Honeywell UOP will provide hydrogen technology to China’s largest crude-to complex project in Zhoushan, Zhejiang Province.

Zhejiang Petrochemical will use four Honeywell UOP Polybed™ pressure swing adsorption (PSA) units to supply high-purity hydrogen for the second phase on its integrated refining and petrochemical complex.

“More petrochemical manufacturers and refiners in China are choosing UOP’s PSA technology because it is extremely competitive and reliable source of high purity hydrogen,” said Bryan Glover, Vice-President and General Manager of Petrochemicals & Refining Technologies at Honeywell UOP.

“High-purity hydrogen is a critical element in the efficient operation of these complexes because all of the conversion technologies in them depend on it.”

UOP announced the first phase of the project in 2017, which included technologies for hydro processing and heavy oil upgrading, and production of aromatics for plastic resins, films and fibres.

Zhejiang Petrochemical then awarded the second phase in January 2019, doubling the plant’s aromatics capacity to approximately 12 million metric tonnes per year.

Polybed PSA systems are skid-mounted, modular units complete with hardware, adsorbents, control systems and embedding process technology, enabling quick and efficient installation to reduce cost and downtime. 

The PSA process uses 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.

In addition to recovering and purifying hydrogen from steam reformers and refinery off-gases, the Polybed PSA system can be used to produce hydrogen from other sources such as ethylene off-gas, methanol off-gas and partial-oxidation synthesis gas.