CN109651516A - A kind of dolantin Asia raw material cornstarch processing technology - Google Patents
A kind of dolantin Asia raw material cornstarch processing technology Download PDFInfo
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Abstract
The present invention records a kind of processing technology of cornstarch, and its purpose is to improve the product yield of cornstarch processing.Belong to food processing technology field, comprising the following steps: corn storage and purification, corn soaking, broken, corase grinding and the germ separation of corn, fine grinding, separation, washing and the drying of fiber, separation, washing, the drying of starch.The present invention is compared with the existing technology, obtained starch, the over dry yield of albumen, the dregs of rice, plumule all significantly improves, also byproduct color is greatly improved, the present invention improves the immersion effect of corn, and the recovery rate of albumen is improved by original 39%-40.5% to 42%-43% or so, and fat-extraction rate is improved by original 81%-82% to 83%-84.5%, to increase the output value of product, production cost is reduced.
Description
Technical field
The present invention relates to food processing technology fields, process work in particular to a kind of dolantin Asia raw material cornstarch
Skill.
Background technique
Corn is one of world's Three major grain crops, is one of main food kind in the Northeast, in Feed Manufacturing
Occupy critical positions, producing cornstarch as raw material using corn is also the Main way that corn processing utilizes.Dolantin is sub- beautiful
Rice kind is by the good characteristic that it is cold-resistant, drought-enduring, yield is high, the maturity period is short in northwest of Heilongjiang Province area Herba Gynostemmatis.
All the time compared with conventional corn, dolantin Asia corn particle is small, and quality is hard, and content of reducing sugar is high.
Corn wet milling processing is by plumule (grease), wheat bran (fiber), soluble protein, the seitan (protein) in corn
The process of corresponding finished product is successively separated and then is processed into starch.Traditionally finished product of starch is referred to as major product, remaining is
Byproduct.Starch is produced from corn kernel, process specifically includes that corn purifies, impregnates, and is crushed, germ separation, the sieve of fiber
Divide washing, starch and Separation of Proteins, starch washing dehydration and drying etc..
According to prior art process dolantin Asia corn, there are the shortcomings that and be disadvantageous in that: 1. due to its corn
Grain is smaller, and contact area is excessive between corn particle in steeping tank, and soak circulation is unsmooth, and corn soaking effect is poor, influences to give birth to
Produce load and product yield；2., because corn particle is not of uniform size, dissociating for corn to be crushed during double wedge galls broken
Plumule, part corn particle is broken excessively, loses amount of grease, after this amount of grease enters system, will affect subsequent separation
And drying；3. content of reducing sugar is excessively high in the corn of dolantin Asia, part sugar is not consumed by lactic acid, hence into reduced sugar in corn pulp
Content increases, and Mei Lade nonenzymatic browning reaction occurs after whitewashing, causes product colour after whitewashing deep；4. dolantin is sub- beautiful after drying
Miyi is broken, in transport, purge segment, generates a large amount of broken corns, partial starch is caused to enter evaporation with old acid in soaking process
System, old acid dry matter content increase, cause in evaporation process, be easy to block evaporator tubulation.
The present invention is directed to dolantin Asia raw material corn characteristic, is adjusted on the basis of existing processing technology to it, to
Meet production requirement.
Summary of the invention
The purpose of the invention is to improve the product yield of cornstarch processing, the present invention provides a kind of dolantin Asia raw material
Production of corn starch technique.
To achieve the above object, the technical solution adopted by the present invention is as follows:
A kind of dolantin Asia raw material cornstarch processing technology, comprising the following steps:
Step 1: corn storage and purification；
Step 2: preparing sulfurous acid；
Step 3: corn soaking；
Step 4: corn is broken；
Step 5: fine grinding；
Step 6: the separation and washing of fiber；
Step 7: starch separation and washing；
Step 8: Protein Separation and drying；
Step 9: germ washing and drying；
Step 10: fiber feedstuff is dry.
Further, in step 1, raw material corn is entered into corn feeding system after weighing, screening, purification.
Further, in step 2, sulfur dioxide gas is prepared, sulfur dioxide gas is from bottom to top by equipped with multiple
The absorption tower of spray head, the process water counter current contacting with conveying, the sulfur dioxide gas and the process water generate chemical reaction
Sulfurous acid is formed, the sulfurous acid concentration of preparation is 1300-1600ppm.
