Prospects for the development of petrochemical pumps

The pump used in the petrochemical industry is the largest rotating equipment used in petrochemical production plants. It transports various liquid media such as crude oil, refined oil, chemical raw materials, intermediate products and finished products to other places like the human heart transports blood.

After many years of development, China's petrochemical pumps have relatively complete varieties. In particular, many foreign advanced technologies have been introduced since the reform and opening up. Technical performance and product quality have greatly improved. In general, however, there are still many gaps between domestic pump products and foreign ones: First, the standardization, serialization, and generalization of pumps are poor. Because each manufacturer has its own series, the standardization and interchangeability of parts are low, and there is a lack of uniform standards. The product specification and model also cannot meet the needs of the development of the petrochemical industry. The second is poor quality and reliability. This is mainly due to the fact that there are few types of corrosion-resistant materials or improper materials in the country, and the processing accuracy is not high; in addition, the sealing life of the pump is low and the variety is small. The life of mechanical seals in foreign countries can generally reach two years or so, and domestic petrochemical pumps have not yet reached this level. The third is the low efficiency of the pump. Because the domestic pump design model is poor and the machining accuracy is not high, the pump efficiency is generally 2% to 3% lower than that of foreign countries. Therefore, many chemical process pumps have to be imported from abroad.

The development direction of Sinopec's pumps in the next five years will be large-scale, high-speed, mechanical and electrical integration, as well as complete sets of products, standardization, serialization and generalization. In particular, the production technologies of high-temperature pumps, cryogenic pumps, cryogenic pumps, precision metering pumps, anti-corrosion pumps, conveying viscous mediums, and pumps with solid particles and canned pumps will rapidly develop, and the demand will increase substantially. Tens of thousands of tons of refinery equipment and one million tons of ethylene equipment in China will open up a vast market for the construction of new, modified or expanded petrochemical pumps. In addition, various types of pumps currently in operation at various refineries in the country have become obsolete and are in urgent need of renewal and transformation.

Therefore, the stainless steel pump valve in our country will have great room for development is enormous, will not be affected by China's current pump valve volume, and the stainless steel pump valve will gradually replace some of the previous material of the other pump Valves for industrial and agricultural and social life services.

In the future, with the continuous development of petrochemical industry technology and scale, the requirements for petrochemical pumps are getting higher and higher. In addition to continuously improving the quality of conventional pumps and expanding the variety of specifications, the demand for pumps for conveying corrosive materials is increasing. Large, such as ethylene cracker in ethylene production, polyethylene equipment and polypropylene equipment, PTA equipment in the production of chemical fiber (pure terephthalic acid), polyester equipment and polyester spinning device, etc., so we must strive to develop corrosion-resistant technology.

The stainless steel pump has excellent characteristics such as corrosion resistance, high strength, light weight and long service life. In recent years, stainless steel pumps have been widely used in shipbuilding, rail vehicles and other transportation industries. With the development of machinery manufacturing, stainless steel pumps will have a broader application prospects. However, the growth rate of consumption has gradually slowed down, and the ultra-high-speed development stage with an average annual growth rate of over 30% has changed into a steady development stage with a current growth rate of 6.43%.