The MCA series HT-HP from MARCH PUMPEN offers corrosion-resistant, magnetic-drive chemical standard pumps for high-pressure and high-temperature applications in process design. These pumps were developed specifically for use in gas turbine power plants and are used in both retrofit and new projects to support the process of the gas turbine plants. The pumps must withstand high temperatures and pressures while at the same time ensuring high operational reliability and long service lives.
Pumps used
- MCA HT-HP – corrosion-resistant, magnetic-drive chemical standard pumps for high-pressure and high-temperature applications in process design
In gas turbine plants, recirculation pumps are required to control the mass flow through the preheater under various load cases and to limit the temperature gradient. These centrifugal pumps have to handle water at temperatures of up to 320 °C and system pressures of up to 210 bar.
To meet these demanding requirements, MARCH PUMPEN developed the casings of the leak-free, magnetic-drive chemical standard pumps of the MCA series in a special design for high PN pressure ratings and operating temperatures. This version was configured to the needs of Siemens Energy to ensure maximum operational reliability. The hydraulic performance data of the pump were carefully analysed and adjusted accordingly to meet the specific requirements of this application. Pressure-bearing parts such as the casing and containment shell were precisely designed and optimised by means of FEM simulation. The pump casing is made of solid super duplex steel, while the containment shell is machined from solid titanium grade 5 bar stock to withstand the high pressure and temperature requirements. Special plain bearings made of SSiC and magnet rotors made of CoSm, which are suitable for high temperatures, complete the comprehensive customer-specific design.
In the first three years of cooperation, 25 of these customer-specific pumps have already been successfully delivered and installed worldwide in countries such as Argentina, Iraq, the Dominican Republic, China, Taiwan, Brazil, South Korea, the Philippines, Italy and Hong Kong. The end operators of the gas turbine power plants are completely satisfied with the performance and reliability of these pumps.
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