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| Content Provider | Springer Nature Link |
|---|---|
| Author | Shvarts, A. L. Verbovetsky, E. Kh. Somova, E. V. Smolin, A. V. |
| Copyright Year | 2015 |
| Abstract | Development of a coal-fired boiler for a power plant unit of 800 MW with advanced ultra-supercritical steam parameters of 35 MPa and 700/720°C is presented. The main technical solutions providing the reliability, profitability, and low emissions of harmful substances in the atmosphere are given. The fuel is the black coal of (Taldinskoye field, Kuznetsk basin). The gross efficiency of the boiler is 94%. The U-shaped configuration of a boiler is chosen, which allows the reduction of the capital expenditure for steam turbine piping made of expensive nickel alloys. The horizontal connection flue of the boiler, where the primary and reheat steam screens are located, is equipped with two cold funnels. The upper section of the convection shaft is separated with a vertical screen wall into two parallel “split tail” flues, which allows one to control the reheat steam temperature by redistributing the flue gas between the gas flues. The URS screens are two-stage with a lifting motion of the medium and a partial bypassing of the first stage. The lower radiant section is two-stage. To reduce the temperature of screen walls at the fire chamber outlet, the lowering motion of the working medium and combustion gases is used. The hydrodynamics of the screens with the lowering motion of the medium for preventing the aperiodic instability in the start regimes is analyzed. Besides the stepwise combustion of coal dust providing the improved environmental parameters, the boiler plant is equipped with a selective catalytic reduction (SCR) system, an ash collector (an electric filter combined with a filter bag), and a desulphurization device. |
| Starting Page | 892 |
| Ending Page | 896 |
| Page Count | 5 |
| File Format | |
| ISSN | 00406015 |
| Journal | Thermal Engineering |
| Volume Number | 62 |
| Issue Number | 12 |
| e-ISSN | 15556301 |
| Language | English |
| Publisher | Pleiades Publishing |
| Publisher Date | 2015-11-03 |
| Publisher Place | Moscow |
| Access Restriction | One Nation One Subscription (ONOS) |
| Subject Keyword | coal-fired power unit boiler advanced ultra-super critical parameters of steam invert configuration aperiodic stability Engineering Thermodynamics, Heat and Mass Transfer |
| Content Type | Text |
| Resource Type | Article |
| Subject | Energy Engineering and Power Technology Nuclear Energy and Engineering |
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