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PetroChina Sinopec generally uses corrosion-resistant cam rotor pumps to transport oily wastewater. Oily wastewater mainly comes from petroleum, petrochemical, steel, and coking. Except for heavy tars with a relative density of 1.1 or more, the remaining relative densities are less than 1. The oily substances contained in oily wastewater, in the petroleum and petrochemical industry, mainly include natural petroleum, petroleum products, tars and their fractions.
The pollution of water bodies from oily wastewater is mainly petroleum and tar. The concentration of oil in wastewater discharged from different industrial sectors varies widely. For example, wastewater generated during the refining process has an oil content of about 150 to 1,000 mg / L, a tar content of about 500 to 800 mg / L in coking wastewater, and a tar content of about 2,000 to 3000 mg / L in the wastewater from a gas generating station. Therefore, the treatment of oily wastewater should first use an oil trap to recover oil slicks or heavy oil. The treatment efficiency is 60% to 80%, and the oil content in the effluent is about 100 to 200mg / L. It is difficult to emulsify and disperse oil in wastewater. For this reason, Rohde corrosion-resistant cam rotor pump is used to prevent or reduce the emulsification phenomenon, and the process application is oily wastewater lifting pump .
Corrosion-resistant cam rotor pumps are used to pump oily wastewater, and the pumping station of the oil trap is widely used. In the PetroChina Qingdao Petrochemical, Guangxi Petrochemical, CNOOC Huizhou Refinery and other places, Rohde corrosion-resistant cam rotor pumps are used.
Features of anti-corrosion cam rotor pump: First is anti-corrosion, insoluble in waste oil, and secondly, wear resistance, fine particles will not hinder the suction of the medium, and again strong self-priming ability, 6 meters high oil trap, dry The mounted Rohde cam rotor pump can easily pump oily waste water to the ground.
During the production process, the petroleum and petrochemical industry requires attention to reduce the emulsification of oil in wastewater, and to minimize the number of times the pump is used to raise wastewater during the treatment process, so as not to increase the degree of emulsification. The efficiency of the cam rotor pump can reach more than 90%. The reliability and durability of the product reduce the use cost of the pump, and at the same time, reduce the emulsification of oily wastewater in terms of treatment effect.
In the CNPC system, customers use cam rotor pumps compared to the purchase price of pure equipment. They pay more attention to the comprehensive use cost of cam rotor pumps during their service life and are more satisfied. Therefore, they use corrosion-resistant cam rotor pumps to pump oily wastewater.
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