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Combustion experience of estonian oil shale in large power plants.
| Content Provider | CiteSeerX |
|---|---|
| Author | Pihu, T. Arro, H. Prikk, A. Parve, T. Loosaar, J. |
| Abstract | By the mid-1950’s building in Estonia a new Balti Power Plant (BPP) firing local oil shale was decided. Based on the operation experience of mid-pressure pulverised oil shale boilers and their research it had become clear that П-shaped boilers firing coal or brown coal are not suitable for oil shale. Thus, the Taganrog Boiler Manufacturing Factory in Russia, in cooperation with sev-eral former Soviet Union research institutions and the Tallinn University of Technology (TUT, former Tallinn Polytechnic Institute), developed a new oil shale boiler TP-17 with steam output of 220 t/h (10 MPa, 540°C). Based on practical experience, new more powerful boiler TP-67 with three gas passes and steam output 320 t/h (14 MPa, 540/540°C) was created. Another power plant – the Eesti Power Plant (EPP) equipped with 200 MWe double units (EPP, 1600 MWe) – was launched in 1969-1973. Based on the knowledge and experience acquired in the course of TP-17 and TP-67 operation a new pulverised oil shale boiler – TP-101 – was created for these units. The total of 42 pulverised firing (PF) oil shale boilers TP-17, TP-67 and TP-101 were launched at oil shale power plants in Estonia in 1959-1973. Estonian oil shale proved to be a fuel with such complicated properties that no good operating boilers could be developed despite all the modern knowledge of the day applied. Nor could the conducted reconstructions ensure that the boilers operate with the parameters stipulated in the initial project. The boilers ’ operating capacity remained at 80-90 % of the planned values. The main problems that could not be liquidated were the intensive fouling of the heating surfaces with hard fly ash deposits and the high-temperature corrosion and wear of steam superheaters. Due to the intensive fouling and corrosion of the heating surfaces, the efficiency factor remained at 28-30%. In the early 1990’s the need to renovate oil shale power plants became evident – as the operating |
| File Format | |
| Access Restriction | Open |
| Subject Keyword | Oil Shale Power Plant Intensive Fouling Steam Output Heating Surface Practical Experience Planned Value Taganrog Boiler Manufacturing Factory Brown Coal Tp-67 Operation Conducted Reconstruction Mid-1950 Building Local Oil Shale New Oil Shale Boiler Tp-17 Tallinn University Oil Shale Boiler Tp-17 Efficiency Factor Estonian Oil Shale Initial Project Powerful Boiler Tp-67 Mwe Double Unit Main Problem Former Tallinn Polytechnic Institute Operation Experience Oil Shale Complicated Property Gas Pass New Balti Power Plant High-temperature Corrosion Hard Fly Ash Deposit Good Operating Boiler Steam Superheaters Power Plant Oil Shale Boiler Pulverised Firing Modern Knowledge Eesti Power Plant |
| Content Type | Text |
