Introduction of Burners with In-Furnace Flue Gas Recirculation at a Power Boiler View Full Text


Ontology type: schema:ScholarlyArticle     


Article Info

DATE

2021-11-03

AUTHORS

N. A. Zroychikov, D. R. Grigoriev, M. Gamburg, A. V. Pay

ABSTRACT

The results of the reconstruction of an E-500-13.8-560 KDT (TPE-430) boiler performed to reduce nitrogen oxide (NOx) emissions are discussed. In this case, a NOx concentration of 119 mg/m3 has been reached only by using new burner devices. It has been demonstrated that the applicable environmental legislation contains a set of measures having a considerable effect on the current and planned business activities of the thermal power industry and power machine building enterprises. A brief description of the boiler is presented. Challenging issues of its operation are considered, and the operating and investment expenditures are analyzed. The thermal design of the boiler is assessed. The available burner devices with ultralow emissions are considered, and their best option has been selected. It has been demonstrated that successful implementation of the project requires special engineering activities to be performed before replacing the burners in the boilers to optimize the design and parameters of the air path. To construct a model of the air path, on-site studies of the air ducts of the TPE-430 boiler were carried out. On the basis of the obtained data, a physical model of the air path was made of plexiglass air. It was blown with cold air whose flow was visualized using helium soap microbubbles. The results of the physical simulation were used to arrange the annular ducts from the manifold to the new burners and to determine location and size of structural members to be installed in air ducts and burner boxes to achieve the required uniformity of the air flow. More... »

PAGES

865-872

Identifiers

URI

http://scigraph.springernature.com/pub.10.1134/s0040601521110082

DOI

http://dx.doi.org/10.1134/s0040601521110082

DIMENSIONS

https://app.dimensions.ai/details/publication/pub.1142375186


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