Cel The purpose of this project is to generate additional electricity by converting low temperature heating consuming operations from steam to warm water. The proposal includes the modification of existing consuming points, the extension to new heating points and the set-up of interchanging consumption points with close control to cover seasonal fluctuations in heat demand. The most important innovating process modification refers to using warm water instead of steam, for heating air and then humidifying this air supplied to the process areas, by spraying warm water in this air stream.The boiler produces 52 tons/hr of high pressure steam (60 bars, 480 deg, C) which passes through a back pressure Turbogenerator (to 3,4 bars/g) and generates power covering 50% of the total electric power needs. Steam is desuperheated to saturation and is used as process steam. According to a recent Energy Saving Project, 40% of the back pressure steam is superheated, to 260 deg. C and feeds a second Vacuum Turbine, generating additional Electric Energy and " condenser steam" (70%) at lower Temperature and Pressure (0.4 ata) plus "bleeding (extract) steam" (30%) at an average of 0,14 bars g.Both low pressure steams are condensed to heat cooling water which is used as a heating medium to appropriate low temperature heating process operation within the factory, mainly air conditioning of process area. The generated additional Electric Energy could reach 30% of the total needs but the warm water heating demands are seasonal. They fall to a minimum during summer and result in operating the Vacuum (second) Turbine under reduced capacity.In order to cope with this problem new low temperature consuming operations are found, to alternate the warm water feed, during summer. These include:a. Process improvement, resulting a better quality at low Energy cost;b. Use of warm water storage as a heat capacitor for equalizing daily fluctuations in demands, thus optimizing the Turbine performance;c. Process modifications designed to suit and support the new scheme;d. Utilization of effluent heat content, where applicable;e. Covering energy loads required for a slight expansion of the capacity.Such an operating scheme becomes complex and requires continuous monitoring of the heat demand and the electric power supply, and could only be implemented by using a Programmable Logic Controller, to undertake, manage and control all these operations.The proposed scheme is expected to generate an additional 3.400.000 kWh per year, at an energy conversion of over 86% and increase in practice the overall year round efficiency of the second Vacuum Turbine from 65% to 84% and 500 TOE on a National base.The net savings of ETMA are estimated to reach 20.000.000 Drs/year in direct costs (electric power charged minus fuel consumed) plus over 5000000 Drs for overcharges of peak power supplies which will now be smoothed. Finally, ETMA expects to become energy self sufficient for its most crucial manufacturing processes. Program(-y) ENG-ENDEMO C - Programme (EEC) of demonstration projects and industrial pilot projects (EEC) in the energy field, 1985-1989 Temat(-y) 3.4 - INDUSTRY Zaproszenie do składania wniosków Data not available System finansowania DEM - Demonstration contracts Koordynator ETMA ARTIFICIAL SILK SA Wkład UE Brak danych Adres AYIAS ANNIS STREET 11 VOTANIKOS 11855 Athens Grecja Zobacz na mapie Koszt całkowity Brak danych
