CN107988437A - A kind of technique that STEVIA REBAUDIANA immersion ability is strengthened by vibrating screen - Google Patents
A kind of technique that STEVIA REBAUDIANA immersion ability is strengthened by vibrating screen Download PDFInfo
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- CN107988437A CN107988437A CN201711226260.0A CN201711226260A CN107988437A CN 107988437 A CN107988437 A CN 107988437A CN 201711226260 A CN201711226260 A CN 201711226260A CN 107988437 A CN107988437 A CN 107988437A
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- C—CHEMISTRY; METALLURGY
- C13—SUGAR INDUSTRY
- C13B—PRODUCTION OF SUCROSE; APPARATUS SPECIALLY ADAPTED THEREFOR
- C13B20/00—Purification of sugar juices
- C13B20/16—Purification of sugar juices by physical means, e.g. osmosis or filtration
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- C—CHEMISTRY; METALLURGY
- C13—SUGAR INDUSTRY
- C13B—PRODUCTION OF SUCROSE; APPARATUS SPECIALLY ADAPTED THEREFOR
- C13B10/00—Production of sugar juices
- C13B10/08—Extraction of sugar from sugar beet with water
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Abstract
The invention discloses a kind of technique for strengthening STEVIA REBAUDIANA immersion ability by vibrating screen, comprise the following steps：Harvesting, immersion, separation vibration, flocculation, filtering absorption, separation, concentration, refined filtration be dry and sieve powder, the present invention passes through after releasing afterwards by increasing by one of vibrating screen, further separate liquid glucose and little particle stevioside leaf, isolated liquid glucose enters flocculation operation, little particle stevioside leaf feeding is invaded bubble pond and is soaked again, the immersion ability of STEVIA REBAUDIANA is improved with this, avoids the wasting of resources；Present invention process is simple, and equipment requirement is low, workable, has good society generalization application.
Description
Technical field
The present invention relates to STEVIA REBAUDIANA to process correlative technology field, more particularly to a kind of to strengthen STEVIA REBAUDIANA immersion by vibrating screen
The technique of ability.
Background technology
STEVIA REBAUDIANA for composite family more raw herbaceous plant, containing extra-high sugariness, its sugared sugariness is 300 times of sucrose, by
Universally acknowledged is plant saccharin.Proved through modern science：STEVIA REBAUDIANA has hypertension, diabetes, artery sclerosis, patients with coronary heart disease
Preferable prevention effect, drinks stevia rebaudiana tea, can help to release mental fatigue, boost metabolism, be beneficial to health, is modern
Safe healthcare sugar material.It has not only won the champion in " the sweets world ", is also called " fashionable sweet taste product ".
During STEVIA REBAUDIANA treatment process, immersion link plays the important function of extraction sugar.At traditional STEVIA REBAUDIANA
Science and engineering skill cannot meet the requirement for making full use of STEVIA REBAUDIANA, and there is STEVIA REBAUDIANA to soak the shortcomings that insufficient, so as to cause to take
Length, sugar extraction efficiency are low, influence productivity effect.Therefore, invention is a kind of strengthens STEVIA REBAUDIANA immersion ability by vibrating screen
Technique is necessary to solve the above problems.
The content of the invention
It is above-mentioned to solve it is an object of the invention to provide a kind of technique for strengthening STEVIA REBAUDIANA immersion ability by vibrating screen
The problem of being proposed in background technology.
