CN105063247B - A kind of sugar refining technology using multistage membrane filtration technique purification Cane Mixed Juice - Google Patents
A kind of sugar refining technology using multistage membrane filtration technique purification Cane Mixed Juice Download PDFInfo
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Abstract
The present invention relates to a kind of techniques using membrane separation technique purification Cane Mixed Juice sugaring, the technique heats Cane Mixed Juice, alkaline matter is added in the Cane Mixed Juice of heating again and adjusts pH value, the suspended impurity in Cane Mixed Juice is subsequently isolated, such as bagasse, collect liquid phase after separating, the wherein lesser suspended impurity of partial size is removed by micro-filtrate membrane filtration again, macromolecular substances, colloid etc., the filtrate collected is set to enter the ultrafiltration membrane that molecular cut off is greater than sucrose again, it removes pigment and molecular weight is greater than the nonsugar of sucrose, clear liquid after decoloration is less than the nanofiltration membrane of sucrose molecule using molecular cut off, clear liquid is concentrated, molecular weight is less than the inorganic salts of sucrose, monosaccharide etc. is removed through nanofiltration membrane.The coloration and turbidity of syrup can be greatly lowered relative to traditional handicraft for technique of the present invention, and the content of non-saccharide macromolecular substances in syrup can also be greatly lowered, and improve the purity and yield of sucrose, are not added with the clarifying agents such as lime in main technique.
Description
Technical field
The invention belongs to refined sugar technical field, a kind of specific essence using multistage membrane filtration technique processing Cane Mixed Juice
The technique of sugaring.
Background technique
Currently, domestic cane sugar manufacture production technology mainly has lime method, sulfurous method and carbon according to the difference of clarification process
Acid system, mainly there are three processes for the clarifying treatment step in the above method: heating sugarcane juice, addition clarifying agent, precipitation and separation.It is above-mentioned
Method removes the impurity such as the non-sugar ingredient in initial syrup using clarifying agent, while reducing the coloration and turbidity of syrup, but above-mentioned
The generally existing complex process of method, percent of decolourization are low, non-sugar ingredient removal rate is low, clarifying agent consumption is big, influence the problems such as mouthfeel.
Generally passing through multiple-effect evaporation step by clear syrup makes sucrose due to high temperature concentration process for syrup progress high temperature concentration
The problems such as generation conversion and decomposition, product coloration increase, while relatively high there is also the energy consumption of evaporative phase-change.
CN103725802A discloses a kind of technique of sucrose purification, and specific steps include sucrose juicing, pre-processes, film is micro-
Filter, pre-concentration, ion exchange decoloration, desalination, MVR (mechanical vapor recompression technology) are concentrated by evaporation, crystallize, be centrifugated, do
Dry and etc., obtain crystallization of sucrose.Advantage is: sheet frame and lime precipitation step is substituted with ceramic micro filter, saves ultrafiltration work
Sequence section；It is concentrated with film, reduces the evaporation capacity of evaporation concentration equipment, reduce energy consumption, eliminate a part of inorganic salts；It is handed over ion
Decoloration impurity removal process is changed instead of stove drying technique, the sulphur residue problem in sucrose is solved, improves product quality；It is handed over ion
Desalination is changed, the effective salinity removed in sucrose mix juice；It is concentrated by evaporation using MVR, have drop reduces energy consumption；Be concentrated using film,
Separation and ion-exchange unit reduce the occupied area of equipment, reduce capital expenditure.Although above-mentioned patent has used film micro-
The technologies such as filter, ion exchange, MVR, but these are improved still that solution impurities removing efficiency is not low, percent of decolourization is low, non-sugar ingredient removal
The problems such as rate is low.
Summary of the invention
The purpose of the present invention is to provide a kind of sugar refining technologies using multistage membrane separation technique purification Cane Mixed Juice, originally
The technique is invented relative to conventional sugar production process and by new separation technology (such as common film filtering, ion
Exchange etc.) improved technique, the chromatic value and turbidity value of product can be more effectively reduced, the process of decoloration removal of impurities, drop are simplified
The cost of low decoloration clarification removal of impurities；Simultaneously relative to the single method decolourized using membrane process, the sucrose that syrup can be improved is pure
Degree and concentration；Preferably, recycling by different phase filter residue or raffinate, reduces the sucrose loss of entire technique, improves
The rate of recovery of sucrose.
