CN1089809C - Method of extraction of juice from sugar cane - Google Patents
Method of extraction of juice from sugar cane Download PDFInfo
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- CN1089809C CN1089809C CN96123431A CN96123431A CN1089809C CN 1089809 C CN1089809 C CN 1089809C CN 96123431 A CN96123431 A CN 96123431A CN 96123431 A CN96123431 A CN 96123431A CN 1089809 C CN1089809 C CN 1089809C
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- juice
- displacement
- conveyer
- bagasse
- sugarcane
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Abstract
The present invention provides a counterflow extraction process for continuously extracting juice from plant fiber material layers of plants, such as sugarcane, etc. The extraction process comprises a plurality of steps (preferably 3 steps), wherein each step comprises the following courses of air discharge, juice replacement by a pure fluid plug extraction method, and the discharge of replaced juice and replacement media.
Description
Technical field
The present invention relates to a kind of device that is used for the method for sugar-refining industry extraction juice from sugar cane and implements aforesaid method.
Background technology
Contain the rich syrup liquid that need extract in sugarcane, these juice are stored in the crackly plant torage cell.Such as the method for getting the raw materials ready that sugarcane is cut into pieces, 94% water torage cell is broken, and form a kind of mixture of forming by rich syrup liquid and vegetable fibre.Vegetable fibre wherein contains most of low-purity material; In torage cell disruptive process, these low-purity materials are difficult for destroyed.
Traditional juice extracting process, for example dry type pressure extraction method, leaching and diafiltration extracting process all can not utilize the constructional feature of the sugarcane raw material of having got ready.Although advanced technically, these methods still are celebrated with poor efficiency.
In theory, fully can water juice be carried out the material displacement and reach the purpose that water extracts from vegetable fibre.This point is just recognized by Mtthey that as far back as 1889 Mtthey is the patent of UK 21021 because of his simple extraction operation number of patenting also.
According to reference, utilize water and water mutually adverse current can finish this displacement extraction well.In this extraction process, as piston, the forward position of the water surface (plug flow) pushes the disruptive vegetable cell to, thereby juice is cemented out.
In order to realize an effective piston flow displacement extracting system, the raw material layer that vegetable fibre and juice are formed can not have any destruction, otherwise will cause water to walk around these raw materials, and further cause the displacement juice of internal system and quilt to replace mixing mutually between juice, thereby the flow of reverse current is reduced, and the effect that finally causes the method by extruding that water is evicted from is undesirable.
Hence one can see that, and the formation of an idealized system should be: shape invariance and the firm raw material layer that is made of vegetable fibre and juice, the water in the form of piston and the juice that are flowing.
This ideal situation is difficult to reach commercial scale, but can by keep raw material layer at a level attitude shape invariance, and piston flow liquid displacement process is assigned to the several stages in addition realization approx of the extraction process that carries out of getting on.
Joel Silver formula loop type extractor is according to this principle work, but it comprises the extraction process in 18 stages.In this extraction process, water is annotated above the successive raw material layer, and sees through moving raw material layer, splashes into the juice isolation channel that is positioned at the below.Why so long this extraction process is, be because displacement juice with taken place by displacement juice mix phenomenon mutually, make piston flow displacement usefulness not reach the ideal effect.
It is that a large amount of air appears in the raw material layer that another one is considered to hinder the factor that efficient improves.When batch diafiltration was produced in the beet tails sugar-refining industry, air was got rid of and is considered to most important.Nineteen thirty, one is called Michaelis (meichage) method for exhausting and has realized commercial applications in the extraction process of a batch diafiltration bagasse that is called Naudet.Employed air method for removing is exactly the top water that makes progress below raw material layer in this extraction process, and the water surface of raising gradually is carried to the top of raw material layer with air, and there air is discharged.But this method for exhausting always only just can be practical in the batch extraction process.
Build a high efficiency factory and must consider such basic problem: the structure of the raw material of handling and volume constitute.Usually, the sugarcane raw material of getting ready is low with volume density, the space mostly is characteristics (that is to say: the sugarcane raw material the inside has been full of air).
