Abstract: The SINOALKY sulfuric acid alkylation technology was adopted in a 200 kt/a alkylation unit of SINOPEC Luoyang Company. Compared with the traditional sulfuric acid alkylation technology, the SINOALKY technology adopts high-efficiency acid-hydrocarbon coalescence and separation technology in the refining technology of the reaction effluent, and eliminates the process of alkaline washing and water washing, which is very different from the traditional technology. The principle, characteristics and advantages of the purification technology of SINOALKY alkylation reaction effluent are introduced, and its industrial application is studied. In 2020, the alkylation unit of SINOPEC Luoyang Company used SINOALKY reaction effluent purification technology. The results show that the sulfur content of the reaction product can be controlled below 10 μg/g before fractionation, and the quality of alkylate products are all qualified. Compared with traditional alkaline washing and water washing purification technology, the SINOALKY refining technology reduces the energy consumption by 181.71 MJ/t and the production cost by 2 444 100 CNY/a, and has achieved good industrial application effect.

Key words: alkylate, acid/hydrocarbon separation, coalescer, alkali washing