Further, in step 3, sulfurous acid carries out adverse current immersion to corn, and soaking temperature is 49 DEG C -51 DEG C, impregnates
Time 30-36 hour, the soak after immersion are dilute corn pulp, and being sent to evaporization process and being concentrated to get solid content is 38%-
42% corn pulp.
Further, in step 4, the corn after immersion is broken into 4-6 valve through the worn-off of slubbing double wedge；It will be broken
Corn is sent to level-one germ cyclone, and the plumule that level-one germ cyclone top flow point separates out passes through countercurrent washing, dehydration and drying,
Dry plumule wind is sent to Oil press, and the underflow materials that level-one germ cyclone is isolated filter slurry, oversize by bent be sieved through
It is ground into two double wedges, corn is broken into 10-12 valve, and the slurry by second-time breakage is sent to second level germ cyclone, second level embryo
The top stream material of bud cyclone and the broken and bent slurry screened out is galled through slubbing double wedge being mixed, return first order plumule revolves
Device is flowed, the underflow slurry of second level germ cyclone is sent into precision grinding process.
Further, in step 5, the underflow slurry for isolating plumule through second level germ cyclone passes through pressure curved sieve,
Screenings is coarse starch milk, and oversize enters impact grinding and refined, and the slurry after fine grinding enters fibre washing bath.
Further, in step 6, slurry pumping after fine grinding to first order pressure curved sieve isolates Crude starch under sieve
Cream, oversize sieve countercurrent washing through six stage pressure songs, and washing process water is added before sieving from most rear class song and by compass screen surface, and carrying is washed
It washs the starch milk to get off to move forward step by step, until the first order, flows into fibre washing bath before sieving, under pressure curved sieve sieve before fine grinding
Object mixing, is pumped into first order pressure curved sieve jointly, isolates coarse starch milk, and the coarse starch milk isolated enters starch, seitan point
From process；Fiber, skin slag and washing water on sieve are gone against the stream, and are entered from the first order, are discharged from most rear class compass screen surface, after dehydration
The wet fiber for being 55%-65% to moisture content, wet fiber enter the dry fibre that fiber drying process output moisture content is 9%-12%
Dimension.
Further, in step 7, by the coarse starch milk isolated by desanding swirler, rotary filter, pre- dense
Division is disembarked, and is centrifuged into seitan, starch main centrifuge, and the gluten water that top flow point separates out send concentration and separation machine, underflow starch milk
It send ten second cyclones to carry out countercurrent washing and is concentrated, obtain smart starch milk, be dried.
Further, in step 8, gluten water in the step 7 through filter enter seitan concentration centrifuge from
The heart, top stream is the process water that solid content is 0.20-0.50%, into technique water pot, for plumule, fiber wash, after concentration
Underflow through be dehydrated obtain water content be 60-62% wet albumen, then wet albumen is dried with pipe bundle drier, product
Wind model is packed to packing shop to dispatch from the factory.
Further, in step 10: by step 6 wet fiber, in step 1 through screening obtained broken corn and step
Enter pipe bundle drier after corn pulp mixing in rapid three and be dried to obtain fiber feedstuff, through wind model to packing shop.
The present invention having the beneficial effect that compared with the existing technology
1, improve technique after, the over dry yield of starch, albumen, the dregs of rice, plumule all significantly improves, in addition be transformed after produce load from
100%-102% is increased to 107%-112%, illustrates that produce load and yield get a promotion after improving dolantin Asia corn soaking effect,
Oil yield is promoted from 3.8% to 4.2% simultaneously, is promoted 0.4%, is illustrated that crushing effect is improved, and is avoided to later separation and is done
Dry influence.
2, the ratio of fiber and plumule dregs of rice grade before A and B is promoted to 85% by 50% respectively after whole technique, improves
35% percentage point, byproduct color is greatly improved after illustrating adjusting process.
3, after process improving, broken corn drops to 1% by 3%, and old acid dry tends towards stability, and greatly alleviates evaporation process
The phenomenon that middle blocking evaporator tubulation.
