Method for adjusting a burner during the start-up phase in a fur

Details Method for adjusting a burner during the start-up phase in a fur Method for adjusting a burner during the start-up phase in a fur

1992-04-15

1993-05-04

Yeung, James C.

Combustion

Process of combustion or burner operation

Starting or shutdown procedure

431 9, 431 62, F23N 520

Patent

active

052075699

ABSTRACT:
A method for adjusting a burner during the start-up phase in a furnace operated with recirculated flue gas (3), the furnace is subjected to a pre-flushing period prior to start-up. The furnace is started with a constant fuel amount (5), the fresh air (2) aspirated from the outside at first being reduced by means of a control. In the beginning, the stoichiometric or near-stoichiometric air balance for combustion is provided by recirculation of the fresh air (4) in the furnace. Following ignition of the burner, an increase of fresh air (2) from the outside will take place as a function of the diminishing fresh air (4) from the furnace. The diminishing fresh air (4) recirculated from the furnace is replaced by also recirculated flue gases (3) in such a way that at the end of the start-up phase only a combustion air mixture consisting of fresh air (2) from the outside and recirculated flue gases (3) is used.

REFERENCES:
patent: 4338074 (1982-07-01), Johansson
patent: 4995807 (1991-02-01), Rampley et al.

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