Hengli starts up new PSA units at Dalian integrated complex

Hengli Petrochemical (Dalian) Co. Ltd. (HPDC) has commissioned seven new pressure swing adsorption (PSA) units from Honeywell UOP LLC to supply high-purity hydrogen at its 20-million tonnes/year (tpy) crude-to-paraxylene integrated refining and petrochemical complex in Hengli Petrochemical Industrial Park (HPIP) at Changxing Island Harbor Industrial Zone in Dalian, Liaoning Province, China (OGJ Online, July 11, 2019).

HPDC will use the new Honeywell UOP Polybed PSA units to produce about 1.4 million cu m/hr high-purity hydrogen in its downstream hydrotreating operations to help produce diesel, gasoline, and jet fuel, as well as to create feedstock for petrochemical products, the service provider said on Sept. 21.

Alongside technology licensing, Honeywell UOP also provided services, equipment, catalysts, and adsorbents for the skid-mounted PSA units, which use proprietary UOP adsorbents to remove impurities at high pressure from hydrogen-containing process streams, allowing hydrogen to be recovered and upgraded to more than 99.9% purity to meet refining needs.

Startup of the new PSA units follows HPDC’s commissioning of a new 300,000-tpy STRATCO alkylation unit—based on technology from E.I. DuPont de Nemours & Co. subsidiary DuPont Clean Technologies—at the Dalian complex in July (OGJ Online, July 24, 2020).

HPDC previously engaged Honeywell UOP to provide its proprietary Callidus advanced flares and low-nitrogen oxides (NO_x) burner technology to help reduce NO_x emissions at the Dalian integrated complex (OGJ Online, July 18, 2018).