Detailed description of the invention
Fig. 1 is cornstarch processing process figure.
Specific embodiment
The present invention will be described in detail with reference to the accompanying drawing.
Embodiment 1:
A kind of dolantin Asia raw material cornstarch processing technology, comprising the following steps:
Step 1: corn storage and purification；
Step 2: preparing sulfurous acid；
Step 3: corn soaking；
Step 4: corn is broken；
Step 5: fine grinding；
Step 6: the separation and washing of fiber；
Step 7: starch separation and washing；
Step 8: Protein Separation and drying；
Step 9: germ washing and drying；
Step 10: fiber feedstuff is dry.
Specific step is as follows:
Step 1: corn storage is with purification feeding: raw material corn is examined, is checked the weight, being checked and accepted, being taken care of, conveying purification, putting in storage (library)
Etc. links raw material cabin is added after weighing, screened out through vibration, except the processes such as stone, magnetic separation purify, purification maize storage house removed after metering；It is beautiful
Rice feeding system is to purify the corn of preliminary clearning again, the impurity such as ironware, dust is removed, to reach the mesh being fully cleaned up
's.
Step 2: preparing sulfurous acid: molten sulphur thermal insulation pool is added in solid sulfur, and solid sulfur is fused into liquid sulfur with steam
Sulphur is spare.The liquid level that the liquid sulfur of moist closet is transported to primary zone and kept constant by liquid sulfur pump, primary air fan is to primary
Combustion chamber is passed through air with the speed of 355-575m3 per hour, carries out sectional combustion (vaporization), and secondary air fan is to secondary combustion chamber
It is passed through air with the speed of 95-105m3 per hour, whirlwind is carried out with sulphur steam and is homogeneously mixed and burned (second-time burning), change
It learns reaction and generates SO2Gas.Sulfur dioxide gas is from bottom to top by being furnished with the absorption tower of multiple spray heads, process water with conveying
Counter current contacting, chemical reaction form sulfurous acid and are temporarily stored in sulfurous acid basin.
Step 3: corn soaking: corn soaking process is primarily to softening corn particle, and relatively easily from starch
Plumule, fiber, starch and albumen are isolated in grain；Sulfurous acid carries out adverse current immersion to corn, contains lactic acid and Asia in soak
Sulfuric acid, the lactic acid is corn carries out anaerobic respiration in soaking process and generates, and for softening maize peel, the lactic acid is dense
Spend 1.75%-1.95%.The sulfurous acid concentration is maintained at 1300-1600ppm, and corn soaking temperature maintains 50 ± 1 DEG C, impregnates
Time is 30-36 hours.The solid content of soak, that is, dilute corn pulp after immersion, dilute corn pulp is 6%-10%, is sent
The corn pulp that solid content is 38-42% is condensed into evaporization process.
Step 4: corn is broken: the corn after immersion enters wet jade by rockover remover, dewatering screen by wet corn delivery pump
Rice hopper enters back into slubbing double wedge mill, corn is broken into 4-6 valve, whole kernel corn is no more than 1% and isolates the embryo of 75%-85%
Bud, while releasing the starch of 20%-25%.Broken corn is pumped to level-one germ cyclone, cyclone top stream by plumule
The plumule isolated removes washing system, and underflow materials filter slurry by bent be sieved through, and oversize is ground into two double wedges, and corn is broken
It is broken into 10-12 valve, should not contain whole kernel corn in this slurry, is no more than 0.3% in conjunction with plumule.By the slurry of second-time breakage
Pump second level germ cyclone by plumule, top stream material with gall the broken and bent slurry screened out through slubbing double wedge and mix one
It rises, returns to first order germ cyclone, underflow slurry is sent into precision grinding process.
Step 5: fine grinding: the underflow grout for isolating plumule through second level germ cyclone passes through pressure curved sieve, screenings
For coarse starch milk, the Crude starch slurries isolated after coarse starch milk and fine grinding converge into starch separation process；Oversize enters
Impact grinding is refined, to the maximum extent come out the starch separation being coupled with fiber, in the slurry after grinding, and fiber connection
It ties starch and is not more than 10%.Slurry after fine grinding enters fibre washing bath.
