Case Customers in the Oxygen-Enriched Combustion Industry
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Air containing 21% oxygen—when combustion is carried out using oxygen‑enriched air with a high oxygen concentration—it is referred to as oxygen‑enriched combustion (OEC). When 90% oxygen is used to assist combustion, it is called pure oxygen–assisted combustion. This is a highly efficient and energy‑saving combustion technology that finds applications in the glass industry, metallurgical industry, and thermal engineering fields. Oxygen‑enriched and pure oxygen–assisted combustion technologies can be divided into two main categories: whole‑scale oxygen enrichment and local oxygen enrichment. Whole‑scale oxygen enrichment involves replacing the entire combustion air supply with oxygen‑enriched air, which requires substantial capital investment. In contrast, local oxygen enrichment technology uses only 0.5–15% of the total oxygen required for combustion, much like adding steel to the very edge of a blade—while both the original combustion air volume and flue gas emissions are significantly reduced. Local oxygen enrichment technology encompasses a range of specialized oxygen‑enriched nozzles, along with advanced techniques such as “gradient combustion,” “symmetrical combustion,” “α‑type combustion,” “S‑shaped combustion,” and “quadrilateral combustion,” all tailored to match specific kilns and fuels. The design principle behind oxygen‑enriched nozzles is to deliver oxygen precisely where it is most needed by the product.
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