Nitrogen nutrients reach more than 20% in compound fertilizer, which is called high nitrogen compound fertilizer. In the compound fertilizer, the nitrogen should be increased, so the amount of urea in the raw material must be increased. The low-grade fertilizer varieties such as ammonium chloride and ammonium sulfate cannot be matched. In the production of compound fertilizer, if the nitrogen content is more than 20%, then the urea dosage should reach more than 35% (because there is some nitrogen in the ammonium phosphate), and the current domestic production level of urea is limited to about 25%, such as urea. The amount of free water, the problem of free water precipitated by the reaction of urea and monoammonium, the high solubility of urea, the low melting point, the melting and sticking in the dryer, the formation of abnormal agglomerates, and even the formation of muddy mud, can not be normal production.
Our Wuxi Xinghua Compound Fertilizer Research Institute successfully increased nitrogen to 23% in compound fertilizer production, and the highest dosage of urea in the formulation reached 50%. It can continue normal production, and the sphericity and yield are all 15 The 15:15 formula is similar, creating a precedent for high-nitrogen production, filling the domestic gap.
Since the successful research in 1996, through the promotion in recent years, high-nitrogen production technology has been applied in dozens of large and medium-sized compound fertilizer plants across the country, and mature technology and superb technology have been well received by users. The successful research of high nitrogen production technology has great practical significance:
one. In China, Xinjiang, Guangdong and Other provinces only have urea manufacturers, but no ammonium chloride manufacturers. Nowadays, with high nitrogen production technology, urea can be used as a nitrogen source, and local materials can be taken to avoid long-distance purchase of ammonium chloride.
two. Some factories producing urea, and some compound fertilizer production workshops are also built. It can use the urea of ​​the factory for deep processing, increase the added value, produce high-content compound fertilizer, improve the grade of its own products and in the market. Competitiveness.
three. In the northwestern part of China, most of them are saline-alkali land. It is not advisable to apply double-chlorine fertilizer consisting of ammonium chloride and potassium chloride. Urea can now be used as a nitrogen source to produce a neutral, weakly acidic compound fertilizer that prevents the soil from continuing to alkalinize.
four. It is also possible to develop special fertilizers for special economic crops that avoid chlorine, such as fruits, sugar cane, sugar beets, and tobacco.
5. High-nitrogen production technology can increase nitrogen, so that the fertilizer effect of compound fertilizer is significantly improved, and the scientific formula proposed for agrochemical services is implemented, providing a production route.
six. Since 1999, compared with the price of nutrient, the urea nitrogen has been lower than the price of ammonium chloride, which reduces the cost of compound fertilizer and enhances market competitiveness.
High-nitrogen formula is a difficult technology to master in the production of compound fertilizer. Because of its low decomposition temperature and high solubility, urea is very sensitive to process indexes such as moisture and temperature, and must be taken seriously in operation.
Our Wuxi Xinghua Compound Fertilizer Research Institute successfully increased nitrogen to 23% in compound fertilizer production, and the highest dosage of urea in the formulation reached 50%. It can continue normal production, and the sphericity and yield are all 15 The 15:15 formula is similar, creating a precedent for high-nitrogen production, filling the domestic gap.
Since the successful research in 1996, through the promotion in recent years, high-nitrogen production technology has been applied in dozens of large and medium-sized compound fertilizer plants across the country, and mature technology and superb technology have been well received by users. The successful research of high nitrogen production technology has great practical significance:
one. In China, Xinjiang, Guangdong and Other provinces only have urea manufacturers, but no ammonium chloride manufacturers. Nowadays, with high nitrogen production technology, urea can be used as a nitrogen source, and local materials can be taken to avoid long-distance purchase of ammonium chloride.
two. Some factories producing urea, and some compound fertilizer production workshops are also built. It can use the urea of ​​the factory for deep processing, increase the added value, produce high-content compound fertilizer, improve the grade of its own products and in the market. Competitiveness.
three. In the northwestern part of China, most of them are saline-alkali land. It is not advisable to apply double-chlorine fertilizer consisting of ammonium chloride and potassium chloride. Urea can now be used as a nitrogen source to produce a neutral, weakly acidic compound fertilizer that prevents the soil from continuing to alkalinize.
four. It is also possible to develop special fertilizers for special economic crops that avoid chlorine, such as fruits, sugar cane, sugar beets, and tobacco.
5. High-nitrogen production technology can increase nitrogen, so that the fertilizer effect of compound fertilizer is significantly improved, and the scientific formula proposed for agrochemical services is implemented, providing a production route.
six. Since 1999, compared with the price of nutrient, the urea nitrogen has been lower than the price of ammonium chloride, which reduces the cost of compound fertilizer and enhances market competitiveness.
High-nitrogen formula is a difficult technology to master in the production of compound fertilizer. Because of its low decomposition temperature and high solubility, urea is very sensitive to process indexes such as moisture and temperature, and must be taken seriously in operation.
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