To achieve the above object, the present invention provides following technical solution：It is a kind of that STEVIA REBAUDIANA immersion energy is strengthened by vibrating screen
The technique of power, comprises the following steps：
Step 1：Harvesting：The STEVIA REBAUDIANA tender leaf of more than ground 10~20cm is picked, removes pole after drying, will be remaining
Leaf breaks into the bag of 50~70kg, then leaf bag is transported to processing factory；
Step 2：Immersion：Add leaf about 500~600kg per groove, steep 6 times water or more to no sweet taste, first three all over walk it is sugared extremely
The raw liquid glucose tank of double salt precipitation, returns water for latter three times and is used as first three all over liquid is applied mechanically, the liquid glucose soaked out is carried out at coarse filtration through going out liquid strainer
Reason, the impurity of leaf slag and larger particles is removed；
Step 3：Separation vibration：By leaching liquor loading to the splitter for being filled with Generik fillers, soaked to separate
Liquid glucose and the separation of little particle stevioside leaf in extract, then the liquid glucose Jing Guo crude separation is put into vibrating screen and is further divided
From, the little particle stevioside leaf isolated feeding is invaded into bubble pond and is soaked again, while by under isolated liquid glucose entrance
One step process；
Step 4：Flocculation：Raw liquid glucose is squeezed at precipitation reaction tank constant volume line with pump, opens and presses the lower slowly stream of wind stirring to add
Prepared flocculant carries out precipitation reaction；Calcium oxide tune pH value is first hydrogenated with 9.5 or so (being not greater than 10), adds sulfuric acid
Ferrous iron solution, adjusts pH value 9~9.5, stands reaction 15~25 minutes, opens pump liquid glucose is squeezed into ripe liquid glucose tank and (flocculated
For ripe liquid glucose)；
Step 5：Filtering absorption：Ripe liquid glucose is squeezed into a plate and frame filter press by filter pump, adsorption precipitation in liquid glucose
Contaminant filter comes out, and clear liquid enters first-time filtrate tank, then is pumped by secondary filter a cleaner liquid squeezing into secondary plate-frame filtering, will
Because a small amount of contaminant filter for once filtering leakage comes out in liquid glucose, cleaner liquid enters secondary filtrate tank, utilizes the choosing of macroreticular resin
Adsorptivity is selected, the glucosides in liquid glucose is adsorbed, will be discharged after the separation of water, salt and impurity, meanwhile, using solving agent by resin adsorption
Glucosides afterwards desorbs, and refined desalination, the decoloration for recycling resin bed to carry out liquid glucose, clean liquid glucose, improves the total glycosides of liquid glucose
And light transmittance.
Step 6：Separation：UF membrane, by refined liquid from storage tank after seperation film machine booster pump is forced into 0.3~0.7MPa
Send to grade one filter, the alcohol liquid glucose after filtering is forced into 0.8~1.2MPa into membrane filtration through high-pressure pump, the alcohol liquid glucose after filtering
A part, which is back to after circulating tank is mixed with filtrate, reenters unit, and the liquid glucose that concentration reaches 30~35% enters UF membrane sugar
Flow container, permeate dilute alcohol are discharged into dilute alcohol liquid storage tank, are purified and reused by ethanol recovery tower；Evaporation separation, after UF membrane
Refined alcohol liquid glucose vacuum suck evaporator, adjusting quantity of steam makes heating chamber temperature control at 60~70 DEG C, keeps vacuum -0.06
Residual alcohol and part water in liquid glucose are isolated in~-0.09Mpa, evaporation, and the liquid glucose for being concentrated into 40~45% enters single steaming liquid glucose tank
Flocculation liquid is first cooled to 20~30 degree, then flocculation liquid is poured into centrifuge and is centrifuged, the time is 30~40 minutes；
Step 7：Concentration：Film concentrate, liquid glucose is diluted to 10~12%, using it is exchange resin bed to liquid glucose into advance one
Refined desalination, the decoloration of step, clean liquid glucose, refined liquid are forced into 0.4~0.6MPa from storage tank concentrated film unit booster pump
After send to grade one filter, the alcohol liquid glucose after filtering is forced into 1.0~1.2MPa through high-pressure pump and enters membrane filtration, dense after filtering
A liquid glucose part, which is back to after circulating tank is mixed with filtrate, reenters unit, and the liquid glucose that concentration reaches 30~35% is dense into film
Contracting liquid glucose tank, permeate water are discharged into recycling bins as immersion water；It is concentrated by evaporation, the refined liquid glucose vacuum suck after film is concentrated
Evaporator, adjusting quantity of steam makes one, two effect heating chamber temperature controls keep vacuum -0.06~-0.09MPa at 60~70 DEG C, steam
The moisture in liquid glucose is sent, solid content is in 50~52g/100ml in sampling detection liquid glucose, steam off valve and vacuum valve, row
Outlet valve is opened after sky, liquid glucose is pressed into concentrated sugar liquid storage tank；
Step 8：Refined filtration is dried：Concentration liquid glucose is filtered by 0.45 μm of idle filter, by the concentration liquid glucose after refined filtration by
Impeller pump enters spray drying tower with 300~400L/h flow velocitys, and the hot air heat exchange after being heated with purification is fully dry, controls inlet air
Temperature is 205~215 DEG C, and leaving air temp is 90~100 DEG C, and negative pressure is between 10~20Pa in tower；
Step 9：Sieve powder：The powder Amenorrhea wind batcher of spray drying is at the uniform velocity discharged, and is wrapped after separating coarse fodder into circular vibrating screen
Dress.
