Kaifeng · Henan · Air-separation and engineered compression
Buy a compressor, a package or an integrated plant—with a defined boundary
Kaifeng Air Separation Group (开封空分集团有限公司) traces its enterprise history to 1958 and production to 1965. Its portfolio connects air separation, gas liquefaction, heat exchangers, pressure equipment and automation with centrifugal and reciprocating compression.
- One machine
- Selected gas duty, driver and mechanical/performance acceptance.
- Compressor package
- Machine plus agreed cooling, lubrication, instruments and control/auxiliary scope.
- Air-separation project
- Compressor and process air/gas balance, purification/separation interfaces, interlocks and commissioning responsibilities.
DA single-shaft · one model, different selections
The project code keeps DA200-61's operating conditions attached
The official engineering table records model/code, gas, pressure, flow, speed and shaft power. These are published reference selections; obtain a current duty sheet and map for the actual order.
DA200-61 · 6060
| Flow | 210 m³/min |
|---|---|
| Inlet → outlet | 0.097 → 0.70 MPa absolute |
| Shaft speed | 11,543 rpm |
| Shaft power | 1040 kW |
DA200-61 · 6060L
| Flow | 230 m³/min |
|---|---|
| Inlet → outlet | 0.082 → 0.63 MPa absolute |
| Shaft speed | 11,543 rpm |
| Shaft power | 1110 kW |
H twin-shaft · two gas duties
Air and nitrogen remain separate selections
Air · H125-7/0.98
Code 6083
125 m³/min
0.098 → 0.70 MPa absolute
625 kW shaft power
Nitrogen · H130-9/1.04
Code 6130
130 m³/min
0.104 → 0.90 MPa absolute
725 kW shaft power
Both references list 20,174 / 24,656 rpm for the twin-shaft arrangement. These are compressor-shaft speeds, not two alternative motor supply frequencies.
Supply gas analysis, suction temperature/range and required capacity conditions. The air and nitrogen references do not qualify an oxygen duty; KFAS's separate oxygen reciprocating route requires its own materials, cleaning and operating-safety review.
H gas-duty and package-selection requirements →Manufacturer-reported project · August 2026
A nitrogen plant's performance is an integration result
Wudi Xinyue · nitrogen EPC project
KFAS reported commissioning of a 15,000 Nm³/h nitrogen unit, with nitrogen oxygen content within 0.5 ppm and by-product oxygen purity 99.6%.
The report describes nitrogen output adjustment over 50–110% of design output within the air-compressor flow range. This is a reported plant case, not a universal compressor turndown or purity guarantee.
What to agree for your installation
Relate compressor capacity and anti-surge behaviour to the process air balance, purification, downstream pressure and startup sequence. Agree permitted load changes, sampling points and process acceptance conditions.
The controls portfolio discusses DCS/PLC and integrated turbine/compressor controls. Define package-to-plant signals, permissives, trip ownership and commissioning responsibilities for the selected system.
Manufacturing evidence → order-specific acceptance
Connect the workshop and test capability to the selected machine
Selected performance
Obtain the compressor map, reference gas/temperature/pressure, normal and limiting duties, test standard, tolerances and driver/package input.
Mechanical condition and controls
KFAS describes test stands, vibration/axial-displacement monitoring and anti-surge systems. Agree the actual offered instruments, alarm/trip limits, test records and serial-number traceability.
Site interfaces
Specify cooling-water conditions, lubrication/auxiliaries, electrical starting, foundation loads and lifting/maintenance access. Itemise supply and installation boundaries.
The national standards record names KFAS among the drafting organisations for JB/T 8694-2014, concerning reciprocating oxygen-compressor mesh valves. This establishes participation in that specific standard's drafting; it is not certification of the DA/H package being ordered.
Send a process duty sheet that preserves the engineering basis
- Gas and capacity
- Air or nitrogen analysis; inlet temperature and absolute pressure/range; flow reference conditions; minimum, normal and peak duty; required outlet pressure. Attach an existing model/project code where relevant.
- Package and plant boundary
- Machine versus packaged versus plant scope; driver/starting; cooling utilities; air/gas balance; anti-surge and DCS/ITCC signals; trip/permissive ownership.
- Acceptance and operation
- Current selected map, test/witness plan, destination equipment documents, drawings, lifting access, commissioning responsibilities and maintenance/spare parts.
Questions before ordering KFAS compression equipment
Why does DA200-61 have different flow and power figures?
The project codes describe different selections. Code 6060 uses 210 m³/min at 0.097→0.70 MPa absolute; 6060L uses 230 m³/min at 0.082→0.63 MPa absolute. Obtain a current selection at your actual inlet state.
Do the two H shaft speeds describe two motor options?
They describe the twin-shaft compressor arrangement. Driver speed, motor rating and electrical starting need their own selected package documents.
Does the nitrogen project's 50–110% range apply to every H compressor?
It describes a particular integrated nitrogen plant in the manufacturer's report. Agree the selected compressor map, anti-surge limits and complete process operating range.
Can the air or nitrogen reference be used for oxygen?
Use a separately qualified oxygen duty with suitable materials, cleanliness and operating controls. The DA/H air and nitrogen examples do not establish oxygen suitability.