High-temperature smoke generator and control method thereof

Abstract

The invention provides a high-temperature smoke generator and a control method thereof. A duty nozzle assembly is arranged at the center of a combustion chamber head baffle, and a premixing nozzle assembly is uniformly distributed on the combustion chamber head baffle in the circumferential direction. An annular air channel is formed between the outer wall of a combustion chamber and a combustionchamber flame tube, and an airflow rate distributing adjusting valve is arranged at an annular channel inlet. High-speed jet flow of premising nozzles forms entrainment backflow in the middle of the combustion chamber, and through a smoke internal circulation mechanism, the forming amount of nitrogen oxide in the combustion chamber is decreased. The outer wall surface of the combustion chamber flame tube is provided with a fin structure to enhance cooling of air in the annular channel to the flame tube. The tail of the combustion chamber flame tube is provided with a plurality of rows of mixing holes, by reasonably distributing the hole diameter and the position of the mixing holes, smoke and mixed air are sufficiently mixed, and accordingly, the uniformity of the outlet smoke temperatureand component distribution is ensured. The high-temperature smoke generator cooperates with the airflow rate adjusting valve, so that effective adjusting of the outlet smoke temperature is achieved.

Description

technical field [0001] The invention relates to the technical field of low-pollution combustion, in particular to a high-temperature flue gas generator and a control method thereof. Background technique [0002] High-temperature flue gas generators are usually used in the development of gas turbine hot-end components and heat source supply in the petrochemical field. During the research and development process of the hot-end components of the gas turbine, the flue gas generator is placed upstream of the test section to provide the test section with flue gas under specific flow and temperature conditions, so as to realize the simulation of the real environment where the hot-end components are located. In the field of petrochemical industry, flue gas generators are usually required to generate a large amount of high-temperature flue gas to provide heat sources. Most of these flue gas generators require stable combustion, high combustion efficiency, small pressure drop, unifor...

AI Technical Summary

Problems solved by technology

The generation of carbon monoxide and inhalable particulate matter not only endangers human health, but also causes a decrease in combustion efficiency.

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