ChinaPart of SEGsei.sinopec.com
Its role EPC
Sinopec Engineering Incorporation (SEI), legally known as 中国石化工程建设有限公司, is a wholly-owned subsidiary of Sinopec Engineering (Group) Co., Ltd. under China Petrochemical Corporation (Sinopec). Founded in 1953 and formally established in 1985, SEI is headquartered in Beijing, China, with a registered capital of 500 million yuan.
As China's first design entity for petroleum refining and petrochemical engineering, SEI holds national Class A qualifications in engineering design, consulting, supervision, and cost consulting. It employs over 2,100 professionals, including two academicians of the Chinese Academy of Engineering and numerous senior experts.
SEI provides comprehensive services across the project lifecycle, including engineering consultation, design, procurement, construction (EPC), and project management contracting (PMC). Its expertise spans refineries, petrochemical plants, coal chemicals, natural gas processing, environmental engineering, and infrastructure, serving clients domestically and internationally.
The company has completed over 2,000 refining and petrochemical units, including landmark projects like the Wuhan Ethylene plant, Puguang Gas Purification Plant, and overseas ventures such as Iran's Arak Refinery. SEI boasts core technologies in catalytic cracking, ethylene, hydrocracking, and energy-saving processes, holding about 500 patents and 150 proprietary technologies. It has earned 76 national science and technology progress awards, including three special prizes.
Also known as Petrochemical Engineering Construction Company, 中国石化工程建设公司, and Sinopec Engineering Construction Company.
chemXplore tracks 3 projects involving SEI, of which 3 are active.
3 more active projects are in the record. See all 3 in chemXplore →
Units move to stabilise refining volumes, raise new‑materials output and upgrade product mix while pushing structural adjustment under the 'one base, two wings, three chains, four new' pattern.
2D (900 km) and 3D (300 km2) seismic work ahead of a 7,000 m ultra‑deep well; 1.25 MMtpa PE plant >34% complete; Aktobe output target 800 Kt by 2028; CCUS working group proposed.
A 101.8 m, 1,500 t fractional column for ethylene separation arrived on site, built at AtyrauNefteMash and moved on an SPMT to the National Industrial Petrochemical Technology Park.
€70M project to build two large, high‑purity nitrogen units at NIPT SEZ to support Silleno’s world‑scale polyethylene plant; commissioning targeted end‑2028.
Qingdao LNG terminal's cold-energy cascade project advances to detailed design/construction, using low-temperature Rankine and efficient heat exchange to produce up to 26M kWh/yr and cut grid use/CO2.
New aromatics tech validated: p-xylene adsorbent, ethylbenzene‑conversion isomerization catalyst, SMB single‑tower separation, intelligent control; 25 patents; +50% low‑temp heat reuse, −27% energy/unit
About 700 attendees and 500+ local firms gathered to connect Kazakh suppliers to the Silleno Petrochemical project and launch a four‑year training plan for 60 engineers.
The plant will produce 1.25M tons of polyethylene annually by 2029, creating 8,000 construction jobs and 800 operational jobs, boosting Kazakhstan's economy and reducing import reliance.
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