With the wide application of screw compressors, lubricant coking from improper maintenance is increasingly common. Coking reduces efficiency and may cause rotor seizure, leading to major economic losses. This article analyzes the physicochemical mechanisms of coking, identifying oxidation, metal catalysis, water contamination, and residual old oil as direct triggers. However, the root causes are human factors – including insufficient professionalism of oil producers and user errors such as mixing oils, using inferior substitutes, and ignoring accessory quality. The article provides systematic prevention measures: using specified oil, cleaning the oil circuit before each change, selecting high-quality air filters (with simple test methods), and maintaining unobstructed cooling systems. This paper offers maintenance personnel actionable solutions to eliminate coking at its source and ensure long-term stable compressor operation.

Driven by the industrial Internet and China's Industry 4.0 strategy, the air compressor industry is undergoing profound transformation. Despite previous exploratory innovations in the screw compressor market with unsatisfactory effects, ten core trends have emerged: energy conservation and environmental protection as the eternal mainstream, widespread popularization of modular design, intelligent upgrading to catch up with international levels, optimized human-computer interaction, extensive robot application, in-depth integration of industrialization and informatization, polarized market development, refined application scenarios, mechatronics transformation, and strengthened R&D of key components. These trends will drive the industry towards high-end, intelligent and green development.

With the global energy structure shifting towards cleanness, the natural gas industry has broad development space. As the core power equipment in the entire natural gas production process, natural gas compressors are indispensable, running through key links such as gas field extraction, gathering, long-distance transportation and gas storage peak shaving. This article elaborates on the application scenarios and core roles of various natural gas compressors, introduces the application status of mainstream models, highlights the advantages of water-lubricated oil-free screw natural gas air compressors, and points out that efficient, energy-saving and safe natural gas compressors will support the high-quality development of the natural gas industry.

Process gas compressors are the core power equipment for material transportation, gas boosting, and cycle separation in petrochemical plants. They directly determine production continuity, energy efficiency, and operational safety. Under the trend of large-scale and low-carbon development, compressor selection has evolved from simple parameter matching to a comprehensive decision including technical route, working condition adaptability, life-cycle cost, and green energy efficiency. This article systematically summarizes the main compressor types, key selection factors, and strategies for the petrochemical industry, and introduces centrifugal process gas compressor solutions for large-scale petrochemical facilities.

In the oil and gas industry, reciprocating compressors are classified into different technical systems based on design, manufacturing and testing standards. API 618 and API 11P are two dominant specifications that serve separate scenarios: downstream refining & chemical processing, and upstream production & gathering, respectively. They differ greatly in operating conditions, installation, drive type, cooling system and structure. Meanwhile, API 11P has been updated and gradually replaced by the international standard ISO 13631. This article summarizes the application scope, core characteristics and evolutionary relationship of the two standards to provide guidance for equipment selection, engineering configuration and compliance.

Against the background of large-scale development of conventional and unconventional oil and gas resources, natural gas compressors, as core power equipment for gathering, transportation and pressurization, have been increasingly applied. At present, gas turbine-driven compressors generally suffer from low thermal efficiency, direct emission of high-temperature flue gas and serious waste of waste heat resources, which not only increase energy consumption costs but also cause environmental impacts. Scientific recovery and utilization of compressor waste heat can significantly improve the overall energy efficiency of units, reduce energy loss and help enterprises reduce costs and increase benefits. This paper analyzes the core principle, utilization status and practical application effects of waste heat recovery, providing a reference for energy saving and consumption reduction in natural gas production.

This article provides a systematic overview of screw compressors, a vital category of positive displacement compressors widely used in industrial gas compression, refrigeration, air conditioning, and process gas handling. It details their operating principles, traces key milestones in their historical development, and analyzes their core technical advantages and limitations. Understanding these characteristics is essential for appropriate selection and efficient application across various industries.

This article provides an overview of three widely used compressor types in industrial, energy, chemical, and refrigeration sectors: screw, centrifugal, and reciprocating piston compressors. Each type is explained in terms of its operating principle, development history, and key technical features. The comparative analysis highlights their respective strengths and limitations, including efficiency, pressure and flow ranges, maintenance requirements, and operational stability. Selection guidelines are summarized based on application needs such as gas properties, pressure, flow rate, and required modulation. Understanding these differences is essential for choosing the optimal compressor for reliable and efficient system performance.

Chinese diaphragm compressors provide essential oil-free, high-purity compression solutions for critical industries like hydrogen energy, semiconductors, and petrochemicals. Their core technology uses a hermetically sealing metal diaphragm to completely isolate process gas from hydraulic oil, ensuring 100% contamination-free operation for sensitive, hazardous, or valuable gases. Key advantages include gas purity up to 99.9999%, ultra-low leak rates, and high discharge pressures. As demand grows for clean energy and advanced manufacturing, these reliable compressors serve as a vital component for efficient and sustainable industrial infrastructure.

Hydrogen compressors do more than fuel vehicles. This article explains their critical role across the full value chain—from green H2 production and storage to industrial synthesis and energy storage—highlighting their foundational value in the H2 economy.