In the last week's 18th annual conference session of the National Urea Plant, Sichuan Golden Elephant Chemical Industry Group developed a new process of urea production caused great interest to delegates. This technology enables the production of traditional urea conversion rate of carbon dioxide increased by 5 percentage points to 73% over the same period the building of CO2 Stripping device compared to 30% savings over investment, steam consumption dropped to 950 kilograms / ton. Urea production by more than 10 companies on the spot and gold as the chemical industry was the outcome of docking.
　　According to Xu Li Jinxiang Chemical Industry Group deputy general manager of the beginning of introduction, using this new technology the construction of 1000 tons / day urea plant in February this year, as the chemical industry went into operation in gold. As of September 21, the device is running more than seven consecutive months, tons of urea consumption of ammonia aqueous solution than in the whole cycle of improved methods reduces 10 kilograms, 315 kilograms less steam consumption, power consumption reduction of 21 kilowatt hours and 60 cubic meters of recycled water to reduce the annual operating cost savings of more than 2,000 yuan. Compared with the CO2 Stripping, tons of urea ammonia consumption decreased by 5 kg, decreased consumption of 115 kilograms of steam, electricity consumption decreased by 5 kWh recycled water consumption decreased by 27 cubic meters of 8.73 million annual operating cost savings.
　　Of carbon dioxide conversion rate is an important process in urea production targets, a direct impact on steam consumption and urea production at home and abroad are studying how to further improve the conversion rate of carbon dioxide. Meanwhile, the safe production of urea is also a concern of business a long time, due to defects in the traditional process, China's urea production plant chemical explosion accidents have occurred.
　　In order to overcome these difficulties, gold as the chemical science and technology personnel in the new process of urea aqueous solution on the traditional full-cycle method is improved. Urea synthesis tower through the use of liquid-phase heat exchanger to raise the CO2 conversion rate and the safety factor, while eliminating the chemical urea reactor explosion; medium-pressure decomposition with pre-distillation and combination of heating methods, improving the medium-pressure decomposition rate, reduced investment; medium-pressure recovery of low-carbon ratio and multi-stage water absorption, ammonia evaporative condenser using ammonia cooler, exhaust gas with fine washed, reducing consumption and avoiding the exhaust explosion; low decomposition by the heat needed to heat the majority of supply, Low absorption by one-step condensation, improve concentration and facilitate the dimethyl system water balance.
　　It is reported that the process is applicable not only to the building of new devices of different sizes, but also to the transformation of the existing urea plant. (In Rou)