Gas compressors have new measures to reduce reliability

US Anrun Long recently introduced new compressor oils at the 2007 Asia PTC show, which helps minimize downtime and maximize return on investment.

Not only has new lubricants become the focus of recent energy-saving and consumption-reducing products, industry insiders are discussing how compressor equipment can reduce energy consumption by further improving its reliability. Compressors are one of the key equipments in the petrochemical industry. Most petrochemical plants have gas compressors. The common types of compressors are centrifugal compressors and reciprocating compressors.

Centrifugal Compressors The international centrifugal petrochemical compressors are developing in the direction of large-scale, energy-saving and high-reliability. The focus of technology development has shifted to improving product reliability and operating efficiency, reducing energy consumption, and improving production processes.

With the expansion of petrochemical industry production scale, users are more concerned about the energy consumption and efficiency of compressors. The ternary flow theory has been applied to the design of stationary components such as blades and diffusers of impellers in order to achieve the highest unit efficiency; The compressor with parameterized working characteristics has been continuously developed. The matching between the compressor stages and the matching technology of the whole machine will be solved. The early fault diagnosis and control technology and noise control and control technology of the equipment are gradually being used. Thanks to the high-efficiency ternary flow impeller and fixed components, the overall efficiency of the compressor has been as high as 88%, and the operation is stable. The control level of the detection, alarm and interlocking shutdown system is obviously improved, and the device can be guaranteed for 3 to 4 years. Operating cycle.

At present, Shenyang Blower (Group) Co., Ltd. is developing a cracking gas compressor for Tianjin 1 million tons/year ethylene project with an inlet flow rate of 341,494 standard cubic meters per hour and a shaft power of 51,106 kW. Shaanxi Blower (Group) Co., Ltd. introduced the axial compressor technology of Sulzer, Switzerland, and successfully designed and manufactured the main and standby fans for the catalytic cracking unit, which was manufactured by Dalian Petrochemical Company's 3.5 million tons/year catalytic cracking unit. The main fan is the largest axial compressor in the domestic petrochemical plant, with a flow rate of 300,000 standard cubic meters per hour and a power of 40,000 kilowatts.

Reciprocating Compressors Internationally, the rapid development of refining, ethylene, fertilizer and Other industries has greatly stimulated the design and manufacturing level of reciprocating compressors. The maximum piston load of large reciprocating compressors has reached more than 1,250 kN, and the shaft power has exceeded 1 Ten thousand kilowatts.

At present, the development direction of reciprocating compressors is: large capacity, high pressure, compact structure, low energy consumption, low noise, high efficiency, high reliability, and strong exhaust gas purification capability. The product design uses compressor thermodynamics, dynamics calculation software and compressor working process simulation software to improve the calculation accuracy. The comprehensive simulation model is used to predict the performance parameters of the compressor under actual working conditions, and the new product development is improved. Success rate. Some companies are constantly developing new types of air valves that operate under varying operating conditions, resulting in a significant increase in valve life. In addition, the electromechanical integration of compressor products has been strengthened, the computer automatically controls and automatically displays various operating parameters to achieve optimized energy-saving operation status, and optimizes online operation, abnormal display of operating parameters, alarm and protection.

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