Zhejiang nitrogen sealed pneumatic valve share of urea plant, synthetic tower pressure regulating characteristics of pneumatic valve

aqueous solution total cycle method of urea plant, synthetic tower pressure regulating system is one of the most important since the adjustable system. Synthetic tower pressure regulating pneumatic valve installed in synthetic tower exports. The synthetic tower process is medium all need through the pressure regulating pneumatic valve pneumatic valve flow decomposition of medium pressure system. The pressure regulating pneumatic valve has the following characteristics:
and medium high speed and large swings;
, urine easy crystallization and not bypassed pneumatic valve;
, pneumatic valve, pressure difference before and after high, nearly MPa;
, on-line maintenance risk big, the pneumatic valve may greatly switch, can cause synthetic tower overpressure, overpressure or medium voltage system cause a wide range of process fluctuation and even cause an accident.