SU1707202A1 - Method of peat pilling for drying - Google Patents

Description

The invention relates to the techno: from the production of milled peat.

The purpose of the invention is to increase the efficiency of the method by reducing the energy consumption of drying time and using it for drying peat in piles.

The method of placing the peat in the drying day stack includes calculating the height of the layer to be dried by determining the drying parameters, and the coefficient K is additionally determined taking into account the features of the slope relief, the difference of solar radiation on the solar and shadow sides of the pile and the initial moisture of the peat and determine the height of the stack to be dispensed.

Sfraterondian peat crumb jes of pre-drying it in a spreading path Formed into a stack of nuts that are

The season is dried in layers on the slopes with the cleaning of dry layers in separate piles. In this case, the volume of the russified headquarters. A-naaala is determined from the ratio

h- To mer-up

(} (1 - 1Ш)

gd “h is the height of the pile-pile or layer on the slope, m;

1sr - the duration of drying of peat on the slopes, kg / m-h;

Qcp - drying intensity in the cycle, season, h,

UM t is the initial volumetric density of tor-F in shtzbzla-naval, kg / m3;

a) v - v-.capital peat moisture in the stack, slaz,%;

P X {

FO Oh K)

tgp &

(/ - finite E. LEGE peat in Shgebelenapale. Layer.%:

K 2 V2 - coefficient for stacking dumps with slope angles 45.

Intensive drying of peat on the slopes of bulk piles is 1.5-2 times higher than the same indicator for laying on deposits, according to the method for producing peat on the slopes of bulk pile Icp is taken within 0, 4 kg / m-h .

The data on the proposed method of stacking peat in a stack for drying are shown in the table.

The intensity of drying of the peat layer on the slope with a two-day drying cycle was 0.183 kg / m2 -h, i.e. 1.7-2.2 times lower than the average. Thus, during this period, you can dry the peat layer twice as long or shorten the drying time on the slope by half,

The proposed calculation formula allows you to determine the height (volume) of the pile being formed. If the estimated icp is 0.4 kg / m2 -h, which corresponds to n 2.5 m with a total drying time of 500 hours per season, then the bulk-stack will not be dried, Eeli Wed 0.3 kg / m -h, then fully weather conditions are used and drying efficiency on slopes decreases, since h V, the piles are formed of small height and small volumes that do not ensure filling of the seasonal task.

An example. The method was tested when drying piles of milled peat, having the following characteristics: basement-lowland, decomposition degree 25%, initial moisture content of peat 78%, initial peat density in the stack 405 kg / m, Average intensity of peat drying on the slope 0, 30-0.40 kg / m2 -h the duration of the drying season is 600-650 hours. The optimum height of the stack to be dried is 2.5 m. With a decrease in the initial moisture content of peat in the pile

ceteris paribus, the height of the volume is increased to 3 m. With an increase in the initial moisture of the peat in the stack, the height of the pile is reduced to 1.5-1.7 m, since the duration of drying of peat in the volume of the entire pile increases,

Claims (1)

Claim method A method for placing peat in a stack for drying includes calculating the height of the layer to be dried by determining the drying parameters, characterized in that, in order to increase the efficiency of the method by reducing energy costs, drying time and using it for drying peat in piles, additionally determine the coefficient K, taking into account the features of the slope relief, the difference of solar radiation on the solar and shadow sides of the pile-pile and the initial moisture of the peat in the bulk of the pile, and the height of the piece to be dried Br -navala determined from the ratio h v P - 10 ° ° 100 where h is the height of the stack or the layer on the slope, m; 1Cr - the intensity of drying peat on the slopes, kg / m h; Qcp - drying time in the cycle, season, h; un - the initial bulk density of peat in the pile-dump, kg / m3; (OH is the initial moisture of peat in the stack, layer,%; Sc - is the final moisture of peat in the pile-bulk, layer,%; K 2 V2 - coefficient for stacking dumps with slope angles of 45 °.