In order to realize a liquid glucose extraction process efficiently, must avoid raw material layer the phenomenon of condensing to occur, otherwise can cause lower rate of permeation and juice to evict rate from.Further, the space in the sugarcane raw material layer also must be filled up, and is beneficial to the mixture unrestricted flow of sugarcane and juice.
Summary of the invention
Therefore, purpose of the present invention just provide a kind of be used for extracting continuously juice from sugar cane, utilize sugarcane to get the raw materials ready method and apparatus that efficient constructional feature and that make extraction juice thoroughly improved.
For realizing above-mentioned purpose of the present invention, the invention provides a kind of method with extraction juice from sugar cane in the sugarcane, comprise multistage, successive, the counter-current extraction process, it is characterized in that being provided with three phases, the displacement medium of fs and subordinate phase are respectively the juice of discharging subordinate phase and phase III, be used as the displacement medium of phase III with water, each stage comprises with Michaelis blind enema excluding air, carry out the juice displacement by a pure piston flow extracting process, with discharge in each by metathetical juice and displacement medium in stage, wherein the Michaelis blind enema is the top liquid that makes progress below raw material layer, and the liquid level of raising gradually takes air the top of raw material layer to and drains.
The displacement extraction process of three phases of the present invention is to carry out on preferred, horizontal pull-alongs conveyer in a kind of routine.The running speed of conveyer is the flow according to bagasse, sets according to the needs of the thickness that guarantees the bagasse fluid layer between 0.3 to 0.5 meter.So just help the infiltration rate that keeps higher.In typical case, by means of hydrostatic pressure reduction, infiltration rate is 0.1 meter/t second.This is a considerable improvement for 0.1 meter/minute the infiltration rate that obtains with previous treatment process typical case.
In order to realize the extraction of high efficiency juice, the composition of juice must be about 20 times of Caulis Sacchari sinensis fiber composition in the bagasse, and promptly the shared ratio of the composition of fiber must be less than 5% in the bagasse.After satisfying these conditions, bagasse (being made up of with juice fiber) is as liquid.So also just can guarantee no longer needs bagasse is carried out the auxiliary machinery operation when carrying out Michaelis method excluding air and displacement juice.
In order to realize above-mentioned purpose of the present invention, the present invention also provides a kind of described device to comprise three phases, each stage comprises the device of getting rid of the air in the bagasse with the Michaelis blind enema, discharge by the device of displacement juice and displacement juice, described first and second stage receives the displacement medium that are used as the phase III from the juice of phase III discharge as displacement medium and water.
Description of drawings
The embodiments of the invention that will describe below need with reference to following accompanying drawing:
Fig. 1 is the side-view of a pull-alongs conveyer of operating according to extraction process of the present invention;
Fig. 2 is the side-view of an alternative type equipment;
Fig. 3 is a side-view of perforate cylinder 5 among Fig. 2.
Embodiment
In Fig. 1, knife mill 10 is supplied with conveyer with the sugarcane material of chopping.The movement velocity of conveyer is set according to sugarcane stream, is moved at the bottom of the machine of conveyer with holes so that bed thickness is approximately 0.3 meter sugarcane.
The water pump 13 of variable-ratio comes from the container 18 juice pump that Michaelis method exhaust-gas disposal is used with adj sp and adjustable pressure.Speed should be enough to guarantee that juice arrives the height on the surface that just in time covers the sugarcane bed of material that will leave conveyer Michaelis method exhaust area A on the pump of juice.
At juice displacement zone B place, replace the mode that used juice sentences a dish-type shower from superposed reservoir 15 and supply with, and be discharged on the upper cover plate of conveyer.Such mode has just been avoided the displacement medium and has been replaced mixing mutually of juice, has also just improved juice metathetical efficient.
Height by means of the 16 control juice of the self-acting valve in the liquid discharge pipe 17.Enter container 18 through liquid discharge pipe 17 downwards from the juice of juice displacement zone B and drainage region C discharge.
What should be specifically noted that is: in order to guarantee to be used for piston flow juice replacement Treatment and to discharge the required enough hydrostatic pressure reduction of bagasse that leaves each stage fast, liquid level has 2 meters at least in the receiving vessel 18 in each stage, and in 3 to 4 meters scopes of the juice height on preferably the sugarcane raw material layer pushes up in being lower than conveyer.