Preferably, the sieve of strainer is 30~50 mesh in the step 2, and the sieve of vibrating screen is 40 in the step 3
~60 mesh.
Preferably, the mass ratio of the solute in the step 3 leaching liquor and Generik fillers is 1：100~1：10, institute
Solute is stated to be made of RA and St.
Preferably, in the step 5 by secondary filter clear liquid by pump squeeze into pretreatment resin column tentatively cleaned
And desalination bleaching, liquid glucose is cleaned, reduces the impurity content of macroporous absorption process, during which the resin of absorption failure is regenerated.
The technique effect and advantage of the present invention：The present invention by after after releasing by increasing by one of vibrating screen, into
One step separates liquid glucose and little particle stevioside leaf, and isolated liquid glucose enters flocculation operation, and little particle stevioside leaf is sent into and is invaded
Bubble pond is soaked again, and the immersion ability of STEVIA REBAUDIANA is improved with this, avoids the wasting of resources；Present invention process is simple, and equipment will
Ask low, it is workable, there is good society generalization application.
Embodiment
Below in conjunction with the embodiment of the present invention, the technical solution in the embodiment of the present invention is clearly and completely retouched
State, it is clear that described embodiment is only part of the embodiment of the present invention, instead of all the embodiments.Based on the present invention
In embodiment, the every other implementation that those of ordinary skill in the art are obtained without making creative work
Example, belongs to the scope of protection of the invention.
Embodiment 1：
A kind of technique for strengthening STEVIA REBAUDIANA immersion ability by vibrating screen, comprises the following steps：
Step 1：Harvesting：The STEVIA REBAUDIANA tender leaf of ground above 10cm is picked, removes pole after drying, by remaining leaf
The bag of 50kg is broken into, then leaf bag is transported to processing factory；
Step 2：Immersion：Adding leaf about 500kg, 6 times water of bubble or more per groove, first three is sugared to double salt all over walking to no sweet taste
Precipitate raw liquid glucose tank, return water and be used as first three all over liquid is applied mechanically for latter three times, the liquid glucose soaked out carries out coarse filtration processing through going out liquid strainer, will
The impurity of leaf slag and larger particles removes, and the sieve of strainer is 30-50 mesh；
Step 3：Separation vibration：By leaching liquor loading to the splitter for being filled with Generik fillers, in leaching liquor
The mass ratio of solute and Generik fillers is 1：100, the solute is made of RA and St, to separate the liquid glucose in leaching liquor
Separated with little particle stevioside leaf, then the liquid glucose Jing Guo crude separation is put into vibrating screen and is further separated, vibrating screen
Sieve is 40 mesh, and the little particle stevioside leaf isolated is sent into and invades bubble pond and is soaked again, while by isolated sugar
Liquid enters the next step；
Step 4：Flocculation：Raw liquid glucose is squeezed at precipitation reaction tank constant volume line with pump, opens and presses the lower slowly stream of wind stirring to add
Prepared flocculant carries out precipitation reaction；Calcium oxide tune pH value is first hydrogenated with 9.5 or so (being not greater than 10), adds sulfuric acid
Ferrous iron solution, adjusts pH value 9, stands reaction 15 minutes, opens pump and liquid glucose is squeezed into ripe liquid glucose tank (flocculated for ripe liquid glucose)；
Step 5：Filtering absorption：Ripe liquid glucose is squeezed into a plate and frame filter press by filter pump, adsorption precipitation in liquid glucose
Contaminant filter comes out, and clear liquid enters first-time filtrate tank, then is pumped by secondary filter a cleaner liquid squeezing into secondary plate-frame filtering, will
Because a small amount of contaminant filter for once filtering leakage comes out in liquid glucose, cleaner liquid enters secondary filtrate tank, by the clear of secondary filter
Liquid pre-processes resin column progress tentatively removal of impurities and desalination bleaching by pumping to squeeze into, and cleans liquid glucose, it is miscellaneous to reduce containing for macroporous absorption process
Amount, during which regenerates the resin of absorption failure, and using the Selective adsorption of macroreticular resin, the glucosides in liquid glucose is adsorbed,
Discharged after water, salt and impurity are separated, meanwhile, the glucosides after resin adsorption is desorbed using agent is solved, recycles resin
Refined desalination, decoloration of the bed to liquid glucose progress, clean liquid glucose, improve the total glycosides of liquid glucose and light transmittance.
