Flame-adjustable burner, and installation structure and application method thereof

Abstract

The invention relates to a flame-adjustable burner, and an installation structure and an application method thereof. The flame-adjustable burner comprises a burner body, air pipes, gas pipes and flowmeasuring and adjusting devices, wherein the air pipes and the gas pipes are connected with the burner body; the flow measuring and adjusting devices are arranged on the air pipes and the gas pipes. The burner body is provided with a center air duct, an inner ring gas duct, an inner ring air duct, an outer ring gas duct and an outer ring air duct from inside to outside in sequence. The flame-adjustable burner provided by the invention is adjustable in flame length, contour and air-fuel ratio. Gas and distributed air can be uniformly and completely mixed. While the calcinations temperature is satisfied, and low-NOx emission can be realized; moreover, the flame-adjustable burner is capable of being automatically adjusted, safe and controllable in the burning process. The flame-adjustable burner has two working positions and can meet the requirements for normal operation and ignition, realize angle fine adjustment through a flexible seal and ensure that flames do not sweep a kiln liner.

Description

technical field [0001] The invention relates to a burner, in particular to an adjustable flame burner used in a rotary kiln, its installation structure and usage method. Background technique [0002] Rotary kilns are widely used in metallurgy, chemical industry, building materials and other fields, and the burner is the core component of the rotary kiln. At present, most of the burners of gas-fired rotary kilns in China are lagging behind in terms of performance indicators and control levels. The main performance is that manual ignition is adopted, and there is no automatic control of air-fuel ratio, resulting in large temperature differences in the kiln and poor quality of calcined products; and The traditional gas-burning burner has a small adjustment ratio, the flame cannot be adjusted, and there are defects such as uneven gas mixing, incomplete combustion, and unsafety. In addition, the burner is fixed on the kiln hood, its inclination angle is fixed, and there is no ro...

AI Technical Summary

Problems solved by technology

At present, most of the domestic gas-fired rotary kiln burners are lagging behind in terms of performance indicators and control levels. The main performance is that manual ignition is adopted, and there is no automatic control of air-fuel ratio, resulting in large temperature differences in the kiln and poor quality of calcined products; and The traditional gas-fired burner has a small adjustment ratio, the flame cannot be adjusted, and there are defects such as uneven gas mixing, incomplete combustion, and unsafety.

In addition, the burner is fixed on the kiln hood, its inclination angle is fixed, and there is no room for adjustment. The performance and effect of the burner have been finalized after the design and installation are completed, and cannot be optimized through post-installation adjustments; if using It is found that the flame directly washes the kiln lining, so it can only be reinstalled after disassembly

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