Ethylene pump

Ethylene is a fundamental product in the petrochemical industry. Its output and production technology represent the level of development of a country's petrochemical industry. The ethylene cracking unit is a device for high-temperature cracking of petroleum hydrocarbons to produce high-purity ethylene and propylene. After high-temperature cracking of petroleum hydrocarbons, the gas mixture obtained has complex components. This requires separating ethylene and propylene from the gas mixture. At present, the mainstream separation process in the world is cryogenic separation method.

The so-called cryogenic separation refers to the use of the boiling point differences of each component in a gas mixture, and the use of low-temperature distillation to separate each component one by one. The lowest operating temperature in this separation process is close to -180 ℃, so it is called cryogenic separation technology. This technology is currently the most widely used separation technique in the ethylene industry. Its advantages are: large material processing capacity, reasonable energy utilization, good separation effect, and the purity of ethylene and propylene products can reach over 99.9%. The cryogenic separation technology has advanced economic indicators and is suitable for large-scale ethylene production plants.

In the process of cryogenic separation, the circulation and pressurization of cryogenic liquids such as ethylene and ethane require cryogenic pumps. At present, the ethylene cryogenic pumps in domestic ethylene cracking units are all imported equipment from abroad, and the domestication rate is almost zero. In recent years, there has been a strong demand for liquid ethylene monomers in China, and Sinopec has built several sets of ethylene monomer loading facilities to meet market demand. The ethylene monomer loading device uses refrigeration technology to convert high-pressure liquid ethylene (17.6x10'Pa, -33 ℃) into atmospheric pressure, low-temperature liquid ethylene (-104 ℃) for road transportation. Its product delivery pump operates similarly to the ethylene cryogenic pump in the ethylene cryogenic separation unit.

ZL type vertical axial flow centrifugal pumps features as low head, big capacity and low
speed. Pumped liquid is clean water or physical and chemical property similar to water,
temperature must be lower than 50 ℃ .Main applications are for Power Station water
circulation, Urban water supply and drainage, dock water level control, hydraulic
engineering and farmland irrigation and so on.
Performance Range:
Capacity （m3/h):1020~39350
Head (m): 2~15
Power(kw): 75~3200
Speed(rpm): 245~980