The largest single ammonia oxidation furnace for nitric acid plants in the country was dispatched from Shanghai
On June 8th, the largest single nitric acid plant in China (1,200 tons per day) - the nitrate ammonium oxidation furnace of Zhejiang Petrochemical High-end New Materials Nitric Acid Plant, which was supplied by China National Chemical Corporation's Seding Company and manufactured by Equipment Technology Company, was successfully dispatched from Shanghai.
As a global leader in the dual-process nitric acid production, Seding Company has established a proprietary and patented technology system covering process design, equipment structure, and intelligent operation and maintenance. It holds proprietary nitric acid process technology, one invention patent, and four utility model patents. Among them, the "Oxidation furnace Heat exchange Component" technology, through the design of an efficient heat conduction structure, The steam production efficiency of the oxidation furnace has been raised from 1.189 tons per ton of acid to 1.272 tons (average), and the exhaust gas emissions after ammonia reduction treatment are below 30ppm, far exceeding the national and industry standards. Up to now, Seding Company has completed over 90 sets of nitric acid plant designs and EPC projects both at home and abroad. Its domestic market share exceeds 90%, and it has successfully built factories in overseas markets such as Indonesia and they are operating stably. Its 1,000-ton-per-day double-pressurized nitric acid technology was certified as "internationally advanced" by the China Petroleum and Chemical Industry Federation in 2020. It has since won five provincial, ministerial and industry-level technological progress awards, becoming a global technical benchmark in the nitric acid industry.
The nitrate ammonium oxidation furnace delivered this time adopts the advanced Lamont furnace type, integrating the advantages of multiple furnace types and improving their shortcomings. It has achieved multiple optimizations in technical indicators and has significant advantages in improving efficiency, reducing energy consumption, and emphasizing environmental protection. During the research and development process, the Equipment Technology Company, relying on its technical strength, which includes the earliest, most comprehensive and highest-level special equipment (pressure vessels) qualification license in China, multiple proprietary technologies such as "Proprietary Technology for Manufacturing Flanges and Catalyst Frames of Nitric Acid Oxidation Furnaces" and "Proprietary Technology for manufacturing Water-cooled walls of nitric acid oxidation furnaces", as well as leading processing capabilities in the country, organized a technical team with Siding Company to carry out joint technological research and development. Solving manufacturing problems and achieving the organic integration of technology and manufacturing have provided a solid guarantee for the smooth delivery of the 1,200-ton-per-day nitrosamine oxidation furnace this time.
As a highly anticipated large-scale chemical project, the successful shipment of the nitroammonium oxidation furnace for the high-end new materials project of Zhejiang Petrochemical marks the continuous advancement of China National Chemical Corporation's "T+EPC" innovative model to a new level. The "integrated" development of proprietary technology and proprietary equipment has forged a stronger strength in the industry. Both sides will continue to focus on the development trends of large-scale, intelligent and green nitric acid equipment. Through joint research and development, manufacturing process innovation and optimization of full life cycle services, they will promote the breakthrough of domestic nitric acid technology to a higher level and provide a "Chinese solution" for the low-carbon transformation of the global chemical industry.