PROJECT CASE STUDY

Baotou, Inner Mongolia — 2,000 Nm³/h oxygen plant

A 2,000 Nm³/h cryogenic oxygen plant built for a metallurgical customer in Baotou, Inner Mongolia. The scope covered the cold box, molecular sieve purification unit, turbo expander, product compressor and DCS control system, with erection supervision and commissioning support. The plant was handed over after on-site performance testing against the contractual oxygen flow, purity and pressure.

2,000 Nm³/h

Oxygen capacity

Baotou, Inner Mongolia

Cold inland site

DCS

Central control room

Performance tested

Before handover

PROJECT DATA

Project data

Project name

2,000 Nm³/h cryogenic oxygen plant, Baotou

Location

Baotou, Inner Mongolia, China

Industry

Metallurgy

Plant type

Cryogenic air separation unit, oxygen product

Capacity

2,000 Nm³/h oxygen

Major equipment

Cold box, molecular sieve purification unit, turbo expander, product compressor, cryogenic pumps and vaporiser as scoped

Control system

DCS with operator and engineer stations, historical data server and safety interlock layer

Scope of supply

Process design, detailed engineering, manufacture, factory inspection, shipment, erection supervision, commissioning, performance testing, operator training

Acceptance

On-site performance test: oxygen flow, purity and discharge pressure verified before handover

Full performance test data, guarantee values and customer details are covered by the project contract and are available to qualified customers on request.

ENGINEERING

What made this project demanding

Cold inland climate

Design ambient temperatures well below freezing affect pre-cooling, insulation thickness, instrument selection and the start-up sequence.

Continuous duty for metallurgy

Oxygen demand in a metal plant is continuous and unforgiving: an unplanned stop interrupts production, so reliability of the compressor train, expander and control system is the priority.

Purity and pressure at the battery limit

Oxygen is used for burner and lance duty, which fixes both the purity and the discharge pressure that must be held across the load range.

DELIVERY

How we delivered it

Process and detailed engineering

Process design and detailed engineering were carried out in house, including the cold box arrangement, purification unit and compressor train selection.

Manufacture and factory inspection

Cold box, molecular sieve purifier and pressure vessels were fabricated and inspected in our own workshop, including radiographic testing of critical welds.

Shipment and erection supervision

The cold box was shipped as a modular unit and erected under our supervision to reduce site welding and construction time.

Commissioning and performance test

Start-up, cool-down and performance testing were completed on site, with oxygen flow, purity and pressure verified against the contractual figures.

Operator training and documentation

Operating and maintenance manuals, as-built drawings and inspection records were handed over with operator training.

YOUR PROJECT

Talk to us about a plant like this.

Flow, purity, pressure and site conditions are enough for a preliminary configuration and budgetary figure.