New Breakthrough: Shengu CGC Ultra-High Pressure Compressor (Secondary Unit) Prototype Completed
English Official Translation (Industrial News Standard Version)
Recently, the prototype of the CGC series ultra-high pressure compressor (secondary machine), independently developed by the Reciprocating Compressor Division of Shengu Group, has successfully passed the appraisal organized by China General Machinery Industry Association. The appraisal committee concluded that the key performance indicators of the CGC series test prototype are equivalent to those of international counterparts. The prototype meets the conditions for industrial mass production and is ready for industrial application.
This marks a crucial landmark breakthrough in China’s reciprocating compressor sector, representing a solid stride forward in breaking the monopoly held by international manufacturers in the ultra-high pressure compressor field. It delivers a powerful blow to the long-standing overseas monopoly over ultra-high pressure compressors and lays a solid core technology foundation to tackle the bottleneck "stuck-neck" challenges facing high-end chemical equipment.
The "Crown Jewel" of the Industry Long Monopolized by Foreign Giants
As the core critical equipment for LDPE/EVA polyethylene production plants, ultra-high pressure compressors are well-deservedly hailed as the "crown jewel" of reciprocating compressors, and they were the last and most formidable barrier to domestic localization in the past.
In production processes, this equipment undertakes the core task of secondary pressurization of high-pressure gas. It compresses media at 30 MPa up to 300 MPa to meet polymerization reaction requirements. The equipment operates under extremely harsh working conditions: ultra-high operating pressure and massive integrated rod loads impose near-extreme technical requirements on structural design, advanced new materials, precision machining and assembly, as well as complete set engineering support.
For decades, only two overseas enterprises worldwide have mastered mature manufacturing technology for such large-scale compressor units. Complete reliance on imported core equipment has severely restricted the independent controllability and long-term stable development of China’s high-end polyethylene industrial chain.
Shouldering the mission of breaking through the bottleneck for domestic high-end equipment, Shengu Group has collaborated with domestic research institutes, universities and engineering design institutions for over a decade of intensive research. It has independently developed two major ultra-high pressure compressor product lines, the CGB and CGC series, and completed the manufacturing and test verification of the CGC series prototype.
International Benchmark Parameters & Modular Design Adaptable to Industrial Capacity Requirements
The core pressure-bearing components of the CGC series ultra-high pressure compressor are designed for a pressure rating of 350 MPa. The unit features a maximum allowable rod load of 3000 kN, a maximum stroke of 450 mm, and a rated rotational speed of 200 r/min. A single unit can be fitted with up to 12 cylinders, with a maximum power output of 34,000 kW. Its overall technical parameters match the performance standards of international equivalent products.
Developed with a modular design, the unit can accurately cater to the ultra-high pressure compressor demands of LDPE/EVA plants with an annual output of 60,000 to 350,000 tons by flexibly adjusting parameters including cylinder quantity, plunger diameter and crankshaft stroke.
The prototype has completed a series of high-standard tests, including the 350 MPa static pressure resistance test, overall mechanical running test and specified load test. These tests have effectively verified the reliability and matching performance of the unit’s mechanical design, manufacturing & assembly and auxiliary systems, providing solid data support for industrial implementation.
Shared Test Platform to Drive Comprehensive Industrial Advancement
Leveraging the development of the CGC prototype, Shengu has deployed special processing equipment, testing instruments and test facilities, and built a dedicated load test platform for ultra-high pressure compressors. The platform not only supports the R&D of this unit but also serves as a vital verification carrier for supporting technologies of domestic ultra-high pressure equipment.
The platform provides a test environment for the localization of a full range of supporting components and core software technologies, including ultra-high pressure temperature measuring elements, high-pressure control valves, intelligent unit monitoring systems and ultra-high pressure gas pulsation analysis tools. On one hand, it addresses weak links in the supply chain of ultra-high pressure equipment supporting parts; on the other hand, it develops a full set of local technical solutions for the operation, maintenance and overhaul of imported units currently in service nationwide, comprehensively upgrading the overall technical level of China’s ultra-high pressure compressor industry.
Persistent Technical Breakthroughs to Consolidate Self-Reliance in Domestic Chemical Equipment
The successful appraisal of the CGC series ultra-high pressure compressor prototype is another landmark achievement of Shengu Group’s commitment to independent innovation and tackling high-end equipment challenges. The full-chain localization of technologies, ranging from core materials and overall unit structure to complete control systems, will drastically cut the procurement and operation & maintenance costs of equipment for China’s polyethylene industry. It also eliminates risks associated with reliance on imported key equipment, injecting robust domestic momentum into the safe, high-quality development of China’s polyolefin chemical industrial chain.
Moving forward, Shengu Group will uphold its corporate mission of "Building Intelligent Core Technologies, Supplying Equipment to the World" and adhere to its core values of "Customer-centricity, Dedication to Quality, Continuous Innovation and Pursuit of Excellence". The group will facilitate the high-quality development of the global energy and chemical industry and contribute Shengu’s strength to transforming "Made in China" into "Created in China".