Second and the phase III repeat above-mentioned extraction process, unique difference is exactly that to replace sugar contained in the used juice of used juice and excluding air different.The used displacement juice of subordinate phase for pump from the phase III by the juice after the displacement, and used displacement juice of phase III actual be the water that from the dehydration mill, comes out.
The bagasse (Caulis Sacchari sinensis fiber and juice from sugar cane) that unloads from conveyer flows into pre-extracter 20 through a waterfall type chute 19.Pre-extracter 20 is mills that are made of three tilting rollers, and half juice of bagasse can be extruded.
The bagasse that comes out from pre-extracter 20 is sent to the bottom of the bagasse elevator 23 of a routine through the chute 22 (being called the Meinecke chute) of a sealing, and lift 23 is sent to the inlet chute (being called the Donelly chute) of the dehydration mill 24 that is positioned at the extraction process terminal again.Dehydration mill 24 is actually the four-roll mill machine of a routine.
Forward Fig. 2 again to, Figure 2 shows that a kind of intersection streaming juice exchange system.This system is useful for those factories with high capacity capacity.
In this system, the used juice from sugar cane of a part of Michaelis method exhaust is to add from superposed container 5, is blended in the solidity raw material (broken sugarcane material) again.And these solidity raw materials are by steeping cell 1 dilution.Bagasse after synthetic is poured open slot 4 into through twisted plate 2.
Here, the used juice of second section Michaelis method blind enema is added into, and is that the aperture on base plate pushes up up below the base plate of open slot 4 specifically, and mixed bagasse flows to juice displacement zone B under the effect of gravity.
Include a crooked base plate that many holes are arranged on it in displacement juice district, the juice stream that is displaced is just passed from these apertures.Blocked for fear of aperture, cylinder 5 these crooked base plates of scraping also have many perforation on the cylinder 5.In case the bagasse at the juice discharge area becomes too solid, cylinder 5 can assist to promote bagasse equally.On the end face of cylinder, weld 12 row's pins 6 in uniform way, all welding at the end of every row's pin and scraping wiping board 7, scraping the task that wiping board 7 is finished the crooked base plate of scraping.
Be used for metathetical juice and enter the cylinder interior that is positioned at juice displacement zone top with hole.
Also just for this function, the two ends of cylinder are open.And welding a thick steel disk in the mid-way of cylinder interior.This disc is welded on the propeller boss, and this propeller boss is again that wedge is on the rotation axis of cylinder.This cylinder is driven by the hydraulic pressure or the power motor of variable-ratio, and rotating speed is 1-2 rev/min.
The wheel rim that a box back warp outside the juice of displacement usefulness is conformed to the principle of simplicity is crossed cylinder enters and is positioned at the juice distributor disk 8 li (Fig. 3) of these inboard two ends with the lining.Juice height in the outer box of tube can be controlled, to avoid entering of air.Like this, the juice of displacement usefulness just has been distributed to above the bagasse that is positioned at the juice displacement zone uniformly, sees through bagasse again, and focuses in the water bottom, is discharged to therefrom to be positioned in the following juice collection box again.By monitoring the juice height of 9 li in juice case, a self-acting valve that is installed in the cascading water pipe is being controlled the flow size of the juice that is displaced.
Rush down in the district C juice row, air is directed to the top of bagasse layer so that residual juice inhales by managing 10 by means of hydrostatic pressure reduction, this hydrostatic pressure reduction be sugarcane layer top juice and below the juice collection box in the juice face between difference of altitude.
Bagasse after the discharge juice is discharged from one 60 ° slope by means of the effect of pin on action of gravity and the cylinder 5.Be the flowing property that increase enters the bagasse of next juice separation phase, the wheel rim of the juice process cylinder that next stage Michaelis method exhaust is used is imported into the juice distribution box 11 that is positioned at the inboard both sides of cylinder.
Bagasse is with twice same extraction process of identical order.
At this, the importance of hydrostatic pressure reduction should underline again.
In commercial diffuser, juice is effusive from opening box foraminous base plate.Like this, hydrostatic pressure reduction just can not be than thickness (1 to the 2 meter) height of sugarcane layer.In fact, because there is air the inside of sugarcane layer, this hydrostatic pressure reduction also is much smaller.