The present invention provides a kind of sugar refining technology using multistage membrane separation technique purification Cane Mixed Juice, including following step
It is rapid:
1), Cane Mixed Juice is heated；
2) alkaline matter, is added in the Cane Mixed Juice of heating and adjusts pH value；
3), the Cane Mixed Juice for regulating pH value is pre-processed, the pretreatment purpose is removal Cane Mixed Juice
The impurity of middle suspension obtains filtered fluid A；
4) the filtered fluid A, is subjected to secondary filter using micro-filtration membrane technology, it is therefore an objective to it is miscellaneous to remove wherein remaining suspension
Matter, macromolecular substances, colloid obtain filtered fluid B；
5), the filtered fluid B is refiltered using ultrafiltration membrane technique, the ultrafiltration membrane is greater than by molecular cut off
The substance of sucrose removes pigment and the nonsugar greater than sucrose, obtains filtered fluid C；
6), the filtered fluid C is refiltered using Nanofiltration-membrane technique, the nanofiltration membrane by retention sucrose molecule with
And molecular weight is concentrated the filtered fluid C greater than the molecule of sucrose, removing molecular weight is less than sucrose substance, is concentrated
Liquid；
7) concentrate, is entered inspissator to continue to be concentrated, is concentrated to saturated concentration, decrease temperature crystalline, centrifugal solid-liquid point
Crystallization sugar product is obtained from after
Preferably, the pretreatment is optionally centrifugal filtration, disk filtering or sock filtration, preferably centrifugal filtration.
Preferably, in the micro-filtration membrane technology, the micro-filtration membrane module of use be optionally tubular module, wound module, in
Hollow fiber formula component and flat plate module, the pore diameter range of the microfiltration membranes are 0.1-0.8 microns, the operation temperature of microfiltration process
It is 60-95 DEG C, operating pressure 0.01-0.4MPa.
Preferably, the hyperfiltration membrane assembly is optionally wound module, tubular module, hollow fiber form component and flat
Component, the molecular cut off of the ultrafiltration membrane are 1000-5000Da, and preferably 1000Da, the operation temperature of ultra-filtration process is 60-95
DEG C, operating pressure 1.0-1.5MPa.
Preferably, the nanofiltration membrane component is wound module, and the nanofiltration retaining molecular weight is 90-400Da, preferably
200Da, the operation temperature of nanofiltration process are 60-95 DEG C, operating pressure 2.0-4.0MPa.
Preferably, the temperature of the Cane Mixed Juice heating is 60-95 DEG C, and the alkaline matter is sodium hydroxide or hydrogen
Calcium oxide, preferably sodium hydroxide, pH value 6.8-7.5.
It preferably, further include that decolorization is carried out to high-concentration and high-chromaticity raffinate caused by ultra-filtration process, including it is following
Step: after addition lime, addition sulfur dioxide, addition carbon dioxide, phosphoric acid are chemically treated, using sedimentation filtration process
Remove suspended material.
Preferably, the technique optionally further includes that will walk residue that 3) preprocessing process generates and raffinate back to sugarcane
Extraction of the juice workshop section；And/or
The high-concentration suspension dirt solution that step 4) microfiltration process is generated carries out preprocessing process back to step 3)；
And/or
The high-concentration and high-chromaticity raffinate that step 5) ultra-filtration process is generated carries out after decolorization back to step 4) micro-
Filter journey；And/or
The permeate that step 6) nanofiltration process is generated is back to juicing washing room as slurry.
Preferably, the seperation films at different levels, select organic film resistant to high temperature.
A kind of new process of Cane Mixed Juice purification sugaring using membrane process provided by the invention and conventional sugarcane refine
Process and existing development are compared, and have following feature and advantage outstanding:
1. technique of the present invention integrates filtering technique using micro-filtration-ultrafiltration-nanofiltration Multistage Membranes and replaces original mixed juice
Clarifying process is precipitated, the coloration of syrup and the content of turbidity and non-saccharide macromolecular substances can be significantly reduced, improves sugarcane
The purity of sugar, improves the yield of sucrose.