Step 6：Separation：UF membrane, refined liquid is sent to one from storage tank after seperation film machine booster pump is forced into 0.3MPa
Level filter, the alcohol liquid glucose after filtering are forced into 0.8MPa into membrane filtration through high-pressure pump, the alcohol liquid glucose part reflux after filtering
Unit is reentered after being mixed to circulating tank with filtrate, the liquid glucose that concentration reaches 30~35% enters UF membrane liquid glucose tank, passes through
Liquid dilute alcohol is discharged into dilute alcohol liquid storage tank, is purified and reused by ethanol recovery tower；Evaporation separation, by the refined alcohol liquid glucose after UF membrane
With vacuum suck evaporator, adjusting quantity of steam makes heating chamber temperature control at 60 DEG C, keeps vacuum -0.06Mpa, and evaporation is isolated
Flocculation liquid is first cooled to 20 degree by residual alcohol and part water in liquid glucose, the liquid glucose for being concentrated into 40% into single steaming liquid glucose tank, then will
Flocculation liquid, which is poured into centrifuge, to be centrifuged, and the time is 30 minutes；
Step 7：Concentration：Film concentrates, and liquid glucose is diluted to 10%, and liquid glucose is carried out further using exchange resin bed
Refined desalination, decoloration, clean liquid glucose, refined liquid are forced into after 0.4MPa from the concentrated film unit booster pump of storage tank and is sent to level-one
Filter, the alcohol liquid glucose after filtering are forced into 1.0MPa through high-pressure pump and enter membrane filtration, the concentrated sugar liquid part reflux after filtering
Unit is reentered after being mixed to circulating tank with filtrate, the liquid glucose that concentration reaches 30% enters film concentration liquid glucose tank, permeate water
Recycling bins are discharged into as immersion water；It is concentrated by evaporation, the refined liquid glucose vacuum suck evaporator after film is concentrated, adjusts quantity of steam
One, two effect heating chamber temperature controls is kept vacuum -0.06MPa at 60 DEG C, evaporate the moisture in liquid glucose, sampling detection sugar
Solid content is in 50g/100ml in liquid, steam off valve and vacuum valve, and outlet valve, liquid glucose press-in concentrated sugar liquid storage are opened after emptying
In tank；
Step 8：Refined filtration is dried：Concentration liquid glucose is filtered by 0.45 μm of idle filter, by the concentration liquid glucose after refined filtration by
Impeller pump enters spray drying tower with 300L/h flow velocitys, and the hot air heat exchange after being heated with purification is fully dry, controls inlet air temperature
For 205 DEG C, leaving air temp is 90 DEG C, and negative pressure is between 10Pa in tower；
Step 9：Sieve powder：The powder Amenorrhea wind batcher of spray drying is at the uniform velocity discharged, and is wrapped after separating coarse fodder into circular vibrating screen
Dress.
Embodiment 2：
A kind of technique for strengthening STEVIA REBAUDIANA immersion ability by vibrating screen, comprises the following steps：
Step 1：Harvesting：The STEVIA REBAUDIANA tender leaf of ground above 15cm is picked, removes pole after drying, by remaining leaf
The bag of 60kg is broken into, then leaf bag is transported to processing factory；
Step 2：Immersion：Adding leaf about 550kg, 6 times water of bubble or more per groove, first three is sugared to double salt all over walking to no sweet taste
Precipitate raw liquid glucose tank, return water and be used as first three all over liquid is applied mechanically for latter three times, the liquid glucose soaked out carries out coarse filtration processing through going out liquid strainer, will
The impurity of leaf slag and larger particles removes, and the sieve of strainer is 40 mesh；
Step 3：Separation vibration：By leaching liquor loading to the splitter for being filled with Generik fillers, in leaching liquor
The mass ratio of solute and Generik fillers is 1：50, the solute is made of RA and St, to separate the liquid glucose in leaching liquor and
Little particle stevioside leaf separates, then the liquid glucose Jing Guo crude separation is put into vibrating screen and is further separated, the sieve of vibrating screen
Net is 50 mesh, and the little particle stevioside leaf isolated is sent into and invades bubble pond and is soaked again, while by isolated liquid glucose
Into the next step；
Step 4：Flocculation：Raw liquid glucose is squeezed at precipitation reaction tank constant volume line with pump, opens and presses the lower slowly stream of wind stirring to add
