CN106720286A - A kind of mould proof dry method of the systematicness of high moisture grain three - Google Patents
A kind of mould proof dry method of the systematicness of high moisture grain three Download PDFInfo
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- CN106720286A CN106720286A CN201611080236.6A CN201611080236A CN106720286A CN 106720286 A CN106720286 A CN 106720286A CN 201611080236 A CN201611080236 A CN 201611080236A CN 106720286 A CN106720286 A CN 106720286A
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- grain
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- A—HUMAN NECESSITIES
- A23—FOODS OR FOODSTUFFS; TREATMENT THEREOF, NOT COVERED BY OTHER CLASSES
- A23B—PRESERVING, e.g. BY CANNING, MEAT, FISH, EGGS, FRUIT, VEGETABLES, EDIBLE SEEDS; CHEMICAL RIPENING OF FRUIT OR VEGETABLES; THE PRESERVED, RIPENED, OR CANNED PRODUCTS
- A23B9/00—Preservation of edible seeds, e.g. cereals
- A23B9/08—Drying; Subsequent reconstitution
Abstract
The invention discloses a kind of mould proof dry method of systematicness of high moisture grain three：The new high moisture grain for harvesting enters before storehouse and is gone out mould drying, tempering through just clear, frequency microwave infrared three, its moisture is down to 13.5 ~ 14%, sends into warehouse storage.The present invention substantially radio frequency, microwave, infrared three dry mould method of going out, on the premise of grain drying quality and drying effect is ensured, by radio frequency, microwave and infra-red drying, suppress the growth of grain mycotic spore, strengthen the precipitation speed and homogeneity of grain drier, improve grain storage enterprise and store up efficiency, save drying time, energy consumption for drying is reduced, the grain heap heat when grain concentrates the harvest season caused by high-moisture is reduced and is gone mouldy, improve stored grain storage quality and security.
Description
Technical field
The technical field with logistics security is stored up the invention belongs to grain, and in particular to a kind of high moisture grain systematicness is anti-
Mould dry method.
Background technology
High moisture grain refers to grain of the actual storage moisture higher than the safe storage moisture standards of national regulation, usual water
Content is divided to be more than 20%.Fungus growth usual earlier in grain occurs in a certain region of grain heap, mainly in grain heap core heat production
Area, then constantly extends to surrounding, causes grain apparent quality, edible quality and processing quality deterioration etc..And main producing region grain
Directly transported without precipitation after results to the phenomenon generally existing of key distribution area, because the north and south temperature difference is larger, road farther out, high-moisture
Easily there is the initial fever phenomenon that mildews during foodstuff transportation, and then drastically deterioration, mycotoxin levels increase to cause quality
Quality safety risk.In grain harvest season, particularly meet large grain such as continuous rainy weather, paddy, corn, wheat and receive
Water content is extremely high when obtaining, and the quality of grain is easy to deterioration, it is necessary to drying, and the effect of existing grain drier in time
Mode is single（Simple heated-air drying）, action effect it is poor；In addition synoptic climate condition is poorer, and the water content of grain is higher,
Need the amplitude of precipitation bigger, working time of the grain in drying machine is also more long, and efficiency is also lower.Sometimes need to repeat to dry number
Secondary, the demand to manpower and materials is all higher, and energy consumption for drying is very high, long action time, in the urgent need to existing grain machine
Tool carries out transformation and upgrade.The grain yield of China is huge, and grain harvest is seasonal strong, if grain moisture content is high, water activity
Also it is high, add grain and produce heap heat, easily cause the amount reproduction in microorganism therein, most cause grain to go mouldy and product at last
Matter deteriorates, and loses edibility, causes the phenomenon of " high yield is not had a good harvest ".
Therefore, appropriate precipitation treatment must be carried out to grain before grain enters storehouse, is easily produced otherwise in grain depot local
Heap heat.The Aspergillus flavus that can be especially grown in grain, can also be metabolized generation aspergillus flavus poison after certain hour is grown
Strong toxicity, carcinogenic, teratogenesis the metabolite such as element, can cause serious harm to the health of humans and animals.Traditional grain enters
Storehouse drying means mainly has artificial airing solarization method, dryer facture and drying generator facture and point journey（Stage）Dry
Method.Artificial airing solarization method human cost is too high, and dryer facture and drying generator facture and point journey（Stage）It is dry
All there are key restraining factors in the several methods such as dry method：One is that traditional grain is dried by high temperature and air blast reduction moisture, but
Lower the temperature again after high temperature action treatment, frequently result in a large amount of generations of typical case's grain " quick-fried waist " situation such as paddy, cause broken rice rate big
Width increases.The mutation of temperature is the main cause of " quick-fried waist ".The improperly mode such as too fast precipitation, can all cause during high warm drying
Starch in the grain of rice drastically expands, and will crack the grain of rice, is formed " quick-fried waist ".Two is the efficiency of heated-air drying, and energy consumption is special
It is not big；Three is that traditional grain dries that continuous operations efficiency is low, speed is slow.
