Shandong Haihua Hualong Ammonium Nitrate Co., Ltd. 100,000 tons/year concentrated nitric acid project was completed and put into production. Shortly after being put into production, the quality of dilute nitric acid and concentrated nitric acid reached the requirements of GBT337.2 and GBT337.1, respectively, setting a new record in the construction of similar projects across the country. Since then, this annual output of 160,000 tons of sodium nitrate, sodium nitrite, the world's largest salt production company, has used its own production of high-quality nitric acid.
The project adopts the "double pressurization" method of dilute nitrate production and the concentration of nitric acid and magnesium, and it has advanced technology and energy saving and environmental protection. The energy utilization of the entire nitric acid plant is reasonable, and the amount of heat absorbed by the reaction is removed by the amount of vaporization of liquid ammonia, so that the absorption of nitrogen oxide gas is performed under high pressure and low temperature. The medium-temperature recovery of tail gas energy is used to achieve an economical match between the motive power (steam turbine) of the compressor unit and the exhaust gas turbine. The exhaust turbine can recover approximately 60% of the compression power. Absorption tower design adopts domestic and overseas longevity for improvement to ensure high absorption rate, finished product acid concentration reaches 58-62%, and exhaust gas does not need any treatment, NOx concentration is less than 200PPM;
The ammonia-air mixture distribution device in the ammonia oxidation furnace adopts the technology of the French GP company, and the platinum network adopts the new platinum-rhodium binary knitting network. These two measures increase the oxidation rate of ammonia and reduce the platinum consumption. The total ammonia consumption is only 283 kg/ton acid, and the platinum-ruthenium double knit net can save more than 3 million yuan compared with the Sanyuan plain weaving net.
After the project is put into production, Hualong Nitrate will increase its product varieties to include sodium nitrate, nitrous acid, concentrated nitric acid, dilute nitric acid, synthetic ammonia, and methanol. Various products can adjust production ratio according to market demand, and achieve diversification of product structure. Further enhance the company's ability to withstand market risks.
The project adopts the "double pressurization" method of dilute nitrate production and the concentration of nitric acid and magnesium, and it has advanced technology and energy saving and environmental protection. The energy utilization of the entire nitric acid plant is reasonable, and the amount of heat absorbed by the reaction is removed by the amount of vaporization of liquid ammonia, so that the absorption of nitrogen oxide gas is performed under high pressure and low temperature. The medium-temperature recovery of tail gas energy is used to achieve an economical match between the motive power (steam turbine) of the compressor unit and the exhaust gas turbine. The exhaust turbine can recover approximately 60% of the compression power. Absorption tower design adopts domestic and overseas longevity for improvement to ensure high absorption rate, finished product acid concentration reaches 58-62%, and exhaust gas does not need any treatment, NOx concentration is less than 200PPM;
The ammonia-air mixture distribution device in the ammonia oxidation furnace adopts the technology of the French GP company, and the platinum network adopts the new platinum-rhodium binary knitting network. These two measures increase the oxidation rate of ammonia and reduce the platinum consumption. The total ammonia consumption is only 283 kg/ton acid, and the platinum-ruthenium double knit net can save more than 3 million yuan compared with the Sanyuan plain weaving net.
After the project is put into production, Hualong Nitrate will increase its product varieties to include sodium nitrate, nitrous acid, concentrated nitric acid, dilute nitric acid, synthetic ammonia, and methanol. Various products can adjust production ratio according to market demand, and achieve diversification of product structure. Further enhance the company's ability to withstand market risks.
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