Trusted Provider of Ethylene Technology and Engineering Services
Wison Engineering is a leading provider of ethylene technology and engineering services in China. With over 25 years of experience in the research, development, and engineering practice of steam cracking technologies (including cracking furnaces and olefin separation), we have established a mature system covering technology licensing, process package development, engineering design, procurement, construction, as well as digital and modular delivery, backed by extensive project execution experience.
We offer a complete ethylene technology with proprietary intellectual property, including steam cracking furnace technology and advanced olefin separation technology, which have been applied in over 1000 KTA capacity-level ethylene plants, achieving commercial deployment. In engineering services, we pioneered full-process digital delivery for over 1,000 KTA capacity-level ethylene plants in China and were early adopters of modular delivery. We completed the world's first integrated modular delivery of a 200 KTA cracking furnace. Leveraging a robust quality and safety management system, our deliverables have received global recognition, including the "Golden Key Award" from SABIC. To date, we have provided over 240 new-build and revamp services for cracking furnaces worldwide, more than 120 of which utilized our proprietary core technologies, earning widespread industrial acknowledgment.
Ethylene Decarbonization Technology
Electrically Heated Cracking Furnace
Wison Engineering's electrically heated cracking furnace solution uses silicon-molybdenum rods as heating elements in the radiant section, providing heat directly from green electricity without burners, avoiding flue gas and CO emissions. A closed-loop heat transfer system conveys the radiant heat to the convection section, achieving a high overall furnace efficiency of over 98%. This technology is suitable for both new builds and revamps of conventional furnaces, enabling low-carbon transformation without impacting steam balance. In scenarios with electrified downstream equipment such as compressors, the furnace can be simplified to a single radiant box, with high-temperature cracking gas efficiently preheating feedstock and dilution steam, minimizing power consumption.
Electrification of Rotating Equipment
Electrifying key rotating equipment in chemical plants is a practical path to decarbonization. Wison Engineering has applied electric drives to cracking gas compressors, syngas compressors, reaction gas discharge compressors, and low-temperature propylene refrigerant compressors, replacing conventional steam turbines. The electric drive system offers fast response, stable operation, and high control accuracy, reducing boiler and steam system requirements, thereby lowering energy and water consumption. Design fully accounts for grid integration and load characteristics, with scalability for renewable energy, supporting overall energy efficiency and carbon emission control.
Recovery of Low Temperature Waste Heat
Wison Engineering's cracking furnace technology has made significant advancements in energy saving and efficiency. Cracking furnaces built or revamped using Wison's technology can achieve maximum recovery of flue gas waste heat, with exhaust gas temperatures reduced to below 90°C (compared to the conventional >120°C), and overall thermal efficiency exceeding 95%. Additionally, Wison has independently developed the FIT furnace tubes with enhanced heat transfer internals, achieving over 20% higher heat transfer efficiency compared to standard tubes.
Hollow Intersecting Plate Enhanced Heat Transfer Tubes
This patented technology embeds hollow intersecting plate inserts in the radiant tubes of cracking furnace, improving heat transfer, reducing tube wall temperature by approximately 20°C, delaying coke formation, and increasing ethylene yield and run-length. The principle involves increasing fluid turbulence and heat transfer area to enhance conduction efficiency. Developed in collaboration with leading universities and research institutes, this technology is exclusively owned by Wison Engineering and has been implemented industrially.
Fully Modularized Ethylene Cracking Furnace
Cracking Furnace Technology
The cracking furnace is the core unit of an ethylene plant. Its capacity and technology directly determine production scale, product quality, and operational efficiency. Therefore, the ethylene cracking furnace plays a leading role in the production of the ethylene unit and even the entire integrated petrochemical complex.
Since 2000, Wison Engineering has developed the HS-I, HS-II, and HS-III ethylene cracking furnaces, offering more stable operation, advanced performance, and extended furnace tube life.
Olefin Separation Technology
Wison Engineering began developing olefin separation technology in 2002, initially applied to the olefin separation section of MTO units. Based on years of engineering practice in ethylene and MTO plants, Wison has gradually developed proprietary olefin separation technology suitable for a wide range of hydrocarbon feedstocks, featuring low energy consumption and low capital investment. This technology has obtained multiple patents and proprietary technology authorizations.
The quench oil system is a critical unit in ethylene plants. Mastery of steam cracking technology enables detailed analysis of product distribution, particularly for C6+ components, which form the foundation for process calculations of the ethylene quench system. Based on simulations of production data from multiple ethylene plants, Wison has identified key design principles for the ethylene quench system and developed the proprietary "Viscosity-Reduction Quench Oil Process Technology."
The process flow and core technical elements of Wison's ethylene separation technology are very similar to those of its MTO olefin separation technology. Both utilize core "pre-cut" technology, cracking gas compression, ethylene distillation, propylene distillation, C2 hydrogenation, and propylene refrigeration units. The process flows are fundamentally identical, making Wison's olefin separation technology a mature and reliable industrially proven solution.
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