The content of the invention
Combine mould proof dry method, the party with infrared it is an object of the invention to provide a kind of high-moisture grain radio frequency, microwave
Method is penetrated into inside grain materials using the high-frequency ac electromagnetic wave of radio frequency, microwave and infrared excitation, causes material internally charged
The vibration migration of ion, converts electrical energy into heat energy, carries out grain materials internally dry；Additionally, radio frequency, microwave and infrared and life
After the interphase interaction of the elementary cell cell of object and its composition, the cellular physiological events change and reaction of organism are produced
Antibacterial and mildew-proof function.
The purpose of the present invention is realized by following technical proposals：
The mould proof dry method of the systematicness of a kind of high moisture grain three, it is characterised in that the concrete measure of the method is as follows：
1）High moisture grain just remove before storehouse is entered and lives together reason；
2）Radio frequency-microwave-infrared three dried process is carried out to the grain after just clear treatment, using radio frequency, microwave and infrared is swashed
The high-frequency ac electromagnetic wave of hair, is penetrated into inside grain materials, causes the vibration of the internally charged ion of material to migrate, and electric energy is turned
Heat energy is turned to, grain materials is carried out internally dry；Meanwhile, using radio frequency, microwave and it is infrared with organism and its composition it is basic
The interphase interaction of unit cell, suppresses the cellular physiological events change of mycotic spore organism and reacts.
First have to carry out to be that radio-frequency seasoning is gone out mould, radio-frequency technique Main Function object is life of the moisture content more than 20%
Body or material（Used in Rainy Seasons of Southern Cities newly harvests paddy moisture up to more than 22%, and new harvesting corn moisture is even as high as 40%）, make life
Internal portion's short time produces instantaneous high heat, moisture to be quickly lost in, and rises and kills mycotic spore and dry the dual of Paddy With High Moisture Content Stored
Effect, in superelevation moisture grain of the moisture more than 20% Free water in the presence of high-power RF, rapid precipitation, mould
Spore is inactivated；Measurement for Grain Moisture Content from>20% is down to 17% or so, and grain materials surface samming is no more than 33 ± 1 DEG C.
Microwave technology mainly acts on the material of moisture 15-20%, by the processing mode of microwave after first radio frequency, enters
The targetedly precipitation treatment of one step, greatly improves drying efficiency, and now Measurement for Grain Moisture Content is down to 15 ± 1% or so from 17 ~ 18%,
And grain materials samming is no more than 35 ± 1 DEG C.But if continuation processed in the way of microwave drying, dry efficiency can under
Drop, energy consumption can rise, therefore carry out infra-red drying and go out mould；Measurement for Grain Moisture Content is down to 14 ± 1% or so from 15 ~ 16%, and grain
Material samming is no more than 37 ± 1 DEG C.
3）After the continuous treatment of grain three, tempering treatment is carried out, moisture is down to 13.5 ~ 14% or so, and grain thing
Material samming is no more than 28 ± 1 DEG C, then the grain after treatment is sent into warehouse storage by crawler belt.
The present invention is applied to the grains such as paddy, corn, wheat and enters storehouse pre-treatment, and in dried process, the temperature of corn is small
In 37 DEG C, the ratio between drying time and tempering time are 1：3~6；The temperature of paddy is less than 37 DEG C, drying time and tempering time it
Than being 1：4~6；The temperature of wheat is less than 37 DEG C, and the ratio between drying time and tempering time are 1：4~8.
In the present invention, it is contemplated that the need for high water content grain moisture existence, moisture reduce characteristic and dries step by step, penetrate
Frequently, microwave, infrared equipment arranged in sequence, must not exchange order, and radio frequency, microwave, infrared equipment power output progressively reduce, and protect
The processing quality of grain after card is dry, the working time is the continuous operations of 30 ~ 300 seconds.
In the present invention, radio system is arranged on grain depot lifting conveyer belt original feedstock end, and radio system is parallel plate electrode formula
RF heating system, is the plane-parallel capacitor being made up of upper and lower two-plate, between heated grain is placed in two-plate, alternation electricity
Magnetic field acts on grain by pole plate, and RF energy acts on grain materials along vertical plate direction.During radio-frequency seasoning treatment, penetrate
Frequency equipment power output is 4.8 ~ 40kW, and frequency is 13.56MHz or 27.12MHz or 40.68MHz.It is micro- during microwave drying treatment
The power output of wave device is 3 ~ 36kW, and frequency is 915MHz.During infra-red drying treatment, infrared equipment plug and play, infrared lamp
It is eight groups to manage, 2.7 ~ 24kW of gross output, and at 3 ~ 8 μm, infrared tube energy loses wavelength close to zero.
