The service of the self-sealed valve in Urea Plant with ammonia technic was introduced, and the cause of the seal leakage was analyzed, the solution of local maintenance was pointed out.
介绍了自密封阀在氨汽提尿素装置中的应用情况，对其泄漏原因进行了分析；并提出了具体维修方案。
3
The retrofit is given of the prilling basket, second stage evaporation separator and control valve for pressure in the hydrolysis system in a urea unit based on the ammonia stripping process.