SU1601479A1 - Method of drying grain in grouped bins - Google Patents

Abstract

The invention relates to the technique of drying grain and oilseed n. The aim of the invention is to improve the quality of drying and efficiency of the process. The method consists in mixing the initial and dried grain, depletion, drying, drying and cooling with atmospheric air. In the proposed method of drying, the first drying is carried out in the moving layer of the bunker dryer 11 at a constant, independent of moisture, grain consumption, the second drying is carried out in two parallel streams - in the second additional bunker dryer 13 with adjustable grain consumption and in the bins 4 of the first group unit subsequent bleeding, after which the grain is sent to mix with the original. After drying in the second additional bunker dryer 13 and binning for 3-6 hours, the grain is dried and then cooled with atmospheric air. 1 il.

Description

the right one according to the scheme) with a flow rate of 30 t / h is sent to the noria 10 shoe, in which it is mixed, and with a total flow rate of 39 t / h, the grain mixture enters the first additional bunker dryer 11. In connection with the fact that adjusted to 35 t / h, the level in the drying bin will increase. The upper level 15 sensor will switch the flow to recirculated, its grains from the left bin, the auger of which is invented. The invention relates to the technique of drying the grain and oil and cannot be used in agricultural enterprises.

The purpose of the invention is to improve the quality of drying and efficiency of the process.

FIG. 1 shows an installation for implementing the proposed method.

The installation contains a hopper 1,

noria 2 for lifting the original grain .. -, - g. in the pre-cleaning machine 3, 10 is guided to a capacity of 25 t / h.

the bunker 4 of the first group unit with veins — Consequently, it will enter the dryer with torsors 5 and unloading augers 6, about 4 tons / h less (taking into account moisture,

the bunker 7 of the second group block with the vein evaporated in the dryer 11) than released the tori 8 and the augers 9, noria 10 ka. The lower level 15 sensor ne for lifting grain to the first additional-switches the augers to the grain feed again

: Batch Dryer 11, Noria 12 from the right bunker, which will increase consumption

for lifting grain from dryer 11 to grain entering the dryer up to 39 t / h

the second additional bunker dryer (with the release of 35 t / h).

13 and in the bunker 4 noria 14 for the lifting-proposed method is carried out

 ma grain from dryer 13 and feeding it to automatic maintenance of constancy

: bunker 7 Additional bunker su-20 grain consumption in the first additional Sch11LKI have upper and lower sensors of the bunker dryer 11. In the pre-dryer

i 15 level, inverters 16, fans 17. 17. the hopper of the dryer 11 is carried out per: To the fans of the hoppers 4 and 7, as well as extracting the mixture for 3-6 minutes,

i additional bunker dryers 11 and 13a in the dryer 11 itself - the first is connected to the pipelines 18 from the furnace drying at a constant flow rate of grain.

 g. 25 of this dryer, the grain dried at

the temperature of the coolant is 90 ° C, enters the elevator 12, at the outlet of which it is divided into two streams. One stream with a flow rate of about 7 t / h (taking into account the evaporation of e-3Q of my moisture in the subsequent stages) goes to the second drying in the second additional bunker dryer 13, peregregaty and nozzle 19 suction of atmospheric air with dampers 20.

The installation works as follows.

As initial parameters, we assume that the grain from seed harvesters with an initial moisture content of 32% and a temperature of 10 ° C at a maximum average hourly intensity of 15 t / h for 10 hours a day, for example, from 11 to 21 hours, comes to the drying. Thus, the daily intake for the obred of which passes the secondary discharge for a period of 10-20 minutes, and the excess through the overflow pipeline enters

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grain processing - 150 tons. Let us take a medium 35 one of the bunkers 4. In these bunkers „„ ,, „„ l. gt lt t lj / -T1 and rOlIflUMP V U VNRP

pax, after spraying for 2 hours, the grain is additionally dried by active ventilation, blowing through the fans 5 at a temperature of 50 ° C of the heat transfer medium, and before unloading from them and feeding to the initial one, the third spraying is carried out for 3 hours. From the dryer 13 the grain is released at a moisture content of 16.5% into one of the bins 7, in which it passes the fourth spraying for 4 hours,

 We take the release of impurities in the same bunker, dry it to a pre-cleaning bus of 10%, then the standard moisture content is 14% and the cooling flow rate of the grain after it is 9 t / h. It is passed with atmospheric air up to 13-15 ° C, during the preparation process, the release of grain from the first j, g 0 is sent to storage. In time

arrival of grain with moisture content of 32% from combines from 11 am to 9 pm is dried

tare calibration) - at 6 t / h. The cut-Q seed regime before condi- tional release from bunkers was also wet. 4 grams of about 90 tons, the rest of the grain (up to --- / - 60 tons of pre-cleaning) is dried

at receipt only from accumulative capacity.

