CN104672335A - Wet grinding technology in production process of corn starch - Google Patents
Wet grinding technology in production process of corn starch Download PDFInfo
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- CN104672335A CN104672335A CN201510101808.3A CN201510101808A CN104672335A CN 104672335 A CN104672335 A CN 104672335A CN 201510101808 A CN201510101808 A CN 201510101808A CN 104672335 A CN104672335 A CN 104672335A
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Abstract
The invention discloses a wet grinding technology in the production process of corn starch. Wet grinding of corn is performed in two steps and three stages, corm germs are broken and separated through two stages of coarse grinding, and then fine grinding is performed. With the adoption of the wet grinding technology, the wholeness of the germs can be maintained to the largest extent, the germs can be effectively separated, starch dissociation is relatively complete, and resource waste is avoided.
Description
Technical field
The present invention relates to starch producing technology technical field, particularly relate to the wet-grinding technology and relative device in a kind of production of corn starch process.
Background technology
The technological process of production of W-Gum comprises multiple steps such as immersion, fragmentation, separation, bake drying, packaging.
Soaking, is the contact in order to destroy or weaken each integral part of corn grain, the protein net in dispersion albuminous cell, makes starch and non-starch part separately; Flood the soluble substance in corn grain; Suppress harmful activity of microorganism in corn, prevent material in production process corrupt; Corn is softened, reduces the physical strength of corn grain, be convenient to the operation of rear operation.
Corn grain softens after sulfurous acid soaks, and each integral part is all loose.In order to make each integral part separately, dissociate plumule, needs to carry out fragmentation.Maize germ high resilience after dipping, fragmentation has following object: plumule one, can be made to dissociate and be unlikely to again to smash plumule, two, isolate in the broken corn block of maize germ, the seed coat of maize kernel and stratum corneum is needed to be separated with endosperm, three, starch is separated with the thorough of non-starch part, and starch granules and protein particulate become unbound state.
In prior art, usually through one or more common grindings, final effect does not reach above broken requirement, or overgrinding, is smashed by plumule, or can not discharge complete for starch granules, causes the wasting of resources.
Summary of the invention
Object of the present invention is exactly defect for above-mentioned existence and provides the wet-grinding technology and relative device in a kind of production of corn starch process.Wet-grinding technology and relative device of the present invention, can farthest keep plumule complete, be effectively separated by plumule, and starch is free relatively more thorough, avoids causing the wasting of resources.
The present invention relates to percentage composition, be all mass percentage, below repeat no more.
Wet-grinding technology and relative device technical scheme in a kind of production of corn starch process of the present invention is, corn wet milling in two steps three grades carry out;
The first step is corase grind, and corase grind is divided into two-stage broken, is separated by maize germ after corn corase grind;
Second step is that the broken corn block isolating plumule is carried out fine grinding, in fine grinding process, starch is through 5 screenings of bent sieve, screen is carried out by after sieve according to particle difference, sieve is lower is starch milk, starch milk enters subsequent processing and carries out being separated of starch and seitan, screen overflow is then fiber pulp, also containing a small amount of starch and seitan in fiber pulp, more repeatedly washs; Broken corn is after fine grinding, and the fibrous substance such as seed coat and radicle and endosperm are peeled off, thus isolate fiber; Protein net simultaneously in endosperm is destroyed, and starch is free out.
The first step roughly grind into mill corn moisture mass percentage be 42-45%.
The first step corase grind starts, and the mass ratio entering abrasive material and water is: 1:1.3-1.9.
The first step corase grind is specially:
One-level particle size after cracking 5-8 lobe, whole grain rate <1%, concentration 6.0-7.5Be, free plumule >=85%, release starch 25-30%;
Two-stage crushing granularity 10-12 lobe, not containing whole kernel corn, concentration 7-9Be, free plumule >=98%, release starch 30-35%.
Corase grind terminates rear employing germ cyclone and carries out maize germ separation, swirler feed pressure: 0.4-0.5MPa; Carry embryo rate >=98%.
