METHOD OF PROTECTING THE SIEVE WALL OF THE COMBUSTION CHAMBER OF A FIRED HEAT EXCHANGER, AND A FIRED HEAT EXCHANGER FITTED WITH PROTECTION OF THE SIEVE WALL OF THE COMBUSTION CHAMBER

摘要

The method of protecting the sieve wall of the combustion chamber of a fired heat exchanger is characterised in that before a fired heat exchanger (1) is started, the control unit (9) of the fired heat exchanger (1) is pre-programmed with a limit temperature Tg adopted for the sieve wall (5) of the combustion chamber (3), whereupon, during the operation of the fired heat exchanger (1) the actual temperature Ta of the sieve wall (5) of the combustion chamber (3) is measured on the side of the water chamber (4) using an additional temperature sensor (T4), the signal from which is supplied to the control unit (9) and processed, following which the value of the actual temperature Ta is compared against the limit temperature Tg, and when both values are equal, the control unit (9) generates an alarm signal off. Once the fired heat exchanger is off, the limescale accumulated on the sieve wall (5) of the combustion chamber (3) is removed in any known way. The fired heat exchanger is fitted with additional sensor of temperature (T4) fixed in the socket (12) on the sieve wall (5} of the combustion chamber (3) on the side of the water chamber (4), and connected, either via a wire or wirelessly, to the control unit (9).