Prepared flocculant carries out precipitation reaction；Calcium oxide tune pH value is first hydrogenated with 9.5 or so (being not greater than 10), adds sulfuric acid
Ferrous iron solution, adjusts pH value 9.3, stands reaction 20 minutes, open pump by liquid glucose squeeze into ripe liquid glucose tank (flocculated for ripe sugar
Liquid)；
Step 5：Filtering absorption：Ripe liquid glucose is squeezed into a plate and frame filter press by filter pump, adsorption precipitation in liquid glucose
Contaminant filter comes out, and clear liquid enters first-time filtrate tank, then is pumped by secondary filter a cleaner liquid squeezing into secondary plate-frame filtering, will
Because a small amount of contaminant filter for once filtering leakage comes out in liquid glucose, cleaner liquid enters secondary filtrate tank, by the clear of secondary filter
Liquid pre-processes resin column progress tentatively removal of impurities and desalination bleaching by pumping to squeeze into, and cleans liquid glucose, it is miscellaneous to reduce containing for macroporous absorption process
Amount, during which regenerates the resin of absorption failure, and using the Selective adsorption of macroreticular resin, the glucosides in liquid glucose is adsorbed,
Discharged after water, salt and impurity are separated, meanwhile, the glucosides after resin adsorption is desorbed using agent is solved, recycles resin
Refined desalination, decoloration of the bed to liquid glucose progress, clean liquid glucose, improve the total glycosides of liquid glucose and light transmittance.
Step 6：Separation：UF membrane, refined liquid is sent to one from storage tank after seperation film machine booster pump is forced into 0.5MPa
Level filter, the alcohol liquid glucose after filtering are forced into 1.0MPa into membrane filtration through high-pressure pump, the alcohol liquid glucose part reflux after filtering
Unit is reentered after being mixed to circulating tank with filtrate, the liquid glucose that concentration reaches 32% enters UF membrane liquid glucose tank, and permeate is dilute
Alcohol is discharged into dilute alcohol liquid storage tank, is purified and reused by ethanol recovery tower；Evaporation separation, by the refined alcohol liquid glucose after UF membrane with very
Suction enters evaporator, and adjusting quantity of steam makes heating chamber temperature control at 65 DEG C, keeps vacuum -0.08Mpa, and liquid glucose is isolated in evaporation
In residual alcohol and part water, be concentrated into 43% liquid glucose and enter single liquid glucose tank that steams flocculation liquid is first cooled to 25 degree, then will flocculation
Liquid is poured into centrifuge and centrifuged, and the time is 35 minutes；
Step 7：Concentration：Film concentrates, and liquid glucose is diluted to 11%, and liquid glucose is carried out further using exchange resin bed
Refined desalination, decoloration, clean liquid glucose, refined liquid are forced into after 0.5MPa from the concentrated film unit booster pump of storage tank and is sent to level-one
Filter, the alcohol liquid glucose after filtering are forced into 1.1MPa through high-pressure pump and enter membrane filtration, the concentrated sugar liquid part reflux after filtering
Unit is reentered after being mixed to circulating tank with filtrate, the liquid glucose that concentration reaches 33% enters film concentration liquid glucose tank, permeate water
Recycling bins are discharged into as immersion water；It is concentrated by evaporation, the refined liquid glucose vacuum suck evaporator after film is concentrated, adjusts quantity of steam
One, two effect heating chamber temperature controls is kept vacuum -0.07MPa at 65 DEG C, evaporate the moisture in liquid glucose, sampling detection sugar
Solid content is in 51g/100ml in liquid, steam off valve and vacuum valve, and outlet valve, liquid glucose press-in concentrated sugar liquid storage are opened after emptying
In tank；
Step 8：Refined filtration is dried：Concentration liquid glucose is filtered by 0.45 μm of idle filter, by the concentration liquid glucose after refined filtration by
Impeller pump enters spray drying tower with 350L/h flow velocitys, and the hot air heat exchange after being heated with purification is fully dry, controls inlet air temperature
For 210 DEG C, leaving air temp is 95 DEG C, and negative pressure is between 15Pa in tower；
Step 9：Sieve powder：The powder Amenorrhea wind batcher of spray drying is at the uniform velocity discharged, and is wrapped after separating coarse fodder into circular vibrating screen
Dress.
