Performance Overview of STRATCO® Alkylation Technology
The STRATCO® alkylation technology is the predominant global sulfuric acid alkylation technology. The STRATCO® alkylation technology holds 75% of the global sulfuric acid alkylation market due to its numerous technological and operational advantages over competing technologies.
There are approximately 80 STRATCO® effluent refrigerated alkylation units in commercial operation at refineries worldwide. Elessent Clean Technologies maintains an active relationship with these refineries. This broad experience has enabled Elessent to refine its process design, instrumentation, and operating procedures to provide market leading reliability and flexibility. Because of this, Elessent has been awarded over 100 licenses for STRATCO® effluent refrigerated alkylation units, of which over 50 are repeat licensees for customers that have the STRATCO® technology at more than one location.
Notable Licensing Achievements
Elessent Clean Technologies provides market leading reliability as STRATCO® alkylation units continue to operate worldwide more than 60 years after initial startup. This reputation as a robust reliable technology has led to over 50 repeat licenses as customers repeatedly choose the STRATCO® alkylation technology. Sinopec recently licensed its seventh STRATCO® alkylation unit in China, helping it to meet the country’s clean fuel demands as it moves to more stringent regulations.
Elessent has recently completed the successful start-up of the following STRATCO® alkylation units:
| Refinery | Year of Start-Up | Location | Olefin Feed Type | Performance Test Met |
|---|---|---|---|---|
| Sinopec Fujian | 2021 | China | FCC Butylene | x |
| Sinopec Zhenhai | 2019 | China | MTBE Raffinate | x |
| Sinopec Yangzi | 2019 | China | FCC Butylene | x |
| USGC Refinery | 2019 | USA | 100% Amylenes | x |
| Hengli Petrochemical (Dalian) | 2019 | China | 100% Isobutylene | x |
| Sinopec Qilu | 2019 | China | MTBE Raffinate | x |
| Delek Krotz Springs | 2019 | USA | FCC Butylenes | x |
| Sinopec Tianjin | 2018 | China | MTBE Raffinate | x |
| CNPC JINXI | 2016 | China | MTBE Raffinate | x |
| TURKMENBASHI Oil Processing Complex | 2016 | Turkmenistan | FCC Butylene | x |
| Takreer | 2015 | Abu Dhabi, UAE | FCC Butylene | x |
| Satorp | 2013 | Saudi Arabia | FCC Propylene & Butylene | x |
| Bashneft Ufa | 2013 | Russia | FCC Butylene | x |
| Petrotrin | 2013 | Trinidad | FCC Butylene | x |
| Chinese Petroleum Corporation (CPC) | 2013 | Taiwan | FCC Butylene | x |
| ENAP | 2012 | Chile | FCC Butylene | x |
| Hyundai Oilbank | 2011 | South Korea | FCC Butylene | x |
Isobutylene Alkylation
In addition, Elessent started up the first ever commerical 100% isobutylene unit in 2019 at Hengli Petrochemical Company in Dalian, China. Read more about STRATCO® alkylation" technology butane-to-alkylate applications.
100% Amylene Alkylation
Elessent Clean Technologies was awarded the first ever and only license for the alkylation of a 100% amylene feedstock. Many operating STRATCO® alkylation units process some percentage of amylene olefins from the FCC, but this unit started up in the US Gulf Coast in 2019, and it is the first alkylation unit to process only amylenes. The unit is optimized to utilize spent sulfuric acid from an adjacent alkylation unit processing butylene olefins, helping to improve the overall economics of the project by maintaining current sulfuric acid infrastructure.