Step 6: the separation and washing of fiber: the slurry after fine grinding enters fibre washing bath, washs fiber with later herein
Washing water one reinstate and be pumped into first order pressure curved sieve.Coarse starch milk is isolated under sieve, oversize sieves inverse through six stage pressure songs
Stream washing, washing process water are added through compass screen surface before sieving from most rear class song, and the starch milk that carrying washing gets off moves forward step by step,
It until the first order, is mixed in sink with the slurry after fine grinding before sieving, enters first order pressure curved sieve jointly, isolate Crude starch
Cream.It is mixed again with the coarse starch milk screened out before fine grinding, into starch, seitan separation process.Fiber, skin slag and washing on sieve
Process water is gone against the stream, and is entered from the first order, is discharged from most rear class compass screen surface, obtains moisture content after being dehydrated into screw extruder
For the wet fiber of 55%-65%, wet fiber enters fiber drying process, and output moisture content is the dry fibers of 9%-12%.
Step 7: starch separation and washing: passing through desanding swirler by the coarse starch milk that the bent screening in fine grinding front and back separates out, return
Rotary filter, pre-concentration seperator, into seitan, starch main centrifuge.The concentration that top flow point separates out gluten water is 1%-2%, is sent
Concentration and separation machine.Underflow starch concentration 17-19 Baume send ten second level eddy flow washers to carry out countercurrent washing.Washing water is used certainly
Water, temperature are kept for 45 DEG C, and the starch concentration for washing and being concentrated by ten second cyclones is 21-23 Baume, protein content
It is dry through smart starch milk basin desizing less than 0.35%.The first order cyclone top stream pass through clarifying centrifuge concentrate, underflow into
Main centrifuge, top stream are process water.
Step 8: Protein Separation and drying: the gluten water that flow point separates out from main seperator top, 1%-2% containing solid content or so,
Enter seitan concentration centrifuge through filter, top stream is process water, into technique water pot, solid content 0.20%-
0.50%, preparation and plumule, skin slag, fiber wash for sulfurous acid, process water used in other steps is all from this technique
The top flowing water of seitan concentration and separation machine.It is about 14% that underflow after concentration, which contains solid content, is dehydrated by filter press, vacuum degree is
0.053-0.067MPa obtains the wet albumen that water content is 60%-62%, then by the pipe bundle drier drying of wet albumen, product wind
Power is transported to packing shop packaging factory.
Step 9: germ washing, drying: the plumule that flow point separates out from first order germ cyclone top is sieved by three-level song
Countercurrent washing, water content 75% are dehydrated into plumule extruder, by dewatered wet embryo bud water content about 55%, go to restrain
Drying machine is dry, and dry plumule wind is sent to Oil press.
Step 10: fiber feedstuff is dry: the wet fiber of output in step 6, in step 1 under Vibration Screen produce go out it is broken
It is dry to enter pipe bundle drier after corn and corn pulp mixing, through wind model to packing shop.
Step 11: corn pulp is evaporated: by dilute corn pulp of the 6-10% containing solid content, by five half vapo(u)rization systems of effect, concentration
To 38-42% containing solid content, it is added in fiber and dries together.
Step 12: dry plumule arrives first oil expression workshop, embryo is ground brokenly through flaker, in order to make the thin of oil-containing
Cell wall and the nethike embrane for surrounding oil destroy, so that in oil expression, energy is preferably fuel-displaced, general 80% cell wall is broken more satisfactory.Mill
The plumule that plumule after broken is fried after making to grind in the steaming by frying pan is aqueous 2.5% ~ 3%, then enters pre-squeezer oil expression, obtains one
Part crude oil and the pre- squeezing dregs of rice, the pre- squeezing dregs of rice, which are sent to, leaches workshop, mixes in infuser with solvent (n-hexane), further extraction,
Miscella is obtained, miscella obtains water and solvent hexane mixture and crude oil by filtering, evaporation, and wherein crude oil is squeezed with pre-
Obtained crude oil mixing is sent to oil refining workshop together and carries out concise, and the pre- squeezing dregs of rice after leaching become commodity after dry through pervaporation
The plumule dregs of rice；Water and n-hexane solvent mixture enter system circulation processing.
