Theme master's works:
"The choice and development of actions on reduction of industrial wastes Starobeshevska TES"
The subject is devoted to an actual problem of ecology of an environment. The ecological rating of any power project is examined as his basic part directed first of all on elimination or restriction of possible negative ecological consequences. One of the negative phenomena at operation ТES is pollution of air pool by harmful substances, ejectable with smoke gases of boilers.
The heat in a nucleus of a torch of burning necessary for burning carbon ASH with liquid slag disposal causes high concentration of emissions NOx, and the high maintenance of sulfur in fuel (up to 1,8 %) and necessity of use of black oil illumination – high levels SO2. systems it is grey clearing and nitrogenrepressing the project did not provide.
Clearing of smoke gases of flying ashes is carried out in wet ash-trap – scrubbers МP-VTI with pipes Venturi. The design degree of clearing of dust removal facilities makes 96,2 %, the actual average operational overall performance of gas purification is within the limits of 92,2 – 92,5 %.
Toughening of ecological norms shows rigid requirements to the established power equipment in this connection investment on modernisation working ТES is possible only with installation of the non-polluting equipment or accommodation on platform installations on dustrepressing, sulfursanitation and to suppression оксидов nitrogen. As cost gas purifying the equipment makes up to 40 % of cost of capital equipment TES, and also for the lack of the free areas on existing platform power stations, equipment of boiler installations grey and nitrogensanitation is rather complicated.
The decision of this problem – in development of new technologies of burning of firm low-grade fuel in котлоагрегатах with circulating boiling layer (АTSKS) at atmospheric pressure, in boiler unit with a boiling layer under pressure, in use of new types of torches, gas-turbine superstructures, and also other technologies and means
One of advantages of technology of burning of firm fuel in boiler unit АTSKS is the complex of the technological actions incorporated in the technology of burning of firm fuel in fluidized a layer and providing with decrease of emissions of harmful substances in an atmosphere in comparison with traditional boilers with torch burning. Decrease in concentration of harmful substances in smoke gases from boilers ATSKS is carried out:
- oxide nitrogen (NOх) for the bill medial furnace temperatures 850 – 9000With and step burning of fuel;
dioxide sulfur (SO2) at the expense of linkage of sulfur by the limestone submitted in furnace of the boiler.