Urea Used in Vehicles

Xiamen Ditai Chemicals Co., Ltd. is one of the most reliable manufacturers and suppliers of urea used in vehicles in China. Welcome to buy high quality chemical products at competitive price from our factory.

UREA

urea used in vehicles property:

Urea, also known as carbamide, with the chemical formula CH4N2O, is an organic compound composed of carbon, nitrogen, oxygen, and hydrogen. It is a white crystal and is a product of animal protein metabolism.

urea used in vehicles Preparation method:

Mix purified ammonia with carbon dioxide at a molar ratio of 2.8-4.5 and enter the synthesis tower. The pressure inside the tower is 13.8-24.6 MPa, the temperature is 180-200 ℃, and the residence time of the reaction materials is 25-40 minutes to obtain a urea solution containing excess ammonia and ammonium carbamate. After depressurization and cooling, the separated urea solution is evaporated to above 99.5%, and then granulated in the granulation tower to obtain the finished urea product.

urea used in vehicles Purpose:

Urea is a high concentration nitrogen fertilizer, a neutral and quick acting fertilizer, and can also be used to produce various compound fertilizers. No harmful substances remain in the soil, and long-term application has no adverse effects. Animal husbandry can be used as feed for ruminants. However, excessive temperature during granulation can produce a small amount of biuret, also known as biuret, which has an inhibitory effect on crops. China stipulates that the urea content for fertilizers should be less than 0.5%. When the urea content exceeds 1%, it cannot be used as seed fertilizer, seedling fertilizer, or foliar fertilizer, and the urea content during other application periods should not be too high or too concentrated.

Urea is an organic nitrogen fertilizer that can only be absorbed and utilized by crops after being hydrolyzed into ammonium carbonate or ammonium bicarbonate by urease in the soil. Therefore, urea should be applied 4-8 days before the crop's fertilization period.

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