1. corn purification and storage
Corn purification material-uploading style is storing corn library --- grain vehicle --- discharging double-edged fine-toothed comb --- bucket lifting in the prior art
Machine --- receiving sieve --- bucket elevator --- tower silo --- scraper plate --- corn scale；Due to dolantin Asia corn particle compared with
It is small, it is frangible after drying, so we are corn referred to above rolls, the link of freely falling body is transformed and innovates, in jade
Rubber push plate is mounted on forklift pushing shovel used before rice loading-unloading vehicle, reduces forklift and corn is pushed away before feeding double-edged fine-toothed comb
It being rolled caused by during dynamic, only this item, corn breakage is just down to 1% by original 3%, meanwhile, draw silo of the same trade
The advanced experience of application, to guiding device transformation is installed in silo additional, the movement of falling object is to bulkhead after reducing corn warehouse entry
It hits and generates broken.
Secondly by corn transmission process by traditional entrucking, unload, mechanical push to feeding double-edged fine-toothed comb is changed to pipe conveyer
Transportation system.Pipe conveyer transportation system is fed directly to feeding double-edged fine-toothed comb by pipe conveyer conveying from feeding melt pit, reduces
Corn is crushed caused by forklift push again.
2. preparing sulfurous acid
Sulfurous acid is produced using acid making system, provides matrix for corn soaking, starch and albumen in separating corn.SO2It absorbs
Tower absorption pattern is absorbed by original filler, nozzle type, is transformed in tower at present and is used 13 pieces of sieve plate, baffle plate 12
Block, height of weir plate 20mm, carry out counter-current absorption, and process water enters first block of column plate, technique water flow 25- by water-blocking net
30m3/h, process water and SO2Gas is that counter-current absorption mode increases process water and SO2The contact area of gas, time of contact from
And improve SO2The absorption efficiency of gas, while SO2One layer of liquid film is formed when gas passes through water prevents SO2Gas flow rate is too fast to be caused
SO2The loss of gas, all negative pressure values are higher than nozzle type in tower, and predominantly water resistance is high, reduces gas SO2Flow velocity causes.
Absorption tower negative pressure value maintains -10KPa hereinafter, preventing Concerning Flooding Phenomenon.
3. corn soaking
Common dent corn soluble sugar content is about 1.9%(butt), and solvable sugared content is about 2.2% in the corn of dolantin Asia
(butt) faces with new corn (moisture more high dissolubility sugar is higher) and for a long time and stores up corn highest (due to the enzymatic hydrolysis of corn ingredient
Effect, period of storage length can make starch degradation be converted into soluble saccharide to increase), if this part carbohydrate cannot be by having impregnated
It is precipitated or is digested entirely, then, it will result in the problems such as washing, separation into system, and be not digested carbohydrate
As old acid enters vapo(u)rization system, the Mei Lade nonenzymatic browning reaction of carbohydrate will occur, cause corn pulp color deep, influence to spray
Product colour after slurry.
There are three phases for corn soaking process: the first stage is the effect of lactic acid.In this stage new corn with containing height
The soaking water (old slurry) of concentration lactic acid contacts, at this time SO2Content and pH are lower, can inhibit the nocuousness of corn bring microorganism
Activity, while high concentration lactic acid acts on and forms pit-hole on corn embryosperm, soaking water easily penetrates inside niblet；Second stage
It is SO2Diffusion phase.Corn and the higher SO of concentration in this stage2With the lower lactic acid contact of concentration, SO2Upper one will be passed through
The pit-hole that stage is formed, diffuses to inside seed, plays its effect；Phase III is SO2Active phase.SO in this stage2Expand
It dissipates and enters inside niblet, protein degradation matter protein net discharges starch granules.The SO of high concentration2It can guarantee in its diffusion,
There are enough SO2It is present in soaking water.Lactic acid and solid content in this stage soaking water is all relatively low.
By corn soaking mechanism it will be seen that lactic acid can rapidly digest carbohydrate, but cannot be lactic acid band
Enter production system, then relieving haperacidity concentration is increased to 1300-1600ppm from original 1000-1200ppm by us, small using 30-36
When the method impregnated solved, soaking time is long, and lactic acid can consume the carbohydrate of precipitation, and improving relieving haperacidity concentration can efficiently press down
Lactic acid producing bacteria growth reduces lactic acid bacteria and cornstarch is saccharified and is consumed the rate of protein and effectively destroy in corn
Protein net creates conditions for starch, Protein Separation.
