BURNER WITH FLAME STABILIZING/CENTER AIR JET DEVICE FOR LOW QUALITY FUEL

摘要

The present disclosure relates to a center air jet burner for burning low quality fuel including an annular pipe having a fuel inlet and a fuel outlet. A core pipe that includes a first opening and an opposite second opening that defines an inner zone, the core pipe extends within the annular pipe defining a first annular zone. A burner elbow is configured to supply a fuel airflow mixture including pulverized coal and primary air to the fuel inlet and the first opening. The first opening of the core pipe is eccentrically aligned relative to the fuel inlet of the annular pipe such that the fuel airflow mixture passing through the burner elbow is divided into an outer fuel rich stream having an increased amount of pulverized coal within the first annular zone and an inner fuel-lean stream having an increased amount of primary air within the inner zone.

主权项

1. A center air jet burner for burning low quality fuel comprising:
an annular pipe that includes a fuel inlet and a fuel outlet aligned along an axis; a core pipe that includes a first opening and an opposite second opening that defines an inner zone, the core pipe extends axially within the annular pipe and is surrounded by the annular pipe, a space between the annular pipe and the core pipe defines a first annular zone; and a burner elbow defines a cavity and includes an outlet that is operably secured to the inlet of the annular pipe, the burner elbow is configured to supply a fuel airflow mixture including pulverized low quality fuel and primary air to the fuel inlet of the annular pipe and the first opening of the core pipe; wherein the first opening of the core pipe is eccentrically aligned relative to the fuel inlet of the annular pipe such that the first opening is configured to capture and separate a portion of primary air from the fuel airflow mixture such that the fuel airflow mixture passing through the burner elbow is divided into an outer fuel rich stream having an increased amount of pulverized fuel within the first annular zone and an inner fuel-lean stream having an increased amount of primary air within the inner zone.