公开(公告)号：US20160018102A1

公开(公告)日：2016-01-21

申请号：US14799091

申请日：2015-07-14

Applicant: Chevron U.S.A. Inc.

Inventor： Thomas F. Robertson ,  John J. Nowakowski ,  Mark C. Hannum ,  Stein J. Storslett

IPC: F23C9/08 ,  F23K5/10 ,  F23C5/08 ,  F23D23/00

CPC classification number: F23C9/08 ,  F23C5/08 ,  F23C6/047 ,  F23C2202/20

Abstract: A steam generator system employing a fired burner with a flue gas recirculation system with low NOx emission is disclosed. A method to retrofit fired burners for low NOx emission is also disclosed. In the system, the flue gas recirculation system is configured to include a pre-mixer, and the recirculated flue gas (RFG) is routed to the stage of the pre-mixer for mixing with a portion of the fuel stream, forming a secondary RFG fuel mixture. The secondary RFG fuel mixture is routed to the secondary stage of the burner via a plurality of injector ports. The injection of the second RFG fuel mixture results in a reduction of temperature for the NOx emission to be less than 5 ppm at 3% O2, dry basis.

Abstract translation: 公开了一种使用具有低NOx排放的烟道气再循环系统的燃烧式燃烧器的蒸汽发生器系统。 还公开了一种改进低NOx排放的燃烧式燃烧器的方法。 在系统中，烟道气再循环系统被配置为包括预混合器，并且再循环烟道气（RFG）被引导到预混合器的阶段以与一部分燃料流混合，形成次级RFG 燃料混合物 次级RFG燃料混合物经由多个注射器端口被引导到燃烧器的二级。 第二RFG燃料混合物的注入导致NOx排放的温度在3％O 2（干基）下小于5ppm。

公开(公告)号：US10281140B2

公开(公告)日：2019-05-07

申请号：US14799091

申请日：2015-07-14

Applicant: Chevron U.S.A. Inc.

Inventor： Thomas F. Robertson ,  John J. Nowakowski ,  Mark C. Hannum ,  Stein J. Storslett

IPC: F23C5/08 ,  F23C6/04 ,  F23C9/08

Abstract: A steam generator system employing a fired burner with a flue gas recirculation system with low NOx emission is disclosed. A method to retrofit fired burners for low NOx emission is also disclosed. In the system, the flue gas recirculation system is configured to include a pre-mixer, and the recirculated flue gas (RFG) is routed to the stage of the pre-mixer for mixing with a portion of the fuel stream, forming a secondary RFG fuel mixture. The secondary RFG fuel mixture is routed to the secondary stage of the burner via a plurality of injector ports. The injection of the second RFG fuel mixture results in a reduction of temperature for the NOx emission to be less than 5 ppm at 3% O2, dry basis.