Because dolantin Asia corn particle is smaller and there are a certain amount of broken corns, in soaking process, immersion is increased
The resistance of water flow in tank；Blocking screen slot causes soak circulation difficult；Increase the solid concentration in soaking water, to evaporation and concentration
Difficulty etc. is brought, the measure taken is after steeping tank establishes buffer layer, and first upper part (50 tons or so) granularity is completely beautiful
Rice " rebasing " then puts into the slightly more corn of broken corn amount again, and buffer layer controls the steeping tank liquid level in 30-35%, due to dolantin
The broken corn amount of sub- corn is larger, influences to impregnate upper doses in feeding process, for guarantee the upper broken corn of the preferential feeding of doses compared with
Normal feeding after few 100-150 tons of corn, 400-420 tons of doses on every tank.It reduce the chocking-up degrees of screen slot, alleviate
The pressure of " leading slurry ", meanwhile, doses on single tank is reduced, the resistance of soak circulation in steeping tank is reduced, to improve immersion
Effect.
3. corn is crushed and germ separation
Corn crushing effect has following factor after influencing leaching: A. corn variety has much relations to crushing effect.Flour corn is easy
Broken, flint corn grain difficulty is broken.B. it is broken also to directly affect corn for immersion quality.Soaked corn is soft and easily broken, instead
Hardly possible it is broken.C. the corn after impregnating makes corn be hardened to become fragile if being rinsed with cold water, plumule cracky.D. it is crushed conveying water
It is very few to cause " to paste " mill easily blocking；How very few broken conveying is causes " slipping " to grind and will affect yield and effect.E. between double wedge mill
Gap is adjusted, and directly affects broken granularity.Be directed to the above influence factor, we by slubbing double wedge mill gap adjustment be 3-5/
It is no whole grain that two double wedges, which grind gap adjustment,.That is, slubbing double wedge mill gap is somewhat larger, two double wedges mill is smaller
It is some, while broken technique water yield is somewhat larger, reduces paste mill.In germ separation process, guaranteeing that cyclone group is normal
Except operating pressure and input concentration, we increase the spillway discharge of level-one germ separation top stream, and the big of plumule has been effectively ensured
Amount is extracted.Broken rear corn 3-5 of the regulating guarantee that slubbing is ground at present/two grind without obvious whole grain phenomenon, while before fine grinding
Half an hour has a whole kernel corn to occur when pressure curved sieve samples, and prevents corn broken excessively, amount of grease enters shadow in system
Ring the dehydrating effect of dehydration sieve and filter cloth.Plumule level-one cyclone, plumule second cyclone feed pressure guarantee in 0.6-
0.7MPA, the matching of open pipe number are plumule level-one cyclone open pipe 31, plumule second cyclone open pipe 17-19 root increase circulation
Amount, in 8-9 Baume, the control of plumule second cyclone in 9-10 Baume, input concentration, which improves, to be guaranteed for whole mill area concentration control
Plumule maximum is extracted, while plumule dewatering screen increases fiber and pipeline is added, and increases the fiber content in plumule, by residual fiber left
Grease be delivered to immersion oil workshop guarantee oil recovery rate.