In extraction process provided by the present invention, juice is collected in the case of bottom sealing.If unload with what juice was discharged to following collection box that (by means of control valve) remains full of the state of juice in the stream pipe, so, hydrostatic pressure reduction just with the sugarcane raw material layer in juice and the difference of altitude between the juice in the collection box equate, thereby may be increased to 2 to 4 meters or more.
The effect of vent pipe is just as barometric leg, the strength of its drop-down juice just like sugarcane layer top have 2 to 4 for high juice the same.
Claims (5)
- One kind from sugarcane the extraction juice from sugar cane method, comprise multistage, successive, the counter-current extraction process, it is characterized in that being provided with three phases, the displacement medium of fs and subordinate phase are respectively the juice of discharging subordinate phase and phase III, be used as the displacement medium of phase III with water, each stage comprises with Michaelis blind enema excluding air, carry out the juice displacement by a pure piston flow extracting process, with discharge in each by metathetical juice and displacement medium in stage, wherein the Michaelis blind enema is the top liquid that makes progress below raw material layer, and the liquid level of raising gradually takes air the top of raw material layer to and drains.
- 2. according to the method for claim 1, it is characterized in that described method carries out on a horizontal pull-alongs conveyer, the running speed of conveyer is the flow according to bagasse, remains on according to the degree of depth that can make the sugarcane layer that 0.3m sets to the requirement between the 0.5m.
- 3. according to the method for claim 1, it is characterized in that the low 3-4m of liquid level of juice in liquid level is than conveyer in the collection container in each stage.
- 4. device of implementing each method among the claim 1-3, it is characterized in that described device comprises three sections, each section comprises the device of getting rid of the air in the bagasse with the Michaelis blind enema, discharge by the device of displacement juice and displacement juice, described first and second section reception is used as the 3rd section displacement medium as displacement medium and water from the juice of the 3rd section discharge.
- 5. according to the described device of claim 4, it is characterized in that being provided with the horizontal pull-alongs conveyer of a routine, the running speed of conveyer is according to the flow of bagasse, remains on according to the thickness that can make the sugarcane layer that requirement between 0.3 to 0.5m sets.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN96123431A CN1089809C (en) | 1996-12-30 | 1996-12-30 | Method of extraction of juice from sugar cane |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN96123431A CN1089809C (en) | 1996-12-30 | 1996-12-30 | Method of extraction of juice from sugar cane |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1186860A CN1186860A (en) | 1998-07-08 |
| CN1089809C true CN1089809C (en) | 2002-08-28 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN96123431A Expired - Fee Related CN1089809C (en) | 1996-12-30 | 1996-12-30 | Method of extraction of juice from sugar cane |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1089809C (en) |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2310409A2 (en) * | 1975-05-09 | 1976-12-03 | Fives Cail Babcock | Sugar extn. from cane bagasse in sepd. juice - enhanced by compression draining of bagasse after juice sepn. |
| FR2507621A1 (en) * | 1981-06-12 | 1982-12-17 | Rech Geolog Miniere | Extn. of sucrose etc. in soln. from bagasse without pressing - by agitation of crushed bagasse in ten times its wt. of solvent. |
| EP0707078A1 (en) * | 1994-09-26 | 1996-04-17 | Maxime Rivière | New canejuice displacement process |
-
1996
- 1996-12-30 CN CN96123431A patent/CN1089809C/en not_active Expired - Fee Related
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2310409A2 (en) * | 1975-05-09 | 1976-12-03 | Fives Cail Babcock | Sugar extn. from cane bagasse in sepd. juice - enhanced by compression draining of bagasse after juice sepn. |
| FR2507621A1 (en) * | 1981-06-12 | 1982-12-17 | Rech Geolog Miniere | Extn. of sucrose etc. in soln. from bagasse without pressing - by agitation of crushed bagasse in ten times its wt. of solvent. |
| EP0707078A1 (en) * | 1994-09-26 | 1996-04-17 | Maxime Rivière | New canejuice displacement process |
Also Published As
| Publication number | Publication date |
|---|---|
| CN1186860A (en) | 1998-07-08 |
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