PL95623B1 - METHOD OF REDUCING THE CONCENTRATION OF CARBON DIOXIDE IN THE FURNACE P - Google Patents

Description

The subject of the invention is a method of reducing the concentration zenia carbon dioxide in powdetlrizu ko (pailnriiafnyim over or under-wall sidewalks of walls led up to the boundary of the field on the heel or with application pneumatic prop.

Hard coal coils, as a rule, of a character risk the occurrence of a mine in the air carbon dioxide, at which the gas is mixed with carbon dioxide natural walking, this zniaazy is released from the ex¬ coal seams and rock companions respect these decks.

Selectable on service platforms with walls with a collapse of the roof or with an ipodisaidzka pneuma¬ tic in the dial direction to the limit, in walking walls can show significant signs carbon dioxide concentrations in excess of those the allowable mining bill is 1%. Mo- that it was a cause of slow process disturbances production and the growth of threats to the crew lower.

So far, the fight against the risk of dioxide the coal is guided by means of ventilation, that is, by increasing the intensity of grinding in exploitation works. This way requires the execution of dirogi and inlvesltycji, as in an example of drazing new stone workings and carbon, replacement of the main fans ventilating or rebuilding. Moreover, there was a lot of no the convenience of this method is besides high costs ts, long ten minutes of execution of specific works and Wesitycyjinyich. There is therefore a limit of the saw blade cross-sectional area combating the risk of carbon dioxide carbon by wenltylacyijinymli, that is, through increasing the intensity of the main ventilation, constant they are no longer profitable.

The object of the invention is to eliminate the above drawbacks and inconvenience. This goal was achieved with the help of the whole way of reducing the concentration of carbon dioxide in mine air according to the invention. Being The invention is based on the fact that on the wall sipag pits, prized by a collapse or run with the proppant, placed (parallel to the forehead The walls are partially perforated every 2.4 to 4.8 meters dives with a diameter of 0.1 to 0.2 meters and long gO) sci of most preferably 0.5 of the length of it excavations. After induction of a heart attack or execution the proppants are joined to the non-perforated ends of these pipes with flanged lutes arranged successively not on the spag above or sidewalk, but on the the steppe is sucked off the carbon dioxide from the goafs to group (used air current or on vrrachine.

The most important advantage of the method of lowering the concentration carbon dioxide in the mine air / According to of the invention is the possibility of draining its part those from the goafs directly to the group currents of air with a low concentration of two carbon monoxide or on the surface of the mine, which it is possible to avoid its excessive concentration in regional air currents. This allows for 9562395623 3 effective control of the threat of carbon dioxide gla without expensive investments, while it is possible increasing production in certain fields of export ploatation.

The subject of the invention is described in more detail below, based on an example of its use p given in the drawing showing the method of lowering the concentration of carbon dioxide in the air of the car smoked sub-wall chiodiniiifea.

On the wall spag. excavations of 1 100 metro wall 2 led to the field gram, put It runs parallel to the face of this wall partially perforating the pipe 2f with a diameter "d" equal to 0.1 meters and a length "L" of 45 meters heaving, 3 pipes equipped with naeperforo- waiff ^^ SfftffSwik ^^. with a length of 10 meters tr £ f from the side of the p ^ sidewalk 5, joins with collars located on the spag of this pavement lutes 6 with a diameter "D" of 0.6 meters.

Then several wall cuts are made 2, a horse is placed on the spag of the wall excavation consecutive partially perforated pipes 3 at a distance of 3.6 meters from the previous ones and after causing a collapse, la¬ or their end 4 with successively arranged in sidewalk 5 flanged lutes 6. Repeating the above activities are sucked off the carbon dioxide do 7 with a highly depressive ventilator lator 8, unimpeded at the outlet of lute 6 in Dec. the exhaust current 9 of the exhausted air, where the correct length of the solid tips 4 dive 3 ensures its good migration.

In the group current of the 9th spent air, in where the carbon dioxide concentration is less than 0.5%, there is a dilution of flowing lutes 6 mixtures of carbon dioxide and air. For use compliant scan of carbon dioxide concentration coal, the lutes 6 are equipped with regulating valves air supply from under-wall pavement 5.

Claims (1)

1. As a non-patent method of lowering the concentration of carbon dioxide in the mine air above or underneath the new wall headings led to the field boundaries on the collapse or with the use of a pneumatic subsidence, characterized by the fact that first on the sipag of the wall heading r (l ), before creating a collapse or filling, place 2.4 to 4.8 meters parallel to the face of the wall, every 2.4 to 4.8 meters, partially perforated pipes (3) with a diameter "d" ranging from 0.1 to 0.2 meters and length "L" being most preferably 0.5 of the length of this heading (2), and then, after inducing a collapse or making a proppant, their non-perforated ends (4) are joined with flanged lutes (6) successively laid on the slope above or under the wall pavement (5), and then the carbon dioxide is sucked from the goafs (7) into the coarse current (9) of the used air or onto the surface. National Printing House, Plant No. 6, residing in 1024/78 Price: PLN 45