Cornmeal mush water content is obtained between 70-75% after corase grind terminates.When moisture is added too little, can cause sticky mill, producing fragmentation affects germ separation and yield, and moisture is too many, and can cause stream mill, cause the drawbacks such as plumule is starch-containing, ixoderm, make subsequent handling concentration low, plumule can not well be separated, and power consumption increases, output reduction.
The screen underflow concentration 5-7Be of bent sieve, feed pressure 0.3-0.5MPa before fine grinding; After fine grinding, the ratio >=2.5:1 of material thickness slag, connects amount of starch≤15% in fibrous residue.
In fine grinding process, a sieve screen underflow concentration 3-5Be; Two sieve screen underflow concentration 4.5Be; Three sieve screen underflow concentration 3Be; Four sieve screen underflow concentration 1Be; End sieve screen underflow is starch-containing hardly; Fiber is starch-containing≤and 18.0%.
Beneficial effect of the present invention is: maize germ, through corase grind, is separated by wet corn.For ensure plumule complete be separated thoroughly, corase grind point twice are carried out, and per pass all carries out germ separation, and this is also main purpose-separated plumule that corn is roughly ground.The broken corn block isolating plumule is carried out fine grinding.Broken corn is after fine grinding, and the fibrous substance such as seed coat and radicle and endosperm are peeled off, thus isolate fiber; Protein net simultaneously in endosperm is destroyed, and is dissociated out by most starch wherein.
Wet-grinding technology and relative device of the present invention, can farthest keep plumule complete, be effectively separated by plumule, and starch is free relatively more thorough, avoids causing the wasting of resources.
embodiment:
In order to understand the present invention better, describe technical scheme of the present invention in detail with specific examples below, but the present invention is not limited thereto.
Embodiment 1
Wet-grinding technology and relative device in a kind of production of corn starch process of the present invention, corn wet milling in two steps three grades carry out;
The first step is corase grind, and corase grind is divided into two-stage broken, is separated by maize germ after corn corase grind;
The first step roughly grind into mill corn moisture mass percentage be 43%.
The first step corase grind starts, and the mass ratio entering abrasive material and water is: 1:1.6.
The first step corase grind is specially:
One-level particle size after cracking 5-8 lobe, whole grain rate <1%, concentration 6.0-7.5Be, free plumule >=85%, release starch 25-30%;
Two-stage crushing granularity 10-12 lobe, not containing whole kernel corn, concentration 7-9Be, free plumule >=98%, release starch 30-35%.
Corase grind terminates rear employing germ cyclone and carries out maize germ separation, swirler feed pressure: 0.4-0.5MPa; Carry embryo rate >=98%.
Cornmeal mush water content is obtained 73% after corase grind terminates.When moisture is added too little, can cause sticky mill, producing fragmentation affects germ separation and yield, and moisture is too many, and can cause stream mill, cause the drawbacks such as plumule is starch-containing, ixoderm, make subsequent handling concentration low, plumule can not well be separated, and power consumption increases, output reduction.
Second step is that the broken corn block isolating plumule is carried out fine grinding, in fine grinding process, starch is through 5 screenings of bent sieve, screen is carried out by after sieve according to particle difference, sieve is lower is starch milk, starch milk enters subsequent processing and carries out being separated of starch and seitan, screen overflow is then fiber pulp, also containing a small amount of starch and seitan in fiber pulp, more repeatedly washs; Broken corn is after fine grinding, and the fibrous substance such as seed coat and radicle and endosperm are peeled off, thus isolate fiber; Protein net simultaneously in endosperm is destroyed, and starch is free out.
The screen underflow concentration 5-7Be of bent sieve, feed pressure 0.3-0.5MPa before fine grinding; After fine grinding, the ratio >=2.5:1 of material thickness slag, connects amount of starch≤13% in fibrous residue.
