The reporter learned from the Hefei Institute of Physical Science.CAS, by the Institute of biotechnology and Henan xinlianxin fertilizer limited company together, online first domestic urea product quality detection device recently successfully developed and put into production and application. The device is placed above the urea conveyor belt, can accurately monitor the content of urea urea, shrinkage of two urea, moisture.

Product structure of China's chemical fertilizer with nitrogen fertilizer, accounting for 60% of the total nitrogen fertilizer, and more than 60% urea. In the production process of urea product, high temperature will make the shrinkage of two urea, when the shrinkage of two urea at higher concentrations inhibited the growth of crops, the urea soluble in water, easily absorb moisture caking, therefore the accurate measurement of urea, shrinkage of two urea, three moisture content is difficult, but if the precision is not enough urea, and very difficult to guarantee the quality of the products. The traditional method for the determination of complex operation, time-consuming, consumption of chemical reagents of high cost, at the same time is not conducive to environmental protection, so the development of urea product quality quick detection method is important.

The researchers based biotechnology in using near infrared diffuse reflectance spectroscopy quantitative analysis of urea, urea reduction technology to build the model of two urea and water content, developed the device in the online detection of urea, urea production line shrinkage of two urea, moisture content of urea quality index. Through the debugging and modification, overcomes the industrial field vibration, fertilizer mobile speed influence on measurement accuracy, realize the online product quality of urea detection target.