Ghadir Petrochemical Company in Mahshahr, Khuzestan Province, has indigenized canned motor pumps with the help of domestic knowledge-based companies.
The equipment, which used to be imported from Japan at a high cost, are now manufactured locally at 16% of the cost of the foreign counterpart, the National Petrochemical Company’s news website reported.
In refineries and petrochemical plants, centrifugal pumps are among the most common machines. Great importance is attached to their operational reliability and functional efficiency. In view of the difficulties and costs associated with the maintenance of mechanical seals, plant designers and operators have increasingly recognized the advantages of the canned motor pump.
The focus of a canned motor pump is on the motor. In contrast to normal centrifugal pumps, the rotating part of the motor is on the same shaft as the pump’s hydraulics. This rotor is completely surrounded by a hermetically sealed can, which separates the rotor space from the stator of the canned motor. Since the motor is an integral part of the pump, canned motor pumps are very quiet.
In addition to the sealed can, the pressure-proof motor casing represents a second safety sleeve. Even if the fluid handled escapes from the can in case of disaster, it is prevented safely from escaping uncontrolled into the environment.
Thanks to this clever design, shaft seals such as the normal mechanical seal are superfluous and there can be no leaks.
Due to their design, canned motor pumps enable higher flow rates, heads and pressures as compared to other centrifugal pumps. Their temperature sensitivity is also much greater, which also enables special applications in the high- or low-temperature ranges.
Canned motor Pumps have many advantages over other types, including their compact size, high efficiency and low maintenance requirements.
They are often used in applications where it is not possible or practically tough to access for maintenance or repairs.
They are typically used with abrasive or corrosive fluids and can be found in a variety of industrial applications. Besides handling toxic and hazardous liquids, they also withstand extreme operating conditions.
PVC Production Record
Ghadir Petrochemical Company increased the production of polyvinyl chloride (PVC) by 25% in the first half of the current Iranian year (March-September) compared with the same period of last year.
The complex produced 73,200 tons of PVC during the six-month period, which was a record for the company.
The company's feedstock is chlorine and ethylene. Ethylene is supplied via pipeline in western Iran and chlorine is supplied by Arvand Petrochemical Company.
Established over 15 hectares, the complex also produces vinyl chloride monomer with an annual capacity of 150,000 tons.
The company’s products are used in manufacturing various types of pipes, hoses, electrical insulation, doors, window frames, cabinets and automotive parts.
Plans are underway to further increase the output of PVC unit and produce new grades of PVC.
PVC is the world's third-most widely produced synthetic plastic polymer (after polyethylene and polypropylene) with an annual output of about 40 million tons.
