An adjustable nozzle low no gas suitable for medium and low calorific value gas x burner

Abstract

In order to solve the problems of difficult ignition, unstable combustion, low combustion efficiency, and difficulty in effectively suppressing the nitrogen oxides generated during the combustion process of the conventional gas burner used in the recovery and utilization of medium and low calorific value gas, the present invention provides a Adjustable nozzle low NO for medium and low calorific value gas x The burner includes a gas inlet flow channel, an air flow channel, an air swirl device and a gas distribution ring; the gas inlet flow channel is set through the upstream side wall of the air flow channel; the gas distribution ring is sleeved and installed in the upstream of the air flow channel, It communicates with the gas inlet channel; the end face of the gas diversion ring is connected with a plurality of first gas branch pipes, a plurality of second gas branch pipes and a plurality of third gas branch pipes; the air swirl device includes a swirl inner ring, a swirl outer ring, and A plurality of swirl blades are arranged circumferentially between the swirl inner ring and the swirl outer ring; three kinds of gas branch pipes are arranged alternately from the center to the outside, and the gas is supplied radially and circumferentially in stages.

Description

Technical field [0001] The present invention belongs to the field of thermal energy and power engineering technology, relates to a medium and low calorific value gas burner, in particular a nozzle adjustable low NO suitable for low calorific value gas x Burner. Background [0002] The common low and medium calorific value gas in the industry mainly includes blast furnace gas, coke oven gas, converter gas, low calorific value coal bed methane, etc. The recycling of these low and medium calorific value gases as a supplement to the energy system has a positive effect on alleviating the shortage of energy reserves and improving the atmospheric environment. However, due to the complex composition of these low calorific value gases, the combustible content is low, and it contains more inert gases, such as CO 2 、N 2 Therefore, the calorific value is low, and when using conventional gas burners, there are usually problems such as fire difficulties, unstable combustion, and low combustion...

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to solve the problems of conventional gas burners used in the prior art when recovering and utilizing medium and low calorific value gas, which usually have difficulty in ignition, unstable combustion and low combustion efficiency, and the nitrogen oxides generated during the combustion process are difficult to be effectively suppressed To solve the problem, provide an adjustable nozzle low NO gas suitable for medium and low calorific value gas x burner

Images