In fine grinding process, a sieve screen underflow concentration 3-5Be; Two sieve screen underflow concentration 4.5Be; Three sieve screen underflow concentration 3Be; Four sieve screen underflow concentration 1Be; End sieve screen underflow is starch-containing hardly; Fiber is starch-containing≤and 15.0%.
Embodiment 2
Wet-grinding technology and relative device in a kind of production of corn starch process of the present invention, corn wet milling in two steps three grades carry out;
The first step is corase grind, and corase grind is divided into two-stage broken, is separated by maize germ after corn corase grind;
The first step roughly grind into mill corn moisture mass percentage be 45%.
The first step corase grind starts, and the mass ratio entering abrasive material and water is: 1:1.3.
The first step corase grind is specially:
One-level particle size after cracking 5-8 lobe, whole grain rate <1%, concentration 6.0-7.5Be, free plumule >=85%, release starch 25-30%;
Two-stage crushing granularity 10-12 lobe, not containing whole kernel corn, concentration 7-9Be, free plumule >=98%, release starch 30-35%.
Corase grind terminates rear employing germ cyclone and carries out maize germ separation, swirler feed pressure: 0.4-0.5MPa; Carry embryo rate >=98%.
Cornmeal mush water content is obtained 75% after corase grind terminates.When moisture is added too little, can cause sticky mill, producing fragmentation affects germ separation and yield, and moisture is too many, and can cause stream mill, cause the drawbacks such as plumule is starch-containing, ixoderm, make subsequent handling concentration low, plumule can not well be separated, and power consumption increases, output reduction.
Second step is that the broken corn block isolating plumule is carried out fine grinding, in fine grinding process, starch is through 5 screenings of bent sieve, screen is carried out by after sieve according to particle difference, sieve is lower is starch milk, starch milk enters subsequent processing and carries out being separated of starch and seitan, screen overflow is then fiber pulp, also containing a small amount of starch and seitan in fiber pulp, more repeatedly washs; Broken corn is after fine grinding, and the fibrous substance such as seed coat and radicle and endosperm are peeled off, thus isolate fiber; Protein net simultaneously in endosperm is destroyed, and starch is free out.
The screen underflow concentration 5-7Be of bent sieve, feed pressure 0.3-0.5MPa before fine grinding; After fine grinding, the ratio >=2.5:1 of material thickness slag, connects amount of starch≤15% in fibrous residue.
In fine grinding process, a sieve screen underflow concentration 3-5Be; Two sieve screen underflow concentration 4.5Be; Three sieve screen underflow concentration 3Be; Four sieve screen underflow concentration 1Be; End sieve screen underflow is starch-containing hardly; Fiber is starch-containing≤and 18.0%.
Claims (8)
1. the wet-grinding technology and relative device in production of corn starch process, is characterized in that, corn wet milling in two steps three grades carry out;
The first step is corase grind, and corase grind is divided into two-stage broken, is separated by maize germ after corn corase grind;
Second step is that the broken corn block isolating plumule is carried out fine grinding, in fine grinding process, starch is through 5 screenings of bent sieve, screen is carried out by after sieve according to particle difference, sieve is lower is starch milk, starch milk enters subsequent processing and carries out being separated of starch and seitan, screen overflow is then fiber pulp, also containing a small amount of starch and seitan in fiber pulp, more repeatedly washs; Broken corn is after fine grinding, and the fibrous substance such as seed coat and radicle and endosperm are peeled off, thus isolate fiber; Protein net simultaneously in endosperm is destroyed, and starch is free out.
2. the wet-grinding technology and relative device in a kind of production of corn starch process according to claim 1, is characterized in that, the first step roughly grind into mill corn moisture mass percentage be 42-45%.
3. the wet-grinding technology and relative device in a kind of production of corn starch process according to claim 1, is characterized in that, the first step corase grind starts, and the mass ratio entering abrasive material and water is: 1:1.3-1.9.
