Production system of aqueous urea solution for motor vehicles

Abstract

The invention belongs to the technical field of urea production, and concretely discloses a production system of an aqueous urea solution for motor vehicles. The production system of the aqueous urea solution for motor vehicles is characterized in that raw water adopts municipal tap water or underground water, urea adopts generally agricultural or industrial urea, and the aqueous urea solution for motor vehicles is prepared through preparing highly pure water, dissolving common urea and purifying a urea solution. The commercial price of the common industrial and agricultural urea is 1500 yuan/t, and the is remarkably lower than that pure urea having a high price, so the cost taken in the production of every ton of the aqueous urea solution for motor vehicles by using the production system of the aqueous urea solution for motor vehicles is 500 yuan or above lower than the cost taken in the production of every ton of the aqueous urea solution for motor vehicles by using a traditional highly-pure urea preparation technology, the production cost is remarkably reduced, and the running cost of every ton of the aqueous urea solution for motor vehicles is 550 yuan or below.

Description

technical field [0001] The invention relates to the technical field of urea production, in particular to a vehicle urea solution production system. Background technique [0002] The urea solution for vehicles can convert the nitrogen oxides in the vehicle exhaust into harmless nitrogen and water, which is energy-saving and environmentally friendly, and makes the vehicle exhaust meet the national emission standards. The reaction unit of urea solution for vehicles, referred to as the SCR system, is mandatory for diesel vehicles of the National IV standard. In order to meet the National IV emission standards, it is necessary to choose the appropriate SCR technology for the treatment of vehicle exhaust. At present, with the full implementation of the National IV emission standards, the urea for vehicles, which is an important part of the exhaust gas treatment of the National IV standards, has a large gap and cannot meet the growing needs of the National IV standard vehicles. C...

AI Technical Summary

Problems solved by technology

The disadvantage of the traditional production process of urea solution for vehicles is high cost. The unit price of high-purity urea is more than 3,500 yuan / ton. Calculated that 3 tons of urea solution for vehicles can be produced per ton of high-purity urea, the price of urea solution for vehicles per ton is at least More than 1150 yuan, the price is expensive

Images