2. organic ultrafiltration membrane of aperture closer to sucrose carries out the decolorization that sucrose mixes juice, cost using cheap
Lower, percent of decolourization is higher, while reducing the addition of the clarifying agents such as lime, and products obtained therefrom is made to have better mouthfeel.
3. the juice liquid glucose after decoloration clarification is concentrated using nanofiltration membrane, the small molecule object in liquid glucose can be removed
Matter reduces ash content, while film thickening process without phase-change can greatly save the de- of liquid glucose relative to Multi-effect Evaporation Processes
Water consumption.
4. the recycling for the sugar composition that technique of the present invention is carried secretly by the processing to decoloration raffinate and wherein, such as film
Decoloration raffinate of decolorization etc. can effectively reduce the sucrose loss of entire technique, improve the yield of sucrose.
Detailed description of the invention
Fig. 1 is a kind of to refine Cane Mixed Juice sugar refining technology schematic diagram using multistage membrane filtration technique
Specific embodiment
Below with reference to embodiment, the present invention will be further described.Theme protection scope according to the present invention not only limits
In these embodiments.
Embodiment 1:
1), 200kg Cane Mixed Juice raw material, into heat exchange equipment, by low temperature exhaust heat steam or hot water heating to 60 DEG C of left sides
It is right；
2) pH to 7, is adjusted with sodium hydroxide, suspended particulate is removed through 5 microns of non-woven fabrics sock filtration, obtains filtered fluid
A；
3), the filtered fluid A is pressurized to after 0.1MPa and enters tube microfiltration membrane component, selects 0.2 micron in membrane module
Organic microfiltration membranes, driven by pressure, remaining suspension particle, macromolecular substances, colloid in the filtered fluid A etc. are cut
It stays, sucrose is completely through obtaining filtered fluid B；
4) the filtered fluid B, is continued into heating and maintains 60 DEG C, 1.0MPa is pressurized to and enters roll-to-roll ultrafiltration membrane module, film
Organic ultrafiltration membrane of molecular cut off 3000Da, driven by pressure, the remaining suspension in the filtered fluid B are selected in component
Grain, macromolecular substances, colloid, glucan, starch etc. obtain some or all of retention, and the sucrose less than retaining molecular weight obtains
To completely through, obtain filtered fluid C, analysis the result shows that, by ultrafiltration membrane, the coloration of juice reduces 70%；
5) the filtered fluid C after decoloration, is pressurized to 2.5MPa and enters rolling nanofiltration membrane component, selects and cuts in membrane module
The organic nanofiltration membrane of molecular weight 200Da is stayed, driven by pressure, moisture and small molecular organic acid, salinity etc. penetrate nanofiltration membrane, sugarcane
Sugar is retained completely and is realized concentration, obtains concentrate；
6), the obtained concentrate after nanofiltration concentration, the concentration of sucrose relative to ordinary chemical method it is peace and quiet obtain it is clear
Juice improves 50%, and purity improves 5.6%.Embodiment the result shows that, technique of the invention can effectively reduce the coloration of syrup,
Improve the purity and concentration of sucrose；
7) concentrate, is entered inspissator to continue to be concentrated, is concentrated to saturated concentration, decrease temperature crystalline, centrifugal solid-liquid point
Crystallization sugar product is obtained from after.
