| 摘要 |
The invention relates to a sulphur dioxide to sulphur trioxide converter with quick heating of the catalyst beds, during starting and restarting after shut-down for short periods. According to the invention, the converter is provided with an initiating exchanger (11) having some open flaps (a, b and c) and a closed flap (d) ensuring the heating of the catalyst beds up to 150°C in a first stage, while during the second stage of heating by means of hot gases directly from the oven (10), said hot gases are passed through a boiler (7) having some flaps (a, b and c) closed and the flap (d) open. Further on, the hot gases traverse the catalyst beds of the converter (4) circulating through the open flaps (e, f and g) thus avoiding a heat-exchanger (3) and a vaporizer (5).
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