公开(公告)号：WO2006044408A1

公开(公告)日：2006-04-27

申请号：PCT/US2005/036565

申请日：2005-10-12

Applicant: SHELL OIL COMPANY ,  HAMILTON, William Larry ,  JOHNSON, Gregory Lynn

Inventor： HAMILTON, William Larry ,  JOHNSON, Gregory Lynn

IPC: F23D14/72 ,  F23L11/00 ,  F23N1/04 ,  F23N5/18 ,  F23N5/24

CPC classification number: F23N5/184 ,  F23D2209/20 ,  F23N1/022 ,  F23N1/042 ,  F23N5/242 ,  F23N2025/04

Abstract: The invention includes method and apparatus for controlling the stability of a burner, preferably a low NO x burner, of a natural draft heater. The method includes measuring the draft over a time period and generating a measured output from which a draft function is determined that defines the relationship between the draft and time during the time period. A value for the burner stability is defined that is representative of a stable burner operation. The draft function is compared to the stable burner value to determine a differential value, and the operation of the fired heater is adjusted in response to the differential value. The apparatus includes means for measuring the draft over a time period and means for generating a measured output from which a draft function is determined that is proportional to the cyclic variation of the draft during the time period.

Abstract translation: 本发明包括用于控制燃烧器的稳定性的方法和装置，优选地是低的NO