Embodiment 2:
1), 200kg Cane Mixed Juice raw material, into heat exchange equipment, by low temperature exhaust heat steam or hot water heating to 65 DEG C；
2) pH to 8, is adjusted with calcium hydroxide, suspended particulate is removed through 4000 revs/min of centrifuge, obtains filtered fluid A；
3), the filtered fluid A is pressurized to after 0.05MPa and enters hollow fiber microfiltration membrane component, selects 0.1 in membrane module
The organic hollow fiber microfiltration membranes of micron, driven by pressure, remaining suspension particle, macromolecular substances in the filtered fluid A,
Colloid etc. is retained, and sucrose is obtained completely through obtaining filtered fluid B；
4), continue the filtered fluid B to be heated to 65 DEG C or so, be pressurized to 1.0MPa and enter roll-to-roll ultrafiltration membrane module, film
Organic ultrafiltration membrane of molecular cut off 2000Da, driven by pressure, the remaining suspension in the filtered fluid B are selected in component
Grain, macromolecular colloid, glucan, starch etc. obtain some or all of retention, and the sucrose less than retaining molecular weight has obtained
Full impregnated mistake, obtains filtered fluid C, analysis the result shows that, by ultrafiltration membrane, the coloration of juice reduces 75%；
5) the filtered fluid C after decoloration, is pressurized to 2.5MPa and enters rolling nanofiltration membrane component, selects and cuts in membrane module
The organic nanofiltration membrane of molecular weight 400Da is stayed, driven by pressure, moisture and small molecular organic acid, salinity etc. penetrate nanofiltration membrane, sugarcane
Sugar is retained completely and is realized concentration, obtains concentrate；
6), the obtained concentrate after nanofiltration concentration, the concentration of sucrose relative to ordinary chemical method it is peace and quiet obtain it is clear
Juice improves 48%, and purity improves 5.8%.Embodiment the result shows that, technique of the invention can effectively reduce the coloration of syrup,
Improve the purity and concentration of sucrose；
7) concentrate, is entered inspissator to continue to be concentrated, is concentrated to saturated concentration, decrease temperature crystalline, centrifugal solid-liquid point
Crystallization sugar product is obtained from after.
Embodiment 3:
1), 200kg Cane Mixed Juice raw material, into heat exchange equipment, by low temperature exhaust heat steam or hot water heating to 70 DEG C；
2), plus alkali adjusts pH value to 7.5, removes suspended particulate through 4000 revs/min of centrifuge, obtains filtered fluid A；
3) the filtered fluid A, is pressurized to 0.05MPa and enters hollow fiber microfiltration membrane component, selection 0.1 is micro- in membrane module
The organic hollow fiber microfiltration membranes of rice, driven by pressure, remaining suspension particle, macromolecular substances, glue in the filtered fluid A
Body etc. is retained, and sucrose is obtained completely through obtaining filtered fluid B；
4), continue the filtered fluid B to be heated to 70 DEG C or so, be pressurized to 1.0MPa and enter roll-to-roll ultrafiltration membrane module, film
Organic ultrafiltration membrane of molecular cut off 1000Da, driven by pressure, the remaining suspension in the filtered fluid B are selected in component
Grain, macromolecular colloid, glucan, starch etc. obtain some or all of retention, and the sucrose less than retaining molecular weight has obtained
Full impregnated mistake, obtains filtered fluid C, analysis the result shows that, by ultrafiltration membrane, the coloration of juice reduces 78%；
5) the filtered fluid C after decoloration, is pressurized to 2.5MPa and enters rolling nanofiltration membrane component, selects and cuts in membrane module
The organic nanofiltration membrane of molecular weight 600Da is stayed, driven by pressure, moisture and small molecular organic acid, salinity etc. penetrate nanofiltration membrane, sugarcane
Sugar is retained completely and is realized concentration, obtains concentrate；
6), the obtained concentrate after nanofiltration concentration, the concentration of sucrose relative to ordinary chemical method it is peace and quiet obtain it is clear
Juice improves 47%, and purity improves 5.2%.Embodiment the result shows that, new process can effectively reduce the coloration of syrup, improve sugarcane
The purity and concentration of sugar.
7) concentrate, is entered inspissator to continue to be concentrated, is concentrated to saturated concentration, decrease temperature crystalline, centrifugal solid-liquid point
Crystallization sugar product is obtained from after.