Embodiment 3：
A kind of technique for strengthening STEVIA REBAUDIANA immersion ability by vibrating screen, comprises the following steps：
Step 1：The STEVIA REBAUDIANA tender leaf of ground above 20cm is picked, removes pole after drying, remaining leaf is broken into
The bag of 70kg, then leaf bag is transported to processing factory；
Step 2：Immersion：Adding leaf about 600kg, 6 times water of bubble or more per groove, first three is sugared to double salt all over walking to no sweet taste
Precipitate raw liquid glucose tank, return water and be used as first three all over liquid is applied mechanically for latter three times, the liquid glucose soaked out carries out coarse filtration processing through going out liquid strainer, will
The impurity of leaf slag and larger particles removes, and the sieve of strainer is 50 mesh；
Step 3：Separation vibration：By leaching liquor loading to the splitter for being filled with Generik fillers, in leaching liquor
The mass ratio of solute and Generik fillers is 1：10, the solute is made of RA and St, to separate the liquid glucose in leaching liquor and
Little particle stevioside leaf separates, then the liquid glucose Jing Guo crude separation is put into vibrating screen and is further separated, the sieve of vibrating screen
Net is 60 mesh, and the little particle stevioside leaf isolated is sent into and invades bubble pond and is soaked again, while by isolated liquid glucose
Into the next step；
Step 4：Flocculation：Raw liquid glucose is squeezed at precipitation reaction tank constant volume line with pump, opens and presses the lower slowly stream of wind stirring to add
Prepared flocculant carries out precipitation reaction；Calcium oxide tune pH value is first hydrogenated with 9.5 or so (being not greater than 10), adds sulfuric acid
Ferrous iron solution, adjusts pH value 9.5, stands reaction 15~25 minutes, open pump by liquid glucose squeeze into ripe liquid glucose tank (flocculated to be ripe
Liquid glucose)；
Step 5：Filtering absorption：Ripe liquid glucose is squeezed into a plate and frame filter press by filter pump, adsorption precipitation in liquid glucose
Contaminant filter comes out, and clear liquid enters first-time filtrate tank, then is pumped by secondary filter a cleaner liquid squeezing into secondary plate-frame filtering, will
Because a small amount of contaminant filter for once filtering leakage comes out in liquid glucose, cleaner liquid enters secondary filtrate tank, by the clear of secondary filter
Liquid pre-processes resin column progress tentatively removal of impurities and desalination bleaching by pumping to squeeze into, and cleans liquid glucose, it is miscellaneous to reduce containing for macroporous absorption process
Amount, during which regenerates the resin of absorption failure, and using the Selective adsorption of macroreticular resin, the glucosides in liquid glucose is adsorbed,
Discharged after water, salt and impurity are separated, meanwhile, the glucosides after resin adsorption is desorbed using agent is solved, recycles resin
Refined desalination, decoloration of the bed to liquid glucose progress, clean liquid glucose, improve the total glycosides of liquid glucose and light transmittance.
Step 6：Separation：UF membrane, refined liquid is sent to one from storage tank after seperation film machine booster pump is forced into 0.7MPa
Level filter, the alcohol liquid glucose after filtering are forced into 1.2MPa into membrane filtration through high-pressure pump, the alcohol liquid glucose part reflux after filtering
Unit is reentered after being mixed to circulating tank with filtrate, the liquid glucose that concentration reaches 35% enters UF membrane liquid glucose tank, and permeate is dilute
Alcohol is discharged into dilute alcohol liquid storage tank, is purified and reused by ethanol recovery tower；Evaporation separation, by the refined alcohol liquid glucose after UF membrane with very
Suction enters evaporator, and adjusting quantity of steam makes heating chamber temperature control at 70 DEG C, keeps vacuum -0.09Mpa, and liquid glucose is isolated in evaporation
In residual alcohol and part water, be concentrated into 45% liquid glucose and enter single liquid glucose tank that steams flocculation liquid is first cooled to 30 degree, then will flocculation
Liquid is poured into centrifuge and centrifuged, and the time is 40 minutes；
Step 7：Concentration：Film concentrates, and liquid glucose is diluted to 12%, and liquid glucose is carried out further using exchange resin bed
Refined desalination, decoloration, clean liquid glucose, refined liquid are forced into after 0.6MPa from the concentrated film unit booster pump of storage tank and is sent to level-one
Filter, the alcohol liquid glucose after filtering are forced into 1.2MPa through high-pressure pump and enter membrane filtration, the concentrated sugar liquid part reflux after filtering
Unit is reentered after being mixed to circulating tank with filtrate, the liquid glucose that concentration reaches 35% enters film concentration liquid glucose tank, permeate water
Recycling bins are discharged into as immersion water；It is concentrated by evaporation, the refined liquid glucose vacuum suck evaporator after film is concentrated, adjusts quantity of steam
One, two effect heating chamber temperature controls is kept vacuum -0.09MPa at 70 DEG C, evaporate the moisture in liquid glucose, sampling detection sugar
Solid content is in 52g/100ml in liquid, steam off valve and vacuum valve, and outlet valve, liquid glucose press-in concentrated sugar liquid storage are opened after emptying
In tank；
Step 8：Refined filtration is dried：Concentration liquid glucose is filtered by 0.45 μm of idle filter, by the concentration liquid glucose after refined filtration by
Impeller pump enters spray drying tower with 400L/h flow velocitys, and the hot air heat exchange after being heated with purification is fully dry, controls inlet air temperature
For 215 DEG C, leaving air temp is 100 DEG C, and negative pressure is between 20Pa in tower；
Step 9：Sieve powder：The powder Amenorrhea wind batcher of spray drying is at the uniform velocity discharged, and is wrapped after separating coarse fodder into circular vibrating screen
Dress.
