METHODS AND MEANS OF AUTOMATIC CONTINUOUS MONITORING OF DUST CONCENTRATION AND DUST CONTROL IN THERMAL POWER PLANTS OPERATING ON COAL

In Russia today, there are 358 thermal power plants of large and medium electric power capacity (more than25 MW). The urgent problem of safety at TРР enterprises is the problem of coal dust emission, which affects both ecological and industrial safety. The situation is aggravated by the fact that thermal power plants are in most cases located within the city limits.Modern regulatory and technical base provides for a number of measures to reduce dust, which do not give the desired effect. The article considers new methods - the use of automated dust control and dust suppression systems on the basis of the pneumatic hydraulic spraying system (hereinafter referred to as РGO), which signiicantly improve the level of industrial safety of coal plants, as well as improve the ecological situation around TРР. The main features, elements and places of РGO systems' installation are considered. Examples are given of the РGO system scheme with a dispenser for a liquid wetting agent, a scheme for installing a РGO in a coal storehouse, and a schematic diagram of a pendant mobile РGO system for spraying a dust stopping screen.Tests of the РGO system have proved its effectiveness. Correct installation and adjustment in premises, sites of overloading and galleries increases the effect of dust suppression to 98%, and in open areas to 80%. ln combination with the existing installation "Wind barrier", the eficiency of the РGO system in open areas can reach 90%.The article notes that to actively introduce such systems into the production cycle, it is necessary to revise the regulatory framework in the ield of operating rules for thermal power plants.