 | 1991-08-07 | 中国农业机械化科学研究院 | Trough plate bed type rice washing machine |
| CN2778389Y (en) * | 2005-03-02 | 2006-05-10 | 统一环保科技股份有限公司 | Machinery-free type separation device |
| CN2902461Y (en) * | 2006-05-17 | 2007-05-23 | 王旭光 | Particle size classification trough |
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2009
- 2009-11-04 CN CN 200910236930 patent/CN102049347B/en active Active
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102392054A (en) * | 2011-11-02 | 2012-03-28 | 中石油东北炼化工程有限公司吉林设计院 | Desanding method used in process for producing ethanol by adopting cassava |
| CN102392054B (en) * | 2011-11-02 | 2015-11-25 | 中石油东北炼化工程有限公司吉林设计院 | A kind of cassava prepares the desanding method of ethanol production process |
| CN102989574A (en) * | 2011-12-21 | 2013-03-27 | 何德裕 | Horizontal flow type circulating water solid construction waste separator |
| CN107755341A (en) * | 2016-08-17 | 2018-03-06 | 诸暨市银生珍珠养殖有限公司 | A kind of pearl cleans sorting unit |
| CN108014912A (en) * | 2016-10-28 | 2018-05-11 | 萨摩亚商全球生物科技解决方案股份有限公司 | The method and system of separate substance |
| CN110121388A (en) * | 2017-01-09 | 2019-08-13 | 沙特基础工业全球技术有限公司 | Particle separator and particle separation method |
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