By more than three groups of embodiments after releasing after by increasing by one of vibrating screen, further separate liquid glucose and
Little particle stevioside leaf, isolated liquid glucose enter flocculation operation, and little particle stevioside leaf feeding is invaded bubble pond and soaked again
Bubble, wherein the immersion ability of STEVIA REBAUDIANA tender leaf is best in embodiment two, is worth highest.
Finally it should be noted that：The foregoing is only a preferred embodiment of the present invention, is not intended to limit the invention,
Although the present invention is described in detail with reference to the foregoing embodiments, for those skilled in the art, it still may be used
To modify to the technical solution described in foregoing embodiments, or equivalent substitution is carried out to which part technical characteristic,
Within the spirit and principles of the invention, any modification, equivalent replacement, improvement and so on, should be included in the present invention's
Within protection domain.
Claims (4)
1. a kind of technique that STEVIA REBAUDIANA immersion ability is strengthened by vibrating screen, it is characterised in that comprise the following steps：
Step 1：Harvesting：The STEVIA REBAUDIANA tender leaf of more than ground 10~20cm is picked, removes pole after drying, by remaining leaf
The bag of 50~70kg is broken into, then leaf bag is transported to processing factory；
Step 2：Immersion：Adding leaf about 500~600kg, 6 times water of bubble or more per groove, first three is sugared to double salt all over walking to no sweet taste
Precipitate raw liquid glucose tank, return water and be used as first three all over liquid is applied mechanically for latter three times, the liquid glucose soaked out carries out coarse filtration processing through going out liquid strainer, will
The impurity of leaf slag and larger particles removes；
Step 3：Separation vibration：By leaching liquor loading to the splitter for being filled with Generik fillers, to separate leaching liquor
In liquid glucose and the separation of little particle stevioside leaf, then the liquid glucose Jing Guo crude separation is put into vibrating screen and is further separated,
The little particle stevioside leaf isolated feeding is invaded bubble pond to be soaked again, while isolated liquid glucose is entered in next step
Process；
Step 4：Flocculation：Raw liquid glucose is squeezed at precipitation reaction tank constant volume line with pump, the lower slowly stream of pressure wind stirring is opened plus has prepared
Good flocculant carries out precipitation reaction；Calcium oxide tune pH value is first hydrogenated with 9.5 or so (being not greater than 10), adds ferrous sulfate
Solution, adjusts pH value 9~9.5, stands reaction 15~25 minutes, open pump by liquid glucose squeeze into ripe liquid glucose tank (flocculated to be ripe
Liquid glucose)；
Step 5：Filtering absorption：Ripe liquid glucose is squeezed into a plate and frame filter press by filter pump, the impurity of adsorption precipitation in liquid glucose
Filter out, clear liquid enters first-time filtrate tank, then is pumped by secondary filter a cleaner liquid squeezing into secondary plate-frame filtering, by liquid glucose
Middle a small amount of contaminant filter because once filtering leakage comes out, and cleaner liquid enters secondary filtrate tank, is inhaled using the selection of macroreticular resin
Attached property, the glucosides in liquid glucose is adsorbed, and will be discharged after the separation of water, salt and impurity, meanwhile, using solving agent by after resin adsorption
Glucosides desorbs, and recycles the resin bed refined desalination, the decoloration that are carried out to liquid glucose, cleans liquid glucose, improve the total glycosides of liquid glucose with it is saturating
Luminosity.
