Air separation plant engineering project KDN-700/110Y Pure Nitrogen
Generator & Instrument Air System
KDN-700/110Y Pure Nitrogen Generator & Instrument Air System
Main design reference:
1) GB 50316-2000；
2) GB 16912-1997；
9) GB 3323-2005；
Introduction of main equipments:
1. Fee air compressor: compress the mechanical impurities removed
air to process required pressure, and then send the air to
2. Air pre-cooling unit: preliminary cooling for the air out of air
3. Molecular sieve purifier: adsorb the moisture, acetylene, carbon
dioxide and part hydrocarbon in the feed air to guarantee the
normal running of air separation plant.
4. Expander: the main cold source of the plant.
5. Fractionating: Fractionating column: rectify the feed air to
obtain needed products.
Valve Installation Construction and Acceptance
1. When install the valve, check the nominal pressure, diameter,
working medium and fluid flow direction according to the drawing or
design documents. And it must have product factory certification.
2. The shell test and sealing test for each valve must be carried
out according to the 3.0.5 regulation in GB50235 before installing
valves; The sell test pressure must not be less than 1.5 times of
the norminal pressure, and the test time should not be less than
5min, and it is qualified when there is no leakage for the shell
3. When install the valve, the installation direction for the hand
wheel should be subject to the easy operation when there is no
special specification. But the hand wheel must not be installed
4. The open and close pressure for the safety valves with the
equipments will follow the regulations of design documents from the
equipment manufacturer. The open pressure of the safety valve on
the pipe will be adjusted according to 1.05~1.1 times of maximum
working pressure, and there must be no leakage under the working
pressure after adjusting.
1. Our company is one of the state 21 great equipment domestication
2. Our company can provide the engineering design and installation
service, and technical services and after-sale equipment
3. Powerful manufacturing capacity
4. Mature project engineering supervision
5. Impeccable quality management system
6. Our company is a state-owned enterprise that can give
professional consult, design, supervision, project management,
import and export trade, forming a complete set for air separation
plant, and engineering project contracting (EPC).