Kera 1 Hvjpniu V RS .-. «-. .-: -, Technological, energetic, and econolitized power of the machine 3 The pre-55 efficiency of the proposed secondary cleaning. The drying process is achieved by following the raw material from machine 3 with the following factors. The first drying in the plotter 9 t / h and from the bunker 4 (for example, the nominal moving inverse layer with

daytime outdoor temperature 10 ° С, its relative humidity 55 /.

The transport equipment in the scheme has a capacity of 50 t / h, a cleaning capacity of 20 t / h (on high moisture grains, respectively, 40 and 10 t / h). The installation includes four BVN-40 bunkers and two additional bunker dryers SBVS-5 11 and 13, the capacity of the bins

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dryers 11 are adjusted to 35 t / h, and from the second dryer 13 (according to preliminary calibration) - to 6 t / h. The release from the hoppers is also adjusted. 4: from one 30 t / h, and from the second - 25 t / h. After entering the established mode, the grain for drying is continuously fed from bunker 1 to noria 2 at a rate of 10 t / h.

the right one according to the scheme) with a flow rate of 30 t / h is sent to the noria 10 shoe, in which it is mixed, and with a total flow rate of 39 t / h, the grain mixture enters the first additional bunker dryer 11. In connection with the fact that adjusted to 35 t / h, the level in the drying bin will increase. The upper level 15 sensor will switch the flow to recirculate, its grains from the left hopper, the auger of which is cut .. -, - g. boosted at a capacity of 25 t / h.

the temperature of the coolant is 90 ° C, enters the elevator 12, at the outlet of which it is divided into two streams. One stream with a flow rate of about 7 t / h (taking into account the evaporation of moisture at the subsequent stages) goes to the second drying in the second additional bunker dryer 13, before which the secondary binning takes 10-20 minutes, and the excess through the overflow pipeline enters

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 one of the hoppers 4. In these bunkeed maximum flow rates, the temperature of the heat carrier can be increased to 70-ISO C (depending on the initial parameters and the purpose of the grain) without overheating the grain, significantly increasing the specific moisture removal, and simplifying the operation of the dryer. The accepted grain extraction in bunkers before feeding for mixing with the initial and after secondary drying in a bunker dryer increases the intensity and energy efficiency of the dryer. The final drying of the grain to the second intermediate humidity in the second complementary bunker dryer has the same advantages as for the first additional bunker dryer. In both dryers, the temperature of the spent coolant and its relative humidity are higher than in the known methods, therefore, there is less heat loss for the spent coolant, i.e., less fuel consumption for drying.

Claims (1)

Invention Formula The method of drying the grain in the group bunkers blocks by mixing the original grain with the previously dried, first spraying mixture for 3-6 minutes, the first drying with coolant in the first group block with simultaneous heating of the grain to the maximum allowable temperature for the original grain, the second backing and the second drying .-. ani to a moisture that exceeds the conditional by 2-4%, third spraying and drying in a fixed bed to conditioned humidity with atmospheric air or air heated by 3-10 ° C at its relative humidity Chez 65%, characterized in that, in order to increase the quality ekonomichnostn drying process, and two additional ispolzovg bunker dryers, the first drying is carried out in a dense invertible layer of the first additional bunker dryer at a heating medium temperature of 70-130 ° C and constant, independent of the moisture content of the grain, to the second dried grain is directed to two parallel streams, one of which is fed to the second additional bunker a dryer in which the drying process is carried out in a moving bed at a heat carrier temperature of 50-105 ° C, 0 and the second grain stream is fed by overflow into one of the bins of the first group unit, then after the second bin, the grain is dried with active ventilated for 3-10 hours at a heat carrier temperature of 40-90 ° C, and the third binning is carried out for 2-7 hours after which they are fed to mixing with the initial grain, and after the second drying in the second bunker dryer, the grain is sent to one of the bins of the second group unit for spacing for 3-6 hours five 0 and doshuivan.