4. byproduct is dry
Byproduct is saturate the reason is that because maize peel, joined sepia corn pulp in the plumule dregs of rice, to reduce product color difference,
Blender paddle is adjusted, adjustment spiral mixer, mixing screw conveyor auger leaf angle are changed to 9 degree from original 15 jiaos
Angle, simultaneously leading portion increase anti-leaf packing auger blade and guarantee that material mixing in blender is uniform, it is therefore an objective to adjust corn pulp and material
Incorporation time increases mixture homogeneity, keeps material presentation to raise state and not shears material state.To guarantee fiber and dregs of rice face
The uniformity of color is 8%-9% before the moisture tune of fiber level-one tube bank, improves the moisture of fiber level-one tube bank to 12%-14%；Simultaneously
It reduces fiber level-one and restrains steam pressure, fiber is made to be easier to mix with corn pulp.According to the top grade product class requirement of product, adjust
The additive amount of whole corn pulp, so that the control of fiber product protein content is in 18%-19%, the control of dregs of rice product protein content in 23%-
25%。
Compared with prior art, the invention has the benefit that
1. corn soaking effect and crushing effect improve situation:
Table 1: each Product Process adjustment front and back over dry yield and recovery rate change
As it can be seen from table 1 the over dry yield of starch, albumen, the dregs of rice, plumule all significantly improves after improving technique,
In addition produce load is increased to 107%-112% from 100%-102% after being transformed.Illustrate after improving dolantin Asia corn soaking effect
Produce load and yield get a promotion.Oil yield is promoted from 3.8% to 4.2% simultaneously, is promoted 0.4%, is illustrated that crushing effect is changed
It is kind, it avoids to later separation and dry influence.
2. fiber product and dregs of rice product colour improve situation:
Table 2: color perfecting situation before and after byproduct technique adjustment
The ratio of fiber and plumule dregs of rice grade before A and B is promoted to 85% by 50% respectively after table 2 can be seen that adjusting process,
35% percentage point is improved, greatly improves byproduct color after illustrating adjusting process.
3. dolantin Asia corn is frangible after drying, in transport, purge segment, a large amount of broken corns are generated.
After process improving, broken corn drops to 1% by 3%, and old acid dry tends towards stability, and greatly alleviates in evaporation process
The phenomenon that blocking evaporator tubulation.
For acid making system, SO2Entirety sulphur unit consumption is reduced to by original 1.3kg/ tons of starch after absorption tower mode is improved
0.8kg/ tons of starch, in the case where same sulphur unit consumption, 80-95 cubes of total flow of technique water flow, relieving haperacidity concentration is by original
1000-1100ppm is improved to 1500-1700ppm.The raising of relieving haperacidity concentration can satisfy the processing of whole dolantin Asia corn, add
Work grain matter is third, bulk density 650, and heat damaged kernel numerical value can also pass through relieving haperacidity when 10-15%, unsound grain numerical value are in 10-15%
The immersion effect reached is improved, while soaking time is reduced to 30-36 hours by original 40-48 hours, reduces equipment
It uses, to increase the maintenance rate of equipment, while the recovery rate for impregnating the promotion albumen of effect is improved by original 39-40.5%
To 42-43% or so, fat-extraction rate is improved by original 81-82% to 83-84.5%, to increase the output value of product, is reduced
Production cost.
Claims (10)
1. a kind of dolantin Asia raw material cornstarch processing technology, it is characterised in that: the following steps are included:
Step 1: corn storage and purification；
Step 2: preparing sulfurous acid；
Step 3: corn soaking；
Step 4: corn is broken；
Step 5: fine grinding；
Step 6: the separation and washing of fiber；
Step 7: starch separation and washing；
Step 8: Protein Separation and drying；
Step 9: germ washing and drying；
Step 10: fiber feedstuff is dry.
2. a kind of dolantin Asia raw material cornstarch processing technology according to claim 1, it is characterised in that: in step 1
In, raw material corn is entered into corn feeding system after weighing, screening, purification.
3. a kind of dolantin Asia raw material cornstarch processing technology according to claim 2, it is characterised in that: in step 2
In, sulfur dioxide gas is from bottom to top by being furnished with the absorption tower of multiple spray heads, process water counter current contacting with conveying, and described two
Sulfur oxide gas and the process water generate chemical reaction and form sulfurous acid, and the sulfurous acid concentration of preparation is 1300-1600ppm.
4. a kind of dolantin Asia raw material cornstarch processing technology according to claim 3, it is characterised in that: in step 3
In, sulfurous acid to corn carry out adverse current immersion, soaking temperature be 49 DEG C -51 DEG C, soaking time 30-36 hours, the leaching after immersion
Bubble liquid is dilute corn pulp, is sent to evaporization process and is concentrated to get the corn pulp that solid content is 38%-42%.