Step 6：Separation：UF membrane, refined liquid is sent after seperation film machine booster pump is forced into 0.3~0.7MPa from storage tank to
Grade one filter, the alcohol liquid glucose after filtering are forced into 0.8~1.2MPa into membrane filtration, the alcohol liquid glucose after filtering one through high-pressure pump
Divide to be back to after circulating tank is mixed with filtrate and reenter unit, the liquid glucose that concentration reaches 30~35% enters UF membrane liquid glucose
Tank, permeate dilute alcohol are discharged into dilute alcohol liquid storage tank, are purified and reused by ethanol recovery tower；Evaporation separation, by the essence after UF membrane
Alcohol liquid glucose vacuum suck evaporator processed, adjusting quantity of steam makes heating chamber temperature control at 60~70 DEG C, keeps vacuum -0.06
Residual alcohol and part water in liquid glucose are isolated in~-0.09Mpa, evaporation, and the liquid glucose for being concentrated into 40~45% enters single steaming liquid glucose tank
Flocculation liquid is first cooled to 20~30 degree, then flocculation liquid is poured into centrifuge and is centrifuged, the time is 30~40 minutes；
Step 7：Concentration：Film concentrates, and liquid glucose is diluted to 10~12%, and liquid glucose is carried out further using exchange resin bed
Refined desalination, decoloration, clean liquid glucose, are sent after refined liquid is forced into 0.4~0.6MPa from storage tank concentrated film unit booster pump
To grade one filter, the alcohol liquid glucose after filtering is forced into 1.0~1.2MPa through high-pressure pump and enters membrane filtration, the concentrated sugar liquid after filtering
A part, which is back to after circulating tank is mixed with filtrate, reenters unit, and the liquid glucose that concentration reaches 30~35% enters film concentration sugar
Flow container, permeate water are discharged into recycling bins as immersion water；It is concentrated by evaporation, the refined liquid glucose after film is concentrated is evaporated with vacuum suck
Device, adjusting quantity of steam makes one, two effect heating chamber temperature controls keep vacuum -0.06~-0.09MPa at 60~70 DEG C, evaporate
Moisture in liquid glucose, sampling detection liquid glucose in solid content in 50~52g/100ml, steam off valve and vacuum valve, after emptying
Outlet valve is opened, liquid glucose is pressed into concentrated sugar liquid storage tank；
Step 8：Refined filtration is dried：Concentration liquid glucose is filtered by 0.45 μm of idle filter, by the concentration liquid glucose after refined filtration by rotor
Pump enters spray drying tower with 300~400L/h flow velocitys, and the hot air heat exchange after being heated with purification is fully dry, controls inlet air temperature
For 205~215 DEG C, leaving air temp is 90~100 DEG C, and negative pressure is between 10~20Pa in tower；
Step 9：Sieve powder：The powder Amenorrhea wind batcher of spray drying is at the uniform velocity discharged, and is packed after separating coarse fodder into circular vibrating screen.
A kind of 2. technique that STEVIA REBAUDIANA immersion ability is strengthened by vibrating screen according to claim 3, it is characterised in that：Institute
The sieve for stating strainer in step 2 is 30~50 mesh, and the sieve of vibrating screen is 40~60 mesh in the step 3.
A kind of 3. technique that STEVIA REBAUDIANA immersion ability is strengthened by vibrating screen according to claim 1, it is characterised in that：Institute
The mass ratio for stating the solute in step 3 leaching liquor and Generik fillers is 1：100~1：10, the solute is by RA and St groups
Into.
A kind of 4. technique that STEVIA REBAUDIANA immersion ability is strengthened by vibrating screen according to claim 1, it is characterised in that：Institute
State in step 5 and squeeze into the progress of pretreatment resin column tentatively removal of impurities and desalination bleaching, sweets for cleaning by pumping by the clear liquid of secondary filter
Liquid, reduces the impurity content of macroporous absorption process, and during which the resin of absorption failure is regenerated.
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| CN110537615A (en) * | 2019-10-08 | 2019-12-06 | 扬州市君瑞企业管理有限公司 | Process for enhancing soaking capacity of stevia rebaudiana tea |
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