Embodiment 4:
1), 200kg Cane Mixed Juice raw material, into heat exchange equipment, by low temperature exhaust heat steam or hot water heating to 65 DEG C；
2), plus alkali adjusts pH value to 7.5, removes suspended particulate through 4000 revs/min of centrifuge, obtains filtered fluid A；
3) the filtered fluid A, is pressurized to 0.05MPa and enters hollow fiber microfiltration membrane component, selects 0.22 in membrane module
The organic hollow fiber microfiltration membranes of micron mix remaining suspension particle, macromolecular substances, the colloid etc. in juice driven by pressure
It is retained, sucrose is obtained completely through obtaining filtered fluid B；
4), continue the filtered fluid B to be heated to 60 DEG C or so, it is pressurized to 1.0MPa and enters roll-to-roll ultrafiltration membrane module, film
Organic ultrafiltration membrane of molecular cut off 2000Da is selected in component, driven by pressure, remaining suspension particle in juice, big point
Sub- colloid, glucan, starch etc. obtain some or all of retention, less than retaining molecular weight sucrose obtain completely through,
Filtered fluid C, analysis the result shows that, by ultrafiltration membrane, the coloration of juice reduces 72%；
5) the filtered fluid C after decoloration, is pressurized to 2.5MPa and enters rolling nanofiltration membrane component, selects and cuts in membrane module
The organic nanofiltration membrane of molecular weight 200Da is stayed, driven by pressure, moisture and small molecular organic acid, salinity etc. penetrate nanofiltration membrane, sugarcane
Sugar is retained completely and is realized concentration, obtains concentrate；
6), the obtained concentrate after nanofiltration concentration, the concentration of sucrose relative to ordinary chemical method it is peace and quiet obtain it is clear
Juice improves 50%, and purity improves 4.6%.Embodiment the result shows that, technique of the invention can effectively reduce the coloration of syrup,
Improve the purity and concentration of sucrose.
7) concentrate, is entered inspissator to continue to be concentrated, is concentrated to saturated concentration, decrease temperature crystalline, centrifugal solid-liquid point
Crystallization sugar product is obtained from after.
Embodiment 5
1), 200kg sugarcane mixes juice raw material, cane sugar content 12%, through steam or hot water heating to 60 DEG C；
2) pH to 7, is adjusted with sodium hydroxide, suspended particulate is removed through 5 microns of non-woven fabrics sock filtration, obtains filtered fluid
A；
3), the filtered fluid A is pressurized to after 0.1MPa and enters tube microfiltration membrane component, selects 0.2 micron in membrane module
Organic microfiltration membranes, driven by pressure, remaining suspension particle, macromolecular substances, colloid in mixed juice etc. are retained, sucrose
It obtains completely through liquor B is obtained；
The filtered fluid B mass is 180kg, and periosteum Liquid Residue is 20kg, is directly abandoned；
4) transition fluid B described in 180kg, is continued into heating and maintains 60 DEG C or so, 1.0MPa is pressurized to and enters roll-to-roll ultrafiltration
Membrane module selects organic ultrafiltration membrane of molecular cut off 1000Da in membrane module, driven by pressure, in the filtered fluid B
Remaining suspension particle, macromolecular substances, colloid, glucan, starch etc. obtain some or all of retention, are less than film and retain molecule
The sucrose of amount is obtained completely through being obtained liquor C, the filtered fluid C mass is 162kg, and wound membrane Liquid Residue is 18kg, directly
It abandons.
Comparative test equally selects 200kg Cane Mixed Juice raw material, and the 20kg raffinate that preprocessing process generates is by sedimentation
And reenter the periosteum of microfiltration process after sock filtration and handled, 18kg permeate and 2kg Liquid Residue are obtained, Liquid Residue is straight
It connects and abandons.18kg permeate enters ultra-filtration process wound membrane after mixing with the permeate of 180kg is decolourized.Wound membrane treated penetrate
Liquid quality is 178kg, and wound membrane Liquid Residue is 20kg, and raffinate is added 1% lime and phosphoric acid, is heated to 100 DEG C and boils 10 minutes
Afterwards, supernatant being taken after sedimentation and the periosteum for reentering microfiltration process after sock filtration being handled, treated, and periosteum is residual
Staying liquid is that 2kg is directly abandoned, and permeate quality is 18kg, is merged with the feeding liquid of ultra-filtration process, realizes that each process is residual with this
The recycling of liquid further increases sucrose yield.
Show after raffinate is handled by test, the sucrose rate of recovery of two-stage film workshop section is 95.6%, and unprocessed
Membrane process, total sucrose rate of recovery only has 81%.Embodiment the result shows that, new process simultaneously uses raffinate recovery process, can be with
The effective rate of recovery for improving sucrose.
Above said content is only the embodiment of the present invention, is not intended to limit protection scope of the present invention, all utilizations
Equivalent structure or equivalent flow shift made by description of the invention and accompanying drawing content, it is directly or indirectly relevant with other
Technical field is accordingly to be regarded as being included within the scope of the present invention.