5. a kind of dolantin Asia raw material cornstarch processing technology according to claim 4, it is characterised in that: in step 4
In, the corn after immersion is broken into 4-6 valve through the worn-off of slubbing double wedge；Broken corn is sent to level-one germ cyclone, one
By countercurrent washing, dehydration and drying, dry plumule wind is sent to Oil press, level-one the plumule that grade germ cyclone top flow point separates out
The underflow materials that germ cyclone is isolated filter slurry by bent be sieved through, and oversize is ground into two double wedges, and corn is broken into
10-12 valve, the slurry by second-time breakage are sent to second level germ cyclone, the top stream material of second level germ cyclone and through slubbing
Double wedge galls the broken and bent slurry screened out and is mixed, and returns to the level-one germ cyclone, continues subsequent step, second level embryo
The underflow slurry of bud cyclone is sent into precision grinding process.
6. a kind of dolantin Asia raw material cornstarch processing technology according to claim 5, it is characterised in that: in step 5
In, the underflow slurry isolated through second level germ cyclone is by pressure curved sieve, and screenings is coarse starch milk, and oversize enters punching
It hits mill to be refined, the slurry after fine grinding enters fibre washing bath.
7. a kind of dolantin Asia raw material cornstarch processing technology according to claim 6, it is characterised in that: in step 6
In, slurry pumping after fine grinding to first order pressure curved sieve isolates coarse starch milk under sieve, and oversize sieves inverse through six stage pressure songs
Stream washing, washing process water are added before sieving from most rear class song and by compass screen surfaces, and the starch milk that carrying washing gets off is step by step to Forward
It is dynamic, until first order pressure curved sieve, fibre washing bath before sieving is flowed into, mixes with pressure curved sieve screenings before fine grinding, is pumped into jointly
First order pressure curved sieve, isolates coarse starch milk, and the coarse starch milk isolated enters starch, seitan separation process；Fibre on sieve
Dimension, skin slag and washing process water are gone against the stream, and are entered from the first order, are discharged from most rear class compass screen surface, are obtained moisture content after dehydration
For the wet fiber of 55%-65%, wet fiber enters the dry fibers that fiber drying process output moisture content is 9%-12%.
8. a kind of dolantin Asia raw material cornstarch processing technology according to claim 7, it is characterised in that: in step 7
In, by the coarse starch milk isolated pass through desanding swirler, rotary filter, pre-concentration seperator, into seitan, starch master from
Scheming centrifugation, the gluten water that top flow point separates out send concentration and separation machine, and underflow starch milk send ten second cyclones to carry out countercurrent washing
And be concentrated, smart starch milk is obtained, is dried.
9. a kind of dolantin Asia raw material cornstarch processing technology according to claim 8, it is characterised in that: in step 8
In, the gluten water in the step 7 enters seitan concentration centrifuge centrifugation through filter, and it is 0.20- that top stream, which is solid content,
0.50% process water, into technique water pot, preparation and plumule, skin slag, fiber wash for sulfurous acid, the bottom after concentration
It flows through dehydration and obtains the wet albumen that water content is 60-62%, then wet albumen is dried with pipe bundle drier, product wind-force
It is transported to packing shop packaging factory.
10. a kind of dolantin Asia raw material cornstarch processing technology according to claim 7, it is characterised in that: in step 10
In: by step 6 wet fiber, enter in step 1 after screening the corn pulp in obtained broken corn and step 3 and mixing
Pipe bundle drier is dried to obtain fiber feedstuff, through wind model to packing shop.
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| CN111303304A (en) * | 2020-04-16 | 2020-06-19 | 黑龙江昊天玉米开发有限公司 | Preparation method of corn starch |
| CN113105565A (en) * | 2021-04-12 | 2021-07-13 | 梁山菱花生物科技有限公司 | Preparation method of starch milk for saccharification |
| CN113278664A (en) * | 2021-05-17 | 2021-08-20 | 齐齐哈尔龙江阜丰生物科技有限公司 | Process for degrading corn epidermal fibers by cellulase |
| CN113621083A (en) * | 2020-05-08 | 2021-11-09 | 中粮生化能源（衡水）有限公司 | Corn starch wet milling processing technology and primary concentration technology |
| CN114058669A (en) * | 2020-08-04 | 2022-02-18 | 山东福洋生物科技股份有限公司 | Method for evaluating corn soaking effect |
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