4. the wet-grinding technology and relative device in a kind of production of corn starch process according to claim 1, is characterized in that, the first step corase grind is specially:
One-level particle size after cracking 5-8 lobe, whole grain rate <1%, concentration 6.0-7.5Be, free plumule >=85%, release starch 25-30%;
Two-stage crushing granularity 10-12 lobe, not containing whole kernel corn, concentration 7-9Be, free plumule >=98%, release starch 30-35%.
5. the wet-grinding technology and relative device in a kind of production of corn starch process according to claim 1, is characterized in that, obtains cornmeal mush water content at 70-75% after corase grind terminates.
6. the wet-grinding technology and relative device in a kind of production of corn starch process according to claim 1, is characterized in that, corase grind terminates rear employing germ cyclone and carries out maize germ separation, swirler feed pressure: 0.4-0.5MPa; Carry embryo rate >=98%.
7. the wet-grinding technology and relative device in a kind of production of corn starch process according to claim 1, is characterized in that, the screen underflow concentration 5-7Be of bent sieve, feed pressure 0.3-0.5MPa before fine grinding; After fine grinding, the ratio >=2.5:1 of material thickness slag, connects amount of starch≤15% in fibrous residue.
8. the wet-grinding technology and relative device in a kind of production of corn starch process according to claim 1, is characterized in that, in fine grinding process, and a sieve screen underflow concentration 3-5Be; Two sieve screen underflow concentration 4.5Be; Three sieve screen underflow concentration 3Be; Four sieve screen underflow concentration 1Be; End sieve screen underflow is starch-containing hardly; Screen overflow is starch-containing≤and 18.0%.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201510101808.3A CN104672335A (en) | 2015-03-09 | 2015-03-09 | Wet grinding technology in production process of corn starch |
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| CN201510101808.3A CN104672335A (en) | 2015-03-09 | 2015-03-09 | Wet grinding technology in production process of corn starch |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109793193A (en) * | 2018-07-25 | 2019-05-24 | 上海药辰生物科技有限公司 | A kind of method ginkgo nut removing plumule and separate mesosperm and endotesta |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4207118A (en) * | 1978-12-18 | 1980-06-10 | Dorr-Oliver Incorporated | Corn wet milling system and process for manufacturing starch |
| CN1065463A (en) * | 1991-03-29 | 1992-10-21 | 多尔奥利弗股份有限公司 | Produce the corn wet milling process of starch |
| CN101227834A (en) * | 2005-07-20 | 2008-07-23 | 泰特&莱尔组分美国公司 | Corn wet milling process |
| CN101412760A (en) * | 2008-11-25 | 2009-04-22 | 西王集团有限公司 | Method for separating fiber in corn starch processing procedure |
| CN101665541A (en) * | 2008-09-05 | 2010-03-10 | 甘肃雪晶生化有限责任公司 | Method for producing waxy corn starch |
-
2015
- 2015-03-09 CN CN201510101808.3A patent/CN104672335A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4207118A (en) * | 1978-12-18 | 1980-06-10 | Dorr-Oliver Incorporated | Corn wet milling system and process for manufacturing starch |
| CN1065463A (en) * | 1991-03-29 | 1992-10-21 | 多尔奥利弗股份有限公司 | Produce the corn wet milling process of starch |
| CN101227834A (en) * | 2005-07-20 | 2008-07-23 | 泰特&莱尔组分美国公司 | Corn wet milling process |
| CN101665541A (en) * | 2008-09-05 | 2010-03-10 | 甘肃雪晶生化有限责任公司 | Method for producing waxy corn starch |
| CN101412760A (en) * | 2008-11-25 | 2009-04-22 | 西王集团有限公司 | Method for separating fiber in corn starch processing procedure |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109793193A (en) * | 2018-07-25 | 2019-05-24 | 上海药辰生物科技有限公司 | A kind of method ginkgo nut removing plumule and separate mesosperm and endotesta |
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Application publication date: 20150603 |