As is known to all, petroleum and chemical industry is the energy industry, holds a great proportion in the national economy of our country. With the rapid development of our economy, for oil and oil products such as gasoline, diesel, kerosene, oil demand continues to increase, and oil three synthetic materials such as synthetic resin, synthetic rubber, synthetic fiber requirements will also be greatly increased, certainly will will boost demand increases, petrochemical pump the development prospects of China's petrochemical pump very well.
Petrochemical pump
Petrochemical pump
Petrochemical pump demand trend higher
Petrochemical pump is one of the largest rotating equipment in the petrochemical production unit dosage, the main is to put all kinds of liquid medium such as crude oil, refined petroleum products, chemical raw materials, intermediate products and finished products in transmission. According to statistics, a medium-sized refinery has more than 1000 pump, and more than 10% of dry screw vacuum pump. A petrochemical plant has more than 2000 pump, and more than 12% of dry screw vacuum pump. These pump driven by a motor in general. Petrochemical pump medium pressure by negative pressure to 300 mpa, temperature from 140 ℃ below zero to nearly 500 ℃ above freezing, some medium thick, some still containing solid particles, most corrosive medium. Petrochemical pump is one of the most energy consumption equipment, pump power consumption accounts for about 50% of all electrical or so.
Petrochemical pump localization "difficult geometry"
China petrochemical pump through years of development, especially since the reform and opening up the introduction of foreign advanced technology, from the technical performance of the product and improve product quality has a bigger development. But compared with international top petrochemical pump production, there is a larger gap. Mainly includes the following three aspects:
A is the difference in degree of standardization, seriation and generalization of pump, the pump manufacturer form series, component standardization and interchangeability is low, lack of unified standards, product specifications, also can't satisfy the needs of the development of the petrochemical.
Second, poor quality and reliability, mainly because of domestic varieties of corrosion resistant material less or improper material ***ion and the machining accuracy is not high. In addition the seal life of the pump is low, less varieties. Mechanical seal life abroad generally can be up to 2 years, the domestic petrochemical pump has yet to reach this level.
Three pump efficiency is low, due to domestic pump design hydraulic model is poorer, the machining accuracy is not high, the pump efficiency is generally lower than that in foreign nations by 2% ~ 2%. So there are many chemical process pump had to be imported from abroad.
Its new road, and a new chapter of domestic petrochemical pump
In recent years many domestic pump factory introduce advanced technology from abroad, according to international standard production chemical process pump, make the petrochemical pump technical level has greatly improved. With the continuous development of technology and scale of petrochemical industry in the future, more and more high to the requirement of petrochemical pump. In addition to continue to improve the quality of conventional pump, expand specifications varieties, especially in pump forhandling corrosive material requirements is more and more big, such as ethylene production of ethylene cracking device, PE and pp device; In chemical fiber production device PTA (purified terephthalic acid (PTA)), polyester and polyester spinning device, acrylonitrile and fat to device, etc. Therefore, to development of corrosion resistant pump technology. The corrosion resistance of the pump material is still a large number of black metal materials, high nickel alloy material, in the future for more use of titanium, zirconium, tantalum and other excellent corrosion resistant materials, and the development of non-metallic materials such as ceramic, glass fiber reinforced plastic and materials such as graphite.