The substantive difference of the present invention of table 1 and traditional heated air drying method
The present invention controls the elementary cell cell of life entity and its composition using comparatively safe knockdown electromagnetic radiation technology
Between interaction, suppress mycotic spore organism cellular physiological events change and react.By mass data and on the spot
Experiment and follow-up storage experiment, propose microwave after first radio frequency, then infrared drying is gone out mould treatment, not only ensures dry homogeneous
Property, more ensure that the quality of cereal product.
First, the aerial penetration depth of radio-frequency technique in the present invention in three dry technologies is infinitely great, therefore
Can easily penetrate and quick heated porous material, radio-frequency technique is applied to traditional heating mode using the characteristic and is difficult to process
Grain, and the drying process of grain is applied to moisture content self-balancing effect specific to radio-frequency technique, be greatly improved dry
The water ratio uniformity of dry rear grain, so as to improve the quality of stored grain.
2nd, compared with traditional drying mode, three are coupled conjunction dry technology has significant odds for effectiveness.In drying process,
Grain materials are inside and outside while being heated, moisture is by interior shifting to surface evaporation, therefore surface temperature is less than central temperature, is beneficial to
Improve rate of drying.And during traditional drying, grain surface temperature is higher than internal temperature, heat conducts from outside to inside, except
Heat transfer is time-consuming outer, because heat is in opposite direction with what moisture was transmitted, hinders the speed of moisture transmission.
3rd, the electromagnetic field produced using three dry technologies, biosystem is under certain conditions to the response of electromagnetic field
The normal physiological activity state of mould is disturbed, the potential balance inside and outside destruction biological cell film, blocking cell membrane is handed over extraneous
The smoothness of the ion channel of material is changed, mycotic spore is damaged, the part that can be killed in grain while drying is mould
Bacterium and insect pest.
Specific embodiment
The present invention is described in further detail with reference to embodiments.
Embodiment 1
Corn does not carry out precipitation treatment after at source harvesting, and fast tester for water content measures moisture up to 29%, by vehicle
（Ship）Transport for long-distance to storehouse is stored up, already close to critical value, simple drying cannot be eliminated for total plate count and fungi count in corn
Mould, influences grain quality and granary storage performance.Three dryings are carried out before corn enters storehouse, radio-frequency apparatus power output is
28kW, frequency is 27.12MHz；Microwave equipment power output 12kW, frequency is 915MHz；Infrared equipment power output is 7kW,
Wavelength is at 3.8 μm.Up to 38 DEG C, total number of molds reduces an order of magnitude to corn material surface temperature.After three dry, tempering is carried out
Treatment, corn temperature is down to 25 DEG C or so, and water content carries out conventional storage by being down to 13.5%.
Embodiment 2
It is that raw grain is paddy with the difference of embodiment 1（Japonica rice）, moisture is 20.5% when the place of production harvests, conventional fortune long-distance transprovincially
Defeated 3 days, due to meeting with heavy rain in transit, humidity was higher, to specify store up storehouse when Measurement for Grain Moisture Content be about 21%.In paddy
Enter first three connection drying of storehouse.Radio-frequency apparatus power output is 15kW, and frequency is 27.12MHz；Microwave equipment power output is 8kW, frequency
Rate is 915MHz；Infrared equipment power output is 5kW, and wavelength is at 2.5 μm.Up to 37 DEG C, total number of molds reduces by 90% to japonica rice temperature,
Water content is down to 14%, and temperature is down to normal temperature after tempering, you can carry out conventional storage.
Embodiment 3
It is that corn enters moisture 19.5% before storehouse with the difference of embodiment 1, corn carries out three dryings before entering storehouse, and radio frequency sets
Standby power output is 10kW, and frequency is 27.12MHz；Microwave equipment power output 6kW, frequency is 915MHz；Infrared equipment is exported
Power is 4kW, and wavelength is at 3 μm.Up to 38 DEG C, total number of molds reduces an order of magnitude to corn material surface temperature.After three dry,
Tempering treatment is carried out, corn temperature is down to 25 DEG C or so, and water content carries out conventional storage by being down to 13.5%.
