China Daqing Petrochemical 50000 t/a 1-hexene/1-octene co-production unit successfully started.

By SKYSEVEN Chemical Technical Team · 2026-07-30

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On July 27, 2026, the 50000-ton/year 1-hexene/1-octene co-production plant of China Daqing Petrochemical, jointly constructed by China Daqing Petrochemical Engineering Co., Ltd. and China Daqing Petrochemical Construction Co., Ltd., was successfully started at one time and successfully produced qualified 1-hexene and 1-octene products.

Core Overview of 1. Project Commissioning

on July 27, 2026, it was constructed by a consortium of China Daqing Petrochemical Engineering Co., Ltd. and China Daqing Petrochemical Construction Co., Ltd. China Daqing Petrochemical 50000 t/a 1-hexene/1-octene co-production plant one-time drive success, the smooth production of qualified 1-hexene, 1-octene products. The device is PetroChina's first set of the same type of co-production device, equipped with multi-party joint research and development. China completely independent intellectual property rights process it marks the formal realization of industrialized independent production of high-end linear alpha-olefins in China, completely breaking the monopoly of overseas technology and supply, greatly improving the stability of the supply chain of polyolefin industry chain in China and the Asia-Pacific region, and forming an important impact on the global high-end comonomer trade pattern.
Project Elements
details
unit scale
50000 tons/year flexible co-production of 1-hexene and 1-octene
construction subject
daqing Petrochemical Engineering, Daqing Petrochemical Construction Consortium (Daqing, China)
technical sources
china's independent intellectual property rights, multi joint development
industry positioning
first 1-Hexene/1-Octene Co-production Industrial Plant of PetroChina
key node
2025.07.11 Commencement | 2026.06.16 Zhongjiao | 2026.07.27 Output Qualified Products

key progress of 2. construction and start-up

the China Daqing project construction rhythm efficient, process maturity outstanding. The project will start construction in July 2025 and complete the overall delivery of the plant in June 2026. On July 25, the catalyst was put into operation to start the reaction process, and it took only 43 hours to successfully produce high-purity products up to the standard. The extremely short start-up cycle fully verifies that this set of China's self-developed ethylene oligomerization process system is stable, controllable, with large-scale, replicable mass production capacity.

3. core process and technical advantages

the device adopts independent research and development in China ethylene oligomerization process: Ethylene pressure-rising mixed special solvent enters the core reactor, and oligomerization reaction occurs under the high-efficiency catalytic system to generate mixed olefin materials, and then high-purity 1-hexene and 1-octene are separated by precision distillation, and mixed C6 olefins, C10-C20 long-chain olefins and low-molecular wax are produced as by-products.
Compared with overseas traditional processes, the core advantages of this technology are significant: high catalyst activity, excellent product selectivity, according to the global market. Dynamic adjustment of 1-hexene and 1-octene output ratio flexible adaptation to different downstream needs, effectively improve the device's anti-cycle capacity and comprehensive economic benefits.

4. Global Trade and Supply Chain Core Impacts

1. Accelerate the import substitution of high-end comonomers and reshape the Asia-Pacific supply pattern.
1-hexene, 1-octene is the core co-monomer of POE, high-end LLDPE, HDPE production, for a long time the Chinese market is highly dependent on imports, 1-octene local supply gap is huge, the supply is mainly monopolized by overseas chemical giants. After the new plant is put into operation in Daqing, China, it will directly fill the gap in China's local production capacity, greatly reduce the dependence of the Asia-Pacific region on overseas high-end alpha olefins imports, and provide global buyers with a new stable supply channel for China's domestic production.
2. Diversified by-products release new trade categories
after full production operation, the plant can stably produce mixed C6 olefins, long-chain olefins, low-molecular wax and other by-products, which can be widely used in the field of plasticizers, surfactants, high-end lubricating oil base materials, enrich the northeast China refining export category, for overseas traders to add a small number of high-end chemical procurement targets.
3. Overseas trade practical reference suggestions
it is suggested that overseas traders should focus on tracking the load climbing progress and official export window of Daqing plant in China. Domestic high-purity 1-hexene, 1-octene release, will directly impact the original import long association price and spot premium system. It can connect China's Daqing Petrochemical export channels in advance, compare the cost, delivery cycle and quality advantages of domestic and overseas imported sources, and optimize the procurement layout in the Asia-Pacific region. At the same time, the autonomous process can be replicated and expanded, indicating that China's high-end alpha-olefin production capacity will continue to expand, long-term changes in global trade flows.

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