Air Liquide – DOW Chemical Company - thumbnail 1Air Liquide – DOW Chemical Company - thumbnail 2Air Liquide – DOW Chemical Company - thumbnail 3Air Liquide – DOW Chemical Company - thumbnail 4Air Liquide – DOW Chemical Company - thumbnail 5Air Liquide – DOW Chemical Company - thumbnail 6

Air Liquide – DOW Chemical Company

INDUSTRIAL STRUCTURES
Construction of a 1500 tons per day cryogenic Air Separation Unit (ASU) used to produce oxygen required in DOW Chemicals operations.

Piling and foundations for cold boxes, pipe ducts, turbines and pumps. Dynamic analysis of two large air compressor foundations for vibration control.

Two shop fabricated packaged ASU cold box enclosures, measuring respectively 22'x20'x200' high and 17'x15'x200' high. Each cold box was built horizontally in two sections with all internal vessels and piping. All four sections were shipped by barge to the site.

Lifting and handling engineering was performed for all stages of construction. The two lower sections of each cold box were lifted into the vertical position and tied together with sway frames. The two upper sections of each cold box were lifted into the vertical position and a custom jacking frame was used to raise the vessels and piping inside the enclosure. The upper sections were then lifted and stacked over the lower sections and tied together with sway frames. The vessels and piping were finally lowered inside the enclosure and all piping connections made. Each of the four cold box sections handled weighed approximately 200 tons.

Client:
Air Liquide Process and Construction

Owner:
DOW Chemical Company

Location:
Freeport, Texas, United States

Construction Cost:
$ 40 million
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