Claims (6)
1. a kind of sugar refining technology using multistage membrane separation technique purification Cane Mixed Juice, which comprises the following steps:
1), Cane Mixed Juice is heated, the temperature of heating is 60-95 DEG C；2) hydroxide, is added in the Cane Mixed Juice of heating
It is 6.8-7.5 that sodium, which adjusts pH value,；3), the Cane Mixed Juice for regulating pH value is pre-processed, the pretreatment is optionally
Centrifugal filtration, disk filtering or sock filtration, the pretreatment purpose is to remove the impurity to suspend in Cane Mixed Juice, must be filtered
Liquid A；4) the filtered fluid A, is subjected to secondary filter, in the micro-filtration membrane technology, the microfiltration membranes of use using micro-filtration membrane technology
Component is optionally tubular module, wound module, hollow fiber form component and flat plate module, the pore diameter range of the microfiltration membranes
It is 0.1-0.8 microns, the operation temperature of microfiltration process is 60-95 DEG C, operating pressure 0.01-0.4MPa, the micro-filtration membrane technology
Purpose be to remove wherein remaining suspended impurity, macromolecular substances, colloid, obtain filtered fluid B；5), the filtered fluid B is utilized
Ultrafiltration membrane technique is refiltered, the hyperfiltration membrane assembly be optionally wound module, tubular module, hollow fiber form component or
Flat plate module, the molecular cut off of the ultrafiltration membrane are 1000-5000Da, and the operation temperature of ultra-filtration process is 60-95 DEG C, behaviour
Make pressure 1.0-1.5MPa, the ultrafiltration membrane is greater than the substance of sucrose by molecular cut off, removes pigment and greater than sucrose
Nonsugar obtains filtered fluid C；6), the filtered fluid C is refiltered using Nanofiltration-membrane technique, the nanofiltration membrane component is
Wound module, the nanofiltration retaining molecular weight are 90-400Da, and the operation temperature of nanofiltration process is 60-95 DEG C, operating pressure
2.0-4.0MPa, the nanofiltration membrane by retention sucrose molecule and molecular weight be greater than sucrose molecule to the filtered fluid C into
Row concentration, removing molecular weight are less than sucrose substance, obtain concentrate；7) concentrate, is entered inspissator to continue to be concentrated, it is dense
It is reduced to saturated concentration, decrease temperature crystalline obtains crystallization sugar product after centrifugal solid-liquid separation；
Wherein, seperation films at different levels select organic film resistant to high temperature.
2. technique according to claim 1, it is characterised in that: the pretreatment is centrifugal filtration.
3. technique according to claim 1 or 2, it is characterised in that: the molecular cut off of the ultrafiltration membrane is 1000Da.
4. technique according to claim 3, it is characterised in that: the nanofiltration retaining molecular weight is 200Da.
5. technique according to claim 1, it is characterised in that: further include to high-concentration and high-chromaticity caused by ultra-filtration process
Raffinate carries out decolorization, comprising the following steps: addition lime, addition sulfur dioxide, addition carbon dioxide, phosphoric acid carry out chemistry
After processing, suspended material is removed using sedimentation filtration process.
6. technique according to claim 4 or 5, it is characterised in that: the technique optionally further includes locating step 3) in advance
The residue and raffinate that reason process generates return to extracting sugarcane juice workshop section；And/or the high-density suspended for generating step 4) microfiltration process
Floating dirt solution carries out preprocessing process back to step 3)；And/or the high-concentration and high-chromaticity for generating step 5) ultra-filtration process
Raffinate carries out microfiltration process back to step 4) after decolorization；And/or the permeate that step 6) nanofiltration process generates is returned
Juicing washing room is returned to as slurry.
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| CN108220485A (en) * | 2016-12-10 | 2018-06-29 | 湖南尔康制药股份有限公司 | A kind of method of gradient centrifugation extraction sucrose |
| CN108203739A (en) * | 2016-12-19 | 2018-06-26 | 湖南尔康制药股份有限公司 | A kind of process for purification of medical cane sugar |
| CN107937628A (en) * | 2017-05-23 | 2018-04-20 | 中国科学院过程工程研究所 | The cane sugar manufacture system and its processing method that a kind of full constituent utilizes |
| CN108588290A (en) * | 2018-05-10 | 2018-09-28 | 中国科学院过程工程研究所 | The system and its processing method of pigment and sugar in molasses are recycled in a kind of classification |
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