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High-pressure ammonium pump type of choice
High pressure ammonium pump also has reciprocating piston pump, high-speed part of the flow pump and multi-stage centrifugal pump in three types to choose from. Before the 1970s, the world's urea plant in the high-pressure ammonium pump is basically a reciprocating pump, pipe pump, although the high efficiency, but the cylinder by high pressure, pulsating pressure and the strong corrosion of ammonium liquid, prone to fatigue corrosion In addition, the complicated structure, wearing parts and maintenance costs are higher. Since the 1970s, the high-pressure part of the ammonium pump using high-speed part of the pump, with two impeller can reach 4000m high lift, and impeller and pump size is small, high working pressure, the pump diameter, wall thickness Thinner, reducing the amount of 316L stainless steel. Therefore, the high-speed part of the pump has the advantages of simple structure, small size, light weight, small pump base. Especially when used as a high-pressure ammonia pump compared to when used as high-pressure ammonium pump shaft power reduced by about half, the use of centrifugal instead of reciprocating can consume less shaft power, high pressure ammonia pump available steel, high pressure ammonium pump Use 316L stainless steel, so the choice of high-speed pump than reciprocating pump can save more investment, which is the high-pressure ammonium pump than the high-pressure ammonia pump earlier (1969), more use of high-speed part of the pump. As for the production capacity is less than the daily output of 750t urea plant, due to the pump flow is small, with centrifugal efficiency is too low, high operating costs, so the choice of reciprocating pump is appropriate. Today's latest valid order information free to send! Morning latest buyers information free to send! Punch grab Rob here! Two kinds of urea production capacity of the device, the reciprocating and centrifugal high-pressure ammonium ammonia technical and economic indicators shown in the table urea production capacity / (t / day) 1100 1700 Pump Centrifugal reciprocating centrifugal reciprocating design flow / ( m3 / h) 38 38 60 60 Design differential pressure / MPa 14.1 14.1 14 14 Shaft power (at design flow rate) / kW 345 Reciprocating power saving / kW 82 101 Estimated cost per unit â‘ / Million 25.6 26.44 28 31 Estimated annual maintenance fee / million US $ 0.5 3 0.55 3.3