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Not only new lubricants have become the focus of recent energy-saving and consumption-reduction products, industry players are discussing how compressor equipment can achieve lower energy consumption by further increasing its reliability. Compressor is one of the key equipments in the petrochemical industry. Most petrochemical plants have gas compressors. Common types of compressors include centrifugal compressors and reciprocating compressors.
Centrifugal compressor
The international petrochemical centrifugal compressors are being developed toward large-scale, energy-saving and high-reliability. The focus of technological development has shifted to improving product reliability and operating efficiency, reducing energy consumption, and improving production process methods.
With the expansion of the scale of petrochemical industry, users are more concerned about the energy consumption and efficiency of the compressor. The three-dimensional flow theory has been applied to the design of stationary components such as blades and diffusers of the impeller in order to achieve the highest unit efficiency; The compressors with parameterized operating characteristics have been continuously developed. Compressor interstage matching and complete machine matching technologies will be solved. Early equipment fault diagnosis and control technology, noise control and control technologies are being gradually used. Due to the adoption of high-efficiency ternary flow impellers and fixed components, the overall efficiency of the compressor has been as high as 88%, and the operation is stable. The detection, alarm, and interlocking shutdown system control levels have been significantly improved, and the device can be guaranteed for 3 to 4 years. Running cycle.
At present, Shenyang Blower (Group) Co., Ltd. is developing a cracked gas compressor for Tianjin's 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 kilowatts. Shaanxi Blower (Group) Co., Ltd. introduced the Sulzer axial flow compressor technology from Switzerland and successfully designed and manufactured the main and auxiliary fans for catalytic cracking units, among which the 3.5 million ton/year catalytic cracking unit of Dalian Petrochemical Company was manufactured. The main fan is currently the largest axial compressor in domestic petrochemical plants, with a flow rate of 300,000 standard cubic meters per hour and a power of 40,000 kilowatts.
Reciprocating compressor
The rapid development of international industries such as oil refining, ethylene and chemical fertilizers has greatly stimulated the design and manufacture of reciprocating compressors. The maximum piston load of large-scale reciprocating compressors has reached more than 1,250 kilonewtons and the shaft power has exceeded 10,000 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. Compressor thermodynamics, dynamics calculation software and compressor working process simulation software are applied to the product design to improve the accuracy of the calculation. The comprehensive simulation model is used to predict the performance parameters of the compressor under actual operating conditions, and the new product development is improved. Success rate. Some companies continue to develop new types of valves that operate under changing operating conditions, which greatly increase the service life of valves. In addition, the mechanical and electrical integration of the compressor products has been strengthened. The computer automatically controls and automatically displays various operating parameters to optimize the energy-saving operation status, and optimize online operation, abnormal display of operating parameters, and alarm and protection.
Shenyang Gas Compressor Co., Ltd. has introduced reciprocating compressor design and manufacturing technology from Germany's Borzig, applying its products to the oil refining and chemical industry, and has made breakthroughs in the development of large and medium-sized reciprocating compressors.
In 1990, the company successfully developed a series of 4M50 large-scale hydrogen reciprocating compressors that meet the current international standards. In 1998, the company successfully developed the 4M80 series of large-scale hydrogen compressors, with a compressor flow rate of 34,000 standard cubic meters per hour, a piston pressure of 800 kilonewtons, an outlet pressure of 19 megapascals and a shaft power of 4,000 kilowatts, for Maoming Petrochemical 200 Million / year residual oil hydrodesulfurization device. The three-row labyrinth sealed reciprocating compressor developed by Tianhua Machinery Research Institute in 2006 and Wuxi Compressor Co., Ltd. has a displacement of 1707 cubic meters per hour and an inlet/outlet pressure of 0.1034 to 1.127 megapascals. Qilu Petrochemical 100,000 tons/year polyethylene plant.
Gas Compressor: Reduces Consumption and Has New Tips to Improve Reliability
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