Location: Shandong, Inner Mongolia and Ningxia, China

Start-up time: 2014

Background:

According to the material sources, producing butadiene product includes process of oxidative dehydrogenation of 1-butene and butadiene extraction from C4. For process of oxidative dehydrogenation of 1-butane, especially, it was hard to design and optimize for containing many units, including acetonitrile unit, oxidative dehydrogenation unit, Etherification unit and butadiene extraction unit.

Solution:

ZEHUA had successfully designed 5 projects of producing butadiene product which adopted process of oxidative dehydrogenation of 1-butene or butadiene extraction from C4, including almost 100 towers, based on owned technical advantages.

(1) Process optimization, heat integration, etc;

(2) Optimizing column ID and number of trays;

(3) Heat exchaners design based on optimum operation condition;

(4) Design and Fabrication of column internals adopting ADV® combinatorial valve tray .

Result:

These projects were successful in commissioning test run. Devices were easily and stably operated. Technical parameters and product properties could meet or be superior to requirements. It showed that ADV® combinatorial valve trays had high mass-transfer efficiency and also could adapt fouling and coking system, meanwhile that ZEHUA had already owned the core technology in butadiene extraction process.