Claims (6)
1. the mould proof dry method of the systematicness of a kind of high moisture grain three, it is characterised in that concrete measure is as follows：
1）High moisture grain is carried out just to remove and lives together reason, then carry out the mould drying of three joint defence；
2）Carry out radio-frequency seasoning first to the grain after just clear treatment to go out mould treatment, using the high-frequency ac electromagnetism of radio-frequency drive
Ripple, is penetrated into inside grain materials, carries out the internally dry precipitation of grain materials；Killed using the local heat energy of radio-frequency drive initial
Mould；Measurement for Grain Moisture Content from>20% is down to 17% or so, and grain materials surface samming is no more than 33 ± 1 DEG C；
3）Grain carries out microwave drying treatment without tempering, and Measurement for Grain Moisture Content is down to 15 ± 1% or so from 17 ~ 18%, and grain
Material samming is no more than 35 ± 1 DEG C；
4）Grain is without tempering, then carries out infra-red drying treatment, and Measurement for Grain Moisture Content is down to 14 ± 1% or so from 15 ~ 16%, and grain
Food material samming is no more than 37 ± 1 DEG C；
5）After infrared treatment, it is aided with tempering program, Measurement for Grain Moisture Content is down to 13.5 ~ 14% or so, and grain materials samming does not surpass
28 ± 1 DEG C are crossed, the grain after tempering is processed enters warehouse storage by crawler-tread.
2. the mould proof dry method of the systematicness of high moisture grain according to claim 1 three, it is characterised in that：The grain
Food includes corn, paddy, wheat.
3. the mould proof dry method of the systematicness of high moisture grain according to claim 1 three, it is characterised in that：It is described to penetrate
Frequently, microwave, the power output of infrared equipment progressively reduce, and the working time is the continuous operations of 30 ~ 300 seconds.
4. the mould proof dry method of the systematicness of high moisture grain according to claim 3 three, it is characterised in that：Radio frequency system
System is arranged on grain depot lifting conveyer belt original feedstock end, and radio system is parallel plate electrode formula RF heating system, is by upper and lower two
The plane-parallel capacitor that pole plate is constituted, between heated grain is placed in two-plate, alternating electromagnetic field acts on grain by pole plate, penetrates
Frequency energy acts on grain materials along vertical plate direction；Radio-frequency seasoning treatment when, radio-frequency apparatus power output be 4.8kW ~
40kW, frequency is 13.56MHz or 27.12MHz or 40.68MHz.
5. the mould proof dry method of the systematicness of high moisture grain according to claim 4 three, it is characterised in that：Microwave is done
During dry treatment, the power output of microwave equipment is 3 ~ 36kW, and frequency is 915MHz.
6. the mould proof dry method of the systematicness of high moisture grain according to claim 5 three, it is characterised in that：It is infrared dry
During dry treatment, infrared equipment plug and play, infrared lamp is eight groups, and 2.7 ~ 24kW of gross output, wavelength is infrared at 3 ~ 8 μm
Pipe energy loses close to zero.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201611080236.6A CN106720286A (en) | 2016-11-30 | 2016-11-30 | A kind of mould proof dry method of the systematicness of high moisture grain three |
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| CN201611080236.6A CN106720286A (en) | 2016-11-30 | 2016-11-30 | A kind of mould proof dry method of the systematicness of high moisture grain three |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108041418A (en) * | 2017-12-08 | 2018-05-18 | 上海热丽科技集团有限公司 | A kind of method based on planar far-infrared technique selectively killing aspergillus spore |
| CN109907032A (en) * | 2019-04-19 | 2019-06-21 | 河南省粮食局浚县直属粮库 | A kind of peasant household's grain flash baking and insecticidal system |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN102986838A (en) * | 2012-12-13 | 2013-03-27 | 江南大学 | Intermediate wave infrared and radio frequency combined drying method suitable for dehydration of large-scale seasoning edible mushrooms |
| CN103968646A (en) * | 2014-05-20 | 2014-08-06 | 南京财经大学 | Radio frequency and microwave drying method for preventing ultrahigh moisture grain from mildewing |
| CN105928323A (en) * | 2016-04-28 | 2016-09-07 | 华中农业大学 | Grain microwave and fluidization combined drying equipment, drying method and application |
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2016
- 2016-11-30 CN CN201611080236.6A patent/CN106720286A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102986838A (en) * | 2012-12-13 | 2013-03-27 | 江南大学 | Intermediate wave infrared and radio frequency combined drying method suitable for dehydration of large-scale seasoning edible mushrooms |
| CN103968646A (en) * | 2014-05-20 | 2014-08-06 | 南京财经大学 | Radio frequency and microwave drying method for preventing ultrahigh moisture grain from mildewing |
| CN105928323A (en) * | 2016-04-28 | 2016-09-07 | 华中农业大学 | Grain microwave and fluidization combined drying equipment, drying method and application |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108041418A (en) * | 2017-12-08 | 2018-05-18 | 上海热丽科技集团有限公司 | A kind of method based on planar far-infrared technique selectively killing aspergillus spore |
| CN109907032A (en) * | 2019-04-19 | 2019-06-21 | 河南省粮食局浚县直属粮库 | A kind of peasant household's grain flash baking and insecticidal system |
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Application publication date: 20170531 |